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Jin‑Sung Park,Joo‑Il Kim,Hyun‑Jin Lim,Soo‑Kyung Ryu,Euna Kwon,Kang‑Min Han,Ki‑Taek Nam,Han‑Woong Lee,Byeong‑Cheol Kang 한국유전학회 2020 Genes & Genomics Vol.42 No.9
Background p19arf, primarily known as a tumor suppressor, has also been reported to play an essential role in normal development of mouse eyes. Consistently, lack of p19arf has been associated with ocular defects, but the mixed background of the knockout (KO) mouse strain used raised a concern on the accuracy of the phenotypes observed in association with the targeted gene due to genetic heterogeneity. Object We carried out a study to investigate into the efect of genetic background on the manifestation of p19arf KO associated phenotypes. Methods We characterized the phenotypes of novel p19arf KO mouse lines generated in FVB/N and C57BL/6J using a transcription activator-like efector nuclease (TALEN) system in comparison to the reported phenotypes of three other p19arf-defcient mouse lines generated using homologous recombination. Results Ninety-fve percent of FVB/N-p19arf KO mice showed ocular opacity from week 4 after birth which worsened rapidly until week 6, while such abnormality was absent in C57BL/6J-p19arf KO mice up to the age of 26 weeks. Histopathological analysis revealed retrolental masses and dysplasia in the retinal layer in FVB/N-p19arf KO mice from week 4. Besides these, both strains developed normally from birth to week 26 without increased tumorigenesis except for a subcutaneous tumor found in a C57BL/6J-p19arf KO mouse. Conclusion Our fndings demonstrated surprisingly variable manifestation of p19arf-linked phenotypes between FVB/N and C57BL/6J mice, and furthermore between our mouse lines and the established lines, indicating a critical impact of genetic background on functional study of genes using gene targeting strategies in mice.
남경수,김희진,이태균 동국대학교 생명과학연구소 1995 생명과학연구논문집 Vol.2 No.-
To invesitigate the immunoadjuvant effect of Taesanbanseok-san(TBS), TBS was pretreated to Ballb/c mice for 10 days with intraperitioneally. After 10 days, haptenic antigen (VCR-BSA, vincristine-bovine serum albumin) complexed with Freund's complete adjuvant was immunized. The results are as follows. The antibody production in Balb/c mouse immunized with VCR-BSA was markably increased in the pretreated group of TBS compared with saline treated(control) group. The number of macrophage in Balb/c mouse immunized with VCR-BSA was considerably increased about 2.3 times in the pretreated group of TBS compared with control group. The lysozyme activity of macrophage in Balb/c mouse that was immunized with VCR-BSA was increased gradually in the pretreated groups of TBS compared with control group. In the TBS pretreated group, B cell proliferation was increased with a dose dependent manner. At the concentration of twenty microliter/well of TBS, B cell proliferation activity was most highest. On the other hand, in the T proliferation, TBS pretreated group had less considerable activity than B cell proliferation. These results may suggest that TBS will have immunoadjuvant effects on the cells which concerned with immuno mechanism.
電子商去來에서의 消費者保護를 위한 法的 問題點에 대한 考察 : 電子認證과 電子署名을 중심으로
남경두,이수진 건국대학교 경제경영연구소 2000 商經硏究 Vol.25 No.1
Electronic certification and electronic signature issues are a vital concern for developing electronic commerce, and a number of initiatives are underway in both the public and private sectors to ensure that businesses and consumers can engage in secure and reliable electronic communications and transactions in the global networked society. In recent years OECD Member countries have undertaken to develop and iMplement may create obstacles to the evolution of national and global information and communications networks and hinder the development of electronic commerce. Both governments and the private sector have recognized the need for international collaboration to develop and efficient and secure information infrastructure. This paper in this area has focused on electronic authentication and signature issues in order to protect consumers. The paper concludes that electronic authentication and signature consensus about specific policy and regulatory issues related to information and communications networks and technologies, including electronic authentication and electronic signature.
