http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
沈永喆,李浚源 弘益大學校 科學技術硏究所 1998 科學技術硏究論文集 Vol.9 No.1
Due to the advances in the computer network and communication technology, computers are populaurizing in every sector in our society and these computers are connected by networks such as the Internet. Although this environment facilitates people to share information and resources, it also provides hacker with posibility to steal valuable information and damage computer systems and networks belonging to other people. To remedy this problem, we develop many tools which capture network packets and analyze and/store them, but the problem with these tools is that it is difficult to add or change their functionality and connect them to other security tools, In this paper we explain a general purpose packet capturing tool which not only captures and analyzes/blocks packets. but can be connected to other security tools easily. We explain the architecture and the packet filtering specification language for this tool.
쌍각 자궁과 동측의 골반성 발육부전신이 동반된 질개구 이소성 단일요관 1례
신준영,박성재,변동원,이상훈,정호준,심봉석 梨花女子大學校 醫科大學 醫科學硏究所 2002 EMJ (Ewha medical journal) Vol.25 No.2
A case of a female subject with a unilateral vaginal ectopic ureter associated with a single system, ipsilateral hypoplastic pelvic kidney and bicornuate uterus is reported. Although there are many reports of concomitant urinary and reproductive system malformations, a review of the literature shows these unique associations in the same patient to be extremely rare. This malformation is not limited to any combination of abnormal development of the mesonephric(wolffian) and paramesonephric(mllerian) ducts in the development of the urogenital system. Embryological aspects as well as clinical presentation, diagndstic approach and treatment applicable to this case are discussed.
Shim, Won Joon,Thomposon, Richard C Springer-Verlag 2015 Archives of environmental contamination and toxico Vol.69 No.3
<P>Since their ubiquity in the ocean and marine organisms was first revealed, global concern about microplastics has grown considerably. The North Pacific Ocean and the adjacent marginal seas have high levels of microplastic contamination compared with the global average. This special issue on microplastics was organized by the North Pacific Marine Science Organization to share information on microplastic pollution in the North Pacific region. The special issue highlights high levels of contamination in the North Pacific both on shorelines and at the sea surface. Particularly high levels of contamination were reported on the western and southern coasts of Korea. Sources, including sewage discharge, aquaculture, and shipyards, were implicated. With the direction and energy of surface winds and currents have an important influence on shoreline patterns of distribution. The special issue also demonstrates potential for ingestion of microplastic by small planktonic organisms at the base of the food chain. A wide range of chemicals are associated with plastic debris and concerns are expressed about the potential for these chemicals to transfer to biota upon ingestion. As an introduction to the topic, this paper provides a brief background on microplastic contamination, highlights some key research gaps, and summarizes findings from the articles published in this issue.</P>
Won Joon Shim,홍상희,오재룡,임운혁,Donghao Li,Narayanan Kannan 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.4
Measurement of toxicologically relevant polychlorinated biphenyl (PCB) congeners such as non-ortho (IUPAC#) 77, 81, 126, 169 and mono-ortho 105, 114, 118, 123, 156, 157, 189 and di-ortho 170, 180 and polybrominated diphenyl ethers (PBDEs) such as 47, 66, 85, 99, 100, 138, 153, 154 in environmental samples become almost mandatory in several countries now. However, most of the available methods involve expensive instrumentations such as HRGC-HRMS or ECNI-LRMS, apart from expensive extraction and clean-up (with large volume of solvents) steps. A method has been devised combining the analytical separation power of PYE [2-(1-pyrenyl)ethyldimethysilylated silica] column HPLC and high-resolution gas chromatographic techniques including micro-electron capture detection (ECD) and two dimensional gas chromatograpy-ECD techniques to determine these eco-toxic substances at parts-per-trillion (ppt) levels. This combination resolves co-elution of congeners that occur in disproportionate ratios (e.g. CB-110 and -77) and allows accurate congener-specific determination of target compounds. This method is cost effective as it requires only hexane, that in small quantities (10 mL) and GC-ECD. The elution and analysis time are optimized to less man hours. This method is effectively utilized in the analysis of co-planar PCBs and PBDEs from archived solvent extracts of samples previously analyzed for pesticides and PCBs. Structure based separation of contaminant classes improves GC-ECD determination at ppt levels.
Historical Trend of Butyltin Contamination in Sediment Cores from the Coastal Environments of Korea
Shim, Won-Joon,Yim, Un-Hyuk,Kim, Nam-Sook,Hong, Sang-Hee,Oh, Jae-Ryoung The Korean Association of Ocean Science and Techno 2004 Journal of Ocean Science and Technology Vol.1 No.1
In the present study, butyltin compounds in sediment cores were quantitatively determined to study vertical distribution of these compounds along the coast of Korea. Butyltins in sediment core were analyzed to investigate the trend of past organotin contamination in Korea and to estimate the half-life of TBT in sediments. Butyltin compounds were detected from the entire sediment core samples at 14 stations. TBT, and its degradation products, dibutyltin (DBT) and monobutyltin (MBT), concentrations ranged 〈1-46100, 〈1-4320 and 〈2-2460 ng Sn/g on a dry weigt basis, respectively. The highest butyltin concentrations were found in front of the repairing shipyard in Ulsan Bay at which total butyltin concentration reached up to 51620 ng Sn/g. Each butyltin compound showed significant correlation among tri-, di- and mono-substituted compounds. Sedimentation rates were estimated based on $^{210}$ Pb activity profiles. The half-lives of TBT in eight undisturbed sediment cores were calculated from the estimated sediment age and TBT concentration profiles. The half-lives for TBT ranged from 1.8 to 9.9 years and the mean value was 4.9 year. Relatively longer half-lives were obtained from cores Ulsan Bay (9.9 yr), Kamak Bay (8.3 yr) and Dangdong Bay (6.3 yr). The half-lives of the other cores were less than 5 yr. Butyltin concentrations were high enough to affect marine organisms near harbor and shipyard, and vertical distribution of butyltin compounds in sediment showed active use of them in Korean peninsula for the past decades. The half-lives of TBT in a year scale provide a concern on persistence of this compound in marine sediment even after world-wide total ban on use of TBT.