한우 성별에 따른 등심의 육질특성 비교

최정석, 정동순, 최석현, 이상화, 김종희, 최양일 忠北大學校 農業科學硏究所 2011 農業科學硏究 Vol.27 No.4

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간암의 발생과정에서 관찰되는 난원형 세포의 전자현미경적 연구

최석렬,이중달 한양대학교 의과대학 1993 한양의대 학술지 Vol.13 No.1

Oval cells have been observed during chemical hepatocarcinogenesis in animals fed 2-acetylaminofluorene (2-AAF). Biological behavior of these cells remained poorly understood, and the hypothesis concerning about the origin and fate of these cells have been controversial. The author carried out the histologic and electron microscopic studies of oval cells in the livers from 80 Sprague-Dawley oval cells along with regenerating hepatocytes and bile ductular cells were subjected to the examination. Oval cells appeared about the periportal areas at the 10th day of the experiment on the histologic examination and at the 7th day on the electron microscopy. Individual oval cells at the earlier period and small groups of oval cells at the later period permeated into the perilobular areas making primitive ductular structures. The electron microscopic examination revealed oval cells having poorly developed organelles and plasma membrane of bile ductal cell type. The basal lamina invested partly the cytoplasm of oval cells. The ductular structure with microvilli were formed by oval cells in the later period of the experiment. The result suggested that oval cells were primitive cells to develop later into the bile ductular cells rather than hepatocytes.

상수도 배관의 부식감지시스템 개발 (Ⅱ)

최윤석,신동호,김상현,김정구 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.4

In order to develop a new corrosion sensor for detecting and monitoring the corrosion of buried pipeline, the electrochemical property of sensors and the correlation of its output to corrosion rate of steel pipe, were evaluated by electrochemical methods in synthetic groundwater, two soils of varying resistivity (5,000 ohm-cm, 10,000 ohm-cm), and synthetic tap water. In this paper, two types of electrochemical probes were used: galvanic cells containing of pipeline steel-copper and pipeline steel-stainless steel (Type 304). The results of EIS measurement indicated that the sensor current was inversely related to sensor resistance, which was governed by the corrosion behavior of cathode. In galvanic corrosion tests, the galvanic current of Cu-CS probe was higher than that of SS-CS probe. The comparison of the sensor output and corrosion rates revealed that a linear relationship was found between the probe current and the corrosion rates. A good linear quantitative relationship was found between the Cu-CS probe current and the corrosion rate of pipeline steel coupons in the soil resistivity of 5,000 ohm-cm, and synthetic tap water. In the case of the soil resistivity of 10,000 ohm-cm, although the SS-CS probe showed a better linear correlation than that of Cu-CS probe, the Cu-CS probe is more suitable than SS-CS probe, due to the high current output. (Received February 1, 2005)

한 · 일 중재법상 중재판정의 비교법적 고찰

최석범,정재우,김태환 韓國仲裁學會 2006 중재연구 Vol.16 No.1

The parties in the trade can have full autonomy and can resolve disputes independently, impartially and without delay by selecting arbitration by agreement. Korea and Japan had revised their Arbitration Laws to incorporate as many provisions of the 1985 UNCITRAL Model Law as possible. Japan had amended its century-cld arbitration law, becoming the 45th country to adopt the UNCITRAL Model Law on International commercial arbitration. New Arbitration Law was enacted as Law No.138 of 2003 and effective on March 1, 2004, is applicable to both national international arbitration. Korea had amended its arbitration law on December 31, 1999 and its New Arbitration Law incorporates the most of the 1985 UNCITRAL Model Law as Japan. Arbitration must be popular in resolving international commercial disputes in Northeast Asian bloc in order to increase the volume of intra-trade in the Northeast Asian bloc. But in order for the parties to make use of arbitration in the bloc, the arbitration laws of nations in the bloc must have similarity and unification. As Korea and Japan playes important roles in the bloc, both nations's arbitration laws must be studied in view of similarity and difference to unify both nations' arbitration laws by way of showing an example. Therefore, this paper deals with both nations' arbitration laws in view of comparative law to unify their arbitration laws and Northeast Asian Nations' arbitration laws.

SJO¨GREN'S SYNDROME 환자에게 즉시 임프란트 술식을 행한 치험례

최정환,손동석,이지연,이윤서,안선희,이재목 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.5

The old edentulous patients experience xerostomia commonly. They have considerable difficulty in wearing tissue-supported prosthesis and high risk rate of caries. One of them is Sj□gren's syndrome patient. Sj□gren's syndrome is a chronic inflammatory autoimmune disorder that results in a lymphocyte-mediated destruction of exocrine glands. We planned to place implants immediately after extraction in this case of autoimmune disease. The advantages of immediate implant placement include considerable decrease in time from tooth extraction to placement of the final prosthesis, fewer surgical procedures, and better acceptance of the overall treatment plan. We present a case of Sj□gren's syndrome patient treated with immediate implant placement & immediate loading in anterior region and immediate implant placement in posterior region.

