bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison of Sleep Quality in Active and Inactive Students During the COVID-19 Pandemic in Iran
Authors: Sadeghipour Hamid Reza , Zar Abdosaleh , Hofmeister Martin
Published: November 2023

Background: Sleep quality is one of the factors affecting the health and performance of students. The current study aimed to compare sleep quality between active and inactive students during the COVID-19 pandemic in Iran. Methods: In a cross-sectional study, 386 students (182 females; 144 males) studying in the Persian Gulf University voluntarily participated for 2 months in 2020. We used the Petersburg Sleep Questionnaire (electronically through university emails) to collect data. Results: Female students scored lower than male students in sleep duration (P = 0.002). Physically active students scored lower than physically inactive students in sleep quality (P = 0.003), sleep disturbances (P = 0.015), and daytime dysfunction (P = 0.005). Physically active female students obtained significantly lower scores in sleep quality (P = 0.002) and daytime dysfunction (P = 0.003) than physically inactive female students. Also, physically active male students obtained significantly lower scores than inactive male students on the subscales of sleep disturbances (P = 0.005) and the use of sleeping medication (P = 0.021). Conclusions: Physical activity can play an important role in improving the sleep quality of students, and it should be emphasized during the restrictions imposed by epidemics.
OPERATED ROOFING: PERSPECTIVES OF USE
Authors: Кодоева Ванда Состиковна , Тибилова Ада Георгиевна , Котолова Светлана Роландовна
Published: November 2023

В статье рассматривается эксплуатируемая кровля - важная перспективная составляющая развития городов, создающая комфорт и улучшающая историческую архитектуру. С развитием инновационных технологий в области создания качественных строительных материалов расширяются возможности проектирования и эксплуатации надежных, долговечных, экологичных, энергоэффективных зон работы и отдыха людей.

The article deals with the exploitable roof - an important promising component of urban development, creating comfort and improving historical architecture. With the development of innovative technologies in the field of creating quality building materials, the possibilities of designing and operating reliable, durable, environmentally friendly, energy-efficient areas for people's work and recreation are expanding.
ВЫДЕЛЕНИЕ КАРБОНАТНЫХ КОЛЛЕКТОРОВ И ОЦЕНКА ИХ ЕМКОСТНЫХ СВОЙСТВ ПО АКУСТИЧЕСКОМУ И НЕЙРОННО-ГАММА КАРОТАЖАМ
Authors: Пирниязов Байраммырат Какабаевич
Published: November 2023

В статье обобщены результаты опытно-методических работ, проводимых в течение ряда лет геофизических исследований, изложены способы определения пористости по акустическому, нейронно-гамма каротажу; экстремальных значений гамма - и нейтронного гамма-каротажа, а также способы выделения и оценки коллекторов сложного строения. Приведенные приемы и методы интерпретации предназначены для изучения карбонатных отложений юры и мела месторождений Туркменистана и рекомендуются для опробования во всех геофизических организациях, ведущих исследования сложных карбонатных коллекторов.Поисково-разведочные работы на нефть и газ в Туркменистане связаны главным образом с мезозойскими отложениями, залегающими на глубинах до 5000м к более, представленными как терригенными, так и карбонатными породами. Отложения эти вскрываются в сложных геолого-технических условиях; коллектора преимущественно сложного строения, что затрудняет выделение их из-за слабой изученности геофизических зависимостей и петрофизической обеспеченности геофизических зависимостей.
Linear listing order and hierarchical classification: history, conflict, and use
Authors: Minelli Alessandro
Published: November 2023

Taxonomic criteria alone are not sufficient to determine a linear sequence for the arrangement of collection specimens according to a preferred classification or the linear sequence according to which taxa are best discussed in articles or books. The choice of methodology to obtain a linear sequence of taxa in agreement with a hierarchical classification has been little studied and remains controversial. In this article, I offer an historical background, before examining properties, use and limits of possible listing criteria. The result of a linearization effort depends on arbitrary choices with respect to two aspects of the hierarchical classification we intend to linearize. One is the order to be followed in listing the immediately subordinate members of a given taxon, the other is the choice of the sets of taxa to be linearized according to tradition, alphabetic order or other criterion. The example presented here, related to the “orders” of Hexapoda, demonstrates the need to specify very clearly the extent and composition of the uncollapsed classification backbone retained in the linearization procedure.
Fayda ve Kullanım Kolaylığı Algısı ile Eğlence ve Gerçeklik Algısı Arasındaki İlişkinin İncelenmesi
Authors: ERYILMAZ Gamze , AYDIN Rümeysa
Published: November 2023

