11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Luminescence and scintillation properties of Mg2+-
codoped (LuxGd3-x)Al2.4Ga2.6O12:Ce (x = 0.2 - 0.8)
single crystals
W.R. Chewpraditkul1,a, N. Pattanaboonmee1, O. Sakthong1, W. Chewpraditkul1,
A. Yamaji2, A. Yoshikawa2,3, K. Kamada3, S. Kurosawa3, W. Drozdowski4 , M. E.
Witkowski4, M. Makowski4, M. Nikl5
1King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand.
2Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan.
3New Industry Creation Hatchery Center, Tohoku University,
Sendai, Miyagi 980-8579, Japan.
4Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus
University in Torun, 87-100 Torun, Poland.
5Institute of Physics, AS CR, Cukrovarnicka 10, 16253 Prague, Czech Republic.
a<[email protected]>
ABSTRACT
The luminescence and scintillation properties of LuxGd3-xAl2.4Ga2.6O12:Ce (x = 0.2,
0.4, 0.6 and 0.8) garnet crystals were investigated. These crystals were grown by the
micro-pulling down method. The Ce3+ 5d1-4f luminescence was blue-shifted with
increasing Lu content due to a decrease in crystal field splitting of the 5d levels. With
increasing Lu content in LuxGd3-xAl2.4Ga2.6O12 compounds, the scintillation decay
time accelerated with an expense of LY value. Radioluminescence (RL) spectra were
measured at various temperatures between 10 and 350 K. The RL yield at room
temperature is almost 30 - 35 % lower than the value below 150 K. Low temperature
thermoluminescence was also recorded to characterize the luminescence quenching
at lower-temperature region.
Keywords: (Lu,Gd)3(Al,Ga)5O12:CeMg, Light yield, Luminescence,
Scintillation decays
76
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Fast scintillation response (Lu,Y)3Al2Ga3O12:Pr,Mg
multicomponent garnet crystals
Krittiya Sreebunpeng1, a, Warut Chewpraditkul2,b, Weerapong Chewpraditkul2,c,
Martin Nikl3,d, Akira Yoshikawa4,5,6,e, Winicjus Drozdowski7,f
1 Faculty of science, Chandrakasem Rajabhat University, Bangkok, 10900, Thailand
2 Department of Physics, King Mongkut’s University of Technology Thonburi,
Bangkok, 10140, Thailand
3Institute of Physics AS CR 10 Cukrovarnicka, Prague 6, 16200, Czech Republic
4Institute for Materials Research, Tohoku University 2-1-1, Katahira, Sendai,
Miyagi, 980-8577, Japan
5New Industry Creation Hatchery Center (NICHe), Tohoku University 6-6-10, Aramaki,
Aoba, Sendai, Miyagi, 980-8579, Japan
6C&A Corporation 6-6-40, Aramaki, Aoba, Sendai, Miyagi, 980-8579, Japan
7Institute of Physics, Faculty of Physics, Astronomy and Informatics , Nicolaus Copernicus
University, Grudziadzka 5, 87-100 Torun, Poland
a<[email protected]>, b< [email protected] >,
c< [email protected]>, d< [email protected]>, d<[email protected]>,
f<[email protected]>
ABSTRACT
Mg2+ - codoped Lu3-xYxAl2Ga3O12:Pr (x = 0, 1, 2, and 3) garnet crystals were grown
by micro-pulling down method. Absorption spectra, light yield, and scintillation
decays were measured at room temperature (RT). Temperature dependence of X-
rays excited radioluminescence (RL) spectra were recorded at different temperatures
between 10 and 350 K. The Pr3+ 5d1 → 4f luminescence was red-shifted with
increasing Y content due to an increase in crystal field splitting of the 5d levels. All
samples showed RL yield at RT around 40 - 60 % lower than its maximum one at
low temperatures. LuY2Al2Ga3O12:Pr,Mg showed light yield value of 10,130
photons/MeV and fast scintillation decay time of 17.5 ns (92%).
Keywords: Pr3+, LuY2Al2Ga3O12:Pr, Garnet crystal, Light yield, Scintillation decays
77
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Comparative study of (Y,Gd)3(Ga,Al)5O12: Mo (x=2.6, 3) and
Gd3Al2Ga3O12:Ce Scintillation Crystals for Gamma rays detection
Ongsa Sakthong1,a, Warut Chewpraditkul1, Weerapong Chewpraditkul1, Kyoung
Jin Kim2, Masao Yoshino2, Takahito Horiai2, Shunsuke Kurosawa2, Akira
Yoshikawa2, Kei Kamada3, Winicjusz Drozdowski4 , Marcin E. Witkowski4,
Romana Kucerkova5, Martin Nikl5
1Department of Physics, King Mongkut's University of Technology Thonburi,
Bangkok 10140, Thailand
2 Institute for Materials Research, Tohoku University, Sendai,
Miyagi 980-8577, Japan
3 New Industry Creation Hatchery Center, Tohoku University, Sendai,
Miyagi 980-8579, Japan
4 Faculty of Physics, Institute of Physics, Astronomy and Informatics, Nicolaus
Copernicus University in Torun, 87-100 Torun, Poland
5 Institute of Physics, AS CR, 16253 Prague, Czech Republic
a<[email protected]>
ABSTRACT
The Mo co-doped Y0.8Gd2.2(Al5-xGax)O12:Ce (x = 2.6 and 3) multicomponent garnet
crystals grown by the micro-pulling down method were compared for 662-keV γ -
rays with Gd3Al2Ga3O12:Ce single crystal. Light yield (LY) at room temperature of
57,900 photon/MeV obtain for Y0.8Gd2.2Al2.4Ga2.6O12:Ce,Mo and 57,300
photon/MeV obtain for Y0.8Gd2.2Al2Ga3O12:Ce,Mo are extremely higher than that
48,600 photon/ MeV obtained for Gd3Al2Ga3O12:Ce. While, the energy resolution of
both Y0.8Gd2.2(Al5-xGax)O12:Ce (5.88% and 6.15%) are slightly better than 6.8% of
Gd3Al2Ga3O12:Ce. A fast component decay time with intensity of 79 ns (58%), 49 ns
(52%) and 89 ns (73%) were measured in the scintillation decay time of
Y0.8Gd2.2Al2.4Ga2.6O12:Ce,Mo; Y0.8Gd2.2Al2Ga3O12:Ce,Mo and Gd3Al2Ga3O12:Ce
respectively. The temperature dependence on radioluminescence are also measured
and discussed.
Keywords: Garnet; Light yield, Scintillation, decay time, Y0.8Gd2.2(AlGa)5O12:Ce.
78
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Development of Automatic Control System for Solar
Drying Cabinet
Supakorn Wattanasri1, Patompong Jaroentia1, Nattawut Wannasopa1, Bpantamars
Phadungchob1, Sutiam Kruawan1, Natthida Khiewbanyang1 and Thitipong
Wutisart1, a
a<[email protected]>
ABSTRACT
This paper presents the design of thin layer directs solar drying cabinet with
automation assist for controlling moisture and temperature inside the cabinet. High
temperature may cause the damage on dried products and in drying process need low
humidity to carry the water out from products. Two motors with ArduinoTM
microcontroller were used to control the air inlet and outlet of solar drying cabinet.
The fan speed at the two motors were controlled from the temperature and relative
humidity conditions which were detected from thermometer and relative humidity
sensors. The electric power of motors and controller supplied by PV-cell with battery
for low light and night time drying. The cabinet could reach the air temperature from
inlet air temperature was at 36.1oC to 46.6oC at the inside the cabinet and the relative
humidity could reduce from 55%RH to 21%RH in the cabinet
Keywords: Solar dryer, Automatic control system, Drying cabinet,
Temperature control
79
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
The Study on Structural, Optical and Luminescence
Properties of New Phosphor: Gd2Y(1-x)DyxAl2Ga3O12
E. Kaewnuam1, a, A. Angnanon2,3 and J. Kaewkhao2,3
1Physics Program, Faculty of Science and Technology, Muban Chombueng Rajabhat
University, Ratchaburi 70150, Thailand
2Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat
University, Nakhon Pathom, 73000, Thailand
3Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon
Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand
a<[email protected]>
ABSTRACT
The Gd2Y(1-x)DyxAl2Ga3O12 phosphors were prepared by the solid state reaction to
study in the structure, photon absorption, photoluminescence and radioluminescence
properties. The XRD represents a crystalline cubic as the main structure of phosphor.
The Y atomic position were successfully replaced by Dy in phosphor with Dy
concentration (x) in a range of 0.25 - 1.00 mol. This phosphor absorbed the photons
with various wavelength in the UV, VIS and NIR region, shown by the absorption
spectra. Both direct Dy3+ and indirect through Gd3+ excitation caused the strong
photoluminescence around 481 and 581 nm under the 4f-4f transition of Dy3+ ion.
The photoluminescence decay times of phosphors are around 0.12 – 0.74 ms. The
developed phosphors perform a good response to the X-rays in the
radioluminescence spectroscopy.
Keywords: phosphor, luminescence, dysprosium, gadolinium
80
11thInternational Science, SocialScience, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Measurement and analysis of specific activities of natural
and anthropogenic radionuclides in fresh Turmeric
(Curcuma longa L.) from Lan Khoi Sub-district,
Pa Phayom district, Phatthalung
Prasong Kessaratikoon1, a Kongkiat Ninsalai2, b Ruthairat Boonkrongcheep1,c and
Nopparit Changkit3,d
1Nuclear and Material Physics Research Unit (NuMPRU), Department of Basic Science
and Mathematics, Faculty of Science, Thaksin University, Songkhla Campus,
Songkhla 90000, Thailand
2Ungraduate Student, Bachelor of Education (Science-Physics), Faculty of Education,
Thaksin University, Songkhla Campus, Songkhla 90000, Thailand
3Thailand Institue of Nuclear Technology (Public Organization), 9/9 Moo 7 Saimoon
Sub-District, Ongkarak District, Nakhon Nayok, 26120, Thailand
a<[email protected]>, b<[email protected]>,
c<[email protected]>, [email protected]
ABSTRACT
Turmeric (Curcuma longa L.) is one of the popular medicinal plant that is widely
used and consumed in Thailand. In particular, it is taken to mix with curry and used
as an herbal medicine for the general public. In this study, the specific activities of
natural (226Ra, 232Th and 40K) and anthropogenic (137Cs) radionuclides which were
accumulated in rhizome of fresh Turmeric plant, were measured and analyzed by
using high purity germanium detector (HPGe) and gamma spectrometric analysis
system. Total 2 0 samples of fresh turmeric were collected from Lan Khoi sub-
district, Pa Phayom district, Phatthalung province and then were prepared with the
standard methodology following IAEA manual. It was found that the range values
of 226Ra,232Th, 40K and 137Cs were < 1.48 - 4.36, 7.78 - 17.65, 719.52 - 974.43 and
< 1.40 - < 2.31 Bq/kg with the average values the range was 1.89 ± 0.07, 10.30 ±
0.37, 818.03 ± 22.85 and <1.82 Bq/kg, respectively. According to the asymmetrical
distribution of specific activities of all required radionuclides, the median values of
226Ra, 232Th and 40K were used to evaluate some related radiological hazard indices
which are annual radionuclide intake (Da), annual effective dose (Deff), total annual
effective dose (Dtotal) and Excess Lifetime Cancer Risk (ELCR). Furthermore, the
results would also be presented and compared to national and international
recommended data. Moreover, it was clearly found that all measured and evaluated
values still save to consumption lesser than recommended data from UNSCEAR.
