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Publication Open Access ปัจจัยทำนายความตั้งใจไม่ดื่มสุราของนักศึกษาระดับปริญญาตรีในมหาวิทยาลัยแห่งหนึ่งทางภาคใต้ของประเทศไทย(2558) ประภา ยุทธไตร; อุษา จันทร์แย้ม; Prapa Yuttatri; Usa Junyaem; มหาวิทยาลัยมหิดล. คณะพยาบาลศาสตร์. ภาควิชาสุขภาพจิตและการพยาบาลจิตเวช; วิทยาลัยพยาบาลบรมราชชนนี นครศรีธรรมราช. กลุ่มวิชาการพยาบาลสุขภาพจิตและจิตเวชDrinking in undergraduate student is a major health risk behavior problem. The purpose of this research is to study factors predicting intention to non-drinking in 6 months ahead. Subject were 203 first-year students . The theory of planned... behavior by Ajzen (1991) was used as the conceptual framework of this study and used to develop the research instruments. The research instruments were a personal information form, attitudes toward non-drinking, subjective norms toward non-drinkingItem Open Access Buckling of rectangular nanoplates - Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications(2019) Y.Sapsathiarn; R.K.N.D. Rajapakseof nanostructures is an important issue in both design and fabrication. In this study, buckling response of rectangular nanoplates under compressive in-plane loading is considered by using a modified continuum theory. In classical continuum mechanics, strain energy...Size-dependent behaviour is a key characteristic of nanostructures such as nanotubes, nanoplates and nanobeams. The primary reason for size-dependent behavior is the high surface energy of nanomaterials and nanostructures. Atoms near the surfacesPublication Open Access Effective properties of piezoelectric fiber-reinforced composites with imperfect interface(2017-03-01) Yasothorn Sapsathiarn; Rattanan Tippayaphalapholgul; Teerapong Senjuntichai; Mahidol University; Chulalongkorn Universitywith imperfect fiber-matrix interface bonding conditions. The micromechanics analysis is based on the periodic microfield micromechanics theory and the boundary element method (BEM). The imperfect bonding between the piezoelectric fibers and matrix is takenPublication Open Access Mechanistic models for nanobeams with surface stress effects(2018-11-01) Y. Sapsathiarn; R. K.N.D. Rajapakse; Simon Fraser University; Mahidol Universityformulations. A key difference in the shear force boundary condition is noted. Analytical solutions for simply supported, cantilevered, and fixed-fixed beams are reexamined. It is shown that the unusual behavior of nanocantilevers predicted by the Young-LaplacePublication Open Access Thermoregulatory correlates of nausea in rats and musk shrews(2014) Sukonthar Ngampramuan; Matteo Cerri; Flavia Del Vecchio; Corrigan, Joshua J; Amornrat Kamphee; Dragic, Alexander S; Rudd, John A; Romanovsky, Andrej A; Eugene Nalivaiko; Mahidol University. Institute of Molecular Biosciencesmurinus), which does have a vomiting reflex. In rats, motion sickness was induced by rotating them in their individual cages in the horizontal plane (0.75 Hz, 40 min) and confirmed by reduced food consumption at the onset of dark (active) phase. In 100Publication Open Access การสังเคราะห์งานวิจัยด้านสังคมศาสตร์และพฤติกรรมศาสตร์ที่เกี่ยวข้องกับพฤติกรรมทางเพศของประเทศไทย ในรอบ 10 ปีที่ผ่านมา(ในระหว่างปี พ.ศ. 2538 – 2547) โดยวิธีการวิเคราะห์อภิมาน(2549) บังอร เทพเทียน; วิลาสลักษณ์ ชัววัลลี; สธญ ภู่คง; พันธุ์ทิพย์ รามสูต; มหาวิทยาลัยมหิดล. สถาบันพัฒนาการสาธารณสุขอาเซียน.; มหาวิทยาลัยศรีนครินทรวิโรฒ ประสานมิตร. สถาบันวิจัยพฤติกรรมศาสตร์ประยุกต์.ทางเพศ สำหรับตัวแปรเกิดจากการนำผลการวิจยั แต่ละเรื่องมาบูรณาการกัน ทำให้ได้ ภาพรวมของปรากฎการณ์ แต่กรอบของการวิเคราะห์ได้ประยุกต์ใช้ทฤษฎีระบบทางเพศสัมพันธ์ (Sexual System Theory) ของอบรามสัน (Abramson P.R. 1983; 49–60 ) การปรับค่าความสัมพันธ์จากสถิติ...The study aimed to synthesize social and behavior research finding on sexual behavior during 10 years (1994- 2003) by using Meta - analysis. Meta – analysis refers to the statistical integration of the results of sexual behavior. IndependentPublication Open Access ผลของโปรแกรมเกมคอมพิวเตอร์ "Kid...