http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
박병권(Byung-Kwon Park),임종환(Jong-Hwan Lim),황윤환(Youn-Hwan Hwang),김명석(Myung-Seok Kim),송인배(In-Bae Song),이홍기(Hong-Gee Lee),한성진(Sung-Jin Han),황미현(Mi-Hyun Hwang),김종우(Jong-Woo Kim),이만휘(Man-Hee Rhee),박승춘(Seong-C 한국독성학회 2006 Toxicological Research Vol.22 No.4
This study was carried out to investigate the acute toxicity of surfactin C in mice. Surfactin C was administered orally at does of 0, 381, 610, 977, 1562 and 2500 ㎎/㎏. Number of deaths, clinical signs, body weights, feed and water consumptions, and biochemical examinations were investigated for 14 days after single oral administration of surfactin C. LD?? value was over 2500 ㎎/㎏ in mice. In addition, no differences were found between control and treated groups in clinical signs, body weight gains, hematology, serum chemistry, feed and water consumptions. The results indicate that surfactin C did not show any toxic effects at 2500 ㎎/㎏ in mice.
Ha, J.K.,Lee, S.S.,Gao, Z.,Kim, C.-H.,Kim, S.W.,Ko, Jong Y.,Cheng, K.-J. Asian Australasian Association of Animal Productio 2001 Animal Bioscience Vol.14 No.7
The effects of various concentrations of saturated fatty acids (SFA; caprylic, capric and stearic acids) on the growth of the anaerobic fungus, Neocallimastix frontalis C5-1 isolated from the rumen of a Korean native goat were investigated. At higher concentrations of fatty acids (0.1%, w/v), the addition of SFA strongly decreased filter paper (FP) cellulose digestion and polysaccharide-degrading enzyme activity. The sensitivity of the rumen anaerobic fungus to the added fatty acids increased in the following order: caprylic ($C_{8:0}$)>capric($C_{10:0}$)>stearic($C_{18:0}$) acid, although stearic acid had no significant (p<0.05) inhibitory effects at any of the concentrations tested. However, the addition of SFA at lower concentrations (0.01 and 0.001% levels), did not inhibit FP cellulose degradation and enzyme activity. Furthermore, although these parameters were slightly stimulated by the addition of SFA, they were not statistically different from control values. This is the first report examining the effects of fatty acids on anaerobic gut fungi. We found that the lower levels of fatty acids used in this experiment were able to stimulate the growth and specific enzyme activities of rumen anaerobic fungi, whereas the higher levels of fatty acids were inhibitory with respect to fungal cellulolysis.
Jong Hyun Moon,Jang Jin,C. R. Lee,Choong Hoon Lee,J. J. Kim,Kyu Chang Park,Sung Gu Kang,Sung Hoon Lim,Woo Kyung Bae 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.45 No.2
We have grown carbon nanotubes (CNTs) in the gate holes for triode-type FEA (eld-emitter array) by plasma-enhanced chemical vapor deposition (PECVD) by varying the growth temperature between 400 C and 580 C. By applying plasma pretreatment onto catalyst metal, we have developed the low-temperature growth of CNTs by PECVD for triode-type FEA. The activation energy for the growth rate was found to be 0.47 eV, much less than that by chemical vapor deposition (1.2 1.5 eV). Plasma post-treatment on the grown CNTs can control the length of CNTs in the gate hole, resulting in enhanced eld-emission characterization. Uniform light emission from the triode-type eld emitter could be realized by optimizing the CNT length through the plasma treatment time.
