Protective Effects of N-acetylcystenine and Selenium against Doxorubicin Toxicity in Rats

Yeo-sung Yoon,Sun-don Kim,Min-hye Lee,Heung-shik S.Lee,In-se Lee,Je-kyung Sung,Eun-sung Park 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Effects of N-acetylcysteine and Selenium against Doxorubicin Toxicity in RatsEun-sung Park, Sun-don Kim1, Min-hye Lee, Heung-shik S. Lee, In-se Lee, Je-kyung Sung and Yeo-sung Yoon*

經營者開發의 理論과 展開方向에 관한 考察 : 大田地方의 企業體를 中心으로 Based on the enterprise firms in Daejon area

김선돈 충남대학교 경영대학원 1978 經營學論文集 Vol.5 No.-

The contemporary business administration is characterized by the fact that it is divided into three parts the capital provider who is in charge of financial resources, the working rank who provides management and labor, and the administrator who is in charge of executive funciton. From the administrator's point of view, the owner manager of the earlier capitalistic economy has been replaced by the "employed manager". And in addition to the factors mentioned above, other factors such as ever-changing situations from outside of the business and the tendency toward the division and specialization of task have forced the "professional manager" to come into existence. Korea, for one thing, has seen its industrial structure under way to rapid change and expansion with remakable rapidity as the result of the four Five-Year Economic Development Plans. However, the training of qualified business administrators is still short of fulfilling the task of producing enlightened man-power for business administration. This task is urgent since the modernization of the administration is essential to effective business management. This treatise conists of five chapters and eight sub-chapters, in which the writer tried to propose a principle of Business Administrative Development and its progressive course. I . Preface. Emphasis was laid on the necessity of training specialized business administrators who can cope with the rapidly changing situation both from outside and within the business firms themselves and on the need for establishment of preparedness for the international competition. Ⅱ. On Theoretical Disclosure of Business Administrative Development. In this chapter, the writer attempted to describe theoretically the importance of Business Administrative Development and its procedures in terms of technical aspect. Ⅲ. A Pragmatic Study of Business Administrative Development. In this chapter, the writer disclosed the results of his survey on the current trends of business administrative development in the manufacturing firms in Daejon Area. He also tried to analyze the outcome of the research survey. The problems found through the research-survey are as follow. The first is that the business administrative development is not realized as a way of coping with the depressive economy. The second is that the program for Business Administrative Development is not as effective as it should be. The third is that Business Administrators find too little time for participating in Educational Projects for Business Administration. Ⅳ. The procedure of Business Administrative Development. This chapter is devoted to the remedial ways found in the research-survey mentioned in the chapter Ⅲ, in order to propose effective procedural development programs which correspond to the enterprise environment. Ⅴ. Conculsions: This is a condensed summary of the treatise. Eight points for the improvement of the Business Administrative Development are provided in this chapter. The first is that the opportunity of participating in the administrative education program should be opened to all in management. The second is that a long-term man-power promotion program should be maintained in order to meet future demands. Thirdly, it is required that activities of an organization in charge of Administrative Education Program be strengthened. The forth is that The Education Program should be improved by means of case-study rather than class room lectures. The fifth is that specialized educators are required in the field of education mentioned above. The sixth is that a complementary measure should be also used to promote the participation by every member of the firm in management with a systematic purposes presented. The seventh points to the fact that desire for self-development on the part of the administrator himself is indispensable to the Administrative Education Program. And finally, there should be the Reviewing Program regularly into the results of the education. The education should be continuous and be repeated on regular intervals.

