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This is a research about the energy requirements of building to reduce the green-house gases, and investigates the technique for cutting down the use of power of the cooling and heating circulating water pump in order to analyze the economics at each method. It set up the building for the research about control systems of saving energy which are operating number control and variable speed control, and figured out conformance. The result of research, the operating number control is caused unsuitable situation depending on conditions, however, the variable speed control which uses inverter is able to be applied no matter what conditions it has. So, the variable speed control was evaluated the economic feasibility, as the power usage was converted by electric fee for quantitative estimates about the amount of reduction of the variable speed control. Therefore the research can draw a conclusion that the operating control system might save the electricity over 20% by using the variable speed control system, when it puts on difficult position.
최근 세계적으로 탄소포집 및 저장(CCS, carbon capture and storage)기술에 대한 연구가 많이 수행되고 있다. 이번 연구는 폐시멘트 미분을 이산화탄소를 포집하는 광물탄산화(mineral carbonation)의 효율적인 재료로 활용하기 위한 연구의 일환으로 수행하였다. 0.15 mm 미만으로 체가름된 시멘트 풀(W:C = 6:4)과 200 ㎖ 용액을 포함하는 반응용기에 순도 99%의 CO2 가스를 주입하는 직접수성탄산화 실험을 수행하고, 두 종류 첨가제(NaCl, MgCl2)의 탄산화에의 영향을 분석하였다. 특히, 첨가제의 종류와 pH변화에 따른 탄산화 과정, 생성되는 탄산염광물의 종류와 특성에 대하여 자세히 연구하였다. 직접수성탄산화 실험 결과 pH는 CO2의 주입으로 지속적으로 감소하였다. Ca2+ 이온 농도는 MgCl2가 첨가제로 활용한 경우에는 지속적으로 감소하였지만 MgCl2를 첨가하지 않은 경우에는 감소하다가 pH가 낮아짐에 따라 생성된 탄산염광물의 용해로 다시 증가하는 경향을 보였다. 생성물질에 대한 X-선회절분석 결과, MgCl2를 첨가하지 않은 경우에는 방해석이 우세하게 나타났고, MgCl2를 첨가제로 활용한 경우에는 Mg2+ 이온의 영향으로 아라고나이트가 우세하게 나타났다. 또한 pH 단계별 직접수성탄산화 실험결과, MgCl2를 첨가하지 않은 경우에는 pH가 높은 실험 초기에 나타난 바테라이트는 pH가 낮아질수록 결정도가 좋은 방해석으로 전환되는 것을 확인하였고, MgCl2를 첨가제로 활용한 경우에는 pH가 낮아질수록 방해석의 함량은 감소하고 아라고나이트의 함량이 증가하는 것을 알 수 있었다. Recently, carbon capture and storage (CCS) techniques have been globally studied. This study was conducted to use waste cement powder as an efficient raw material of mineral carbonation for CO2 sequestration. Direct aqueous carbonation experiment was conducted with injecting pure CO2 gas (99.9%) to a reactor containing 200 ㎖ reacting solution and the pulverized cement paste (W:C = 6:4) having particle size less than 0.15 mm. The effects of two additives (NaCl, MgCl2) in carbonation were analyzed. The characteristics of carbonate minerals and carbonation process according to the type of additives and pH change were carefully evaluated. pH of reacting solution was gradually decreased with injecting CO2 gas. Ca2+ ion concentration in MgCl2 containing solution was continuously decreased. In none MgCl2 solution, however, Ca2+ ion concentration was increased again as pH decreased. This is probably due to the dissolution of newly formed carbonate mineral in low pH solution. XRD analysis indicates that calcite is dominant carbonate mineral in none MgCl2 solution whereas aragonite is dominant in MgCl2 containing solution. Unstable vaterite formed in early stage of experiment was transformed to well crystallized calcite with decreasing pH in the absence of MgCl2 additives. In the presence of MgCl2 additives, the content of aragonite was increased with decreasing pH whereas the content of calite was decreased.
이진현 ( Jin Hyun Lee ), 조동찬 ( Dong Chan Jo ), 김창곤 ( Chang Gon Kim ), 문수정 ( Su Jeong Moon ), 박태용 ( Tae Yong Park ), 고연석 ( Youn Suk Ko ), 이수경 ( Su Kyung Lee ), 송용선 ( Yung Sun Song ), 이정한 ( Jung Han Lee ) 한방재활의학과학회 2013 한방재활의학과학회지 Vol.23 No.2
Objectives : The aim of this study was to investigate the characteristic of low back pain(LBP) and lumbosacral-pelvic alignments, and the relationship between them, depending on the presence and the duration of LBP. Methods : Ninety six patients were classified into the no LBP group(n=31), the acute LBP group(n=33) and the chronic LBP group(n=32), based on the presence and duration of LBP. In each group, lumbosacral-pelvic indicators were measured. The data were analysed by one way analysis of variance(ANOVA) and pearson correlation. Results : 1. The chronic LBP group showed the lower mean value in Ferguson angle, Lumbar lordosis angle, Pelvic Incidence and difference between left and right iliac height, being compared to acute LBP group.2. There was not significant correlation between lumbosacral-pelvic alignments and LBP in every group.3. A positive correlation was found among period of LBP and visual analogue scale(VAS), Oswestry disability index(ODI). Conclusions : For presence and duration of LBP, there were different characteristic values in descriptive statistics. And period of LBP is the most important factor for the degree of LBP. These results show that the lumbosacral-pelvic alignments and LBP have distinctive relationships depending on the duration of LBP.