제산제 탄산수산화마그네슘의 최적 제조조건 추구 및 분체학적 성질
남진경,이계주 충남대학교 약학대학 의약품개발연구소 1999 藥學論文集 Vol.15 No.-
Magnesium carbonate hydroxide (hydrotalcite) was synthesized to pursue the optimum conditions having the highest acid consuming capacity by a Box-Wilson experimental design, and micromeritical properties of samples were evaluated by laser particle size analyzer, SRD, BET system, mercury porosimeter, and several adsorption capacity test. The optimum preparation conditions for hydrotalcite were as followwws: concentration of aluminum hydroxide and magnesium hydroxide 1.17mole, reaction temp. 82.6℃, reaction time 2.32hr, ratio of (Al(OH)_3/Mg(OH)_2 4.25, drying temperature 93.2℃ respectively, and its acid consuming capacity was 286ml/g. the neutralization curve shows that sample whose acid consuming capacity was the highest has the best neutralizing capacity and duration capacity. The crystalline form of the synthesized hydrotalcite was identified with a hexagonal system, and the d (003) spacing value of three samples was large. a part of alumina crystal form was shown at 2θ=18°, 38° in sample 3. The micromeritical properties of the synthesized hydrotalcite has no relation with an acid consuming capacity, and there was a tendency that the higher the acid consuming capacity is the larger the particle size and the narrower the size distribution. The values of pore invasive volume, pore area and specific surface area of sample 1 were small among three samples. Isotherm by BET system forms hyteresis loop and it shows the synthesized hydrotacite was porous. the pore diameter was about 10Å and it verifies mesopore. The adsorption capacity measured by methylene blue has no relation with acid consuming capacity. The adsorption of quinine sulfate in aqueous solutuion was identical with the Langmuir isotherm.
SVD 알고리즘 및 HMM을 이용한 얼굴 및 눈 패턴 검출
진경찬,김명남,신장규,손병기,조진호 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1
The studies about automatic pattern detection of the eye and face from the human image acquired by the CCD image sensor have good applicabilities in the industry, home automation, and data communication field. In general, pattern detection method consists of feature based matching and template matching. In feature based matching, the feature vector is extracted with DLM(dynamic linking matching), EBGM(elastic bunch graph matching), HMM(hidden markov model) matching and knowledge based matching using statistical characteristics. In template matching, in general, the template vector is extracted with PCA(principal component analysis). When these method applied in the face and eye detection, each method has its own merits and some disadvantage. Therefore, by combined utilization of SVD(singular value decomposition) and HMM algorithm, is expected that we can selectively make use of each methods advantage and it result in improved detection accuracy. In this paper, we proposed the method for face and eye detection, which was combined by the two algorithms, to be suitable for the high speed image processing using DSP chip or microprocessor. In the beginning, template matching was followed by a template extraction using batch SVD algorithm and then face pattern was classified and recognized by HMM algorithm which is one of feature based matching technique. Finally, eye pattern detection was performed by pattern search neural network utilizing eigeneye image.
환기정도에 따른 수술실용 신발 종류가 수술실 오염에 미치는 영향 : How to Choose Suitable Shoes?
남경동,정혜선,박영신,원진희,주미자,성화신,이지혜,이병희,조경숙,배재춘 한국의료QA학회 2000 한국의료질향상학회지 Vol.7 No.1
Background : Various types of protective footwear have been used to minimize bacterial contamination in operating rooms. In recent years, debate has arisen concerning the need for use of such protective footwear. This study was designed to provide useful data about choosing shoes most suitable for the surgical environment. Methods : Between November, 1999 and January, 2000, we performed this experimental study by comparing effect of three types of shoes (i.e., disposable shoescover, operating room-restricted shoes, and ordinary shoes) on bacterial contamination of operating rooms equipped with two different ventilation systems (i.e., high air-change, low air-change) respectively. Data were collected during two-hour sham operations in which subjects and their activities were strictly standardized. Bacterial flora were sampled from the study area floor and air colony-counts were measured. Results : In experiments involving high air-change ventilation system, there was a significant difference of floor contamination between three types of shoes, but no difference of air contamination. Under low air-change system, there was a significant difference of both floor and air contamination between three types of shoes. Conclusion : The results show that protective footwear would be unnecessary in the operating room with high air-change ventilation system, but it is important to choose suitable shoes carefully under low air-change system. Therefore, the use of outdoor shoes can be considered under high air-change system, but it would seem sensible to apply their first use in less bloody operations at the day surgery center or out-patient department to prevent transfer of body fluid into the outside environment.