작물의 수분관계 연구를 위한 pressure chamber 이용 방법

윤태명,최성용 安東大學校 農業科學技術硏究所 1995 農業科學技術 硏究論文集 Vol.2 No.-

Pressure chamber는 식물체의 수분상태를 측정하는 기기로써 식물의 수분관련 생리연구나 생태연구에 광범위하게 이용되고 있다. Pressure chamber의 구조와 측정이론을 개괄·고찰하고 또다른 식물체내 수분포텐셜 측정기기인 thermocouple hygrometer와 비교하여 pressure chamber의 장·단점을 검토하였다. Pressure chamber를 이용하여 포장에서 직접식물의 수분상태를 측정할 때의 주의하여야 할 점과 압력-부피 곡선법을 통한 수분관련 parameter의 산출방법에 대해서도 관련 논문을 종합·고찰하였다. 아울러 pressure chamber의 기타 이용방법으로 식물체의 수분이동저항 측정, 토양수분포텐셜의 간접적 측정, 수액채취, 물관부 emboilsm연구 등에 대하여 언급하였다.

전방십자인대 재건술 후 등속성 운동검사와 기능적 활동도

김명신,윤태식,노권재,왕진만 大韓再活醫學會 1997 Annals of Rehabilitation Medicine Vol.21 No.6

엽령별 엽수분상태에 따른 사과 잎의 기공 개폐반응

윤태명 安東大學校 農業科學技術硏究所 1994 農業科學技術 硏究論文集 Vol.1 No.-

후지(대목 M26)에 있어 엽수분상태에 대한 기공의 개폐반응이 엽령에 따라 차이를 보이는지를 알아보기 위하여 본 연구를 실시하였다. 15-20일, 30-40일, 70-80일, 110-120일 엽을 채취하여 pressure chamber와 steady-state porometer를 이용하여 pressure-volume곡선을 그리고 그에 따른 기공콘덕턴스를 측정하였다. 삼투포텐셜은 잎이 전개 발달함에 따라 낮아지는 경향을 보였다. 수분상태의 변화에 대한 기공콘덕턴스의 변화에 있어서는 엽령 30-40일 이상의 성숙잎에서는 엽령에 관계없이 팽압상실을 전후하여 급속히 기공이 닫히는 경향이었다. 그러나 엽령 15-20일의 어린 잎은 팽압상실후에도 기공이 넓게 열려있다가 -5.0MPa 정도에서야 기공이 완전히 닫혔다. Stomatal response to leaf water potential in Fuji apple leaves (on M26 stock) of different ages was studied. Leaves aged 15-20 days, 30-40 days, 70-80 days and 110-120 days were collected and pressure-volume curves and their relationship to stomatal conductance were obtained with pressure chamber and steady-state porometer. Changes in osmotic potential occurred during leaf expansion and maturation. In the response of stomata to leaf dehydration, water potential thresholds for abrupt stomatal closure were coupled to the turgor loss point in fully developed but differently aged leaves. However, stomata in expanding leaves of 15-20 days stayed wide open even far below the turgor loss point and closed completely about-5.0MPa

출산율 및 피임수용에 작용하는 가족계획외적 요인에 관한 분석연구

朴相潤,李明淑,廉容泰 고려대학교 의과대학 1991 고려대 의대 잡지 Vol.28 No.3

Most developing countries are attempting to control their rapid population growths by decreasing their fertility rates through family planning services. Many researchers have shown that fertility rates are affected mostly by economic level. social modernization. and family planning service. However, there has been little work to see which of these factors are actually influencing. This research attempted to find out how much of effect these influencing factors had by periodically analyzing acceptance of family planning in a rual area in Korea and the subsequent changes in the area's fertility rate. Afterwards, differentiating analyses were carried out to group these factors into direct and indirect effects. The subjects for this study came from a community health delvelopment project carried out by the Korea University in the Jeomdong Myon. Yeoju Kun. Kyonggi Province. The data for this research was obtained from village health workers'activity records, health service records of the health subcenter and various official government records of Myon. Unlisted data were obtained by an interview survey The data was sorted by a computer system using a Database package. and the statistical analyses were carried out by utilizing the SPSS program. The results of this study were summarized as follows: 1 Family planning acceptance rate was increased from 53.0% in 1983 to 79.9% in1989. Total fertility rate(TFR) was decreased from 3,515 in 1983 to 1.945 in 1989 The change of TFR in 1983 to in 1989 was attributed to the declining age speciflc fertility rate of high age. 2. Variables of beyond family planning influencing the contraceptive acceptance in orders of explaning capability were age of marriage, financial capability and children,telephone, possession of electric domestics television, husband's job, multiparity and maternal health, expense of medical insurance, fatalism, family type, birth-place, educational level of husband, job before marriage, newspaper, birth-place of husband, religion,desirable marriage of female, the eldest son and to live with parants, educational level. The total of those variables could explain 49.9% of contraceptive acceptance. 3. Variables of beyond family planning influencing number of children ever born in orders of explaning capability were age of marriage, husband job, reliance at siblings, religion, job educational level, the eldest son and to live with parants, family type,educational level of husband, expense of medical insurance, fatalism, financial capability and children, multiparity and maternal health, boy-preference, number of desirable children, newspaper, possession of electric domestics, birth place of husband, television, job before marriage. The total of those varlables could explain 51.0% of number of children ever born. 4. As the result of regression analysis with contraceptive acceptance it could explain 14.7% of number of children ever born. 5. As the result of stepwise multiple regression analysis with factors relating beyond family planning and contraceptive acceptance the total of those variables could explain 53.8% of number of children ever born

