제초제 2,4-D가 흰쥐 소장 점액질에 미치는 영향에 관한 조직화학적 연구

신인성,정길남,조운복 부산대학교 사범대학 과학교육연구소 2007 科學敎育硏究報 Vol.34 No.-

제초제인 2,4-D가 십이지장샘, 십이지장, 회장 및 공장 술잔세포내 점액질에 미치는 영향을 규명하기 위하여, 성숙한 흰쥐에 제초제 2,4-D 액제를 경구적으로 투여하며 중독시킨 후 3시간군, 6시간군, 12시간군, 24시간군, 48시간군, 72시간군, 96시간군 및 120시간군 별로 나누어 점액샘 및 술잔세포내 점액질 성상을 alcian blue pH 2.5 염색법, alcian blue pH 1.0 염색법, PAS 염색법, alcian blue pH 2PAS 염색법, alcian blue pH 1.0-PAS 염색법 및 aldehyde fuchsin pH 1.7-alcian blue pH 2.5 염색법으로 검색하여 관찰하였다. 십이지장샘내 중성점액질 양은 농약투여 후 12시간군부터 96시간군까지 현저한 감소를 보였으며, 감소된 중성점액질 양은 농약투여 후 120시간군에서 회복되었다. 농약투여 후 소장 술잔세포내 점액질 감량은 음모상부 및 은와저부 쪽에서 더 심하였고, 산성점액질의 감량이 중성점액질의 감량보다 매우 더 심하였고, 회복도 산성점액질보다는 중성점액질쪽에서 더 빨랐다. 장기별로는 십이지장 술잔세포가 제일 심한 영향을 받았고, 다음 공장 배상세포이었으나 회장에서는 현저하지 않았다. 소장에 있어서 산성점액질의 가장 현저한 감소는 십이지장에서 농약투여 추 12시간군, 24시간군 및 48시간군 또는 공장에서 농약투여 후 24시간군과 48시간군이었으며 현저한 감소는 십이지장에서 농약투여 추 3시간군과 6시간군, 공장에서 농약투여 후 12시간군 그리고 다소 현저한 감소는 회장에서 농약투여 후 12시간군, 24시간군, 48시간군 및 72시간군이었다. 감소된 산성점액질 양은 십이지장 및 공장에서 농약투여 후 72시간군 또는 회장에서 농약투여 후 96시간군에서 점차적으로 회복되는 경향을 나타내었다. 중성점액질 양의 감소는 십이지장에서만 농약투여 후 12시간군, 24시간군 및 48시간군에서 현저한 감소를 나타내었으나 공장 및 회장에서는 중성점액질의 감소가 현저하지 않았으며, 감소된 중성점액질 양은 농약 투여 후 십이지장 및 공장에서 72시간군 또는 회장에서 96시간군에서 점차 회복되는 경향을 나타내었다. 소장융모 및 은와내 강 sulfated mucin을 분비하는 술잔세포와 sialomucin을 분비하는 배상세포가 농약투여 후 다같이 그 염색성이 감희되었고, 전자가 후자보다 더 심한 영향을 받았으며 회복되는 경향도 늦었다. 특히 공장에서는 sialomucin을 분비하는 술잔세포가 농약투여 후 12시간군, 24시간군 및 48시간군에서 증가되는 경향을 나타내었다. This experiment was performed to observe the effect of herbicide, 2,4-D, on the production, secretion and histochemical properties of the mucosubstances of the duodenal glands and goblet cells in the small intestine. Healthy adult rats weighing about 250~300g were divided into two groups normal and experimental. Each animal of experimental groups was administrated 2,4-D (187.5mg/kg) orally and sacrificed in 3, 6, 12, 24, 48, 72, 96 and 120 hours after 2,4-D administration. The mucous glands and the goblet cells of the small intestine were stained with alcian blue(AB) PH 2.5, AB pH 1.0, periodic acid Schiff (PAS), AB pH 2.5-PAS, AB pH 1.0-PAS and aldehyde fuchsin AF pH 1.7-AB pH 2.5. The obtained results were as follows : Marked diminution of neutral mucosubstances in the duodenal glands was noted up from 12 hours to 96 hours, and recovered gradually from 120 hours after 2,4-D administration. Decrease of both acid and neutral mucosubstances was noted to be considerable in the goblet cells of the small intestine after 2,4-D administration, especially of the upper willi and the basal regions of the crypts, and add mucins became more markedly diminished than neutral ones, while neutral mucins more strikingly recovered than add ones. In comparison with organs, e goblet cells of duodenum seemed to be most strikinly affected, next those of the ileum, but those of jejunum not affected markedly. The most remarkable decrease of acid mucosubstances was observed in the duodenum 12, 24 and 48 hours, in the jejunum 24 and 48 hours. Remarkable decrease of those observed in the duodenum 3 and 6 hours, in the jejunum 12 hours. Slight decrease of those observed in the ileum 12, 24,m 48 and 72 hours after 2,4-D administration. the decreased amount of acid mucins tended to be gradually recovered in the duodenum and jejunum 72 hours, in the ileum 96 hours after 2,4-D administration. The amount of neutral mucins was markedly diminished only in the duodenum 12, 24 and 48 hours after the administration, but neutral mucins was not diminished in the jejunum and ileum. The decreased amount of neutral mucins tended to be gradually recovered in the duodenum and jejumin 72 hours and in the ileum 96 hours after the administration. Stainability of the goblet cells with strong sulfated mucins and with sialomucins both in the intestinal villi and crypts was generally decreased after the administration. However, the former was more markedly affected than the latter. The tendency of recover appeared to be slow, especially the goblet cells with sialomucins in the jejunum 12, 24 and 48 hours tended to be increased after the administration.

