붕어의 발육 및 생식에 미치는 비소의 영향

남성숙,이철우,류지성,박응로,남규찬,류홍일,전성환,나진균,최덕일,박광식 한국환경독성학회 2001 환경독성보건학회지 Vol.16 No.2

To evaluate the arsenic effect of fish endocrine disruption, crucian carp (Carassius auratus) were treated with 0.5 mg/L and 3.0mg/L of As₂O₃ for 14 days and gonadal development was examined by histological analysis. In ovaries from female crucian carps exposed to 3.0mg/L, immature follicles and atretic follicles were appeared while various normal developmental stages of oocytes were shown in control group. Body weight and Gonadosomatic Index (GSI) of treated carp were also decreased compared to control group. However, no other significant histological changes in liver or kidney were shown in this exposure scheme, This means that reproductive organs are more sensitive than other organs and arsenic may exert endocrine disrupting effect through inhibiting the development of reproductive organ in fish.

복합용도지구의 유형구분과 계획특성 연구

오덕성,이응현 충남대학교 공공문제연구소 2006 공공문제와 정책 Vol.18 No.-

폴리아닐린을 이용한 전기변색소자의 제작 및 특성

오응주,이경민,민혜경,노성변,서정선 명지대학교 자연과학연구소 1995 자연과학논문집 Vol.12 No.-

ITO/폴리아닐린/고분자고체전해질/ITO구조의 전기변색소자가 제작되었다.IM p-toluenesulfonic acid 용액내에서 0.7V의 전압하에 potentiostaic method로 아닐린을 전기화학적으로 중합하여 salt form의 폴리아닐린을 ITO glass 위에 deposite시켰다.또한 화학적으로 합성한 base form의 폴리아닐린을 10? torr의 압력하에 진공승화법에 의해 ITO glass 위에 증착시켰다. PEI(polyethyleneimine)과 2-acrylamido-2-methyl-propanesulfonic acid 를 이용하여 고분자 고체전해질을 제조하였다. 제작된 ITO/polyaniline salt/고분자고체전해질/ITO 구조의 전기변색소자는 인가전압 -2.0V~+2.OV의 영역에서 무색에서 푸른색을 나타내었다.Potential pulse를 통하여 측정된 이들 변색소자의 cyvlic number 는 10? 이상으로 나타났고, 응답시간은 50ms로 생기는 전자전이를 통하여 색의 변화를 알 수 있었다. 또한 각각 변색물질로 폴리아닐린 salt 와 base를 사용하여 제작된 변색소자의 경우 I-V곡선은 counter 이온인 SO?-의 발생확률에 따라 다른 곡선을 나타내었다. Electrochromic devices(ECD) with ITO/polyaniline/polymer solid electrolyte /ITO structure were fabricated . In these devices both of poyaniline salt and base forms were deposited onto ITO conducting glass substrate by electrochemical and vacuum sublimation method, respectively, Polymer solid electrolye were prepared by the reaction of polyethyleneimine with 2-acrylamido-2-methyl-propanesulfonic acid . ECDs based on polyaniline salt showed color change from colirless to blue in the range of applied voltage of -2.OV ~+2.0V.Cyclic number and response time of these devices appear to be 10? and 50ms respectively. The color change which is relatd to teh electronic transition by the variation of electron density was observed from the UV/Vis. spectra measurement. I-V curves for ECDs based on polyaniline salt and base repectively shoe different behaviors due to the different degree of contribution of SO?- ion as a counterion for each case.

Pion-Nucleon Scattering in Phase Shift Analysis below 400 MeV/c

李應頀,金成度 서울교육대학교 과학교육연구소 1995 科學과 數學敎育 論文集 Vol.21 No.-

본 연구는 400 MeV/c 이하의 에너지 영역에서 위상이동분석(S-, P-, D-파)을 소개하고 그 물리적 의미 및 위상이동에 의한 파이온-핵자 산란단면적을 연구하였다. 이들 에너지 영역에서 π^+p 반응은 이용가능한 실험치와 좋은 일치를 보여 주고 있으나, π^-p 반응은 │p│?? 150 MeV/c보다 낮은 에너지에서 다소 차이를 보여 주었다. 본 연구의 결과로부터 π^-p 반응에서 나타나는 I=1/2에 대한 위상이동은 낮은 에너지 영역에서 더욱 정확한 분석을 요구한다. We have introduced pion-nucleon phase shifts(S-, P-, and D-wave), to study its physical properies, and to provide the cross sections of pion-nucleon scattering calculated using fitted phase shifts for energies below 400 MeV/c. In this energy region, we have found that the agreement is quite respectable for π^+p at all energies, but less good for π^-p below |q| ?? 150 MeV/c.

