개구리 皮膚의 伸張度와 X線 全身照射가 이에 미치는 影響

李基錫,朱永恩 慶北大學校 醫科大學 1975 慶北醫大誌 Vol.16 No.1

개구리皮膚의 伸張度와 X-線照射가 이에 미치는 影響을 알기 爲하여 腹部 및 背部皮膚에서 各各 矢狀 및 橫斷切片을 作成하여 길이-張力曲線中 彈性의 限界內에서 Hooke의 法則에 따르는 部位에서 Young率을 求 하고 1,000R의 X-線全身照射를 한 後 1,3,5,7 및 10日에서 各各 皮膚切片의 伸張度를 求하여 서로 比較 하였던 바 다음과 같은 結果를 얻었다. 1. 正常개구리의 腹部皮膚의 矢狀 및 橫斷切片의 Young率은 各各 4.09×10 exp (7) dyne/㎠ 및 3.99×10 exp (7) dyne/㎠이었다. 背部皮膚에서 얻은 矢狀 및 橫斷切片의 Young率은 各各 3.69×10 exp (7) dyne/㎠ 및 5.81×10 exp (7) dyne/㎠이었다. 2. X-線 全身照射를 한 群에서 腹部皮膚에서는 그 矢狀切片의 Young率은 照射 3日에서 5.38×10 exp (7) dyne/㎠으로서 가장 높고 그 後는 漸次 낮아지는 傾向을 나타내었고 照射 10日에서는 4.20×10 exp (7) dyne/㎠으로서 正常値에 가까워지는 傾向을 나타내었다. 橫斷切片에서는 照射 3日 및 5日에서 Young率이 各各 4.55×10 exp (7) dyne/㎠ 및 4.50×10 exp (7) dyne/㎠으로서 가장 높고 그後는 第10日까지 次次 낮아진듯하나 그 傾向이 矢狀切片에서 처럼 뚜렷하지 않았다. 3. X-線 全身照射로서 背部皮膚에서는 그 矢狀切片의 Young率은 照射 第3日 및 5日에서 各各 4.25×10 exp (7) dyne/㎠ 및 4.30×10 exp (7) dyne/㎠으로서 높아지는 傾向을 나타내고 그後는 漸次 낮아져서 第10日에서는 正常値와 비슷하게 되는 傾向을 나타내었다. 橫斷切片에서의 Young率도 照射後 第3日 및 5日에서 各各 6.02×10 exp (7) dyne/㎠및 6.00×10 exp (7) dyne/㎠으로서 正常値보다 若干 높은듯 하고 그後는 낮아지는 傾向을 보이나 그 程度가 矢狀切片에서 처 럼 뚜렷하지 못하였다. In an attempt to observe the changes of the distensibility of the frog skin by whole body X-irradiation, the sagittal and transverse strips were excised from the abdominal and back skin of the frog (Rana nigromaculata) following whole body X-irradiation with 1,000R. Young Modulus of the strip was calculated from the length-tension curve of each sample, and a comparison was made with the non-irradiated control group. Experiments were performed on 1,3,5,7 and 10 days after the irradiation, and the results thus obtained are summarized as follows: 1. Young Modulus of the sagittal and transverse strips of the abdominal skin of the normal frog was 4.09×10 exp (7) dyne/㎠ and 3.99×10 exp (7) dyne/㎠, respectively. Young Modulus of the back skin of the normal frog was 3.69×10 exp (7) dyne/㎠ in the sagittal strip, and 5.81×10 exp (7) dyne/㎠ in the transverse strip. 2. Young Modulus of the sagittal strip of the abdominal skin in the irradiated group was the highest (5.38×10 exp (7) dyne/㎠) on the 3rd post-irradiation day, and a tendency of gradual decrease to the normal value on the 10th post-irradiation day was observed. In the transverse strip of the abdominal skin in the irradiated group, the highest values of Young Modulus were observed on the 3rd(4.55×10 exp (7) dyne/㎠) and 5th(4.50×10 exp (7) dyne/㎠) post-irradiation day, and a tendency of gradual decrease till 10th day was observed, but the tendency was not as prominent as in the sagittal strip. 3. A tendency of the elevated values of Young Modulus on the 3rd(4.25×10 exp (7) dyne/㎠) and 5th(4.30×10 exp (7) dyne/㎠) post-irradiation day with the decreasing values to the normal value on the 10th day was observed in the sagittal strip of the back skin of the irradiated frog. In the transverse strip of the irradiated frog, Young Modulus showed a slight increase on the 3rd(6.02×10 exp (7) dyne/㎠) and 5th(6.00×10 exp (7) dyne/㎠) day after the irradiation, but a tendency of decrease was observed thereafter.