Araştırmanın temel amacı gerçeklik teknolojisi uygulamalarını deneyimleyen ziyaretçilerin görüşlerini alarak, fayda ve kullanım kolaylığı algısı ile eğlence ve gerçeklik algısı arasındaki ilişkiyi tespit etmektir. Bu bağlamda ilgili ilişkiden hareketle, fayda ve kullanım kolaylığı algısının eğlence ve gerçeklik algısı üzerindeki etkisi incelenmek istenmektedir. Amaca ulaşabilmek için araştırmanın kapsamını, gerçeklik teknolojisini deneyimlemiş olan kullanıcıların, kullandıkları uygulamaya ait olan kullanma kolaylığı algıları, fayda algıları, gerçeklik algıları ve eğlence algıları oluşturmaktadır. Bu değişkenler arasındaki ilişkiler, gerçeklik teknolojisi uygulamalarını deneyimlemiş olan bireyler çerçevesinde incelenmiştir. İskenderun Teknik Üniversitesi etik kurulu kararı onayından geçen yapılandırılmış veri toplama formuyla (anket) veriler toplanmıştır. Olasılığa dayalı olmayan örnekleme yöntemlerinden kolayda örnekleme tekniği ile çevrimiçi ortamda gerçekleştirilen uygulama 21 Kasım 2020 ve 29 Mayıs 2021 tarihleri arasında gerçekleştirilmiştir. Veriler, Sakıp Sabancı Müzesi ziyaretçilerinden mail yoluyla toplanmıştır. Araştırmanın örneklemini İstanbul Sakıp Sabancı Müzesi sınırı içerisinde gerçeklik teknolojisi ile üretilen uygulamaları en az bir kez deneyimlemiş kullanıcılar oluşturmaktadır. Araştırma neticesinde 190 kişiden veri toplanmıştır. Araştırma sonucunda elde edilen bulgulara bakıldığında da, gerçeklik ve eğlence algısını en çok açıklayan değişkenin fayda algısı olduğu belirlenmiştir.
Fluorescence sensors based on imidazolium for biogenic amines
Authors:   , Kongwutthivech Jaturong
Published: November 2023

The aim of this work is to design the system for histidine (HD) and histamine (HM) discriminated detection by using the fluorescence sensors including Histamine Blue (HB), imidazole compound (AN) and imidazolium compound (ANI). Firstly, the synthesis of sensors HB, AN and ANI have been achieved. Our first concept was that the combination of sensors HB and ANI discriminated HD and HM by using FRET process. Unfortunately, sensor ANI consisting of a naphthalimide moiety cannot discriminate HD and HM due to a competitive fluorophore against sensor HB.  For the second concept, the binding affinity of Cu2+ ion towards the HBHD and HBHM complexes could discriminate the HD and HM detection by using fluorescence technique. The Cu2+ ion bound selectively with HBHD complex and the fluorescent response of HBHD was quenched in the presence of excess Cu2+ ion. Therefore, we successfully discriminated HD and HM by using the combination of sensor HB and Cu2+ ion. Surprisingly, we enabled to apply the fluorescence responses under different guests to construct the logic gates system.  Moreover, we have also studied the selectivity of sensors AN and ANI. The results showed that the fluorescence spectra of sensor AN was deeply quenched in the presence of Cu2+ ion.  The complex of sensor AN and Cu2+ ion had the log K value for binding affinity of 5.130 with the stoichiometry 1:1.  In case of sensor ANI, the fluorescence quenching of sensor ANI was observed in the presence of F- ion. As the binding studies, the log K value of the complex was 3.05 with the binding mode of 1:1.  Limit of detection and limit of quantification of F- determination were 0.18 mM and 0.60 mM, respectively.  Finally, sensor ANI gave a promising selectivity for F- determination by colorimetric and fluorimetric naked-eye detection.
Popping mechanism of popped rice
Authors:   , Konharn Lalita
Published: November 2023

This thesis presents the popping mechanism and the influence of temperature on the  pore structure of popped rice. We compared the popping process of popped rice with popped corn. When a rice grain/corn kernel was heated by hot air, they exploded into popped products with an emitted characteristic “pop” sound. The thermally stable rice husk with an air-tight interlocking of lemma and palea made rice grain popped at a higher temperature as compared to that of popped corn. The higher popping temperature generated superheated water of higher pressure and greater mass of water involved in the popping process. The high pressure of superheated steam ruptured the rice husk. At this moment, the superheated steam exploded the microscopic starch granules into inter-connected starch balloons with micrometer-thin starch walls. SEM images confirmed larger pore sizes at greater popping temperature. The popped rice expanded about 21 times the grain volume while the popped corn expanded about 13 times the volume of kernel. During the popping process, the transformation of rice and corn did not undergo chemical changes as they only transformed their structures. Due to the higher popping temperature and the greater mass of water involved in the popping process, the popped rice jumped higher into the air with an instantaneous separation of popped rice and its husk.
Development of oxalate sensor using paper-based analytical device
Authors:   , Janrod Manassawee
Published: November 2023

Herein, oxalate sensors were developed using paper-based analytical devices (PADs) coupled with electrochemical and colorimetric detection. For electrochemical paper-based analytical device (ePAD), the amount of oxalate in the solution was determined through the measurement of hydrogen peroxide (H2O2) produced from the enzymatic reaction between oxalate and oxalate oxidase (OxOx) obtained from an oxalate test kit. A carbon paste electrode (CPE) as a working electrode (WE) was modified with silver nanoparticles (AgNPs) and multi-walled carbon nanotubes (MWCNTs) to enhance electrochemical signal of H2O2. A CPE was composed of 50% w/w oil phase (mineral oil and PDMS) and 50% w/w graphite powder. The CPE was modified with 400 µL of 10,000 ppm AgNPs and 1% w/w MWCNTs. The AgNPs-MWCNTs-CPE was used to measure H2O2 using amperometric detection with an applied potential of -0.6 V. The linear ranges of the method for determination of H2O2 were in the ranges of 0.05-10 and 10-1,000 mM. From the first linear range, limit of detection (LOD) and limit of quantitation (LOQ) were found to be 0.02 and 0.08 mM, respectively. For detection of oxalate using the AgNPs-MWCNTs-CPE, oxalate solution was reacted with OxOx in a reagent B consisting of OxOx and horseradish peroxidase (HRP). However, electrochemical signal was not observed, which could be because the produced H2O2 was reacted with HRP from the reagent B. Therefore, the electrochemical determination of oxalate using ePADs was not successful.

