Sodium Trans-Bis(methyliminodiacetato)Chromate(Ⅲ)의 두가지 다른 空間群 P1￣와 A2/n間의 相互 變換

李珍昊,宋柱昊,崔成山,郭相姬,吳美蘭,박성진,李揆旺,徐廷善,徐日煥 충남대학교 1996 忠南科學硏究誌 Vol.23 No.1

The structure of sodium trans-bis(methyliminodiacetato) chromate(Ⅲ), C_10H_14O_8N_2CrNa, has been elucidated with two space groups P 1-; a=8.9856(6), b=13.308(1), c=6.261(1)Å, α=76.38(1), β=110.361(9), r=107.394(6)˚, V=662(2)Å^3, Z=2, μ=0.47mn^(-1), d=1.831Mg/㎥, R=0.0295 for 1901 independent reflections with F^2>2σ(F^2), and A2/n; a=13.65(5), b=6.261(1), c=16.85(6)Å, β=113.05(1)˚, V=1324(7)Å^3, Z=4, R=0.0287 for 1013 independent reflections with F^2>2σ(F^2). There are two different asymmetric half molecules in triclinic system and one asymmetric half molecule in monoclinic system. The structures of three different molecules are very similar in conformations. The four carboxyl O atoms and the two imino N atoms in each molecule produce a distorted octahedral coordination geometry around the Cr atom. The average distances of Cr-O(carboxyl) and Cr-N(imino) are 1.956 and 2.061Å respectively. Molecules are held together by ionic forces. In this paper, it has been also shown that the cell constants, Miller indices, atomic coordinates, lattice directions and reciprocal lattices of the two space groups can be mutually transformed.

만성 요통환자의 복부 심부근과 표재근을 중심으로 한 운동 효과 비교

김진산,이창현,조미주,임연욱,정취산,김선엽 대한정형도수치료학회 2005 대한정형도수물리치료학회지 Vol.11 No.1

Objectives: To compare the efficacy of two types specific exercise intervention (deep and superficial abdominal muscle exercises) in the treatment of patients with chronic low back pain (CLBP). Design: A randomized, comparative, repeated-measures. Subjects: Twenty-four patients with CLBP (at least for 3 months), mean age±SD=51.58±16.21 (yrs). Methods: Twenty-four patients with this condition were assigned randomly to two treatment groups. Both first and second group underwent 3 weeks specific exercise treatment program. The first group specific trained for the deep abdominal muscles. The second group specific trained for the superficial abdominal muscles. Results: After intervention, the first group showed a statistically significant reduction in pain intensity and functional disability levels (p<.05). The second group showed no significant change in these parameters after intervention (p>.05). Conclusions: According to results, a "deep abdominal muscle exercises" treatment approach appears more effective than a "superficial abdominal muscle exercises" treatment in patients with CLBP.

유연하고 신속한 표면미세가공기술을 이용한 Micro-fluidic Channel 제작

김진산,성인하,김대은 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.4

Recently, the need for transporting and manipulating minute amount of fluids in microscale channels (so-called micro-fluidics) has been increasing, especially in biotechnology and biochemical processing. This work demonstrates that the so-called mechano-chemical process which consists of mechanical abrasive action combined with chemical process can be used to fabricate micro-fluidic channels more rapidly and cost effectively than other methods. In this work, capillary filling of fluids in micro-channels was investigated by theoretical approaches and experiments. From the experimental results, it is expected that a complex micro-fluidic system can be fabricated using the micro-fabrication technique and microsystem packaging method described in this work.

