유우의 제4위전위증에 관한 연구

이경진,김태종,장경진,Lee Kyung-Jin,Kim Tae-Jong,Chung Kyung-Jin 대한수의사회 1984 대한수의사회지 Vol.20 No.4

The occurrence of left displacement of the abomasum (LDA) were studied in 32 dairy cows of surrounding pastures in Gim-po contry of Kyung-Gi Do through year. The results observed were as follows; 1. The rate of occurrence by LDA were the most in the first

서울의 PPNG 발생 빈도(1991-1992)

김재홍,윤기범,박평원,김영진,전경민,김영태,김중환,곽호,구상완,송민석,유옥,지혜구,김동원,문상은,박영립,정승호,성범진,성순제,엄주용,황정열,이기홍,이주협,전태진 대한화학요법학회 1994 대한화학요법학회지 Vol.12 No.1

The prevalence of PPNG among pretreated gonorrhea cases isolated at the STD clinic of Choong-Ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1991, 123 strains of N.gonorrhoeae were isolated, among which 58(47.1%) were PPNG. In 1992, 98 starains of N.gonorrhoeae were isolated, among which 51(52.0%) were PPNG. In all, 109(49.3%) strains were found to be PPNG among 221 strains isolated between 1991-1992. The prevalence of PPNG in Seoul showed increased tendency till 1989, thereafter, it has been stationary or slightly decreasing.

발모제가 발모효과에 미치는 영향에 관한 연구

최경임,이진태,안봉전,최은영,박찬익 경산대학교 생명자원개발연구소 2002 생명자원과 산업 Vol.6 No.-

지금까지의 발모관리는 의학적인 차원에서 원형탈모, 남성형 탈모증 및 약제에 의한 병리학적인 연구가 있었으나 미용적인 관리에 대한 연구가 거의 없었다. 따라서 본 논문에서는 약품을 사용하지 않고 순수한 발모촉진 화장품과 두피관리 프로그램을 중심으로 발모관리를 통해 탈모개선 효과를 비교검토하였다. 탈모자를 여러 그룹으로 선발하고 발모제를 달리 처방하여 모발의 굵기, SEM 촬영, 수분측정, 정상인의 모발상태와 탈모자의 모발상태를 TEM 촬영하여 비교 분석하였다. 먼저 두피관리 전과 후의 수분함량의 차이는 평균 16% 상승하였다. 발두께 비교실험에서는 정상모에 비해 탈모자의 모발이 최대 38.6%가 작은 것으로 나타났으며, 모유두와 모간의 촬영사진에서는 탈모자의 모유두는 덜 발달되어 있었고, 변형된 모유두 형태가 많았다. 전자현미경을 통한 모표피의 SEM촬영에서는 탈모자나 정상모나 표면적으로 큰 차이는 없었다. 오히려 탈모자의 경우에는 모발이 약하고 건강하지 못하기 때문에 화학적인 처방을 하는 염색이나 펌 등을 하지 않아서 모발의 큐티클 층은 정상인의 모발보다 건강한 상태로 보였다. 두피측정에서는 관리 후 A, B, C 군의 비교에서 세 그룹 모두 두피의 현저한 개선효과를 보였다. 육모제를 사용한 A, B, Group과 영양제를 사용하지 않고 스캘링과 관리를 한 C군 모두 발모효과가 있었으며, 두피관리를 전혀 하지 않는 D군은 발모효과나 두피의 개선효과는 전혀 없었다. 전자 현미경을 통한 모발의 단면 촬영에서는 정상모발이 탈모자의 모발보다 피질이 부드럽고 풍성하게 잘 형성되어 있었다. 탈모자의 경우는 매우 심각한 고민거리인데 본 실험의 결과 가장 효과적인 발모 관리는 육모제로 두피의 혈액순환을 도와주고 평소생활에서 Brushing으로 모공이 막히지 않도록 꾸준한 손질을 함으로써 발모 및 두피개선이 될 수 있다는 것을 확인할 수 있었다. Twenty working people from 30s to 50s whose hairs were in the process of losing were selected for this study. They were divided into four groups as A, B, C and D. Their hairs were sampled to compare the thickness of the hairs through a optical microscope. Using hair care products from two marketing companies, once a week, Group A and B were treated scalp scaling and steam treatment during ten minutes. After applying vitamin cream the scalp was examined using a bio-beam every 5 minutes. Group C did not receive any vitamin cream but had the same treatment as A and B. Group D used no vitamin cream and receives no treatment. The results were as follows: In Comparison losing hair surface with healthy hair surface by electronic microscope, losing hair took place when the scalp has keratin or too much fat. After comparing the amount of moisture before and after care by a moisture measurement instrument, the amount of moisture has been outstandingly increased. As a result of observing hair root and hair shaft, hair root appeared to be less developed than healthy hair. These results showed that hair care is need to be constantly research and illuminate with regard to the proper care.

