상기도 감염의 세균학적 연구

김숙자,정용헌 충남대학교 의과대학 지역사회의학연구소 1986 충남의대잡지 Vol.13 No.1

For bacteriological studies on upper respiratory infection in pediatric age, samples by nasopharyngeal swabs in 60 cases of rhinitis group, oropharyngeal swabs in 59 cases of pharyngitis-ton-sillitis group and 46 cases of laryngitis group and naso-and oropharyngeal swabs in 59 cases of control group were collected at the outpatient departmrnt of pediatrics, Chung-Buk Medical Center and Chung-Nam National University Hospital from January, 1982 to October, 1982. Bacteriological studies according to each clinical group and age were made. Antibiotics sensitivity test and clinical manifestation according to potential pathogenic bacteria were evaluated. The results are summarized as follows: 1. Incidence of significant potential bacterial pathogen was 32% in URI patients and 17% in the control group. 2. The order of potential bacteria isolated from rhinitis patients was Staphylococcus aureus, Pneumococcus. H. influenza, and H. aphrophilus. Staphylococcus aureus were cultured more in the younger age group. H. influenza were cultured highly in ages of 2-5years, and Pneumococcus were cultured from children over 2 years of age. 3. The order of potential bacteria isolated from phayngitis tonsillitis group was beat-hemolytic Streptococcus and Pneumococcus. Beta-hemolytic Streptococcus were cultured highly over 2years of age, but Pneumococcus had no difference according to age. 4. Main potential bacteria isolated from laryngitis was H. influenza which was cultured highly in the 2-5year old group. 5. Symptoms of rhinitis and pharyngotonsillitis in Staphylococcus and Pneumococcus, of pharyngitis-tonillitis accmopanied with high fever in beta-hemolytic Steptococcus and of laryngitis and rhinitis H. influenza were noted. 6. Antibiotics sensitivity by the disc method showed as follows : Novobiocin, CM, Neomycin & Cephalosporin in Staphylococcus aureus : CM in Staphylococcus epidemidis : Penicillin, EM, Novobiocin, CM and Lincomycin in beta-hemolytic Streptococcus; CM in Strepteptococcus viridans : Penicillin, Ampicillin, Doxicycline in Pneumococcus and Penicillin, Novobiocin and CM in Neisseria were highly sensitive antibiotics.

太陽熱 發電에 關한 硏究 : 選擇吸收器의 效率改善方案을 中心으로

鄭憲相 조선대학교 생산기술연구소 1983 生産技術硏究 Vol.1983 No.-

The most important component in achieving high efficiency of a fixed, evacuated solar collector is the selective absorber. High quality optical properties (high absorptance and low emittance) and high temperature duability of the selective absorber are more important for the efficient and lasting operation of a fixed, evacuated, concentrating collector designed for operation at higher temperatures than for any other type of collector. In this paper, the improvement method of formation of the selective absorbers has been described. In order to obtain a low cost selective absorber for collector, silvering a number of glass samples by the Brashear process, subsequently electroplating and baking them in different conditions. This selective surface of the samples consists of a number of thin layers on a supporting substrates, including a carbonaceous absorbing layer, a catalyst layer, and a metallic infrared reflecting layer. The catalyst layer serves to catalyze the pyrolysis of a carbon containing gaseous compound to form the carbonaceous layer. The solar absorptance at AM2 and thermal emittance at 100℃ of the ideal selective absorber are known as 0.94 and 0.05 respectively. The best qualified samples in the experiments are 109B, 142L and 135L. The solar absorptance at AM2 and thermal emittance at 100℃ of these samples are calculated as follows: 109B : 0.94, 0.067, 142L : 0.94, 0.0683, 15L : 0.94, 0.070

국제회계에 관한 일반적 고찰

정헌덕 진주여자전문대학 1997 論文集 Vol.20 No.-

According to the increase of international capital flow, new problems which can not be found at domestic financial reprots with the expansion of report functions will be produced, in case of a certain country's accounting information for enterprise s activities to be pronounced to various countries. To solve the problems concerned with information markers and users, through the improvement of this situation, the international unification campaign for accounting criteria rapidly have been spreaded out after the year 1960, Thus, with the help of 6 countries including United Kingdom, United States and Candada, arrangement committee of International Accounting Standand Committee(IASC) was held at the year 1973 and the criteria of it was pronounced and started at 1975. The formation of international accounting standard had been progressed to the direction of integrating various accounting standards and laws through the mutual adjustment and enough consideration with each countries' accounting criteria, laws and piractical practices. However, the problems with IASC confornted are: firstly. the problem concedned with approval and obervance to the international accounting standards, secondly. the tasks to be solved with each country are respectively different, finally, world-wide nationalism in enterprises is rapidly expanded. Therefore to be made better use of the above standards as international accounting standard, full cooperation and efforts between each counteries should be requested at these days.

알레르기성 진균성 부비동염 1예

동헌종,윤성원,정승규 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.7

衛星通信에 관한 硏究 : Filter의 性能改善을 中心으로 Especially on the Improvement of Filter Performance

鄭憲相,宋鐵,劉炳守,朴暢均,白亨來,鄭鍾熙,李炅燮 조선대학교 동력자원연구소 1986 動力資源硏究所誌 Vol.8 No.2

There are two kinds of data transmission communication method, namely, Analog communication method and Digital communication method. The latter has many excellent characteristics as compared with the former. In order to design excellent Digital Filter, the window function is studied in this paper. The conventional time-domain windowing requires N/2 stored values of the data window and N multiplications. A class of windows, called binary windows, for the frequency-domain implementation of the Discrete Fourier Transform is proposed. They do not require multiplications or stored constants ; rather, they are replaced by shift and add operations. These windows offer excellent sidelobe behavior compared with the conventional windows.

