유전체 배리어 방전 플라즈마를 이용한 애시드레드 27 수용액의 색도 제거

조진오,김병남,목영선 제주대학교 공과대학 첨단기술연구소 2006 尖端技術硏究所論文集 Vol.17 No.2

The physicochemical processes of dielectric barrier discharge (DBD) such as in-situ formation of chemically active species and emission of UV light were utilized for the decolorization of an aqueous solution formed with distilled water and an azo dye Acid Red 27. The DBD reactor consisted of two coaxial dielectric tubes with different diameters. Aqueous electrolyte solution was filled in the inner tube, which acted as the discharging electrode. The DBD reactor was submerged in the Acid Red 27 solution that was grounded. In this case, the Acid Red 27 solution acted not only as the counter electrode but also as the cooling medium of the DBD reactor. The DBD reactor with the aqueous discharging electrode was found to be more energy-efficient for the generation of ozone than that with typical metal electrode. The chemically active species (mostly ozone) produced in the DBD reactor were well dispersed in the Acid Red 27 solution using a porous gas diffuser, thereby increasing the gas-liquid contact area available for the decolorization. The results have clearly shown that the DBD reactor system was very effective for decolorizing the Acid Red 27 solution. For the purpose of improving the performance of the DBD reactor system, MnO_(2) catalyst was added to the Acid Red 27 solution. It was found that the catalyst significantly enhanced the decolorization.

AKD의 사이즈 효과 발현기구

조병묵,이돈섭 江源大學校 森林科學硏究所 1996 Journal of Forest Science Vol.12 No.-

요약일반적으로 AKD는 중성 초지에서 셀룰로오스와의 화학적 결합에 의해 그 효과가 발현 되는 것으로 알려져 있다. 그러나 이 이론에 대한 반대 견해도 많이 발표되었다.이 연구는 AKD와 셀룰로오스간의 화학적 결합 유무를 확인하기 위해 수행되었다. 특히 종이내에서 셀룰로오스 섬유와 화학 결합을 하고 있는 반응 AKD와 미반응 AKD가 각각 사이즈도에 미치는 영향을 조사하였으므로 화학적 결합이 존재한다면 AKD 사이즈 처 리된 종이내에서 고온하 수증기상 전이를 일으킬 수 있는 성분을 조사하였다. 그 밖에 이 연구에서는 초지시 여러 제반 요인들에 의한 AKD의 반응성을 알아 보 았다.ABSTRACTGenerally, it has been know that AKD develops sizing efficiency by forming the chemical bond with cellulose in neutral paper making. However, there have been many expriments in opposition to this theory.This study was carried out to find whether there is chemical bond between AKD and cellulose or not. Also, it was investigated that how much the reacted AKD forming chemical bond and the unreacted AKD contribute to sizing degree respectively if chemical bond presents, and what caused AKD sized paper to migrate under high temperature.Besides, this work experimented several factors having influences on AKD sizing in paper amking.

회계감사에 있어서 위험지향적 감사에 관한 연구

曺秉權 龍仁大學校 1994 용인대학교 논문집 Vol.10 No.-

This study is a risk analysis methodology that effectively operationalizes the the concepts in SAS NO.47. The approach focuses on the combined impact of a company's operating environment, financial and operating results and system of internal controls on each important account or group of transactions in the financial statement. The integtration of these factors in a formalized risk analysis is the key element in the approach. Operating components-rather than transaction cycles-provide the framework. And heavy emphasis is placed on using analytical review procedures in the various phases of the audit.

會計監査에 있어서 分析的 檢討에 관한 硏究

曺秉權 龍仁大學校 1995 용인대학교 논문집 Vol.11 No.-

The auditor's analytical review has recently been the focus of numerous articles and discussions, yeti little knowledge is available on the practice of analytical reviews. Analytical reviews first recived explicit recognition within the auditing standards in 1972 {SAP No.54(AICPA, 1972)}, Presently analytical review are considered substantive tests that can significantly affect the nature, timing, and extent of other procedures{SAS No.23}. In accrdance with this recognition, there exists an increasing awareness of the potential for analytical review to improve audit efficiency and effectiveness.

여드름 환자에서 adapalene 겔과 tretinoin 크림의 split-face 비교 연구

김영조,선정우,정병수,최규철 조선대학교 부설 의학연구소 2000 The Medical Journal of Chosun University Vol.25 No.1

Background : Adapalene is a new synthetic naphtholic acid derivative with potent retinoid and antiinflammatory properties, developed for the topical treatment of acne vulgaris. Objective : This study was designed to compare the efficacy and safety of 0.1% adapalene gel with tretinoin cream(0.025% and 0.05%) in the treatment of grade I to V facial acne vulgaris. Methods : Forty acne patient volunteers were enrolled in this investigatormasked, left-right comparison, randomized, controlled, intraindividual study. 0.1% adapalene gel and tretinoin cream(0.025% or 0.05%) were applied once a day to one halfface by the volunteers for 30 consecutive days. Efficacy and cutaneous tolerance were accessed at baseline and week 1, 2, 3, and 4. Efficacy was determined by investigator counts of inflammatory papules and pustules, and non-inflammatory open and closed comedones, as well as global improvement. Clinical signs(erythema, desquamation, dryness) and subjective symptoms(pruritus, burning) were evaluated and scored weekly. Result : 0.1% Adapalene gel was more effective in treating acne lesions than tretinoin cream(p<0.05). Cutaneous side effect was limited to a mild retinoid dermatitis occurring in all treatment groups. However, patients treated with adapalene gel tolerated this therapy significantly better than those treated with tretinoin cream. Conclusion : 0.1% adapalene gel applied once daily was significantly more effective in reducing acne lesions and was better tolerated than tretinoin cream in the treatment of acne vulgaris.