Di-2-ethylhexyl phthalate 처리 남아프리카산발톱개구리에서의 vitellogenin 발현

박응로,이철우,류지성,남성숙,전성환,나진균,최덕일,박광식 한국환경독성학회 2001 환경독성보건학회지 Vol.16 No.1

The estrogenic potency of di-2-ethylhexyl phthalate (DEHP) using reverse transcriptase-PCR response of liver vitellogenin mRNA in male African clawed frog (Xenopus laevis) was studied. Male frogs were injected with DEHP at dose of 300 ㎍/kg and 300 mg/kg body weight through the dorsal lymph sac. After 4 days, using suitable pair of RT-PCR primers, vitellogenin mRNA induction in the liver was measured and DEHP showed vitellogenin mRNA induction in only the group treated with 300 mg/kg. Any significant histological abnormalities by the exposure of DEHP was not shown in both testis and liver.

대구지역 범죄발생 실태 및 추이와 치안대책

이성식,최응렬 계명대학교 사회과학연구소 2000 한국사회과학연구 Vol.19 No.1

閑山·巨濟灣 굴, 진주담치 및 海水의 重金屬含量

黃奎喆,李應昊,金成晙 釜山水産大學校 1984 釜山水産大學 硏究報告 Vol.24 No.1

1982년 7월부터 12월까지 南海岸의 閑山·巨濟灣에서 양식되고 있는 굴 및 自生하고 있는 진주담치와 海水에 대한 重金屬(Hg, Cd, Cu, Pb 및 Zn) 含量을 調査하고 成長過程, 水深別 그리고 굴과 진주담치의 重金屬含量을 相互 比較하였다. 1. 海水에 있어 구리 含量은 대체로 表層이 5m層보다 높았고 그 平均값은 각각 5.0, 3.3ppb였으며, 水銀은 0.132, 0.137ppb로 表層과 5m層間에 差異가 거의 없었다. 2. 굴의 成長에 따른 重金屬含量은 대체로 아연과 구리는 增加하는 반면 카드뮴, 납 및 水銀은 특징적인 變化는 나타나지 않는다. 그리고 水深別(表層 및 5m層)굴의 重金屬含量은 아연과 구리에서 약간의 差異가 있을 뿐 다른 重金屬은 같은 수준이었다. 3. 閑山·巨濟灣에 있어 굴과 진주담치의 重金屬含量(1982年 10月 基準)은 각각 카드뮴 0.55, 0.21ppm, 구리 6.42, 0.66ppm, 납 0.69, 0.41ppm, 아연 101.6, 18.4ppm, 水銀0.009, 0.006ppm으로 굴이 진주담치보다 높았으며, 美國貝類衛生 7次 workshop 推薦暫定基準値인 카드뮴 1.5∼3.5ppm, 구리 42∼175ppm,납 2.0ppm, 아연 1,000∼2,000ppm, 水銀 0.2ppm에 比하여 낮은 값이었다. The quantitive analysis of heavy metals(Hg, Cd, Cu, Pb and Zn) in oyster, Crassostrea gigas, and blue mussel, Mytilus edulis, and growing water associated with hanging culture in Hansan-Geoje Bay on the south coast of Korea were conducted during the period of July to December in 1982. The content of heavy metals in shellfish by growth, water depth, and species were discussed. In sea water, copper content of surface water was in general highe than that of five meter depth to some extent with average of 5.0 and 3.3 ppb, respetively. There were little differences of mercury content between the two water depth, and averaged 0.132 and 0.137, respectively. Cadmium, lead and zinc were indeterminable. In oyster, the contents of copper and zinc by growth showed a trend of gradual increasing with increasing of meat weight, whereas there were little differences in cadmium, lead and mercury during the study period. And there were no differences between surface and five meter depth. The levels of heavy metal in oyster were consistently higher then that in blue mussel. Heavy metal content of both oyster and blue mussel in Hansan-Geoje Bay taking the results in October that it showed higher metal concentration in shellfish during the study period, were 0.55 and 0.21 ppm for cadmium, 6.42 and 0.66 and ppm for copper, 0.69 and 0.41 ppm for lead, 101.6 and 18.4 ppm for zinc and 0.09 and 0.006 ppm for mercury, respectively. They were much less than the alert levels for oyster proposed by the Chemical Task Force of U.S. FDA 7th National Shellfish Sanitation workshop in 1977 that were 1,000-2,000 ppm for zinc 42-175 ppm for copper, 1.5-3.5 ppm for cadmium, 2.0 ppm for lead and 0.2 ppm for mercury.

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.

A Watermarking Scheme for Mobile 3D Game Contents Based on Buyer-Seller Watermarking Protocol

Seong-Geun Kwon,Suk-Hwan Lee,Eung-Ju Lee,Ki-Ryong Kwon,Teak-Young Seong,Sung-Ho Bae 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7

This paper presents a watermarking method for copyright protection and illegal copy prevention of mobile 3D contents. The proposed method embeds copyright information and user's phone number into spatial domain and encryption domain of mobile animation data based on Buyer-Seller watermarking protocol. Furthermore, we insert user's operation key so that only authorized user can play 3D animation game in mobile device.

Purification of Functional Oil from Liver of Skate as Skate By-product

Eung-seong Yu(유응성),Jae-woo Lee,Ji-young Yang 한국수산과학회 양식분과 2018 한국수산과학회 양식분과 학술대회 Vol.2018 No.5