Isolation and Characterization of Antimicrobial Substance Macrolactin A Produced from Bacillus amyloliquefaciens CHO104 Isolated from Soil

( Seung Je Lee ),( Jeong Yong Cho ),( Jung Il Cho ),( Jae Hak Moon ),( Ki Deok Park ),( Young Ju Lee ),( Keun Hyung Park ) 한국미생물생명공학회 2004 Journal of microbiology and biotechnology Vol.14 No.3

정량적관상동맥조영술의 정확도 및 재현도

조용근,황진용,박헌식,채성철,전재은,박의현 慶北大學校 醫科大學 1996 慶北醫大誌 Vol.37 No.4

목적 : 정량적관상동맥조영술이 최근 널리 보급되고 있지만 국내외를 막론하고 이의 정확도 및 재현도에 관한 연구가 불충분하여 본 연구를 하였다. 대상 및 방법 : 110명의 환자에서 미국 General Electric사의 Advantx L/C/LP 디지탈혈관찰영기와 미국 USCI사의 좌관상동맥용 Judkins형의 Pro-Flo XT^(TM) 6F 도자를 이용하여 좌관상동맥조영술을 같은 각도에서 3회 실시하고 도자의 외경을 일본 Mitutoyo사의 정밀도 0.01㎜의 micrometer로 측정한 후 측정된 도자의 실제 직경과 정량적관상동맥조영술로 측정된 관상동맥의 직경을 비교하였다. 결 과 : USCI® Pro-Flo XT^(TM) 6F 좌관상동맥용 도자의 실제 외경은 1.91±0.03㎜이었고 정량적관상동맥조영술로 측정 한 도자의 외경은 1.94±0.11㎜이었다. 도자를 5.7F로 calibration했을 매 도자의 외경은 1.87±0.12㎜이었다. 세번 다 다른 화상에서 측정한 경우 근위부관상동맥 직경의 차이는 0.02±0.12㎜이었고 같은 화상에서 3회 측정하였던 경우에는 0.11±0.01㎜이었다. 결론 : 정량적관상동맥조영술의 정확도 및 재현도는 사용에 적합한 정도이나 적지 않은 문제점에 대한 보완이 필요하다고 생각된다. During quantitaive coronary angiography(QCA), contrast filled catheter is usually used as a scaling device. However the real diamerer of catheter is almost always smaller than the listed diameter. We measured the real diameter of catheters with precision micrometer(Mitutoyo® Japan). After caliberating the catheter as listed French size and diameter, we did QCA at the same tube position of the diameters of catheter and proximal left coronary artery. All measurements were done 3 times consecutively. The mean real diameter of USCI® Pro-Flo XT^(TM) 6 F left Judkin catheter was 1.91±0.03 ㎜. The mean QCA diamter of the same catheter was 1.94±0.11 ㎜. When we calibrated catheter as 1.91 ㎜. the mean QCA diameter was 1.87±0.12 ㎜. The mean differences of the diameters of the proximal left coronary artery were 0.20±0.12 ㎜ when the measurements were done in three different frames. When the measurements were done in the same frmae, the mean difference decreased to 0.11±0.01 ㎜. We conclude that the precision and reproducibility of QCA are within reasonable range, but more refimement is needed.

전방 또는 전측방 흉수 종양 수술에서 후측방도달법

조경석,박춘근,성재훈,허필우,박춘근,백민우,김달수,강준기 대한신경외과학회 1997 Journal of Korean neurosurgical society Vol.26 No.5

New Criteria for the Consistency in Reasonable Pairwise Comparison Matrices

Jae-Bum Kim(김재범),Yong-Gon Cho(조용곤),Yun-Bae Kim(김윤배),Keun-Tae Cho1(조근태) 대한산업공학회 2010 대한산업공학회지 Vol.36 No.1

Possibility of Application of Artificial Insemination Buffer (AIB) for Increasing of Production Efficiency of Female Cow Offspring

Jae‐Il Bang,A‐Na Ha,A‐Ra Cho,Kyeong‐Lim Lee,MD. Fakruzzaman,Il‐Keun Kong 한국동물생명공학회(구 한국동물번식학회) 2011 발생공학 국제심포지엄 및 학술대회 Vol.2011 No.1

