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Urechis unicinctus 난세포의 인공수정에 의한 구조적 변화
권혁제,김완종,신길상 순천향대학교 1994 논문집 Vol.17 No.3
The artificial insemination in Urechis unicinctus oocyte revealed some fine structural changes under electron microscope. The degradation of surface coat, retraction of microvilli, fusion of cortical granules with oocyte membrane are the events of fine structural changes after the fertilization. At fertilization, the cortical granules of oocyte are transported from the inner cortex toward oocyte membrane. After the fusion, the contents of cortical granules are discharged into the perivitelline space, the extracelluar space which in future develops into fertilization membrane. There are some indications that the fertilization occur on the microvillous tip in U. uicinctus. Under light microscope, one of the evidences on the fertilization was the formation of fertilization cone, which seemed to sperm entry site, on membrane of round mature oocyte.
유전자 재조합 사람 IFN-beta인 제네베타와 베네세린의 생물학적 활성의 비교
하종천,이협준,박봉환,김진숙,유대근,남상윤 전주대학교 자연과학종합연구소 2003 전주대학교 자연과학연구소 학술논문집 Vol.15 No.1
Background: Recombinant IFN-beta products have been approved for the treatment of several diseases. Recently, Inbionet, Co. has successfully developed rhIFN-beta product, Genebeta. This study was performed in a purpose of confirming the biological activity of Genebeta by comparison with another recombinant IFN-beta, Beneserin which was already approved. Methods: In vitro antiporliferative activity, regulation of MHC class I expression, antiviral activity, regulation of natural killer cell cytotoxicity were studied for functional comparison of these two rhIFN-beta products. Results: Proliferation assay data showed that two recombinant IFN-beta inhibited T cell and Daudi cell proliferation to a similar extent. When antiviral activity was compared, there was no significant difference between them. The treatment of these two rhIFN-beta also resulted in a similar level of upregulation of class I expression on the surface of A549 cells. Cytotoxicity experiment against tumor cells revealed that both of rhIFN-beta could enhance NK cell cytotoxicity to comparable level. Conclusion: All comparison data indicated that rhIFN-beta products, Genebeta and Beneserin have comparable potentials as a biological response modifier.
목제품만들기 단원의 수행평가를 위한 포트폴리오 자료 개발
이종오,이상혁 韓國實科敎育硏究學會 1999 實科敎育硏究 Vol.5 No.2
The purpose of this study was to develop and identify the effects of portfolio materials for performance assessment on the unit of wooden ware making practical arts in the primary school. In this study, the researcher was analyzed the literatures which was related to portfolios, and created the elements and items of performance assessment, and developed portfolio materials. The results of the study were as follows: (1) After the portfolio materials of practical arts applied to lesson of the woodenware making unit, the results of learning achievement test showed a level by averages 80.8%. The portfolio materials improved the efficiency of performance assessment, and effected on the increasing performance ability in practical arts. (2) After using portfolios, in the results of the learning attitude test of students, seven items of affective domain consist of pleasure during the practical arts education, value of nature, attitude of using tools safely, feeling of satisfaction in the result of practices, confidence in the working of wood-working tools, continuous practice of the practical exercise, attitude of make and using goods of life, which used portfolio materials effected on the increasing learning achievement level.
오영상,이은우,정종혁,문승원,김수현,김동한,양혁승,박정환,박경옥,강성수,이영직 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.2
Tracheobronchopathia osteoplastica is a rare disorder of unknown cause characterized by the projection of numerous bony or cartilaginous submucosal nodules into the tracheobronchial lumen with sparing of the posterior membranous portion of tracheobronchial tree. In the past, most of the cases were diagnosed as secondary finding at autopsy. Nowaday, the key component of the evaluation is flexible fiberoptic laryngoscopy and bronchoscopy, which typically demonstrates irregular spicules of subrnucosal bone and cartilage projecting into the tracheobronchial lumen and causing various degrees of airway obstruction. A 45 years old man was visited Sunchon St. Carollo hospital due to discomfort on throat. We saw several nodules just below vocal cord via laryngoscope. The computed tomography revealed multiple small calcified nqdules on trachea and both main bronchi. Pathologic finding of bronchoscopic biopsy showed abnormal proliferation of bony and cartilagious nodules in the tracheal submucosa. These fingdings were consistent with tracheobronchopathia osteoplastica. We report here on a case of tracheobronchopathia osteoplastica with review of literature.
