私立大學生의 成長發育 및 營養狀態에 關한 硏究 : 中學校 入試有無過程을 通한 比較

朴淳永,具燾書,朴良元,金振浩,南炳執,朴昌植,朴喆斌 慶熙大學校 1980 論文集 Vol.10 No.-

In order to ascertain any possible changes in the physical and the nutritional status of Korean high school students before and after the abolishment of college entrance examination system, an intensive survey was conducted on the physical conditions of the incoming freshmen students (9532 males and 3428 females) of Kyung Hee University from 1972 to 1980. The finding are as below. 1. Physical growth conditions In each of the average physical dimensions of body height, body weight, chest girth and sitting height, a remarkable improvement was recorded for all age groups after the matriculation was abolished. 2. Physical and nutritional indices Relative body weight showed constant values of 35.0 in male and 32.0 in female. Relative chest girth showed the normal chest girth style in all age groups of both sexes. Relative sitting height showed a constant value of 54 for both sexes. The values of vervaeck index of th nutritional status were shown to be between 86-87 in male and 83-94 in female, Pelidisi index 91 and 92-93, Rohrer index of physical status 121-125 and 130-132, and Kaup index 206-211 and 202-210, respectively.

고압 수증기 내에서 산화막 형성에 관한 연구

박경희,안순의,구경완,왕진석 충남대학교 산업기술연구소 2000 산업기술연구논문집 Vol.15 No.2

This paper shows experimentally that oxide layer on the p-type Si-substrate can grow at low temperature(500℃∼600℃) using high pressure water vapor system. As the result of experiment, oxide layer growth rate is about 0.19Å/min at 500℃, 0.43Å/min at 550℃, 1.2Å/min at 600℃ respectively. So, we know oxide layer growth follows reaction-controlled mechanism in given temperature range. Consequently, granting that oxide layer growth rate increases linearly to temperature over 600℃, we can expect oxide growth rate is 5.2Å/min at 1000℃. High pressure oxidation of silicon is particularly attractive for the thick oxidation of power MOSFET, because thermal oxide layers can grow at relatively low temperature in run times comparable to typical high-temperature. 1 atm conditions. In the condition of higher-temperature and high-pressure steam oxidation. the oxidation time is reduced significantly.

肉鷄後期飼料의 給與時期가 鷄肉의 理化學的 性質에 미치는 影響 : 貯藏期間別에 따른 脂質含量과 脂肪酸造成의 變化 Changes in lipid contents and fatty acid compositions as the pass age of storage time

朴成振,尹東根,朴久富 진주산업대학교 1985 論文集 Vol.23 No.-

後期飼料를 3주령부터 조기에 급여한 9주령 Hubbad鷄肉의 3부위 근육을 공시육으로 하여 4℃에서 저장하면서 경시적(도살직후 저장후 2일 4일 7일)으로 지질의 함량을 추출하고 지방산의 조성을 GLC로 분석한 결과 다음과 같은 결과를 얻었다. 1. 지질함량은 도살직후 대퇴부위가 2.67%로 가장 높고 흉심부가 2.38%, 근위 1.28% 가장 낮았으며, 저장기간에 따른 지질함량의 변화는 3부위 모두 저장기간의 경과에 따라 지질함량이 감소하였다. 2. GLC로 분석한 지방산은 3부위 모두 myristic acid(14:0)로 부터 arachidonic acid(20:4)까지 10種을 분리 동정하였다. 3. 함량이 제일 높은 지방산은 세부위 모두 불포화 지방산인 Oleic acid로 40.7~45.5%였고 다음 Palmitic acid로 20.5~27.9%였으며 linoleic acid는 6.9~18.3%로 타육류에 비해 필수지방산인 linoleic acid의 함량이 높았다. 4. 3部位 모두 저장시간이 경과함에 따라 포화지방산의 함량이 증가되고 불포화지방산의 함량은 상대적으로 감소되었다. The meat cut 3 parts of leg, breast and gizzard of broiler-Hubbard at 9 weeks fed early finisher diet from 3 weeks were stored at 4℃ for four levels, immediately after slaughtering, 2 days, 4 days and 7 days after storing in order to extract lipid contents and fatty acid compositions was analyzed by the GLC method. The results obtained in this experiment were summarized as follows: 1. Lipid contents were the highest with 2.67% in the leg immediately after slaughtering and the lowest, with 1.28% in the gizzard. Fatty acid compositions were decreased in all the three parts as the storage time passed. 2. Ten fatty acids from myristic acid(14:0) to arachidonic acid(20:4) in all the there parts were identified by GLC. 3. The highest fatty acid was oleic acid with 40.7 to 45.5% and the next, palmitic acid with 20.5 to 27.9%. Linoleic acid was higher with 6.9 to 18.3% in broiler-Hubbard then in the other broiler. 4. As the storage time passed, saturation fatty acid increased and unsaturation fatty acid decreased relatively.