18–30세 사이에 발생하는 뇌경색의 특징, 다기관 레지스트리 연구

장윤경,송태진,김용재,허지회,이경열,김영은,장민욱,조수진,강석윤 이화여자대학교 의과학연구소 2017 EMJ (Ewha medical journal) Vol.40 No.3

Objectives: Although there have been several reports that described characteristics for young age stroke, information regarding very young age (18–30 years old) has been limited. We aimed to analyze demographic factors, stroke subtype, and 3-month outcome in acute ischemic stroke patient who have relatively very young age in multicenter stroke registry. Methods: We evaluated all 122 (7.1%) consecutive acute ischemic stroke (within 7 days after symptom onset) patients aged 18 to 30 from 17,144 patients who registered in multicenter prospective stroke registry, 1997 to 2012. Etiology was classified by Trial of Org 10172 in Acute Stroke Treatment criteria. Stroke severity was defined as National Institutes of Health Stroke Scale (NIHSS) and stroke outcome was defined by modified Rankin scale (mRS) at 3 months after index stroke. Results: The mean age of all included patients was 25.1±3.7 years and 76 patients (62.2%) were male. The median NIHSS at admission was 4. Considering stroke subtype, 37 patients (30.3%) had stroke of other determined etiology (SOD), 37 (30.3%) had undetermined negative evaluation (UN) and 31 (25.4%) had cardioembolism (CE) were frequently noted. After adjusting age, sex and variables which had P<0.1 in univariable analysis (NIHSS and stroke subtype), CE stroke subtype (odds ratio, 4.68; 95% confidence interval, 1.42–15.48; P=0.011) were significantly associated with poor functional outcome (mRS≥3). Conclusion: In very young age ischemic stroke patients, SOD and UN stroke subtype were most common and CE stroke subtype was independently associated with poor discharge outcome.

청소년 인터넷 중독 검사 방법의 통계적 고찰 및 개선 -Young의 척도를 중심으로

박찬정 ( Chan Jung Park ),김형철 ( Hyung Chul Kim ),고영민 ( Young Min Ko ),현정석 ( Jung Suk Hyun ),김철민 ( Cheol Min Kim ) 한국컴퓨터교육학회 2010 컴퓨터교육학회 논문지 Vol.13 No.4

국내외에서 이루어진 기존의 인터넷 중독 검사에 대한 연구는 다양하며 방대하지만, 대부분의 연구가 중독도 검사를 위한 항목추출이거나 항목들을 이용한 중독도 분석이었지 항목간의 분석을 통한 차별화는 이루어지지 않았다. 본 논문에서는 리즈렐과 데이터마이닝 기법을 이용하여 Young의 인터넷 중독 검사방법을 고찰하고 문제점을 지적한 후, 검사 방법에 대한 대안을 제안한다. 이를 위해 Young의 척도를 이용하여 청소년 440명을 대상으로 설문을 실시하고, 요인분석을 통해 Young 척도의 문제점을 분석한다. 또한, 데이터 마이닝 알고리즘인 J48 및 PART를 이용하여 설문문항들 중에서 인터넷 중독도를 구분 지을 수 있는 항목들을 선별하고 이를 기반으로 인터넷 중독 학생들을 진단하고 처방하는데 활용하는 방법을 제안한다. So far, the researches about the Internet addiction testing are diverse and enormous. However, since the testing factors have the same importance, there is no discrimination among the factors. In our paper, we analyze the problems of the existing researches by using Lisrel and data mining algorithms. Next, we propose an alternative for the Internet addiction testing. In order to accomplish these, we make an questionnaire consisted of Young`s test and then, we asked to 440 primary and secondary school students. In addition, we analyzed the problems of Young`s test with factor analysis and then, we distinguish more important items from others with J48 and PART. Finally, based on this analysis, we propose a method to diagnose addicted students and prescribe them.

