나노여과 공정에의한 플라스틱첨가제 및 내분비계교란물질의 제거특성

오정익,이석헌 경희대학교 2003 環境硏究 論文集 Vol.12 No.-

The rejection characteristics of sanofiltratios membranes for plastic additives and for endocrine disruptors were investigated. Bisphenol A, estradiow, phtawic acid estEus, phosphoric acid tri-esters, and so on wereused as target solutes. a simplified diffusion convection model was proposed to neglect the effect of the operating pressures and the rejections were converted into one parametEu. The converted rejection parametEu was further separated into two parameters of the size effect parametEu and the parameter of other effects. this separation into two parametEus was successful and the characteristics of the other factors were discussed. the difference is tho material of membranes affected the parametEus and similar membranes gave similar tesdoscy of the parameter.

Modulation of Gene Expressions and Enzyme Activities of Methionine Sulfoxide Reductases by Cold, Aba or High Salt Treatments in Arabidopsis

Oh, Jee-Eun,Hong, Suk-Whan,Lee, Yunsook,Koh, Eun-Ji,Kim, Kideok,Seo, Youngwon,Chung, Namhyun,Jeong, Moonsoo,Chang,Chang, Cheolseong,Lee, Byoungcheon,Kim, Kyoung Heon,Lee, Kwangwon,Lee, Hojoung 생명자원연구 2005 생명자원연구 Vol.13 No.-

고속핵에서 GABA가 동맥압에 미치는 영향

이정헌,오기화,안동국,박재식 慶北大學校 醫科大學 1996 慶北醫大誌 Vol.37 No.3

목적 : NTS (nucleus tractus solitarius)는 압감수성 반사 구심성 신경이 처음 시냅스를 형성하는 곳으로 동맥압 조절에 중요한 역할을 한다. NTS에서 어떤 특정 물질이 동맥압 조절에 관여하는지는 정확히 밝혀지지는 않았지만, NTS에 존재하는 많은 물질들이 이들 과정에 관여하고 있다. 그중 하나인 GABA성 약물이 NTS에서 순환계에 미치는 영향을 구명하고자 본 실험을 시행하였으며 아울러 반대편 NTS를 lidocaine으로 억제하였을 경우의 변화를 관찰하여 NTS에서 신경회로 일단을 밝히고자 하였다. 대상 및 방법 : 실험동물은 체중 300-500g 되는 숫컷 Wistar쥐를 사용하였다. 동맥압 측정과 약물 주입을 위하여 대퇴 동정맥에 삽관하였다. 이어서 기관지절개술을 시행하였으며 체온을 36-37℃ 되게 열판을 이용하여 조절하였다. 쥐를 뇌 정위 고정 장치에 두고 머리를 45°숙여 NTS를 노출시킨 다음 약물을 10초간에 걸쳐 80nl주입하였다. 결과 : 인공 뇌척수액을 주입하면 동맥압의 변화가 거의 없었으나 동량의 GABA를 NTS에 주입하면 동맥압이 증가하였다. GABA에 의해 동맥압이 증가된 상태에서 반대측 NTS에 lidocaine을 주입하여 한쪽 기능을 억제시키면 동맥압이 더욱 증가하였다. 또한 lidocaine주입 후 반대쪽의 건전한 NTS에 GABA를 재차 주입하면 동맥압 증가가 적었다. 그리고 GABA를 NTS에 주입 후 정맥으로 nitroprusside를 주입하면 GABA 주입이 없는 대조군에 비해 동맥압 감소가 더 컸으며, lidocaine으로 마취하여 한쪽 NTS의 기능을 차단한 후 반대쪽 건전한 NTS에 GABA를 주입한 경우는 동맥압 감소가 적었다. 동일한 방법으로 lidocaine을 주입한 후 phenylephrine으로 승압을 시키면 동맥압 증가가 적었다. 압감수성 반사는 NTS에 GABA를 주입하거나 또는 반대편 NTS를 lidocaine으로 마취하여 기능을 억제시킨 경우에 둔화되었다. 결론: NTS에서 GABA가 동맥압의 조절 인자로 작용하며, 양쪽 NTS는 상호작용하고 있는 것으로 보인다. The nucleus tractus solitarius (NTS), the site of termination within the brain of baroreceptor afferent fibers, has been shown to be involved in the regulation of arterial pressure (AP). Many neuroactive substances present within the NTS have been shown to be involved in this process, although the manner in which any specific neurotransmitter acts physiologically in the regulation of AP has not been completely elucidated. The present study was intended to clarify the mechanism of action of GABA in the NTS and also to examine the cardiovascular response to inhibition of the contralateral NTS by lidocaine. Male Wistar rats weighing 300-500 g were employed for the experiment. The femoral artery and vein were cannulated to record the arterial pressure (AP) and to inject nitroprusside or phenylephrine, respectively. The tracheotomy was performed and body temperature was kept to 36-37℃. Rats were mounted in a stereotaxic frame with the head flexed downward to an angle of 45°. After the NTS was exposed. GABA or lidocaine was microinjected into the NTS in a volume of 80 nl over 10 seconds through a glass micropipette (outer diameter of the tip 50 ㎛) connected to a 1 ㎕ Hamilton microsyringe. The results obtained are summarized as follows. Microinjection of artificial CSF into the ipsilateral NTS did not alter basal AP. In contrast, microinjection of the same volume of GABA into the NTS produced a significant increase in the AP. The results presented thus far indicated that the volume injected did not affect AP. In animals with elevated AP by GABA injection, injection-of lidocaine into the contralateral NTS resulted in a further increase in AP. After the contralateral NTS was inhibited with lidocaine. injection of GABA into the NTS produced a less increase in AP. After microinjection of GABA into the NTS, the nitroprusside administered i.v. accentuated the increase of AP but not after microinjection of lidocaine into the contralateral NTS. Similar results were obtained with i.v. injection of phenylephrine after pretreatment of lidocaine into the NTS. The baroreflex sensitivity was reduced by microinjection of GABA into the NTS or microinjection of lidocaine into the contralateral NTS. These results suggest that alterations in GABA-mediated neural transmission in the NTS contribute to the regulation of AP and the NTS of both sides have a mutual interaction.