คิด" ต่อทัศนคติ การรับรู้บรรทัดฐานของสังคม การรับรู้ความสามารถในการควบคุมพฤติกรรม และความตั้งใจในการไม่แสดงออกพฤติกรรมเสี่ยงทางเพศสัมพันธ์ ของนักเรียนมัธยมศึกษาตอนปลายที่มีความพิการทางการได้ยิน(2563) พัดชา ไชยสำแดง; รุจา ภู่ไพบูลย์; อัจฉรียา ปทุมวัน; Patcha Chaisamdaeng; Rutja Phuphaibul; Autchareeya Patoomwan; มหาวิทยาลัยมหิดล. คณะแพทยศาสตร์โรงพยาบาลรามาธิบดี. โรงเรียนพยาบาลรามาธิบดีThis quasi-experimental study with a two-group pre-posttest design aimed to examine effects of the computer game program “Kid...Think” towards attitudes, subjective norms, perceived behavioral control, and intention to not express... sexual risk behaviors (SRBs) of deaf students in high schools. Convenience sampling was used to select the sample from the school for only deaf people in two central regions and then was divided into 34 studentsItem Open Access Response of Monopile Offshore Wind Turbine Structure Subjected to Seismic Loads and Degradation(2018) Yeter, Baran; Garbatov, Yordan; Guedes Soares, Carlos; Wonsiri Punurai; M.S. Azad; Mahidol University. Faculty of Engineering. Department of Civil and Environmental Engineering; Universidade de Lisboa. Instituto Superior Técnico. Centre for Marine Technology and Ocean Engineering (CENTEC)The objective of this work is to analyse a monopile offshore wind turbine structure subjected to the coupled loads originating from wind, soil interactions and possible seismic activities. The monopile support structure is designed to be installed at 25 m water depth to support a 5MW wind turbine. The structural assessment is performed based on the finite element method accounting for the nonlinearities associated with the geometry and material. The nonlinear structural response of the monopile structure during the seismic activity is assessed accounting for the time-variant degradation of the load-carrying capacity due to corrosion. The nonlinear response of the degrading structures at different years of the service life is presented.Publication Open Access Use of Agricultural Residues to Remove Iron from Groundwater in Modified Airlift Aerator(2019) Thanakrit Neamhom; Mahidol University. Faculty of Public Health. Department of Environmental Health ScienceThis work investigated groundwater iron adsorption capacity from rice husk, rice straw, water hyacinth and coconut shell, agricultural residues commonly found in Thailand. This study also investigated the adsorption behaviorPublication Open Access Fast and Efficient Removal of Hexavalent Chromium from Water by Iron Oxide Particles(2018) Duangta Kitkaew; Athit Phetrak; Sumate Ampawong; Rachaneekorn Mingkhwan; Doungkamon Phihusut; Kamolnetr Okanurak; Chongrak Polprasert; Mahidol University. Faculty of Public Health. Department of Sanitary Engineering; Mahidol University. Center of Excellence on Environmental Health and Toxicology (EHT); Mahidol University. Faculty of Tropical Medicine. Department of Social and Environmental Medicine; Mahidol University. Faculty of Tropical Medicine. Department of Tropical Pathology; Chulalongkorn University. Environmental Research Institute; Thammasat University. Faculty of Engineering. Department of Civil EngineeringIron oxide particles (IOPs) were synthesized by chemical co-precipitation technique and further used as an adsorbent in removing hexavalent chromium (Cr(VI)) from aqueous solutions during batch adsorption. The IOP adsorbent had specific surface area of 65 m2/g, total pore volume of 0.25 cm3/g and mostly contained a mesoporous structure. The analysis of scanning and transmission electron microscopy indicated that the adsorbent contained a substantial amount of iron oxide of about 66%, which was well distributed throughout the adsorbent. The IOP adsorbent showed a rapid and efficient Cr(VI) removal that followed Langmuir adsorption isotherm model with maximum adsorption capacity of 2.39 mg-Cr(VI)/g-IOP, demonstrating a monolayer formation on the adsorptive sites of IOP. The kinetic adsorption of Cr(VI) on the IOP followed the pseudo-second-order model, suggesting chemisorption. Thus, the IOP adsorbent provides a potentially effective technology in eliminating of Cr(VI) from water since it can remove appreciable amounts of Cr(VI) with a relatively short contact time of 30 min.