스텐트 재협착 병변에서 약물코팅 풍선카테터과 약물용출 스텐트의 예후 분석

이두환 ( Doo Hwan Lee ),송종남 ( Jong Nam Song ),박신의 ( Sin Eui Park ),최남길 ( Nam Gil Choi ),한재복 ( Jae Bok Han ),김인수 ( In Soo Kim ) 한국방사선학회 2019 한국방사선학회 논문지 Vol.13 No.3

약물용출 스텐트(drug-eluting stents, DES)는 일반 금속 스텐트에 비하여 재협착을 현저하게 줄였지만, 여전히 관상동맥 스텐트 재협착은 비율이 높다. 2012년 11월부터 2016년 12월까지의 일 대학교병원 심혈관센터에서 경피적 관상동맥 스텐트 삽입술 후 관상동맥 조영술에서 스텐트 재협착 환자 187명 그룹 I (약물코팅 풍선카테터 사용, n=127명), 그룹 II (약물용출 스텐트 사용, n=60명)로 분류하여 치료효과, 주요심장사건, 사망 발생률, 심근경색, 표적병변 재개통술 그리고 스텐트 혈전등을 2년 동안 추적 분석하였다. 임상적 특성는 두 그룹간 차이는 없었고(21.1 ± 5.3 vs. 25.3 ± 9.6 mm, p<0.002), 혈관조영검사에서 약물코팅 풍선카테터 사용 그룹에서 스텐트 재협착 길이가 짧았다. 주요심장사건은 8.7%vs.10.0%, p=0.789, 사망발생률0%vs.0%,p=1.000, 심근경색 1.6%vs.6.7%, p=0.085, 표적병변 재개통술 8.7% vs. 10.0%, p=0.789 그리고 스텐트 혈전증 0% vs. 0%, p=1000에서 양군 간에 차이를 보이지 않았다. 약물코팅 풍선카테터가 약물방출 스텐트와 비교하여 2년 추적 검사 결과 주요심장사건에서 차이가 없었고, 약물코팅 풍선카테터는 스텐트 재협착 병변에서 약물방출 스텐트와 함께 선택할 수 있는 좋은 치료방법이라고 사료된다. Although the development of Drug-eluting stent (DES) improved the ISR significantly more than the Bare metal stent (BMS), the coronary stent restenosis (ISR) treatment still has a high recurrence rate. This study is compared the efficacy of DEB with that of DES implantation in patients with ISR. Among 4,316 patients who underwent coronary stent implantation at the Chonnam National University Hospital between November 2012 and December 2016, 187 patients developed ISR on follow-up coronary angiography (66.3 ± 11.0 years, 123 males) were enrolled and divided into two groups according to revascularization method as group I (DEB group; n= 127) and group II (DES group; n= 60). Primary end point was defined as major adverse cardiac events (MACEs), composite of cardiac death (CD), myocardial infaction (MI), target lesion revascularization (TLR) and stent thrombosis (ST) during two-year follow-up between the two groups. There were no differences in the baseline characteristics and angiographic findings except that prevalence of device length was shorter (21.1 ± 5.3 vs. 25.3 ± 9.6 mm, p<0.002) in group I.Two-year MACE were not different in the two groups (8.7%vs.10.0%, p=0.789). The incidences of cardiac death (0%vs.0%, p=1.000), MI (1.6%vs.6.7%, p=0.085), TLR(8.7% vs. 10.0%, p=0.789) and ST (0% vs. 0%, p=1000). DEB demonstrated comparable risk reduction for MACEs compared with DES in patients with ISR during two-year follow-up. DEB might be good alternative for the treatment of ISR in patients with ISR

