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      • KCI등재후보

        비만 개선 효과를 지닌 탄수화물 및 지방 흡수 억제 기능성 식이조성물 개발

        윤유식,최선미,홍순복,홍정미,김정원,이홍석,홍성길 한국조리과학회 2002 한국식품조리과학회지 Vol.18 No.3

        In a previous study, we developed a new food additive as an egg yolk antibody (IgY) against carbohydrate digestion enzymes for the regulation of blood glucose level and weight control. The IgY delayed and decreased the increment of blood glucose level after administration of sucrose in human being by 30% in 20∼30 min. We also developed a lipase inhibitor as a water extract of two kinds of herb, Platycodon grandiflorum and Solanum melongena. Twenty three volunteers were subjected to the intake of the egg yolk IgY plus the herbal extracts for 50 days. In average, the treated subjects appeared to lose 1.96 ㎏ of body weight and 3.4 ㎏ of body fat mass during the treated period. Furthermore, Panniculus adiposus and breech size were significantly decreased during the experimental period. Above results suggested that the administration of the dietary additives composed of egg yolk IgY and natural herbal extract improve the obesity by the decrement of body weight and body fat mass.

      • 진공용 나노스테이지 개발

        홍원표,강은구,이석우,최헌종 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

        Miniaturization is the central theme in modem fabrication technology. Many of the components used in modern products are becoming smaller and smaller. The direct write FIB technology has several advantages over contemporary micromachining technology, including better feature resolution with low lateral scattering and capability of maskless fabrication. Therefore, the application of focused ion beam(FIB) technology in micro fabricaton has beome increasingly popular. In recent model of FIB, however the feeding system has been a very coarse resolution of about a few μm. It is not unsuitable to the sputtering and the deposition to make the high-precision structure in micro or macro scale. Our research is the development of nano stage of 200mm strokes and 10nm resolutions. Also, this stage should be effectively operating in ultra high vacuum of about 1×10^(-5)pa. This paper presents the concept of nano stages and the discussion of the material treatment for ultra high vacuum.

      • KCI등재
      • 고속 HMC 이송계의 운동특성 평가 및 운동오차 예측

        최헌종,허남환,강은구,이석우,홍원표 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

        Recently, the evolution in production techniques (e.g. high-speed milling) and the complex shapes involved in modern production design has been increasingly popular. The key to the achievement is a drastic improvement of the dynamic behavior of the machine tool axes used in production machinery. The more complex these tool paths the higher the speed and acceleration requirements. But it is very difficult to reach the target for high speed machine tool because of the limitations of servo system and motion control system. However the direct drive design of machine tool axes, which is based on linear motors and which recently appeared on the market, is a viable candidate to meet the ever increasing demands, because of these advantages such as no backlash, less friction, more mechanical simplicity and very higher acceleration and velocity comparing to the traditional system. This paper focused on the performance tests of the high speed horizontal machine tool based on linear motor. Especially, dynamic characteristics were investigated through circular test and circular form machining test is carried out considering many important parameter. Therefore these several experiments is used to be evaluated the model for prediction of circular motion error and circular machined error.

      • KCI등재
      • KCI등재
      • 프레스 금형의 특징형상 인식에 의한 가공데이타 자동변환

        최홍태,반갑수,이석희 한국경영과학회 1994 한국경영과학회 학술대회논문집 Vol.- No.1

        This paper presents an automatic conversion of machining data from the orthographic views of press mold by feature recognition rule. The system includes following 6 modules : separation of views, function support, dimension text check and feature processing modules. The characteristic of this system is that with minimum user intervention, it recognizes basic features such as holes, slots, pockets and clamping parts and thus automatically converts CAD drawing details of press mold into machining data using 2D CAD system instead of using an expensive 3D Modeler. The system is developed by using IBM-PC in the environment of AutoCAD R12, AutoLISP and MetaWare High C. Performance of the system is verified as a good interfacing of CAD and CAM when applied to a lot of sample drawing.

