韓國産 미꾸리에 關한 育種·繁殖學的 硏究 : Ⅴ. Ultrastructures Changes of Pituitary Gland and Testes in Male Loach Ⅴ. 미꾸리 수컷의 腦下垂體와 精巢의 微細構造

윤종만,노순창,김계웅,박홍양 건국대학교 동물자원연구센터 1993 動物資源硏究誌 Vol.18 No.-

본 연구는 1992년 3월부터 5월까지 자연채광 상태의 건국대학교 양어실습장에서 사육중인 한국산 미꾸리 수컷(Misgurnus anguillicaudatus)의 뇌하수체와 정소의 조직형태학적 변화를 이해하기 위해서 실시되었다. 미성숙 시기인 3월의 뇌하수체와 정소의 미세구조와 5월경의 성숙단계인 각 조직간의 발달상황을 비교 분석하기 위해서 광학 및 투과형 전자현미경을 이용하였다. 뇌하수체의 성선자극 호르몬이 분비되는 부위(GTH)의 발달은 정소의 주기적인 발달단계와 대체로 일치한다. 성성숙 지수(GSI)는 4월부터 5월에 이르는 시기에 증가하다가 정자세포와 정자의 수가 증가되는 5월에 가장 높게 나타났다. 하나의 小葉 속에 발달단계가 다른 nest가 들어있더라도 같은 정자형성 단계에 속한다. 미성숙 단계에서는 이형염색질이 분산되어 있다가 성숙 단계에서는 핵이 진하고 균질한 상태로서 존재한다. 핵막은 분화초기에 나타난다. 제1차 정모세포에는 15개 이상의 작은 미토콘드리아가 두부의 세포질 주변에 있다가 발달함에 따라 2개의 커다란 미토콘드리아로 변화되면서 한쪽으로 튀어나온 부위 주변에 위치하게 된다. 정자 중편부의 주위에는 미토콘드리아초와 외측 섬유소로 둘러싸여져 있다. This study was undertaken to understand the histomorphological changes of pituitary gland and testis of Korea loach(Misgurnus anguillicaudatus) under natural circumstances from March to May 1992. Sexual maturation was studied on 50 males Korean loach(Misgurnus anguillicaudatus). The results obtained in this study were as follows: The ultrastructures of the gonadotrophs largely parallel the cyclical changes in the testes. Gonadosomatic indices(GSI) increased from April to May, and showed the peak in May, coinciding with the increase of spermatids and spermatozoa in male. Each nest of cells belongs to one spermatogenetic stage, although nests at different stages can be found within the one lobule. At first heterochromatin is dispersed and then is condensed. In mature gamete, the nucleus is dense and homogeneous. The nuclear membrane appeared at the beginning of differentiation. In the primary spermatocytes, the small mitochondria are abundant over the outer cytoplasm. In the latter, the two large mitochondria are located over the cytoplasm. During cell differentiation, the cytoplasm decrease and the nucleus increases. Sperm mitochondria are assembled into an organized sheath surrounding the outer dense fibres and axoneme of the flagellar midpiece.

액체로켓엔진의 성능 민감도 해석

조원국(Won Kook Cho),남창호(Chang Ho Nam),박순영(Soon Young Park),김철웅(Chul Woong Kim) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11

A sensitivity analysis of the liquid rocket engine has been made. A mode analysis program is used to predict the performance change due to the variation of rocket engine operating environment. The propellant supply pressure and density are the major variables of the operating condition. The material properties of the turbine driving gas is assumed as the function of mixture ratio. The discrepancies of performance change between constant turbine driving gas properties and variable properties are greater for the case of fuel pump inlet pressure change than the oxidizer pump inlet pressure change.

약물 중독 시 위 세척에 의한 산 - 염기 평형 및 전해질의 변화

윤형란(Hyung Ran Yun),손동현(Dong Hyun Sohn),이창범(Chang Bum Lee),이재웅(Jae Woong Lee),양석철(Suck Chul Yang),한동수(Dong Soo Han),손주현(Ju Hyun Sohn),김순길(Soon Kil Kim),김호중(Ho Jung Kim) 대한내과학회 1998 대한내과학회지 Vol.54 No.4