효율적인 질의 처리를 위한 메타 해석기의 구현

남인길,이두한 대구대학교 산업기술연구소 1992 産業技術硏究 Vol.11 No.-

In this paper, we design and implement a meta-interpreter which can manage point query, range query, and list query in PROLOG database environment that is supported multi-key indexing. Also, by maintaining meta-knowledge for already loaded facts in meta-knowledgebase, this system can avoid the duplicated loads of same facts that decrease performance of query processing.

객체 지향 데이터베이스에서 쓰기비용을 감안한 다중 선채취기법

남인길,도용석 大邱大學校 科學技術硏究所 1998 科學技術硏究 Vol.5 No.3

This paper presents a set of techniques for improving the efficiency of cache in object oriented database management system. The proposed method is divided into two steps. As the first step, we analyze the disc access frequency and pattern for various queries. Then, based on the analyzing results of the first step, we make prefetching of certain pages which have high degree of access frequency. In addition to this method, in this research, we propose a multiple prefetch caching algorithm that is based on the previous method. Basically this method delay page replacement by considering write cost for pages with information modification. Simulation results show that the proposed method consistently outperforms existent algorithms.

블록 정렬과 선두이동법을 이용한 VF산술부호에 의한 데이터 압축

李振鎬,南寅佶 慶一大學校 1997 論文集 Vol.14 No.2

In this paper, we present the loseless data compression using block-sorting, move to front(MTF) and arithmetic code based on run-length model. First, the substrings which is parsed into length N are shifted one by one symbol, Second the cyclic shifted rows are sorted substring. As the sequences by MTF tend to have a long consecutive symbol, the coding based on run-length model is efficient to compress the transformed sequence. Then the preprocessed sequence is coded using VF(variable to fixed) arithmetic code which can be limited the error propagation in one block. The key point is how to split the fixed length codeword in proportion to symbol probabilities in VF arithmetic code. We develop the new VF arithmetic coding that split completely the codeword set for arbitrary source alphabet. In addition to, an extended representation of symbol probability is designed by using recursive Gray conversion. The performance of proposed method is compared with other well-known source coding methods with respect to entropy and compression ratio.

세선화를 위한 4 근접 연결값에 의한 알고리즘

원남식,남인길 대구대학교 산업기술연구소 1994 産業技術硏究 Vol.13 No.-

Feature extraction generated by thinning algorithms, are often used to represent objects in a binary digital image for shape analysis and classification. Many thinning algorithms have been proposed to date. They differ from each other because of the many definitions of digital skeletons and the failure to utilize available analytical tools in their design and performance evaluations. In this paper, New algorithm for the thinning is proposed. The key principle of the algorithm is to process object pixel by the 4 Neighbors Connectivity Value.

약물 용출 스텐트와 일반 금속 스텐트에서 혈전증에 대한 발생과 예후

김인수(In-Soo Kim),최남길(Nam-Gil Choi),장성주(Seong-Joo Jang),한재복(Jae-Bok Han),장영일(Young-Ill Jang) 한국콘텐츠학회 2012 한국콘텐츠학회논문지 Vol.12 No.7

