Bi계 산화물 초전도체 2212상에 있어서 Bi 자리에 Ge 치환에 따른 초전도 특성

신재수,이민수,최봉수,송승용,송기영 대전산업대학교 반도체기술연구소 2000 半導體技術硏究所報 Vol.2 No.-

고상반응법(solid-state reaction)으로 산화물 초전도체 Bi_2-xGe_xSr_2CaCu_2O_8+8(x=0, 0.1, 0.2, 0.3, 0.4, 0.5)을 제조하여 치환에 따른 산소량의 변화가 초전도 특성에 미치는 영향에 관하여 조사하였다. 이차 가압(intermediate press) 방법으로 제조한 시편은 온도 폭 △K(온도 임계온도 T_c^on과 영저항 임계온도 T_c^zero와의 차)가 상당히 감소함을 알았으며 80 K 단일상 고용한계는 Ge 치환량이 x<- 0.3영역임을 알았다. 고용한계 영역 내에서 Ge 치환량 x의 증가에 따라 격자상수 c가 감소함을 보였으며, 온셋 임계온도 T_c^on은 증가하였고, 과잉(여분) 샨소량은 감소함을 보였다. Samples with the nominal composition, Bi_2-xGe_xSr_2CaCu_2O_8+8(x=0, 0.1, 0.2, 0.3, 0.4, 0.5) were prepared by the solid-state reaction method. We have studied the effect of substitution Ge for Bi and investigated the superconducting properties by changing oxygen content with Ge substitution. It was found that temperature difference, △K, between T_c^on and T_c^zero was considerably smaller in the samples prepared by the intermediate pressing method than that in the samples by the solid-state reaction method. We found the solubility limit of Ge to the 80 K single phase, the onset critical temperature T_c^on increased and excess oxygen content decreased with increase of x.

판막 질환에서의 심근 섬유화 : 심근 조직을 이용한 형태학적 연구 및 혈청 생화학적 지표의 분석

강수진,박덕우,송재관,박경민,송종민,강덕현,한기훈,송현,이재원,주석중,송명근,김정선 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

저염농도의 자리발효식품의 가공에 관한 연구

송대진,김재하,강영주,김수현,고영환,하진환 濟州大學校 工科大學 産業技術硏究所 1990 産業技術硏究報告 Vol.1 No.-

This study was carried out to obtain the basic data on salted and fermented damsel fish(Jari-Jeot), one of the important traditional marine foods in Cheju-Do. and also to seek salt lowering method for the development of a new local tourist food. The results are as follows : The best organoleptic results were obtained after 60 days' fermentation for 25.0, 12.5 and 10% of salt-added group, and around 45 days for 7.5 and 5% of salt-added group. In raw fish ingredient IMP was abundant which marked 17.7 μmole/g while in fermented fish hypoxanthine was predominant but ATP and ADP were not detected after 30 days' fermentation. Sixteen kinds of free amino acids were detected and identified in Jari-Jeot instead of 17 kinds of those in raw sample. The abundant amino acids in Jari-Jeot after 60 days' fermentation were lysine. alanine, glutamic acid, glycine and leucine, and those were consisted of approximately 60% of the total free amino acids. During fermentation the content of TMAO was decreased gradually and no TMAO was detected after 75 days' fermentation while that of TMA was increased during fermentation up to 45 days' and decreased afterwards. The fatty acid of low-salt Jari-Jeot was composed of 31.9% of saturated acids, 13.2% of monoenoic acids and 54. 9% of of polyenoic acids. While the content of EPA in polyenoic acids was 1.9%, that of DHA was 23.0%. In order to lower salt concentaration of fermented damsel fish, additon of Pediococcus halophilus culture as a starter together with 10-12.596 of salt, 4-5% of KCI, and 2% of glucose gave as good quality as traditionally made Jari-Jeot.

화상처리를 이용한 디버링 가공물의 품질 측정

송무건,백재용,신관수,유송민 한국공작기계학회 2001 한국공작기계학회 춘계학술대회논문집 Vol.2001 No.-

In this study a vision system with image processing method have been introduced to find the edge radius of curvature. It was applied to inspect the edge quality of the de burring process product with brush grinding. Size of data was found to be critical in calculating the radius of curvature. Results using laser measurement system were compared.