상부요로폐색환자에서 신주사상 분리신기능과 크리아티닌청소치 비율의 비교

정헌영,서기석,김종성 大韓泌尿器科學會 1998 Korean Journal of Urology Vol.39 No.2

소아기 외과계질환의 통계적 관찰

정용헌,이재호,이건수,서종진 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2

Child is not little man but rather a father of man. Children are faced to surgical and medical problems reqiring various specialists. Authors analized 1126 pediatric surgical in-patients of Chung-nam National Univ. Hospital from Jan. to Dec. 1988 by departments, age, sex, duration of admission and types of diseases in order to get the information for management of children’s hospital. The results are as follows: 1. Absolute numbers of in-patients by departments are above 200 in general surgery and opthalmology, between 100-199 in plastic surgery, ENT, chest surgery and below 99 in urology and neurosurgery. 2. Male to female ratio as a whole is 1.8:1, male dominant. 3. Duration of admission within 1 week was of 55% as a whole, 87% in ENT, 85% in ophthalmology, 13% in orthopedic surgery. 4. Average duration of admission was 10.8 days as a whole, 4.6 days in ENT, 5.1 in ophthalmology, 29.7 days in orthopedic surgery, and variable by types of diseases. 5. The most frequent disease by departments was hernia in general surgery, fracture in orthopedic surgery, cerebral contusion in neurosurgery, ventricular septal defect in chest surgery, strabismus in ophthalmology, tonsillitis & adenoiditis in ENT.

經濟的 代理人으로서의 會計監査人에 대한 考察

鄭憲錫 誠信女子大學校 1986 硏究論文集 Vol.24 No.-

The owner of the firm hires an auditor as a second agent who is expected to attest to the assertions made by the manager of the firm, therby inducing the manager to report trvthfully to the owner. Thus, there arises an agency problem between the owner and the auditor similar to the one between the owner and the manager: how to motivate the rational auditor to deliver the contracted level of audit services where their services are not observable by the owner. Moral hazard problems can be arrisen on the auditor`s effort. Therefore, the pareto optimal contract between the principal and agent is then used to determine the form of the liability rule. Amajor factor influencing the incentives of the auditor in carrying out contracted tasks is the manner in which the legalsystem, a) decides if audit failure has occured and b) implements penalties. An auditor uses due care standard to avoid legal liability and chooses the optimal amount of care to maximize his expected utility. Areas of liability in auditing has been analyzed in terms of strict liability and negligence. While a strict liability system is one where the auditor is held liable for all losses without regard for his effort, a negligence system is one where the auditor is held liable if the court determines (on verification) that his effort level is lower than the due care standard. This paper attempted to present a simple model that can address the auditor`s liability problems under the two systems. But this model has some limitations because of tailing to consider the factors such as legal costs, independence, auditor`s reputation and insurance. Through a further study a more fine model inducing pareto optimal contract for the social welfare system should be developed.

3-Methylcholanthrene에 依하여 誘導된 腫瘍마우스의 緬羊赤血球에 對한 免疫反應

鄭憲鐸,河大有 大韓免疫學會 1979 大韓免疫學會誌 Vol.1 No.1

This study was undertaken to evaluate the immunological capacity of the mice bearing tumor induced by 3-methylcholanthrene (3-MCA). The age matched normal mice were used as control. Mouse skin tumor was elicited by topical application of 0.2m1 of a 0.4% aceton solution of 3-MCA on the shaved dorsal skin and concomitant intramuscular inoculation of 10g prostaglandin Fa. (PG F:a) three times a week for two months. The cell-mediated immune response was determined by measuring the footpad swelling reaction and the humoral immune response was determined by easuring the antibody formation to sheep red blood cells (SRBC). In addition, 4 hour's skin reaction to SRBC and rosette formation of spleen cells with SRBC were measured. All of the immunological parameters used in this study were lower in the tumor-bearing mice than in the normal mice. Among the parameters, the footpad swelling reaction was most severely depressed in the tumor-bearing mice. The titers of hemagglutinin and hemolysin were slightly lowered and both titers of mercaptoethanol-resistant (IgG) antibody and mercaptoethanol-sensitive (IgM) antibody were decreased in the tumor-bearing mice. The spleen weights were strikingly increased in the tumor-bearing mice. However, the numbers of rosette forming spleen cells were slightly decreased in the tumor-bearing mice. The four hour's skin reactions were also depressed in the tumor-bearing mice. This study clearly indicates that malignant tnmor suppresses the immunological responses of host, paricularly cell-mediated immune response.

VDT 증후군 예방을 위한 체조프로그램 개발

정훈교 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

The purpose of this study was gymnastics program development for prevention of the VDT syndrome that a social problem was becoming while VDT spread rapidly became a generalization recently. Gymnastics program of the VDT syndrome developed in this study s gymnastics action to be easily practicable at any time with a chair in a workplace regardless of men and women and fell off. Preventive gymnastics program of VDT syndrome helps a fatigue recovery of weakened physical my function, keeps physical, mental health and gives an efficiency of work. An action of VDT program is made to turn shaking, and striking, thing eye rotary motion to breathe. Consequently, it it s practiced preventive gymnastics program of the VDT syndrome that developed in this study every day in a workplace, a lire can lead to be happy with a base for physical mental health.