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Sulfurous acid 환원제를 이용한 ICP-AES에 의한 Osmium의 정량분석
김강진,박한석 한국분석과학회 2007 분석과학 Vol.20 No.3
In this study, a convenient, fast and accurate inductively coupled plasma atomic emission spectrometryuse of the reaction of sulfurous acid with osmium to quantitative conversion of volatile Os(VIII) to non-volatileOs(IV) in the pH range 2-10. The response was found to be stabilized immediately after sulfurous acid reactedwith osmium. The precision was calculated to be 0.5-4.5 % (RSD) under various ICP-AES conditions. Thedetection limit was 2.5-57.7 ng/g based on 3σ of the blank response (n=3) using a concentric flow nebulization.
A Retrospective Study of Intervertebral Disk Disease Confirmed by MRI in Dogs: 89 Cases (2012-2015)
김담,강진수,김영웅,이동빈,허수영,김남수 한국임상수의학회 2019 한국임상수의학회지 Vol.36 No.3
Intervertebral disk disease is a common neurological disease in dogs. In veterinary neurology clinics, the incidence of intervertebral disk disease and the spinal cord compression rate of the disk are well documented. However, the direction of herniation of the intervertebral disk is relatively less known on Magnetic resonance imaging (MRI). Therefore, this study systematically investigated and analyzed the intervertebral disk disease in dogs. Especially, classification according to the direction of herniation of the disk, the degree of pre - treatment neurological manifestation, and the compression rate was investigated. In addition, the treatment methods of patients who received treatment after visiting the Chonbuk animal medical center (CAMC) were divided into pharmacological treatment and surgical treatment. The location of intervertebral disc in spinal canal was mainly ventral (69.9%), and when the prognosis was evaluated according to the compression rate of the spinal cord, the prognosis of the surgical treatment (72.7%) was more effective than the non - surgical medication (40.6%). Surgical treatment (83.3%) was more successful than nonsurgical medication (60%), especially in cases of severe spinal cord compression (> 50%). In this study, surgical treatment was more effective when the neurological symptoms were severe or the spinal cord compression rate was high.
김강진(Gang Jin Kim),오인세(In Se Oh),황완균(Wan Kyunn Whang),김일혁(Il Hyuk Kim) 대한약학회 1995 약학회지 Vol.39 No.6
Studies on the pharmaco-constituents from the leaves of Cercis chinensis which have been used for the treatment of inflammation, contusion, dilated blood, pain of heart and stomach, edema, etc. in Korean folk remedies were carried out. Dried leaves of the plant were extracted with MeOH. The MeOH extract was suspended in distilled water and subsequently fractionated with Et2O and n-BuOH. From the Et2O and n-BuOH fractions, six phenolic compounds were isolated and identified as myricitrin(C21H20Ol2, m.p. 199~200o, myricetin-3-O-alpha-L-rhamnopyranoside), kaempferol(C15H10O6, m.p. 276o), quercetin(C15HalOO7, m.p. 313~314o), quercitrin(C21H20O11, m.p. 176~178o, quercetin-3-O-alpha-L-rhamnopyranoside), gallicin(C8H8O5. m.p. 202~203o, methyl gallate), gallic acid(C7H605, m.p. 260~265o) through their physico-chemical data and UV, IR, EI-MS, FAB-MS, 13C-NMR, and 1H-NMR analysis with authentics.
Euro-5 승용 디젤 차량의 고온 실도로 주행 시 규제/미규제 배출가스 및 엔진제어 특성에 관한 연구
김강진(Kangjin Kim),진동영(Dongyoung Jin),명차리(Cha-Lee Myung),박심수(Simsoo Park) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
Recently, regulation for exhaust emissions of vehicles has been stronger. But lots of researches indicated that there is difference in exhaust emission between chassis dynamometer test and real driving test. Especially, diesel engine emits high level of NOx emission compared to gasoline engine and unregulated emissions able to harmful to human body due to its inherent operation principle. In this study, regulated and unregulated emissions from Euro 5 light-duty diesel vehicle during real drive test are analysed and engine control characteristics focussed in exhaust gas recirculation (EGR) are reviewed. Real driving emissions are compared to chassis dynamometer tests and unregulated emissions are quantified to notice how much emissions are emitted under high temperature and air-conditioner on/off condition.