표피 줄기세포

최지호 大韓皮膚硏究學會 2003 大韓皮膚硏究學會誌 Vol.10 No.4

문화요인이 국가간 회계정보 공시수준에 미치는 영향

崔炳皓,張志仁 韓日經商學會 1999 韓日經商論集 Vol.17 No.-

The culture has been affected by environmental factors, has grown and has progressed. Because of various international cultural differences, the social and cultural values affect accounting values, and finally a channel and proper degree of accounting practices. The purpose of this study is to examine empirically the determinants of the level of accounting disclosure in international context. More specipically the study analyzes the effects of cultural and economic factors on the level of accounting information disclosures in 38 countries based on Gray(1983)'s accounting value model using accounting disclosures indices published by CIFAR. For an empirical analysis, the study uses Hofstede,s five indices of cultural values and two economic variables as independent variables, and the disclosure indices of CIFAR as dependent variables. Five cultural variables are individualism, power distance, uncertainty avoidance, masculinity, and long-term orientation, and two economic variables being the size of the capital market and the degree of overseas exposure of the national economy. For the univariate analysis, the study uses the t-Test and the Mann-Whitney U Test for investigating the effects of each independent variables. From the results of this analysis, statistically significant factors are individualism, power distance, uncertainty avoidance among cultual variables, although masculinity and long-term orientation are not. Economic variables are generally significant. For the multivariate analysis, multiple regression are employed. The result of multiple regression using cultural variables corresponds with that of univariate analysis in other cultural variables except power distance. The result of multiple regression using economic variables doesn't corresponds with that of univariate analysis in model. The size of capital market and the degree of overseas exposure of the national economy(1) appear to be contrary to the expected relationship in Model. It is estimated because of the correlation among independent variables that the result of univariate analysis doesn't correspond with that of multivariate analysis.

Paraquat 처리에 의한 Bacillus megaterium의 Superoxide dismutase 활성저해

최경호,김춘숙,유지선 대구효성가톨릭대학교 1993 연구논문집 Vol.46 No.1

The effect of paraquat (1, 1'-dimethyl-4,4'-dipyridilium dichloride) treatment on activity of microbial superoxide dismutase(SOD), a key enzyme which protects the organism from toxicity of oxygen, was investigated. Exponentially growing cells of Bαcillus megaterium(ATCC 1987) were treated with 1.OmM paraquat by cultivation in the concomitant presence of the paraquat. Paraquat-treated culture showed a linear decrease in turbidity, cellular weight and vidable cell counts while those of control culture showed a linear increase until nine hours of cultivation. After nine hours of cultivation, turbidity(0.68), dry cell weight(1.19mg/ml) and viable cell counts(5.0×19?cells/ml) of the treated culture reached to approximately 62%, 83% and 4% of those of initial, respectively. Paraquat-treated culture(in vivo) showed a SOD activity of 0.68unit/ml and a specific activity of 1.79unit/mg protein after nine hours of cultivation. These values were equel to 22% and 44% of the control culture, respectively. When enzymes were liberated from sonic-disruptured cells(in vitro) by orderly using of sodium phosphate buffer, buffered lysoyme and triton X-100, paraguat-treated culture showed an increased activity of the engyme, while control culture did not show any significant increase of the enzyme activity. Activities of SOD drastically decreased as increasing the paraquat concentration in the crude enzyme lysate, although protein content was not significantly varied. The lysate dissolved 1.0mM paraquat showed a specific activity of SOD decreased to 45% of control lysate. It was noticed that the decreasing rate was approximately similar to that of the lysate prepared from paraquat-treated cells.

전력선 통신에 이용되는 결합 캐패시터의 설계, 시뮬레이션 및 제작

김병호,최용호,김지균,이헌용 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-

Abstract - The high-speed fiber-optic networks rapidly has come into wide use and in the process of use because the last developing acceleration of the telecommunication technology but, they must need the high foundation cost therefore a heavily populated district was suitable. On the order hand a lightly populated district incongruent. Powerline communications merit attention because the lower foundation cost for using of the existing powerlines. The coupling Circuits are High pass filter and blocking high-voltage. The coupling circuits consist of capacitance so called the coupling capacitor. In the thesis the coupling capacitor try design, simulation and fabrication. After studying a characteristic of frequency in the temperature that the fabrication capacitor study conformability of the coupling capacitors.

대장통과시간 측정용 방사선 비투과성 표지자인 KolomarkTM의 국내 개발

김지은,이풍렬,김영호,성인경,심상군,김재준,고광철,최규완,임효근,서수원 대한소화관운동학회 1999 Journal of Neurogastroenterology and Motility (JNM Vol.5 No.2

개에서 Chiari-like malformation에 의한 척수공동수증과 수두증의 발생 1례

신영지,박정희,김영실,최호정,이영원,정성목 忠南大學校 獸醫科大學 動物醫科學硏究所 2005 動物醫科學硏究誌 Vol.13 No.-

A 2.5㎏, 11-year old, intact female mixed breed dog with 1 year history of sporadic seizure was referred to the Veterinary Medical Teaching Hospital of Chungnam National University. There were no significant finding in CBC and serum chemistry. Based on X-ray, CT scan and MRI, it was diagnosed as syringohydromyelia and hydrocephalus caused by Chiari-like mlaformation. Prednisolone, furosemide and phenobarbital was administered orally. Depend on the number and severity of seizure, the dose of phenobarbital was adjusted. Seizure episode was reduced.

