Catalytic oxidation of hydrogen at nanocrystalline palladium surfaces

Oh, Chanick,Hong, Kwan Soo,Lee, SangGap,Park, Chung-hyun,Yu, Insuk IOP Pub 2006 Journal of physics, an Institute of Physics journa Vol.18 No.13

<P>We studied hydrogen adsorption onto the oxidized nano-palladium surface using <SUP>1</SUP>H NMR. In the α phase, the incoming hydrogen molecules dissociate and form OH<SUB>ad</SUB>. We confirm that the <img SRC='http://ej.iop.org/images/0953-8984/18/13/001/cm210477ieqn1.gif' ALIGN='MIDDLE' ALT='\mathrm {OH_{ad}} \rightarrow \mathrm {H_2O}(\uparrow) '/> transformation occurs during the α–β phase transition by observing a decrease in OH<SUB>ad</SUB> resonance intensity.</P>

Modulation of Gene Expressions and Enzyme Activities of Methionine Sulfoxide Reductases by Cold, Aba or High Salt Treatments in Arabidopsis

Oh, Jee-Eun,Hong, Suk-Whan,Lee, Yunsook,Koh, Eun-Ji,Kim, Kideok,Seo, Youngwon,Chung, Namhyun,Jeong, Moonsoo,Chang,Chang, Cheolseong,Lee, Byoungcheon,Kim, Kyoung Heon,Lee, Kwangwon,Lee, Hojoung 생명자원연구 2005 생명자원연구 Vol.13 No.-

尿中 抗醒園에 關한 硏究

朴貞五(Chung Oh Park),李炯春(Hyeong Choon Lee) 한국환경보건학회 1987 한국환경보건학회지 Vol.13 No.1

A study on detection rates of acid-fast bacteria in urine by three sampling methods was performed on 898 cases randomly sampled from peoples who visited Dr. Chung’s Health Lab. from January. to December, 1983. Positive rate by 5 times sampIing of morring urine was 7.0% and 12.5% higher than that of 24 hours sampIing. Therefore, 5 times sampling of morning urine method was considered to be desirable method for the test of ambulatory cases.

尿中 抗酸菌에 관한 연구

Park, Chung-Oh,Lee, Hyeong-Choon 한국환경보건학회 1987 한국환경보건학회지 Vol.13 No.1

A study on detection rates of acid-fast bacteria in urine by three sampling methods was performed on 898 cases randomly sampled from peoples who visited Dr. Chung's Health Lab. from January to December, 1983. Positive rate by 5 times sampling of motring urine was 7.0% and 12.5% higher than that of 24 hours sampling. Therefore, 5 times sampling of morning urine method was considered to be desirable method for the test of ambulatory cases.

生體內 藥劑耐性 및 Plasmid 傳達에 關한 硏究

金鎬薰,李明遠,李英姬,金基湘,兪天權,吳明燉,李悌煥,李点揆,琴東吉,鄭泰華,李潤台 국립보건연구원 1989 국립보건원보 Vol.26 No.

Hepatic Cirrhosis Occurring in a Young Woodchuck(Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus(WHV)

Kyu-shik Jeong,정원일,Jae-yong Chung,Mi-young An,Chae-yong Jung,Gyoung-jae Lee,Jong-soo Kang,Byeong-cheol Kang,Young-heun Jee,Bruce H Williams,Young-oh Kwon,Da-hee Jeong 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Cirrhosis Occurring in a Young Woodchuck (Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus (WHV)Da-hee Jeong, Won-il Jeong, Jae-yong Chung, Mi-young An, Chae-yong Jung, Gyoung-jae Lee1, Jong-soo Kang1, Byeong-cheol Kang2, Young-heun Jee3, Bruce H Williams4, Young-oh Kwon5 and Kyu-shik Jeong*College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea1Shinwon Scientific Co., LTD, Research Institute, Suwon, Korea2Clinical Research Institute, Seoul National University, Seoul 110-744, Korea3College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea

향신료와 야채류가 세균의 성장에 미치는 영향(Ⅰ)

