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서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)
김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2
Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.
물체의 수중낙하에 대한 아동 및 청소년의 사전생각과 사후생각 형성
김헤라,유안진 대한가정학회 2002 Family and Environment Research Vol.40 No.5
The purpose of this study is to investigate prior thinking and posterior thinking formation of children and adolescents in sinking objects. The subjects consisted of twenty eight, 9- and 11-year old children and fourteen, 13-year old adolescents selected from one elementary school and two middle schools. The transcripts were analyzed to classify children and adolescents' prior thinking and posterior thinking frequency, reasoning response(evidence based response, idea based response) and reasoning method(valid method, invalid method). The data were analyzed by frequency, percentile, mean and standard deviation, t test, ANOVA. Major findings were as followings: 1. Children and adolescents have already had prior thinking in sinking objects. 2. Children and adolescents applies their prior thinking to posterior thinking formation process. 3. There were significant differences in children and adolescents' posterior thinking formation process, especially choices in objects and reasoning methods depending on age. 4. There were significant differences in children and adolescents' reasoning response depending on presented evidences types. 5. Through the experimentation, children and adolescents' prior thinking was different from their posterior thinking. There were significant differences in differences between the prior thinking and posterior thinking depending on age.
도시 보행자를 위한 안내 사인시스템 디자인 연구 : 대전 둔산지구 사례를 중심으로 In the case of Taejon Tunsan district
김진용,김희춘,신용순 大田産業大學校 1996 論文集 Vol.3 No.-
This study is a regulation of signage system design development at city, Taejon Tunsan district. And it proposes a typical modeling & general process in the similar sign system development. This study applied vaviable research methods for planned objective. It used bibliography at the conceptwork. And at survey & analysis step, through on-the-spot photographics and observation. As the results, this study can gain unified design achievements for various persons easy to read.
춘천에서 2002년 봄철 황사 발생기간 동안에 채취된 미세분진 중 무기성분의 특성
김희갑,정경미,김동진,이종태 한국환경독성학회 2002 환경독성보건학회지 Vol.17 No.4
Yellow sand(YS) storms were observed about ten times in the Korean peninsula during March and April in 2002. Twenty four hour fine particle(PM_2.5) samples were collected onto the 47 mm Teflun-coated quartz filters over 9 days during and after the events using the MiniVol Portable Air Sampler at a flow rate of 5 liters per minute. The highest PM_2.5 concentration measured during the YS period was 289 μg/m³, which is 13 times higher than the lowest of the values for the samples collected during the non-yellow said period. The filter samples were analyzed for inorganic ions using the IC, AAS and Autoanalyzer, and for metals using the ICPMS. The results showed that the concentrations of some inorganic ions (e.g., Ca^2+ and SO_(4)^2-) and metals (e.g., Fe, Mn) of soil origin were elevated during the yellow sand events.
수용성 절삭유제 내에서 Saccharomyces cerevisiae와 Escherichia coli의 성장에 관한 연구
정광진,최희영,김장규,원성호,김남기 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.2
The water-soluble cutting oil was used in the type of the mixture of additive lubricant, surfactant, etc., as the organic nutrients, with water. Therefore it was easy to be affected by microbials ; they brought the bad odor by putridity, decreased the cutting property, and destroyed the emulsion phase. In the study using cells, Saccharomyces cerevisiae and Escherichia coli, we studied the effect of concentration and dilution ratio on the growth of cells and the cell growth rate, the pH variance and the change of oil's concentration. The results obtained in this experiment were as follows : 1) The result of test dilution ratio (water:oil) vs. cell growth was that by using E. coli, the growth was better in this order in emulsion type (sample 1) 50:1 > 30:1 > 100:1, and in the soluble type (sample 2) the order was 100:1 > 50:1 > 30:1. The effect of the cutting oil's concentration on the Saccaromyces cerevisiae's was less in this order 100:1 < 50:1 < 30:1 ; the maximum growth was occurred at 100:1. 2) In sample 1 by using E, coli, pH range was changed from 9.5 to 8.0 and refractive index(the cutting oil's concentration) was changed from 1.3327 to 1.3318. And in the test using S. cerevisiae, pH range was varied from 9.5 to 6.2 and refractive index was changed from 1.3330 to 1.3310. In sample 2 by using E. coil, pH was changed to 8.9 and refractive index was changed from 1. 3315 to 1.3313 and in that of using S cerevisiae, pH was changed to 8.1 and refractive index was decreased from 1.3355 to 1.3340.
Novosphingobium ginsenosidimutans sp. nov., with the Ability to Convert Ginsenoside
( Jin Kwang Kim ),( Dan He ),( Qing Mei Liu ),( Hye Yoon Park ),( Mi Sun Jung ),( Min Ho Yoon ),( Sun Chang Kim ),( Wan Taek Im ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.4
A Gram-negative, strictly aerobic, non-motile, non-sporeforming, and rod-shaped bacterial strain designated FW-6T was isolated from a freshwater sample and its taxonomic position was investigated by using a polyphasic approach. Strain FW-6T grew optimally at 10-42oC and at pH 7.0 on nutrient and R2A agar. Strain FW-6T displayed β- glucosidase activity that was responsible for its ability to transform ginsenoside Rb1 (one of the dominant active components of ginseng) to Rd. On the basis of 16S rRNA gene sequence similarity, strain FW-6T was shown to belong to the family Sphingomonadaceae and was related to Novosphingobium aromaticivorans DSM 12444T (98.1% sequence similarity) and N. subterraneum IFO 16086T (98.0%). The G+C content of the genomic DNA was 64.4%. The major menaquinone was Q-10 and the major fatty acids were summed feature 7 (comprising C18:1 ω9c/ ω12t/ω7c), summed feature 4 (comprising C16:1 ω7c/iso- C15:0 2OH), C16:0, and C14:0 2OH. DNA and chemotaxonomic data supported the affiliation of strain FW-6T to the genus Novosphingobium. Strain FW-6T could be differentiated genotypically and phenotypically from the recognized species of the genus Novosphingobium. The isolate that has ginsenoside converting ability therefore represents a novel species, for which the name Novosphingobium ginsenosidimutans sp. nov. is proposed, with the type strain FW-6T (= KACC 16615T = JCM 18202T).
Effect of Co and Rh promoter on NOx storage and reduction over Pt/BaO/Al2O3 catalyst
Jin-Gul Kim,He-Min Lee,Min-Ju Lee,Ju-Heon Lee,Jeong-Gon Kim,Ji-Yong Jeon,Soon-Ki Jeong,유승준,김성수 한국공업화학회 2008 Journal of Industrial and Engineering Chemistry Vol.14 No.6
Effect of cobalt and rhodium promoter on NOx storage and reduction (NSR) kinetics was investigated over Pt/BaO/Al2O3. Kinetics of 2% cobalt loading over Pt/BaO/Al2O3 demonstrated highest NOx uptake during lean cycle, while reduction efficiency during rich cycle appeared most poor. In contrast to this, rhodium showed suppressing effect of NOx uptake during lean cycle and demonstrated an enhanced effect for the higher efficiency of NOx reduction during rich cycle. DRIFT study for NOx uptake and regeneration confirmed formation of surface BaNOx from the band at 1300 cm1 and formation of bulk BaNOx from the band at 1330 cm