N/A Objectives: There is little information on the imbalance of electrolyte and acid-base metabolism associated with gastric lavage in acute drug intoxication patients. This study was aimed to analyze the acid-base and electrolyte abnormalities associated with gastric lavage in acute drug intoxication patients. Methods: We studied 24 acute drug intoxication patients who had performed gastric lavage with 10 liters of 0.9% NaC1. Electrolyte parameters and arterial blood gas analysis were carried out before and after gastric lavage. Results: After gastric lavage, acidosis was reduced in general. But there was no significant change in pH (7.34±0.02 vs. 7.38±0.15, p=NS). In acid-base balance, the mixed form of metabolic acidosis and respiratory acidosis was reduced from 7 to 2 cases, and the simple form of respiratory acidosis was reduced from 3 to 1 case. In contrast, normal form was increased from 5 to 7 cases and the simple form of metabolic acidosis was increased from 2 to 6 cases. In electrolyte parameters, serum sodium was reduced significantly (145±1.0 mEq/L vs. 141±0.8 mEq/L, p<0.01), but there was no case of significant hyponatremia (<135mEq/L). Bicarbonate level (20±1.1 mEq/L vs. 22±0.9 mEq/L, p< 0.05) and anion gap (19±1.6 mB vs. 13±1.3 mEq/L, p< 0.01) showed significant change. But, blood levels of potassium (3.6±0.1 mEq/L vs. 3.8±0.1 mEq/L, p=NS), chloride (106±0.6 mEq/L vs. 106±0.6 mEq/L, p=NS) and F'aCO2 (36±1.mmHg vs. 37±1.5 mmHg, p=NS) were no significant change before and after gastric lavage. Conclusions: Gastric lavage with 10 liters of 0.9% NaC1 in acute drug intoxication patients did not show clinically significant changes in electrolytes and acid-base balance.

디젤오염 지하수 정화를 위한 공기주입정화법 칼럼 실험

장순웅,이시진,송정훈,권수열 한국환경과학회 2004 한국환경과학회지 Vol.13 No.12

Bio sparging experiments were conducted in a laboratory column to investigate the potential removal of diesel contaminated groundwater. The objectives in this study were (a) to determine the extent of diesel degradation in laboratory columns under supplement of nutrient; (b) to determine the effect of variation of air flow in the removal of diesel and (c) to evaluate the potential enhancement of diesel degradation as a function of temperature. Our results showed that the nutrient supplement and higher air flow greatly enhanced diesel degradation. However, the variation of water temperature examined slightly increased degradation rate of diesel fuel.

TiO₂ 광촉매를 이용한 Atrazine과 PCP의 분해

박재홍,안상우,장순웅 한국물환경학회 2004 한국물환경학회지 Vol.20 No.6

The photocatalytic degradation of atrazine and PCP, a endocrine disruptors, has been investigated over TiO₂ photocatalysts under ultraviolet (UV) light irradiation. The effect of operational parameters, i.e., pH, light intensity and persulphate concentration on the degradation rate of aqueous solution of atrazine and PCP has been examined. The results presented in this work demonstrate that, as pH and the light intensity increased, the photocatalytic reaction rates were enhanced. Individual use of TiO₂-persulphate was far more effective than using only TiO₂ in atrazine and PCP removal. Based on the overall experimental results, the photocatalytic oxidation of atrazine and PCP with the coated TiO₂ photocatalyst is found to be very effective under the operational conditions delineated in this study.

고체상 미량분석법(SPME)을 이용한 GC/FID에서 PCE 및 TCE 최적 분석법

안상우,이시진,장순웅 한국환경과학회 2004 한국환경과학회지 Vol.13 No.10

A new method based on solid phase microextraction(SPME), coupled with GC/FID, has been developed for the determination of PCE and TCE in water samples. The experimental parameters affecting the SPME process (i.e, kinds of fibers, extraction time, desorption time, extraction temperature, volume ratio of sample to headspace, salt addition, and magnetic stirring) were optimized. The coefficients of determination (R²) for PCE and TCE were 0.9951 and 0.9831, respectively when analytes concentration ranges from 10 to 300μg/L. The relative standard deviations were 3.4 and 2.1% for concentration of l0μg/L(n=5), respectively. The detection limits of PCE and TCE were 0.5 and 1.3μg/L, respectively.

검도 머리치기 유형에 따른 상지의 근전도 비교 분석

장언량,박영훈,염창홍,서국웅,이경순,강영택,양충모 釜山大學校 附設 體育科學硏究所 2004 體育科學硏究所 論文集 Vol.20 No.-

Of the fencing club members at D university in B city, the four skilled members and the 4 unskilled members were selected. The MVC of the left brachioradialis, right brachioradialis and left flexor carpi radialis, right flexor carpi radialis each was measured in each group according to the striking directions as they act 'striking left right head'......

