개에서 17-ODYA가 신혈류량 자동 조절에 미치는 영향

양훈모,민영기,박중섭 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.1

17-ODYA is a potent inhibitor of the formation of 20-hydroxyeicosatetraenoic acid, epoxyeicosatrienoic acids and dihydroeicosatetraenoic acids by renal cortical microsomes. This study characterized the effects of intrarenal infusion of 17-ODYA on renal blood flow (RBF) and autoregulation of RBF. Seven dogs were prepared for the measurements of RBF, mean systemic and renal perfusion pressure. The renal perfusion pressure was able to be adjusted to desired levels by an inflatable supra-aortic occluder. Intrarenal infusion of 17-ODYA produced a diuresis and a natriuresis but no change in RBF. 17-ODYA had no effect on autoregulation of RBF: Both the plateau and steep portrions. of the autoregulatory curves were identical to control. Thesholds for lower limit of autoregulation were 72±4 and 72±5 mmHg during control and 17-ODYA and not significantly different from each other. These results suggest that endogenous cytochrome P-450 metabolites of AA do not influence RBF autoregulatory capacity in dogs.

교통사고 발생 추이에 관한 연구

양혁준,최봉근,윤태영,최중명,박순영,유동준 慶熙大學校 醫科大學 1997 慶熙 醫大 論文集 Vol.22 No.1

현무암 및 轉移金屬酸化物로된 放射材의 遠赤外線 放射特性 : Ⅲ. 전이금속산화물을 첨가한 현무암 방사재 Ⅲ. Using Basalt and Transitional Metal Oxides

梁重植,白英男 慶熙大學校 材料科學技術硏究所 1992 材料科學技術硏究論集 Vol.5 No.-

The purpose of this investigation was to prepare high efficiency infrared radiant by ceramics made from mixture of several kinds of transitional element oxide and the domestic basalt with a clay. The relative far-infrared radiation of the domestic basalt with several kinds of mixed transition metal oxides(Fe_(2)O_(3), MnO_(2), Co_(2)O_(3), CuO) as radiating additives was investigated in terms of the amount of additives and the basalt contents. These results revealed that the radiants of the mixed transition metal oxides can be emitted into four main types exhibiting ferric oxide-, mangane dioxide-, cobalt oxide- or cupric oxide- like behavior. And the radiant consists of the basalt and clay that decrease in the effect of the emissive intensity than the radiants of the mixed metal oxides.

자궁경부암에서 Glutathione S Transferase-π의 분포에 관한 연구

양승하,김의한,강영근,김대중,강상균 순천향의학연구소 1997 Journal of Soonchunhyang Medical Science Vol.3 No.1

Uterine cervical carcinoma is the most common malignant tumor of woman in korea. GST-π is multifunctional and is implicated to detoxication of drug and carcinogenesis. This enzyme is expressed in many tumors of human. Relationship between GST-π and drug resistence on uterine cervical carcinoma is not known, but condyloma accuminatum, CIN and invasive carcinoma express this isoenzyme, and it is regarded as a useful marker in preneoplasia and neoplasia. To observe the expression of GST-π in CIN and invasive carcinoma, we analyzed CIN 26 cases and invasive squamous cell carcinoma 61 cases by immunohistochemical stain using monoclonal mouse anti-human GST-π. The results are as followings: 1) The GST-π showed positive reactionin normal and metaplastic epthelium adjacent to CIN and invasive carcinoma in forty-three cases(62.3%) of sixty-nine cases. 2) The GST-π showed positive reactionin CIN in eighteen cases(69.2%) of twenty-six cases. Positive rates of CIN Ⅰ, CIN Ⅱ and CIN Ⅲ are 66.7%, 71.5%, 68.8%, respectively. 3) The GST-π showed positive reaction in invasive squamous cell carcinoma in fifty-one cases(83.6%) of sixty-one cases. Positive rates of microinvasive and invasive squamous cell carcinoma are 84.6% and 83.3%, respectively. According to cell type, keratinizing and nonkeratinizing type are 81.8% and 84.6%, respectively. Above results revealed that GST-π may be significance as a immuohistochemical marker in CIN and invasive SCC, and may be implicated in intrinsic resistance for anticancer drug.