最近環境問題 硏究動向

李英祚,羅炳旭 慶北大學校 東洋文化硏究所 1982 東洋文化硏究 Vol.9 No.-

1. Environmental detorioration has demonstrable harful effects on Human health, Fauna, Flora, Natural resources, Materials, Climate and Weather. We were conviced that virtually all forms of environmental damage were increasing in absence of powerful contermeasures and then environmental quality detorioration would continue to accelerate more or less. 2. Environmental policy is distinguished by several important characteristics in comparison with other public policy. 1) Most of Environmental policy includes coercive powers. 2) It stresses two aspeets of inputs into the policy process: technical and political inputs. 3) The role of scientific information and its exchange will pay a greater part in the formulation of environmental policy. 3. Present studies in the environmental problems focus on following. 1) Researches in the past neglected the relation between the socioeconomic system and its natural environment with the simplistic view of the course of environmental contamination, and most of the researches had been technically oriented. But these efforts, which are of course necessary, cannot be successful in approaching the aim that diminish the environmental pollution. The underlying problem can by no means be solved by an integration of applicable scientific methods. These problems can be solved by interdisciplinary research and communication between the groups. 2) In the present study the focus is on the receptor and how damage to it can be related to environmental changes, and ultimately to the source of these changes. Accordingly, damage is classified here into six broad receptor catagories. Within each catagory, two general types of damage are considered, financial losses and losses of amenity. To date, studies have used other terms to denote this dichotomy as "direct and indirect costs", "economic and social costs", "tangible and intangible costs" and "physical and psychic costs". 3) The policy instruments that can be used for the preservation of environmental quality were classified into four broad categories: moral suasion, direct controls, price incentives and direct governmental expenditure. The three, moral suasion, direct controls, and price incentives, are techniques to influence polluters' behavior. The forth approach involves direct governmental expenditure, largely for the construction and operation of projects that improve the environment. These all instruments must be satisfied with criteria such as dependability, permanance, adptability to economic growth, equity, economy, incentives for maximum effort, and political attractiveness for evaluating environmental policy. But each instrument has its strength and its limitations in achieving particular environmental objectives.

소아 Henoch-Schonlein 신염의 임상경과와 조직학적 특성 : Renal Outcome and Prognostic Factors

김병목,장창환,조민현,곽정식,고철우,구자훈 대한신장학회 2003 대한신장학회잡지 Vol.22 No.6

위선암에서 p53 단백의 과발현과 임상 및 병리학적 예후인자와의 상관관계

서병조,유항종,이주호,주미,이혜경,김진복 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.2

Objective: Mutations in the p53 gene, one of the most common genetic alterations in human cancer, are implicated in tumorigenesis and tumor progression. Wild-type p53 negatively regulates the cell cycle; a loss of function by mutation might be expected to result in enhanced proliferating activity and tumor progression. A large number of immunohistochemical studies have confirmed p53 accumulation to be a very common feature of human malignancy. The aim of the present study was to determine whether p53 status in gastric cancer is correlated statistically with various histopathological indicators or not. Methods and Materials: A total of 197 surgically resected gastric adenocarcinomas were examined to determine whether a correlation exited between immunohistochemical expressions of the p53 protein and other histopathological factors. Results: p53 overexpression was observed in 46.2% of the gastric cancers. Overexpression of p53 was correlated with vascular invasion of gastric cancer(p=0.004). In early gastric cancer, the p53 overexpression rate was 42.3%, and of them, a correlation was found between the intestinal type of the Lauren classifcation(p=0.013) and histologically differentiated gastric cancer(p=0.014). Conclusion: p53 overexpression was significantly correlated with vascular invasion of gastric cancer. In cases of early gastric cancer, p53 overexpression was correlated with Lauren classification and differentiation. These results suggest that p53 mutation plays an important role in carcinogenesis in gastric adenocarcinomas. Further study in needed to determine the correlation between p53 overexpression and the prognosis for the gastric cancer patient.

인터넷 의료상담에 관한 분석 및 연구

김영조,박홍표,정병수,최규철 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.1

Background and Objectives: Telemedicine uses computer and telecommunication technologies to provide medical information and services. Telemedicine can be useful in any situation in which there is a physical barrier between the doctor and the patient. We analyzed medical consultations from Chosun University Hospital is home page (http://hosp.chosun.ac.kr) to find problems on the home page and to offer high quality medical information services. Methods : We collected 544 queries of medical consultation on our home page from May 1998 to May 1999. From medical consultation data on the internet web site of Chosun University Hospital, consulted documents were analyzed with regard to medical department, patients’ age, consultation by attorney, and dermatologic consultations. Results : The telemedicine system is a relatively satisfactory method to both patients and physicians due to easier access and almost rea1-time medical consultation through the world wide web. But several problems should be solved to provide a more effective and lawful telemedicine environment. Conclusion : As a consequence to analyzed medical consultations on our home page, there were several problems in our store-and-forwarding system. To establish an effective telemedicine system, we have to prepare protocols to receive sufficient information and patients have to send digital images to make help an accurate diagnosis. Also problems of liability, reimbursement and coordinated national policy need to be solved.

7세기 동아시아 국제대전과 백제멸망관 재고찰

이병렬,조기호 국립7개대학공동논문집간행위원회 2003 人文學論叢 Vol.3 No.-

By the Great International War of East Asia in 7th century, the Pung government of Baekje-Korea oppose with the assistance of Oae-Japan the aggression of Tang-China and Silla-Korea. But the Baekje-Korea fall in Sep. 8. 663.