Meanings of English to NNESTs in Korean School Contexts

Young-Suk Hong 한국언어연구학회 2014 언어학연구 Vol.19 No.3

Hong, Young-Suk. 2014. Meanings of English to NNESTs in Korean School Contexts. Journal of Linguistic Studies 19(3). 181-209. Drawing on Narrative Inquiry Methodology, this paper examines Korean elementary English teachers’ lived experiences, focusing on the meanings of English they construct. They are located in a particular situation of co-teaching with a native assistant teacher of English. Three participant teachers’ shared stories are unpacked, analyzed, and interpreted narratively. As a result of the study, three meanings of English emerge: Firstly, English is a power. Secondly, English is a burden. Thirdly, English is a teaching content. In sum, the nonnative English teachers in elementary schools constructed and reconstructed repeatedly the meanings of English depending on contexts in which they are located. These multiple meanings of English are expressed when they live and tell their teacher stories, thus forming multiple English teacher identities. The findings from the study give important implications about in-service English teacher education in terms of building their teacher identities. The study suggests the importance of providing in-service English teachers with an opportunity to think about a narrative perspective regarding forming teacher identity with their own English concepts in order to suggest new possibilities for teachers, students, NS assistant teachers, and parents. (Jungwon University)

Managing Country of Origin Effect for Agricultural Product : Focused on Korean Ginseng

Suk‐Joon Yang,Young‐Eun Huh,Sung‐Hoon Park 한국국제경영관리학회 2005 국제경영리뷰 Vol.9 No.2

COO(원산지 효과)에 대한 많은 기존의 연구들이 이루어졌음에도 불구하고, 대부분의 기존의 연구들은 주로 전자제품 등의 공산품을 중심으로 또한 선진국-고품질 제품, 개발도상국 - 저품질 제품의 틀 속에서 연구가 주로 이루어져 왔다. 또한, COO를 통한 전반적인 마케팅 전략의 수립보다는 마케팅 프로세스의 일부분에 COO가 미치는 영향을 연구한 단편적인 연구가 대부분이었다. 이에 본 연구에서는 기존 연구와는 달리 선진국인 미국과 일본 시장을 대상으로 한국의 고품질 농산품인 “고려인삼”의 마케팅 전략의 수립이라는 전체적 측면에서 COO에 대한 기존 이론들을 검토하고 이를 실증하였다. 연구의 결과 고려인삼은 미국과 일본시장 모두에서 원산지 효과가 있는 것으로 나타났다. 하지만, 시장 세분화를 위한 가설인 고연령 - 저학력의 사람들에게 원산지 효과가 보다 유용하다는 가설은 기각되었다. 이는 과거의 연구와는 달리 개발도상국-고품질 제품의 조합이라는 제품 특성 때문인 것으로 보인다. 또한, 마케팅 전술을 세우기 위한 특정 유통 경로가 원산지 효과에 영향을 미친다는 가설은 미국과 일본시장에서 모두 지지되었으며, 제품에 대한 정보 원천이 원산지 효과에 영향을 미친다는 가설은 미국에서만 지지되고 있음을 확인하였다. 또한, 이러한 결과를 바탕으로 토의 부분에서 한국의 고품질 농산품인 고려인삼의 효과적인 미국과 일본시장에서의 마케팅 전략을 제시하고 있다. Most of the previous studies concerning American or Japanese market have focused on the difference in COO effects between indigenous product mostly with positive COO effect and foreign products mostly with negative COO effect. and, the previous COO research has concerned with the electric home appliances like TV or automobiles while there has hardly been research concerning the COO effect and its application strategies on agricultural products. But, our exploratory research on the agricultural product extends the product categories regarding COO effects and our study is concerned with foreign product which has positive COO effects in American and Japanese market. We can observe that there exists the COO effect on ginseng in American and Japanese market. but we can find some results which are not consistent with the previous research - especially, in demographic factors of america and information source of Japan. We explain the reason of this results and suggest new strategy of COO. Also, we suggest the marketing process to make use of the COO effects, which can be applied various product categories.

