http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)
김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1
In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.
고농도 니켈 침출액으로부터 Na-PC88A에 의한 Co, Mn 및 Zn의 분리에 관한 연구
安鍾寬,朴慶鎬,孫廷秀,안재우 대한금속재료학회 2001 대한금속·재료학회지 Vol.39 No.12
Solvent extraction experiments for the separation of impurities from Ni-rich solution were carried out for manufacturing of high purity Ni compounds from acid leaching solution of spent Ni-Cd secondary battery. Synthesised and actual leaching solution were used as aqueous phases and PC88A saponified by sodium in kerosene were used as organic phases. The extraction order is Zn>Mn>Co>Ni and extraction percentage of metal ions was increased with an increase of the concentration of extractant, initial pH of aqueous phase and ratio of O/A The separation of Ni and other impurities was effectively accomplished at the condition of extraction stage = 1, O/A = 1, saponified percent 50%, initial pH 5.0, concentration of extractant 1.0M.
안재우,전채홍,안종관 대진대학교 1997 大眞論叢 Vol.5 No.-
In the fracture of materials, the art of fractography is well established. However there are few quantitative rules that related the morphology of the fracture surface to the properties of the material, particularly its resistance to fracture, or to the circumstances of the fracture, sudden and catastrophic, or gradual by fatigue, etc. Fractal geometry is used in order to these quantitative relation. Fracture surface is expressed by the fractal. The fractal dimension is related to the special feature of microstructure. And fracture profiles that are generated by midpoint displacement method are in aggrement with the measured profiles.
안재민,유헌우,장동식 한국경영과학회 2002 한국경영과학회 학술대회논문집 Vol.- No.1(1)
In this paper, a new semi-automated cyber character generating method is presented. Local edge detection tools extract face contour from graphic image files. Some graphic manipulation process detailed touch to obtain neat face contour. This method shortens the making process dramatically while maintaining the good quality similar to real face image. Some of the processed images are illustrated for clear explanation.
Ni-Zn-P 및 Fe-Zn-P 3원계 합금도금에 관한 헐셀 실험 연구
안재우,안종관 대진대학교 1995 大眞論叢 Vol.3 No.-
A experimental study on the electrodeposition of Ni-Zn-P and Fe-Zn-P alloy onto a steel has been carried out using a Hull-cell apparatus. The results show that the optinum current efficency of Ni-Zn-P and Fe-Zn-P alloy was 80mA/cm^(2), 120mA/cm^(2) respectively. And the desirable cell distance of Ni-Zn-P and Fe-Zn-P alloy was 6cm, 6.5cm. For the alloying of P, it was obtained that the optimum concentration of NaH_(2)PO_(2) was 20 g/ℓ.
안재욱,安種寬,李晩承 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.1
A study has been made on the recovery of nitric acid and valuable metals such as Cu, Sn and Pb from the spent nitric etching solutions. The nitric acid was extracted effectively by TBP but the heavy metals such as Fe, Cu, Sn and Pb were not extracted by TBP from the spent nitric etching solutions. From the experimental results, 95% of nitric acid in spent etching solution was extracted at O:A ratio of 3:1 in five stages by 60% TBP, and 98% of nitric acid was stripped from the loaded organic phase at O:A ratio of 1:1 in four stages by distilled water. After extraction of nitric acid, Cu was effectively recovered as a metal by electrowinning and Sn was successfully removed by precipitation methode as the form of hydroxide or hydrated oxide by adjusting pH of the raffinate solution. Finally, Pb was recovered by cementation with iron scrap at above 65℃. Parameters controlling the cementation process, such as temperature, pH and the effect of the additives were investigated.
Nickel 및 Cobalt가 함유된 염산용액중에서 Alamine336에 의한 Fe, Mn 및 Zn의 분리
안재우,안종관,박경호,손정수 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.6
The separation and recovery of cobalt and nickel from hydrochloric leaching solutions of manganese nodules were imitated by solvent extraction using Alamine336 in Xylene. The behavior of impurities such as iron, zinc, copper and manganese was also investigated. With the increase of chloride ion concentration, cobalt was selectively extracted from nickel owing to the difference of chlorocomplex in solution and the minimum chloride ion was 5.0M. But in this extraction step, the impurity metals such as copper, iron, manganese, zinc were also co extracted in the organic phase. However, co-extracted metals in the organic phase could be effectively separated in the scrubbing and stripping step. Manganese and nickel were effectively removed in the scrubbing step with 6.0M hydrochloric solutions but copper, iron and zinc were loaded in the organic phase with cobalt. Finally, the metal-bearing organic phase was contacted with the hydrochloric strip solution to recover the loaded cobalt. The impurity metals were effectively removed in this step with controlling the concentration of chloride ions in the strip solution. From the experiment, The behaviors of impurities on each of operation steps in extraction, scrubbing and stripping processes were investigated. Consequently the optimum condition for the separation of cobalt from hydrochloric solution were proposed.
구리, 니켈 및 코발트를 함유한 염산용액으로부터 LIX84에 의한 구리의 용매추출
안종관,안재우,오영주,이만승 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.3
Solvent extraction experiments with LIX84 have been performed to separate copper from synthetic hydrochloric acid solutions containing copper, nickel and cobalt. Experimental conditions such as solution pH, the concentration of chloride ion and LIX84 and manganese ion, the volume ratio of organic to aqueous phase and pH of stripping solution have been investigated. The optimum conditions for the separation of copper from nickel and cobalt were obtained from the experimental results.
안종필,박주원,서재우 朝鮮大學校 建設技術硏究所 2007 建設技術硏究 Vol.27 No.2
Development of design method based on probability theory sublating discrepancy of definitive design standards in designing foundation structure is needed. This study develops uncertainties of resistance and load effect of foundation structures in order to introduce the concept of probabilistic design based on reliability into foundation structures, estimate reliability index suitable to foundation structures, compares and analyzes safety and durability performance and the results of research can be summarized as follows. Optimum safety radio of bearing power of pile foundation was estimated as 2.9613 according to interpretation of reliability and it was analyzed in a rational way compared to uniform safety ratio value based on conventional allowable stress design methods, and as a result of analyzing life cycle cost of foundation structures, it was confirmed that execution of maintenance and management strategy in repair and maintenance condition of safety evaluation grade B was most economical. In addition, prevention LCC/post LCC ratios of foundation structures for life cycle of 80 years were 60.54%, 54.58%, 52.27% and 49.29% at maintenance, repair, reinforcement and replacement respectively and prevention and maintenance strategy was more economical than post maintenance strategy. It is expected that the results of this study will be used as basic materials to build analysis techniques of reliability and economy of foundation structures through expansion of statistical data of foundation structures.
통계적 기법을 이용한 마이크로 스피커 다이아프램의 최적형상설계에 관한 연구
안찬우,홍도관,최재기,박진우 東亞大學校附設 生産技術硏究所 2007 生産技術硏究所硏究論文集 Vol.12 No.-
This study uses response surface methodology to explain correlations between the objective function and design variables, fractional factorial design and central composite design were carried out. The change of shape of diaphragm, thickness of diaphragm and voice coil weight based on fractional factorial design and central composite design are made. Therefore this study carried to decide design variables for minimizing 1st natural frequency and maximizing 2nd natural frequency of diaphragm using response surface methodology and screening(fractional factorial design), we showed improved design variables.