데치는 시간에 따른 침투성 및 비침투성 농약 처리 엽채류의 비타민 및 무기질의 함량 변화

전혜경,안태현,홍정진 한국조리과학회 2005 한국식품조리과학회지 Vol.21 No.1

The present study was conducted to investigate effect of blanching time on changes in vitamin and mineral contents in leafy vegetables treated by different pesticides. Vitamin A content of fresh leafy vegetables was high whorled mallow > chard > spinach hi order and vitamin C content of those was high spinach > whorled mallow > chard in order. Vitamin A and C contents of leafy vegetables treated by non-systemic pesticide were higher than those of leafy vegetables treated by systemic pesticide. Changes in vitamin A and C contents of leafy vegetables treated by systemic pesticide and non-systemic pesticide showed a similar trend. Vitamin A content significantly increased, while vitamin C content significantly decreased by conventional blanching. Changes in mineral contents in leafy vegetables treated by systemic pesticide and non-systemic pesticide showed a similar tread. Upon conventional blanching, Mg in spinach, Mg and Ca in chard and whorled mallow slightly increased, while K in all leafy vegetables remarkably decreased, and Se in spinach slightly decreased and Se in other vegetables remarkably decreased. On the other hand, Na, P, Fe, Cu and Zn in all leafy vegetables slightly decreased or did not show any change.

초등학교 과학 수업에서 개념도 활용의 효과

강석진,이유영,고한중,전경문,노태희 한국초등과학교육학회 2004 초등과학교육 Vol.23 No.1

In this study, we investigated the effects of using concept mapping as an instructional tool on 4th graders' achievement, science learning motivation, and attitude toward science classes. T재 classes (38 students) from an elementary school were respectively assigned to a control group and a treatment group. Students were taught about "expansion of matter by heat" and "heat transfer". These topics were chosen because they require students to understand more concepts as well as relationships among them. A science learning motivation test and an attitude toward science classes test were administered as pretests. A researcher-made achievement test, the science learning motivation test, and the attitude toward science classes test were administered as posttests. The results indicated that using concept mapping in 4th-grade science classes was not significantly effective in improving students' achievement though a statistically significant positive effect was found in the subcategory of knowledge. No statistically significant effect of using concept mapping was found in the scores of the science learning motivation test and the attitude toward science classes test. Educational implications are discussed.

8.3% Carbamide Peroxide 함유 펜 형 자가미백제인 BIancTis Forte의 색조개선 및 안전성에 관한 임상연구

이진경,민선홍,홍성태,오소람,정신혜,황영혜,유성엽,배광식,백승호,이우철,손원준,금기연 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.2