젊은 남자에게 발생한 통상성 간질성 폐렴과 동반된 폐암 1예
박종숙,이준혁,박성우,장안수,박춘식,박재성,백상현,고은석,신화균 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2
Usual interstitial pneumonia(UIP) is relatively rare disease of lung parenchyme under the age of 50. Lung cancer is reported to occur as a complication of UIP, but has not been reported in young age patient with UIP in Korea. A 35-year-old man was admitted to the hospital because of dyspnea, cough and mild fever. He had been suffered from dyspnea during 3 years. The dyspnea worsened recent 1 month ago. He had been treated with pneumonia at another hospital during 4 months before this admission. Chest radiographs and High resolution CT showed subpleural and basal dominant reticular opacities in both lung with no change until now. He was smoker and his occupation was car engine-man dealing with benzene. UIP is suspected by history and radiologic findings. Operation for open lung biopsy was performed to obtain lung specimen via video-assisted thoracoscopic surgery. Patient's pathologic examination showed UIP combined with adenocarcinoma in RLL superior segment and posterobasal segment and RLL lobectomy was done. After operation, the patient has been in cancer free condition so far. We report a case of UIP combined with lung cancer in young man with brief review of the literature.
섬유강화 고분자 복합판의 기계적 성질에 미치는 섬유길이와 섬유함유율의 영향
이상동,김혁,허업,최종대,이동기 조선대학교 에너지.자원신기술연구소 1997 에너지·자원신기술연구소 논문지 Vol.19 No.2
This paper describes effect of chopped strand length fiber content and moisture absorption on mechanical properties of fiber-reinforced polymeric composites. It was extrusion compounded long fiber-reinforced polypropylene containing 20, 30 and 50 percent and short fiber-reinforced ABS and PAS containing 30 percent b37 the weight of glass fiber. The test methods of ASTM D638, D3410-87 and D79OM are applied for tensile, compressive and bending tests respectively. The results show that, in the case of 0.2% moisture absorption, the residual strength decreases dramatically.
모티리움 엠정(말레인산돔페리돈 12.72 mg)에 대한 한미 돔페리돈정의 생물학적 동등성
곽손혁,우종수,황성주 충남대학교 약학대학 의약품개발연구소 2002 藥學論文集 Vol.17 No.-
Bioequivalence of two domperidone maleate tablets, test drug (Hanmi Domperidone^ⓡ tablet: Hanmi Pharmaceutical Co.) and reference drug (Motilium-M^ⓡ tablet: Jassen Korea Pharm. Co.), was evaluated according to the guidelines of Korea Food and Drug Administration (KFDA). Twenty four healthy male volunteers were divided randomly into two groups and administered the drug orally at the dose of 20㎎ as domperidone in a 2×2 crossover study. There was a week washout period between administrations. Blood samples were taken at predetermined time intervals for 48hr and the plasma concentration of domperidone was determined by a HPLC method. AUC_0-48hr (area under the plasma concentration-time curve from time zero to 48hr), C_max (maximum plasma drug concentration) and T_max, (time to reach C_max) were estimated from the plasma drug concentration-time data. Analysis of variance (ANOVA) revealed no difference in AUC_0-48hr, C_max and T_max between two products. The apparent differences of these parameters between two products were less than 20% (i.e., 1.047, -0.416 and 9.347% for AUC_0-10hr, C_max and T_max, respectively). The powers (1-β) for AUC_0-48hr, C_max and T_max were over 0.99. Minimal detectable differences (Δ) at α=0.05, 1-β=0.8 were less than 20% (i.e. 11.15, 10.21 and 18.13% for AUC_0-10hr, C_max and T_max respectively). The 95% Confidence intervals (δ) for these parameters were also within ±20% (i.e. -5.49≤δ≤7.58, -6.39≤δ≤5.57 and -1.28≤δ≤19.95 for AUC_0-10hr, C_max and T_max, respectively). These results satisfied the criteria of KFDA guidelines for bioequivalence, indicating the two tablets of domperidone maleate were bioequivalent.
최종환,엄혁,임태형,김승수,양순용,이병룡,안경관 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-
The hydraulic excavator has been a popular research object for automation because of its multi-workings and economic efficiency. When it works crane tasks, most of disasters happen. The stability of the excavator having crane function has a close relation with excavator's posture, motion and load. In this paper, the stability of tipping-over has been analysed using Zero Moment Point(ZMP),
연약점토상 자갈성토지반에 대한 반복재하시 지반의 거동에 관한 연구
임종석,정상균,하혁 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-
When the band load effects on the surface of soil ground, the characteristics of underground stress vary from the equipment load and the ground condition. The experimental data of the underground stress occurring on the weak stratum can be more accurate on the estimation by running the equipment and these can be applied to a counterplan for the improvement of appropriate construction equipment.