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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
Synergetic effects of blended cathode active materials: Simulation and Experiment
( Williams Agyei Appiah ),박주남,변승우,유명현,이용민 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
In the quest to achieve a higher capacity electrode materials for lithium ion batteries, different active materials for both cathode and anode are being studied. However, the available electrode materials which have been discovered have both good and bad sides. Hence, the electrochemical characteristics of Li-ion cells made of blended cathode material composed of LiMn2O4 and LiNi0.6Co0.2Mn0.2O2 and an artificial graphite anode are being studied via both experiments and simulation. The cycle performance of the two pure cell chemistries we modelled by considering Mn2+ dissolution in the cathode and solid electrolyte interphase information in the anode. By fitting our model predictions to the experimental data, the percentage of each contributing factor to the total capacity fade was determined. Ragone plots were used to study the correlation between the energy density and average specific power of the two pure chemistries and their blends.
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>
( 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.
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>