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Streptococcus lactis IFO 12007 이 생성하는 항생물질 Nisin 에 관한 연구 2 . Nisin 의 생육형 세포와 포자 발아에 미치는 영향
이신호,김현욱 ( Shin Ho Lee,Hyun UK Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.7
The growth of Lactobacillus plantarum, L. bulgaricus, L. casei, L. acidophilus, L. Helveticus, Streptococcus thermophilus, Staphylococcus aureus, Bacillus subtilis, B. coagulans and B. megaterium was inhibitec by 200 IU/㎖ of raisin. In the Presence of various germinants, such as alanine, valine, leucine, isoleucine, methionine, asparagine, glucose and fructose, germination of B. subtilis LDTM1 spore was inhibited by 50㎍/㎖ of raisin at 37℃. The germination of B. subtilis LDTM1 spores was delayed and their outgrowth was inhibited by raisin in the presence of alanine (10mM/㎖) and glucose (10mM/㎖) in the PCA(plate count agar) borth. Heat resistance of B. subtilis LDTM1 spores was decreased by raisin in the sterilized milk.
Bacillus coagulans ATCC 8038의 β - galactosidase 에 의한 탈지유의 유당분해에 관한 연구
안종건,이신호,김현욱 ( Jong Kun Ahn,Shin Ho Lee,Hyun Uk Kim ) 한국축산학회 1981 한국축산학회지 Vol.23 No.6
Hydrolysis of lactose in skimmilk has been studied using β-galactosidase of Bacillus coagulans ATCC8038. β-Galactosidase of Bacillus coagulans ATCC 8038 (103.6 ㎍/㎖ of skimmilk) hydroly zed 30% of total lactose in pasteurized skimmilk (heated for 30 min at 63℃) during the first 5.5 hours, and alteration of skirnmilk concentration from 5% to 16% did not change the hydrolytic capability of this enzyme. When the skimmilk was heated at 92℃ for 30 minutes, the lactose hydrolysis by β-galactosidase of Bacillus coagulans ATCC8038 proceeded 3.8 times faster than that in pasteurized skimmilk.
만성 신질환 환자에서 여러 가지 사구체 여과율 산출 방법간의 비교
김동현 ( Dong Hyun Kim ),강신욱 ( Shin Wook Kang ),고광일 ( Kwang Il Ko ),김찬호 ( Chan Ho Kim ),이주현 ( Ju Hyun Lee ),이진하 ( Jin Ha Lee ),김은영 ( Eun Young Kim ),박정탁 ( Jung Tak Park ),장태익 ( Tae Ik Chang ),김현욱 ( Hyun 대한신장학회 2008 Kidney Research and Clinical Practice Vol.27 No.5
Purpose: Several methods are used to estimate glomerular filtration rate (GFR), but there are limitations in each method. We investigated the variation in GFR measured by different methods in patients with chronic kidney disease (CKD). Methods: 549 patients with CKD stages 2-5, who underwent creatinine clearance (Ccr) and 99mTc-DTPA renal scan, were enrolled. GFR was calculated by using Cockcroft-Gault equation (CG-GFR) and MDRD equation (MDRD-GFR). The correlations between MDRD-GFR and GFR estimated by other methods were analyzed according to CKD stages and age groups (<40, 40-59, and≥60 years). Results: The mean age of patients was 55±19 year (male 60%). CG-GFR, Ccr, and estimated GFR by 99mTc-DTPA renal scan (DTPA-GFR) correlated significantly with MDRD-GFR in all CKD stages and all age groups (p<0.01). Compared to patients with stages 2-4 CKD, however, the possibilities of CG-GFR, Ccr, and DTPA-GFR to be within 30% of MDRD-GFR were significantly lower in stage 5 CKD patients (p<0.05). In addition, the ratio of DTPA-GFR/MDRD-GFR in stage 5 CKD patients was 2.24±1.40, indicating overestimation of DTPA-GFR in these patients. On the other hand, the accuracy of various GFR-estimating methods was higher in patients aged more than 60 years compared to the others. Conclusion: CG-GFR, Ccr, and DTPA-GFR correlated significantly with MDRD-GFR, but there was a wide variation in GFR estimated by various methods. Therefore, a careful interpretation of estimation in GFR is needed according to the stage of CKD and the age of patients.
건강위해성평가에 의한 사무실 실내공기오염물질의 관리항목 확대
노영만 ( Young Man Roh ),이철민 ( Cheol Min Lee ),김윤신 ( Yoon Shin Kim ),김석원 ( Seok Won Kim ),김치년 ( Chi Nyon Kim ),김현욱 ( Hyun Wook Kim ),조기홍 ( Kee Hong Cho ),최호춘 ( Ho Chun Choi ),김정만 ( Jung Man Kim ) 한국산업위생학회 2006 한국산업보건학회지 Vol.16 No.1
This study was performed to deduct the extension possibility of the standards establishment for NO2, O3, Asbestos, Radon, total volatile organic compounds (TVOC) excluded in the indoor air part of Industrial Safety Acts in Korea. The air pollutants were sampled for 30 office buildings from August to September, 2005 in the metropolitan area. The airborne concentrations of NO2, O3, Radon and TVOC were 0.0092 ppm, 0.0035 ppm, 0.57 pCi/L and 423 μg/m3, respectively. The management plan and reduction methods is required in the aspect of indoor air quality(IAQ) because the emission sources of those also exist in indoor as well as outdoor even though those were not exceeded the standards of the Ministry of Environment in Korea. The standard for TVOC in the new and remodeling office has to be established based on the risk assessment when hazard index exceeded "1" in the worst case scenario. In the state of art, the management of each volatile organic compounds has a difficulty due to not enough data for toxicological reference. Therefore, it is suggested that first of all, the standard for TVOC be established and then expanded to each materials for decision-making of improvement of IAQ in office.