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Ha, Yeong Su,Kim, Kye-Ryung,Cho, Yong-Sub,Choe, Kyumin,Kang, Chaewon 대한방사성의약품학회 2020 Journal of radiopharmaceuticals and molecular prob Vol.6 No.1
Accelerator mass spectrometry (AMS) is a powerful detection technique with the exquisite sensitivity and high precision compared with other traditional analytical techniques. Accelerator mass spectrometry can be widely applied in the technique of radiocarbon dating in the fields of archeology, geology and oceanography. The ability of accelerator mass spectrometry to measure rare <sup>14</sup>C concentrations in microgram and even sub-microgram amounts suggests that extension of <sup>14</sup>C-accelerator mass spectrometry to biomedical field is a natural and attractive application of the technology. Drug development processes are costly, risky, and time consuming. However, the use of <sup>14</sup>C-accelerator mass spectrometry allows absorption, distribution, metabolism and excretion (ADME) studies easier to understand pharmacokinetics of drug candidates. Over the last few decades, accelerator mass spectrometry and its applications to preclinical/clinical trials have significantly increased. For accelerator mass spectrometry analysis of biological samples, graphitization processes of samples are important. In this paper, we present a detailed sample preparation procedure to apply to graphitization of biological samples for accelerator mass spectrometry.
롱 데이타의 효율적 처리를 위한 KORED / STORM의 버퍼 관리기
조영섭(Yeong-Sub Cho),김재홍(Jae-Hong Kim),배해영(Hae-Young Bae) 한국정보과학회 1994 한국정보과학회 학술발표논문집 Vol.21 No.1
비정형 특성을 갖는 롱 데이타에 대한 버퍼의 할당과 교체 정책에 있어서 일반적인 저장 관리자의 버퍼 관리기는 스몰 데이타와 롱 데이타를 구분없이 함께 관리한다. 따라서 버퍼의 할당과 교체시 롱 데이타의 특성을 고려하지 않기 때문에, 롱 데이타는 산재된 버퍼에 할당되고 많은 수의 스몰 데이타 버퍼들을 교체하게 되므로써 시스템의 성능을 저하시킨다. 본 연구에서는 제안된 KORED/STORM의 버퍼 관리기는 위의 문제를 해결하기 위해서 버퍼 영역을 롱 데이타 영역과 스몰 데이타 영역으로 구분하여 롱 데이타 버퍼 영역을 관리하는 할당 정책을 제안하고 교체 정책으로 전역적인 LRU와 크기별 LRU를 제안한다.
가변 크기 버퍼를 이용한 멀티미디어 데이타 버퍼 관리 기법
조영섭(Cho Yeong Sub),김재홍(Kim Jae Hong),배해영(Bae Hae Young) 한국정보처리학회 1996 정보처리학회논문지 Vol.3 No.6
As there has been much demands for processing multimedia data, a storage manger for multimedia data makes much effects on system performance. Because the size of multimedia data is usually very large, disk I/O for the data consumes much time and causes the system performance to be decreased. Therefore, it makes a better effect on system performance that a multimedia data storage manger decreases its I/O by the buffer management of multimedia data. This paper proposes a buffer management technique which allocates the buffer to be equal to its corresponding segment which consists of physically continuous disk page set and is disk management unit for multimedia data in many multimedia data storage manager. As the size of buffer varies, it also proposes a buffer replacement policy which consider not only reference behavior of buffer but also buffer size. The proposed multimedia data buffer management technique is implemented in KORED/storm which is a storage for multimedia data.
