몇가지 植物의 棲息地 造成에 關한 硏究

윤종선,김익환,신세균,심우경,이철희,신영철 韓國植物ㆍ人間ㆍ環境學會 1999 인간식물환경학회지 Vol.2 No.2

종의 棲息密度가 낮아지고 있는 하늘나리, 섬초롱, 자란 3종의 식물을 인위적으로 棲息地를 造成하기 위하여 국립공원 속리산 등산로변 標高 200m, 400m, 600m 지점에 150주식 종당 450주를 조직배양 및 분주에 의하여 육묘 된 묘를 이식하여 생존상태 및 棲息地 造成의 가능성을 2년에 걸쳐 검토한 결과는 다음과 같다. 1. 造成 棲息地의 토양의 理化學的 造成은 pH 5.2∼5.6, 유기물 함량 29∼54g/㎏, CEC 9.4∼11.5㎝ mol(+)/㎏으로 산성을 띠고 있었으며, 유기물 함량은 높은 편이었고, 염기치환용량은 낮았으나 비교적 우리나라 典型的 山地土壤의 理化學的 造成과 유사하였다. 2. 棲息地內 생장기간의 投光率은 標高 200m 지역은 10.8∼11.6%, 400m lw역은 10.8∼11.4%, 600m 지역은 11.0∼12.8%로 식재식물의 生長環境에 부족한 상태였다. 3. 식재 식물 수는 식재 후 활착율은 3종 모두 양호하였으나, 점차 감소되었으며, 특히 자란의 감소율이 높았다. 감소의 원인을 분석한 결과 하늘나리, 섬초롱, 자란 모두 굴취나 절취의 피해가 많았으며, 특히 자란은 凍害에 의한 枯死가 1년차 72∼86주, 2년 차에서 19∼35주로 조사도어 자연상태에서의 越冬은 어려운 것으로 나타났으며, 집중호우에 의한 流失도 감소의 한 원인이었다. 4. 식재식물의 생장상태는 불량하였는데 이는 投光量 부족으로 판단되어 棲息地造成時에는 錄陰期 投光量에 대한 사전 검토가 중요한 요인으로 나타났다. 5. 개화율은 섬초롱과 자란에서 높았으며 標高가 높을수록 개화기는 2∼4일 늦어지고 휴면기는 빨라지는 경향이었다. 식물 棲息地 造成時에는 造成 식물의 생장에 적합한 토양, 光環境 등을 고려한 위치 선정이 중요하며, 上層林에 의한 遮光으로 下層 초본식물 遷移速度가 빨라짐으로써 光環境 개선을 위한 上層林의 間伐, 周邊樹種의 更新이 요구된다. In order to make the artificial habitats of Lillium concolor, Campanula takesimana and Bletilla striata that the number of plant became sparse, 150 plants per species were transplanted at the region of 200m, 400m and 600m above sea level. And the growth of plants and the potential as habitats creation were analyzed. In the physical and chemical properties of soils in the there, soil pH was 5.2 to 5.6, organic matter content was 29 to 54g/㎏ and cation exchange capacity(CEC) was 9.4 to 11.5㎝ mol(+)/㎏. The transmittance rates of sunlight of the habitats during the growing periods were 10.8 to 11.6% in the 200m region, 10.8 to 11.4% in the 400m region and 11.0 to 12.8% in the 600m region. These transmittance rates were deficient for normal growth of plants. After the plants were transplanted, the survival rates of three species were high in common but the rates decreased gradually. Especially the decrease rate was high in the Bletilla striata. The causes of decrease were digging and cutting by climbers, sweeping asay by rainfall and freezing damage. Especially, the cold tolerance of Bletilla striata was weak in the natural condition. The growth of planted plants was poor, and it was assumed that the reason was shortage of sunlight transmittance. The flowering rates were high in the Campanula takesimana and Bletilla striata. And as the elevations were high, the flowering was later by 2 to 5 days but the dormancy was earlier. In the artificial making of plant habitats, the growth environment of plants have to be considered to choose the suitable region. And, because the habitats are shaded by the trees and bushes, the thinning of trees and the change of species are needs to improve the light transmission.