Keywords: Turmeric (Curcuma longa L.), High purity germanium detector
(HPGe), Radiological hazard index, Excess lifetime cancer risk
81
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Study of Iron and Zinc Concentration and Localization
in Rice Seeds
Piyanuch Orpong1, a, Kanokporn Boonsirichai1, Ratchai Fungklin2 and
Roppon Picha1
1Nuclear Technology Research and Development Center, Thailand Institute of
Nuclear Technology (Public Organization), Thailand
2Nuclear Technology Service Center, Thailand Institute of Nuclear Technology
(Public Organization), Thailand
a<[email protected]>
ABSTRACT
Iron and zinc are important elements for plant and human growth. In this study,
Pathum Thani 1 (PTT1) rice seeds (M3 generation) were studied for isotopic
composition using Neutron Activation Analysis (NAA) technique for iron and zinc
concentration. NAA was conducted at Thai Research Reactor (TRR-1/M1). The
samples were divided into two groups (non-irradiated and irradiated with 300 Gy
gamma). SRM 1568a (Rice Flour) was used as the standard to verify iron and zinc
concentration values. The localization of iron and zinc was determined by using
histochemical techniques (determined using Prussian blue staining for iron and
dithizone staining for zinc). The results were statistically analyzed using Python
code. From NAA analysis, zinc was found in all samples while iron was not detected
in some samples. The concentration of iron and zinc that was found in irradiated
seeds were different from non-irradiated seed. Zinc concentration was significantly
increased in irradiated seed. The histochemical results show that iron and zinc were
mostly accumulated in the embryo and aleurone layers. There is no difference
between non-irradiated and irradiated seed.
Keywords: iron, zinc, NAA, localization, rice
82
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Radiation and fast neutron shielding properties of nickel-
based superalloys: Inconel 600, 718 and 725 superalloys
K. Sriwongsa1,2,a, J. Sirimongkolchaikul2,b, C. Sukrasorn2,c, T. Bussaparoek2,d,
S.Kanunghet2,e, T. Phansuea2,f, P. Glumglomchit3,g, P. Limkitjaroenporn4,5,h
and J. kaewkhao4,5,i
1Lecturers responsible for Bachelor of Education Program in Physics, Faculty of
Education, Silpakorn University, Nakhon Pathom, Thailand
2The demonstration school of Silpakorn University, Nakhon Pathom, Thailand
3Huahin Vitthayalai School, Hua-Hin, Prachuapkhirikhan, Thailand
4Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat
University, Nakhon Pathom, Thailand
5Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon
Pathom Rajabhat University, Nakhon Pathom, Thailand
a<[email protected]>, b<[email protected]>,
c<[email protected]>, d<[email protected]>,
e<[email protected]>, f< [email protected]>
g<[email protected]>, h<[email protected]>
i<[email protected]>
ABSTRACT
This study simulated the radiation shielding parameters for nickel-based
superalloys: Inconel 600, 718 and 725 superalloys. The partial interactions, mass
attenuation coefficients (m), effective atomic numbers (Zeff), effective electron
densities (Nel), and half value layer (HVL) at photon energies ranging were
estimated theoretically by WinXCom software program. Moreover, buildup factors
(EABF and EBF) were determined using geometrical progression (G-P) fitting
method for energies ranging 0.015-15 MeV at deep penetration 1-40 mfp (mean
free path). Lastly, fast neutron removal cross sections (R) were simulated by
partial density method at energies 2-12 MeV. The results found that nickel-based
superalloys Inconel 725 had excellent radiation shielding. Also, these sample were
compared with some standard concrete too.
Keywords: Nickel-based superalloys, Inconel 600, 718 and 725 superalloys,
Buildup factors, Fast neutron.
83
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
The impact of WO3 additive on radiation shielding
properties of TeO2–BaO glass system
S. Ravangvong1,a, K. Sriwongsa2,3,b, P. Glumglomchit4,c, N. Suksee4,d,
P. Kaewket4,e, W. Katekeaw4,f , W. Nisspa 4,a and J. Kaewkhao5,6,g
1Division of Science and Technology, Faculty of Science and Technology, Phetchaburi
Rajabhat University, Phetchaburi, 76000, Thailand
2Lecturers responsible for Bachelor of Education Program in Physics, Faculty of
Education, Silpakorn University, Nakhon Pathom, Thailand
3The demonstration school of Silpakorn University, Nakhon Pathom, Thailand
4Huahin Vitthayalai School, Hua-Hin, Prachuapkhirikhan, Thailand
5Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat
University, Nakhon Pathom, Thailand
6Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon
Pathom Rajabhat University, Nakhon Pathom, Thailand
a<[email protected]>, b<[email protected]>,
c<[email protected]>, d<[email protected]>,e<[email protected]>,
f<[email protected]>, g<[email protected]>
ABSTRACT
In this research, a series of (70–x) TeO2: 30BaO: xWO3 glass systems (where x =
10, 20, 30, 40 and 50 mol%) have been simulated in terms of radiation shielding
behaviors. The simulation of mass attenuation coefficients (μm), effective atomic
numbers (Zeff) and effective electron densities (Nel) were calculated by WinXCom
software program at energies ranging from 1 keV–100 GeV. The method of
geometric progression (G–P) fitting have been used to calculate at wide energies
ranging from 15 keV–15 MeV and up to 40 penetration depths (mfp) for buildup
factors: exposure and energy absorption buildup factors (EBF and EABF). The
simulated data reports that WO3 partial replacement of TeO2 in glass system which
increases behavior of radiation attenuation and shown the excellent shielding
properties and potential to use as a transparent shielding material.
Keywords: Radiation shielding, Tellurite glass, Build-up factors
84
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
The Effect of Plasticizers on Properties of Thermally
Crosslinked Gelatin Film
Bawornkit Nekhamanurak1, a and Rattikarn Khankrua1, b
1 Department of Materials Engineering, Faculty of Engineering, Rajamangala University of
Technology Rattanakosin, 96 Mu 3 Phutthamonthon Sai 5 Rd., Salaya, Phutthamonthon,
Nakhon Pathom 73170, Thailand
a<[email protected]>, b<[email protected]>
ABSTRACT
The market of edible films and coatings has been growing exponentially and
continuously. A gelatin material was selected for the development of edible films in
this research. Plasticizers; glycerol, propylene glycol, PEG400 and PEG4000 were
chosen for comparison. Dehydrothermal treatment (DHT) crosslink process were
used for crosslinking gelatin film. The effect of plasticizers on physical
characteristics, thermal properties and the moisture absorption of crosslinked and
non-crosslinked gelatin films were study. The results showed that the addition of all
plasticizers did not change the color of the gelatin film, except PEG4000. The color
of plasticized crosslinked gelatin films became more yellowish compared to those of
non-crosslinked plasticized gelatin films. In the case of non-plasticized gelatin fim,
Tg and moisture absorption of crosslinked gelatin film was lower than non-
crosslinked gelatin film. The addition of plasticizers affected the moisture absorption
of films.
Keywords: Edible Film, Gelatin, Plasticizer, Dehydrothermal Treatment, Crosslink
85
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Synthesis, characterization, and photocatalytic application
of Ba-doped ZnO synthesized via facile precipitation
Sucheewan Krobthonga, Kullanat Phluenchitb, Netiphong Keawkandac,
Thitaree Ariyatatchukod, Sasimonton Moungsrijune, Supphadate Sujinnapramf
and Sutthipoj Wongrerkdeeg
Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University
Kamphaeng Saen Campus, Kamphaengsaen, Nakhon Pathom 73140 Thailand
a<[email protected]>, b<[email protected]>, [email protected],
d<[email protected] >, e<[email protected]>, f<[email protected]>,
g<[email protected]>,
ABSTRACT
This work presents a facile synthesis of ZnO and barium-doped ZnO (ZnO:Ba) via
precipitation for photocatalytic application. Scanning electron microscope and
transmission electron microscope images showed that both ZnO and ZnO:Ba were
nanoparticles. The ZnO:Ba had lower particle sizes than ZnO around one-half. X-
ray diffraction pattern and selected area electron diffraction pattern analyses revealed
hexagonal wurtzite polycrystalline structures for ZnO and ZnO:Ba. Additional to the
crystal size calculation, the ZnO:Ba had a reduction in crystal sizes. It is well-known
that small sizes can increase the surface-to-volume ratio of ZnO:Ba, which should
suitably promote the reaction rate for photocatalytic application. Moreover, the
existence of surface chemical defects, detected from Fourier-transform infrared
spectroscopy, imply that photocatalytic activity might be accelerated because the
defects also act as interaction centers. ZnO and ZnO:Ba were utilized as
photocatalysts to test the carbaryl degradation under UV irradiation. ZnO:Ba
exhibited a higher degradation rate constant of 17.3410-2 min-1 in comparison with
ZnO (12.4010-2 min-1), indicating that ZnO:Ba had higher photocatalytic
performance than ZnO.
Keywords: ZnO, barium, precipitation, photocatalyst, carbaryl
86
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Oxidation Behavior of Nanostructure Sputtered
Titanium Nitride Thin Films
Adisorn Buranawong1, 2, a and Nirun Witi-anun1, 2, b, *
1 Department of Physics, Faculty of Science, Burapha University,
Chonburi 20131 Thailand
2 Thailand Center of Excellence in Physics (ThEP), PERDO, CHE,
Bangkok 10400 Thailand
a<[email protected]>, *b<[email protected]>
ABSTRACT
The oxidation behavior of reactive DC magnetron sputtered TiN thin films were
investigated under annealing temperature ranging from 400 to 700 oC in the ambient
atmosphere using X-ray diffraction, Energy dispersive X-ray spectroscopy and
Field – emission scanning electron microscopy techniques, respectively. The
oxidation rate and oxidation activation energy of the films were also calculated from
parabolic and Arrhenius relations. The as-deposited film was polycrystalline TiN
structure. After annealing at 450 oC, the TiO2 rutile structure was found in the XRD
spectra and the relative integrated intensity of the oxide phase increased gradually
with temperatures. The EDS analysis was good confirmed the XRD patterns in which
the increase of the O content. The grain growth resulting from grain coalescence
occurred through the annealing temperatures. The cross-sectional analysis showed
that a very thin dense oxide overlayer was present at 400 °C and the oxide thickness
increased gradually with temperatures. Moreover, the films were fully oxidized into
a porous structure after 650 oC. The results reveled that the films showed an oxidation
rate from 400 °C and the oxidation activation energy of films was 156.56 kJ/mol.
