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Background: Most febrile neutropenic patients are treated in an aggressive manner. However, identification of low-risk patients may enable clinicians to administer risk-based treatment. The object of this study is to certify the factors associated with increased risk at the time of visiting the emergency department. Methods: This is a retrospective study. We reviewed the medical records of 101 febrile neutropenic patients who had visited the emergency department of Seoul National University Hospital from January 1998 to August 1999. We assumed 22 risk prediction factors that could be assessed at admission to the emergency department and 5 factors that could be assessed during treatment course. To find independent risk-prediction factors, we analyzed these factors respectively by using multiple regression analysis. Results: Tachycardia(aOR=136.5), altered mentality(aOR=28.8), decreased renal function(aOR=20.1), and significant comorbidity(aOR=17,2) are the independent factors associated with higher mortality. Altered mentality(aOR=31.6) and decreased renal function(CCr < 75㎖/min, aOR=5.4) are those associated with a higher incidence of septic shock. Independent factors associated with persistent(more than 3 days) fever are the early(within 10 days) onset of fever after last chemotherapy(aOR=8.8) and the existence of new pulmonary infiltrates on a simple chest X-ray(aOR=4.3). Conclusion: The stability of vital signs, the change of mentality, the renal function, the existence of significant comorbidity, the existence of new pulmonary infiltrates, and the rate of neutropenia are clinically useful risk-prediction factors in febrile neutropenia at the time of visiting the emergency department.
The diversity of the denitrifying bacterial populations in Daejeon Sewage Treatment Plant was examined using a culture-dependent approach. Of the three hundred and seventy six bacterial colonies selected randomly from agar plates, thirty-nine strains that showed denitrifying activity were selected and subjected to further analysis. According to the morphological and biochemical properties, the thirty nine isolates were divided into seven groups. This grouping was supported by an unweighted pair group method, using an arithmetic mean (UPGMA) analysis with fatty acid profiles. Restriction pattern analysis of 16S rDNA with four endonucleases (AluI, BstUI, MspI and RsaI) again revealed seven distinct groups, consistent with those defined from the morphological and biochemical properties and fatty acid profiles. Through the phylogenetic analysis using the 16S rDNA partial sequences, the main denitrifying microbial populations were found to be members of the phylum, Proteobacteria; in particular, classes Gammaproteobacteria (Aeromonas, Klebsiella and Enterobacter) and Betaproteobacteria (Acidovorax, Burkholderia and Comamonas), with Firmicutes, represented by Bacillus, also comprised a major group.
Woon Yong Choi(최운용),Choon Geun Lee(이춘근),Yong Chang Seo(서용창),Ji Seon Kim(김지선),Chi Ho Song(송치호),Bo-Hyeon Kim(김보현),Dae-Hyun Shin(신대현),Chang-Soon Yoon(윤창순),Hye-Won Lim(임혜원),Hyeon Yong Lee(이현용) 한국약용작물학회 2012 한국약용작물학회 학술대회논문집 Vol.2012 No.1
Lim, Yong,Kim, Tack-Joong,Jin, Yong-Ri,Kim, Dong-Woon,Kwon, Jin-Sook,Son, Ju-Hee,Jung, Jae-Chul,Avery, Mitchell A,Son, Dong Ju,Hong, Jin Tae,Yun, Yeo-Pyo Williams Wilkins 2007 The Journal of Pharmacology and Experimental Thera Vol.321 No.2
<P>The abnormal proliferation of vascular smooth muscle cells (VSMCs) in arterial walls is an important pathogenetic factor of vascular disorders such as atherosclerosis and restenosis after angioplasty. Epothilone B, a novel potential antitumor compound, has a potent effect on preventing postangioplasty restenosis. Therefore, we established an in vivo rat carotid injury model and examined the potential effects of epothilone B on cardiovascular disease. We found that epothilone B potently prevented neointimal formation and in vivo VSMCs proliferation. In addition, we also showed that epothilone B significantly inhibited 5% fetal bovine serum (FBS)- and 50 ng/ml platelet-derived growth factor (PDGF)-BB-induced proliferation and cell cycle progression in rat aortic VSMCs. Furthermore, FBS and PDGF-BB induced the activations of extracellular signal-regulated kinases 1 and 2, Akt, phospholipase C gamma 1, and PDGF-receptor beta chain tyrosine kinase were not changed by epothilone B. However, epothilone