주의력결핍 과잉행동장애 아동에 있어서 연속수행검사의 진단적 유용성

구본훈,박형배,이희정,송창진,김진성,이광헌 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.6

서 론: 본 연구는 주의력결핍 과잉행동장애(이하 ADHD) 아동과 정상대조군의 연속수행검사(이하CPT) 결과 양상을 비교하여 CPT의 진단적 유용성을 알아보고자 하였다. 그리고, ADHD 아동의 연령과 성별, 지능, 그리고, 장애의 유형 등과 같은 변수에 따른 CPT의 결과양상을 비교하여, CPT가 ADHD의 어떤 특성을 잘 반영해주는가를 알아보고자 하였다. 대상 및 방법: DSM-Ⅳ의 진단기준에 의하여 진단이 내려진 ADHD 실험군 68명과 정상대조군 30명을 선정하였으며, 두 군간의 연령과 성별을 통제하였다. 실험군과 정상대조군 모두 환아의 부모가 ADHD 평가척도(ADDES-HV)를 작성하였으며, 환아에게 직접 CPT를 실시하였고 지적 능력을 평가하기 위해 K-ABC를 시행하였다. 결 과: 실험군과 정상대조군에서의 CPT 결과 양상을 비교하였을 때, 실험군과 정상대조군 사이에 민감도가 유의한 차이를 나타내었고, 반응 기준도 유의한 차이를 나타내었다(p<0.05). ADHD 아동을 대상으로 연령과 지능의 변화에 따른 CPT의 결과 양상을 비교하였을 때, 연령과 지능이 증가함에 따라 CPT각각의 결과들도 대체로 수행력이 호전되는 경향을 나타내었다. 주의력결핍 과잉행동 장애의 유형을 과잉행동을 동반한 군과 과잉행동을 동반하지 않은 군으로 나누어 비교분석을 한 결과, CPT 각각의 결과에서 유의한 차이는 나타나지 않았다. CPT 결과 양상에 있어서 남녀간 차이점을 비교하였을 때, 오경보오류와 정반응시간의 표준편차, 표준편차의 다양성, 그리고, 민감도가 유의한 차이를 나타내었다(p<0.05). CPT 각각의 8가지 결과 변수들에 대해 판별분석을 실시한 결과, 각각의 결과 변수들에 있어서 진단에 대한 전체 판별력이 모두 50%이상을 나타내었다. 그 중, 정반응시간의 표준편차와 표준편차의 다양성, 그리고, 민감도는 진단에 대한 전체 판별력이 모두 60%이상을 나타내었다. 결론 및 고찰: 이러한 결과들은 CPT가 ADHD의 진단에 있어서 어느 정도의 유용성을 가지고 있다는 점을 보여준다 하겠다. 즉, ADHD에 있어서 CPT는 비교적 선별검사와 같은 목적으로는 유용할 것으로 생각되며, 이는 또한 CPT가 장애의 진단에 있어서 보조적인 검사도구임을 나타낸다 하겠다. Objectives: The purpose of this study was to examine to diagnostic availability of CPT in children with ADHD, and what factors are affected to CPT results in the diagnosis of ADHD. Method: CPT, ADHD scales(ADDES-HV), K-ABC were administered to 68 ADHD patients and 30 normal elementary school students as the control group. Also, ages and sex are controlled between two groups. Results: In the differences of the results of CPT between ADHD patients and normal subjects, attentiveness and risk taking are significantly different(p<0.05). In the differences of the results of CPT between ages in ADHD patients, usually as more aged children are better performances in CPT. Also, in the differences of the results of CPT between intelligence in ADHD patients, usually as higher intelligent children are better performances in CPT. There are no differences of the results of CPT between types of ADHD in ADHD patients. In the differences of the results of CPT between sex in ADHD patients, commission error, hit reaction time standard error, variability of standard error, and attentiveness are significantly different between male and female patients(p<0.05). The correlations between ADHD scales and the results of CPT show that inattention subscale is significantly related to hit, omission error, hit reaction time standard error, and variability of standard error. In the discriminant ability between ADHD patients and normal children by the results of CPT, accuracy rates are more than 50% in all results of CPT. Especially, the accuracy rate of hit reaction time standard error, and the accuracy rate of variability of standard error, and also, the accuracy rate attentiveness are more than 60%. Conclusion: In this point of view, this study suggest that CPT is relatively valuable method in the diagnosis of ADHD. For instances, CPT is more likely to screen the ADHD from normal children, or to use as assisted method of diagnosis of ADHD in clinical settings.