자궁경부 편평상피병소에서 인체유두종바이러스 감염과 Ki-67표출에 대한 연구

김창진,강상균,이종칠 순천향의학연구소 1997 Journal of Soonchunhyang Medical Science Vol.3 No.2

The squamous cell carcinoma of the uterine cervix is the most common malignant tumor among women in Korea. Since 1976, when a research result that human papillomavirus(HPV) infection played some role in the tumorigenesis of the uterine cervical carcinoma had been published, numerous reports supporting the result has been released. They reported that about 90% of the carcinoma had some relation with HPV infections. About 20 subtypes of HPV has been observed in the anogenital lesions. As subtypes of the virus can be grouped into three according to the potentiality of malignant tumorigenesis, high risk group (HPV16, 18), intermediate risk group(HPV31, 33)and low risk group(HPV6/11), it is very important to identify the subgroups in the precancerous and cancerous lesions of the cervix for either diagnosis or prognosis. When HPV infects the epithelial cells, it promotes cellular proliferation. The cellular proliferation can be evaluated by immunohistochemistry with the antibodies for proliferting cell nuclear antigen(PCNA) and KI-67. Because PCNA has long half-life, and can be detected 48 hours after completion of mitosis, an estimation of proliferating cells by PCNA could be inaccurate. The expression of Ki-67 antigen is more correct than PCNA for the evaluation of proliferating cells due to its short half-life and rapid degradaton after completion of the mitosis. This study was conducted to see the relation between subtypes of HPV and cell proliferation by in situ hybridization(ISH) and immunohistochemistry in 60 cases of squamous intraepithelial lesions(SILs) and invasive carcinoma of the uterine cervix. The results are as follows; 1. HPV was detected in 50 out of 60 cases (83.5%). 2. The subtypes HPV6/11, the low risk group, were detected in 78.2% and 4.5% of low grade SIL and high grade SIL respectively, while not detected in any of invasive carcinomas. 3. The subtypes HPV 16, 18, the high risk groups, were detected in 4.3%, 59.1% and 80% of low grade SIL, high grade SIL and invasive carcinomas respectively. 4. In normal squamous epithelium and squamous metaplasia, the cell fraction expressing Ki-67 were 13.5%±6.7% and 8.7%±3.5%, while in low grade SIL, high grade SIL and invasive carcinomas they were 35.8±7.9%, 66.8±11.8% and 84±13.4% resepectively. 5. There was no relation between HPV subtypes and cell fractions expressing Ki-67. Above results shows that subtypes HPV6/11 are prevalent in low grade SILs, while HPV16, 18 are common in the high grade SIL and invasive carcinoma. It seems that there is no correlation between the cell fractions expressing Ki-67 and subtypes of HPV, which suggests that cellular proliferation can be induced by other than HPV infections. As the cell fraction expressing Ki-67 increases according to the grade of SIL and invasiveness, it would be useful prognostic factor along with the identification of high risk HPV type in the uterine cervical squamous epithelial lesions.

회전자 구조에 따른 SRM의 토오크 특성해석

정도영,이상호,서진우,오홍석,최경호 三陟大學校 1997 論文集 Vol.30 No.1

The switched reluctance motor(SRM) has a simple rotor construction with no windings. It also has simple concentrated windings on the stator. Thus, it is expected to be a lower cost machine to manufacture than the squirrel cage induction motor. This paper presents an advanced rotor structure type, well-round rotor type in SRM. To design the improved SRM we have used FEM and studied and compared with each other. The static torque, instantaneous torque and average torque are more improved than that of typical rotor type which has been a lot of used for SRM.

한국체육대학교 학생들의 학교 시설과 학보에 대한 의견 조사

김혜영,김진호,김수잔 한국체육대학교 학생생활연구소 1997 學生生活硏究 Vol.- No.3

The purpose of this study was to identify the needs and wants of the Korean National University of physical Education students with respect to the university's facilities and gazette. In particular the study attempted to determine whether there are significant differences among the needs and wants of three groups of students -athletes, industry students, and regular students. A questionnaire consisting of questions about the university's bulletin board, library, swimming pool, computer room, convenience store, rest areas, and gazette was distributed in June 1996. Students from all grades and departments except the dance department, participated in the study. The data was analyzed by employing the Chi-square test (alpha = 0.05) and by using the SPSS-Window statistical package. Variables showing a statistical difference were further analyzed by examining the cross-tabulations of the three groups and their specific responses. As a result, the following conclusions were made: (1) There is a lack of bulletin boards, and the location needing a bulletin board the most is the front gate; (2) Students generally use the library to write a report for class, but there is a lack of books and journals in the library; (3) The swimming pool is not utilized well during non-class hours because its usage is limited to certain student groups and hours; (4) Athletes consider the hours, the regular students consider the lack of computers, and the industry students consider the processing speed of the computers as the most inconvenient factor in their utilization of the computer room; (5) Many students desire to purchase products which contain the university's logo; (6) There is a lack of rest areas where students can spend their free time resulting from a cancelled class; (7) Regular students tend to be more interested in university and circle news, while athletes tend to be more interested in sport news. Nevertheless, all students are interested in reading about how their alumni chose their career and about other universities' news.

原點選擇에 따른 構造因子의 位相變化 : Triclinic, Monoclinic, Orthorhombic System에서 Primitive이면서 Centrosymmetric인 Space Groups에만 適用 Only for Primitive and Centrosymmetric Space Groups of Triclinic, Monoclinic and Orthorhombic Systems

徐日煥,李珍昊,郭相姬,崔成山 충남대학교 기초과학연구소 1995 忠南科學硏究誌 Vol.22 No.2

Triclinic, monoclinic, orthorhombic systems에서 primitive이면서 centrosymmetric space group이면 8가지 對稱中心點中 任意의 한 點을 原點으로 指定하기 爲하여 3個의 structure factor에게 任意의 phase를 割當할 수 있음을 보였다. 이들 phase들은 direct method에서 structure factor의 phase를 決定해가는 basic set이 될 수 있다. In any primitive and centrosymmetric space group in the triclinic, monoclinic, or orthorhombic systems, arbitrary signs can be allocated to three reflections in order to specify the origin at one of the eight centers of symmetry. These signs form a basic set, from which more and more signed reflections emerge in the process of direct method.