하시모토 병과 동반된 악성 빈혈 1 예

한 호,안명주,최정혜,이창범,이영열,최일영,김인순,이웅수 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.2

Pernicious anemia is the most common cause of vitamin B12 deficiency and is caused by autoimmune destruction of parietal cell containing gastric mucosa region. This disease is significantly associated with autoimmune endocrinopathies and anti-receptor autoimmune disease. We report here a case of 26-year old man who was diagnosed pernicious anemia with high level of autoantibody titer (antithyroglobulin antibody 1:25,600 and antimicromosomal antibody 1:6,400) indicating subclinical Hashimoto's thyroiditis. Since other autoimmune diseases are frequently associated with pernicious anemia even without evidence of clinical symptoms, screening test for the presence of autoimmune disease should be evaluated in these patients.

원저 : 집단치료를 통한 비만환자의 체중감량이 삶의 질에 미치는 영향

강준구 ( Joon Gu Kang ),이창범 ( Chang Beom Lee ),이혜순 ( Hye Soon Lee ),배상철 ( Sang Cheol Bae ),최웅환 ( Woong Hwan Choi ) 대한비만학회 2005 The Korean journal of obesity Vol.14 No.3

연구배경: 집단치료를 받고 있는 비만환자에서 체중 감량을 하였을 때 나타나는 삶의 질 변화를 수량화된 척도로 알아보고자 이 연구를 시행하였다. 방법: 2003년부터 2004년까지 한양대학교 구리병원 내분비내과에서 체중감량 치료 방법에 동의한 9명의 환자를 대상으로 조사하였다. 체중감량의 목표는 첫 내원시 체중의 10%로 정하였다. 건강관련 삶의 질 측정도구(Health-related quality of life instrument)를 치료 시작 전과 후에 측정하였다. 일반적 건강 프로필로서 건강 관련 삶의 질을 측정하는 KSF-36 (Korean Medical Outcomes Study 36-Item Short Form)을 사용하였다. 결과: 1. 대상환자의 임상적 특성과 비만 치료 전후의 변화 연구대상 환자 9명은 모두 목표 체중감량에 성공하였다. 개별적 특성은, 전원 여성이었고 전체 환자의 평균값은 연령 59.3±2.0세, 신장 160.0±9.1㎝, 체중 70.9±2.0㎏, BMI 28.8±0.9㎏/㎡이었다 (Table 1). 20주간의 식사요법, 운동요법, 약물요법, 행동그룹치료 후 체중 63.6±2.9㎏ (P<0.05), BMI 25.9±1.1 ㎏/㎡ (P<0.05)로 감소하였다. 2. 건강관련 삶의 질 측정 비만환자의 평균 KSF-36 전반적 건강값 (Global)은 49.43±5.25 (38.8~56.4)에서 57.62±8.10 (50.3~65.8)로 수치상의 증가만을 보이나 체부 통증 (bodily pain)이 36.25±21.34 (30~70)에서 33.75±13.03 (20~50)로 (P<0.05), 정신적 건강 (mental health)이 47.50±20.33 (16~84)에서 62.00±10.69 (48~80)으로 (P<0.05)으로 향상되었다. 결론: 집단치료를 받고 있는 비만환자에서 체중 감량을 하였을 때 삶의 질 향상을 가져올 수 있음을 알 수 있었다. 그러므로 앞으로 더 많은 숫자의 환자를 대상으로 한 대규모 연구가 필요할 것으로 생각된다. Background: This study was to exam the effect of weigh reduction after group therapy on the quality of life of patients with obesity. Methods: The participants of this study were 9 women with obesity who visitied the Hanyang University Hospital Obesity Clinic. Data were collected for 2 years from 2003 to 2004. Weight, height, abdominal circumference, and BMI were measured before and after group therapy which consisted of medical and behavior therapy. And also KSF-36 (Korean Medical Outcomes Study 36-Item Short Form) was used as a Health-related quality of Life instrument. Results: In use of KSF-36, Global score before and after treatment showed no significant change (49.43±5.25 (38.8~56.4) vs 57.62±8.10 (50.3~65.8)) but bodily pain (36.25±21.34 (30~70) vs 33.75±13.03 (20~50), P<0.05) and mental health (47.50±20.33 (16~84) vs 62.00±10.69 (48~80), P<0.05) showed significant changes. Conclusion: According to the result of this study, in group therapy of patients with obesity, weigh reduction improved the quality of Life.

Proceedings of the 2000 Annual Conference of the Korea Solid Waste Engineering Society (2) : Biodegradation Studies of BTEX Contaminated Groundwater by Toluene-Enriched Soil Microorganisms

( Soon Woong Chang ),( Si Jin Lee ) 한국폐기물자원순환학회(구 한국폐기물학회) 2000 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2000 No.2