再生펄프를 利用한 카르복시메틸셀룰로오스의 製造(Ⅱ) : CMC의 物性 測定 Physical Charateristic of CMC

崔正憲,趙炳默,吳正壽 동국대학교 생명자원과학대학 연습림 1993 연습림논문집 Vol.- No.3

Carboxymethylation of recycled pulp was investigated. For both recycled pulp and dissolving pulp was carboxymethylated by the organic solvent method and tested some industrial analyses, water solubles content, low concentration of NaCl solution solubles and acid hydrolysis. The water solubles content depend on degree of substitution, and low concentration of NaCl did not affected solubilities of the CMC. Prehydrolysis of CM groups prior to reaction with L­cystein, we can obtain the residual unsubstitued anhydroglucose(USAG). The lower amount of USAG in recycled pulp, compared to theorecal data, was suggested that the recycled pulp should obtain the more CM group in the same conditions.

보존적 치료로 회복된 망경색에 의한 급성복증 1예

김정념,이숭환,김정식,김진호,배윤오,박성규,윤상정,한현영,이헌영 충남대학교 의과대학 의학연구소 2003 충남의대잡지 Vol.30 No.1

Omental infarction, the end result of impaired perfusion to the greater omentum, is a rare benign self-limiting clinical entity. The main clinical symptom is non-specific localized abdominal pain with a moderately raised white blood cell and erythrocyte sedimentation rate. These findings often mimic an abdominal surgical emergency. This condition is often misdiagnosed as acute appendicitis or cholecystitis. The characteristic feature of CT scan and ultrasonography provide non-invasive diagnosis in most patients with omental infarction. We report a case of patient whose CT scan showed the characteristic finding of omental infarction. The patient was improved spontaneously only with conservative care.

노인복지 만족요인분석과 지방정부의 정책방향

김정헌,오현숙,송건섭 한국정책학회 2004 韓國政策學會報 Vol.13 No.1

노인복지만족도에 영향을 미치는 요인으 무엇이며, 지방정부는 어떤 역할을 해야하는가?를 분석하였다. 노인복지만족도에 가장 영향력 있는 변수는 인구학적 변수중에는 건강수준 및 종교요인, 개인 및 환경요인은 가족관계, 자원봉사, 노인공경, 여가활동 등으로 나타났다. 노인복지 만족도를 향상시키기 위해서는 단편적인 서비스를 제공하는 것이 아니라 노인의 개인적?환경적 요인을 고려하여 서비스 체계를 연계하는 복합적이며 종합적인 서비스 대책이 중요하다. 이를 위해서 정부, 지역사회, 노인, 노인 복지 담당기관 및 서비스 전달자, 사회복지사 등이 연계적으로 협력하는 과정이 필요하다. 단기적으로 고립감 해소를 위한 전문상담기관 네트워크 구축, 사회교육, 규칙적인 운동, 종교활동의 기회를 제공할 수 있는 프로그램 개발, 사교활동을 할 수 있는 문화공간의 마련, 가족관계의 질을 향상시키기 위한 가정생활교육 프로그램 실시 등이 필요하다. 장기적으로 저소득 노인을 위한 자립지원정책, 지원사업도모, 노인강사은행 구축, 노인복지카드제도 실시 등의 정부차원의 정책적인 노력의 전개가 필요하다.

