Erratum to: Intracellular Substrates of a Heme-Containing Ascorbate Oxidase in Pleurotus ostreatus

Seung-Rock Lee,Woo-Jeong Joo,Yong-Un Baek,Youn-Kyong Lee,Seong-Woon Yu,Yeon-Ran Kim,Kee-Oh Chay,Seung-Hyun Cho,Sa-Ouk Kang 한국미생물학회 2009 The journal of microbiology Vol.47 No.6

In the online version of the article the name of the second corresponding author is misspelled. The correct spelling is Sa-Ouk Kang. The online version of the original article can be found under doi: 10.1007/s12275-008-0307-8

RAPD-PCR을 이용한 마우스 계통간 유연관계

강은영,성승현,이진성,김선호,서동상 성균관대학교 생명과학자원연구소 1996 生命資源科學硏究 Vol.3 No.2

We have analyzed the genetic relationship among the mouse strains using RAPD-PCR. Polymorphic RAPD markers amplified from various primers were used to analyze the genetic relationship among seven mouse strains, CBA, C57BL/6, BALB/C, NOD, A/wy, DBA2, and AKR. The genetic similarity coefficients were estimated using the RAPD markers by UPGMA method. The genetic similarity coefficient between CBA and NOD was 0.474. This value was lower than any other genetic similarity coefficient among the strains tested. And CBA-specific RAPD band patterns were observed in 5 primers from 6 polymorphic primers used. This study makes possible phylogenetic identification among the inbred mouse strains at the molecular level using RAPD-PCR techniques.

지능장애를 동반한 근긴장성 이양증 환자에서 보인 앞쪽 측두엽 백질의 병변

강현구,정주리,이학승,장혁 圓光大學校 醫科學硏究所 2008 圓光醫科學 Vol.23 No.1

In myotonic dystrophy(MD), a characteristic myopathy is accompanied by abnormalities of other systems, including the brain. The pathogenesis of MD has not been clearly explained. Sometimes white matter lesion was noted on brain MRI, but its causative roles and association with intellectual impairment in MD was not clea yet. We report a case of myotonic dystrophy with intellectual impairment and temporal white matter lesions.

Simplified Effective Compressive Strengths of Columns with Intervening Floor Slabs

Seung?Ho Choi,Jin?Ha Hwang,Sun?Jin Han,Hae?Chang Cho,Jae Hyun Kim,Kang Su Kim 한국콘크리트학회 2020 International Journal of Concrete Structures and M Vol.14 No.5

The current design codes discuss the effective compressive strengths of columns, which reflect a decrease in load transfer performance that can occur when columns and slabs have different concrete compressive strengths. The effective compressive strength of a column increases as it is confined by the slab, and the design codes mandate three different effective compressive strengths for interior columns (confinement on four sides), exterior columns (confinement on three sides), and corner columns (confinement on two sides). For both corner and exterior columns, the confinement effect of the slab is significantly smaller than that for the interior column, and there is a more marked decrease in load transfer performance. However, there is still a lack of theoretical studies investigating the effective compressive strengths of the corner and exterior columns. Therefore, based on the analysis model established in previous research, this study has proposed an equation for calculating the effective compressive strengths of the corner, exterior and isolated columns without any confinement effects of the slab. In addition, axial loading tests of isolated columns were conducted and the proposed equation was verified.

Rat의 복강내에 투여한 5-fluorouracil-polyglycolic acid 제형이 장기에 미치는 영향에 관한 연구

강대영,송규상,최정목,노승무,정경수,오정연,김진향,양준묵,최선웅,이진호,조준식,민병무,김용백,김창식,박근성,김승영,김학용,인현빈 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