製織工業에 있어서의 品質管理(1) : 加糊工程의 管理(1) Control of Sizing Proess(1)

宋在守 嶺南大學校 工業技術硏究所 1988 연구보고 Vol.16 No.2

In this paper, the sizing process has been evaluated in terms of quality control. Because of the fundmental differences on the characteristics of both the spun yarn and the filament yarn, the evaluation of those of sized yarn was needed. One of the most importances of quality control in the sizing process will be the process of managing size pick up. Because of changes in concentration and viscosity of paste, yarn speed and squeeze pressure, the exact and better control of these factors are essential to maintain the size pick up. To evaluate the sized yarn, the emphasis had been in the area of tensile strength, elongation, resistance to abrasion and hairiness in the previous period, but today the importanc lies rather on the size application quality, which is combination of size penetration and encapsulation, in the process of size control. For instance, hairiness and resistance to abrasion are related with the encapsulation, and at the same time the tensile strength and elongation are related with the penetration.

Ionized Calcium 및 Chitosan의 혼합처방에 따른 항균효과에 관한 연구

송명수,김미정,김영일,최동성,양재헌 又石大學校 1998 論文集 Vol.20 No.-

The antibacterial effects of chitosan depend on its molecular weight. The inhibition rate of bacteria growth of designated high in Gram positive, which was high in S aurens, S. epidermidis and Bacillus subtilis, low in S. mutans, high in C. albicans in fungi, low in A. niger. The inhibition rate of bacteria growth of chitosan was comparatively high in Gram positive, low in S. mutans and it showed high numerical value in C. albicans of fungi. The rate recorded good result at molecular weight 200,000 relatively, there was no difference, according to the molecular weight. The inhibition rate of bacteria growth according to the concentration of the increased differently between 1,000~10,000㎍/㎖, it showed antibacterial activity close to the inhibition rate of growth of chitosan rather than ionized calcium. The minimum inhibitory concentration marked the highest in the mixture of cihtosan and ionized calcium for all kind of bacteria generally, there was a little difference between yeast and fungi.

심부 매복 정중 과잉치 수술 시 마취방법 선택

민수영,송제선,이제호,최형준,손흥규,김성오 大韓小兒齒科學會 2012 大韓小兒齒科學會誌 Vol.39 No.1

Supernumerary tooth occurs most frequently at premaxilla area. Followed by mandibular premolar area, mandibular fourth molar area, maxillary paramolar area. Mesiodens are mainly impacted in the palatal area and surgical approach is made at palatal side. The time of surgery remains controversial. In case of inverted or horizontal impacted supernumerary tooth, intraosseous tooth movement and vertical growth of premaxilla makes surgical extraction more difficult. And also the more quantity of removed bone is, the higher degree of difficulty is. Inverted mesiodens of these cases were impacted superior to apex level of adjacent permanent incisor. Although CT examination revealed exact location of impacted tooth, surgical procedure including ostectomy may take a long time more than expected. So, before surgical extraction, it’s need to be considered several factors such as necessity of CT taking, degree of difficulty, direction of surgical approach, necessity of general anesthesia etc. 정중 과잉치(mesiodens)는 대개 상악 절치부에서 발견되며, 주로 구개측에 위치하는 경향이 있다. 정중 과잉치의 자연맹 출 가능성이 관찰되면, 주기적으로 검사하여 구강내로 충분히 맹출한 후에 단순발치를 시행한다. 주기적 검사에서 자연맹출 소견이 보이지 않거나, 형태이상 혹은 맹출방향의 이상으로 구강 내로 자연맹출 할 가능성이 없으면, 수술적 제거방법을 고려 해야 할 것이다. 특히, 인접한 중절치나 측절치의 맹출을 방해하고 있는 상황이 관찰된다면, 빠른 시일 내에 과잉치 제거를 위 한 수술적 방법을 시도하는 것이 타당하다. 한편, 외과적 수술의 시기를 늦추는 것을 고려해야 하는 경우도 있다. 정중과잉치가 인접하여 발육중인 정상 치아의 맹출을 방해하지 않는 경우이다. 이때, 삼차원 CT사진을 촬영하여보면, 과잉치 주변으로 영구절치의 치배가 근접하여 성곽처럼 둘러 싸고 있는 것을 볼 수 있다. 미성숙한 치배가 둘러 싸고 있는 상황에서, 무리하게 과잉치를 제거하려고 시도할 경우 인접 치배 를 손상시킬 가능성을 배제하기 어렵다. 이 점을 고려 한다면, 가급적 인접한 치아의 치근이 보다 발육한 후에 수술을 시도하 는 것이 바람직할 것이다. 초등학교 2학년 이상의 어린이들은 외래에서 국소마취하 제거하는 수술방법에 대개 잘 적응하며 고학년이 될수록 보다 수월해진다. 수술시기를 너무 늦추거나, 과잉치가 너무 늦게 발견된 경우 구개측 심부로 깊이 이동한 것을 볼 수 있다. 때로는 과잉치의 위치가 처음부터 심부에 매복되어 있을 수 있다. 이와 같은 경우, 전신마취방법을 생각해 볼 수 있을 것이다. 본 증례는 상악 정중부의 깊은 부위에 역위 매복된 과잉치를 외래에서 국소마취하에 치료를 시도할 때 관찰되는 문제점을 고찰하였고, 전신마취방법을 결정하기 위한 기준을 제시하였다. 심부 매복된 치아의 외과적 발거시 어린이의 행동조절이 가장 큰 문제였으며, 방사선 소견상 과잉치 치관의 위치가 절치의 치근단보다 상방에 위치할 경우 전신마취로 전환 하는 것이 바람직 할 것으로 사료된다.