실무개발자를 위한 BSD 소켓프로그래밍에 관한 연구

최대석,권중장,최재원 경성대학교 공학기술연구소 2002 공학기술연구지 Vol.9 No.-

네트워크 응용 프로그램을 개발하기 위해서는 Socket API를 많이 이용한다. Socket API를 이용해 정상적인 동작을 하는 것은 아주 쉽다. 그러나 실제 개발 과정에서 정상적인 상황이 아닌 여러 가지 비정상적인 오류에 처하게 됨에 따라 속수무책일 때가 많다. 따라서 본 논문에서 각 플랫폼별로 비정상적인 오류들의 사례 연구를 통하여 효율적인 응용시스템 개발에 도움을 주고자 한다.

정신분열병 고위험군에서의 뇌영상 연구

최정석,권준수 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.5

The pafhophysiology of schizophrenia may be influenced by interaction of genetic, neurodevelopmental, environmental and/or psychological factors, which make it difficult to elucidate the etiology of the disorders through clinical phenomenology. Therefore it needs to find out endophenotypes specific to schizophrenia before onset of clinical expressions. Recently, many researchers have been concerned about subjects at high risk for schizophrenia genetically or clinically using neuroimaging techniques. In this review, we summarized neuroimaging findings performed on subjects at high risk for schizophrenia. In genetic high risk subjects, fronto-temporal abnormalities were observed, while clinical high risk subjects showed frontal abnormalities, suggestive of susceptibility markers to schizophrenia.

상수도 배관의 부식감지시스템 개발 (Ⅰ)

최윤석,김정구 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.10

In order to develop a new corrosion sensor for detecting and monitoring the corrosion of buried pipeline, sensor element design and the correlation of its output to corrosion rate of steel pipe itself were evaluated by laboratory test methods in synthetic groundwater. It uses well-known principles of galvanic corrosion and consists of two dissimilar metals (anode and cathode) installed on the buried pipeline. In this paper, two types of electrochemical probes were used: galvanic cells containing pipeline steel (CS)-copper (Cu) and pipeline steel (CS)-type 304 stainless steel (SS) couples. The corrosion behavior in synthetic groundwater for the different electrodes was investigated by potentiodynamic test. The galvanic corrosion test was accomplished by a zero resistance ammeter technique. Weight loss measurements were conducted to obtain the corrosion rates of pipeline steel in synthetic groundwater. The correlation between galvanic current and corrosion rate was obtained by galvanic current measurement and corrosion rate measurements. The results of the potentiodynamic test indicated that copper exhibited an active corrosion behavior, while stainless steel demonstrated spontaneous passivation. In galvanic corrosion tests, the galvanic current of copper-steel couple was higher than that of other couple. The comparison of the sensor output and corrosion rate revealed that a linear relationship was found between the probe current and the corrosion rate. Especially, a better linear quantitative relationship was found between the Cu-CS probe current and the weight loss data of the pipeline steel coupons. In addition, the Cu-CS probe is more suitable for high resistance soil than SS-CS probe, due to the high current output.

신상아에서 후족부 모세 혈액 검사 이후에 발생한 종골 골수염

최장석,김정원 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.3

In neonate, osteomyelitis of the calcaneus is extremely rare and various reports have indicated that it accounts for 3~8% of all bone infections among neonates, infection can result from hematogenous seeding or direct inoculation, as seen in puncture wounds (accidental or for blood sampling), open fracture, degloving injuries. and extension of pressure ulceration. Although direct inoculation has been reported to be the more frequent cause, other reports suggest a hematogenous etiology in the majority. We compared our experience that neonate calcaneal osteomyelitis after hind foot capillary blood sampling for cogenital metabolic deficiencies test and follow up of bilirubin level at Paik Hospital, Inje University, Pusan, Korea to that reported in the literature to determine if the experience at this institution was similar to that previously reported. Additionally, characteristics of the clinical presentation, laboratory investigation, treatment, and outcome were studied to determine if any factors might be helpful in making an earlier diagnosis, improving outcome, or both.

로드셀을 이용한 직물의 신축성 측정에 관한 연구

최정수,김은석,주기세,왕지남 한국경영과학회 2002 한국경영과학회 학술대회논문집 Vol.- No.1(1)

So far, the common elasticity data of textile fabrics has not been present because the method depends on the knowledge of measurement operators. In this paper, the new measurement equipment using road cell is presented to measure the coefficient of textile fabrics in real time. The measurement method is based on the volt: among textile fabrics. The textiles with strong elasticity are high voltage produced from others are low. The presented method can be applied to visualize the textile, sew the cloth, contrc textile fabrics. Also, these measurement datum are used to B2B electronic trading system.