For more effective intraperitoneal chemotherapy, the authers made 5-fluorouracil-polyglycolic acid composite disks(FU-PGA disks) with 5-fluorouracil and polyglycolic acid, a biodegradable polymer. We inserted the FU-PGA disk into the peritoneal cavites of Sprague-Dawley male rats, the control and three experimental groups; one FU-PGA disk insert group(300mg/kg), two FU-PGA disk insert group(600mg/kg), and three FU-PGA disk insert group(900mg/kg). The control group received a similar number of PGA disk inserts. A pharmacokinetic study was performed to measure the 5-fluorouracil concentration in the peritoneal fluid, blood, and tissues(liver, kidney and heart) at 24 hours, 72hours and 168 hours after insertion of the FU-PGA disk. Light and electron microscopic studies were done. The results were as follows: 1) The number of white blood cells and platelets decreased after FU-PGA insertion. The degree was proportional to the duration and amounts inserted. The change in the number of red blood cells varied slightly. 2) Light microscopically, slight changes were noted at 168 hours in the 3 disk insert group (900mg/kg). Mild fatty change and hepatocyte degeneration around the central veins of the liver were noted, with vacuolar degeneration in the proximal convoluted tubules of the kidney. 3) Electron microscopically,the liver showed focal increases of lipid droplets in the hepatocytes, and irregular nuclear membrane with focal nucleolar segregation of the fibrillar and granular elements. Also the double membranous structure of the hepatocytes and Kupffer cells was widened with bleb formation. The kidney showed wide separation of the nuclear double membrane in the proximal convoluted tubular cells and mesangial cells, with vacuolation and myelin figure formation in the mitochondria of the proximal convoluted tubular cells, at 72 hours and 168 hours in the 2 to 3 FU-PGA insert groups. The heart showed focal loss of cristae,vacuolation and myelin figure formation in the mitochondria of the 2 to 3 FU-PGA insert groups. In conclusion, despite the large amont of FU-PGA inserted, the histopathological changes in the liver, kidney and heart were slight, and consonant with the very low amount of 5-fluorouracil concentrations detected in the liver, kidney and heart. The above results suggest that the FU-PGA composite can serve as a new device for releasing drugs in a controlled manner and easily targeted to intraperitoneal organs. This device can improve the efficacy of intraperitoneal chemotherapy for gastric cancer.

유방선암의 유형에 따른 c-erbB-2, p53, bcl-2, 그리고 c-myc의 발현

강영근,조현득,오미혜,김의한,양승하 순천향의학연구소 2006 Journal of Soonchunhyang Medical Science Vol.12 No.2

Breast carcinoma is a common malignant tumor in female of the korea. Various oncogenes have been found in malignant tumor cells. There were many reports or correlation between the prognosis of patients and c-erbB-2, p53, bcl-2, and c-myc, but is controversial. We performed immunohistochemical stain for above antigenic protein for 80 cases of breast carcinoma and evaluated expression rate of each antigens, and we compared their correlation with prognosis of patients. The results were as follow; 1) The expression rates in breast carcinoma was c-erbB-2 80%, p53 56.3%, bcl-2 51.3% and c-myc 53.8%. 2) c-erbB-2 showed no significant difference according to histologic types, grade, and lymph node metastatic status of breast carcinoma. 3) p53 showed higher expression rate in metastatic cases compared to non-metastatic cases, and it showed higher expression rate according to increasing of grade without significant difference. There is no significant difference according to types. 4) The expression rate of bcl-2 in breast carcinoma be lowed according to increasing of grade. There was no significant difference according to types, side, and status of lymph node metastasis. 5) c-myc showed higher expression rate in non-metastatic cases compared to and metastatic cases, and it showed decreasing expression rate according to increasing of grade without significant difference. There is no significant difference according to types. 6) p53 and bcl-2 in breast carxinoma showed reverse corre1ation(P < 0.05), and bc1-2 and c-myc showed close correlation without statiscally significance. Above results showed that p53 may be related to poor prognosis of the patients and c-myc may be related good prognosis in breast carcinoma. There was reverse correlation between p53 and bcl-2 and bcl-2 and c-myc may be correlated closely. c-erbB-2 and bcl-2 showed no interrelation to prognosis.

한우, 칡소 및 제주 흑우 Calpain-Calpastatin 유전자 다양성

이승환,김승창,조수현,최봉환,Aditi Sharma,임다정,당창권,장선식,김재환,고문석,양보석,강희설 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

The aim of study was to investigate genetic diversity for the calpain/calpastatin gene in three Hanwoo breeds [(Brown (n=62), Brindle (n=81) and Jeju Black (n=30)]. Random samples from three breeds of Hanwoo were selected and genotyped for the 7 SNPs of calpain/calpastatin using TaqMan method. Allele frequencies were investigated for CAPN1/CAST gene. Allele frequency of CAST2 SNP was 0.75, 0.59 and 0.22 for Brown, Brindle and Jeju black, respectively. The CAST3 revealed allele frequency of 0.59 and 0.57 in Brown and Jeju Black, while it showed very low allele frequency (0.07) in Brindle. In particular, favorable allele (G allele) for the CAPN1-2 SNP which was shown a strong association with tenderness in Taurine and Indicine cattle revealed 16% and 17% higher allele frequency in Brown Hanwoo (0.82) comparing Brindle (0.66) and Jeju Black Hanwoo (0.65). AMOVA demonstrated that among population variance occupied only 10% of total variance and among individual variance was 0%, while within individual variance was 90% of total variance. This result showed that population effect contributed very small portion of genetic to these three Hanwoo breeds, while within individual variance contributed large portion of genetic diversity within these Hanwoo breeds. In conclusion, three Hanwoo breeds (Brown, Brindle and Jeju black) showed a genetically homogeneous based on the 7 SNPs of CAPN1/CAST gene and it came from same ancestor to form modern Hanwoo breed.

