경주지역 여고생의 초경과 체성장간의 관계

김준섭,권오구,박진석,오종수,박정현,박제식,안세한,이용환,서정호,신태섭,최영배,김덕수,이관,박수경 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

본 연구는 경주지역 1개 고등학교 3학년 여고생을 대상으로 초경 시작 전인 초등학교 4학년부터 고등학교 2학년까지의 키, 몸무게, 가슴둘레 수치와 초경 연령을 파악하여 여성의 초경이 빠를수록 체성장 속도의 변화가 있을 것이라는 가설을 기초로 두 요인간의 관련성을 파악하고자 시행되었다. 경주시 1개 여자고등학교 3학년생 총 317명에 대해 ㅊ경 나이, 초경시 심리 상태, 초경이 시작되었을 때의 상담 여부와 상담하였던 사람, 부모 신장과 초경전후의 식사 규칙성, 다이어트 경험, 수면시간, 스트레스, 음주/흡연 여부, 질병력 등에 대한 설문 조사를 시행하였고, 초등학교 4학년부터 고등학교 2학년까지의 키, 몸무게, 가슴둘레에 대한 정보는 건강기록부에서 확보하였다. 상기 대상자 중 건강기록부가 분실된 39명, 초경나이에 대해 응답하지 않았던 29명 및 결석 등으로 조사를 하지 못하였던 42명을 제외한 조사 대상자는 206명으로 선정하였다. 대상자들의 초경연령 평균값(Mean±SD)은 13.0±1.11이었고, 초등학교 4학년부터 고등학교 2학년까지의 초경 이후 신장 성장률은 감소하였으며, 초경연령이 빠른 군이 초등학교 때는 신장에 있어서 우위를 차지하나 고등학교에 오면서 신장은 비슷한 수준이 되었다. 초경후 1-2년 사이에 체중과 흉위의 증가율은 감소하였고, 초경연령이 빠른 군이 초등학교와 고등학교 사이에 체중과 흉위에서 모두 우위를 차지하였다. 본 연구의 결과는, 흔히 이차 성징의 시작 시점 혹은 사춘기의 시작 시점으로 보고있는 초경 연령이 청소년기의 성장과 밀접한 관련성이 있고, 특히 체중과 흉위의 성장 속도와 밀접한 관련성이 있음을 시사한다. To understand the onset of menarche in relation to changes in physical growth that take place during female adolescence, especially the changes in height and weight velocity. The 207 senior in one women high school of Kyongju were investigated in April 3 to 8, 2001. We collected the information, relation in the age at menarche, height & weight of parents, regularity of eating, and obesity diet, duration of sleeping, sickness & stress near age at menarche, by self-recording. The status of height, weight & chest circumference between the 4th grade of primary school and the junior of high school was collected by individual Health Record. The results were followed; The average age at menarche was 12.95±1.11 years old and the most frequent age of menarche is 13 years. After menarche, the velocity of height, weight and chest circumference were decreased. The most rapid group of menarche hold dominant position in height during elementary school. As time passed, they dont hold dominant position in height. The most rapid group of menarche get an advantage in the weight and the girth of chest after elementary school. The height of subjects is directly proportional to the height of their parents. These results suggest that the starting age at menestuation can be closely associated with physical growth and development.

대체냉매 멀티에어컨 시스템을 위한 시뮬레이션 프로그램

박인섭,김영재,김학희 한국공업화학회 2002 응용화학 Vol.6 No.2

In the present study, a computer program was developed for simulating thesteady-state performance(COP, capacity, power consumption and etc.) of themulti-airconditioning systems using R410A. The computer program consists ofseveral subroutines for simulating indoor units, outdoor unit, compressors, andexpansion devices(capillary tube and electronic expansion valve), and for estimating the thermodynamic and transport properties ox the refrigerants and moist air. Intudies order to validate the simulation program, a series of case were carried out.The results of the simulation showed a good agreement with calorimeter test resultsof the actual multi-airconditioning systems using R410A.