The Timing Verification of Synchronous Systems Considering the Types of Synchronization Elements

Sim, Myung Sub,Kwon, Yong Se,Shin, Yong Sup,Kim, Young Hwan 대한전자공학회 1991 ICVC : International Conference on VLSI and CAD Vol.2 No.1

Compared to transparent latches, edge-triggered flip-flops impose simpler timing constraints on synchronous systems, but have a more complex configuration. Therefore, due to their simpler configuration, transparent latches are preferred to edge-triggered flip-flops for VLSI design. However, their timing constraints are much harder to verify correctly. In this paper, we propose an efficient timing design methodology that follows signal timing references for the system with transparent latches. While the proposed approach can greatly simplify the design and verification process, it is difficult to verify the system if its system time is designed in a bumper-to-bumper fashion. In this paper, we also present an efficient timing verification algorithm for high-performance systems which fully exploit the flexibility of local timing constraints while satisfying the global timing constraints.

Propofol-Fentanyl 정맥마취의 임상적 유용성

심민성,김두식,류시정,김경한,김세환,장태호 KOSIN UNIVERSITY COLLEGE OF MEDICINE 2006 高神大學校 醫學部 論文集 Vol.21 No.1

Background: Propofol is being increasingly used as a intravenous anesthetic, but has no remarkable analgesic effect. Previous reports demonstrated that using of propofol with opioids had synergic effects, and decreased requiring dose of propofol. The purpose of this study was to examine the clinical usefulness of propofol-fentanyl intravenous anesthesia. Methods: Sixty patients of ASA status Ⅰ or Ⅱ undergoing breast mass excision were studied. Intravenous anesthesia was induced with fentanyl (2ug/kg) and bolus dose of propofol (2 mg/kg) and maintained with continuous infusion of propofol (6-10 mg/kg/hr). We measured loading, maintenance and total doses of propofol, changes of blood pressure, anesthesia time, and also observed the incidences of side effects of propofol anesthesia. Results: The bolus dose of propofol was administered within average injection time of 61.2 seconds. The systolic and diastolic pressure were significantly decreased after bolus injection of propofol (p<0.05). The administered total dose of propofol was 292.4±77.9 mg during average anesthesia time of 27.3 minutes. The incidences of injection pain, apnea and dizziness were 46.7%, 38.3% and 25% respectively. Conclusion: We concluded that the propofol-fentanyl intravenous anesthesia using infusion pump was clinically useful and safe method for short time operation.

Effects of Different Bandaging Methods for Treating Patients With Breast Cancer-Related Lymphedema

Se Hyun Oh,Sung Hwan Ryu,Ho Joong Jeong,Jung Hyun Lee,Young-Joo Sim 대한재활의학회 2019 Annals of Rehabilitation Medicine Vol.43 No.6

Objective To compare the treatment effects, satisfaction with the treatment, and performance improvement following bandage treatment using the spiral method and spica method for breast cancer-related lymphedema (BCRL). Methods A prospective study with 46 patients with BCRL was conducted. All patients were divided into either the spiral or spica group for non-elastic bandage therapy and received the same treatment for 2 weeks, apart from the group-specific bandaging method used. For both groups, the Quality of Life Instrument score before treatment, changes in the volume of lymphedema limb and the Disability of the Arm, Shoulder, and Hand (DASH) score before and after treatment, and treatment satisfaction after treatment were compared. The Student t-test was used to compare the parameters between the two different bandage methods. Results With respect to the treatment outcomes, total volume reduction and proximal part volume reduction after treatment were 98.0±158.3 mL and 56.0±65.4 mL in the spiral method group and 199.0±125.1 mL and 106.1±82.2 mL in the spica method group, respectively. Therefore, the spica method group showed a significantly better improvement (p<0.05). The DASH score changes after treatment showed that the spiral group score increased by 3.8±5.4 and the spica group score increased by 7.7±6.1; thus, a significantly better improvement was noted in the spica group (p<0.05). Conclusion The spica method indicated better volume reduction and DASH score improvement than the spiral method. Therefore, the spica method may be more effective for treating patients with BCRL.

