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소뇌경색(小腦梗塞)으로 인한 진전환자(振顫患者)의 치험(治驗) 1례(例)
황진우,강래엽,심효주,나유진,김병철,송수철,이원희,김진원,서호석,김용호,Hwang, Jin-Woo,Kang, Rae-Yeop,Shim, Hyo-Ju,Na, Yu-Jin,Kim, Byung-Chul,Song, Soo-Cheol,Lee, Won-Hui,Kim, Jin-Won,Seo, Ho-Seok,Kim, Yong-Ho 대한한방내과학회 2007 大韓韓方內科學會誌 Vol.28 No.4
Tremor is a rhythmic, involuntary muscular contraction characterized by oscillations of a part of the body and is the most common movement disorder. Clinically, tremor isclassified into postural tremor, resting tremor, action tremor, or other kinds of tremor, and treated according to the causes. The appropriate treatment of tremor depends on accurate diagnosis of its cause. We have recently examined a number of tremor-patients diagnosed as cerebellar infarction. Based on traditional Korean medicine curative way, we diagnosed this patient as deficiency of Qi and blood(氣血兩虛). On this account, suitable treatment had been provided. Our results show the clinical symptoms had improved through treatment with herbal medicine (Palmultang-gamibang) and acupuncture, so we report it for better treatment.
수종 지혈 한약물이 Cytochrome P450 3A4 활성에 미치는 영향
황진우,고재언,고호연,최유경,박종형,전찬용,Hwang, Jin-Woo,Go, Jae-Eon,Go, Ho-Yeon,Choi, You-Kyung,Park, Jong-Hyung,Jun, Chan-Yong 대한한방내과학회 2008 大韓韓方內科學會誌 Vol.29 No.4
Objects : The aim of this study was to investigate the influence of five herbal medicines on cytochrome P450 3A4 drug-metabolizing enzymes in human liver microsomes. Methods : To use human liver microsomes, an extract of five herbal medicines, which are Artemisia princeps Pampan, Sophora jeponica Linne, Panax notoginseng F. H. Chen, Lithospermum Erythrorhizon Sieb., and Cirsium maackii Maxim, which together are called Jihyulyak(止血藥, drugs for arresting bleeding, hemostatics), was co-incubated and measured for relative enzyme activity in incubation condition compared to ketoconazole, a representative inhibitor of CYP 3A4. Results : We showed that all five of the traditional herbal medicines had no inhibition effect of CYP 3A4 at 10, 20, 30, 40, and $50{\mu}g/ml$ doses in human liver microsomes, although Sophora japonica Linne(SJL) showed a little inhibition at about 81% inhibition rate of control. However, this result is not enough to prove that SJL has a CYP 3A4 inhibition effect. Moreover, we can't make sure that those rates had significant induction effect on CYP 3A4. Conclusions : The result of this study could support that those herbal medicines are safer than chemical drugs, even if this is the basic step to prove that result.
연속재생 DPF의 재생 성능에 미치는 차량 운행패턴의 영향
황진우(Jin Woo Hwang),이창식(Chang Sik Lee) 대한기계학회 2009 大韓機械學會論文集B Vol.33 No.5
This paper is to investigate the influence of driving patterns of slow and high speed vehicles on the performance of continuously regenerating diesel particulate filter(DPF) system matched with operating conditions in field application. The DPF performance test for field application was carried out for two identical DPFs installed to slow and high speed vehicles. A slow speed vehicle was selected among local buses which have driving patterns to repeat running and stop frequently, while a high speed vehicle was prepared to have long route of high speed over 60km/h like inter-city buses. In this test, the regeneration performance on the DPF of slow speed vehicle deteriorated because of high soot load index(SLI) in spite of same balance point temperature(BPT) distribution for high speed vehicle. The DPF of slow speed vehicle melted in the end because the rapid increase of back pressure caused high temperature over 1200℃ in the ceramic wall of DPF. The PM components like ash collected to the filter in the DPF were analyzed in order to investigate the cause of the defect and provide an operation performance of DPF system. In the result of the analysis, high levels of lubrication oil ash(Ca, Mg, P, Zn) were detected.