This clinical study evaluated the whitening effect and safety of polymer based-pen type BlancTis Forte(NIBEC) containing 8.3% carbamide peroxide. Twenty volunteers used the BlancTis Forte whitening agent for 2 hours twice a day for 4 weeks As a control. Whitening Effect Pen (LG) containing 3% hydrogen peroxide was used by 20 volunteers using the same protocol. The change in shade (ΔE^(*) color difference) was measured using Shadepilot™ (DeguDent) before, during and after bleaching (2 weeks, 4 weeks and postbleaching 4 weeks). A clinical examination for any side effects (tooth hypersensitivity or soft tissue complications) was also performed at each check-up. The following results were obtained. 1 Both the experimental and control groups displayed a noticeable change in shade (ΔE) of over 2 No significant differences were found between the two group (p>0.05) implying that the two agents have a similar whitening effect. 2 The whitening effect was mainly due to changes in a and b values rather than in L value (brightness). The experimental group showed a significantly higher change in b value thus yellow shade than the control(p < 0.05) 3 None of the participants complained of tooth hypersensitivity or soft tissue complications confirming the safety of both whitening agents 8.3%의 carbamide peroxide를 함유한 펜형 코팅용 미백제인 BlancTis Forte (NIBEC, Seosul & JinCheon)를 실험군으로, 3% hydrogen peroxide를 함유한글 Whitening Effect Pen (LG. Seoul) 제재를 대조군으로 각각 피험자 20명에게 2시간씩 1일 2회 제조사의 지시대로 치아표면에 4주간 적용하도록 지시하고 색조개선 효능과 안전성을 평가하였다. 미백 효과는 미백 전 및 미백 2주, 4주 및 미백 종료 4주 후에 Shadopilot™을 이용하여 색 변화를 측정하였고, 매 내원시기마다 모든 환자는 치수생활력 검사와 치주 및 치태 검사를 통해 부작용 여부 (치아과민증 및 구감 내 연조직의 부작용)를 기록한 후 다음과 같은 결과를 얻었다. 1.실험군 및 대조군의 색 변화량 (ΔE)은 2이상으로 인지할 수 있는 색 변화를 보였으며, 두 제품 간에는 통계적으로 유의한 차이를 보이지 않아 (p > 0.05) 유사한 미백효능을 나타냄을 알 수 있었다. 2,미백효과는 명도의 개선보다는 주로 a. b값의 변화에 의한 것으로 특히 실험군에서 b값의 변화, 즉 황색조의 개선효과가 대조군에 비해 유의성 있게 높은 것으로 나타났다 (p <0.05). 3.치아나 치은의 과민증이나 이상증상을 호소하는 피험자는 없어 두 제품 모두 안전성을 확인할 수 있었다.

락탐화합물의 고리 확장 연구 : 입체 선택성과 Mechanism에 관한 연구 Study of Stereoselectivity and Mechanism

하진렬,최경민,김지아,원태진,신동수,이민주,안철진 昌原大學校 基礎科學硏究所 2002 基礎科學硏究所論文集 Vol.14 No.-

The ring expansion chemistry is one of the most important methods to prepare five-and six-membered heterocylic compounds. We have studied about γ-lactam ring expansion with stereoselectivity from β-lactam derivative. To do this chemistry, proton of N-benzyl group in β-lactam derivatives is eliminated by LDA and make carbanion.This anion make unstable 4-membered lactam intermediate, and then the ring is opened by homo clevage or hetero cleavage for releasing ring strain, followed by recyclization to one carbon to make γ-lactam ring with stereoselectivity in β-, γ- positions.

음식물 쓰레기 퇴비가 오이 발아와 유묘생장에 미치는 영향

박진영,조경철,김희경,지연태,정순주 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-

This study was conducted to find out toxicity of compost made of food waste to cucumber seed germination and seedlings growth when it was mixed with Mixlite for bed substrate. Mixlite was solely used as bed soil, or mixed with food waste compost ranging 1% to 100% (w/w). Germination percentage and seedling growth of cucumber were examined in 4 weeks after seedling. When cucumber seeds were sowed in Mixlite mixed with food waste compost at 100, 50, 30, 20, 10 or 1%, germination percentages were 30, 36, 38, 46, 74 and 84% compared to with control(100%), respectively. It showed that germination percentage percentage was adversely affected by the amount of food waste composed mixed in the bed substract. Plant height and hypocotyls diameter, root length and root fresh weight, hypocotyls fresh weight and cotyledon fresh weight of cucumber seedling were similarly adversely affected by the amount of food waste compost. Optimum content of the food waste compost for cucumber nursery substrate was found to be 1% of Mixlite.