악교정 수술에서 모의 조종된 3차원 전산화 단층촬영상의 응용

김형돈,이경상,유선국,박창서 大韓口腔顎顔面 放射線學會 1998 Imaging Science in Dentistry Vol.28 No.2

In orthodontics and orthognathic surgery, cephalogram has been routine practice in diagnosis and treatment evaluation of craniofacial deformity. But its inherent distortion of actual length and angles during projecting three dimensional object to two dimensional plane might cause errors in quantitative analysis of shape and size. Therefore, it is desirable that three dimensional object is diagnosed and evaluated three dimensionally and three dimensional CT image is best for three dimensional analysis. Development of clinic necessitates evaluation of result of treatment and comparison before and after surgery. It is desirable that patient that was diagnosed and planned by three dimensional computed tomography before surgery is evaluated by three dimensional computed tomography after surgery, too. But Because there is no standardized normal values in three dimension now and three dimensional Computed Tomography needs expensive equipments and because of its expenses and amount of exposure to radiation, limitations still remain to be solved in its application to routine practice. If postoperative three dimensional image is constructed by pre and postoperative lateral and postero-anterior cephalograms and preoperative three dimensional computed tomogram, pre and postoperative image will be compared and evaluated three dimensionally without three dimensional computed tomography after surgery and that will contribute to standardize normal values in three dimension. This study introduced new method that computer-simulated three dimensional image was constructed by preoperative three dimensional computed tomogram and pre and postoperative lateral and postero-anterior cephalograms, and for validation of new method, in four cases of dry skull that position of mandible was displaced and four patients of orthognathic surgery, computer-simulated three dimensional image and actual postoperative three dimensional image were compared. The results were as follows. 1. In four cases of dry skull that position of mandible was displaced, range of displacement between computer-simulated three dimensional images and actual postoperative three dimensional images in co-ordinates values was from -1.8 mm to 1.8 mm and 94% in displacement of all co-ordinates values was from -1.0 mm to 1.0 mm and no significant difference between computer-simulated three dimensional images and actual postoperative three dimensional images was noticed(p>0.05). 2. In four cases of orthognathic surgery patients, range of displacement between computer-simulated three dimensional images and actual postoperative three dimensional images in coordinates values was from -6.7 mm to 7.7 mm and 90% in displacement of all co-ordinates values was from -4.0 to 4.0 mm and no significant difference between computer-simulated three dimensional images and actual postoperative three dimensional images was noticed(p>0.05). Conclusively, computer-simulated three dimensional image was constructed by preoperative three dimensional computed tomogram and pre and postoperative lateral and postero-anterior cephalograms. Therefore, potentiality that can construct postoperative three dimensional image without three dimensional computed tomography after surgery was presented.

기관에서 발생한 전이성 갑상선 유두상 암종 1례

장선호,박철규,이병돈,장혁순,강주원 순천향의학연구소 1995 Journal of Soonchunhyang Medical Science Vol.1 No.2

Papillary adenocarcionma has been common malignant tumor of human thyroid gland, and metastasize to the lung and bone as well. But endotracheal meastasis of papillary adenocarcinoma is very unusual. A 75 years old woman was presented with a metastatic papillary thyroid adeno- carcinoma in the trachea, 10 years after total thyroidectomy. The tumor mass was located in the anterior wall of tracheal lumen. The mass was confirmed with pathologic finding. We describe a case of tracheal papillary adenocarinoma of thyroid gland origin and discuss the current recommendation for management.

PC용 Slot Machine game 제작

황선식,이기돈 湖西大學校工業技術硏究所 2003 工業技術硏究所論文集 Vol.22 No.-

This paper has been successfully designed slot machine game for PC using Delphi 5.0. Slot machine inventor, Charles Fey created first slot machine in 1895. We enjoy slot machine game at casino in our spare time. But We must not be grasping to make a lot of money by slot machine game. This paper made slot machine game so that a large majority using PC in window environment enjoy free of charge.