건강지표를 이용한 초등학생의 건강수준 평가

박태섭,김영란 명지대학교 예체능연구소 2003 藝體能論集 Vol.14 No.-

The purpose of this study was to determine health Index for elementary school students based on their health and physical-condition records in an effort to help them check heir health status, provide authentic health information and suggest how to take advantage of health records The subjects were 400 boy and girl students in their fifth and sixth grade of elementary school in Incheon. For data handing. t-test, ANOVA test, Pearson correlation coefficient, multiple regression analysis, principal component analysis and Cronbach's a were employed, And SPSS Win 100 program was utihzed. The findings of this study were as below. First, the boy students had a better physical condition in every area than the girls, and the slxth grades grew better than the fifth grades at the p,.001 level of significance. Second, concerning the development of physical fitness, the sixth grade boys excelled the fifth grade boys at every area except sit and reach, and the gsp between them was more significant in 50m run dash, standing broad jump and set-ups. In the case of the girls, the sixth grades outperformed the fifth grades in every area, but the disparity between the two was insignificant. By gender, the girls significantly outdid the boys in sit and reach, but the boys had a significantly better physical fitness than the girls in the other areas. Third, the Width and volume seemed to be more related to physical development than height and sitting height. Although the contribution of physical condition to physical fitness depends on school year and gender, height and sitting height made a less prediction of physical development than the width and volume did. Fourth, when their fitness level was assessed by physical-condition index, the width and volume developed better than height and sitting height, and the students made the best progress in endurance run and walk. Fifth, concerning the impact of health habits on fitness level, they were most healthy at the time of workout. Their gender made a significant difference to fitness level during exercise, as the boys were more healthy than the girls at the p<.001 level of significance.

Thermal MOCVD와 DC pulsed PA-MOCVD에 의해 증착된 TiN 박막 연구

박용균,이영섭,이태수,이성재,조동율,천희곤 울산대학교 2001 공학연구논문집 Vol.32 No.1

유기화합물(TDEAT;Ti[N(C2H5)2]4)과 NH3를 이용하여 thermal MOCVD와 dc pulsed plasma assisted MOCVD(PA-MOCVD)인 2종류의 TiN박막을 증착하여 비교하였다. TiN박막의 특성분석은 XRD, AES, FE-SEM, α-step과 XPS로 연구하였다. DC pulsed plasma assisted MOCVD로 증착된 Tin박막은 ion bombardment 효과에 의해 열적으로 증착된 것보다 더 fine한 columnar구조를 나타내므로써 막의 결정질이 향상되었다. 플라즈마에서의 아르곤 이온의 충돌로 인해 탄소(C)는 오히려 유기 화합물보다 탄소 라디칼로 존재하였다. 따라서 탄소 라디갈은 기판의 강한 (-) potential에 의해 TiN박막에 trap되기 때문에 탄소(C)는 열적으로 증착된 TiN박막보다 더 많은 양이 존재하는 것으로 추정된다. By using of (TDEAT;Ti[N(C2H5)2]4)and ammonia gas source, we deposited two different TiN thin films with thermal MOCVD and dc pulsed plasma assisted MOCVD (PA-MOCVB). The properties of TiN thin films were studied by XRD, AES, FE - SEM, α - step and XPS analyses in this work. The TiN films deposited by dc pulsed PA - MOCVD have a little higher density and a fine columnar structure, compared with thermally deposited TiN thin films. This may be due to ion bombardment effect resulting in improved crystallinity in films. Carbon in the film may exist in the form of carbonic radical rather than organic compound because of collision with Ar ion in the plasma. Consequently, the content of carbon in the film of dc pulsed PA - MOCVD was higher than that in thermally deposited TiN films, because carbon radicals could be trapped in the film by strong negative potential of the substrate.

영동지역 4개 저수지의 식물성 플랑크톤 분포에 의한 오수생물학적 연구

박영제,김양배,전방욱,김형섭 江陵大學校東海岸地域硏究所 1993 東海岸硏究 Vol.4 No.1

영동지역에 위치하는 4개 저수지를 대상으로 1991년 9월에 수질조사 및 식물성 플랑크톤 분포에 의한 오수생물학적 수질평가 연구를 시도하였다. 수질평가를 위하여 수온, 수소이온농도, 총질소, 총인, 엽록소 a, 및 식물성 플랑크톤의 현존량을 조사하였다. 동정된 식물성 플랑크톤은 총 58종류로 남조류 10종, 황색편모조 1종, 와편모조 2종, 갈색편모조 1종 및 녹조류 37종류였다. 식물성 플랑크톤의 우점종은 저수지별로 달랐으며, 죽헌저수지는 Microsystis aeruginosa, 북동저수지는 Peridinium cunningtonii var. contactum, 달방댐은 Staurastrum simonyi var. simonyi, 초당저수지는 Chlamydomonas umbonata로 밝혀졌다. 수질 및 식물성 플랑크톤의 분포유형을 기준으로 호수 수질을 생물학적으로 판정할 때 죽헌, 북동 및 초당저수지는 β-중부수성 호수로 달방댐은 빈부수성 호수로 판정되었다. The survey of water quality and saprobiotic phytoplankton distribution was carried out in 4 reservoirs in eastern area of Kangwon Province at September 1991. Temperature, pH, total-N, total-P, chl.a, and standing crop of phytoplankton were measured for water quality examination. Total numbers of phytoplankton identified were 58 spp, consisted of 10 spp Cyanophyta, 1 spp Chrysophyta, 2 spp Dinophyta, 1 spp Crytophyta, and 37 spp Chlorophyta. The dominant species of phytoplankton in each reservoir was different as follows: Microsystis aeruginosa in Jukhean, Peridinium cunningtonii var. contactum in Bukdong, Staurastrum simonyi var. simonyi in Dalbang, and Chlamydomonas umbonata in Chodang. Estimated from the data of water quality and phytoplankton distribution, the reservoirs of Jukheon, Bukdong and Chodang were β-mesosaprobic whereas Dalbang was oligosaprobic.

