양어용 사료첨가제로서 감귤발효액 (EM-Fermented Orange)의 항산화특성

문상욱,이영돈,이준백,고유봉 제주대학교 해양연구소 2000 해양자원연구소연구보고 Vol.24 No.-

Mandarine orange (Citrus unshiu Marc.) only added with sugar was fermented by effective microorganisms (EM). called "EM-fermented orange". EM was mainly composed of lactic acid bacteria. phototrophic bacteria and yeast. As pH of EM-fermented orange reached 3.5 to 4.0 in the course of fermentation. the incubation was stopped. and then. EM-fermented orange was preservable at room temperature for about 6 months. Composition and concentration of free amino acids in EM-fermented orange were analyzed. Concentration of total amino acids was 167 mg/l. and the relative content of carnosine (β-alanyl-L-histidine) which was well known as a kind of antioxidant materials was very high. 41%. In addition. crude extract showing antioxidant activity could be obtained from EM-fermented orange using some organic solvents. The antioxidant activity of the crude extract was equivalent to about 9% of that of vitamin E by the use of 1.1-diphenyl-2-picrylhydrazyl (DPPH) method. It was suggested that EM-fermented orange having antioxidant characteristics could promote the health of fish.

인체대장암에서의 Cyclin 유전자의 발현

백원기,서민호,서성일,문성희,박종욱,최병길,배옥석 대한대장항문학회 1996 Annals of Coloproctolgy Vol.12 No.2

대학생을 위한 효율적인 학습습관 훈련 프로그램

이희백,천성문,안병환 대진대학교 교육대학원 교육연구소 1999 교육연구 Vol.1 No.1

The development of the efficient learning habit improves the learning ability and helps the adjustment of school life and self-development. Therefore this study is to develop the various training programs for learning habit improvement of college students and apply them to school.

농산 폐기물인 Allium속 뿌리를 이용한 Ni와 Pb 이온 제거

김성조,백승화,김운성,문광현 한국식품영양학회 1998 韓國食品營養學會誌 Vol.11 No.6

농산물의 갈무리시 발생되는 건조한 마늘, 쪽파 및 대파 뿌리 분말을 흡착제로 이용하여 수용액 중 이온 상태로 존재하는 Ni과 Pb의 흡착력을 시료의 입자별, 중금속의 농도별, 용액의 온도별, pH별로 분석하였다. 중금속 이온들은 흡착제의 입자크기가 작을수록 흡착률이 높았고, 그중 마늘뿌리가 Pb에 대해 높은 흡착력을 나타냈다. 수용액중 중금속 농도가 높을수록 중금속들이 흡착되는 양이 증가하였고, 흡착률은 흡착제와 중금속의 종류에 따라 차이가 있었다. 온도의 증가는 쪽파와 대파에서 Ni과 Pb가 감소되었다. 알칼리 조건에서 비교적 흡착이 잘 되는 중금속은 Ni이며, 중성과 산성조건에서는 Pb의 흡착량이 높았다. A batch experiment was conducted to evaluate the removal capacity of welsh onion(Allium fistulosum L.), shallot(Allium ascalonicum L.), garlic(Allium sativum L.) roots as an adsorbent for Ni and Pb in aqueous solution. One gram of the dried Allium root powder was reacted in 100ml of solution containing 10㎎ of each heavy metal and effects of metal concentration, pH, temperature, and size of adsorbent on the removal efficiency were evaluated. The results were as follows : The amount of adsorption of heavy metal ions were higher with the smaller particles size of adsorbent. Garlic root was high adsorption capacity of Pb, especially. The higher concentration of heavy metal solution was, the more amount of adsorption of heavy metals was. The adsorption ratio was differed from a kind of heavy metal. As the temperature increased, the amount of adsorption of Ni and Pb by shallot and welsh onion were decreased. The amount of adsorption of Ni was high under alkali conditions but the amount of adsorption of Pb was high under neutral and acidity condition.

논유구 조사법 재론

곽종철,문백성 한국고고학회 2003 湖南考古學報 Vol.18 No.-

이 글은 1997년에 소개한 논유구 조사법의 일부를 보완한 것으로, 특히 가공면(加工面) 개념과 층상하면의 계단상단차 개념을 새로이 추가하거나 보완하였다. 가공면 개념은 논층으로서 인정할 수 있는 요소가 됨과 동시에, 해당 논층이 삭평ㆍ변형되었는지를 살펴보는 개념이기도 하다. 따라서 가공면 개념은 논유구 발굴조사에 있어서 중요한 지침이 되며, 더욱이 기존 조사되었던 계단식 논에 보이는 여러 의문점, 예를 들면 기존 조사되었던 계단식 논에서는 거의 확인되지 않았던 논둑, 사람ㆍ소발자국 흔적, 경작구 흔적, 작물재배 흔적 등의 문제나, 논 하나의 폭이 너무 좁으며, 벼의 plant-opal 기준치가 너무 낮게 나오는 점 등에 대한 해명의 실마리를 얻을 수 있게 되었다. 한편, 이 가공면 개념에 기초해 이후의 논유구 발굴 조사는 해당 논층의 상면과 하면을 대상으로 2회에 걸쳐 실시할 필요성도 아울러 제기하였다.