優良室素固定菌의 探索分離 및 生理的 特性

朴愚喆,李光熙,金進鎬,李麟九,曺晋基 慶北大學校出版部 1987 慶北大農學誌 Vol.5 No.-

This experiment was conducted to search for Rhizobia with good nitrogen fixation abilities and to investigate their physiological characteristics isolated from 12 soybean cultivars and the affinities of root nodule bacteria with soybeans. The results obtained were as follows ; Based on colors, Rhizobia grown on YMA medium were divided into 3 groups, i. e., white, translucent and transparent, amounting to 60, 30 and 10%, respectively. In litmus milk reation, the strains which produced alkali, acid serum, alkaline serum and acid reached to 51, 29, 9 and 11%, respectively. Strains, S022, and S096 were slow-growers and produced alkaili, while strains, S080, S090, and S118 were fastgrowers and produced acid. The growth of root nodule bacteria on YMA medium was favorable between the initial pHs of 6.0~7.0. Glutamine, asparagine and allantoin as nitrogen sources enhanced the growth of root nodule bacteria. All the strains tested formed nodules on the soybean roots, and the strains with good symbiotic nitrogen fixation abilities that had white color, small colony, nitrate reduction abilities and no nitrite reduction abilities showed comparatively high nitrogen fixing activities. Some strains varied in nitrogen fixing activities according to soybean cultivars, and a few strains formed ineffective nodules which showed no nitrogen fixing activity.

TiO_(2)-SiO_(2) 나노 복합미립자의 합성

박진구,송영상,김종길,김호건 한양대학교 이학기술연구소 2005 이학기술연구지 Vol.8 No.-

TEOS(tetrethyl orthosilicate)로 부터 제조된 구형의 SiO_(2) 미립자를 TiOCl_(2) 수용액과 반응시켜 SiO_(2) 표면에 10~20㎚ 두께의 균일한 TiO_(2)막이 형성된 TiO_(2)-SiO_(2) 복합미립자를 합성하였다. X-선 회절 분석결과 합성초기의 복합체 TiO_(2)는 비정질 상태이지만 700℃이상의 열처리에 의하여 anatase결정상이 나타났고 900℃이상에서 rutile결정상으로 전이됨을 확인하였다. TiO_(2)-SiO_(2) composite particle in which the homogeneous TiO_(2) layer with width of 10~20㎚ was formed on the SiO_(2) surface by the reaciton of the spherical SiO_(2) particale in TiOCl_(2) solution As the resulte of XRD analysis the phase of TiO_(2) coated on SiO_(2) sphere was noncrystalline state however it was changed to anatase crystal state by heating at 700℃and th anatase phase was transfomed to reile phase at the aboce 900℃

일부 부인과 양성 질환자의 지방조직 및 혈청의 PCBs와 DDE 농도

박성균,이강숙,노영만,구정완,민선영,한진구,고원경,김미란,정재근,이종승,김진홍 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.1