Carbamoylethyl Starch의 製造와 종이 製造時 添加效果에 관한 硏究

尹世永,崔正箕,鄭文箕,趙炳默,吳正壽 동국대학교 생명자원과학대학 연습림 1995 연습림논문집 Vol.- No.4

Recently, paper strength properties come up to be lowered by increasing ratio of utilization of recycling paper. In order to overcome these problems, strengthening agents which may cause enviromental problems have been used. Therefore, acrylamide was added to starch which is a cheap natural polymer, carbamoylethyl starch(CES) with high activity was prepared, and so the applicability as a paper additive was examined. The results are following; FT-IR spectra of CES of which degree of substitution was 0.25 showed strong C=O band at 1680㎝^-1 which corresponds the carbonyl group n amides(amide Ⅰ). Analysis of bravender viscosity showed that cooking start point of CES is 60℃ and instant viscosity is 830 B.U.(bravender unit). Effect of carbamoylethl DS on strength properties was resulted that CES of DS 0.20 appeared to be the best choice for making handsheets from KOCC with good overall strength properties, and it was selected as standard sample. Effect of pH on strength properties was obvious for their increasing values as decreasing pH. Also, a 5-fold increase in size rate as well as significant increase in wet-tensile strength were obtained in handsheets from KOCC by 3% wet-end addition of CES.

한국인 몸쪽 정중-자신경연결(Martin-Gruber anastomosis)의 해부학적 연구

이규석,김호정,권오헌 關東大學校 醫科大學 醫科學硏究所 2004 關東醫大學術誌 Vol.8 No.2

This study was performed to clarify the morphological characteristics of the Marin-Gruber anastomosis(MGA) in Korean adults. Dissection with surgical microscope was carried out in 95 cadaveric upper limbs. MGA was found in 36 upper limbs(37.9%). These anastomosis were classified to the four types. Type Ⅰ is the communication between the anterior interosseous nerve and the ulnar nerve(n=7, 19.4%). Type Ⅱ is the communication between the median nerve and the ulnar nerve(n=14, 38.9%). Type Ⅲ is the communication between the muscular branches distributing to the flexor digitorum profundus muscle(n=7, 19.4%). Type Ⅳ is the mixed patterns of type Ⅰ and Ⅲ or type Ⅱ and Ⅲ(n=8, 22.2%). The anatomical frequency of MGA in Korean adults was found to be higher than other races except in Russian. The levels of the anastomosis from the line connecting epicondyles of the humerus were average 4.8(range 0.6-8.8) cm at the median nerve and average 5.6(range 2.5-12.2) cm at the ulnar nerve. The thickness of the communicating branches was average I.2(range 0.4-2.1) mm. These metric data may be a guide to hand surgeon dealing with the electrodiagnosis and surgical practice.

지난 2년간의 학회지 "신경정신의학" 심사 평가보고

김찬형,김세주,김도관,김성곤,박원명,송동호,박용천,이영문,오강섭,정영철,이상열,김주한,이동영,이헌정,함병주,김율리,김문두,김정진,이강욱,천근아,김재진,홍진표,홍승철 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.6

Monochorionic Triamniotic Triplet Pregnancy Following Assisted Reproductive Technology and Radiofrequency Ablation for Selective Reduction

( Jeong-heon Lee ),( Su-hyun Oh ),( Ah-reum Hong ),( Young-ju Jeong ),( Sung-nam Cho ),( Dong-hyu Cho ) 대한주산의학회 2018 Perinatology Vol.29 No.4

In assisted reproductive techniques, monozygotic twinning is not influenced by the trial of reducing the number of embryos transferred. We present extremely rare case of monochorionic triamniotic triplet pregnancy following in vitro fertilization and two-embryo transfer. During the first trimester, the crucial ultrasound findings of monochorionic triamniotic triplet pregnancy are three distinct amniotic sacs forming a triangle or ipsilon zone within a single chorionic cavity. After prudential counseling about the potential risk of a monochorionic triamniotic triplet pregnancy with the patient, selective reduction of two fetuses via radiofrequency ablation was performed. We report a case of selective reduction for monochorionic triamniotic triplet pregnancy using radiofrequency ablation at 12 weeks’ gestation and obstetric progression after radiofrequency ablation was uneventful until 20 weeks’ gestation.