In addition, a PAD was developed with colorimetric detection as an oxalate sensor using the same enzymatic reaction. The produced H2O2 was reacted with 3-(Dimethylamino) benzoic acid (DMAB) and 3-Methyl-2-benzothiazolinine (MBTH) to produce an indamine dye which is a blue color. The color intensity corresponded to the amount of oxalate in the solution. Interfering effect of AA contained in urine was minimized by adding a masking reagent (CuSO4, H3BO3 and NaOH) to react with AA for 30 min. The optimized amounts of OxOx, HRP, DMAB and MBTH were 3 x 10-3 u L-1, 1 x 10-4 u L-1, 2.4 mM and 0.0176 mM, respectively, which were used to react with oxalate for 10 min before measuring color intensity. The linearity of the method was in the range of 5-50 ppm. LOD and LOQ were found to be 3.38 and 11.27 ppm, respectively. The developed oxalate sensor based on PADs with colorimetric detection was successful to determine oxalate in urine with high accuracy and precision, in which %recovery of spiked oxalate in urine was found in the range of 80.7-110.0% and %RSD values of the amounts of oxalate from intra and inter-day measurements were lower than 5%. Therefore, the developed oxalate sensor based on PADs will hold a great promise to be a simple, low-sample and reagent volume, reliable and portable tool for determination of oxalate, especially for on-site measurements.
Quantum dots and fluorescence compounds for biogenic amine sensing
Authors:   , Tepakidareekul Manunya
Published: November 2023

The simple approach for biogenic amine sensing electron transfer (ET) process and ligand exchange mechanism has been constructed by using fluorophore-micellar probe. In this work, coumarin derivative (CouS1) and carbon nanoparticles namely branch-polyethyleneimine modified carbon dots (N-CDs) were synthesized and used as fluorophore for constructing the probe. In the presence of SDS, the fluorescence intensity of these fluorophores was enhanced leading to a high sensitivity in sensing application. Upon the addition of various metal ions into the both solutions of CouS1 and N-CDs in the presence of SDS, Co2+ ion exhibited the highest fluorescence quenching in the both solution due to ET process. As a result, the CouS1/SDS/Co2+ and N-CDs/SDS/Co2+ probe were constructed for discrimination of biogenic amine. In the case of CouS1/SDS/Co2+ probe, the fluorescence recovery of CouS1/SDS was observed upon the addition of histidine because of removal of Co2+ ion from the probe by histidine. On the contrary, a high fluorescence quenching of CouS1/SDS/Co2+ was observed due to co-bonding of histamine with Co2+ ion. Moreover, CouS1/SDS/Co2+ enables to give a benefit discrimination of imidazole based biogenic amine by naked-eye approach. In the case of N-CDs/SDS/Co2+ probe, the fluorescence recovery of N-CDs/SDS was observed in particular of presented histidine. The detection limits of CouS1/SDS/Co2+ and N-CDs/SDS/Co2+ over histidine were 45 µM and 74 µM, respectively. This suggests that these probes can be applied for analytical detection of histidenemia both normal and histidenemia patients. Additionally, molecular logic gate was developed form these different sensing spectrum upon the different stimuli of Co2+ ion, histidine and histamine.
SYNTHESIS OF FERROCENE DERIVATIVES CONTAINING VARIOUS RECEPTORS AS CYANIDE ION SENSORS
Authors:   , Wisedsoonthorn Orrawan
Published: November 2023

The goal of this research is to design and synthesize molecular sensor for cyanide anion. The signalling unit and receptor unit were connected through aryl ethyne moiety by using Sonogashira-cross coupling. The unsymmetrically ferrocene derivatives containing boronic acid and 2, 2-dipicolylamine (DPA) as receptor unit, L1 and L2, were obtained in moderate yields, 45% and 67%, respectively. Cyclic voltammetry of L1 in 0.1 M TBAPF6 in CH3CN exhibited high selectivity toward cyanide ions in the presence of various anions. In addition, the binding of cyanide at the boron center of L1 was supported by 1H NMR titrations of L1 and cyanide ions in CD3OD. The cyclic voltammetry studies of L2 with various metal ions in 0.1 M TBAPF6 in CH3CN exhibited high selectivity toward Cu2+ ion. The cyclic voltammogram of L2-Cu2+ showed the shift of the redox potential of ferrocene and a reversible redox wave of CuII/CuI. The blue-shift of absorption spectrum from 310 to 260 nm in UV-Vis spectrum of L2 upon addition of Cu2+ supported the result from cyclic voltammetry. In the presence of CN-, H2PO4- and F-, the UV-Vis spectrum of L2-Cu2+ exhibited a red shift of the absorption band from 260 to 310 nm. Using cyclic voltammetry, the addition of CN- or F- to the solution of L2-Cu2+ complex in 0.1 M TBAPF6 in CH3CN did not show any potential shift of the Fc/Fc+ redox couple. In addition, the reversible wave of CuII/CuI redox couple disappeared, indicating that CN- and F- interacted at the copper (II) center of L2-Cu2+ complex. Addition of H2PO4- to the solution of L2-Cu2+ complex resulted in the precipitation. Therefore, L2-Cu2+ complex cannot be used for detection of H2PO4- by cyclic voltammetry.
Preparation of rigid polyurethane foams catalyzed by copper-amine complexes prepared in water
Authors:   , Noiasa Phornsawan
Published: November 2023