Keywords: Characterization, Oxidation, Titanium Nitride
87
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Potentials for construction application from the
mechanical properties of rocks found fossils at soil wells,
La-ngu District, Satun Geopark area
Pitchpilai Khoonphunnarai1, a and Phayao Yongsiriwit1
1Faculty of Science and Technology, Songkhla Rajabhat University,
90000 Songkhla Thailand
a<[email protected]>
ABSTRACT
Studied hardness of rocks for the feasibility of utilization in construction at soil well,
La-ngu district, Satun Geopark. Rocks sample was collected from a rock hills that is
60 meters long and 9 meters high. The rock hills are characterized by geological
features, with a clear layered rock formation. Rock samples were collected 3 points,
5 layers each, approximately 1-1.5 meters from each other. From the examination of
the rock types found that is sedimentary rocks all there are 3 types: calcareous
siltstone, shale, and limestone. The point load strength test of rock samples was
performed with point load equipment according to standard ASTM D5731 with
values in the range of 3.20 – 4.29 MPa an average of 3.391.78 MPa, 3.361.70 MPa
and 3.281.15 MPa, respectively. The uniaxial compressive strength was
74.7539.15 MPa, 73.6037.16 MPa, respectively. When examining the hardness of
rock samples in the research area with research that tested the hardness of various
rocks in Thailand and abroad and in construction, it was found that sedimentary rocks
in the study area could be used for construction purposes.
Keywords: sedimentary rock, point load strength, uniaxial compressive strength
88
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Urban Heat Island in Songkhla Province, Thailand.
Phayao Yongsiriwit 1,a and Pitchpilai Khoonphunnarai 1
1Faculty of Science and Technology, Songkhla Rajabhat University
Songkhla, Thailand
a<[email protected]>
ABSTRACT
The Study of phenomenon of the urban heat islands in Songkhla Province Thailand,
analysis via using the daily air temperature data and monthly minimum-maximum
air temperature from 4 Meteorological stations of Songkhla Province ( Songkhla,
Hat Yai, Kho Hong and Sadao ) during 2008 - 2017. The result shows that the
average daily air temperature in Songkhla, Hat Yai, Kho Hong is 1 - 2 ºC higher than
in Sadao during the night time period. The intensity of the urban heat island
phenomenon differs significantly by 1 - 3 ºC difference in the dry season (winter and
summer). In addition, the geographic location (near-far distance to the sea) is an
important factor in regulating the temperature changes of each station.
Keywords: Urban heat island, Urbanization, Rural, Climate
89
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Enhancement of electrostriction behavior of P(VDF-HFP)
composites nanofibers with polyaniline (emeraldine base)
Nikruesong Tohluebaji 1, a, Jureeporn Yuennan2, b, Chatchai Putson3, c
and Nantakan Muensit 3, d
1 Faculty of Science and Technology, Princess of Naradhiwas University, Narathiwat,
96000 Thailand
2 Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University, Nakhon
Si Thammarat, 80280, Thailand
3Division of Physical Science (Physics), Faculty of Science, Prince of Songkla University,
Songkhla, 90112. Thailand
a< [email protected] >, b< [email protected] >, c< [email protected] >,
d< [email protected]>
ABSTRACT
This study focuses on an enhancement dielectric and electrostrictive properties of
Poly (vinylidene fluoride-hexafluoropropylene), P(VDF-HFP) nanofibers added
with conductive polymer polyaniline (PANI). The composites nanofibers were
fabricated by electrospinning method with 0, 0.5, 1, 1.5, 3 and 5 wt% PANI. The
surface morphology, crystallinity and phase structure were investigated by SEM,
XRD and FTIR, respectively. The mechanical, electrical, and electrostrictive
properties of all the samples were also studied. The P(VDF-HFP)/PANI composite
nanofibers exhibit the uniform fibers without any bead formation, high dielectric
constant and electromechanical response. The results indicate that the PANI filler in
P(VDF-HFP) nanofiber can improve the electrostriction behavior attributed to the
crystalline, phase structure, dielectric properties and interfacial charge distributions.
The electrostrictive coefficient increases related to the PANI contents. Moreover,
electrostrictive strain response improve under low electric fields. The above results
provide great possibilities for achieving in actuators, microelectromechanical
systems, sensors based on electrostrictive phenomena.
Keywords: Poly (vinylidene fluoride-hexafluoropropylene), Dielectric properties,
Polyaniline (Emeraldine base), Electrostrictive properties
90
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Influence of CaCl2·xH2O on morphological, structural,
mechanical and dielectric properties of P(VDF-HFP) film
Jureeporn Yuennan1, a, Niruesong Tohluebaji2, b and Nantakan Muensit3, c
1Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University,
Nakhon Si Thammarat, 80280, Thailand
2Faculty of Science and Technology, Princess of Naradhiwas University,
Narathiwat, 96000, Thailand
3Division of Physical Science (Physics), Faculty of Science, Prince of Songkla University,
Songkhla, 90112. Thailand
a<[email protected]>, b< [email protected]>, c< [email protected]>
ABSTRACT
Flexible dielectric films made by polymer composites are considered to be a potential
candidate for the energy conversion and sensors. In this study, poly(vinylidene
fluoride-co-hexafluoropropylene) P(VDF-HFP) film filled with various mass
fractions (wt%) of calcium chloride salt (CaCl2·xH2O) was prepared through a
solution casting method. Three kinds of CaCl2·xH2O loadings, i.e., CaCl2,
CaCl2·2H2O and CaCl2·6H2O were employed. The detailed structure and properties
of all samples were characterized by inspection of scanning electronic microscopy
(SEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy
(FT-IR) and x-ray diffraction (XRD), thermogravimetric analysis (TGA), tensile
testing and LCR meter. From the scanned SEM and AFM images, the P(VDF-
HFP)/CaCl2·xH2O composite films exhibit the porous structure on the surface. The
FTIR and XRD spectra confirmed the presence of electroactive -phase on the
composite films in which relative -phase fraction reaches up to 80%. Furthermore,
high dielectric constant is also observed in the P(VDF-HFP)/CaCl2·xH2O composite
films.
Keywords: Poly(vinylidene fluoride-co-hexafluoropropylene, Calcium chloride salt,
Flexible dielectric film.
91
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Effects of Er-Doping on Crystalline Structure and Optical
Properties of BiVO4 Nanoparticles Prepared via
Sonochemical Process
Tanisara Noinonmueng1, Thanophon Kansaard1,
Tirapat Wechprasit1, Wanichaya Mekprasart1, Kanokthip Boonyarattanakalin1,
Kanoknan Phacheerak1 and Wisanu Pecharapa1,a
aCollege of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang,
Ladkrabang / Bangkok, 10520, Thailand
a<[email protected]>
ABSTRACT
In this report, we demonstrate the structure, morphological, and optical properties of
BiVO4 nanoparticles doped with different contents of rare earth Erbium (Er) element
prepared by one-step sonochemical process. The structural and morphological
characterization were carried out by scanning electron microscopy (SEM), X-ray
diffraction technique (XRD) and Raman spectrometer. X-ray diffraction and Raman
spectra reveal the structural transition from monoclinic to tetragonal structure with
Er. Optical properties of the prepared samples were investigated by diffuse
reflectance technique and the corresponding optical band gaps were calculated by
using Kullbelka-Munk equation. It is found that Er dopant has significant influence
on the change of optical absorption and optical band gap of BiVO4 host material.
Further details of results and discussion will be represented.
Keywords: Bismuth vanadate, Erbium doping, Sonochemical process
92
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Light-guide Plate Based on Epoxy/Silica Powder
Composite for Light Illuminating Application
Aphisit Manivong1, a Kanokthip Boonyarattanakalin1, Krisana Chongsri2,
Wisanu Pecharapa1
1 College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang,
Bangkok, 10520 Thailand
2 Department of Applied Physics, Faculty of Science and Technology, Rajabhat
Rajanagarindra University, Chachoengsao, 24000 Thailand
a<[email protected]>
ABSTRACT
This paper presents a facile process to fabricate light-guide plate with high intensity
of light from LED based milled silica particles. Silica powder was first prepared via
high energy ball milling process and then distributed in epoxy resin for molding
light-guide plate. Effects of silica powder content embedded in the light-guide plate
on morphology, distribution and optical properties are investigated. The increment
of the silica powder content also leads to the formation of aggregated particles and
decreasing light illuminating intensity. Furthermore, the light guiding mechanism of
the light-guide plate in term of light scattering is proposed when light passes through
the interface of epoxy/silica. Further details of results and discussion will be
presented.
Keywords: Light scattering particles, Light-guide plate, silica powder.
93
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
The forecast of rainfall from amount of water vapor in
each region of Thailand
Sayan Phokate1,a
1Department of Applied Physics, Faculty of Engineering, Rajamangala University
of Technology Isan, Khon Kaen Campus, Nai Muang Sub-district,
Muang District, Khon Kaen, 40000, Thailand.
a<[email protected]>
ABSTRACT
The objective of the study was to forecast rainfall from the amount of water vapor in
the air. The relationship between the upper air data and the surface data from 2005
to 2018 was used to create a mathematical model at the same station to determine
the amount of water vapor. The findings indicated that, the relationship has a
relatively high level of reliability, the correlation coefficient was 0.891. The amount
of water vapor from upper air data nearly was equal to the value from the model. The
difference in the root mean square error was 0.428 cm. The results showed that the
rainfall is related to the amount of water vapor in the air in mathematical models
which are different for each region. The models were tested with an independent data
set for 2019. It was found that the monthly average rainfall from the model were
consistent with the measured values, which are not significantly different at the level
of 0.05. The root mean square error was 43.62 mm. The correlation coefficient was
0.841.
Keywords: amount of water vapor, rainfall, cloud cover, upper air data
94
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
The Preparation of Reversible Thermochromic Mn-Doped
Ca-Zn-Al-O Inorganic Materials
Vorrada Loryuenyong1, a, Pitsinee Juikatu1, b, Pichanut Sirisukha1, c,
Ukrit Kumleing1, d and Achanai Buasri1, e
1Department of Materials Science and Engineering, Faculty of Engineering and Industrial
Technology, Silpakorn University, Nakhon Pathom 73000, Thailand
a<[email protected]>, b<[email protected]>, c<[email protected]>,
d<[email protected]>, e<[email protected]>
ABSTRACT
Reversible thermochromic inorganic materials have recently attracted tremendous
attentions due to their durable, reversible, and controllable temperature-responsive
color-change behaviors. These materials are normally used in temperature-indicating
applications that requires a reversible sharp visual color change. Garnet structures
have been reported as a host structure for reversible intermediate-to-high temperature
thermochromic materials. However, most of them are based on rare-earth garnets or
an expensive Ga-based garnet such as Y3Fe5O12, Ca14Zn6Ga10O35, and Sm3Fe5O12.