韓國人 靑少年의 身長과 體重의 成長過程에 따른 形態的 變化에 關한 硏究

崔重明,朴良元,朴淳永 慶熙大學校 1989 論文集 Vol.18 No.-

The purpose of this study is to identify the physical growth in Korean. The subjects of this study include both of male and female, who are attending elementary school, middle school, high school, college in middle and large cities and rural areas. The total number of subjects was 144, 583 persons, including 76,402 persons of male and 68,181 persons of female. The researcher measured the physical status of the male and female - in terms of body height and body weight - through cross - sectional method. On the basis of the results, calculated the standard values of each body structure, the physical and nutritional indices, fatness and estimate the standard body weight, under - and over - weight, the weight of malnutrion and obesity in accordance with age, sex and body height for decision of health level. These surveys and measurements took for 18 months from 1 May, 1988 to 30 April, 1989, and the data from these surveys were analyzed through computer. The results are as follows. 1. Body Measurements 1) Body height (㎝) In the growth condition of body height, rapid growth has been observed among male in the ages 7-15 and among female 7-13. Growth in terms of body height turned out to be slower among higher ages by both sexes, and the average body height of full-grown Korean youth (20-24 age group) was 170.6±7.1㎝ for male and 159.9±6.3㎝ for female. The maximum growth age and annual increment of body height were 10-11 years old and 6.73㎝ per year for female and 11-12 years old and 6.8㎝ for male. These data show a fact thai the female starts to grow earlier than the male by about one year. The age of crossover between the sexes come around 9.5-11.5 years of age, where upon female outgrows male. 2) Body weight(㎏) Rapid growth. in terms of body weight, which was represented by a straight line on a growth curve was observed among the both sexes of 7-15 years of ages and growth turned out to be slower among higher ages by both sexed. The average body weight of full - grown Korean youth (20 - 24 age group) was 63.8±6.8㎏ for male and 52.95±6.0㎏ for female. The maximum growth age and annual increment of body weight were 12 - 13 years old and 6.0㎏ per year for male and 10-11 years old and 5.6㎏ for female. Those data show a fact that the female starts to grow earlier than the male by about two year. The age of crossover between the sexes come around 9.5-12.5 years of age, whereupon outgrows male. 2. Physical and Nutritional Indices 1) Relative body weight Rapid growth, in terms of relative body weight, which was represented by a straight line on a growth curve was observed among the both sexes of 7 - 16 years of age and the age of crossover between the sexes come around 7 - 12.5 years of age. 2) Rohrer index Rohrer index displayed more rich value in case of female than male and in the adolescent period, the level of fullness in lower than after the completion of development. 3) Kaup index In both sexes, Kaup index increased in accordance with advancing ages. The index comes to under 2.02 from 7 to 14 years old in case of male and from 7 to 13 years old in case of female. So the growth of longitudinal axis seemed to be more poor than the one of vertical axis. The index increases beyond 2.0 in case of male of after 15 years old for female. 3. The Fat Amount Through the Method of Measurement of Physical Body In 7 years of age group, the amount of body fat of male was 3.77±1.25 ㎏ and that of female was 9.49±2.24㎏. The amount in creased with age to reach for male in 20-24 age group an average 11.3±2.81㎏ and for female 14.81±2.12㎏. In 7 years of age group, the body fat ( % ) of male was 15.35±5.14% and that of female was 18.01±2.87%. The body fat ( % ) increased with age to reach for male in 20-24 age group an average 17.63±2.67 % and 24.85±4.47 % for female. In cases of male, the body fat ( % ) of 8-13 age group indicated normal range but the other age group indicated higher range. In cases of female, the body fat (%) of below 10 age group indicated lower range and over 11 age group indicates normal range. 4. The Standard Body Weight of the Koreans 1) The standard body weight of Korean youth In case of 7 years age group, correlation coefficient of r=+0.572(p 0.001) between body height and body weight was found in a male group of 2,358 subjects and r=+0. 353(p 0.001) was found in female group of 2,461 subjects, from which respective linear regression equation of body weight and body height was established for male and female as follow : For male ; Y ( B. W, ㎏ )=0.4059×( B. H, ㎝ )-26.1, ( Sy. x =±3.7) female ; Y ( B. W, ㎏ )=0.1471×( B. H, ㎝)+6.3, (Sy. x=±5.4) Similar regression equations of body weight and height were found all age groups from 7 to 19 years old and listed in table 12. 2) Standard body weight of Koreans A correlation coefficient of r=+0.320( p<0. 001 ) between body height and body wight was found in a 20-24 age male group of 7,659 subjects and r=+0.301( p<0.001) in a 20 - 24 female group of 6,693 subjects, from which respective linear regression equation of body weight and height was established for male and female as follows : For male ; Y ( B. W. ㎏ )=0.306×( B. H. ㎝ )+11.6, ( Sy. x =±6.4) female ; Y ( B. W. ㎏ )=0.2856×( B. H, ㎝)+7.3, (Sy. x=±5.7) The standard body weight, under - and over - weight, weight of malnutrition and obestiy of Koreans calculated and listed in table 13-a and 13-b.

