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메치실린 내성 포도상구균에 대한 SK-302의 시험관내 및 생체내 효과
박윤선,김수기,신운섭,최선주,정종순,이종수 關東大學校醫科大學醫科學硏究所 1998 關東醫大學術誌 Vol.2 No.1
SK-302 is the active compound purified from culture filtrate of a streptomyces species (streptomyces sp. 302). The in vitro and in vivo antibacterial activities of SK-302 were evaluated against 6 clinically isolated MRSA strains and compared with the activities of vancomycin. SK-302 had node in virto antistaphylocoal activity stronger than that of vancomycin exhibiting MIC's, while vancomycin showed very weak 4 to 8fold lower than that of vancomycin. In SK-302 showed killing activity at the MIC, so SK-302 was superior to vancomycin. Furthermore, in acute systemic infections in mice, the ED_50s of SK-302 against infections by high-resistance MRSA were 30 to 40-feold less than that of vancomycin, therefore SK-302 showed potent in vive therapeutic efficacy against MRSA infection, These results suggest that SK-302 has excellent in virto in and in vivo activities against high-resistance MRSA.
有限要素法을 이용한 LNG선박용 배관의 응력해성에 관한 硏究
박선준,이병섭,홍성인 충남대학교 산업기술연구소 2001 산업기술연구논문집 Vol.16 No.1
The purpose of this study is to investigate the stress on the piping for LNG ships by using the Finite Element Method. By this method, we can estimate the working displacement, force and stress at each nodal point of equipped LNG piping. The results of the numerical analysis of piping for LNG ships are calculated. Through the analysis results and the comparison, the following conclusions are obtained ; (1)The weights of LNG and piping should be considered for calculating the stress on the piping of LNG Ships. (2)Sun effect should be considered for calculating the stress on the piping of LNG Ships. (3)The equipped LNG piping satisfy the relevant requirements of the IGC Code since the maximum stress, 17.3kg/mm2 at the elements of No.3 and No.12 for LNG piping sampled, is less than the allowable stress, 27.5kg/mm2 (4)To get more detailed stress value for the future, an additional study is necessary for dynamic load(for example, acceleration etc.,).
한의진단명과 진단요건의 표준화 연구 II (표준화 실례) : 2차년도 연구결과 중간 보고
양기상,최선미,최승훈,안규석,박경모,박종현,김성우,신승호,정우열,전병훈,고현,김정범,신상우,김성훈,김동희,권영규,엄현섭,장혜옥 한국한의학연구원 1996 한국한의학연구원논문집 Vol.2 No.1
The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the second year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows; - differential diagnosis according to condition of body fluid, differentiation of syndromes according to the state of qi and blood, differential diagnosis according to relative excessiveness or deficiency of yin and yang(氣血陰陽津液辨證) - differentiation of diseases according to pathological changes of the viscera and their interrelation - analyzing and differentiating of febrile diseases in accordance with the theory of the six channels(傷寒辨證) The individual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name(異名), notion of diagnosis pattern, index of differentiation of symptoms and signs(辨證指標), the main point of diagnosis, analysis of diagnosis pattern(證候分析), discrimination of diagnosis pattern(證候鑑別), a way of curing a diseases(治法), prescription(處方), herb in common use(常用藥物), diseases appearing the diagnosis pattern(常見疾病), documents(文獻調査). This study was carried out on the basis of the Chinese documents and references.
( Sun Seob Park ),( Joong-won Park ),( Bo Hyun Kim ),( Sunhoo Yoo ),( Byung-ho Nam ),( Chang-min Kim ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Aims: The outcomes of endoscopic variceal ligation (EVL) treatment of esophageal varices in patients with hepatocellular carcinoma (HCC) and portal vein tumor thrombus (PVTT) are unclear. We evaluated the short term (7-, 15-, 30-day) outcomes of emergency and prophylactic esophageal variceal band ligation (EVL) in HCC patients with PVTT. Methods: From 2010 to 2012, 424 sessions of EVL were conducted in 242 HCC patients with esophageal varices. Clinical findings and outcomes were reviewed retrospectively. We assessed the bleeding- free and overall survival, and related prognostic factors were analyzed using the Kaplan-Meier method and a Cox proportional hazard model. Results: All EVL sessions were conducted in patients with liver function Child-Pugh class A (159 sessions, 37.5%), class B (220 sessions, 51.9%), class C (45 sessions, 10.6%), and in modified UICC stage I/II (138 sessions, 32.5%), stage III/IV (93 sessions, 21.9%). Ninety-three (21.9%) sessions were conducted in the state of complete remission of HCC. Total 172 sessions of EVL were conducted in patients with PVTT; 115 (66.9%) sessions in patients with PVTT at the main portal trunk (Vp4) or first-order branch of the portal vein (Vp3). Major PVTT (Vp4 or Vp3) was predictive of esophageal variceal bleeding (hazard ratio 8.14, p<.0001). The 7-, 15-, 30-day bleeding-free survival rates of patients with major PVTT were 91.2%, 75.0%, 56.9% and they are significantly lower than that of patients without PVTT (98.0%, 95.6%, 92.0%, p<.0001, respectively). Conclusions: After successful hemostasis with EVL, the bleeding-free survival rate was significantly lower in patients with major PVTT in comparison to patients without major PVTT. Non-invasive treatment may be first considered for esophageal varix in advanced HCC patients with main PVTT.