In this research, we reported the thermochromic behavior of Ca14Zn6Al10-xMnxO35 (x
= 0, 0.5,1.0, 1.5, 2) garnet structure prepared by a high-temperature solid-state
reaction method. The effects of Mn content and calcination temperatures were
investigated. Thermochromism of all samples showed gradual tunability of color.
However, the optimal thermochromic performance was observed for Ca14Zn6Al10-
xMnxO35 samples with x = 0.5 and 1 and sintering temperature of 1200°C. The
resultant samples showed the reversible change in color from green to pink at around
400-500°C, which was due to the co-contribution of Mn4+ and Mn5+ in the tetrahedral
sites.
Keywords: Thermochromic materials, Reversibility, Garnet, UV-vis spectroscopy
95
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Effect of Sb2O3 Addition on Properties of BaTiO3
Ceramics
Sutatip Thonglem1, a, Thanin Nuanthong1, b and Pratthana Intawin 2, c
1Materials science program, Faculty of Science and Technology, Phranakorn Rajabhat
University, Bangkok, Thailand, 10220
2Division of Physics, Faculty of Science and Technology, Rajamangala University of
Technology Thanyaburi, Pathum Thani 12110, Thailand
a<[email protected]>, b<[email protected]>, c < [email protected]>
ABSTRACT
This research aimed to study the effect of Sb2O3 addition on the properties of BaTiO3
ceramics. The ceramic powders were synthesized by the mixed oxide method using
BaCO3 and TiO2 as starting materials, and the Sb2O3 was added with x wt% (x= 0-
2). These mixing powders were calcined at 1200 °C for 4 hours with heating/cooling
rates of 5 °C/min. Then, the ceramics were prepared from these ceramic powders by
solid-state sintering. The ceramic powders were molded into pellets and sintered at
1250 °C for 4 hours with heating/cooling rates of 5 °C/min. The crystal structure and
microstructure of all samples were investigated by X-ray diffractometer (XRD) and
scanning electron microscopy (SEM). The density and dielectric constant of
ceramics were investigated by Archimedes immersion technique and LCR meter.
Results indicated that the ceramic powders showed pure BaTiO3 phase with
tetragonal structure (JCPDS no. 05-0626). While Sb2O3 additions affect the
overlapping of (002) and (200) peaks of the BaTiO3 structure and the decreasing of
particle size of ceramic powders Both bulk densities and dielectric constants at 10
kHz of ceramics showed the highest values at 0.4 wt% of Sb2O3 addition.
Keywords: Sb2O3, BaTiO3, Tetragonal, Dielectric constant
96
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Synthesis of Bioglass-ceramics by using Natural
Raw Materials
Thanaporn Boonchoo1, a and Phatraya Srabua2, b
1Faculty of Science and Technology, Rajamangala University of Technology Phra Nakhon,
Bangkok 10800, Thailand
2Scientific and Technological Research Equipment Center (STREC), Chulalongkorn
University, Bangkok 10330, Thailand
a<[email protected]>, b<[email protected]>
ABSTRACT
The aim of this work was to analyze the effect of using rice husk ash and shell as
raw materials glass-ceramic based on the SiO2-Na2O-CaO-P2O5 system on physical,
mechanical properties and bioactivity. All of the investigated compositions were
prepared by melting at 1300C. The resulting glass samples were heated at different
temperatures ranging from 800 to 1000C with fixed dwell-time for 2 h. The
crystalline phases were characterized by X-Ray Diffraction (XRD) and Scanning
electron microscope (SEM) techniques. Differential thermal analysis (DTA) showed
that the glass transition occurred at 500C. The main crystalline phase is a sodium
calcium silicate. The optimum heat treatment temperature, at which the maximum
mechanical value could be obtained, is around 1000C.
Keywords: rice husk ash, shell, glass-ceramic
97
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Investigation of Dielectric and ferroelectric of Niobium
and Lithium Co-Doped Bismuth Sodium Potassium
Titanate Ceramics
Thanaporn Boonchoo1, a, Phatraya Srabua2, b, Chatchai Kruea-In3,c
1Faculty of Science and Technology, Rajamangala University of Technology Phra Nakhon,
Bangkok 10800, Thailand
2 Scientific and Technological Research Equipment Center (STREC), Chulalongkorn
University, Bangkok 10330, Thailand
3 Faculty of Science and Technology, Chiang Mai Rajabhat University, Chiang Mai 50300,
Thailand
a<[email protected]>, b <[email protected]>, c <[email protected]>
ABSTRACT
In this study was synthesized and investigated the dielectric and ferroelectric
properties of Nb and Li co-doped Bi0.5(Na0.81K0.19)0.5TiO3 ceramics. The solid
state reaction technique was used for fabrication process of this ceramic system. The
temperature and dwelling time for calcinations was 850 °C and 4 h, respectively. The
green pellet of the molding was sintered at 950-1025 °C for 2 h. The dielectric
properties were changed depending on the level of additive contents. The dielectric
constants at Tm were 5482, 3343, 2789, and 2154 for x=0, 3, 6 and 9 wt. which
measured at 10 kHz, respectively. The ferroelectric behaviors changed from normal
ferroelectric state to ergodic relaxor ferroelectric state at x>3 wt of the additive.
Keywords: BNKT, dielectric, ferroelectric
98
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Effect of Mn doping on Structural and Electrochemical
Properties of ZnO nanoparticles
Jessada Khajonrit1, a, Chatpong Bangbai1, Niwat Hemha2, Nakharin Sudsoon3,
Jirapun Huaisan4 and Isara Kotutha5
1Department of Science and Mathematics, Faculty of Science and Health Technology,
Kalasin University, Kalasin, 46000, Thailand
2School of Physics, Institute of Science, Suranaree University of Technology, Nakhon
Ratchasima, 30000, Thailand
3Department of Industrial Technology, Faculty of Engineering and Industrial Technology,
Kalasin University, Kalasin, 46000, Thailand
4Department of Food Technology, Faculty of Agricultural Technology, Kalasin University,
Kalasin, 46000, Thailand
5Department of Applied Physics, Faculty of Engineering, Rajamangala University of
Technology ISAN (Khon Kaen Campus), Khon Kaen, 40000, Thailand
a<[email protected] >
ABSTRACT
In this work, Zn1-xMnxO (x = 0.05, 0.1, 0.2, and 0.3) nanoparticles were successfully
synthesized by a precipitation method. Their nanostructures were characterized by
X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission
electron microscopy (TEM), and Gas absorption techniques. Additionally, the
electrochemical behavior of the electrodes was performed in 3 M aqueous KOH
solution using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and
electrochemical impedance spectroscopy (EIS). The influence of the Mn-doping on
their nanostructures and electrochemical properties was investigated. The increasing
of the Mn content can affect nanostructures and electrochemical properties of the
electrodes. Therefore, the Mn-doped ZnO nanoparticles can be considered as a good
candidate for development as electrode materials in the energy storage applications.
Keywords: Mn-doped ZnO nanoparticles, electrochemical properties, electrode
materials, energy storage applications
99
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Fabrication, luminescence and scintillation properties of
Gd2YAl2.4Ga2.6O12 garnet ceramic
Prapon Lertloypanyachai1,a , Krittiya Sreebunpeng2,b, Nattasuda Yawai3,b, Warut
Chewpraditkul3,c, Weerapong Chewpraditkul3,d, Benxue jiang4, Martin Nikl5
1Faculty of Science and Technology, Muban Chombueng Rajabhat University,
Ratchaburi, 70150 Thailand
2 Faculty of science, Chandrakasem Rajabhat University, Bangkok, 10900, Thailand
3 Department of Physics, King Mongkut’s University of Technology Thonburi,
Bangkok, 10140, Thailand
4Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,
Shanghai, 201800, PR China
5Institute of Physics AS CR 10 Cukrovarnicka, Prague 6, 16200, Czech Republic
a<[email protected]>, b<[email protected]>, c< [email protected] >,
d< [email protected]>, e< [email protected]>,
ABSTRACT
Ce-doped Gd2YAl2.4Ga2.6O12 multicomponent garnet ceramic was fabricated by the
solid state reaction. The intense Ce3+ 5d1 → 4f luminescence was achieved under
excitation with UV light and X-rays. The studied sample showed a high light yield
of 22,200 photons/MeV and energy resolution of 13.5% under excitation with 662
keV γ rays from a 137Cs radioactive source. The scintillation response under
excitation with 5.5 MeV α particles from a 238Pu radioactive source was also
investigated and discussed. The timing characteristics under excitation with UV light
and γ rays will be further investigated. The Gd2YAl2.4Ga2.6O12:Ce ceramic
scintillator could be very useful sensors for X-rays imaging and high energy nuclear
radiation detection.
Keywords: Ce3+, Gd2YAl2.4Ga2.6O12:Ce, Ceramic, Luminescence, Scintillation
100
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Improved electroactive β phase nucleation and dielectric
properties of P(VDF-HFP) composite with Al(NO3)3·9H2O
fillers
Nikruesong Tohluebaji 1, a, Jureeporn Yuennan2, b, Chatchai Putson3, c
and Nantakan Muensit 3, d
1 Faculty of Science and Technology, Princess of Naradhiwas University,
Narathiwat, 96000 Thailand
2 Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University,
Nakhon Si Thammarat, 80280, Thailand
3Division of Physical Science (Physics), Faculty of Science, Prince of Songkla University,
Songkhla, 90112. Thailand
a< [email protected] >, b< [email protected] >, c< [email protected] >,
d< [email protected]>
ABSTRACT
Electroactive polymer thin films have gained tremendous attention from researchers
worldwide due to their excellent piezoelectric, pyroelectric, ferroelectric, and
dielectric properties. In this study, the poly (vinylidene fluoride-
hexafluoropropylene) P(VDF-HFP) film is facilely prepared by the solution casting
technique. The effect of aluminum nitrate nonahydrate (Al(NO3)3·9H2O) on the
crystalline phase and dielectric behavior of P(VDF-HFP) composite films is
systematically investigated. Experimental results founded that the P(VDF-HFP)
composite films exhibit the micro-pores structure on the top surface. Addition of the
Al(NO3)3·9H2O filler is found to enhance the electroactive phase by about 20%.