In this research, the catalysts for preparation of rigid polyurethane (RPUR) foams were developed in order to reduce odor as compared with dimethylcyclohexylamine (DMCHA), which has strong odor. These synthesized catalysts were copper-amine complexes, namely Cu(OAc)2(amine)2 and Cu(OAc)2(amine), where amine = ethylenediamine (en), triethylenetetramine (trien), tetraethylenepentamine (tetraen) and pantaethylenehexamine (pentane). The synthesis of copper-amine complexes was done using green chemistry approach, which used water as a solvent. The aqueous solutions of copper-amine complexes in water were obtained. These aqueous solutions could be further used in the preparation of RPUR forms without purification. Characterization of copper-amine complexes was done by using UV-visible spectroscopy, Fourier transform infrared spectroscopy and mass spectrometry. The catalytic activity was studied by investigation of the reaction times. Physical and mechanical properties of RPUR foams were studied. The data were compared with those obtained from DMCHA. The experimental results showed that the aqueous solutions of all copper-amine complexes could be easily dissolved in the starting materials of RPUR foam formulation. Cu(OAc)2(en)2 and Cu(OAc)2(trien) had high catalytic activity. Cu(OAc)2(en)2 and Cu(OAc)2(trien) gave the RPUR foams having appropiate density, good physical and mechanical properties. Therefore, Cu(OAc)2(en)2 and Cu(OAc)2(trien) were suitable catalysts for preparation of RPUR foams.
Fabrication of particles from tea polyphenol extract for anticancer activity
Authors:   , Pukfukdee Puttikorn
Published: November 2023

Tea polyphenols, compounds expressed in various tea (Camellia sinensis) leaves, possess powerful antioxidant and anti-camcer activities. Nevertheless, more cytotoxicity to cancer cells with safety to normal cells of the tea polyphenols is needed for greater potential in cancer treatment. In this work, we have synthesized the oolong tea polymerized polyphenol (P-OTE) particles from the oolong tea polyphenol extract (OTE). The obtained particles are water dispersible and can entrap hydrophobic drugs such as paclitaxel (PTX) and xanthone. The P-OTE particles are spherical with size of 250±5 nm. PTX and xanthone can be loaded onto the particles at approximately 30% and 27% (w/w) loading content, respectively. The PTX-loaded P-OTE particles disperse well in water. The PTX-loaded P-OTE particles show excellently improved anticancer activity against lung cancer (A549) cell line as compared to the unencapsulated PTX, i.e., the IC50 value of < 0.02 μg/l for the entrapped PTX as compared with the IC50 value of 0.18 μg/l for the unentrapped PTX in DMSO.
Molecular modeling on 3C protease/inhibitor complexes involving hand foot mouth disease
Authors:   , Jetsadawisut Warin
Published: November 2023

Hand, foot and mouth disease (HFMD) outbreaks frequently occur with children during the rainy season even becoming epidemic in some case. In general, HFMD patients have mild symptoms, that clear quickly. The enterovirus A71 (EV-A71) is a variant of the virus that causes severe pathogenic HFMD and may lead to death. In 2012, over 100000 HFMD cases were reported in Vietnam with 166 deaths due to EV-71 infection. HFMD occurrs in many countries e.g. Malaysia, China, Singapore, Vietnam, Brunei, Cambodia, and Great Britain. No vaccine or drug against HFMD is available. Rupintrivir, a broad-spectrum inhibitor, is a drug candidate for HFMD treatment, Another candidate is SG85, which is reported to have a better binding affinity than rupintrivir against CV-A16. Both inhibitors exhibit a comparable affinity against EV-A71 3C protease (3Cpro). In this work, the molecular information in term of the binding of the two inhibitors to the proteases will be elucidated. We aimed to investigate the inhibitory mechanisms of some potent compounds (e.g. rupintrivir) against the 3Cpro of the virus CV-A16, EV-A71 and EV-D68 in order to understand their biological activity and to develop procedures to improve their inhibitory potency. Molecular Docking and Molecular Dynamics simulation (MD simulation) are used as computational tools. The second part of this study is search for other potent HFMD inhibitors this was performed by screening several compound libraries (ZINC database, DrugBank and ChemBL) against the CV-A16 and EV-A71 3C proteases using steered molecular dynamic (SMD) simulations. Based on the hypothesis that a higher force is needed for pulling a more effective ligand from the protein target, the two analogs of rupintrivir containing the hydroxyl methyl at -meta and -para positions of the P2 side chain required an averaged rupture force higher than rupintrivir and SG85. The obtained information could be useful for the further development of anti-HFMD drugs.
Structured svm backpropagation to convolutional neural network applying to human pose estimation
Authors:   , Witoonchart Peerajak
Published: November 2023

In this work, we show, for the first time, how to formulate Structured SVM as two layers of Convolutional Neural Network, the top layer of which is loss augmented inference layer, and the bottom is normal convolutional layer. We show that Deformable Part Model can be learned with newly created Structured SVM neural network by propagating the error of Deformable Part Model back propagate to Convolutional Neural Network. The forward propagation calculates loss augmented inference. The back propagation calculates the gradient from the loss augmented inference layer to convolutional layer. By doing so, we create a new type of convolutional neural network: Structured SVM Convolutional Neural Network, which is then applied to Human Pose Estimation problem. This new creation is a neural network, which can be used as the last layers of deep learning. Our method jointly learns structural model parameters and appearance model parameters. Our back propaga- tion formulation can also be applied to Multiclass Classification Structured SVM where our result outperformed widely used Softmax classifier on standard MNIST dataset. We imple- ment our method as a new layer of existing Caffe library.
Locating buildings in urban area from geometrical information
Authors:   , Tanchotsrinon Chaiyasit
Published: November 2023

