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치주인대섬유모세포의 분화과정에서 아미노산 수송계 L의 발현
황규영,김도경,김창현,장현선,박주철,최성미,김병옥,Hwang, Kyu-Young,Kim, Do-Kyung,Kim, Chang-Hyun,Jang, Hyun-Seon,Park, Joo-Cheol,Choi, Seong-Mi,Kim, Byung-Ock 대한치주과학회 2006 Journal of Periodontal & Implant Science Vol.36 No.3
The periodontium is a topographically complex organ consisting of epithelial tissue, soft and mineralized tissues. Structures comprising the periodontium include the gingiva, periodontal ligament (PDL) , cementum and the alveolar bone. The molecular mechanism of differentiation in PDL fibroblast cells remain unclear. Amino acid transporters play an important role in supplying nutrition to normal and cancer cells and for cell proliferation. Amino acid transport system L is a major nutrient transport system responsible for the Na+-independent transport of neutral amino acids including several essential amino acids. The system L is divided into two major subgroups, the L-type amino acid transporter 1 (LAT1) and the L-type amino acid transporter 2 (LAT2). In this study, the expression pattern of amino acid transport system L was, therefore, investigated in the differentiation of PDL fibroblast cells. To determine the expression level of amino acid transport system L participating in intracellular transport of amino acids in the differentiation of PDL fibroblast cells, it was examined by RT-PCR, observation of cell morphology, Alizaline red-S staining and uptake analysis after inducing experimental differentiation in PDL fibroblast cells isolated from mouse molar teeth. The results are as follows. 1. The LAT1 mRNA was expressed in the early stage of PDL fibroblast cell differentiation. This expression level was gradually reduced by differentiation- inducing time and it was not observed after the late stage. 2. The expression level of LAT2 mRNA was increased in time-dependent manner during differentiation induction of PDL fibroblast cells. 3. There was no changes in. the expression level of 4F2hc mRNA, the cofactor of LAT1 and LAT2, during differentiation of PDL fibroblast cells. 4. The expression level of ALP mRNA was gradually increased and the expression level of Col I mRNA was decreased during differentiation of PDL fibroblast cells. 5. The L-leucine transport was reduced by time from the early stage to the late stage in PDL fibroblast cell differentiation. As the results, it is considered that among neutral ammo acid transport system L in differentiation of PDL fibroblast cells, the LATl has a key role in cell proliferation in the early stage of cell differentiation and the LAT2 has an important role in the late stage of cell differentiation for providing cells with neutral amino acids including several essential amino acids.
황규영,Hwang, Gyu-Yeong 한국데이터베이스진흥원 1997 디지털콘텐츠 Vol.10 No.-
국내 OODBMS 및 ORDBMS 제품들이 해외 유명 제품들과 경쟁할 수 있는 방안이 무엇인가. 지난 7여년간 OODBMS 개발 프로젝트를 수행한 결과로 개발된 오디세우스 객체지향 멀티미디어 DBMS의 사례를 예시함으로써 국내에서 OODBMS 또는 ORDBMS를 개발하고자 하는 모든사람들에게 조금이라도 도움이 되었으면 한다.
황규영(Gyu Young Hwang),홍창목(Chang Mok Hong) 한국세법학회 2010 조세법연구 Vol.16 No.2
현행 소득세법상 비과세근로소득에 대한 규정은 소득세법 제12조 제3호에 언급되어 있다. 이러한 비과세근로소득 중 사회보장보험(국민건강보험, 고용보험, 노인장기요양보험)의 사용자 부담금과 각종 연금법상 사용자 부담금은 본질상 근로소득에 해당하기 보다는 법에 따라 사용자가 부담하는 공과금 또는 근로자에 대한 연금급여의 선급에 해당한다. 그러므로 이들 항목은 비과세근로소득이 아니라 근로소득에서 제외하는 항목으로 규정되어야 타당하다. 법인세법과 달리 소득을 개별적으로 구분하고 이에 대하여 별도의 계산구조를 갖추고 있는 소득세법의 논리구조를 고려할 경우, 비과세근로소득에 대한 이러한 불명확한 구분은 세법규정의 논리적인 정합성을 감소시키고 있다. 더욱이 이들 항목과 연계하여 비과세를 판단하는 소득항목인 생산직근로자의 연장근무수당에도 영향을 미쳐서 그 비과세 여부의 판단이 달라지는 문제점을 발생시키고 있다. 이러한 문제점을 해소하기 위해서는 사회보장보험 등의 사용자 부담금을 비과세근로 소득이 아닌 근로소득에서 제외하는 소득으로 재분류할 필요가 있고, 조세법률주의에 입각한 법적 안정성을 고려할 경우 근로소득에서 제외하는 소득에 대한 규정을 현행 소득세법 시행령에서 모법인 소득세법으로 이관할 필요성이 있는 것으로 분석되었다. The existing provision on the tax-free earned income is described at Article 12, Number 3 of Income Tax Law. Among these tax-free earned income, the employer contributions on social security and pension essentially correspond to utility bills or to pension payments-in-advance rather than earned income. Therefore these current prescription about tax-free earned income should be enacted as an exclusion items from earned income. Income Tax Law, which itemizes the income and provides different calculation scheme per each income, has a different logical structure in contrast with Corporate Tax Law. Therefore these unclear income classification decreases the logical matching of Income Tax Law. Futhermore, they cause the confusion in judging whether the manufacturing worker's overtime pay is tax-free or not. In order to solve these shortcoming, it is necessary to reclassify the employer contributions on social security and pension as an exclusion items of earned income. Considering legal stability based on tax legalism, it is necessary to alterate the provision about exclusion items of earned income from Income Tax Enforcement Ordinance to Income Tax Law.
황규영(Hwang Gyu-Young) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.3
The purpose of this study was to examine if there is dependence between professional golfer's scores on consecutive rounds within tournaments. This study involved golfers who played in 2007 on the Korea Professional Golfers' Association Tour (KPGA Tour, n=934), Korea Ladies Professional Golfers' Association Tour (KLPGA, n=1,064), U.S. Ladies Professional Golfers' Association Tour (LPGA, n=1,735), and Champions Tour (n=1,988). The results showed that the mean correlations between golfers' scores on consecutive rounds within four round tournaments for players on the KPGA Tour (r=.11, p<.01) and LPGA(r=.12, p<.01) were significant but weak and of little practical importance. There was a small correlation (r=.21, p<.01) between scores on consecutive rounds within four round tournaments for players on Champions Tour. The results also showed that the mean correlations between golfers' scores on consecutive rounds within three round tournaments for players on KLPGA Tour (r=.30, p<.01) and Champions Tour (r=.31, p<.01) were moderate while the mean correlation for players on LPGA Tour (r=.02, p<.01) was negligible. The results suggested that the greater ranges of players' skill on KLPGA Tour and Champions Tour may influence the higher correlation of golf scores on consecutive rounds.