FIB 신뢰성 평가를 위한 나노패턴의 설계 및 측정

강현욱,이승재,조동우 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

FIB (Focused ion beam) system is one of the most important equipments for the nano-scale machining. Various researches have been performed, since it can etch the material and deposit 3-D structure with high-aspect-ratio in the nanometer scale. In spite of those researches, the definite method for the reliability of FIB system has not been reported. In this paper, we proposed the reliability assessment method through nano-pattern fabrication. In the fabricated nano-pattern, the characteristics of FIB system are included. Using this effect, we tried to assess the FIB reliability. First, we suggested reliability assessment items and nano-patterns. And, to know the suitableness of the proposed method, we fabricated several nano-patterns using Nova200(FEI Company) and SMI2050(SEIKO) which are FIB apparatuses. The fabricated nano-patterns are measured with SEM (Scanning Electron Microscope) and compared with designed dimensions. And the compared results showed that the proposed method is suitable for the assessment of FIB system reliability.

물리교육의 효율적인 교수-학습 지도 방안 : 빛 단원을 중심으로 learning methods of physics education

강현식,박승태,양동익 全北大學校 敎育大學院 1983 敎育論叢 Vol.3 No.-

Teaching physics education, various materials have been used. But many kinds of equipments are not sufficient and their operations are very complecate. On the other hand, it takes a lot of time for preparations. The physical experiments should decide the directions of lectures and motivate the learning students. The most remarkable discovery made by physical science is physical phenomena itself. The central problem in teaching physics today is to establish the principles of physics which consist of the basis of all physical phenomena. And the demonstration experiments are used frequently inside and outside the classrooms, and the operations of experiments are convinient to impulse of interests of students. In order to update the teaching and learning method of physics education effectively, we have studied“LIGHT”in high school's physics using improved method by the experiments though the analysis and investigation of the measuring results.

자궁경부 상피암에서 Human Papillomavirus(HPV) 감염에 관한 연구

강현욱,김창진,오승훈 순천향의학연구소 1997 Journal of Soonchunhyang Medical Science Vol.3 No.2

The uterine cervical carcinoma is the most common malignant tumor among Korean women. The pathogenic mechanisms have not been elucidated so far. Several lines of evidence suggest that sexually transmittable agents are responsible for the pathogenesis of uterine cervical carcinoma. Among them, human papillomavirus(HPV) was considered to be the most possible oncogenic agent. The HPV types 6, 11, 16, 18, 31, 33 and 35 are the most important types involved in cervical lesion among 70 HPV types so far known. The uterine cervical carcinomas containing HPV-18 gene in the nuclei are more aggressive than those comtaining other types of HPV genes. It would be helpful to type the HPV in the uterine cervical carcinoma for the prediction of prognosis. In this study, the types of HPV were determned in the uterine cervical carcinoma, comprising 30 cases of cervical intraepithelial neoplasia(CIN), 10 cases of microinvasive carcinoma and 15 cases of invasive carcinoma, by polymerase chain reaction(PCR) and restriction fragment length polymorphism(RFLP). The results were as follows: 1. HPV DNA was detected in 19 cases(63.3%) of 30 if CIN. The types 16, 18, 33 and other high risk HPVs were 33.3%, 6.7% and 10% respectively. 2. In CIN Ⅱ and CIN Ⅲ, HPV-16, 18 were 54.4%, 28.6% and 9.1%, 21.4% respectively. 3. In microinvasive carcinomas, HPV-16 and 18 were 50% and 20% respectively. 4. In invasive carcinomas, HPV-16 and 18 were 26.7% and 33.3% respectively. Above results suggest that HPV infections have positive relationship with uterine cervical carcinoma. And as the HPV-18 type DNA has some role for the progression of the carcinoma, it would be feasible to type HPV in uterine cervical carcinoma for the prediction of the prognosis.