Furthermore, the dielectric constants of pure P(VDF-HFP) and P(VDF-HFP)/1.5
wt.% Al(NO3)3·9H2O films are derived as 8 and 28, respectively. These results
indicate that the Al(NO3)3·9H2O hydrated salt acts as the nucleation agent to produce
the crystallization of the phase resulted in improved dielectric constant in P(VDF-
HFP) composite films.
Keywords: Poly (vinylidene fluoride-hexafluoropropylene), Dielectric behavior,
Aluminum nitrate nonahydrate
101
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Luminescence and energy transfer of Tb3+/Dy3+
-doped SiO2-Al2O3-B2O3-La2O3-Gd2O3 glasses
Smit Insiripong1, Prapon Lertloypanyachai1, a, Teerakorn Petchteanchai1,
Jiraporn Kanlayabut1, Theeraporn Sawayo1, Nakarin Pattanaboonmee2,
Weerapong Chewpraditkul2, Danping Chen3
1Faculty of Science and Technology, Muban Chombueng Rajabhat University,
Ratchaburi, 70150 Thailand
2King Mongkut’s University of Technology Thonburi, Bangkok, 10140, Thailand
3Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,
Shanghai, 201800, PR China
a<[email protected]>
ABSTRACT
Tb3+/Dy3+ -doped glasses with composition of 15SiO2-25Al2O3-30B2O3- 22.5La2O3-
7.5Gd2O3 (mol%) were prepared by melt-quenching method. The
photoluminescence emission (PL) exhibited 5D3, 5D4 → 7FJ from Tb3+ (λex = 376 nm)
and 4F9/2 → 6HJ from Dy3+ (λex = 349 nm). The PL spectra showed various transitions
from the excited Tb3+, Dy3+ and Gd3+ ions which were calculated and displayed in
CIE diagram, Tb3+ (λex = 376 nm) and Dy3+ (λex = 349 nm) showed yellow-green
color but Gd3+ (λex = 270 nm) exhibited white light. The energy transfer (ET) studied
between Tb3+, Dy3+ and Gd3+ ions that was verified by photoluminescence excitation
and emission spectra in addition photoluminescence decay measurement. The light
yield (LY) of samples was excited with 662 keV for - rays and 5.50 MeV under
particles and compared with NaI(Tl). This work could be useful for light source or
radiation detection material.
Keywords: Tb3+, Dy3+, Gd3+, Energy transfer, Light yield
102
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Radon Measurement and Calculated radon exhalation
rate in Construction Materials from The Northeastern
Region of Thailand
Ritiron Samran1, b , Phachirarat Sola1,a, Uthaiwan Injaroen1 and Roppon Picha 1
1 Thailand Institute of Nuclear Technology (Public Organization),
Nakhon Nayok 26120, Thailand
a<[email protected]>, b<[email protected]>
ABSTRACT
Indoor radon concentration plays a vital role for the total annual effective dose. This
research investigates the radon gas found in concrete, which consists of rocks, sand,
and cement, and can be found in the majority of houses and buildings in Thailand,
to evaluate the possible health hazard of residents. Radon is measured using an
ionization radiation detector (ATMOS 12 DPX) and the values of the radon
concentration, exhalation rate, and annual effective dose are calculated. In this study,
concrete samples were collected from Loei, Khon Kaen, Nong Bua Lam Phu, Bueng
Kan, Nakhon Phanom, Mukdahan, Ubon Ratchathani, and Nakhon Ratchasima
provinces in the northeastern region of Thailand. The radon concentration in concrete
samples varies from 22±4 to110±8 Bq⸱m-3, that average is 56.77 Bq⸱m-3. The radon
exhalation varies from 4.2±0.8 to 55.1±4 Bq⸱kg-1⸱h-1, which the average is 15.47
mBq⸱kg-1⸱h-1. The annual effective dose varies from 0.6 to 0.1 mSv⸱y-1, that the
average is 1.47 mSv⸱y-1.
Keywords: Construction materials, Thailand provinces, Annual effective dose
103
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Banana Peel as a Biomordant for Dying Cotton Fabrics
with Marigold Flower Dye
Phannaphat Phromphen1, a, Rossaporn Jiamjariyatam2, b and
Bongkoj Boonburaphong2, c
1Faculty of Agro-Industry, Kasetsart University, 10900, Thailand
2 Faculty of Science, Srinakharinwirot University, 10110, Thailand
a<[email protected]>, b<[email protected]>, c<[email protected]>
ABSTRACT
This research aims to evaluate the tannin compounds extraction from the fresh
banana peel and investigate the optimal condition of using the banana peel extraction
as a biomordant in the dyeing process of cotton fabrics with marigold flower dye .
The cotton fabrics were dye with banana peel extraction by pre-mordanting, meta-
mordanting and post-mordanting methods. In the case of meta-mordanting, the ratios
of mordant to the dye solution were also varied. Thee colour strength (K/S), the wash
fastness and the light fastness of the control fabric and the dyed fabrics were also
inspected. It was found the optimum condition for tannin extraction from the fresh
banana peel was at 90C for 60 minutes. When dyeing cotton fabrics with marigold
flower dye by the pre-mordanting and post-mordanting method, the optimal
mordanting condition was achieved at 60C, 120 minutes as the dyed showed the
highest K/S value .However, the optimal condition of the meta-mordanting was
showed at 30C and the K/S of the dyed fabrics were also influenced by the ratio of
the mordant to the dye solution .The wash fastness and light fastness of the dyed
cotton fabric were improved, especially, the post-mordanting method .
Keywords: Biomordant, Banana peel, Cotton fabric, Marigold flower, Natural dye,
104
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Investigation of structural, optical, and electrical
properties of ZnO thin films for electro-optics devices
Sasimonton Moungsrijuna, Wongsathorn Kunwongb, Thitaree Ariyatatchukoc,
Sucheewan Krobthongd, Supphadate Sujinnaprame, Sutthipoj Wongrerkdeef
Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University
Kamphaeng Saen Campus, Kamphaengsaen, Nakhon Pathom 73140 Thailand
a<[email protected]>, b<[email protected]>, c<[email protected] >,
d<[email protected]>, e<[email protected]>, f<[email protected]>,
ABSTRACT
ZnO thin films were successfully coated on fluorine-doped tin oxide substrates using
the co-preparing technique of electrolysis and thermal oxidation. Firstly, a zinc metal
layer was deposited on the substrate by electrolysis of zinc nitrate aqueous solutions
for different deposition times. Then, the metal layer was oxidized to transform as
ZnO thin films by thermal oxidation at 450 C under ambient air pressure. Finally, a
post-treatment of the film was performed by calcination a furnace at 500 C. X-ray
diffraction patterns of ZnO thin films indicate the hexagonal wurtzite structure.
Fourier-transform infrared spectroscopy results confirm chemical structure of the
film is ZnO without residue. The average optical transmittance values in the visible
region are over 80%. The calculated band gap energy is in the range of 3.13 - 3.43
eV. The four-point probe measurement reveals various sheet resistance values of
165.48 - 666.51 /sq. For electro-optics property evaluation, the optical
transmittance and sheet resistance values were considered to calculate the figure of
merit. It is found that the highest value reaches 2.7810−3 −1, which indicates that
ZnO thin films have a potential application for electro-optics devices.
Keywords: ZnO, electrolysis, thermal oxidation, electro-optics devices
105
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Cement Wood Properties with Addition of Cement Wood
Waste Dust from Production Processes
Narit Triamnak1, a, Somjit Lapnonkawow1, b, Ausanee Sangrujee1, c,
Aripath Prowmasthuros1, d, and Thanongsak Nochaiya2, 3, e
1Department of Materials Science and Engineering,
Faculty of Engineering and Industrial technology, Silpakorn University,
Nakorn Pathom, 73000, THAILAND
2Department of Physics, Faculty of Science, Naresuan University,
Phitsanulok, 65000, THAILAND
3Research Center for Academic Excellence in Applied Physics,
Naresuan University, Phitsanulok 65000, THAILAND
a<[email protected]>, b<[email protected]>, c<[email protected]>,
d<[email protected]>, and e<[email protected]>
ABSTRACT
A large amount of waste dust is produced from finishing processes such as shaping
planning, and cutting in cement wood manufacturing. This waste, which usually is
in dust form, causes the higher cost of cement wood products by waste disposal
regulations and it needs to be reduced. In this study, the cement wood waste dust
addition was applied to the cement wood composite production. The characteristics
of the cement wood waste dust were carried out via Scanning Electron Microscope
(SEM) and X-Ray Diffraction Technique (XRD). The effect of the cement wood
waste dust on the cement wood composite mechanical properties were investigated
by MOR and Compressive test. It was found that the cement wood waste dust
consists of calcium hydroxide, calcite, calcium silicate hydrate, and cellulose.
Furthermore, the small amount addition of the cement wood waste dust could
improve the mechanical properties of the cement wood composites and the further
cement wood waste dust addition would decrease both MOR and compressive
strength.
Keywords: Cement Wood, Waste, Dust
106
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Enhancement of electrostriction behavior of P(VDF-HFP)
composites nanofibers with polyaniline (emeraldine base)
Nikruesong Tohluebaji1, a, Chatchai Putson2, b,
Nantakan Muensit 2, c and Jureeporn Yuennan3, d *
1 Faculty of Science and Technology, Princess of Naradhiwas University, Narathiwat,
96000 Thailand
2Division of Physical Science (Physics), Faculty of Science, Prince of Songkla University,
Songkhla, 90112. Thailand
3Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University, Nakhon
Si Thammarat, 80280, Thailand
a< [email protected] >, b< [email protected] >, c< [email protected]>,
*d< [email protected] >
ABSTRACT
This study focuses on an enhancement dielectric and electrostrictive properties of
Poly (vinylidene fluoride-hexafluoropropylene), P(VDF-HFP) nanofibers added
with conductive polymer polyaniline (PANI). The composites nanofibers were
fabricated by electrospinning method with 0, 0.5, 1, 1.5, 3 and 5 wt% PANI. The
surface morphology, crystallinity and phase structure were investigated by SEM,
XRD and FTIR, respectively. The mechanical, electrical, and electrostrictive
properties of all the samples were also studied. The P(VDF-HFP)/PANI composite
nanofibers exhibit the uniform fibers without any bead formation, high dielectric
constant and electromechanical response. The results indicate that the PANI filler in
P(VDF-HFP) nanofiber can improve the electrostriction behavior attributed to the
crystalline, phase structure, dielectric properties and interfacial charge distributions.
The electrostrictive coefficient increases related to the PANI contents. Moreover,
electrostrictive strain response improve under low electric fields. The above results
provide great possibilities for achieving in actuators, microelectromechanical
systems, sensors based on electrostrictive phenomena.
