• Asian Pacific Journal of Cancer Prevention
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• 제16권16호
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• pp.7201-7204
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• 2015

Background: This analysis was conducted to evaluate the efficacy and safety of Trans-arterial Chemo-Embolization (TACE) in treating Elderly patients with Hepatocellular Carcinoma (EHPC). Methods: Clinical studies evaluating the efficacy and safety of TACE on response and safety for patients with EHPC were identified by using a predefined search strategy. Pooled response rate of treatment were calculated. Results: In TACE based regimen, clinical studies which including patients with EHPC were considered eligible for the evaluation of response. And, in these TACE based treatments, pooled analysis suggested that, in all 288 patients whose response could be assessed, the pooled reponse rate was 29.5%(85/288) in TACE based treatment. The most commonly encountered TACE-related morbidity was liver function impairment. No grade III or IV renal or liver toxicity were observed. No treatment related death occurred in EHPC patients with TACE based treatments. Conclusion: This evidence based analysis suggests that TACE based treatments are associated with mild response rate and accepted toxicities for treating patients with EHPC.

• 한국분무공학회지
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• 제4권2호
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• pp.19-32
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• 1999

The present study investigated the forms and behaviors of fuel during intake and compression process, and the initial flame stability in a lean burn engine modified as a single cylinder engine equipped with quartz windows for visualization. PLIF(Planar Laser Induced Fluorescence) method with KrF Excimer laser was used for measuring the fuel distributions. The principal design concept of the lean burn nin in this study is the axial stratification in the fuel distribution via fuel injection during intake process and different shapes of intake ports; helical and straight. The experiments showed that fuel flowed in as a vapor state in the early part of intake process and lots of this mixture mated down along the intake valve side cylinder wall, but in the latter part, a lot of fuel flowed in as a liquid state and this fuel stayed in the upper part of cylinder, after that the dense fuel cloud moved upward in the early of part compression process. It became clear that the fuel flowed in via straight port had a important role in the axial fuel stratification.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.734-738
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• 2002

We present spectral characteristics of tidal flat sediments and algal mat that were tested in the Gomso and Saemangum tidal flats, Korea. The objective of this study is to investigate the spectral reflectance and the radar scattering modeling in the tidal flats. Ground truth data obtained in the tidal flats include grain size, soil moisture content and its variation with time, surface roughness, chlorophyll, ground leveling, and field spectral reflectance measurement. The concept of an effective exposed area (EEA) is introduced to accommodate the effect of remnant surface water, and it seriously affects the reflection of short wavelength infrared and microwave. The nin size of 0.0625 mm has been normally used as a critical size of mud and sand discrimination. But we propose here that 0.25 mm is more practical grain size criterion to discriminate by remote sensing. Algal mat is the primary product in tidal flats, and it is found to be very important to understand spectral characteristics for tidal flat remote sensing. We have also conducted radar scattering modeling, and showed L-band HV-polarization would be the most effective combination.

• Journal of Nutrition and Health
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• 제23권2호
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• pp.93-107
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• 1990

The purposes of this investigation were to determine the validity of various methods (available anthropometric equations and near-infrared light interactance) for estimating body fat and to develop multiple regression equations for the prediction of body fat. Thirty-eight healthy males(age: 20.87$\pm$7.17 yrs) and 12 females(19.58$\pm$2.19 yrs) underwent hydrostatic weighing to determine body fat. Anthropometric measurements were taken of height, weight, nin skinfolds and thirteen circumferences. The results obtained are summarized as follows: 1) Relative body fat determined by underwater weighing was 12.08$\pm$5.21% for the males and 17.97$\pm$5.75% for the females. 2) Circumference and skin fold that had the highest correlation with the body fat were waist girth in males and females(r=0.60, r=0.96, respectively), and subscapular in males(r=0.68) and triceps in females(r=0.96). 3) Corss-validation of 18 selected equations on males revealed total errors ranging from 3.76% to 5.06%. Among these equations, M3(Pollock et al.) demonstrated the least total error. Total error of estimation by near-infrared(NIR) was less than that of available anthropometric measurement equations. The results of the cross-validation of 12 equations on females revealed that F3(Sloan et al.) was clearly superior in accuracy of prediction. 4) Correlational analyses showed that estimation of body fat by NIR measurement seemed to be more closely associated with body fat determined by underwater weighing in women than men, in older subjects than younger ones, and in fatter subjects than leaner ones.

• Journal of Plant Biology
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• 제20권2호
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• pp.63-69
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• 1977

Experiments were conducted to investigate the effects of several hormones on the growth of suspension culture of carrot (Daucus carota L.) cells, where changes in pH and the amount of $NH_4-Nin$ the medium were observed with regard to growth. A treatment with 2,4-D at $10^{-5}M$ resulted in a highest rate of growth; the hormone at this concentration caused an increase in dry weight by about 40 to 50% over the control, measured at a stationary phase. It was thus indicated that 2,4-D at $10^{-5}M$ provided the optimal condition for the suspension culture. Changes in pH of the medium were found to be affected by hormonal treatments during the first 2-3 days following the inoculation, after which the pattern of pH changes in hormone enriched media paralleled that of the control. Subsequent changes of $NH_4-N and NO_3-N$ from the medium by the cells, and also by growth of the cells. The uptake of $NH_4-N$ by the cells did not appear to be influenced by hormonal treatments. At a stationary phase, a considerable amout of $NO_3-N$ played a more important role than $NH_4-N$ in the growth of the carrot cell suspension culture.