전자 빔 조사 민감 물질의 전자회절분석을 위한 Imaging Plate 기술

김영민,김양수,김진규,이정용,김윤중 韓國電子顯微鏡學會 2008 Applied microscopy Vol.38 No.3

전자 빔 조사 민감 물질인 gibbsite (γ-Al(OH)₃)의 전자 빔 조사 상전이 연구에서 전자회절 자료의 기록에 대한 imaging plate 와 필름의 기록 특성을 실험적으로 비교하였다. Imaging plate는 극단적으로 낮은 전자 강도와 높은 전자 강도를 동시 기록하기에 충분한 선형 dynamic range를 갖기 때문에, 매우 낮은 전자조사 조건 (≤0.1 e-/μm²)에서 전자 회절 자료를 기록할 때 필름에 비해 회절 자료의 spatial frequency 범위가 두 배 이상 확장되었다. 심지어 이미 기록 포화된 투과 빔 주위의 신호 정보 레벨을 세분화하는 데에도 훨씬 우수한 분해 성능을 나타내었다. 따라서 본 연구 결과는 imaging plate가 극단적으로 낮은 전자강도 기록이 필요한 전자 빔 조사 민감 물질이나 cryo-biological 시편들의 구조 연구 관점에서 가장 적절한 기록 매체임을 나타낸다. An experimental comparison of the detection properties between imaging plate and film for recording the electron diffraction pattern was carried out on a radiation-sensitive material, an aluminum trihydroxide (gibbsite, γ-Al(OH)₃), through the electron beam irradiation. Because the imaging plate has a wide dynamic range sufficient for recording extremely low- and high-electron intensities, the range of spatial frequency for the diffraction pattern acquired by the imaging plate was extended to two times larger than the range by the film, especially at a low electron dose condition (≤0.1 e-/μm²). It is also demonstrated that the imaging plate showed better resolving power for discriminating fine intensity levels even in saturated transmitted beam. Hence, in the respect of investigating the structures of radiation-sensitive materials and cryobiological specimens, our experimental demonstrations suggest that the imaging plate technique may be a good choice for those studies, which have to use an extremely low electron intensity for recording.

사후분해 시체에 대한 법의학적 접근

최영식,이상용,김유훈,조갑래,이봉우,양경무,정낙은,서중석,이한영,이원태,강현욱 大韓法醫學會 2000 대한법의학회지 Vol.24 No.2

Disposal of a homicide victim by dismemberment is rare, but individual cases are on record in most major medicolegal departments. Recognition of postmortem mutilation may be of importance in the interpretation of certain murders committed by sexual perverts and other mentally deranged individuals and sometimes performed for the sole reason of easier disposal of the body. Postmortem dismemberment is usually readily recognizable as such; The edges of the injuries are dry and lack evidence of bleeding. The joints may be disarticulated without fracture, or the use of an axe or saw may be evident from examination of bones. Parallel horizontal or oblique furrows in the bone surface are caused by skipping of the saw prior to establishing depth. Such patterns on the bone may assist in identifying the particular saw involved. So we report 25 dismembered corpses that autopsied in National Institute of Scientific Investigation. This paper can help in attempting to establish not only the first criminal investigation steps but also the medicolegal approach methods in unidentified and dismembered deaths.