Keywords: Poly (vinylidene fluoride-hexafluoropropylene), Dielectric properties,
Polyaniline (Emeraldine base), Electrostrictive properties
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Effect of ZnO Blocking Layer on Efficiency of Dye-
Sensitized Solar Cell
Prathan Prachopchok1,a, Suebtarkul Suchat2,b, Arthit Sansomboon2,c, Janesuk
Potisar1,d, Surayot Supprakob1,e, Patcha Dokmai1,f, Warunee Kerdsang2,g,
Pheeraphong Bunroek1,h and Chanu Photiphitak3, i
1Department of Physics, College of Teacher Education, Pranakhon Rajabhat University,
Bangkok, 10220, Thailand
2Faculty of Science and Technology, Phranakhon Rajabhat University, Bangkok, 10220,
Thailand
3Faculty of Science and Technology, Suan Dusit University, Bangkok, 10300, Thailand
a< [email protected] >,b< [email protected]>,c<[email protected]>,
d<[email protected]>,e<[email protected],f<[email protected]>,
g<[email protected]>,h<[email protected]>,i<[email protected]>
ABSTRACT
Zinc oxide (ZnO) thin films were prepared by spray pyrolysis on TiO2/FTO/glass
substrate at various growth temperatures for use as blocking layer in the dye-
sensitized solar cells. The effects of growth temperature of ZnO thin films on optical
and electrical properties were studied. Dye-sensitized consisted of TiO2 working
electrode, Pt counter electrode, rutherium () (N719) dye and lithium iodide
electrolyte. Working electrode of dye-sensitized solar cell was used ZnO thin films
at various growth temperatures as blocking layer. I-V characteristic was used to
measure the solar cell efficiency.
Keywords: ZnO blocking layer, Spray pyrolysis method, Dye-sensitized solar cell
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Reducing the Risk of Capacitor Input Open-fault
in a CMOS Schmitt-trigger Inverter Oscillator Circuits
Weera Rattanangam1, a and Chuthong Summatta1, b
1Faculty of Industrial Technology, Nakhon Phanom University,
214 Moo 12 Nittayo Road, Nongyart District, Nakhon Phanom, Thailand 48000
a<[email protected]>, b<[email protected]>
ABSTRACT
Failure of the CMOS Schmitt-trigger inverter open-fault and capacitor open-fault in
the case of a CMOS Schmitt-trigger inverter oscillator circuit will cause a self-
fluctuation of the device causing the high-frequency to be emitted on the output side.
Because the balance of internal latent capacitance and smaller capacitance
approximately 5-20 pF. In this article present, the risk reduction of Failure of the
CMOS Schmitt-trigger inverter open-fault and capacitor open-fault in the case of a
CMOS Schmitt-trigger inverter oscillator circuit is presented by adding a capacitor
between Gate pin and Drain pin of Q1 by illusion of equivalent circuit. Which causes
the internal latent capacitance unbalance, so that it does not cause self-oscillation in
the case of input open-fault, and in the case of a oscillator circuit, the feedback
resistor is not combined with the internal latent capacitance, but is combined with
the add capacitance, so that the higher frequency self-fluctuation does not occur. The
circuit was tested with a computer simulation program and experimental circuit.
Keywords: CMOS inverter, Self-oscillation, Open-fault, Fail-safe
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
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Adaptive Filter FIR for voice recognition
in Thai speech recognition system
Supavit Muangjaroen1, a Worawut Jamla 1,band Sakol Udomsiri1,c
1 School of Electrical Engineering, Faculty of Engineering , Pathumwan Institute of
Technology, Bangkok,10330, Thailand.
a<[email protected]>, b<[email protected]>
c<[email protected]>
ABSTRACT
This paper presents the design of an FIR filter applied to a procedural speech
recognition system using a vector machine supported classification technique. By
testing with the vowel recognition in the Thai language it is also possible to compare
the precision results of the speech recognition. By adjusting the frame size, time and
the overlap time of the signal filtering with the window function. The characteristics
were determined for 1 to 3 frequency recognition. The results of the experiment
demonstrated that the Thai language vowel recognition using a vector-machine-
supported classification algorithm was used this In comparison to filter applications,
the window function yielded different precision values, and it was found that the
adaptive filter FIR yielded the accuracy, but was similar to that of other functions.
However, the adaptive filter FIR was found to be of good fidelity in both long and
short vowels.
Keywords: Speech recognition, support vector machine, SVM, Window Function
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
First-principles prediction of strain-induced Dirac
semimetal state and negative Poisson’s ratio in TiZrB4
bilayer
Sittichain Pramchu1, a, Phatthranit Srisakonsub2,b, Atchara Punya Jaroenjittichai3,c,
and Yongyut Laosiritaworn3,d*
1Department of General Science, Faculty of Science and Technology, Muban Chombueng
Rajabhat University, Ratchaburi, Thailand, 70150
2Department of Computer Education, Faculty of Science and Technology, Muban
Chombueng Rajabhat University, Ratchaburi, Thailand 70150
3Department of Physics and Materials Science, Faculty of Science, Chiang Mai University,
Chiang Mai, Thailand, 50200
a<[email protected]>, b<[email protected]>, c< [email protected] >,
d<[email protected]>
ABSTRACT
Since graphene which possesses ultra-high carrier mobility due to its Dirac
semimetal state was insightfully characterized in 2004, other members of Dirac
semimetals have been extensively investigated to extend this class of materials for
new emerging application. Among all the experimentally and theoretically
discovered Dirac semimetals, TiB2 and ZrB2 are the promising two-dimensional
(2D) materials as they exhibit Dirac cone and Dirac point at Fermi level, leading to
very high carrier mobility. In this work, ternary 2D materials TiZrB4 has been
proposed as a novel 2D Dirac materials. The material's 2D structure has been
designed by transform the TiB2 and ZrB2 's hexagonal unit cell to orthorhombic
system. Thus, number of atoms in the unit cell is double and allows Ti and Zr atoms
to be placed in the same layer. Using density functional theory calculation as
implemented in Quantum-Espresso package, our designed 2D structure of TiZrB4
was clarified to be dynamically stable. The obtained results indicate that the 2D
TiZrB4 is metallic even though both TiB2 and ZrB2 are semimetals. However, by
applying uniaxial strain of 4% in x-direction (zigzag direction of boron honeycomb),
the 2D TiZrB4 becomes Dirac semimetal. Therefore, a strain-induced metal-to-
semimetal transition has been observed in this materials. In addition, the negative
Poisson’s ratio was found in the wide ranges of strain imposed in y-direction
(armchair direction of boron honeycomb). The 2D structure design method used in
this work might be considered as a strategy of how to obtain a novel Dirac semimetal
with unusual and superior properties, which will be applicable for new emerging
technologies, such as high-energy-density and low-cost alkaline-ion battery.
Keywords: Dirac semimetal, 2D materials, negative Poisson’s ratio, First-
principles.
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Solving vehicle routing problem – the comparison of
Excel Solver and Greedy Algorithm
Chayakarn Bamrungbutr1,a
1Department of Logistics and Supply Chain Management,
School of Business administration, Bangkok University,
Phahonyothin Rd, Khlong Nueng, Khlong Luang District, Pathum Thani 12120, Thailand
a<[email protected]>
ABSTRACT
Business operations are looking for a way to reduce their costs as much as possible.
At the same time, they are trying to satisfy their customer as much as possible as
well. Furthermore, finding the best route for transporting goods and raw materials is
also another quest that business operations are seeking to achieve. Therefore, this
paper aims to study and develop a vehicle routing system for a case where vehicles
travel to destinations without return. This paper will try to determine the best routes
using both the Greedy Algorithm and Excel Solver (Microsoft Excel). Many
scenarios have been created to test the two methods. Namely, goods must be
transported from the starting city to the destination city. Between the two, there are
other cities that the vehicle must pass. The number of passing-by cities are varied
from 2 to 10 cities, and in each case, the connection of the cities and the distance
between them are randomized to create ‘5’ maps. Therefore, there are in total 45
scenarios (9 cases with 5 maps each). The finding shows that the routes provided by
Excel Solver has equal to or shorter distance than the routes provided by Greedy
Algorithm. On the average, the distance of the routes from Excel Solver is shorter
by 5.77%.
Keywords: Excel Solver, Greedy Algorithm, vehicle routing problem
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Effects of sex, age, and occupation of people on their daily
plastic usage in Nakhon Si Thammarat province, southern
Thailand
Uthai Kuhapong1, a, Pichita Changsan2, b, Arisara Jittra2, c, Wasana Chayprateep2, d, Santamon
Tina1,
Pinnai2, e, Sukrittawat Bamrungpanit2, f Fahmida Wazed g
,
1Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University, Nakhon
Si Thammarat 80280, Thailand
2College of Arts and Culture, Nakhon Si Thammarat Rajabhat University, Nakhon Si
Thammarat 80280, Thailand
a<[email protected]>, b<[email protected]>, c<[email protected]>,
d<[email protected]>, e<[email protected]>, f<[email protected]>,
g<[email protected]>
ABSTRACT
Nowadays plastic pollution is becoming a threat for the creatures of the world. In
Nakhon Si Thammarat, the amount of plastic waste is 42687 ton/year and for this
reason it is important to control plastic usage. For doing this, we need to know
peoples’ daily plastic usage. In this study, we prepared questionnaire and asked 300
people about their daily plastic usage (i.e., types and numbers of plastic products).
The people were categorized by their sex (male/female), age (young/old) and
occupation (student/housewife/farmer/Government officer/seller/cleaner/Songtaew
driver). We observed that people used plastic bags, glasses, straws, boxes,
styrofoams, spoons, food-packages, and bottles. However, plastic bags were used the
most (P<0.05). Usage of different types of plastic products was not different between
sexes (P>0.05). On the other hand, young people used more glasses, straws, boxes,
spoons, and food packages than old people (P<0.05). Among people from different
occupations, students and Govt. officers used more glasses, straws, boxes, spoon,
and food packages than other occupational groups (P<0.05). This study shows that
sex does not but the age, and occupation of people affect their daily plastic usage.
Keywords: Daily plastic usage, Nakhon Si Thammarat, Plastic pollution,
Plastic types
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Development of paddy roasting method using a variable
speed electric roaster prototype for production of Khao-
Mao by participation of Khao-Mao community technicians
of Ban Nong Phak Top in Nakhon Phanom Province
Krittaphat Wongma1, a Watsayod Ananpreechakorn1, b Theerawut Samphao2, c
Sunti Phewphong2, d
1Faculty of Education Sakon Nakhon Rajabhat University, Muang District,
Sakon Nakhon 47000, Thailand
2Center of Excellence on Alternative Energy, Research and Development Institute, Sakon
Nakhon Rajabhat University, Muang District, Sakon Nakhon 47000, Thailand
a<[email protected]>, b< [email protected]>, c<[email protected]>,
d<[email protected] >
ABSTRACT
This research aims to 1) design and construct a variable speed electric roaster
prototype for development of paddy roasting method for Khao-Mao production of
Khao-Mao community of Ban Nong Phak Top in Nakhon Phanom province and 2)
study the effectiveness of the variable speed electric roaster prototype. The
participatory action research (PAR) was completed with Khao-Mao community
technicians of Ban Nong Phak Top, Phon Sawan District, Nakhon Phanom Province.