An identification of geographic objects such as buildings from images is a challenging task in image processing, since it can be applied to various applications, e.g. city planning and disaster management. Consequently, an automatic building detection based on line scanning is proposed in this dissertation. For top view image, all possible candidate areas are initially identified on the tested image. To avoid redundant time consuming, the image is chopped into sub-images according to the candidate areas. An appropriate size of the sub-images is approximately estimated by a histogram of candidate area sizes. Then, degrees of angles relevant to the candidate areas are investigated by Hough transform. All significant lines related to the sub-images are subsequently extracted to be used as initial lines. Finally, the rectangle shaped objects are detected by the proposed line scanning algorithm. The experimental results shows that the proposed algorithm can acquire higher performance than Karsli’s method, and can achieve at least 90% of accuracy for object based building detection. For perspective view, the proposed algorithm shows that it can be consistently applied to building detection on the tested image, since it can extract lines that are building components.
Development of loose face powder containing water-entrapped silica particles
Authors:   , Boonyasittikul Atsamaporn
Published: November 2023

The objective of this study was to develop loose face powder containing water-entrapped silica particles. Water-entrapped silica particle was fabricated via simple mixing process operated with high shearing and pouring water all at once. The obtained product was core shell like structure and self-assembly form. The inner core was water droplet while the shell was the loose networking of hydrophobic silica (Aerosil® R812S). The weight ratio between R812S and deionized water of 3:97 was determined as the suitable quantity on the formation of water-entrapped silica particle. It provided an acceptable free flowing and dry powder including high percentage of water entrapment efficiency (more than 95%) even after storage in the accelerated condition up to 3 months. Water-entrapped silica particle produced was then incorporated in basic formulation of loose face powder. Due to the physical instability of water-entrapped silica particle, gentle mixing pattern was chosen. Basic loose face powder was initially produced by high shear mixer and then blended with the water-entrapped silica particle in tumble mixer. The mixing time during tumble was critically concerned. Five minutes of such mixing would be an optimal mixing time since the core shell structure of particle still retained. The loose face powder containing 40% of water-entrapped silica particles showed the acceptable property in accordance with the specified criteria. It provided desirable burst cooling sense with moisturizing effect. Nevertheless, oil absorption property of the above formulation had lower capacity than its positive control formulation. In conclusion, the developed formulation comprised of the first component of water-entrapped silica particles (the mixture of R812S and DI water) and the second component of the basic loose face powder. They were blend together in gentle mixer with optimum mixing time.
Evaluation of workplace oral health promotion in Kaengkhoi district, Saraburi province : a positive approach
Authors:   , Sukcharoenkosol Haruthai
Published: November 2023

This study implements a one-year workplace oral health promotion (WOHP) program in factories aiming to determine the impact on the oral health outcomes. Furthermore, it defines association among factory’s environment, behaviors and workers’ oral health status. Six factories in Kaengkhoi district of Saraburi province with less than 200 workers joined this study and defined to be a two factories of intervention I group (joined 1 year) and one factory intervention II group (joined after 6 months). The manager and head of the worker that participated in a small group discussion about the dental status of their worker were key person in the project. After that, they design and create oral health activities by themselves depending on their factory context. Six months later, they shared experience on oral health activity to each other.

This study found the difference of dental caries and oral hygiene of workers among factories. Workers in factories that have wash basins for toothbrushing in toilets had 60% (IRR= 0.4 (0.2-0.9)) lower number of decayed teeth (DT score) and 7 times (OR= 7.0 (2.2-22.8)) more likely to have good oral hygiene compared with the other. Workers in medium size factories and those working in a factory that provided additional health insurance benefits were three times more likely to have good oral hygiene. After the intervention, oral health promotion activities occurring in Intervention I group were health education posters and morning talks, reminding to brush after lunch by the head of workers and limit of snacks in breaking period. The factory in intervention II group had only educational posters activity. At 6 months, Intervention I group obtained significantly higher scores of four knowledge and behavior items that are the frequency of tooth brushing, use of fluoride toothpaste, eating fruits habit and recommended drinks. At 1 year period, most of the changed behaviors still remain. For the workers in Intervention II improved their knowledge and behaviors on the frequency of tooth brushing and self-examination. Both Intervention groups obtained better behavior on examination by dentists compared to the control group. For managers and head of workers viewpoint, the workplace oral health promotion program was possible to launch only if it does not affect worker productivity. The managers thought that control of selling snack at convenience shop was impossible but to limit the time of snack break was easier.

In conclusion, factory environments associated with workers’ oral health. This WOHP with participation can change factory environments and improve workers oral health knowledge and behaviors.
ORAL HEALTH-RELATED QUALITY OF LIFE AND SCHOOL PERFORMANCE ASSOCIATED WITH SOCIOECONOMIC STATUS, SOCIAL CAPITAL AND SCHOOL ENVIRONMENTAL FACTORS: A STUDY IN GRADE 6 PRIMARY SCHOOLCHILDREN IN SAKAEO PROVINCE
Authors:   , Kaewkamnerdpong Issarapong
Published: November 2023

The objectives of this study were to assess the associations of school environments with children’s oral behaviours and diseases. Second, to assess the hierarchical relationships of children’s school performance with Oral Health Related Quality of Life (OHRQoL), school absence, oral status, socioeconomic status and social capital. Data on 925 sixth-grade children in Sakaeo province, Thailand were collected through interview, oral examination, OHRQoL interview using the Child-Oral Impacts on Daily Performance index, parental questionnaire and school records. Chi-square test, logistic and linear regression models were applied. Provision of fruit with meals associated with low sweets consumption and low caries. Selling sweetened beverages associated with high caries, while selling meat and crispy packed snacks associated with low caries. Children in schools with oral education were more likely to brush twice a day and to brush after lunch. Children with high caries were more likely to have Condition-Specific (CS) impacts attributed to caries. High DMFT score was related to lower school performance, whereas high OHI-S score was not. Significant association between DMFT score and school performance became non-significant when CS impacts attributed to caries and school absence were applied. In conclusion, school food environments were associated with sweets consumption and caries. Children in schools with oral education had better brushing habits, but not lower sweets consumption nor caries. Dental caries was associated with CS impacts, and exerted its effect on school performance through CS impacts and school absence.
INVESTIGATION OF FOCAL MECHANISM AND FRACTAL DIMENSION INTHE THAILAND-LAOS-MYANMAR BORDERS
Authors:   , Vajchakom Kanokkarn
Published: November 2023