한국인 태아 및 사산아에서 얼굴신경에 대한 형태학적 연구

강양수,김종중,김복,정상봉,문영민,설경수,정윤영 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.3

It is critical that the accurate anatomy of the facial nerve IS known for uncomplicated successful facial surgery. Such an operation is hazardous because of the intimate relationship between the facial nerve and the expressional muscles. It is hoped that such basic information will be helpful to those who treat conditions involving the facial region. In order to define the detail of this relationship, many studies have been undertaken on dissected adult specimens. This study was based on Korean fetus and stillborn infant cadaveric dissections, and describes anatomical variations of the peripheral branches of the facial nerve that pose a potential danger in a number of surgical procedure on the face. The branching patterns were classified into six types: the frequencies of occurrence were: type I, 4.9%; type II, 24.4%; type III, 34.1%; type IV, 19.5%; type V, 12.2%; and type VI, 4.9%. Types II, III and IV together accounted for almost 80% of the specimens. In the discussion we compare the results of the present study with those of others and try to clarify the anatomical characteristics of the facial nerve in infants, which demand that special attention be paid to the avoidance of injuries during facial surgery.

무선통신 시스템을 위한 새로운 랜덤 접속 방법

신영주,임민중,양기주 동국대학교 산업기술연구원 2009 산업기술논문집 Vol.18 No.2

유선통신 시스템에서는 TDMA 타입의 랜덤 접속 방법들이 많이 사용되지만 무선통신 시스템에서는 TDMA 타입의 랜덤 접속 방법들뿐만 아니라 충돌을 줄일 수 있는 CDMA 타입의 랜덤 접속방법들도 많이 사용된다. 만일 적절한 전력 제어가 이루어진다면 CDMA 타입의 랜덤 접속은 제한된 수의 사용자들이 랜덤 접속할 때 검출 확률을 증대시킬 수 있다. 그러나 만일 전력 제어가 정확히 되지 않는다면 CDMA 타입의 랜덤 접속 방법은 성능이 떨어지게 되고 TDMA 타입의 랜덤 접속보다 오히려 성능이 나빠질 수 있다. 이 논문에서는 CDMA 타입과 TDMA 타입의 랜덤 접속의 결합 방법인 부분적 확산 랜덤 접속 방법을 제안한다. 제안하는 방법은 정밀하지 않은 전력제어가 이루어지는 시스템에서 CDMA 타입의 랜덤 접속이나 TDMA 타입의 랜덤 접속보다 우수한 성능을 낼 수 있다. While TDMA-type random access techniques are popular in wired communication systems, CDMA-type random access techniques are used as well to reduce collisions for wireless communications. If proper power control is applied, CDMA-type random access can increase detection probabilities with limited number of access users. However, if power control is not precisely performed, the performance of CDMA-type random access is degraded and can be worse than that of TDMA-type random access. In this paper, we propose partial spreading random access, which is a combination of CDMA-type and TDMA-type random accesses. The proposed method can outperform both CDMA-type and TDMA-type random accesses for partially power-controlled systems.

림프절 질환들에서 병변에 따른 수지상 세포의 변화

장영우,김대중,양승하,김의한 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1

The reaction patterns of the dendritic cells in lymph node lesions was as follows; 1. The number of the dendritic cells in the nonspecific lymphadenitis showed no significant decrease, so the immunologic reaction in the lymph nodes substained. 2. The number of the dendritic cells in tuberculous lymphadenitis showed significant decrease in case of the tubercles present in the lymph node than in case of no tubercle present. 3. The dendritic cells in lymph nodes of gastric adenocarcinoma were entirely disappeared regardless of metastasis. 4. The dendritic cells in lymph node of infiltrating ductal carcinoma were observed significantly regardless of metastasis. Above results suggested that the no expression of dentritic cells appeared to be the result of loss of function than disappearance. The loss of function of dendritic cells meaned that the easy infiltration of agents due to lack of immune reaction Because the immune reaction of lymph node in infiltrating ductal carcinoma was sustained while the immune reaction of lymph node in gastric adenocarcinoma was significantly reduced, the prognosis of infiltrating ductal carcinoma was better than gastric adenocarcinoma. But more research is necessary about the other prognostic factors.