Research procedures comprised data collection of the construction and the
performance testing of the paddy roaster prototype. It was showed that the prototype
reduced the labor time of stirring by 85.7% compared to the labor-based or traditional
roasting and also reduces the roasting time from 56 minutes to 40 minutes for 4
rounds of roasting, resulting in 28.6% faster roasting, could reduce estimated labor
cost 3,300 baht/month/person. The physical properties of roasted paddy and Khao-
Mao obtained from the prototype and traditional method such as moisture, Water
Activity (aw), color and texture, provide corresponding values. After evaluating
acceptance using the 9-point Hedonic scale method, the Khao-Mao community was
more satisfied with color, smell, taste and texture of the Khao-Mao obtained from
traditional roasting. However, the acceptance and satisfaction level of the community
to the prototype was found to be at the highest level. This research result will lead to
the expansion of the credibility towards the Khao Mao community of Ban Nong Phak
Top and neighboring communities, causing the spread of innovation created by
community technicians.
Keywords: Electric Rice Roaster, Participation, Community Technicians
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
The role of public health scholars in the development of
the Thai public health profession
Chorakrit Chamnansri 1,a
1Public Health Academician, Chaiyaphum, 36130, Thailand
a<[email protected] >
ABSTRACT
Public health profession Has developed more concrete profession by the provisions
of the law, which is the Community Public Health Professions Act, BE 2556 in this
way. In fact, there are still some problems that need to be developed in accordance
with the professional role of the profession. Public health context where the focus is
"health promotion and disease prevention" on the standards Professions still have a
problem of role conflicts that overlap with other health professions. And build
acceptance in both health professions To facilitate the work Equilibrium between the
public health professions together (Wasin Phiphatanachat, 2016) Thailand The
public health profession has evolved over the centuries. First established in 1942, in
the early stages there was only work in midwifery and sanitation. And the work
context has been increased With an emphasis on health promotion and disease
prevention objectives Especially during the year 1988, there was an initiative in
primary health, making the mission of public health scholars comprehensive. Health
risk factors both inside and outside the person have increased, such as nutrition,
hygiene education, environmental health. Oral hygiene, mental health, family health
and accidents, etc., and in the latter, additional medical care and rehabilitation
missions of patients in primary care units have been increased. As a result, the public
health profession has more missions, especially in areas where there is a shortage of
doctors and nurses circulating in the area (Wasin Phiphatanachat, 2016). And plays
an important role in the district hospital and health promoting hospital Monitoring
the situation of distribution of health workforce between regions It is an issue of
equality in access to health services. Especially the equality between areas with
different economic conditions, such as between Bangkok and the Northeast. There
is also an issue of distribution of the health workforce between service levels. In
particular, the distribution of doctors between different hospital levels. And issues of
impact on the workload of the health workforce Especially doctors That care for
outpatients and inpatients during different levels of hospital Health workforce
distribution Between regions It consists of 6 personnel: doctors, dentists,
pharmacists, professional nurses, technical nurses and personnel working at the
Tambon Health Promoting Hospital (SSO) (National Health Development Plan No.
12, 2019) from the data on the personnel capacity in public health facilities. In
Chaiyaphum In the primary care unit of 2018, it was found that public health scholars
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/ community health officials who should have 598, but there are only 304 people, of
which 294 are absent, and compared with all primary care personnel, 665 are
considered to be public health scholars / 46% of all health personnel in primary care
units (Chaiyaphum Province Public Health, 2018)
The current public health profession is a profession that emphasizes the
practice of health promotion, prevention and disease control. And among those who
perform duties in the sub-district health promotion hospital There are also additional
missions in the area of primary care, first aid and rehabilitation, where those who
work in the field The public health professions in all institutions must learn the theory
and practice of knowledge. Concepts and practice these skills. To prepare for the
assigned work The graduates of this profession are able to work throughout the
region in the primary care unit. Health Promotion Department in hospitals at the
secondary and tertiary levels. District Health Office Provincial Health Office Or in
central departments in various departments according to graduate fields such as
environmental health Family health, community health, epidemiology, biostatistics,
nutrition, health education, etc. However, the field of occupational health and safety.
There have been previous attempts to differentiate their professionalism from
Professional health (Insights into the health system, 2016)
Roles and responsibilities of public health scholars Which can be categorized
into 5 areas: health system administration Public health research The organization of
public health information system Academic services, academic advising Personnel
potential development Public health scholars work in both hospitals and sub-district
health promoting hospitals. The position of public health scholar is a position that
the Civil Service Commission (OCSC) has set up a framework for community health
centers since 1994, the roles and duties of public health scholars (Feb.) have been
established. It consists of 4 areas, which have roles as follows. 1) The role of
conducting study, research, analysis, research, survey and compile simple basic
academic information. About public health work Summary report on Operations or
public health academic data collection reports submitted to supervisors To support
the planning of the performance of the study, analysis and research of public health.
To be used in operations To suit various situations 2) Planning role Plan for the work
that is responsible for joining in the work plan of the department or project in order
to Operation is in accordance with the target and achievement set. 3) The role of
coordination, coordination and collaboration both within and outside teams or
departments. To achieve cooperation and Achievement as defined Clarify and
provide details of factual information to relevant persons or entities. To create
understanding or cooperation in the work as assigned. 4) Roles of service. Check the
condition of tools and equipment To have quality and It is suitable for use on a
regular basis.
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
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Cluster Analysis to Examine Undergraduates’ Grades
Earned from English Courses of General Education
Intira Charachinda 1, a and Pornsin Supawan 2, b
1Faculty/of Humanities and Social Sciences, Phranakhon Rajabhat University. Thailand
2Faculty of Science and Technology, Phranakhon Rajabhat University. Thailand
a<[email protected]>, b<[email protected]>
ABSTRACT
This study aimed to: 1) cluster students by grades earned from the English courses
of General Education at Phranakhon Rajabhat university, using cluster analysis, and
2) compare the learner characteristics across different achievement levels. The
participants were 400 undergraduates. The research instrument was a self-report
questionnaire. The findings were as follows. 1) Using K-means cluster analysis to
cluster student achievement levels as indicated by grade point averages of the two
English courses, it found three clusters: high achievers, moderate achievers, and low
achievers. The means of the average grades of the high, moderate, and low achievers
were 3.09, 2.22 and 1.32 respectively. 2) Motivation and attitudes, learning
engagement, knowledge construction, and test preparation and test taking behaviours
of the high achievers were significantly higher than the other two clusters. However,
motivation and attitudes, learning engagement, knowledge construction, and test
preparation and test taking behaviours of the moderate achievers were not
significantly different from those of the low ones. Remarkably, significance
differences in classroom participation of all the three clusters were not found.
Keywords: Cluster Analysis, Learner Characteristics, English Language
Achievement, Second Language Acquisition
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Calculate the velocity of a motorcycle while driving with
animations from a mobile phone video file
Wutthikorn Malikong1,a, Vachira Chaychumdee2, Pannaporn Hirannawakun2,
Narong Sangwaranatee2, b, Nisakorn Sangwaranatee3,c and
Nuttapong Wattanasiripong 4,d
1Forensic Science, Faculty of Science and Technology,
Suan Sunandha Rajabhat University
2Applied Physics, Faculty of Science and Technology,
Suan Sunandha Rajabhat University
3 Informatics Mathematics, Faculty of Science and Technology,
Suan Sunandha Rajabhat University
4Applied Mathematics, Faculty of Science and Technology,
Valaya Alongkorn Rajabhat University
a<[email protected]>, b<[email protected]>, c<[email protected]>,
d<[email protected]>
ABSTRACT
Calculate the velocity of a motorcycle while driving with animations from a mobile
phone video file. Test for motorcycle velocities of 40, 60, and 80 km/h. Record
movies with video from a mobile phone 2 positions: high angle and perpendicular
angle of movement. Convert video files into image files and count the number of
frames on all 3 levels. It was found that the image from the high-angle camera on the
floating bridge can find frame rate values equal to 36, 23, and 17, and the permanent
angle camera with frame rate movements of 25, 15 and 11. Calculate road distance
speed and compare it to Google Earth distance. Experiments showed that because of
the high-angle camera tolerances from the floating bridge, there were fewer
tolerances than cameras present to movement. the location of the camera mounting
distance affects the calculation of the speed of the motorcycle.
Keywords: frame rate, motorcycle, velocity
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Using online lessons through Facebook during the
COVID-19 pandemic, Basic Robotics for students in
Electrical power, 3rd year vocational certificate,
Faculty of Industrial Technology,
Nakhon Phanom University
Kowit Yodmongkol1, a and Nawee Udorn 2, b
1 Department of Electrical Technology, Faculty of Industrial Technology,
Nakhon Phanom University , Nakhon Phanom, Thailand
2 Department of Electronics Technology, Faculty of Industrial Technology,
Nakhon Phanom University , Nakhon Phanom, Thailand
a <[email protected]> , b <[email protected]>
ABSTRACT
This research aims to 1) develop the online lessons through Facebook of basic
robotics subjects for 3rd vocational certificate students in electrical power to be
effective according to 80/80 criteria. 2) compare the academic achievement of basic
robotics subjects for 3rd year vocational certificate students, before and after
learning by the online lessons through Facebook. 3) study students' satisfaction with
online lessons through Facebook. The sample groups for this research were 21 of 3rd
year vocational certificate students in electrical power from Faculty of Industrial
Technology, Nakhon Phanom University. The research instruments were the online
lessons through Facebook of basic robotics subjects, achievement test and studing
students' satisfaction with the online lessons through Facebook. The data were
analyzed by using mean , standard deviation and t-test
The results were as follows: 1) Efficiency of the developed online lessons through
Facebook of basic robotics subjects for 3rd year vocational certificated students in
electrical power is 80.95 /87.65, higher than the expected criterion 80/80.
2) the students’ achievement test after learning with the online lessons through
Facebook of basic robotics subjects was statistically higher than before learning at
the significance level of .05 3) The level of student satisfaction on online lessons
through the Facebook of basic robotics subjects was at the highest level.