Anatomical distribution and detection rate of colorectal neoplasms according to age in the colonoscopic screening of a Korean population

Suk-young Lee,Wan Hee Song,Sang Cheul Oh,Byung-Wook Min,Sun Il Lee 대한외과학회 2018 Annals of Surgical Treatment and Research(ASRT) Vol.94 No.1

Purpose: Because data as a basis for the determination of proper age and modality for screening of colorectal neoplasms is lacking, we evaluated detection rates and anatomical distribution of colorectal neoplasms according to age in healthy individuals who underwent total colonoscopy for health checkup. Methods: A total of 16,100 cases that had received the colonoscopic examination from January to December in 2014 were analyzed. The total number of individuals who received total colonoscopy were divided by the number of individuals harboring colorectal adenoma to calculate the detection rate of colorectal adenoma. Individuals ≤50 years old were classified as young-age group and aged >50 were old-age group. Differences in anatomical locations of colorectal neoplasms were analyzed in the 2 age groups by chi-square test. Risk factors for colorectal adenoma in each age group were analyzed using univariate and multivariate logistic regression analyses. Results: Detection rates of colorectal adenoma were 13.7% in all cases and 12.8% for those in their 40’s. The main anatomical location of colorectal adenoma was proximal colon in both age groups (P < 0.001). Hyperplastic polyp was mainly distributed to the distal colon in both age groups (P < 0.001). Distal colon was the major site for colorectal cancer in the old-age group (P = 0.001). Proximal location of neoplasms was a risk factor for colorectal adenoma in both age groups with multivariate analysis. Conclusion: These data could be the bases for earlier initiation of screening for colorectal neoplasms with total colonoscopy to detect clinically significant colorectal polyps.

김치에서 분리한 Lactobacillus sp. JC-7과 Lactobacillus acidophilus 88간의 Electrofusion 최적조건 설정

조영배,최현정,백형석,전홍기 부산대학교 유전공학연구소 1997 분자생물학 연구보 Vol.13 No.-

김치 발효 숙성기간을 연장하고 신선도를 오랫동안 유지 할 수 있는 김치발효 starter의 개발을 목적으로 최적숙성기에 있는 김치로부터 bacteriocin생성능이 없는 유산균을 분리하여 동정하였으며, bacteriocin생성능이 우수한 L.acidophilus 88을 융합시키기 위해 electrofusion에 대한 최적 조건을 검토하였다. 분리균주는 Lactobacillus속으로 동정되어 Lactobacillus sp. JC-7이라 명명하였다. Electrofusion에 의해 생성된 융합주를 식별하기 위해 streptomycin(2.5㎎/ml)에 내성을 나타내는 Lactobacillus sp. JC-7변이주와 kanamycin(600㎍/ml)에 내성을 나타내는 L.acidophilus 88변이주를 분리하였다. Electrofusion을 100V/㎝, 120msec(72ohms,1670 capacitance) 에서 수행했을 때 융합효율이 가장 양호하였으며 전기장의 세기와 시간이 중가할수록 융합 효율이 현저히 감소하였다. 2가 양이온은 농도가 중가할수록 대체적으로 융합효율을 감소시키는 경향을 나타내었으나 1mM MGCl_2에서는 대조군에 비해 융합효율이 약간 증가하였다. PEG매개에 의한 융합법의 융합효율을 비교한 결과, 융합효율은 chemical fusion<electrofusion<electrofusion+20% PEG순을 나타내었다. Evaluation of Optimum Conditions for the Electrofusion between Lactobacillus sp. JC-7 Isolated from Kimchi and Lactobacillus acidophilus 88. Young-Bae Jo, Hyun-Jung Choi, Hyung-Suk Baik and Hong-Ki Jun*. Department of Microbiology, Pusan National University, Pusan 609-735,Korea-A lactic acid bacterium was isolated from kimchi. The isolated strain was identified as the genus Lactobacillus thrugh its morphological characteristics and named as Lactobacillus sp. JC-7. The optimum conditions for the electrofusion between streptomycin(2.5㎎/ml)resistant mutant of Lactobacillus acidophilus 88 and kanamycin(600㎍/ml) resistant mutant Lactobacillus sp. JC-7 were evaluated. The highest number of fusants were obtained at a capacitance value of 120msec(1670㎌), a field strength of 100V/㎝,and a pulse controller setting of 72Ω. The potimum pH of elecroporation buffer was 7.5 and the concentration of divalent cation was 1mM MG^2+. Electrofusants were efficiently obtained by addition 20% polyethylene glycol to electroporation buffer. The yield of fusion was better than that of using polyethylene glycol mediated chemical induction.