산전 세포유전학적 검사의 임상적 분석: 서울아산병원 4년 간의 경험

심재윤 ( Sim Jae Yun ),김성훈 ( Kim Seong Hun ),김정숙 ( Kim Jeong Sug ),안송미 ( An Song Mi ),서을주 ( Seo Eul Ju ),유한욱 ( Yu Han Ug ),김구환 ( Kim Gu Hwan ),이지영 ( Lee Ji Yeong ),최은영 ( Choe Eun Yeong ),원혜성 ( Won Hye Se 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.3

목적 : 1999년부터 2002년까지 4년간 서울아산병원에서 시행된 산전 세포유전학적 검사 2,372건의 후향적 분석을 통하여 최근에 시행한 검사의 적응증, 비정상적인 핵형의 유형들에 대해서 살펴보고 각각의 적응증에서 실제로 비정상적인 핵형이 관찰되는 빈도에 대해서 알아보고자 한다. 연구 방법 : 총 1,780건의 양수천자술, 455건의 제대혈천자술, 137건의 융모막 융모채취술을 통한 산전 세포유전학적 검사들을 대상으로 후향적으로 의무기록을 검토하였다. 세포유전학적 검사 결과, 산전 유전 진단의 적응증, 검사 시의 연령, 비정상적인 핵형들의 유형에 대하여 분석하였고 산전 유전 진단을 시행하게 된 각각의 적응증이 갖는 양성예측률에 대한 계산을 통하여 비정상적인 태아의 핵형을 가장 민감하게 예측해 줄 수 있는 지표에 대하여 평가하였다. 결과 : 총 2,372건의 산전 세포유전학적 검사 중 비정상 핵형이 158건에서 확인되었다. (6.7%). 산전 유전진단의 적응증에서 가장 흔한 적응증은 비정상적인 산모 혈청 선별검사이었고 (33.9%), 비정상 초음파 소견 (22.9%)과 고령 임신 (20.0%)이 그 다음으로 흔한 적응증이었다. 균형 재배열과다형성을 정상 핵형으로 간주하였을 때 비정상적인 핵형과 정상 태아 핵형이 확인된 산모의 연령에는 유의한 차이가 관찰되지 않았다 (31.9±5.3 vs. 32.1±4.5세). 균형 재배열과 다형성을 제외한 비정상 태아 핵형이 확인된 산모에서 산전 유전 진단의 가장 흔한 적응증은 비정상 초음파 소견(58.7%)이었는데, 비정상 초음파 소견이 발견되었을 때 실제로 비정상적인 태아의 핵형이 나타나는 양성 예측률은 9.9%로 확인되었다. 결론 : 본 연구의 결과는 산전 세포유전학적 진단의 여러 적응중 가운데 비정상 초음파 소견이 태아의 비정상적인 핵형을 예측하는데 가장 민감한 지표가 될 수 있음을 시사한다. Objective : To review and evaluate a total of 2,372 cases of prenatal cytogenetic diagnoses at Asan Medical Center from 1999 to 2002. Methods : We reviewed to medical records of the patients in whom the procedure for prenatal cytogenetic diagnosis was performed. A total of 1780 cases of amniocentesis, 455 cases of cordocentesis, and 137 cases of chorionic villus sampling were analyzed. The cytogenetic results, indications for prenatal cytogenetic diagnoses, maternal ages, and the profiles of abnormal karyotypes were reviewed. We calculated the positive predictive value of each indication for abnormal fetal karyotypes and evaluated a factor that was the most sensitive marker for abnormal fetal karyotypes. Results : Among the 2,372 cases of prenatal cytogenetic diagnoses, abnormal karyotypes were identified in a total of 158 cases (6.7%). The most frequent indication for prenatal cytogenetic diagnosis was abnormal maternal serum screening (33.9%), followed by ultrasonographic abnomality (22.9%) and old age (20.0%). No significant difference was found between mean maternal age with and without abnormal fetal karyotypes after excluding balanced rearrangements and polymorphisms (31.9±5.3 vs. 32.1±4.5 years). Among the 92 cases of abnormal fetal karyotypes after excluding balanced rearrangements and polymorphisms, the most frequent indication for prenatal cytogenetic diagnosis was ultrasonographic abnormality (58.7%), followed by abnormal maternal serum screening (10.9%). The positive predictive value of ultrasonographic abnormality for abnormal fetal karyotype was 9.9%. Conclusion : Among the several indications for prenatal cytogenetic diagnosis, ultrasonographic abnormality could be the most predictive marker for abnormal fetal karyotypes.