이동 통신 네트워크 기술의 발달로 이동 단말기를 이용한 다양한 기능과 응용서비스가 가능해지는 반면에 이동 단말기의 하드웨어, 소프트웨어는 점점 복잡 해져 빈번한 오류를 발생되고 있다. 최근 사용자뿐 만 아니라 이동통신 사업자 및 제조사들도 이동단말기의 관리 필요성을 인식하고 있다. 이동 단말 서비스 표준을 제정하는 OMA(Open Mobile Alliance) 표준화 단체에서 이동 단말을 관리하기 위한 DM(Device Management) 표준을 제정 하였다. 본 논문에서는 OMA DM 표준에서 제시한 SyncML Protocol 를 기반으로 이동 단말기를 관리하는 이동 단말 관리 서버 구현 및 설계 내용과 결과를 제시한다.
이진현 ( Jin Hyun Lee ), 조동찬 ( Dong Chan Jo ), 김창곤 ( Chang Gon Kim ), 문수정 ( Su Jeong Moon ), 박태용 ( Tae Yong Park ), 고연석 ( Youn Suk Ko ), 송용선 ( Yung Sun Song ), 이정한 ( Jung Han Lee ) 한방재활의학과학회 2013 한방재활의학과학회지 Vol.23 No.3
ObjectivesThe purpose of this study was to investigate the effectiveness of the Gongjin-dan (Gongchen-dan, here in after GJD) in order to obtain the evidence for clinical application. MethodsThe GJD-related articles published from 1990 to 2013 were searched using “Korean Traditional Knowledge Portal”, “Oriental Medicine Advanced Searching Integrated System (OASIS)”, “Korean Association of Medical Journal Edition (Koreamed)”, “Research Information Services (RISS4U)”, “Korean Medicine Database (KMbase)”, “National Discovery for Science Leader (NDSL)”, “PubMed”, “China National Knowledge Infrastructure (CNKI)”. The search keywords were “Gongjin-dan”, “Gongchen-dan”. Thirty-nine articles were obtained. After excluding the eighteen article which did not meet inclusion criteria, finally twenty-one articles were included; five clinical articles and sixteen experimental articles. ResultsIn clinical studies, GJD has the various effectiveness in cardiovascular diseases, alcoholic hepatitis, mild dementia, anemia. Also experimental studies related to the GJD show a variety of effects, such as anti-oxidative activity, neuroprotective activity, hepatoprotective activity, anti-inflammatory activity, immunological activity, reproductive recovery activity with fewer side-effects. ConclusionsIt has been suggested that there are various effects of GJD in treating a wide-range disease. However, in order to put GJD to use for many kinds of diseases in more reasonable ways, it is needed to publish well-design clinical trial based on the variety of results of experimental studies. (J Korean Med Rehab 2013;23(3):69-78)
이진현 ( Jin Hyun Lee ), 조동찬 ( Dong Chan Jo ), 문수정 ( Su Jeong Moon ), 공재철 ( Jae Cheol Kong ), 박태용 ( Tae Yong Park ), 고연석 ( Youn Suk Ko ), 송용선 ( Young Sun Song ), 이정한 ( Jung Han Lee ) 한방재활의학과학회 2012 한방재활의학과학회지 Vol.22 No.3
Objectives :The purpose of this review is to investigate clinical studies of Hominis placenta pharmacopuncture and to find out the effectiveness of Hominis placenta pharmacopuncture in order to suggest a better research method in the future. Methods :We retrieved numbers of clinical studies about Hominis placenta pharmacopuncture from 7 Korean web databases, using key words such as ‘Hominis Placenta`, ‘Hominis Placenta AND Pharmacopuncture`. This study had been conducted from 1st February 2012 to 30th April 2012. Controlled studies and case studies were only used for this study. Clinical studies that we picked from the databases were classified according to the diseases that those studies are about, and from these clinical studies, we are to research what has to be improved generally in clinical researches. Results :21 case studies, 12 controlled studies had been under research. Hominis placenta pharmacopuncture has a therapeutic effect in various diseases ranging from dermatological disorders, neurological disorders, gynecological disorders, male reproductive disorders, musculoskeletal disorders, respiratory disorders, psychiatric disorders including stroke and cancer. However objectivity and reliability of the Hominis placenta pharmacopuncture studies still remains controversial. Conclusions :It has been proved that there are various effects of Hominis placenta pharmacopuncture therapy in treating wide-ranging diseases. However, in order to put Hominis placenta pharmacopuncture therapy to use for many kinds of diseases in more reasonable ways, it is essential to build well-designed clinical research tools. In the future, abundunt case studies, follow-up trials and RCTs should be done to use Hominis placenta pharmacopuncture for a clinical purpose.