According to Indo-Australian and Eurasian plate collision, a large number of seismogenic fault zones were dominant as the intraplate earthquake sources in the Mainland Southeast Asia including the Thailand-Laos-Myanmar border (TLMB). In this study, we investigated the mechanism of earthquake faulting and pattern of earthquake occurrence in this region. Based on focal mechanism data reported by the Harvard Moment Centroid, the average fault movement was strike-slip faulting in NE-SW direction. The angle of fault dipping varied between 65 and 85 degree with rake angle revealing left lateral movement. In addition, we investigated 8 significant faults in TLMB such as Nam ma, Mengxing, Dein Bein Fu. The mechanism illustrates differently strike-, oblique- and dip-slips. In order to clarify the earthquake pattern, fractal dimension (Dc) was calculated with both dataset of before- and after-declustering process. In addition b value of the frequency-magnitude distribution was also analyzed. As a result for spatial investigation, the northern Thailand and eastern Myanmar reveal comparatively low b, between 0.5-0.8. Meanwhile, the other areas are comparatively high with b ranged 0.8-1.2. In temporal investigation, b value decreases continuously before both Mae Lao and Tarlay earthquakes posed and the Dc values are drop down suddenly during these earthquakes were generated. For b-Dc relationships, Mae Lao earthquake indicate the positive relation while Tarlay earthquake express negative relation. This relation, therefore, may accord to the different characteristic or activities of each fault zone.
Study on Particle-Induced Corona Discharge in Insulation Systems
Authors:   , Ou Chomrong
Published: November 2023

Gas insulated systems are in popular use for operational reliability, safety, and compactness. Metallic particles in gas insulation systems are a common source of failures. The objective of this study is to investigate the characteristic of corona discharge induced by particles having different ending shapes with various gaps between the particle and the electrode. The experiments are conducted with two configurations, (i) particles having rounded, sharp, very-sharp tips or spheroidal particle are set to stand in contact with the grounded electrode, (ii) particle having sharp or flat tips are set to float above the, grounded electrode by small gaps. An analysis is also applied to study. The corona inception voltage is estimated by using streamer breakdown criteria. For the experiment on the standing particles, the corona inception voltage is higher with sharper particle tip; and partial discharge current magnitude and charge tend to be higher or larger for higher corona inception voltage. The partial discharge charge follows the tendency of the measured values for the standing particles. For the experiment on the floating particles, the particles having flat upper tip yield direct breakdown at 0.25 to 1 mm, and corona discharge at larger gap from 1.5 to 2 mm. The corona inception voltage, current magnitude and charge depend on the gap lengths and the tip shapes of the particles.
XLPE INSULATED HIGH VOLTAGE UNDERGROUND CABLE ASSESSMENT BY LEAKAGE CURRENT STUDIES
Authors:   , Konglysan Sinthanou
Published: November 2023

The leakage current characteristic of high voltage underground cable was studied in this research. It is quite useful to assess the status of insulation after using for a while. This is an important data to do a decision making to prolong its lifetime or replacement a new one. A study was taken with the simulation circuit established from each none breakdown failure in XLPE insulated high voltage underground cable such as water treeing, electrical treeing, partial discharge, aging according to usage and surface leakage current along the cable’s accessories, etc. This study was performed with Proteus 8.0 on single phase cable with variation of voltage and frequency. The results of leakage current from each case were compared with a healthy cable in order to establish a specific tendency characteristic. These characteristics were used to be a tool to classify the failure type in the insulation. Moreover, an analytical tool was developed with Excel@ in order to evaluate the status of an insulation with failure type (if any) from the change behavior of leakage current and phase angle. This was done by comparison the leakage currents obtained from each cable in a three-phase cable system with has a same construction and length. The simulation of leakage current data from a three-phase cable system integrated with any failure type in any phase in random was putted in to the developing tool. The obtained result could be determined correctly both in the failure phase and failure type.
Economic dispatch management of electric power plants for profit maximization
Authors:   , Chanjirawittaya Sorajak
Published: November 2023