      • 우리나라 관세자유지역의 효율적인 운영방안

        최홍석 釜慶大學校 2002 釜慶大學校 論文集 Vol.7 No.-

        This paper aims to suggest the ideal models of establishing and managing Customs Free Zone(CFZ) through advanced cases and experiences of several leading countries. The study selected Germany, Hongkong, Singapore, USA, and UK as the case countries, which have some different schemes in systematizing CFZ according to economic structures, customs systems, balance of trade payment, geopolitical location and so on. Korea is planning to introduce CFZ at Pusan port in 2001 and offer attractive investment environments to foreigners with geographical and strategic advantages in the Eastern Asia. However, CF2s success or failure does not depend on declarations and catch phrases but reliable plans to provide more attractive incentives than foreign countries?by benchmarking their effective CFZ management and techniques. It is concluded that our government presents diverse inducements that provide the investors with incentives such as the alleviations of strict investment restrictions and tax burdens, the guarantee of free business activities and the total exemptions from tariffs and value added tax against the carried goods in th area. In addition to this, the nation will have to cooperate with local governments consistently and amicably.

      • SCOPUSSCIEKCI등재

        뇌동맥류 파열 환자에서 증후성 뇌혈관연축의 발생 및 회복에 영향을 미치는 인자들

        최석민,석종식,권정택,민병국,황성남,김영백,홍현종 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.10

        To determine the factors affecting development and recovery of symptomatic vasospasm. the author analysed the results of patients with ruptured intracranial aneurysms treated by nimodipine and prophylactic “triple0H” therapy. From January 1991 to December 1995. 199 patients underwent surgery for ruptured intracerebral aneurysms. Combined hypervolemic hemodilution was initiated at the time of admission. Induced hypertension was added immediately after surgery(aneurysmal neck clipping). All patients received nimodipine intravenously or orally until the 14th day of SAH Sixty patients underwent surgery on Day 0 through 2 after attacks of subarachnoid hemorrhage(Goup A) 105 patients on Day 3 through 14(Group B). and 35 patients after Day 14(Group C). Of 199 patients. 76(38%) patients suffered from symtomatic vasospasm. Symptomatic vasospasm occured in 34% of Group A patients. 33% of Group B patients. and 5% of Group C patients. Symtomatic vasospasm occured more frequently in the older age group. the Fisher group 3 and Hunt & Hess grades 3, 4 and 5 groups. Of 76 patients who suffered from symptomatic vasospasm. 47(62%) patients recovered completely. The author analysed the relationship between recovery rate and sex, age. Hunt & Hess agrde and Fisher group among these 76 patients. Recovery rates between these groups were not significantly different. Based on this experience the author believes that Hunt-Hess grade. Fisher group and age are important factors affecting symptomatic vasospasm development.

      • 비·부비동에 발생한 모균증 : 3례보고

        최영석,진흥률,연제엽 충북대학교 의과대학 충북대학교 의학연구소 2005 忠北醫大學術誌 Vol.15 No.1

        Sinonasal mucormycosis is a form of invasive fungal infection of the sinonasal track that often extends to the orbit, brain, and palate. It is caused by the order Mucorales and commonly associated with immuconcompromised conditions such as diabetic ketoacidosis, HIV infection, hematologic malignancy. Treatment includes aggressive debridement, systemic antifungal therapy and control of underlying factors. We experienced 3 cases of sinonasal mucormycosis: rhino-orbital, isolated sphenoid sinus, palatal mucormycosis. Each patients had undergone wide surgical debridement including a case with orbital exenteration and systemic antifungal therapy. We present our successful management with literature reviews. 비·부비동에 발생하는 모균증은 안와, 두 개내, 또는 구개 침범이 흔한 진균성 감염이고 mucorales종의 일종으로 당뇨병케토산증이나 AIDS환자, 혈액 악성종양과 같이 면역이 저하된 환자에게서 주로 발생한다. 치료로는 환자의 원인 요소를 치료하고 광범위한 수술적 절제와 장기간의 항진균제의 사용이 이용되고 있지만 치료효과가 만족하지 못하다. 저자들은 안구를 침범하여 안구를 제거한 경우, 장기간의 두통을 호소한 환자에게서 발견된 접형동 단독의 감염 사례, 그리고 구개를 침범하여 구개의 일부를 절제한 사례를 경험하였고 광범위한 감염부위의 절제와 장기간의 항진균제 치료를 이용하여 완치하였기에 문헌 고찰과 함께 보고하고자 한다.

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