2 파라메터법에 의한 탄소성 파괴확률 예측수법

김태식,윤한용,임명환,정의정 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

Many researchers have made a lot of progress in studying the evaluation of fracture probability of brittle materials. However, studies of fracture probability for elastic-plasticity have not been made yet. An evaluation method for fracture probability which is grafted onto a 2-parameter criterion and statistical probability analysis is not only introduced in this study, but also applied to the simple 2-dimensional model and carbon steel piping to evaluate the effect of statistical variables.

재발성 호흡기 유두종증의 임상양상과 보조 치료의 유용성

성명훈,최병윤,진정욱,성원진,박범정,노종렬,김대우,원태빈,김광현 대한이비인후과학회 2001 대한이비인후과학회지 두경부외과학 Vol.44 No.12

자궁내 발육지연이 있는 출생체중 2,500 g 이상인 환아의 주산기 예후에 관한 연구

송태복,조명숙,하진아,윤대석,김철홍,김윤하,최영륜 全南大醫大 2004 전남의대학술지 Vol.40 No.1

중추신경계에 침범한 속립성 결핵 : 증례보고

이태환,김헌주,허철,한용표,홍순기,변진수,김명순,조미연,김윤미 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.11

in recent times, central nervous system(CNS) tuberculosis has been rare and the prevalence of the focal form, the tuberculoma, varies from 1 per 200 to 1 per 1000. CNS tuberculosis occurs as a result of hematogenous spread from a primary focus. mostly pulmonary tuberculosis. It can be diffuse exudative leptomeningitis or a localized tuberculoma ; the former is more common. We report a case of miliary cerebral tuberculosis in a 24-year-old female who had been having headaches for 4 months. Magnetic resonance imaging showed numerous small round Gadolinium-enhanced supratentorial and infratentorial lesions scattered throughout the brain. Histologic examination confirmed well defined tuberculous granulomas with central caseous necrosis in open biopsy, containing several acid-fast bacilli, the patient was treated with isoniazid, rifampin, ethambutol, pyrazinamide in combination with prednisolone.

간편 퍼지와 디지털 PI+D를 이용한 제어 시스템의 설계

박윤명,권태익,박종오,임영도,최부귀 동아대학교 정보기술연구소 2000 情報通信硏究所論文誌 Vol.8 No.1

본 논문에서는 퍼지 디지털 PI+D제어기를 이용하여 외란, 잡음, 플랜트 변화 등에 강한 제어시스템을 설계한다. 퍼지제어는 간단한 4개의 규칙과 소속함수를 유도하여, 간편 퍼지를 이용한 디지털 PI+D 제어기를 설계하였으며 또한 플랜트는 2차 선형 플랜트를 적용하였다. 본 논문에서 제안한 제어 시스템과 디지털 PID 제어, 디지털 PI+D 제어 시스템을 시뮬레이션을 통해 각 시스템의 특성을 비교 하였다.

열형광선량계에 의한 선량평가 알고리즘 개발

송명재,김희근,하정우,이태영,윤석철 대한방사선 방어학회 1992 방사선방어학회지 Vol.17 No.2

본 연구의 목적은 ANSI N13. 11-1983의 시험기준에서 제시한 개인선량계의 선량평가 시험범주를 모두 만족시킬 수 있는 선량평가 알고리즘을 개발하는데 있다. 알고리즘 개발 대상 개인선량계로는 Teledyne Isotopes사의 PB-3 열형광선량계로 하였다. 개발된 알고리즘에 대한 미국 Atlan-Tech사와의 2차례의 검증결과, 본 알고리즘은 ANSI N-13. 11-1983의 선량평가 범주를 모두 만족시키는 것으로 나타났다. The purpose of this study is to develop an algorithm of TLD dose evaluation to meet all requirements stated in ANSI N13. 11-1983. It made the PB-3 TLD of Teledyne Isotopes an object of the development. Personal dosimetry performance testings of the development algorithm have been performed twice through the Atlan-Tech, INC. in accordance with the criteria of testing described in ANSI N13. 11-1983. As a result, it is assured that the developed algorithm has complied with all requirements stated in ANSI N13-1983.