GLARE 의 섬유층 배향이 피로층간분리 거동에 미치는 영향
황진우(Jin-Woo Hwang),송삼홍(Sam-Hong Song),김철웅(Cheol-Woong Kim) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
The behavior of fatigue delamination in a GLARE(Glass Fiber Reinforced Metal Laminates) under fatigue loading conditions investigated. The behavior of fatigue delamination was examined basing on investigation of the crack and delamination using a SAM (Scanning Acoustic Microscope). The crack and delamination behavior on the relationship among a-N, SAM images and crack length-delamination length were considered. The test results indicated the features of different fatigue delamination and crack growth according to each fiber orientation angle and also obtained to more increase delamination than crack through the relationship between crack length and delamination length in GLARE.
자연재생식 매연여과장치의 시험방법에 따른 재생특성 연구
황진우(Jin Woo Hwang),박용희(Yong Hee Park),김종춘(Jong Chun Kim),나승우(Seung Woo Rah),이창식(Chang Sik Lee) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
For more exact evaluation of the substantial regeneration performance of the passive DPF system matched well with operating conditions in field application, this work is to investigate the performance of the two DPF system, a CSF(Catalysed Soot Filter) and an oxicat+CSF not only on steady cycle but also on transient cycle of dynamometer test based on real road driving pattern instead of the BPT(Balance Point Temperature) test method. And the emission reduction characteristics of the two DPF system also have been compared with each other on steady cycle. To verify the results from the transient cycle test, field tests has been conducted on two equivalent vehicles of which the operation temperature condition of the exhaust gas was similar to that of the transient cycle. The comparison of test results from the dynamometer and field shows that the transient mode is useful to evaluate the actual regeneration capacity for a DPF system since cycle average temperature is very similar to field driving condition. Also, the exhaust gas temperature is very important factor for the regeneration of continuously regenerating diesel particulate filter.
예혼합 연료 공급 조건에 따른 균일 예혼합 압축착화 엔진의 연소특성
황진우(Jin Woo Hwang),김대식(Dae Sik Kim),이기형(Ki Hyung Lee),이창식(Chang Sik Lee) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_1
A premixed charge compression ignition engine is experimentally investigated for the reduction of exhaust emissions. In this study, gasoline and diesel fuel are applied for premixed fuel and each premixed fuel is injected into the intake manifold 10 form homogeneous pre-mixture in the combustion chamber and then each pre-mixture is ignited by a small amount of diesel fuel directly injected into the cylinder. With two kinds of premixed fuel, NOx and smoke concentration of the exhaust emissions were reduced as compared with the conventional diesel engine, but in the event of diesel fuel for premixed fuel, the rate of smoke reduction was small compared with the case of gasoline as a premixed fuel. HC and CO emissions were increased at high premixed ratio in two premixed fuels. The combustion characteristics of premixed charged diesel engine such as the power output, the rate of heat release, and other characteristics are discussed.
황진우(Jin Woo Hwang),김예은(Ye Eun Kim),손용기(Yong Gy Son),이동섭(Dong Seop Lee),류정호(Jung Ho You),김종춘(Jong Choon Kim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Diesel oxidation catalysts(DOC) promote chemical oxidation of CO and HC as well as the SOF portion of diesel particulates. In the Midium-Duty diesel area, the DOC has been widely applied in the retrofit market. As the special act for the improvement of air quality in the capital area, the retrofit program for DOC has progressed favorably and there are currently over 90,000 of these DOC installed to in-use vehicle for retrofit applications in Korea. A DOC is a flow through device that consists of a canister containing a honeycomb-like structure or substrate. The substrate has a large surface area that is coated with an active catalyst layer. To verify the In-Use performance of DOC during warranty period, DOC equipped vehicles are randomly selected and taken away from the vehicle. The selected DOCs are tested on a standard test vehicle to be representative of the group on vehicle application which verification is sought. In this verification test, the PM reduction rate of DOC and the deviation of the performance was examined and also the test result for specific DOC was analyzed. Some DOCs failed to pass the criteria of the PM reduction rate.