사람 혈청 Vitronectin의 정제 및 항 Vitronectin 다클론 항체의 생산

장윤혜,김백남,이성순,문경,김승후,이재담 大韓免疫學會 1996 大韓免疫學會誌 Vol.18 No.2

Background: Vitronectin is one of major cell- adhesive glycoprotein in mammalian serum and plasma ; the other is fibronectin. It is a mixture of 65 and 75kDa protein in plasma which promotes spreading of a variety of cultured cells ,inhibits the cytotoxicity of membrane attacks complex C5b-7 and modulates thrombin-antithrombin III activity. Human plasma and serum contain 10-40mg of vitronectin per 100ml,but only a few mg or less of vitronectin can be isolated with a 0.5-20% recovery efficiency through very long processes or with expensive,commercially available monoclonal antibody. In this study, we purified the vitronectin from human plasma and produced anti-vitronectin polyclonal antibody using purified vitronectin. Methods: Vitronectin was purified from the human plasma by heparin-sepharose column and its efficacy was measured by cell spreading assay. Anti-vitronectin polyclonal antibody produced and confirmed by ELISA and immunoblotting. Results: This procedures produced about 0.8mg vitronectin from 100ml human plasma within 2 days. 1) Purified vitronectin promoted spreading of HepG2 hepatoma cells on substrates with a half maximal activity at 0.lug/ml. 2) In SDS-PAGE analysis of purified protein, 2 bands were found and their molecular weights were 75kDa and 65kDa,respectively. 3) The immunoblotting assay showed that the bands of molecular were same site as SDSPAGE analysis. Conclusion: Simple,rapid purified vitronectin by heparin-sepharose column and anti-vitronectin antibody may facilitate the elucidation of vitronectin function and action mechanism in human body.

Four-circle Diffractometer를 이용한 결정방위행렬과 단위포상수 결정

서일환,이진호,심해섭,이정수,성백석,이창희,김문집 순천향대학교 기초과학연구소 1999 순천향자연과학연구 논문집 Vol.5 No.2

A theoretical process to determine the unit cell parameters a, b, c, , β, γ of single crystals and then to collect intensities of ?? using four-circle diffractometer has been shown.

Reciprocal Lattice Explorer의 原理와 使用法

徐日煥,李珍昊,秋錦洪,林星秀,柳保盈,朴晶蘭,金文執,趙素羅,金憲俊,李正秀,成百石 충남대학교 자연과학연구소 1993 忠南科學硏究誌 Vol.20 No.2

Reciprocal lattice explorer는 de Jong-Bouman camera와 Buerger precession camera를 合친것이다. 이 explorer를 使用하면 goniometer에 한번 固定한 試料를 使用하여 그 試料의 空間群을 決定하는데 必要한 모든 寫眞을 撮影할 수 있으며 그들은 찌그러지지 않은 逆格子面의 寫眞들이다. 本 論文에서는 de Jong-Bouman 과 Buerger precession 寫眞術의 原理와 使用法을 記述 하였고 또한 de Jong-Bouman의 振動寫眞과 zeroth layer 寫眞으로부터 11個 Laue群의 識別方法도 提示하였다. The reciprocal lattice explorer is an instrument which incorporates the principles of both the Buerger precession and the de Jong-Bouman methods. On the explorer all photographs which are necessary for a space group determination can be taken with a single setting of a crystal and the photographs show undistorted pictures of the reciprocal lattice planes. In this paper, the principles and the usages of the de Jong-Bouman and the Buerger precession photography are described, and a method of 11 Laue group identification using the de Jong-Bouman oscillation and zeroth layer photographs is shown.

粉末法을 爲한 多重度 因子

徐日煥,秋錦洪,李珍昊,林星秀,柳保盈,朴晶蘭,金憲俊,成百石,李正秀,金文執 충남대학교 자연과학연구소 1993 忠南科學硏究誌 Vol.20 No.1

The multiplicity factor, which may be defined as the number of different planes in a form having identical interplanar spacing and identical intensity, is tabulated here for eleven Laue groups on the basis of their symmetries.

Comparison of COVID-19 and Other Human Coronavirus Pneumonia

( Moon Seong Baek ),( Seong-ho Choi ) 대한결핵 및 호흡기학회 2020 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.128 No.-

Introduction The aim of this study was to compare the clinical characteristics between coronavirus disease 2019 (COVID-19) and other human coronaviruses (HCoVs) pneumonias. Methods This study was performed at an 850-bed university-affiliated tertiary hospital in the Korea. From January 2015 to July 2020, 109 consecutive patients over the age of 18 years with confirmed COVID-19 and other HCoVs were enrolled. We compared the clinical characteristics between COVID-19 and other HCoVs pneumonias. Result During the study period, 19 patients with COVID-19 pneumonia and 40 patients with HCoVs pneumonia were analyzed. The median age was 70 years (IQR 62-78 years) and male patients were 32 (54.2%). The patients with HCoVs pneumonia had a higher rate of dyspnea compare with the COVID-19 pneumonia (15.8% vs. 47.5%, p=0.019). Additionally, Charlson comorbidity index, CURB-65, and SOFA score in HCoVs group were higher than COVID-19 group. Lactic dehydrogenase was higher in COVID-19 group (316 IU/L [IQR, 220-396] vs. 255 IU/L [IQR, 186-286], p=0.042) and CRP was higher in HCoVs group (29.5 mg/L [IQR, 11.8-163.3] vs. 101 mg/L [IQR, 41.6-184.2], p<0.001). None of the COVID-19 group had co-pathogen, however, co-pathogen was identified in 55% of HCoVs group. Commonly co-infected pathogens were Streptococcus pneumoniae (12.5%), Haemophilus influenza (12.5%), and influenza virus (10%). Radiologic findings demonstrated that bilateral pneumonia and ground-glass opacity were predominant in COVID-19 group compared with the HCoV group. Conclusions Patients with HCoVs pneumonia initially presented more severe symptoms and higher severity than those with COVID-19 pneumonia. We suggest that this difference in the severity between two groups is derived from the presence or absence of co-infection.