The present research was carried out to evaluate the possibility of female offspring production using artificial insemination buffer (AIB) before artificial insemination (AI). To do it, we carried out the optimization of AIB, making of AIB gun and analysis of affecting AI rate after AIB treatment. AIB made with the base of Tris‐buffer supplemented with L‐arginine and several materials that could be reduced the motility of male sperm compared with female one. This mean that female sperm could be increased the possibility of fertilization with ovum compared with male one. AIB must be deposited into 2nd to 4th cervix by the guide of AIB gun. After 15 min of AIB insertion, frozen semen was deposited into same place after. Total 352 cattle were inseminated with AIB insemination and was not significant difference between AIB and traditional AI rate (56.8 vs. 55.7%). However, AIB AI rate was significantly differs among 12 different farms. The parturition number of cows did not effect on AIB AI rate among 1st to 7th parturition number of cows. The proportion of AIB AI success rates in hanwoo cows was significantly higher than in dairy cows (61.0% vs. 48.7%), but the average AI success rate was not different between AIB and conventional AI (56.8% vs. 55.7%). The female offspring production rate in 2nd to 4th cervix deposition place was significantly higher than in uterus body (77.7% vs. 59.6%, p<0.05). The injection volume of AIB in 5 and 10 ml was significantly higher than in 2 ml (77.7, 78.7 vs. 51.8%, p<0.05), but not different between 5 and 10 ml ABI volume. The best exposure time of AIB in the cervix was 10 and 15 min rather than that of 5 min (79.2%, 77.2% vs. 63.2%, p< 0.05), and so AIB have to expose at least 10 min to get higher female offspring. In conclusion, AIB could be used in AI industry to produce female offspring and also AIB AI can be increased the AI success rate compared with traditional AI rate.

오늘날의 베이즈 추론에 대한 토마스 베이즈의 공헌 연구

曺在根 경성대학교 1987 부산수산대학 논문집 Vol.8 No.3

Among a great variety of statistical approaches, Bayesian inferential procedure is one of the most important approach. Bayesian inference originated from the 'Essay' of Thomas Bayes, issued in 1763. In this study, the contribution of Thomas Bayes to the modern Bayesian infreence was investigated. Comparing Bayes'idea in his 'Essay' with the modern Bayesian inference, we can see that he had given some mere hints on the concepts of inverse probability and prior ignorance. In the strict sense, what Thomas Bayes had proposed is not the concept of prior distribution in modern Bayesian inference.

법랑질 접착에 대한 습윤 효과

고근호,조영곤,진철희,유상훈,김종욱,박병철,기영재,최희영,김종진 大韓齒科保存學會 2004 Restorative Dentistry & Endodontics Vol.29 No.3

This study evaluated the microleakage and interfacial gap between enamel and composite resin under the dry and wet condition of the enamel surface, V shaped class 5 cavities were prepared on the occlusal portion of extracted human molars. Samples were divided into three groups: D group (air dry for 10-15s), BD group (blot dry with moist cotton pellet), and DR group (air dry for 10-15s and rewet with Aqua-Prep F for 20s). Cavities were filled using Aelitefil composite resin after applied One-Step. Microleakage was tested by 2% methylene blue dye solution and the data were statistically analysed by Kruskal-Wallis test and Mann-Whitney test. Also Enamel-resin interface was observed under SEM. Group BD showed statistically lower microleakage than group D (p〈0.05). but there was no statistically significant difference between group BD and DR (p)0.05). At the enamel-resin interface, group D showed the gap of 2 ㎛ thickness, but group BD and DR showed close adaptation. In conclusion, the use of blot dry and rewetting agent (Aqua-Prep F) resulted in decreased microleakage and improved adhesion between enamel and resin when using One-Step.

비만 지표와 흡연,음주,지질,혈당 및 혈압과의 관계

이재근,유병연,조동영 건국대학교 의과학연구소 2000 건국의과학학술지 Vol.10 No.-

It is well known that obesity is an important cause of risk factor of cardiovascular disease, emphasized by many studies and cardiovascular disease has been found to correlate not only to the extent of obesity, but also the fat distribution of the individual. Recently, focusing on obesity of the abdomen, we were able to evaluate the significance of obesity indices by examining correlations between these indices and the risk factors of cardiovascular disease. Three hundred sixty four health examined persons through out-patient department of family medicine, Seoul hospital of Konkuk medical center were chosen as subjects of this study but finally one hundred twenty five examined persons were selected. The auther analysed correlations between obesity indices and cardiovascular risk factors by measuring serum lipid levels, fasting blood glucose levels and blood pressure that are thought to be risk factors of cardiovascular diseases and obesity indices were calculated using anthropometric measurements. The abdominal obesity indices and risk factors of cardiovascular disease, the levels of total cholesterol in the serum, fasting blood glucose levels, systolic and diastolic blood pressure, increased significantly according to age and there was a significant difference in the abdominal obesity indices according to drinking and smoking habits. Systolic and diastolic pressures had significant differences according to the presence or absence of an alcohol drinking history. There were negative correlatons between HDL-cholesterol and obesity indices(r = -0.248, -0.215, -0.204, -0.256, -0.201) and the weakest correlaton was found or noted between fasting blood glucose level and sagittal diameter. Among obesity indices, sagittal diameter and sagittal diameter per height may be important prognostic indicators or risk factors of cardiovascular disease.