멜라토닌이 골든 햄스터의 생식 기능에 미치는 영향

조선정,최돈찬 龍仁大學校 自然科學硏究所 1999 自然科學硏究所論文誌 Vol.4 No.1

Many mammals in temperate zone are affected by the distinctive changes of four seasons. Their reproductive status is active under summer climate and inactive under severe winter weather. The golden hamsters(Mesocricetus auratus) are seasonal breeding animals whose sexual activties are regulated by the photoperiod. Melatonin is a hormone secreted from the pineal gland, which transmits the photoperiodic information into reproductive endocrine system. The synthesis and release of melatonin reflect photoperiod. A proper administration of melatonin suppresses the sexual function. In the present study, the effects of melatonin on the gonadal activity were examined in golden hamsters received melatonin in the evening daily or once in 2, 3, 4, 5, 6, or 7 days. The results showed that testicular regression of golden hamsters was occurred in animals received melatonin injections every day and every other day in the evening. The injections of melatonin once in 3, 4, 5, 6 or 7 days had no effects on gonadal function. The present investigation suggests that the effects of photoperiod on the reproduction of male golden hamsters is mediated by the melatonin.

唐代 塞外民族에 관한 硏究 : 突厥을 中心으로

鄭起燉,金善昱 충남대학교 인문과학연구소 1974 인문학연구 Vol.1 No.1

Turks settled at Chin shan in 439 A. D. and began to contact China in 550 A.D. Rapidly Turks were able to form a sphere of influence by unifying the foreign tribes near by. Wen-Ti of Sui Dynasty succeeded in dividing Turks into two parts-eastern and westerns Turks, Though they were likely to disappear once they got a chance to develop at the end of Sui Dynasty when T'ang Dynasty was in disorder. Kao Jou, the first emperor of T'ang Dynasty, performed an appeasement policy toward Turks, and eventually T'ai Tsung could conquer them by positive policy. Bond policy was put in force to the conquered tribes by T'ang Dynasty, but whether this policy was successful or not depended upon the power of the Dynasty.

단계중합법에 의한 Core-Shell 구조의 Acrylic Composite Particle 제조에 관한 연구

이선룡,윤주섭,강돈오,설수덕 동아대학교 생산기술연구소 2001 生産技術硏究所硏究論文集 Vol.6 No.2

Core-shell composite latex has the both properties of core and shell components. This unique behavior of core-shell composite latex can be used in many industrial fields. However, in preparation of core-shell composite latex, several unexpected are observed, such as, particle coagulation, low degree of polymerization, and formation of new particles during shell polymerization. To solve the disadvantages, we study the effect of initiator concentrations, surfactant concentrations, and reaction temperature on the core-shell structure of Polymethyl methacrylate/polystyrene and polystyren/polymethyl methacrylate. Particle size and particle size distribution were measured by using Particle Size Analyzer, and the morphology of the core-shell composite latex was determined by using Transmission Electron Microscope. Glass temperature was also measured by using Differential Scanning Calorimeter. To identify the core-shell structure, pH of the two composite latex solutions were measured.

한국 재래식 된장 중 indole의 분포 및 indole 생성균

이은주,박선미,신진돈,김종규 嶺南大學校 環境問題硏究所 1991 環境硏究 Vol.11 No.1

Indole contents and microorganisms producing indole were investigated from traditional Korean soybean paste. Distributions of indole contents were 0∼140㎍/g in the soybean paste and the mean was 8.1㎍/g. Through quantitative analysis of indole and sensory evaluation indole was found to be the main cause of feacal odor in soybean paste. Microorganisms producing indole isolated in soybean paste were rods, Gram positive and spore formation, so they were Bacillus species. But the microorganisms were different from characters of known Bacillus species, so they were types of Bacillus species.

서로 다른 CNC 환경을 갖는 공작기계의 인터넷 기반 점검

김동훈,김선호,김경돈,김찬봉,고광식 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

This paper proposes Internet-based checking scheme for machine-tools with a variant CNC. Checking points defined in this research are classified into two categories such as structured point and operational point. The formal includes the vibration of bearing, temperature of spindle unit and another periodical management. And the latter includes oil checking, clamp locking/unlocking and machining on/off status. Through this research, for the global management of variant CNC machines interspersed with CAC and OAC in manufacturing system, the suitable environment for Internet-based checking of variant CNC machines was designed and the checking methods for CAC and OAC machines were compared with each other.