The key strategy of power plant business in the deregulated electricity supply industry is to maintain profitability, especially for a private energy company that allows general public to take part in investment for business expansion. The right strategy move is to maximize profit from selling electricity and steam, at the same time fund intensive research and development programs to seek for new alternative energy in order to supplant limited fuels and lower cost of production. The corporate annual report revealed that the major source of revenue comes from the sales of electricity and steam; however, profit has continually declined over the past few years. Decreasing profit was partially due to external effects, such as monopolized pricing determination and volatile economic factors. The company is not allowed to proportionally adjust the prices of electricity and steam to changes in such effects. The executives identified that the main cause of decreases in profit is from independent production and operations management without economic dispatch applications among the power plants. Consequently, the company had to excessively stock up fuels and schedule unplanned maintenance, which resulted in lower productivity and incapability to deliver some outputs to the customer. A spreadsheet-based program was developed to help make a small-scaled managerial decision, how much electricity and steam should be generated and sold to each customer group during periods of peak hours and off-peak hours to achieve maximum profit without violating the sales contract agreements. Several quantitative determination processes for unit cost, prices and profits were constructed and later embedded in the spreadsheet program. The mathematical linear programming model for optimizing total profit during each of the periods was formulated. Two feasible scenarios for each of the periods were comparatively simulated to see the best alternative towards profit maximization. The simulation results show that the optimal scenario is applicable to both periods. Although some electricity demand could not be fully satisfied resulting in penalty, this scenario provided the total maximum profit and was able to satisfy the power systems and the legal constraints while not severely violating the sales contract agreements relative to another scenario. The results from sensitivity analysis of exchange rate, coal price, fuel oil price, coal-to-biomass fuel ratio and fuel transfer charge also show that all of these factors have strong effects on profitability, allowing to examine a series of possible changes that will not affect the optimal solution of economic dispatch management.
An interlanguage pragmatic study on the speech act of disagreement performed by Thai EFL learners and addressed to the lecturer in the classroom context
Authors:   , Charoenroop Pattrawut
Published: November 2023

The study explored politeness strategies Thai EFL learners used to disagree with their lecturer in English in the classroom context and compared two groups of Thai EFL learners, with less and more exposure to English as a medium of instruction−the EFLt and the EFLe, respectively−in terms of the politeness strategies they used to perform student-lecturer disagreements. Their levels of English proficiency were intermediate as assessed based on their mean scores from the Test of English for International Communication. In the classroom context where there is an asymmetrical power between the students and the lecturer, Thai EFL learners were hypothesized not to use bald on-record strategies. In addition, the two groups of Thai EFL learners were hypothesized to use different politeness strategies due to their different amounts of exposure time to English as a medium of instruction. The data were collected by means of videotaping two classrooms of 18−20 students for 30 hours for 10 weeks. The learners’ verbal expressions of student-lecturer disagreements were analyzed in terms of politeness strategies based on the use of different linguistic features (Rees-Miller, 2000; Kakava, 2004; Locher, 2004; Walkinshaw, 2009; Sifianou, 2012), and secondarily analyzed in terms of paralinguistic features (Rees-Miller, 2000, Kakava, 2002; Hong, 2003), and non-verbal gestures (McClave, 2000; Pease and Pease, 2004; Sifianou, 2012). The results showed that Thai EFL learners used bald on-record strategies to disagree with their lecturer. Furthermore, the two groups of Thai EFL learners normally used different sets of politeness strategies. The EFLt normally used negative politeness strategies, that is, they modified their disagreements through imposition minimizers. The EFLe normally used bald on-record strategies, that is, they disagreed with the lecturer explicitly. This study also investigated what politeness strategies native speakers of Thai (the NT) and native speakers of English (the NE) used to disagree with their lecturers in the classroom context. Results showed that the NT normally used negative politeness strategies while the NE normally used bald on-record strategies. In comparison with the NT’s and the NE’s politeness norms, it was discovered that the EFLt transferred some pragmatic competence in Thai to their production of student-lecturer disagreements in English. However, there was no evidence to conclude that the EFLe’s pragmatic competence in English was fully developed. Having compared the EFLt’s and the EFLe’s politeness strategies they used to perform student-lecturer disagreements in English, the researcher found that their pragmalinguistic competence and sociopragmatic competence were different.
PENGARUH PENGETAHUAN AKUNTANSI, SKALA USAHA, DAN PENGALAMAN USAHA TERHADAP PENGGUNAAN INFORMASI AKUNTANSI PADA UMKM DI KECAMATAN PONOROGO
Authors: Bayu Mujakar Sogin , Hartono Arif , Farida Ulfah Ika
Published: November 2023

Penelitian ini bertujuan untuk mengetahui pengaruh pengetahuan akuntansi, skala usaha dan pengalaman usaha terhadap penggunaan informasi akuntansi pelaku UMKM di Kecamatan Ponorogo. Metode yang digunakan di dalam penelitian ini kadalah metode deskriptif kuantitatif. Populasi dalam penelitian ini gadalah pelaku UMKM yang terdaftar di Kecamatan Ponorogo Kabupaten Ponorogo. Pengambilan sampel ditentukan dengan menggunakan Kluster Random Sampling. Analisis data dilakukan dengan menggunakan analisis regresi linier berganda dan hipotesis menggunakan uji t, uji F dan koefisien determinan. Hasil dari penelitian ini menunjukkan bahwa secara parsial(1) Pengetahuan akuntansi berpengaruh positif dan signifikan terhadap penggunaan informasi akuntansi; (2) Skala usaha berpengaruh positif dan signifikan terhadap Penggunaan Informasi Akuntansi; (3) Pengalaman usaha berpengaruh positif dan signifikan terhadap Penggunaan Informasi Akuntansi. Kemudian secara simultan menunjukkan bahwa Pengetahuan akuntansi, skala usaha dan pengalaman usaha berpengaruh positif dan signifikan terhadap Penggunaan Informasi Akuntansi.
PENGARUH PELAYANAN DAN FASILITAS TERHADAP LOYALITAS PELANGGAN MELALUI KEPUASAN PELANGGAN PADA GARTENHUTTE CAFE TRAWAS
Authors: Kusuma Wardani Ellyana , Hartono  , Hidayat M Syamsul
Published: November 2023