B treatment caused a significant decrease in the level of cyclin-dependent protein kinase (CDK) 2, whereas it caused no change in the levels of cyclin E and down-regulated the phosphorylation of retinoblastoma, which plays a critical role in cell cycle regulation. Furthermore, levels of p27, an inhibitor of cyclin E/CDK2 complex, were significantly increased in VSMCs treated with epothilone B, indicating that this might be a major molecular mechanism for the inhibitory effects of epothilone B on the proliferation and cell cycle of VSMCs. These findings suggest that epothilone B can inhibit neointimal formation via the cell cycle arrest by the regulation of the cell cycle-related proteins in VSMCs.</P>
Koh, Yong Bok,Min, Byong Sok,Lim, Soo Kil,Lee, Yong Kak,Bahk, Yong Whee,Chung, Woon Hyok,Lee, Chong Moo,Lee, Chong Hoon CATHOLIC MEDICAL CENTER 1975 Bulletin of the Clinical Research Institute Vol.3 No.1
최운용 ( Woon Yong Choi ),이춘근 ( Choon Geun Lee ),송치호 ( Chi Ho Song ),서용창 ( Yong Chang Seo ),김지선 ( Ji Seon Kim ),김보현 ( Bo Hyeon Kim ),임혜원 ( Hye Won Lim ),이현용 ( Hyeon Yong Lee ) 한국산업식품공학회 2012 산업 식품공학 Vol.16 No.4
저탄소 공정을 이용한 추출 기술인 초음파, 마이크로파 및 초고압추출 공정기술의 이산화탄소 배출량(TCO2)과 얻어진 저분자 진세노사이드 총량의 상관관계를 비교하였다. 기존의 공정인 열수 추출 공정의 TCO2 배출량은 약 0.4 TCO2로 나타났다. 마이크로파 추출 공정의 경우 0.1437 Ton 당 CO2를 배출하는 것으로 확인 되었다. 또한, 초음파 추출 공정의 경우 0.0862 Ton 당 CO2를 배출하는 것을 확인 하였으며, 초고압추출 공정의 경우 0.1014 Ton당 CO2를 배출하는 것을 확인 하였다. 저탄소 공정별 저분자 진세노사이드의 전환된 양을 측정한 결과 마이크로파 추출 공정의 경우 약 246.65% 정도 증진된 것을 확인 할 수 있었다. 또한, 초음파 공정의 약 275.71% 증진된 결과를 보였다. 초고압추출 공정의 경우에는 약 295.21% 증진된 결과를 얻었다. 전체적으로 열수 추출 공정의 경우 얻어진 저분자 진세노사이드가 적은 반면 CO2 배출량이 매우 높은 것을 확인하였다. 반대로, 저탄소추출 공정인 마이크로파, 초음파 및 초고압 공정의 경우 얻어진 저분자 진세노사이드의 양이 높으며, 방출되는 CO2의 양이 기존의 재래 방법보다 적은 것을 확인 하였다. 따라서, 저탄소추출 공정인 마이크로파, 초음파, 초고압추출 공정을 통해 인삼을 효과적으로 추출을 할 수 있으며, 친환경 저탄소 공법을 통해 CO2 발생량을 억제하여 경제적으로 천연물을 추출할 수 있을 것으로 사료된다. This study is to demostrate how the low molecular ginsenosides can be produced from low grade fresh ginsengs by low CO2 emission processes, Since it was known to apply the low carbon dioxide emission processes to the ginseng processing companies due to requiring high temperature extractions in low grade fresh ginseng, Several types of low CO2 emission processes were empolyed in this experiment such as microwave, ultrasound, ultra-high pressure extraction process that can be more eaisly scaled up to ginseng processing industries. From microwave extraction process, 1.290 mg/g of total low molecule ginsenosides (sum of Rg2, Rg3 and Rh2) were obtained while 1.442mg/g and 1.258 mg/g were estimated from ultrasonification and ultra high pressure extraction processes, respectively. Total carbon dioxide production (TCO2) from each process was also calculated as 0.1437, 0.0862, 0.1014 TCO2 for microwave, ultrasound and ultra-high pressure extraction process, respectively. It was found that the ultrasonification process was most effective extraction method in processing the low quality ginsengs since this process generated the lowest CO2 emission while the highest low molecular ginsenosides were produced. This result could be caused by that the energy from ultrasonification most efficiently penetrates since the minimum energy from this process was about 146.2 kcal while C-O glycoside binding energy of ginsenosides was ca. 76.5 kcal, and the minimum energy from two other processes were lowere than this.
Resveratrol rice Iksan526 was developed by overexpession of T-DNA (RB::P-Ubi::RS::T-NOS::P-35S::PAT::T-35S::LB) in rice variety Dongjin. To confirm one locus insertion of T-DNAs, Mendelian genetic analysis was carried out on selection marker bar gene and objective RS gene separately by using a F2 population derived from a cross of Dongjin/Iksan526 (T6). A total of 450 four-leaf-old plants from F2 population were treated by 0.3% basta, and a phenotypic separation ratio of 3:1 (321 survival: 129 dead, p>0.90) complied with Mendelian inheritance indicating one locus insertion of bar gene. Genotypic separation was analyzed by using PCR with specific primers for 300 plants, which were selected from 321 survival plants after phenotypic separation. Results revealed a ratio 1:2 of homologous to heterozygous (92:208, p>0.90), which further confirmed one locus insertion of RS gene. In addition, comparison on agronomic traits and resveratrol contents between transgenic rice and the donor variety were launched to evaluate the phenotypic performance over multi-generations (years).