한국 재래산양에서 Bovine Viral Diarrhea, Bovine Herpesvirus-1, Parainfluenza Type-3 바이러스에 대한 혈청학적 연구

한동운,권용국,문진산,윤소라,위성환,장환,탁동섭,이태욱,강문일 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.3

The 948 goat sera were serologically tested for ten pathogens including bovine viral diarrhea (BVD), bovine herpes virus type-1 (BHV-1) and parainfluenza virus type-3 (PI-3). By viral neutralizaion test, three pathogens including BVD virus, BHV-1, PI-3 were applied for screening each neutralizing antibody and its titration. Among 948 sera, there were 215 seropositives (22.7%) against BVD virus, 25 (2.6%) against BHV-1 virus, and 161 (17.0%) against PI-3 virus, respectively. In the seropositive cases to BVD virus, provincial prevalence of them were recorded as Gyeongnam(30.8%) for the highest one, while as Jeonbuk (15.8%) and Gyeongbuk(l6.7%) relatively for the lower ones. Among them, higher than 1:8 in antibody titration was classified as 74 cases (34.4%) which were suspected the cycle of its infection in their herds. Among the seropositives to BHV-1, it was relatively lower prevalence rate ranging from 1.7% to 6.7% that those of BVD virus and PI-3, but more importantly they were prevailing across the country. Most of the seropositive cases (42.9%) to PI-3 were classified as 1:4-1:16 in titration, but also distributed all around the country. The prevalence in goats varied according to areas (15.8 to 30.8%). Related to the provincial prevalence of three viral agents in Korean goats, it seemed that three viral pathogens would be directly or indirectly involving in various disorders as primary or secondary causative agents resulting in decreased productivity.

우수방사성의약품 생산시설 개발

신병철,정원명,박상현,이규일,박경배,박진호 한국약제학회 2003 Journal of Pharmaceutical Investigation Vol.33 No.2

Manufacturing facilities of the pharmaceuticals must meet certain level of the cleanness required so that foreign substances such as dust, moisture, heat, microorganism, or virus do not contaminate the product. In case of radiopharmaceuticals for medical treatment and diagnosis, not only should the operators and environment be protected from radiation but also need to be isolated from the foreign contaminant. Therefore, manufacturing facilities for radiopharmaceuticals must satisfy the design standards of both hot cell and clean room which are specified by GNP. However, standards of maintaining negative pressure for preventing spread of radioactive contaminant in isolated facilities conflict with the standards of maintaining positive pressure for keeping cleanness. To solve this problem, are pressure of hot cell was designed lower than in the adjacent area to meet standards of the radiation safety. To keep higher cleanness in certain part of the hot cell for filling, minimal relative positive pressure allows. In order to effectively maintain the cleanness that is required for production of Tc-99m generator, which takes 70% of whole demand of radiopharmaceuticals, the rooms placed in each side of production room are used as a buffer area and three lead hot cells are installed in production room. In this research, we established the appropriate engineered design concept for Tc-99m generator manufacturing facility, which satisfies both GMP cleanness standard for preventing particles, bacteria, other contaminants and the regulations of radiation safety for supervising and controlling the amount of radiation exposure and exhausted radioactivity. And the concept of multi-buffer zones is introduced to apply negative air pressure for hot cell with first priority and to continue relative positive air pressure for clean room.

한국 재래 산양에서 Leptospira spp.에 대한 혈청역학적 연구

한동운,권용국,문진산,윤소라,위성환,장환,탁동섭,이태욱,강문일 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.3

Between January 1999 and September 2001, 948 sera (120 from each province except 108 from Chungbuk) from 8 provinces were sampled from Korean goats. All the samples were serologically tested for Leptospira spp. By the microscopic agglutination test against four L. interrogans serovars including canicola, icterohaemorrhagiae, pomona and hardjo, 948 Korean goats were confirmed as 11 seropositives (1.2%) only infected with L. icterohemorrhagiae. All positive sera were collected from Gyeonggi (5), Gangwon (4) and Chungbuk (2). Titration of them were classified as 1:100 of 10 sera except one case with 1:200 from Gyeonggi. It was meaningful that the pathogen in Korean goats was mainly distributed in the northen part of the country. Consequently, the results in the study were confirmed and analyzed the recent status of infection of leptospirosisas zoonotic agentsome in Korean goats.