이건일,정영건,권오진 효성여자대학교 부설 한국환경위생연구소 1992 환경위생연구 Vol.2 No.1

본 실험은 일반가정의 식탁에서 흔히 볼 수 있는 향신료 및 야채류 14종에 대해 3주의 gram양성 및 4주의 gram 음성균의 성장에 미치는 영향을 조사하였다. 공시균의 NaCl에 대 한 내성은 Lactobacillus casei, Staphylococcus aureus, Enterobacter aeroge-nes는 7%의 NaCl에서도 성장하여 내성이 강하였고, 그외의 공시균은 5-7%의 NaCl에서 성장저해효과가 있었다. 열저항성은 75℃이상%서 공시균의 성장이 억제되어 85℃에서는 Bacillussubtilis, Enterobacter aerogenes를 제외한 공시균은 성장이 완전히 저해되었다. 항생물질의내성은 Pseudomonas aeruginosa가 본 실험에 이용된 모든 항생물질에서 MIC가 400 mg/ml로나타나 개성이 가장 강하였으며 Shigella sp.은 MIC가 100 mg/ml로 내성이 가장 약하였다.마늘에서는 Pseudomonas aeruginosa를 제외 한 모든 공시균에서 , 엽차에서는 Bacillus subtilis,Klebsiella pnewmoniae, Shigella sp.에서, 쑥에서는 Staphylococcus aureus, Enterobacter aeroge-nes, Klebsiella pneumoniae, Pseudomonas aeruginosa, Shigella sp.에서 각각 항균작용이 있었으며, 생육저해 농도는 마늘은 0.5-0.4%, 엽차는 4.0-5.0%, 쑥은 2.0-10.0%로 나타났다. This study was carried out to investigate the influence of food spi-ces and vegetables, which are commonly avaible on the dining table everyday,on bacteria growth. Total 14 kinds of food spices and vegetables were sampledin Kyungsan market in Kyungsan city. 7 strains of bacteria were used in thisexperiment as test strains which were 3 strains of Gram positive bacteria (Bacil-lus subtilis,Lactobacillus casei and Staphylococcus aureus) and Gram negative4 strains (Enterobacter aerogenes, Klebsiella pneumoniae, Pseudomonas aerugi-nosa and Shigella sp.) . The results summerrzed were as ronows: 1. The growth of all test strains except Pseudomonas aeruginosa was inhibi-ted by water extracts of raw garlic with concentrations ranging 0.5% to 4.0%. 2. Bacilus subtilis, Klebsiella pnewmoniae and Shigella sp. where not grownin tea with concentrations ranging 4.0% to 5.0%. 3. Water extracts of wormwood also interfered all strains growth exceptBacillus subtilis of which inhibitory concentrations were ranged 2.0% to 10.0%. 4. In susceptibilities of test strains to NaCl solutions the most sensitivestrain was Bacillus subtilis while Enterobacter aerogeneg was showed strongresistance to each different concentration of this solution. Almost the growthof test strains except Enterobacfer aerogenes were inhibited in over 4% of thissolution. 5. GeneraIBy all of test strains were resisted to penicillin G whereas theyall were susceptible only to streptomycin. Shigella sp. was markedly sensitiveto all of antibiotics used in this experiment and MIC of this strain to them was100 mg/ml while Pseudomonas aeruginosa was strongly tolerable to the all ofantibiotics and its MIC to them was 100+ mg/ml. 6. Bacillus subtilis and Enterobacter aerogenes were able to grow until85℃ in gradually increasing temperature.