두개강내로 전이된 Adenoid Cystic Carcinoma 2례 : 증례보고 Report of Two Cases

송재욱,윤상민,이창훈,장지수,이승훈,조경자,강신광 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.10

The authors describe two cases of unusual intracranial metastatic adenoid cystic carcinomas. A 42-year-old woman had a right pariental epidural metastatic mass. presumed hematogenous. spread from a primary tumor in the parotid gland. In second case, a 32-year-old man had a intracranial metastatic adenoid cystic carcinoma mimicking calcified psammomatous meningioma on CT scans. We present these unusual cases with a review of relevant literature and a discussion of possible pathogenesis.

Baculovirus를 이용한 Aujeszky's Disease Virus gⅢ 단백질 발현

송재영,이중복,현방훈,박종현,김병한,권창희,전무형,안수환 충남대학교 생물공학연구소 1993 생물공학연구지 Vol.3 No.-

The g Ⅲ gene located in U_L region of Yangsan strain, a field isolate of Aujeszky's disease virus (ADV) in Korea, was cloned into pTZ18R and sequenced. The gⅢ gene consisting of 1,437 nucleotides showed 98% sequence homology with that of Becker strain, a reference strain of ADV. The gene encoding gⅢ of Yangsan strain was placed under the control of Autographa californica nucleopolyhedrosis virus (AcNPV) polyhedrin promoter, and expressed by the derived recombinant baculovirus using Spodoptera frugiperda 9 (Sf9) cells. The expressed gⅢ was a protein with molecular weight of 72kd determined by immunoprecipitation and Western blotting assay using anti-ADV polyclonal antibodies and anti-gⅢ monoclonal antibody. The partially purified gⅢ protein was utilized as antigen in the radial immunodiffusion enzyme assay (RIDEA) to detect to specific antibody against ADV in pig sera. The results indicated that the sensitivity of RIDEA with the recombinant gⅢ protein antigen (98%) was as high as that with the conventional glycoprotein antigen extracted from the ADV infected cells. In addition, the false positive and false nagative reactions in gⅢ RIDEA were significantly reduced than the conventional glycoprotein RIDEA as judged from the results of standard serum neutralization test.

세기변조방사선치료의 선량분포 검증에 관한 연구

권수일,신동호,송재영,안진호 京機大學校 2006 論文集 Vol.50 No.-

Film dosimetry as a part of patient specific intensity modulated radiation therapy quality assurance (IMRT QA) has been accomplished to develop the new optimization method of film isocenter offset and to suggest the new quantitative criteria for film doimetry after optimization. Five patients with head and neck cancers were measured in IMRT dosimetry by film method. Optimization method with the local minimum was developed to adjust the film isocenter offset error, which is the biggest part of systemic errors. The mean ratios were 5.33% and 7.09% for 5mm and 1 mm resolution dose data optimization respectively.