工業敎育大學의 實驗實習施設 共同活用 및 運營에 關한 硏究

尹錫天,牟相榮,權五憲,千炳善,周赫鍾,李永臣,金健中,羅聲雄,洪錫雨,吳德成,盧泰天 충남대학교 공업교육연구소 1983 論文集 Vol.6 No.2(A)

The College of Engineering was specialized to have a sole function for supplying technical high school teachers in 1977 and referred to as the College of Industrial Education according to the Government's policy. The economic impact mainly due to the oil-crises caused a severe problem to this college, namely discrepancy of supply to demand scale. Accordingly the number of student enrollment was to be fluctuated from 479 in 1979 through 800 in 1979 and 900 in 1980 to 430 in 1981. And the engineering departments have been attached to this Engineering Education College since 1981. These circumstanses met singnificant inefficiency in facility operation. This program aims at providing an overall relocation of the college facilities and preparing the practical system to make the joint-operation possible taking into account circulation, academic stream, budget, maintenance, etc. However this study could not get optimal spacing but some trade-off, considering the current situation.

김영삼 정부의 통일정책 평가

정용석 ( Young Suk Jung ) 한남대학교 사회과학연구소 1996 사회과학연구 Vol.6 No.-

If the assessment of unification policy of Kim Young-Sam`s Government is argued in the affirmative and negative aspects it is as follows: Firstly, the affirmative assessment will beas follows: 1) Tolerance of oppositionists and progressive forces into the institutional sphere. 2) Attempt the preferential logic for the nation 3) To sue the human rights problem of North Korea 4) Attempt for economic inducement policy Secondly, the negative assessment will be as follows: 1) Error in judgement of the North Korean situation and sentimental view of uni-fication is surged. 2) Lack of consistency in the unification policy 3) Existence of non-professional and extemporary policies 4) Confusion in security consciousness

미치광이풀 모상근 배양에서 Tropane Alkaloid 생산성 증진을 위한 최적 생물학적 엘리시터 선발

정희영,강승미,강영민,김용덕,양재경,정영관,최명석 Plant molecular biology and biotechnology research 2003 Plant molecular biology and biotechnology research Vol.2003 No.-

Scopolamine and hyoscyamine which belong to tropane alkaloids are the pharmaceutically valuable anticholinergic drugs. In order to increase the productivities, the effects of elicitation were investigated during hairy root cultures of Scopolia parviflora. Biotic elicitors originated from 3 fungi and 1 yeast were prepared as homogenate and supernatant and added to 3-week-old cultures. Both of homogenate and supernatant of Candida albicans elicitors increased the scopolamine production. The production of hyoscyamine was enhanced by homogenate of Fusarium solani and supematant of C. albicans. Most of the other fungal elicitors were also improved on the tropane alkaloid production compared to non-treatment. Among the elicitors tested, C. albicans was proved the optimal biotic elicitor on tropane alkaloids production. These results will be served mass production of tropane alkaloids by large-scale production.