Benzo(a)pyrene에 의해 유도된 간기능 장해에 미치는 세신 추출액의 영향

정영건,권오진,윤수홍,이송애,이주영 효성여자대학교 부설 한국환경위생연구소 1993 환경위생연구 Vol.3 No.1

탄소화합물의 불완전 연소 및 열분해에 의해 생성되는 다환방향족 탄화수소로 간 실질세포에서 cytochrome P_450에 의해 산화되는 간장해 물질인 benzo(a)pyrene으로 유도한 rats의간독성 발현에 미치는 세신 수침액의 예방 및 치료 효과를 실험한 결과 세신 수침액의 투여는B(a)P 투여로 현저하게 증가된 혈청 및 간장의 transaminase 활성을 유의성 있게 감소시켰으며 그효과는 조직에서 보다 우세하였다. 그러나 세신 수침액이 B(a)P투여로 증가한혈청 total cholesterol과 phospholipid 함량을 감소시킬 수는 있었지만 그 효과는 약하여 지질대사에는 세신의 작용이 미미할 것으로 보인다. Effects of Asiasari Radix, which is herbal drug used frequentlyin the oriental prescriptions, water extract on the liver-protective activities wereinvestigated in the rats. Asiasari Radix water extract, when administered intothe gastric intubation, produced liver-protective effect against benzo(a)pyreneinduced liver damage. The results obtained from enzyme assay, measurement of serum and liveralanine aspartate aminotransferase(AST, ALT) and lipid composition indicatedthat Asiasari water extract showed significant liver-protective activities againstbenzo(a)pyrene-induce hepatotoxicity.

Bi₁₂SiO? 단결정의 탄성광학적 특성

이수대,설정식,오상범 慶南大學校 附設 基礎科學硏究所 1991 硏究論文集 Vol.3 No.-

We measured the thermal expansion coefficient, the variation of refractivity and the stress-optical coefficient of the Bi₁₂SiO?? single crystal by the Mach-Zehnder interferometer. The thermal expansion coefficient of the Bi₁₂SiO? single crystal was 9×10?? /℃ at the near room temperature and 1×10?? /℃ at the near 200℃. The refractivity of the Bi₁₂SiO?? single crystal that was measured from the Brewster angle at the room temperature was 2.540. The stress optical coefficient q₁₃ was 6.6×10?? m²/N at the room temperature.

요추 추간판 탈출증의 수술 요법과 효소 요법과의 비교 연구

오석전,김광명,김남규,정환영,이경석 한양대학교 의과대학 1987 한양의대 학술지 Vol.7 No.2

A comparative study was presented on three different therapeutic methods for herniated lumbar discs, i.e., standard discectomy, microsurgical discectomy and chemonucleolysis. For seven year period from 1980 to 1987. 3000 patients with herniated lumbar disc were selected for comparison. Each thousand patients received one of the above three methods. Not only the overall success rate but also various clinical characteristics were compared and analysed with chi-square tests. Microsurgical discectomy ccording to Chung's modified method brought the best results in not only success rate but also in failure and complication rates. The efficacy of chemonucleolysis was relatively low in this comparision, but in selected cases, it was as effctive as microspurgical discectomy. Along with its strong advantages in hospital stay, time to return to work and operating time, chemonucleolysis was the least invasive one. Thus chemonucleolysis could be perfomed with better expected success rate and the following situations. 1) The age of patient was less than 50, 2) radiating pain was a dominant symptom, 3) the symptom lasted shorter than 1 year, 4) lesions were not in L5-S1 level, 5) the patient had more than 3 abnormal findings in 5 physical and neurological signs, i.e., motor weakness, detmatomal sensory loss, reflex change, positive straight leg raising test and crossed straight leg raising test, and 6) no severe compression in myelogams. In the other two situations, chemonucleolysis could be indicated as an initial treatment. There are 7) patients of over 70-year-old and 8) lesions in more than 3 levels. No serious complications were not found in chemonucleolysis. Meanwhile in the following cases, microsugical discectomy should be considered as the first therapeutic method. 1) patient in the 6th and 7th decades, 2) low back pain as a dominant symptom, 3) duration of symptoms more than 1 year, 4) lesions in L5-S1, 5) only 2 abnormal findings in 5 signs decribed above, and 6) severe compression in myelograms. Standard discectomy did not show any significant advantages over the two methods in this comparative analysis. Any single therapeutic method could not be the best way in the treatment of patients with the herniated lumbar disc. It is desirable to choose the most suitable method for each patient according to not only the success rate of an individual method but also his clinical characteristics, radiological features, surgeon's experience and preference, and the choice of the patient himself.