Development of hangover settlemnet materials from natural products

Jung se young,Sim kyu jung,Lee chang hwan,Kwon hyun jung,Kim shung hee,Kwon so yeon 大韓藥學會 2003 大韓藥學會 總會 및 學術大會 Vol.2003 No.1

국내외 배전용 애자 기술 동향 분석

정세진(Se-Jin Chung),이순정(Soon-Jeong Lee),심보석(Bo-Seok SIm),허승훈(Seung-Hoon Heo),김현동(Hyun-Dong Kim),김철환(Chul-Hwan Kim),서인용(In-Yong Seo),이건후(Geon-Hoo Lee) 한국조명·전기설비학회 2016 한국조명·전기설비학회 학술대회논문집 Vol.2016 No.11

뇌종양과 동반된 두통의 특성에 관한 분석

심숙영 ( Sook Young Sim ),조경기 ( Kyung Gi Cho ),임연희 ( Yeon Hee Lim ),김세혁 ( Se Hyuk Kim ),신용삼 ( Yong Sam Shin ),안영환 ( Young Hwan Ahn ),윤수한 ( Soo Han Yoon ),조기홍 ( Ki Hong Cho ) 대한뇌종양학회 2004 대한뇌종양학회지 Vol.3 No.2

Objective:We analyzed the headache characteristics in patients with a brain tumor and its correlation with the grade of the tumor. Methods:Brain tumor patients with and without headaches were recruited. Sex, age, combined symptoms, neurological findings, and radiological characteristics were reviewed in both groups. Results:Sixty-nine patients(46 with and 23 without headache) comprised our study population. Intracranial pressure (ICP) symptoms were more prevalent in the headache group compared to the non-headache group(p=0.012). However, no other clinical differences were noted between the two groups. The prevalence of headache was increased in patients with metastatic brain tumor than primary brain tumor but there was no statistical significance. The characteristics of the headache were non-specific and could not be differentiated between malignant and benign brain tumors. Conclusion:Headache in brain tumor patients present in a non-specific characteristic. In patients with symptoms suggestive of an increased ICP or malignancy from another organ, further imaging may be warranted.

염료감응태양전지의 투과율에 따른 채광성능 및 현휘지수 분석을 통한 적정창면적비에 대한 연구

오명환(Oh Myung-Hwan),심세라(Sim Se-Ra),이철성(Lee Chul-Sung),진경일(Chin Kyung-Il),윤종호(Yoon Jong-Ho) 한국태양에너지학회 2009 한국태양에너지학회 학술대회논문집 Vol.2009 No.11월

It is more necessary to consider the various factors for developmenting visible PV module of alternative window than traditional PV module. It must have sufficient performance which is Tvis, daylighting, daylight factor, glare index. so that more needs to consider suitable plan and total evaluated technology. Under the this background. For using commonly a combination BIPV module system and Daylinghting that can alternative architectural window, our goal on this study is drawing proper window area ratio as the window by analyzing lighting performance and glare index depending on transmittance of DSSC. On this study, we drew the result about window area ratio that can apply in the building when applying DSSC in the window. In situation that window is alternated as curtain wall in atrium that has big Widow area, if applying red 15.8% DSSC of low transmittance, it is expect to proper because it is suitable illumination standard and doesn't occur a discomfort glare. In case of office, we propose to apply red 33.2% or blue 35.2% DSSC of high transmittance for no affecting lighting load. we expect to contribute to select proper and effective window when applying the window in the building by drawing the window area ratio that can apply in thee building depending on transmittance of DSSC and offering the glare index data

국내 배전용 케이블 기술 동향 분석

심보석(Bo-Seok Sim),이순정(Soon-Jeong Lee),정세진(Se-Jin Chung),허승훈(Seung-Hoon Heo),김현동(Hyun-Dong Kim),김철환(Chul-Hwan Kim),서인용(In-Yong Seo),이건후(Geon-Hoo Lee) 한국조명·전기설비학회 2016 한국조명·전기설비학회 학술대회논문집 Vol.2016 No.11