• 한국정보통신학회논문지
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• 제10권5호
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• pp.934-941
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• 2006

모바일 기기의 특성상 기기에 많은 영향을 받기 때문에 모바일 데이터서비스 환경에서의 문제점을 나타내었고, 각 회사별로 각각의 에뮬레이터와 API가 나오게 되었는데 서로 다른 에뮬레이터와 API 때문에 CP 업체쪽에서는 특정회사만을 위한 서비스가 아닌 모든 이동회사에게 서비스를 하기 위해 각각의 에뮬레이터로 개발과 테스트를 하고 있는 문제점 때문에 모바일 컨텐츠 변환시스템의 필요성이 대두되고 있다. 본 논문에서는 모바일 컨텐츠 개발시 서로 다른 컨텐츠를 각 회사별로 맞도록 변환시키는 컨텐츠 변환 시스템을 구현하여 막대한 비용을 절감할 수 있도록 하였고, 또한 모바일 데이터서비스 환경에서 XML 문서를 사용하여 데이터의 상호 처리 능력을 향상시키고, 데이터의 공용성과 프로그램의 유연성을 향상시키는데 필요한 비용과 노력을 훨씬 절감할 수 있도록 하였다.

• 한국방재학회 논문집
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• 제9권2호
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• pp.17-22
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• 2009

사장교 케이블 장력 산정 방법에는 직접적인 방법과 간접적인 방법이 있는데 직접적인 방법은 정확성에 문제가 있을 뿐만 아니라 제한사항도 많다. 따라서 일반적으로 케이블 장력 추정은 간접적인 방법인 고유진동수를 이용하는 진동법을 사용하고 있다. 최근 시공된 사장교의 케이블에 대해 현이론을 이용한 진동법으로 케이블 장력을 산정해 그 결과를 다중진동모드를 이용한 진동법과 비교했다. 그 결과를 요약하면, 현이론 방법의 오차는 7차이하의 진동모드에서는 2%를 초과하지 않았다. 특히, 3차와 4차 진동모드의 오차는 1%를 초과하지 않았다. 그리고 진동모드의 차수가 증가하고 케이블 단면이 클수록 오차는 증가했고, 장력이 크고 케이블 길이가 길수록 오차는 낮아짐을 알 수 있었다. 즉 7차 이하의 진동모드에서 높은 정밀도를 갖는 다는 것을 알 수 있다.

• 한국산업정보학회:학술대회논문집
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• 한국산업정보학회 2002년도 추계공동학술대회
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• pp.350-362
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• 2002

높은 가용성, 확장성, 시스템 성능의 요구를 만족시키기 위해 SAN(Storage Area Network)이 등장했다. SAN을 보다 효과적으로 활용할 수 있도록, 대부분의 SAN 운영체제들은 SAN에 부착된 물리적 저장장치들을 가상적으로 하나의 커다란 볼륨으로 보이게 하는 저장장치 가상화 개념을 지원한다. 저장장치 가상화의 핵심적인 역할을 하는 것이 바로 논리볼륨 관리자이다. 논리볼륨 관리자는 논리 주소를 물리 주소로 매핑 시킴으로서 저장장치 가상화를 실현한다. 이 논문에서는 논리볼륨 관리자를 위한 효율적이고 유연한 매핑 기법을 설계하고 구현한다. 이 논문의 매핑 기법은 특정 시점의 볼륨이미지를 유지할 수 있는 스냅 샷과 시스템을 정지시키지 않고 SAN에 디스크를 추가 또는 삭제할 수 있는 온라인 재구성 기능을 지원한다.

• 미생물학회지
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• 제36권3호
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• pp.187-191
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• 2000

장티푸스는 Salmonella typhi 에 의해 유발되는 장감염성 질환으로 사람과 동물에 공통되는 질병이다. 본 연구에서는 기 보고된Salmonella typhi KNH100의 염색체 DNA로부 터 방향족 아미노산의 생합성에 관여하는 효소인 3-dehydroquinate hydratase(3- dehydroquinate)를 암호화하는 aroD 유전자를 포함하는 약 3.2 kb의 Sal I 절편을 pSAL62 이라 명명하였다. 클로닝된 재조합 plasmid인 pSAL61에는 ATG 개시코돈과 TGA 종결코돈 을 포함하는 759 염기로 구성된 aroD 유전자가 위치하고 있었다. 또한 S. typhi Ty2, Shigella dysenteriae, 그리고 Escherichia coli 등 다른 장내 세균의 aroD 유전자와 상동성을 비교하여 본 결과 각각 90%, 72.7% 그리고 73%의 상동성을 나타내었다.

• 한국기후변화학회지
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• 제6권4호
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• pp.389-397
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• 2015

The changes in the teleconnection associated with El Nin?o-Southern Oscillation (ENSO) over the East Asia and North Pacific under greenhouse warming are analyzed herein by comparing the Historical run (1970/1971~1999/2000) and the Representative Concentration Pathway (RCP) 4.5 run with 31 climate models, participated in the Coupled Model Intercomparison Project Phase 5 (CMIP5). It is found that CMIP5 models have diverse systematic errors in simulating the ENSO teleconnection pattern from model to model. Therefore, we select 21 models based on the models' performance in simulating teleconnection pattern in the present climate. It is shown that CMIP5 models tend to project an overall weaker teleconnection pattern associated with ENSO over East Asia in the future climate than that in the present climate. It can be also noted that the cyclonic flow over the North Pacific is weakened and shifted eastward. However, uncertainties for the ENSO teleconnection changes still exist, suggesting that much consistent agreements on this future teleconnections associated with ENSO should be taken in a further study.