Keywords: online lessons, Facebook, Basic Robotics subjects
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11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
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An Evaluation of the Educational Program in Retail
Business Management under the Work Intergated
Learning (WIL) Concept in Muban Chombueng
Rajabhat University
Chutirat Charoensuk1, a and Atchareeya Chotklang2, b Nuttawadee Sawangngam,3, c
Jenkanit Sugsamrit,4, d Parichat Wimunchat,5, e Akom Charoensuk6, f
1-5Faculty of Management Science/Marketing Program, Muban Chombueng Rajabhat
University, 46 moo 3, Chom Bueng Subdistrict, Chom Bueng District, Ratchaburi,
Thailand
6Faculty of Humanities and Socila Science/Community Developement Program, Muban
Chombueng Rajabhat University, 46 moo 3, Chom Bueng Subdistrict, Chom Bueng
District, Ratchaburi, Thailand
a<[email protected]>, b<[email protected]>,
c<[email protected]>, d<[email protected]>, e<[email protected]>,
f<[email protected]>
ABSTRACT
This evaluation research evaluated education program in Retail Business Management,
which established under Work Integrated Learning concept and under the collaboration
between Muban Chombueng Rajabhat University (MCRU) and CP All Public Company
Limited (CP All PCL). Specifically, objectives of the study were: 1) to examine policy,
objectives, goals, and mechanisms set up to implement the program; 2) to find out how
implementation of the program was done, including its problems and difficulties; 3) to
investigate if the stated objectives and goals have been achieved so far; 4) to provide
recommendations useful to fine-tune the program to make it more efficient. Combination of
document analysis, interview and focus group of program implementers and stakeholders
were used to collect and assemble the data.
Evaluation results revealed the followings.
1) The education program has been established since 2006 under the collaboration between
MCRU and CP All PCL to carry out graduate employability policy by involving
employment sector to collaborate with educational institute in managing education program.
The main objective was to offer the 4-years Business Administration Bachelor Degree
Program in Marketing to produce graduates in retail business management that their
qualifications can not only conform to the Thai Qualifications Framework for Higher
Education (TQF: HEd) but can also meet expectations of modern retailing business
employers. The goal was students could be employed once graduated. To accomplish the
objective and goal, Work Integrated Learning (WIL) concept was adopted, designed, and
implemented by cross mechanisms structure from MCRU and Public Affair Coordination
Office, Department of Human Resource Management, CP All PCL. Implementation of the
program can be seen as an integration of 2 vital parts of the WIL concept, work and learning.
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Formally planned and clarified in the form of curriculum, an academic year consisted of two
– six months semesters. Each semester students enrolled had to register to attend classroom
teaching at MCRU for three months and had gone to work at CP All CPL for three months.
Under supervision of CP All CPL while working, students also received work site visits and
supervision from MCRU supervisors. Completion of this 4 years - bachelor degree required
students to accomplish the work – learning structure without having long semester break.
2) Since academic year 2005, there were 125 students enrolled into the program, within
which 30 were graduated, 31 were dropped out and the rest are still studying. Problems or
difficulties were found in input, process and output aspects of the program. Problem of input
was amount of students enrolled into the program in each semester was lower than target
and the problem was bigger with a crucial amount of them were dropped out during studying.
Problem of process was mainly on coordination for working together among related parties.
Problem in the aspect of output was qualification of graduates could not meet all competency
indicators required by employers.
3) Considering an achievement of the program, the study found that number of students
enrolled to study under the program was lower than target goal in every academic year. For
those enrolled, however, they could earn wage money of 9 , 4 0 0 – 11,000 Baht per month
during work period, the amount of money they could not earn if enrolled into ordinary
curriculums. On the aspect of graduate qualifications, graduates got highest level score of 5
from assessment conducted by authority for the TQF: HEd and got a medium level in
working capacity from assessment conducted by working supervisors. However, when
consider an employment goal, all 30 graduated students (100 %), although 3 of them
graduated later than the groups, could be recruited into CP All Public Company Limited. In
the aspect of human resource development, staff of both parties and students have been
subjected to attend or participate in training programs, meetings or seminar sessions, and
contest activities at least 3 times each semester.
4) Recommendations to fine-tune the program are as follows. 1) Specific strategies to be
able to outreach student target groups, high school guidance staff, parents and community
leaders to introduce the program must be initiated in addition to what have been done under
university guidance program. 2) Both parties examine to build more help and support
channels for students to decrease the dropping out rate. Developing positive attitude toward
the WIL should also be partly done in classroom teaching. 3) Both parties must create more
channels to facilitate working relationship and communication. 4) Student competency
evaluation procedure must be improved to cover real working circumstances and once any
discrepancy of student competency from employer expectations does exist, the issue must
be informed for finding immediate and correct solutions.
Keywords: Retail Business Management, Work Integrated Learning
121
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Fostering Pre-service Teachers Undertaking the Bachelor
of Education in General Science to Anticipate Student
Difficulties in Scientific Data Analysis
Aungtinee Kittiravechote1,a and Thanida Sujarittham1
1Program of General Science, Faculty of Education, Bansomdejchaopraya Rajabhat
University, Bangkok, 10600, Thailand
a< [email protected] >
ABSTRACT
This study aimed to develop a task designed to help pre-service teachers prepare themselves
to anticipate student difficulties in the analysis of scientific data. We have conducted the
study through a methodology for investigating pre-service teachers performance on both
pedagogical content knowledge—knowledge of student ideas and physics content
knowledge—analysis of experimental results from arithmetic mean or graph plotting in a
specific topic of gravity. The experimental group consisted of 33 pre-service teachers
enrolled in program of general science, faculty of education, Bansomdejchaopraya Rajabhat
University. The instrument used in this study was a worksheet for an experiment to
determine the magnitude of the Earth's gravitational acceleration in Bangkok. The results
presented that our work provides pre-service teachers with help to anticipate student
response; in particular, seeking of answers in a variety of ways contributes a better
understanding of where the student's answers come from. We highlighted the advantage of
this work that encountering alternative ways of thinking and understanding of students might
affect the views and roles of pre-service teachers on students in the classroom.
Keywords: Anticipation, Student difficulty, Scientific data analysis, Pre-service teachers,
Earth's gravitational acceleration
122
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Strengthening of Finding the Self-esteem and the
Teachers’ Spirituality of English Pre-service Teachers
through the School Integrated Learning
Issariyapond Woragittanont 1, a
1Faculty of Education, Sakon Nakhon Rajabhat University, 47000, Thailand
a<[email protected]>
ABSTRACT
The objectives of this research were: (1) to explore the self-esteem of learning in the
Bachelor of Education Program in English and (2) to strengthen teachers’ spirituality
of English pre-service teachers. The research uses mixed methods of both
quantitative and qualitative approaches. The subject of this research includes 60
students from 145 students who enrolled in the Bachelor of Education Program in
English during the academic years of 2019 by using systematic sampling.
Questionnaire and semi-structured interviews were adopted as research instruments.
The Cronbach’s alpha reliability coefficient of the questionnaire is .93. The research
data were analyzed via descriptive statistics (including percentage, frequency, mean,
and standard deviation) and content analysis. The research findings were as follows.
(1) The majority of the participants (96%) discovered their self-esteem to continually
study in the Bachelor of Education Program in English and to pursue to work as a
teacher in the future. They also said that the pre-practicum activities provide the
exposure with real school environment, reflect in performing as a teacher since the
first year of study, and give the experiences to adapt with the course of study. (2)
The English pre-service teachers strongly agreed that the pre-practicum activity
helps to strengthen teachers’ spirituality of themselves. The self-assessment was
determined overall at the highest level (M = 4.50, SD = 0.64).
Keywords: teachers’ spirituality, self-esteem, pre-service teachers, pre-practicum
activity, school integrated learning
123
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Foot Massages Stick Products for Health from local wood
Asso.Prof. Sataporn Dee.NA-Chumphae1,a, Chalermchai Puripat2,b,
Pathom Suthirote3 and Weeraphat Krittathanathip4
1,2,3,4Faculty of Architecture, Kasem Bundit University 1761 Pattanakarn Rd., Suanluang
Bangkok 10250 Thailand
a< [email protected] >, b< [email protected] >
ABSTRACT
The social and economic conditions have high competing of time as pointing that
will allow people to use massage services. Relaxing by yourself or alleviating aches
are shown to pains in various parts of the body from work, improvised that the
researcher has the idea to develop a foot massages stick to create product of foot
massages stick for health. It will be saved time and the foot massages stick is more
convenient for those who do not have time to go to massage in each massage service.
but main idea building of product also is different in its comparable massage
properties. This collection has three properties in one together as foot reflex relax,
the soles of the feet stretch and the calf line. The new innovation of foot massage
stick products is built encourage to more convenient for users to use by themselves.
The essentials of a novelty product package are not yet available in the market. By
producing the foot massage stick for health is used as a model in the community and
villages that has a stick and supported have some metal to strength then the product
model, it is also an innovative product, foot massage stick for People who like to
massage the feet. We can be easily stored in your office and private rooms in your
home and save space for storing the foot massages stick product.
.
Keywords: Foot Massages Stick Products, Comparable Massage Properties,
Innovation of Foot Massage Stick Products
124
11th International Science, Social Science, Engineering and Energy Conference I-SEEC 2021
June 24th- 25th, 2021, Fully Online Conference iseec2021.net
Factors Relating to Role and Function of Public Health
Scholars Chaiyaphum Province
Chorakritnabordintr ChamnanSri1,a
1Chatturat Health Office Chaiyaphum Thailand
a<[email protected]>
ABSTRACT
This descriptive research The objective of this study was to study factors that relate
to the roles and functions of public health scholars working In Tambon Health
Promoting Hospital Community hospital And the District Public Health Office in
Chaiyaphum Province, all samples were personnel who performed work In the said
service of 244 people, the sample size Using the formula of Yamane (152 people),
Accidental Sample selection was done by distributing questionnaires at various
agencies directly and sending questionnaires by mail. According to the service sites,
174 complete questionnaires were received in the research toolkit. Use the generated
query This study was conducted by studying 1 set of related documents, concepts,
theories and research results, divided into 3 parts, namely, part 1, personal
information, and part 2, a questionnaire of organizational support in the performance
of roles and responsibilities of public health scholars. Part 3: Questionnaire on the
roles and duties of public health scholars in practice The data were analyzed using
descriptive statistics such as percentage, mean, standard deviation. And inferred
statistics This was Pearson Product Moment Correlation. Roles and duties of the
most practicing public health scholars This was the prevention and control of disease
(x 3.70, SD 0.69) and the least was medical treatment (x 3.33 SD 0.86) because most
of the sample were public health scholars working at the district health promotion
hospital, 92% and 72.4% of academics, as the role of public health scholars had a
negative correlation with work experience. Therefore, it should create incentives for
academics to do more academic work. By increasing remuneration according to
academic performance Or more research work as well It should support qualitative
research studies in the workplace and the needs of public health scholars. And other
multidisciplinary personnel in order to know the true roles and responsibilities that
should be performed Nowadays, public health work is a job that covers all jobs in
the community with an integrated and increasing compensation for positions. And
other incentives as appropriate, increasing the certification of public health scholars
in the community. With professional standards for public health scholars and to
promote additional professional values To motivate public health scholars to
continue working with quality and standards
125
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