六味知黃湯 投與가 高壓環境에 露出된 흰쥐의 血液造成과 臟器造織에 미치는 影響

오재근,강명신,조준용,이영일,최용어 韓國體育大學校附屬 體育科學硏究所 1996 韓國體育大學校附屬 體育科學硏究所論文集 Vol.15 No.1

This study was purposed to investigate the effect of yukmijihwangtang on rat blood components and organ histopathologic changes in the different environments of hyperbaric ambient air. The pharmacological effects of yukmijiwhangtang in oriental medicine have been reported to improve general condition and treat mental and physical weakness due to overload. 84 Male Sparague-Dawely rats, 200-250 g weight, were housed two per cage, fed Standard Rodent Diet with water ad libitum. The animals were assigned to 3 main groups for the blood components and gas analysis : normobaric control group (NC ; N=4), hyperbaric control group (HC ; N=8), hyperbaric medication group (HM ; N=8). HC and HM group were devided into 2 subgroups and kept on different situation of the hyperbaric ambient air (2ATA or 3ATA) for 2 hrs. HM group was administered 10cc extract of boiled yukmijiwhangtang before exposure. For histopathological analysis, hyperbaric groups(HC and HM : N=80) was further devided into 2 subgroups according to atmosphere absolute and exposure period : 2ATA (acute, 1, 2, 3, 4 wks), 3ATA (acute, 1, 2, 3, 4 wks). There were 20 groups in total, with 4 animals in each group. Experimental rats of HM group were administered 10cc extract of boiled yukmijiwhangtang 2 times per day and kept on situation of the hyperbaric ambient air (2ATA and 3ATA) 2 hrs per day for four weeks. In order to record the possible effects of yukmijiwhangtang in hyperbaric condition on the blood components, the rats were killed by decapitation directly after the hyperbaric exposure for 2 hrs. But the administered rats were killed on the morning following the last hyperbaric exposure during 4 wks. The samples were taken 2 hrs, 1, 2, 3, 4 wks after the begining of this study. Blood was collected from posterior abdominal vena cava immediately after decapitation. Organs for histopathological assays in hyperbaric groups (HC and HM) were also removed 2 hrs, 1, 2, 3, 4 wks and fixed at 10% formalin solution. The whole blood of 1㎖ was used for the analysis of pH, PO₂, PCO₂, HCO₃, BE, O₂CT, O₂SAT level by Blood Gas Autoanalyzer (Coning 175, U.S.A). And The rest whole blood of 1㎖ was utilized for the measurement of WBC (white blood cell), RBC (red blood cell), Hb (hemoglobin), Hct (hematocrit), MCV (mean corpuscular volume), MCH (mean corpuscular hemoglobin) level by Microcell Counter (Model; CC-170-TDA Co., Japan). Hematological and blood gas analysis and organ histopathological changes after exposure to hyperbaric ambient air were as follow; (1) Hematological parameters were lower in the hyperbaric medication group than all the control groups without WBC, MCV (2ATA) and MCV, MCH (3ATA). But a statistical significance among the groups was not shown. (2) The hyperbaric medication group was lower than another control groups on all parameters of blood gas analysis after 2 hours exposure to hyperbaric ambient air (2ATA and 3ATA) without O₂SAT. But a statistical significance among the groups was not shown. (3) On observing the histopathological system of the lung with microscope, the congestion, edema and hemorrhage on the alveolar sacs and alveolar wall damage in the hyperbaric control group were heavier than in the hyperbaric medication group.

4주간의 육미지황탕 투여가 최대하운동시 근대 5종 선수들의 혈액성분 및 혈액가스성분 변화에 미치는 영향

오재근,최용어,서인원,조준용,유루리 韓國體育大學校 1997 論文集 Vol.20 No.-

The purpose of this study was to estimate the changes of blood components and blood gases on submaximal exercise after Yuk-mi-ji-Whang-tang administration during 4 weeks. Ten modern pentathlon athletes participated as subjects of this study. The result and conclusion of this study is as follows; The changes of blood components on pre-, post-sumaximal exercise and during recovery time was not significant difference in Yuk-mi-ji-whang-tang administration group except for WBC(p<.05.). But comparative observation of blood gases levels such as pH, PCO₂, PO₂, HCO₃, O₂SAT, O₂CT was showed a tendency of being lower acidity, higher PO₂, lower PCO₂on pre-, post-sumaximal exercise and during recovery time in Hyang-sa-pyung-yi-san than in Yuk-mi-ji-whang-tang administration group.