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Kyu-shik Jeong,정원일,Jae-yong Chung,Mi-young An,Chae-yong Jung,Gyoung-jae Lee,Jong-soo Kang,Byeong-cheol Kang,Young-heun Jee,Bruce H Williams,Young-oh Kwon,Da-hee Jeong 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2
Cirrhosis Occurring in a Young Woodchuck (Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus (WHV)Da-hee Jeong, Won-il Jeong, Jae-yong Chung, Mi-young An, Chae-yong Jung, Gyoung-jae Lee1, Jong-soo Kang1, Byeong-cheol Kang2, Young-heun Jee3, Bruce H Williams4, Young-oh Kwon5 and Kyu-shik Jeong*College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea1Shinwon Scientific Co., LTD, Research Institute, Suwon, Korea2Clinical Research Institute, Seoul National University, Seoul 110-744, Korea3College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea
( Williams Agyei Appiah ),박주남,변승우,유명현,이용민 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
To quantify the capacity fade mechanism in lithium ion batteries composed of a spinel-based cathode and an artificial graphite, a comprehensive mathematical model describing the cycling performance of LiMn2O4/graphite lithium ion cell is developed in this work. The developed model is incorporated into the Newman’s Porous Composite Electrode framework (PCE) and implemented in the battery module of COMSOL Multiphysics. The proposed model is used to investigate the effects of variations in the ambient temperature and of voltage range of cycling on the capacity fade. The effect of changes in the volume fraction of cathode active material, resistance in the cell and state of charge are also studied.
Commitment to Sport and Exercise: Re-examining the Literature for a Practical and Parsimonious Model
Williams, Lavon The Korean Society for Preventive Medicine 2013 Journal of Preventive Medicine and Public Health Vol.46 No.suppl
A commitment to physical activity is necessary for personal health, and is a primary goal of physical activity practitioners. Effective practitioners rely on theory and research as a guide to best practices. Thus, sound theory, which is both practical and parsimonious, is a key to effective practice. The purpose of this paper is to review the literature in search of such a theory - one that applies to and explains commitment to physical activity in the form of sport and exercise for youths and adults. The Sport Commitment Model has been commonly used to study commitment to sport and has more recently been applied to the exercise context. In this paper, research using the Sport Commitment Model is reviewed relative to its utility in both the sport and exercise contexts. Through this process, the relevance of the Investment Model for study of physical activity commitment emerged, and a more parsimonious framework for studying of commitment to physical activity is suggested. Lastly, links between the models of commitment and individuals' participation motives in physical activity are suggested and practical implications forwarded.
Williams, MichaelP. A.,Ethirajan, Manivannan,Ohkubo, Kei,Chen, Ping,Pera, Paula,Morgan, Janet,White, William H.,Shibata, Masayuki,Fukuzumi, Shunichi,Kadish, Karl M.,Pandey, Ravindra K. American ChemicalSociety 2011 Bioconjugate chemistry Vol.22 No.11
<P>Purpurinimide methyl esters, bearing variable lengthsof N-substitutions,were conjugated individually to a cyanine dye with a carboxylic acidfunctionality. The results obtained from <I>in vitro</I> and <I>in vivo</I> studies showed a significant impactof the linkers joining the phototherapeutic and fluorescence imagingmoieties. The photosensitizer–fluorophore conjugate with aPEG linker showed the highest uptake in the liver, whereas the conjugatelinked with two carbon units showed excellent tumor-imaging and PDTefficacy at 24 h postinjection. Whole body imaging and biodistributionstudies at variable time points portrayed enhanced fluorescent uptakeof the conjugates in the tumor compared to that in the skin. Interestingly,the conjugate with the shortest linker and the one joining with twocarbon units showed faster clearance from normal organs, e.g., theliver, kidney, spleen, and lung, compared to that in tumors. Bothimaging and PDT efficacy of the conjugates were performed in BALB/cmice bearing Colon26 tumors. Compared to the others, the short linkerconjugate showed poor tumor fluorescent properties and as a corollarydoes not exhibit the dual functionality of the photosensitizer–fluorophoreconjugate. For this reason, it was not evaluated for <I>in vivo</I> PDT efficacy. However, in Colon26 tumor cells (<I>in vitro</I>), the short linker was highly effective. Among the conjugates withvariable linkers, the rate of energy transfer from the purpurinimidemoiety to the cyanine moiety increased with deceasing linker length,as examined by femtosecond laser flash photolysis measurements. Noelectron transfer from the purpurinimide moiety to the singlet excitedstate of the cyanine moiety or from the singlet excited state of thecyanine moiety to the purpurinimide moiety occurred as indicated bya comparison of transient absorption spectra with spectra of the one-electronoxidized and one-electron reduced species of the conjugate obtainedby spectroelectrochemical measurements.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/bcches/2011/bcches.2011.22.issue-11/bc200345p/production/images/medium/bc-2011-00345p_0016.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/bc200345p'>ACS Electronic Supporting Info</A></P>
Developing ICT Competence in Pre-service Teacher Training : A Singapore case
WILLIAMS, MICHAEL D. 이화여자대학교 국제통상협력연구소 2001 Jounal of APEC Studies Vol.3 No.1
Recent changes to the Singapore education system have moved particularly rapidly in the area of the use of computer technologies in schools, and have produced marked demands on teachers to upgrade their technology skills and practices to meet this new educational environment. This paper describes the process which the Singapore education profession, especially pre-service teacher preparation, has undergone in the past several years in an effort to prepare teachers to integrate information and communications technologies (ICT) into their teaching and learning. A variety of factors producing these changes is presented, followed by an updated set of ICT competencies for teachers, as well as the response by the Singapore National Institute of Education to meet these new professional requirements.