Dunia bisnis mengalami perkembangan yang sangat signifikan dan memiliki prospek yang cukup bagus. Sehingga kondisi seperti ini membuat persaingan menjadi semakin kompetitif. Oleh karena itu setiap perusahaan harus mampu menggunakan berbagai cara agar dapat menarik pelanggan melalui kualitas pelayanannya. Perkembangan dunia bisnis saat ini mengalami pertumbuhan yang sangat pesat, baik bisnis yang bergerak di bidang manufaktur maupun jasa. Perkembangan perekonomian secara menyeluruh yang diiringi dengan perkembangan teknologi dan ilmu pengetahuan menciptakan sebuah persaingan yang semakin ketat dan tajam. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh dari pelayanan dan fasilitas terhadap loyalitas pelanggan melalui kepuasan pelanggan pada Gartenhutte cafe Trawas dengan menggunakan metode analisis regresi linier berganda yang dibantu dengan program SPSS 25. Jenis data yang digunakan dalam penelitian ini adalah deskriptif kuantitatif dengan teknik pengambilan sampel menggunakan Non-probability Sampling dengan pendekatan Purposive Sampling. Sampel yang digunakan dalam penelitian ini berjumlah 100 responden dengan berbagai kriteria tertentu. Dari analisis deskriptif dan pengujian variabel maka menghasilkan bahwa pelayanan mempengaruhi loyalitas pelanggan, fasilitas mempengaruhi loyalitas pelanggan, dan pelayanan, fasilitas mempengaruhi loyalitas pelanggan melalui kepuasan pelanggan dalam melakukan pembelian serta kunjungan ulang pada Gartenhutte cafe Trawas.
ANALISA PEMASARAN JASA TUKANG CUKUR PADA BARBER SHOP SULTAN DI KELURAHAN MOLINOW KECAMATAN KOTAMOBAGU BARAT
Authors: Sherihulla Mokoagow Sitty
Published: November 2023

Penelitian ini mengembangkan pengertian tentang individu dan kejadian dengan memperhitungkan konteks yang relevan, landasan pikir (teori), pikiran-pikiran dan ide-ide. Memahami fenomena sosial melalui gambaran holistik dan memperbanyak pemahaman mendalam makna (mearing). Penelitian ini tidak dimaksudkan untuk menguji hipotesis tertentu, tetapi hanya menggambarkan apa adanya tentang sesuatu variabel, gejala atau keadaan. Hasil penelitian menunjukkan hal yang sangat penting yang menjadi pegangan dalam pemasaran jasa yaitu kualitas pelayanan/jasa sebagai berikut: Aspek Tangible; telah memiliki dekorasi interior dan ruang tunggu yang bersih, tata letak fasilitas dan peralatan yang canggih, karyawan yang ramah dan memakai seragam kerja yang rapi. Aspek Reliability (keandalan); memiliki suatu keterampilan khusus dalam hal cukur mencukur dan bagi orang dewasa apabila telah selesai mencukur rambut, kumis ataupun jenggot, diberikan tambahan pelayanan berupa pijatan. Aspek Responsiveness; memberikan pelayanan yang cepat dan tepat. Ini diberikan agar membuat konsumen selalu merasa diperhatikan apalagi konsumen tersebut menginginkan atau mengatakan bahwa sedang diburu waktu. Inti dari responsibility (cepat tanggap) yaitu menyangkut kemauan dari karyawan dan pengusaha untuk membantu pelanggan dan memberikan jasa dengan cepat serta mendengarkan dan mengatasi keluhan/komplain dari konsumen. Aspek Asurance; karyawan sebelum diterjunkan ke lapangan atau tempat-tempat yang akan menjadi objek penghasilan cukur mencukur ini, terlebih dahulu diberikan pendidikan dan pelatihan agar memiliki pengetahuan yang cukup. Aspek Empathy;  saat  karyawan  sedang memberikan pelayanan kepada konsumen biasanya  tanpa disengaja mengadakan pembicaraan tentang apa pekerjaan konsumen, hobi konsumen, statusnya konsumen dan hal-hal lain, sehingga membuat konsumen tak merasa kalau waktu cukur mencukurnya telah selesai. Saran agar lebih meningkatkan pelayanan jasa yang lebih baik lagi ke depan, terutama  dalam hal bagaimana menarik minat konsumen untuk tetap menjadi pelanggan yang tetap.
SISTEM INFORMASI PEMASARAN DAN MANAJEMEN ORDER PRODUK PADA TOKO SUMBER RAYA KOTAMOBAGU
Authors: Syafarin Mokoginta Moch Natsir
Published: November 2023

Perumusan  Masalah  dalam  penelitian ini adalah untuk mengetahui sistem informasi pemasaran dan manajemen order produk pada Toko Sumber Raya Kotamobagu. Penelitian ini menggunakan Teknik analisis deskriptif, atau uraian tentang sistem informasi pemasaran dan manajemen order produk pada Toko Sumber Raya Kotamobagu. (Raymond McL eod, 2011:213). Sumber data primer penelitian adalah  Pimpinan  dan  karyawan Toko Sumber Raya Kotamobagu sedangkan Metode pengumpulan data melalui observasi, wawancara dan dokumentasi.  Penelitian ini diharapkan bermanfaat bagi Pimpinan dan Karyawan Toko Sumber Raya Kotamobagu sebagai bahan penambah informasi dan  bahan masukan khususnya dalam penyempurnaan  sistem informasi pemasaran dan manajemen order produk  yang efektif.  Hasil penelitian menunjukkan aplikasi Sistem Informasi Penjualan yang digunakan dalam mengelola transaksi pembelian/ penjualan di Toko Sumber Raya Kotamobagu masih bersifat single user dengan bahasa pemrograman Visual Basic NET sehingga diharapkan Sistem informasi yang sudah dibangun bisa dikembangkan menjadi multi user sehingga bisa mempercepat proses pengolahan data dan transaksi.