목적 : 본 연구는 지방조직과 혈청의 PCBs와 DDE 농도를 측정하고, 이에 영향을 미치는 것으로 알려진 요인들과의 관련성을 평가하고자 하였다. 방법 : 유방암, 자궁내막증 등 유기염소계 화합물의 영향이 있는 것으로 알려진 호르몬 관련 질병을 제외한 부인과 환자 52명을 대상으로 지방조직과 혈청을 분석하였으며, 설문조사를 통하여 연령, 교육수준, 직업, 비만도, 흡연과 음주, 출산력, 수유력등을 조사하였다. 지방조직과 혈청의 PCBs와 DDE 농도는 가스크로마토그래피를 사용하여 측정하였다. 결과 : 지방조직의 경우, 13개 PCBs congeners 농도의 합은 중앙값이 48.29 ng/g, 기하평균값이 56.78 ng/g이었고, DDE 농도는 중앙값이 142.89ng/g, 기하평균값이 117.06 ng/g이었으며, 혈청의 경우는 PCBs congeners 농도의 합은 중앙값이 4.67 ㎍/L, 기하평균값이 4.85 ㎍/L이었고, DDE 농도는 중앙값이 1.75 ㎍/L, 기하평균값이 2.09 ㎍/L로 나타났다. 지방조직과 혈청의 DDE 농도 사이는 높은 상관성을 보였으나(r²=0.310, p=0,0002), PCBs는 상관성이 약한 것으로 나타났다(r²=0.029, p=0.2582). 영향요인을 범주화한 후 로그변환 시킨 지방조직과 혈청의 PCBs, DDE 평균의 차이를 분석한 결과, 지방조직의 DDE만이 출산자녀수(p=0.015), 초산연령 (p=0.014), 비만지수(p=0.035)와 연관성이 발견되었다 다중회귀분석의 결과 지방조직의 DDE는 출산자녀수가 적을수록, 초산연령이 늦을수록 증가하는 경향을 보였다. 결론 : 출산자녀수와 초산연령, 비만도가 지방조직의 DDE와 관련성을 보였으며, 또한 유기염소계 화합물의 장기간의 노출에 의한 영향을 평가하는데 있어서 혈청보다 지방조직이 더 유용한 생물지표임을 알 수 있었다. Objectives : This study was purposed to determine the levels of PCBs and DDE in adipose tissue and serum and to evaluate the relations with factors affecting these levels. Methods : We analyzed adipose tissues and sera from 52 gynecologic benign disease patients aged 27-78 years, except hormonal diseases such as breast cancer and endometriosis. We also surveyed age, education, occupation, body mass index (BMI), smoking, drinking, number of children, and duration of breastfeeding by questionnaires. Tissue and serum levels of PCBs and DDE were measured using gas chromatography. Results : The median and geometric mean levels of PCBs were 48.29 ng/g, 56.78 ng/g for adipose tissue and 4.67 ㎍/L, 4.85 ㎍/L for serum, and those of DDE were 142.89 ng/g, 117.06 ng/g for adipose tissue and 1.75 ㎍/L, 2.09 ㎍/L for serum, respectively. Adipose tissue and serum levels for DDE showed high correlation (r²=0.310, p=0.0002), but those of PCBs didn't (r²=0.029, p=0.2582). In analyses of the differences of the means of log transformed adipose tissue and serum PCBs and DDE levels for groups of potential covariates, only adipose tissue DDE levels were significantly associated with number of children (p=0.015), age at first birth (p=0.074) and BMI (p=0.035). In multiple regression analysis, adipose tissue DDE levels were significantly increased with decreasing number of children and increasing age at first birth. Conclusions : This study suggested that parity and adiposity were associated with levels of DDE in adipose tissue, and adipose tissue is a better biomarker than serum for evaluating the long-term exposure of organochlorines.

배열형 전력 MOSFET의 설계 및 제작

김진형,최연익,정상구,박찬광,김충기,성만영 亞洲大學校 1987 論文集 Vol.10 No.-

In this paper, the design of the array type power MOSFETs is discussed in terms of on-resistance, breakdown voltage, placement of FLRs(field limiting ring) and threshold voltage. Also, 9-cell(square-on square grid) VDMOSs are fabricated to confirm the feasibility of the design method. Existence of optimum p-well spacing for minimum on-resistance, which is anticipated by the theoretical results is confirmed by the experiment of the fabricated power MOSFETs. Breakdown voltage of power MOSFET is upgraded by using two FLR's and their optimum placement is determined from the experimental results of the diodes with FLRs. The threshold voltage is controlled by the ion implantation within the design specification. Experimental results are in good agreement with the design specification. Experimental results are in good agreement with the design values. Characteristics of the fabricated power MOSFETs are 190Ω in on-resistance, 270V in breakdown voltage and 2.9V in thershold voltage.

음악적 재능과 성격적 특징

정진우,박제경,염택구 최신의학사 1973 最新醫學 Vol.16 No.1

알코올 사용과 스트레스와의 관련성

전진용,오동열,구민성,이준석,천근아,박웅섭,김상아 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.4

Objectives : This study was designed to assess the relationship between alcohol use and stress. Methods : The study subjects were 1,261 people who drink among the 2,565 people who lived in Gangneung. We investigated the sociodemographic characteristics, Short Form-12 (SF-12), Global Assessment of Recent Stress (GARS) and Alcohol Use Disorder Identification Test (AUDIT). Results : In Problem drinking group the GARS was significantly positively associated with the AUDIT (p=0.02). In Social drinking group sex (p<0.001) and age (p=0.02) is significantly associated with the AUDIT. Conclusion : This study showed the significantly positively association between stress and alcohol use. We think that the intervention and active management of the stress can prevent the alcohol problem.