급성심근경색증 환자에서 약물 용출 스텐트(drug-eluting stents, DES)는 일반 금속 스텐트(bare-metal stents, BMS)에 비해 재협착은 감소하지만 구조적인 특성으로 스텐트 혈전증(stent thrombosis, ST)이 증가한다고 알려져 있다. 이에 본 연구에서는 ST의 발생빈도, 임상양상, 그리고 1년간 예후를 알아보고자 하였다. 대학병원 심혈관센터에서 급성심근경색증으로 관상동맥 중재술을 받은 2,667명에서 스텐트 혈전증이 발생한 환자 80명을 대상으로 DES-ST를 I군(n=57), BMS-ST(n=23)를 II군으로 분류하여 양군 간의 특징을 분석하였다. 양군간의 ST는 I군에서 57명(2.7%)과 II군에서 23명(4.3%)로 양군 간에 유의한 차이는 없었다(p>0.064). ST의 유형으로는 acute ST는 I군5(8.8%), II군3(2.3%), subacute ST는 I군 29(50.9%), II군14(60.9%), late ST 는 I군11(19.3%), II군2(8.7%), very late ST는 I군12(21.1%), II군4(17.4%)로 양군간의 차이는 없었다(p>0.605). DES와 BMS를 삽입 후 1년 예후에 미치는 인자로는 ST(OR 8.166 95% CI 2.825-23.608 p<0.001), 좌심실구혈율(<40) (OR 6.409 95% CI 2.422-16.955 p<0.001), 나이(≥75세) (OR 4.979 95% CI 1.946-12.744 p=0.001) 이었다. ST의 발생율은 양군 사이에 차이가 없었고, 1년 예후에 미치는 인자로는 ST의 발생, 좌심실 구혈률의 저하 및 환자의 연령 등 이었다. Drug-eluting stents (DES) have significantly reduced in-stent restenosis, compared to bare-metal stents (BMS). However, there remains concern for the increased risk of stent thrombosis (ST) associated with DES. The present study sought to evaluate the incidence, clinical characteristics and outcome of ST in patients with acute myocardial infarction (MI) during a 1-year follow-up. 80 patients who developed ST were divided into 2 groups according to stent type: group I (DES-ST, n = 57 ) and group II (BMS-ST, n = 23 ). There were no differences between group I and II in the overall incidence of ST (2.7% vs. 4.3%, p=0.064) and in the incidence of each type of ST: acute ST (8.8% vs. 2.3%), subacute ST (50.9% vs. 60.9%), late ST (19.3% vs. 8.7%), and very late ST (21.1% vs. 17.4%) (p=0.605). Predictors of 1-year mortality were the occurrence of ST (OR 8.12, 95% CI 2.83-23.61, p<0.001), left ventricular ejection fraction<40% (OR 6.41, 95% CI 2.42-16.96, p<0.001), and age≥75 years (OR 4.98, 95% CI 1.95-12.74, p=0.001).

객체지향데이타베이스에서 접근 패턴을 감안한 적응 선채취 캐슁 기법

사공준,남인길 大邱大學校 科學技術硏究所 1995 科學技術硏究 Vol.2 No.2

If the cache can accurately predict future disk references, access speed will be improved through the use of prefetching. In this paper, the various caching techniques are compared and the queries in an Object-Oriented DataBases are classified into several access patterns. Then we propose an Adaptive Prefetch Caching Method in which both the access patterns of queries and prefetching of the clusters are taken into account. The simulation results for the performance evaluation show that the proposed prefetchng method using the information of the access patterns in queries can achieve better cache performance.

항목기반의 인터넷 쇼핑 시스템 구현

김종완,백영욱,남인길 대구대학교 과학기술연구소 1998 科學技術硏究 Vol.5 No.2

An internet shopping system is presented on which a manager can add, modify. delete computers and peripheral devices. and customers can choose and buy some products. The system gives customers a chance to choose the products once again by putting them in a cart. In this paper, not only a simple shopping mall but also the basic database for internet marketing are implemented well. For the purpose of implementing this marketing system, every components including customers' buying informations to be recorded in marketing database, the approach to customers. marketing strategy and methodology have been restored the information on potential customers as well as current one. The proposed method implements an item-based product sale system, and therefore it can provide an easier shopping service than the existing internet shopping malls.

한글 메타-언어의 설계 및 구현

이두한,황하응,남인길 대구대학교 산업기술연구소 1993 産業技術硏究 Vol.12 No.-

In this paper, we design and implement a korean meta-language which can use easily than a high level programming language. The meta-language includes functions of general purpose and description language. It is easy for novice to use for programming and debugging. Especially, this paper is reflected characteristic of korean language.