Yim, Jong Hyuk,Joe, Sung-yoon,Pang, Christina,Lee, Kyung Moon,Jeong, Huiseong,Park, Ji-Yong,Ahn, Yeong Hwan,de Mello, John C.,Lee, Soonil American Chemical Society 2014 ACS NANO Vol.8 No.3
<P>We report the fabrication of efficient indium–tin–oxide-free organic solar cells based on poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM). All layers of the devices from the lowermost silver nanowire cathode to the uppermost conducting polymer anode are deposited from solution and processed at plastic-compatible temperatures <200 °C. Owing to the absence of an opaque metal electrode, the devices are semitransparent with potential applications in power-generating windows and tandem-cells. The measured power conversion efficiencies (PCEs) of 2.3 and 2.0% under cathode- and anode-side illumination, respectively, match previously reported PCE values for equivalent semitransparent organic solar cells using indium tin oxide.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2014/ancac3.2014.8.issue-3/nn406672n/production/images/medium/nn-2013-06672n_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn406672n'>ACS Electronic Supporting Info</A></P>
Kim, Jong Kyo,Mark C. K. Yang 전북대학교 공업기술연구소 1984 工學硏究 Vol.15 No.-
2차 B-스플라인 함수를 이용하여 곡선조화를 자동적으로 행할 수 있는 방법과 그 응용에 대하여 고려하였다. 2차 B-스플라인 함수에 의한 곡선조화는 아직까지 시도된바 없으나, 원내의 곡선과 조화된 곡선간의 최대간격으로 정의되는, 주어진 오차한계 내에서 2차 B-스플라인 함수를 이용한 곡선조화를 행함으로써 원래의 곡선과 거의 일치하는 조화곡선을 아주 빠를 속도로 실현할 수 있었으며, 또한 이를 컴퓨터 애니메이션에 이용함으로서 상당히 빠른 속도의 dynamic graphic image를 실현할 수 있었다.
Biodiesel synthesis using chicken manure biochar and waste cooking oil
Jung, Jong-Min,Lee, Sang-Ryong,Lee, Jechan,Lee, Taewoo,Tsang, Daniel C.W.,Kwon, Eilhann E. Elsevier Applied Science 2017 Bioresource technology Vol.244 No.1
<P><B>Abstract</B></P> <P>This study laid an emphasis on the possible employment of biochar generated from pyrolysis of chicken manure to establish a green platform for producing biodiesel. To this end, the pseudo-catalytic transesterification reaction using chicken manure biochar and waste cooking oil was investigated. Compared with a commercial porous material (SiO<SUB>2</SUB>), chicken manure biochar generated from 350°C showed better performance, resulting in 95.6% of the FAME yield at 350°C. The Ca species in chicken manure biochar imparted strong catalytic capability by providing the basicity for transesterification. The identified catalytic effect also led to the thermal cracking of unsaturated FAMEs, which decreased the overall FAME yield. For example, 40–60% of converted FAMEs were thermally degraded. To avoid undesirable thermal cracking arising from the high content of the Ca species in chicken manure biochar, the fabrication of chicken manure biochar at temperatures ≥350°C was highly recommended.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Biodiesel synthesis using chicken manure biochar. </LI> <LI> Establish a green platform for producing biodiesel using chicken manure biochar. </LI> <LI> Enhanced yield of biodiesel using chicken manure biochar due to strong catalytic capability. </LI> <LI> 95.6% of the FAME yield using chicken manure biochar generated from 350°C. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
The 14-3-3 Gene Function of Cryptococcus neoformans Is Required for its Growth and Virulence
( Jingbo Li ),( Yun C. Chang ),( Chun Hua Wu ),( Jennifer Liu ),( Kyung J. Kwon Chung ),( Sheng He Huang ),( Hiro Shimada ),( Rob Fante ),( Xiaowei Fu ),( Ambrose Jong ) 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.5
Cryptococcus neoformans is a life-threatening pathogenic yeast that causes devastating meningoencephalitis. The mechanism of cryptococcal brain invasion is largely unknown, and recent studies suggest that its extracellular microvesicles may be involved in the invasion process. The 14-3-3 protein is abundant in the extracellular microvesicles of C. neoformans, and the 14-3-3-GFP fusion has been used as the microvesicle’s marker. However, the physiological role of 14-3-3 has not been explored. In this report, we have found that C. neoformans contains a single 14-3-3 gene that apparently is an essential gene. To explore the functions of 14-3-3, we substituted the promoter region of the 14-3-3 with the copper-controllable promoter CTR4. The CTR4 regulatory strain showed an enlarged cell size, drastic changes in morphology, and a decrease in the thickness of the capsule under copper-enriched conditions. Furthermore, the mutant cells produced a lower amount of total proteins in their extracellular microvesicles and reduced adhesion to human brain microvascular endothelial cells in vitro. Proteomic analyses of the protein components under 14-3-3-overexpressed and -suppressed conditions revealed that the 14-3-3 function(s) might be associated with the microvesicle biogenesis. Our results support that 14-3-3 has diverse pertinent roles in both physiology and pathogenesis in C. neoformans. Its gene functions are closely relevant to the pathogenesis of this fungus.