RNA-Seq for Gene Expression Profiling of Human Necrotizing Enterocolitis: a Pilot Study
Jung, Kyuwhan,Koh, InSong,Kim, Jeong-Hyun,Cheong, Hyun Sub,Park, Taejin,Nam, So Hyun,Jung, Soo-Min,Sio, Cherry Ann,Kim, Su Yeong,Jung, Euiseok,Lee, Byoungkook,Kim, Hye-Rim,Shin, Eun,Jung, Sung-Eun,Cho The Korean Academy of Medical Sciences 2017 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.32 No.5
<P>Necrotizing enterocolitis (NEC) characterized by inflammatory intestinal necrosis is a major cause of mortality and morbidity in newborns. Deep RNA sequencing (RNA-Seq) has recently emerged as a powerful technology enabling better quantification of gene expression than microarrays with a lower background signal. A total of 10 transcriptomes from 5 pairs of NEC lesions and adjacent normal tissues obtained from preterm infants with NEC were analyzed. As a result, a total of 65 genes (57 down-regulated and 8 up-regulated) revealed significantly different expression levels in the NEC lesion compared to the adjacent normal region, based on a significance at fold change ≥ 1.5 and <I>P</I> ≤ 0.05. The most significant gene, <I>DPF3</I> (<I>P</I> < 0.001), has recently been reported to have differential expressions in colon segments. Our gene ontology analysis between NEC lesion and adjacent normal tissues showed that down-regulated genes were included in nervous system development with the most significance (<I>P</I> = 9.3 × 10<SUP>−7</SUP>; <I>P<SUB>corr</SUB></I> = 0.0003). In further pathway analysis using Pathway Express based on the Kyoto Encyclopedia of Genes and Genomes (KEGG) database, genes involved in thyroid cancer and axon guidance were predicted to be associated with different expression (<I>P<SUB>corr</SUB></I> = 0.008 and 0.020, respectively). Although further replications using a larger sample size and functional evaluations are needed, our results suggest that altered gene expression and the genes' involved functional pathways and categories may provide insight into NEC development and aid in future research.</P>
개심술환자에서 Fibrinogen Degradation Products 와 Fibrin Degradation Products 농도의 변화
조강희,우성,박성섭,류승철,구영권 대한마취과학회 1993 Korean Journal of Anesthesiology Vol.26 No.3
There were many researches, which qualitative or quantitative assays were performed about fibrinolysis and the degree of activation of coagulation system. Authors measured fibrinogen degradation products(FbDP) and fibrin degradation products(FbDP) by monoclonal enzymeimmunoassay, instead of polyclonal method in 12 cases of cardiopulmonary bypass(CPB). 1) The increase of FgDP after sternotomy is verifying the significant fibrino(geno) lysis occured by stimulation of sternotomy. 2) By the result that FgDP was significantly increased compared with FbDP, primary fibrinogenolysis is more important phenomenon than secondary fibrinolysis during CPB. 3) FbDP and FgDP were most significantly increased immediately before the end of CPB and after CPB. 4) Increased FgDP was decreased after CPB but FbDP was still elevated 5 hours after CPB. According to the above results, CPB induced primary fibrinogenolysis and secondary fibrinolysis in open heart surgery.
Extended latex proteome analysis deciphers additional roles of the lettuce laticifer
Cho, Won-Kyong,Chen, Xiong-Yan,Rim, Yeong-Gil,Chu, Hyo-Sub,Jo, Yeon-Hwa,Kim, Su-Wha,Park, Zee-Yong,Kim, Jae-Yean The Korean Society of Plant Biotechnology 2010 Plant biotechnology reports Vol.4 No.4
Lettuce is an economically important leafy vegetable that accumulates a milk-like sap called latex in the laticifer. Previously, we conducted a large-scale lettuce latex proteomic analysis. However, the identified proteins were obtained only from lettuce ESTs and proteins deposited in NCBI databases. To extend the number of known latex proteins, we carried out an analysis identifying 302 additional proteins that were matched to the NCBI non-redundant protein database. Interestingly, the newly identified proteins were not recovered from lettuce EST and protein databases, indicating the usefulness of this hetero system in MudPIT analysis. Gene ontology studies revealed that the newly identified latex proteins are involved in many processes, including many metabolic pathways, binding functions, stress responses, developmental processes, protein metabolism, transport and signal transduction. Application of the non-redundant plant protein database led to the identification of an increased number of latex proteins. These newly identified latex proteins provide a rich source of information for laticifer research.