국내 Fabry disease 환자의 a-Galatosidase A 유전자 돌연변이 검색

박기범,최지혜,강윤성,김선미,정향민,문영준,이광호 中央大學校 基礎科學硏究所 2001 基礎科學硏究所 論文集 Vol.15 No.-

Fabry disease(FD) is an X-linked recessive lysosomal disorder caused by a deficiency of a-galactosidase A(a-Gal A), localized at Xq22. Besides onset of pain and paresthesias in the extremities, FD was diagnosed by absence of a-Gal A activity. In this experiment the a-Gal A activity of Korean FD patients was spectrometrically analysed using an artificial substate, 4-Mrthylumbellifery1-a-D-galactoside. As expected, no a-Gal A activity was detected in lymphocytes and lymphoblastoid cells from FD patients. To screen the mutation in their a-Gal A genes, we performed single strand conformation polymorphism(SSCP) and PCR-direct sequencing form seven a-Gal A exons. The nonsense mutation was identified both in classically affected hemyzygotes and a heterozygote. They showed the C to T transition at nucleotide number 11,002, resulting in a arginine-to-stop(R342X). This result will be applicable for pre- and neonatal detection of FD and to define the genotype/phenotype correlation.

Tufted Angioma와 유사한 소견을 보인 화농성 육아종

장경애,최정철,최지호,성경제,문기찬,고재경 대한피부과학회 1999 대한피부과학회지 Vol.37 No.6

Tufted angiomas are rare slowly progressive vascular lesions found typically in children and young adults, usually involving the trunk and neck. Microscopically, groups of capillary tufts, many uncanalized, were found dispersed at various levels in the dermis. Some authors regarded tufted angioma as a member of lobular capillary hemangiomas. We describe a pyogenic granuloma mimicking acquired tufted angioma on the lip in a 59-year-old woman. We suggest that a term lobular capillary hemangioma$quot; may be preferable in this case.

Epstein-Barr virus(EBV)와 연관된 Nasal type T/Natural Killer(NK)-cell lymphoma 1예

지두현,최지호,성경제,문기찬,고재경 울산대학교 의과대학 1996 울산의대학술지 Vol.5 No.1

Nasal type T/NK-cell lymphoma는 병리조직학적으로 응고성 괴사가 동반된 혈관중심성 침윤을 특징으로하며 T-cell과 NK-cell 항원을 모두 표현하는 면역조직화학염색 소견을 보이는 매우 드문 피부 림프종으로서 EBV와의 연관성이 흔히 보고되고있다. 저자들은 42세 여자에서 발생한, 전신적인 홍반성 구진, 판, 결절의 임상양상을 보였으며 피부 병변에서의 EBV-encoded RNA(EBER)에 대한 in situ hybridization상 양성소견을 보였고 전산화단층촬영, 골주사, 갈륨주사 등의 검사상 비강, 위장관 및 다른 내부장기 침범소견은 보이지 않아서 피부에만 국한된 경우로 사료되는 nasal type T/NK-cell lymphoma 1예를 보고하는 바이다.

열공형과 비열공형 피질하 혈관성 치매에서 위험인자의 차이에 관한 비교 연구

배희준,정지향,유경호,나덕렬,김상윤,최경규,양동원,손의주,이상도,김재우,박경원,김응규,이재홍,박미영,한일우,함동석,최문성,하충건,최성혜,이애영,이병철,한설희 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.2

Backgrounds and Objectives: Vascular dementia is a group of dementing disoders arising from various stroke syndrome. Among these. subcortical ischemic vascular dementia (SIVD) is regarded as a relatively distinct clinical entity. However, MRI patterns of SIVD are not homogenous. In some patients, lacunes are dominant, and in others, subcortical white matter changes are. This study was designed to compare risk factor profiles between SIVD with and without multiple lacunes. Methods: We divided 47 subjects (22 males, mean age. 68 years) recruited from VADAPET (Multicenter Trial For Evaluation Of The Changes In the PET Images Of Subcortical Vascular Dementia Patient) study into two groups one with more than 5 lacunes in deep gray matter (lacune group) and the other with 5 or less(non-lacune group) Clinical characteristics and laboratory findings of two groups were compared. Results: Nineteen of 47 patients (40%) belonged to the lacune group. The lacune and non-lacune groups d d not differ in the following variables: age, hypertension, diabetes mellitus, hyperlipidemia heart disease, history of stroke or TIA, history of trauma or major surgery, family history of hypertension stroke, or dementia, age at diagnosis of dementia, body mass index, white blood cell count, ESR, CRP, fibrinogen, hemoglobin A1C, total cholesterol. LDL cholesterol creatinine, proteinuria, glucosuria, and microhematuria. However, male sex, smoking alcohol. hemoglobin, and HDL cholesterol were possibly associated more with lacune group SIVD than with non-lacune group (p<0 1) Multivariate analyses revealed that smoking, hemoglobin, and HDL cholesterol were independent predictors of SIVD with multiple lacunes Conclusion: Our study suggests that SIVD with multiple lacunes may be significantly different in smoking habits hemoglobin, and HDL cholesterol from SIVD without multiple lacunes.