Cutaneous Cryptococcus laurentii Infection in an Allografted Patient with Refractory Leukemia
( Sun Seob Park ),( Hye Won Lee ),( Young Ju Choi ),( Weon Seo Park ),( Sun Young Kong ),( Sang Il Choi ),( Mi Hong Choi ),( Si Won Lee ),( Eun Jeong Ko ),( Hyeon Seok Eom ) 대한내과학회 2013 대한내과학회 추계학술발표논문집 Vol.2013 No.1
Cryptococcus spp. other than Cryptococcus neoformans is generally nonpathogenic to humans. However, opportunistic infections associated with non-neoformans species including Cryptococcus laurentii have been reported in severely immunocompromised patients. C. laurentii infection, especially cutaneous manifestation has been rarely reported so far. Here we report the first case of cutaneous cryptococcosis caused by C. laurentii in Korea. A 47-year-old female who had a refractory AML after allogeneic hematopoietic stem cell transplant underwent salvage chemotherapy resulting in prolonged neutropenia. On the 18th day after the chemotherapy, multiple erythematous umbillicated papules were developed over both arms, back and right thigh, with high spiking fever. Skin biopsy revealed yeast-like organisms with round to oval budding. Despite of empirical antibiotics and oral posaconazole, fever persisted and skin lesions aggravated. Subsequent blood cultures identified that the organisms were C. laurentii. We administered liposomal amphotericin B with a dose of 5 mg/kg, and then her body temperature started to decrease (After 3 days, we changed it to amphotericin B because of the insurance problem). Skin lesions were completely disappeared after the treatment for 21 days. Unfortunately, the patient was deceased after 2 months by progressive leukemia and recurrent infections. We showed that C. laurentii might present with skin lesions as an initial manifestation. Such infection is rare, but it should be considered as a possible pathogen in immunocompromised patients with multiple skin lesions. We also suggest that amphotericin B can be an effective treatment for C. laurentii infection.
Park, Sung-Won,Her, Nam-Yun,Kim, Dong-Seob,Park, Sun-Jin,Lee, Han-Seung,Park, Hak-Jong,Yu, Ju-Hyun The Korean Society of Food Science and Nutrition 1997 Preventive Nutrition and Food Science Vol.2 No.2
CMCase produced by recombinant E. coli JM109 (pCEH#4) containing CMCase gene from Cellulomonas sp. YE-5 was purified to 24.3 fold and 2.6% yield by ammoniumsulfate precipitation, DEAE-cellulose column chromatography and gel filtration on Sephadex G-100. The optimum pH and temperature for CMCase activity were pH 7.0 and 5$0^{\circ}C$. The enzyme was stable between pH 5.0 and 10.0, and up to 6$0^{\circ}C$. The molecular weight of he enzyme was estimated to be approximately 40,000 daltons by SDS-PAGE. Analysis of the amino acid composition showed that the enzyme contained many glycines and acidic amino acids. The enzyme was an endo-type CMCase and the final enzyme reaction product from hydrolysis of Cm-cellulose by the enzyme was cellobiose. {TEX}$K_{M}${/TEX} value determined with CM-cellulose was 1.28mM.
Kyung-Seob Lim,Myung-Ho Jeong,Jong-Eun Park,In-Ho Bae,Dae-Sung Park,Jong-Min Kim,Jung-Ha Kim,Doo-Sun Sim,Keun-Ho Park,Young-Joon Hong,Youngkeun Ahn 한국실험동물학회 2013 Laboratory Animal Research Vol.29 No.4
Single coronary artery is a rare coronary artery anomaly. Very few previous reports of this anatomical malformation in swine have been found. A 22 kg Yorkshire X Landrace F1 crossbred castrated male swine was presented for enrollment in a coronary stent implantion study. Coronary angiography revealed a single coronary artery arising from the right aortic sinus. The right coronary artery and anomalous left coronary artery were implanted with novel coronary stents without any side effects.
Hashed B-트리 인덱스를 이용한 효율적인 무결성 검사
박선섭(Sun-Seob Park),정재목(Jae-Mok Jeong),김형주(Hyoung-Joo Kim) 한국정보과학회 2000 정보과학회논문지 : 데이타베이스 Vol.27 No.2
This paper suggests a new access path, hashed B-tree which is an efficient access method for integrity checking. Hashed B-tree is based on the observation that most query patterns in enforcing integrity constraints are point queries. Hashed B-tree compresses the key by hashing procedure, which reduces the height of tree and results in fast node search. This method has the advantages such as it can be implemented easily and use the B-tree concurrency control and recovery algorithm with minor modifications. 본 논문에서는 무결성 제약을 효율적으로 유지하기 위한 접근 경로인 Hashed B-트리를 제안하고, 기존의 B-트리와 성능을 비교한다. 무결성 제약을 만족시키기 위해 필요한 질의 패턴들이 종점 질의로 구성되어 있다는 점에 착안하여, Hashed B-트리는 키를 해슁을 통해 압축하여 저장한다. 따라서 트리의 높이가 줄어들게 되고 트리의 탐색이 빠르다. 이 기법은 기존의 B-트리와 유사하게 작동하기 때문에 기존 시스템에 많은 수정을 요하지 않고 병행성 제어나 회복 기법을 그대로 사용할 수 있는 장점이 있다.