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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.
박 種子油中의 C30Δ5,24-Triterpene Alcohol 및 C29Δ7,22-Sterol의 構造
鄭泰明,安守中,河奉錫 慶尙大學校 1980 論文集 Vol.19 No.1
Two kinds of sterol isolated from unsaponifiables of gourd seed oil were identified, the structure as cucurbitadienol(10α-cucurbita-5.24-dien-3β-o1, C30??5,24-triterpene alcohol) and chondrillasterol[(24R)-24ethy1-5α-cholesta-7, E-22-dien-3β-o1; C29??7,22-setrol], by infrared, mass and proton nuclear magnetic resonance spectrometry using lanthanide shift reagent. The former has not been detected in higher plants so far although the compound has been synthesized from similar compound. The latter is unusual in the plant kingdom and has hitherto been found only in several species of green algae(Chlorophyta).
金正洙,安元燮,李喆浩 진주산업대학교 1980 論文集 Vol.18 No.-
穗肥가 穗首稻熱病 發生에 미치는 影響을 調査하기 위하여 1980年 4月∼10月에 걸쳐서 穗肥時期를 달리하였을 때 水稻의 收量 및 稻熱病發生率을 調査한 結果를 要約하면 다음과 같다. 1. 生穫重은 8월 2일 穗肥區에서 가장 많았고 7月 24日區에서 가장 낮았다. 2. 收量은 穗肥時期에 따라 큰 差異를 보이지 않아 7月 19日∼7月 29日區에서 공히 1474㎏로 같았고 7月 14日區에서 가장 낮았다. 3. 品種間에 있어서 收量이 가장 적은것은 來敬이였으며 가장 收量이 높게 나타난 品種은 密陽 23號였다. 4. 穗首稻熱病發生率은 8月 2日 穗肥區와 7月 29日 穗肥區에서 가장 높아 穗肥時期가 늦어지면 늦어 질수록 稻熱病發生率이 높은 경향을 보였다. This experiment was carried out to obtain the effect or yields and the rate of neck blast desease's appearnce in the 4 varieties of paddy rice applied nitrogen in the different days around the panicle initiation stage, and the results were as follows: 1. The fresh weights of paddy rice was the heaviest at the plot applied nitrogen on Aug 2nd, but that was the lightest in the plot applied nitrogen on July 24th. 2. The yields of paddy rice were not much difference depend on the application days of nitrogen. 3. The variety of Milyang 23 was the highest yield and Lageoung was the lowest yield variety. 4. In the rate of neck blast desease's appearance, the plot applied nitrogen on Aug. 2nd and July 29th were the highest, and the later the nitrogen was applied, the higher the neck blast desease was appeared.
안성수,민혜란,이정기,이준 동신대학교 2005 論文集 Vol.15 No.-
기존의 산업현장에서 적용되고 있는 동작인식 시스템의 취약점, 문제점을 보 완하기 위하여 작업자의 동작을 고정된 CCTV 로 촬영한 영상을 인식의 대상으로 취함으로써 동작 정보를 얻기 위한 각종 장비들을 최소화 시켰다. 본 연구에서는 작업자의 일정한 동작을 보다 효율적으로 인식할 수 있는 시스템을 제안 한다. 먼저, 작업자의 동작을 촬영한 동영상에서 연속된 프레임간의 차를 기반으로, 고정된 배경과 움직이는 대상을 분리한다. 에지 검출을 이용하여 동작의 중심 위치를 추정하여 연속적으로 움직이는 동작을 인식할 수 있도록 하였다. 본 연구에서 설계한 동작 인식시스템은 작업자의 신체 부분별 특성을 추출하기 위한 계산작업에 소요되는 시간을 줄이기 위하여 프레임간의 차연산과 에지검출을 통한 동작인식을 실시하여 인식에 필요한 작업시간을 단축하여, 효율적이면서 비용이 저렴한 동작 인식시스템을 설계하였다.
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.
블럭펄스 함수를 이용한 대규모시스템의 계층별 상태추적에 관한 연구
안비오,임윤식,김정환,안두수 成均館大學校 科學技術硏究所 1996 論文集 Vol.47 No.1
This paper presents a algorithm of hierarchical approach to tracking problems for large-scale systems via Block pulse functions(BPF). In controlling the n-th order large-scale systems for tracking problem, two point boundary value problems(TPBVP) has the 2n-th order. Generally, it is very difficult to obtain the solutions due to its high order. In order to solve the this difficulty, hierarchical approach is proposed. And apply the BPF transformation to the system, we simply obtained the solutions of decomposed control laws from the recursive algebraic equations.
1998-1999년 절기에 부산지역에서 유행한 인플루엔자 바이러스의 분리
정영기,정명주,이주연,안정배,김지희,김만수,조경순 동의대학교 기초과학연구소 2000 基礎科學硏究論文集 Vol.10 No.1
Investigate the epidemics for influenza outbreaks. The outbreak pattern of the internal and external patients housed in the 10 designated hospitals was monitered to investigated and the characteristics of the virus isolates are as follows. 232 strains of influenza virus was isolated from the oral specimen of 1,320 respiratory disease patients in Pusan from Oct. 1998 to Jun. 1999. Among these isolates, 222 strains were A-type and the rest were B-type. The outbreak pattern for sex-and age-group is as follows. The male outbreak was similar to the female outbreak: male outbreak, 47.4% and female outbreak, 52.5%. Most of the patients were less than 10 years old. The monthly influenza outbreak was consistent from Dec. 1998 to Apr. 1999. and The 113 strains from the A-type isolates were A/Sydney/05/97(H3N2)-like, the 109 strains were A/Beijing/262/95(H1N1)-like, and all of the 10 B-type isolates were B/Harbin/07/94-like.
안성수,이준,이정기,박찬모 東新大學校 2003 論文集 Vol.13 No.-
The leading applications in P2P(Peer-to-Peer) file sharing are Napster, Soribada, Gnutella and Kazaa. Napster and the early version of Soribada fall into the category of centralized P2P system in which a central server provides clients with the indices of shared files and clients share those files with the help of searching feature. Previous research on this resulted in Pastry, Freenet, Chord, and CAN. A node is not connected to an arbitrary node, but the structure of network is to be maintained by mapping the node and its target contents in a certain address space. Contents that are mapped in a certain address area calls for a routing only to that specific area which brings forth the advantage of increased search efficiency. Its weak point, though, is the overload in a certain area because the discriminator which is referred to by a content or a P2P client is mapped onto a physical network.