자유단의 운동이 제한된 외팔보의 진동에 관한 연구

박영필,이규섭,김진수 연세대학교 대학원 1987 延世論叢 Vol.23 No.1

In this study, the vibration of a harmonically excited cantilever beam with motion-limiting stops at the free end is studied. The responses of the beam are calculated by numerical analysis with Galerkin's mode summation method. The modal displacement and velocity of the beam are obtained for various forcing amplitudes and clearances of the stops. The resuluts of the numerical analysis are compared with the results of the experiments. The number of the rebounds is increased with (i) the increase of the magnitude of the force and (ii) the decrease of the clearance of the stops. And the effects of the higher modes become significant as the magnitude of the farce is increased and the clearance of the stops is decreased.

剔出된 蟲樣突起 150例의 寄生蟲學的 調査成績

朴永燮,宋台錫,金鍾煥 醫藥係社 1964 綜合 醫學 Vol.9 No.2

OFFICE빌딩공사의 가설공사에 대한 적정비용 산정에 관한 조사연구

진영운,이영섭,박종근 서울산업대학교 산업대학원 1999 大學院論文集 Vol.6 No.-

건설업에서 가설공사는 공사현장의 근로자의 안전확보 등과 직접적인 관계가 있는 중요한 작업이다. 우리 나라와 일본의 안전 투자비율을 비교하기 위하여 안전투자 비용이 포함되어 있는 가설공사비만을 비교하여도 대략적인 안전투자비를 짐작할 수 있다. 양국의 3개 대형 Office빌딩 신축현장에 대하여 가설공사비가 전체 공사비에서 차지하는 비율을 분석하였는데 각각 3.8%와 9.6%로 나타났으므로 약 2.5배의 차이를 보였다. 따라서 우리 나라도 최소한 5% 이상 가설공사비를 확보하도록 제도적인 보완이 필요하다. The temporary work in construction work is so important that it is directly related with field workers' safety. In order to compare with the safety management cost between Korea and Japan, it is possible to estimate the approximate safety cost in comparison with the temporary work cost that is included safety cost. The rate of temporary work cost to the total construction cost is analyzed for each three office building sites between two countries. It is analyzed to 3.8% in Korea, 9.6% in Japan, with 2.5 times as much. Therefore it is necessary to establish the standard that the temporary work cost should be more than 5%.

골격근 근형질세망의 ATPase활성도에 대한 Vanillylnonanamide의 영향

박경섭,홍장희,류영수,성지연,허강민,임종호,이재흔,석정호 충남대학교 의과대학 지역사회의학연구소 1999 충남의대잡지 Vol.26 No.2

To investigate the effect of vanillylnonanamide(VN) on the ATPase activity of the sarcoplasmic reticulum(SR) of the skeletal muscle, we prepared the SR vesicles from the back muscle of the rabbit, and measured ATPase activity. The results as follows: Ca-ATPase activity was about 50% in the total ATPase activity of skeletal muscular SR. In the reaction mixture with calcium, 100μM VN increased ATPase activity to 20%, and 100 nM and 10 μM thapsigargin(THP) inhibited the ATPase activity to 50% and 60%, respectively. And 100 μM VN plus 100 nM or 10 μM THP more inhibited ATPase activity than THP alone did it. However, without calcium, 100μM VN did not affect ATPase activity, and 10 μM THP inhibited it to 41%, but VN plus THP inhibited it to 31%. The above results show that VN in the reaction mixture with or without calcium has the different action to ATPase activity when it is used alone or together with Ca-ATPase inhibitor THP. This suggests that VN might increase or decrease the skeletal SR Ca-ATPase activity through affecting the lipid membrane around the Ca-ATPase.

屎食性動物의 人體寄生蟲傳播에 關한 硏究 : 特히 蛔蟲 및 十二指腸蟲에 關하여

朴永燮 최신의학사 1965 最新醫學 Vol.8 No.3