한국 약용식물부터 폴리폐놀류군의 분리 및 기능성화장품소제로서의 응용

배두경,김성기,고대원,이창언,이진태,안봉전 경산대학교 생명자원개발연구소 2001 생명자원과 산업 Vol.5 No.-

For develope the functional cosmetic material. we extracted the Korean persimmon leaves in 80% ethanol solution and isolated fraction I, II, III, to use Sephadex LH-20 column. Their polyphenol quantity was 20%, 70%, 82.8% individually and fraction II, III had polyphenol which included a many flavan-3-ol skeleton structure. We investigated various biological activity such a tyrosinase, xanthin oxidase inhibition, SOD-like acivity and DPPH. Inhibitory effect of tyrosinase was inhibited 51.7%, 74.7% at 50 ppm, 500 ppm of the fraction III and SOD-like activity increased quickly at 500ppm of the fraction II, III. DPPH effect had 80% electron donate ability at 50 ppm all of the fraction and xanthin oxidase was more inhibited 80% at 50 ppm of fraction II, III. These results showed possibility that polyphenols of the Korean persimmon leaves become the functional cosmetic ingredient

배양계배 근아세포의 MyoD 발현에 대한 N-cadherin의 영향

안병태,진경실 가톨릭대학교 자연과학연구소 1999 자연과학논문집 Vol.20 No.-

근아세포는 여러 단계의 근육형성 프로그램을 거쳐 다핵의 근관세포를 형성하며, 근특이 단백질의 합성 및 축적이 일어난다. 근특이 단백질의 합성은 유전자 조절 단백직인 MyoD, myogenin, Myf-5, 그리고 MRF-4 등에 의하여 조절되며, 이들 단백질이 동형접합체나 이형접합체를 형성함에 따라 DNA와 결합하여, 전사를 조절한다. MyoD는 유전자의 발현 시기와 장소를 결정하는 단백질로, 근세포가 아닌 세포를 근세포로 전환시키는 능력이 있으며, 근세포 분화에 관여한다. 근아세포가 응집을 하기 위해서는 cell adhesion molecule 등이 필요하며, 이 과정에 칼슘의존적 cell-cell adhesion molecule로서 생쥐와 닭의 뇌세포에서 발현되는 N-cadherin이 관여한다. 신경세포내의 cadherin 발현양상에 따라 신경세포가 운동신경과 감각신경으로 분화되며, anti-cadherin antibody를 처리했을 때 팔, 다리의 연골형성이 억제된다. N-cadherin은 골격근세포나 그밖의 많은 세포에서도 태아시기에 일시적으로 발현되며, 분화 초기에 근아세포에서 발현되어 근세포 간의 접합 등에 관여한다. 또한, 세포의 접합 뿐아니라 융합, 이동, 배열 등에 관여한다고 보고된 바 있다. 본 연구는 N-cadherin이 근육에서 일시적으로 발현되는 것에 초점을 맞추고, anti-N-cadherin antibody(NCAD2)를 사용하여 N-cadherin을 억제함으로써 발생하는 근육 분화의 형태적, 생화학적 변화를 분석하였다. 근아세포 성장에 NCAD2를 처리함에 따라 형태적 분화양상의 차이가 관찰되었고, 융합의 정도가 감소되어 나타났다. 또한 NCAD2를 처리했을 때, 근세포 분화 동안 발현되는 MyoD의 발현이 억제됨을 관찰할 수 있었다. 이러한 결과들은 세포 상호작용을 중재하는 N-cadherin이 근세포 분화에 요구되는 신호전달에 중요 역할을 하는 것을 시사한다. N-cadherin is a Ca^(2+)-dependent cell-cell adhesion molecule. It was identified in brain cells of mouse and chicken. Its expression is transient in skeletal muscles and many other tissues. Myoblasts grown in the presence of anti-cadherin antibodies(NCAD-2) exhibited an altered morphology compared to control cultures, coupled with decreased myoblast fusion. Treatment with NCAD-2 suppressed MyoD expression in muscle cell differentiation. These results show that cadherin-mediated cell interaction plays a critical role in the signaling events required for differentiation of muscle progenitor cells.