An experimental and numerical approach in strength prediction of reclaimed rubber concrete
Williams, Kanmalai C.,Partheeban, P. Techno-Press 2018 Advances in concrete construction Vol.6 No.1
Utilization of waste tires may be considered as one of the solution to the problems faced by the local authorities in disposing them. Reclaimed rubber (RR) is being used in concrete for replacing conventional aggregates. This research work is focused on the strength prediction of reclaimed rubber concrete using a Genetic Algorithm (GA) for M40 grade of concrete and comparing it with experimental results. 1000 sets were taken and 100 iterations were run during training of GA models. A base study has been carried out in this research work partially replacing cement with three types of fillers such as Plaster of Paris (POP), Fly Ash (FA) and Silica Fume (SF). A total of 243 cubes were cast and tested for compression using a Universal Testing Machine. It was found that SF produced maximum strength in concrete and was used in the main study with reclaimed rubber. Tests were conducted on 81 cube samples with a combination of optimum SF percent and various proportions of RR replacing coarse aggregates in concrete mix. Compressive strength tests of concrete at 7, 14 and 28 days reveal that the maximum strength is obtained at 12 percent replacement of cement and 9 percent replacement of coarse aggregates respectively. Moreover the GA results were found to be in line with the experimental results obtained.
The Lick AGN Monitoring Project 2011: Dynamical Modeling of the Broad-line Region
Williams, Peter R.,Pancoast, Anna,Treu, Tommaso,Brewer, Brendon J.,Barth, Aaron J.,Bennert, Vardha N.,Buehler, Tabitha,Canalizo, Gabriela,Cenko, S. Bradley,Clubb, Kelsey I.,Cooper, Michael C.,Filippen American Astronomical Society 2018 The Astrophysical journal Vol.866 No.2
Hypersensitive site 6 of the Th2 locus control region is essential for Th2 cytokine expression
Williams, Adam,Lee, Gap Ryol,Spilianakis, Charalampos G.,Hwang, Soo Seok,Eisenbarth, Stephanie C.,Flavell, Richard A. National Academy of Sciences 2013 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.110 No.17
<P>The T helper type 2 (Th2) cytokine genes <I>Il4</I>, <I>Il5</I>, and <I>Il13</I> are contained within a 140-kb region of mouse chromosome 11 and their expression is controlled by a locus control region (LCR) embedded within this locus. The LCR is composed of a number of DNase I–hypersensitive sites (HSs), which are believed to encompass the regulatory core of the LCR. To determine the function of these sites, mutant mice were generated in which combinations of these HSs had been deleted from the endogenous LCR, and the effect on Th2 cytokine expression was assessed through the use of in vivo and in vitro models. These experiments revealed that, although all of the hypersensitive sites analyzed are important for appropriate LCR function, some sites are more important than others in regulating cytokine expression. Interestingly, each LCR mutation showed contrasting effects on cytokine expression, in some cases with mutants displaying opposing phenotypes between in vitro cultures and in vivo immunizations. These studies indicated that Rad50 hypersensitive site 6 was the singularly most important HS for Th2 cytokine expression, displaying consistent reductions in cytokine levels in all models tested. Furthermore analysis of chromatin modifications revealed that deletion of Rad50 hypersensitive site 6 impacted epigenetic modifications at the promoters of the <I>Il4</I>, <I>Il5</I>, and <I>Il13</I> genes as well as other regulatory sites within the Th2 locus.</P>