• 제목/요약/키워드: Solution processed

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노즐 인쇄기법을 이용한 유기 잉크 용액 공정 연구 (A Study on Solution Processed Organic Ink by Nozzle Printing Technique)

  • 김명기;이정민;성덕형;김주태;강경태
    • 대한기계학회논문집 C: 기술과 교육
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    • 제1권2호
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    • pp.187-192
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    • 2013
  • 노즐을 이용한 인쇄 기법은 주로 전자 소자의 봉지를 위한 접착제의 인쇄분야에 적용되어 왔다. 노즐 인쇄를 통한 기능성 물질의 필름 형성은 커다란 도전이 될 수 있다. 본 논문에서는 노즐을 이용한 유기 잉크의 인쇄 특성을 실험을 통하여 알아보았다. 본 연구의 노즐 인쇄 실험에서 패턴을 형성하기 위한 잉크는 유기 발광 물질인 TAPC를 사용하였다. 인쇄된 패턴 폭은 잉크 공급 유량의 증가와 기판의 온도의 상승에 따라 증가하였다. 또한 인쇄된 패턴은 건조 후 커피링 형상을 나타내었다.

Relevance of metal based Ayurvedic formulations in the management of recurrent acute/ chronic pancreatitis

  • Prakash, Vaidya Balendu;Prakash, Vaidya Shikha;Sharma, Shakshi;Tiwari, Sneha
    • 셀메드
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    • 제7권2호
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    • pp.9.1-9.6
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    • 2017
  • Recurrent Acute Pancreatitis/ Chronic Pancreatitis (RAP/ CP) is generally marked by sudden onset of symptoms like severe abdominal pain, vomiting and weight loss that needs emergency hospitalization. Owing to irreversible and progressive nature of the disease and limitations of conventional treatment, many patients look for an alternative solution. Here, we report data of 250 well diagnosed cases of acute recurring/ chronic pancreatitis, enrolled in between January 1997 to August 2016, in our Ayurvedic clinical practice in Northern part of India. Ayurveda is well recognized as an independent medical system parallel to conventional medicines in India and a subject is free to opt for any system of medicine for the prevention and treatment of any ailment. The subjects were treated with a complex herbo-mineral formulation based on the principles of Rasa Shastra in Ayurveda that deals with the therapeutics of processed metals in the prevention and treatment of diseases. They were also prescribed a regulated balanced diet and lifestyle. Significant improvement has been noted in subjects who have completed the treatment.

바이오미미크리 특성이 적용된 신재료 가공방법 연구 (A Study on Processing Methods of New Materials Applied to Biomimicry Characteristics)

  • 지주연;서지은
    • 한국실내디자인학회논문집
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    • 제22권5호
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    • pp.367-375
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    • 2013
  • Using the 'New material' concept has recently been introduced into the natural characteristics. In the course of such a, Janine M. Benyus has proposed to mimic the characteristics of natural ecosystems to mention the concept of Biomimicry. Process made engineered using technical elements for representing the material properties of Biomimicry such will be acting importantly, This study intends to analyze how new materials applied to 'Biomimicry' characteristics are processed in space. The results were as follows : 1) Processing methods of new materials resulted as 'Forming', 'Surface treatment', 'Bonding', 'Inserting'. These four were divided and analyzed into 'Form', 'System', 'Adaptation'. As a result of this analysis, such significances were shown as 'Forming/Surface treatment/Bonding' in 'Form', 'Bonding' in 'System' and 'Adaptation'. 2) 'Bonding' applied to 'System' of new material can be recycled to be combined with other materials through the existing adhesive material, and present as a solution of 'Sustainable development'. 3) 'Bonding' applied to 'Adaptation' of new material is to impart the ability to react to the environment through the joint, but is characteristic, at this time, using digital and other field technology. It appeared primarily that it can be known to meet the social trends and convergence between fields. Thus, as the finish that are friendly to the environment from the interior design, the results of the study are expected to be utilized in the study of new materials guidelines.

DNA 컴퓨팅을 이용한 원숭이와 바나나 문제 해결 (Solving the Monkey and Banana Problem Using DNA Computing)

  • 박의준;이인희;장병탁
    • 인지과학
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    • 제14권2호
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    • pp.15-25
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    • 2003
  • 원숭이와 바나나 문제는 인공지능과 관련된 여러 문헌에서 문제 해결(problem solving) 과정을 설명하는 예제로 자주 등장한다. 그러나 이 문제에 대한 전통적인 접근 방식은 추론을 수행함에 있어 절차적(procedural) 관점의 도입을 필요로 하며, 이는 복잡한 문제 해결에 제약 조건으로 작용한다. 그러나 대규모 병렬 처리가 가능한 DNA 컴퓨팅 기법을 이용하면서, AI 본연의 의미를 퇴색시키지 않고서도 이 문제를 효과적으로 해결할 수 있다. 본 논문에서는 DNA 분자를 사용해서 원숭이와 바나나 문제를 표현하는 방법을 설계한 후, 컴퓨터 시뮬레이션을 통해 다양한 해들(solutions)이 생성됨을 확인하였다. 전통적인 방법으로 구현된 Prolog 프로그램이 단 하나의 최적해밖에 제공해 주지 못한다는 사실과 비교해 볼 때, 이것은 확실히 흥미로운 결과이다.

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Analysis and Strategy of Economic Development Policy for SMEs in Indonesia

  • DAHLIAH, Dahliah;KURNIAWAN, Agus;PUTRA, Aditya Halim Perdana Kusuma
    • The Journal of Asian Finance, Economics and Business
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    • 제7권5호
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    • pp.103-110
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    • 2020
  • This study analyzes the strategy of determining economic development planning on SME improvement in Indonesia. A qualitative approach was conducted through interview questionnaires with twenty respondents, including sixteen Regional Apparatus Work Unit, Fisheries and Marine Office lecturers, subdistrict heads, and development observers. The method used is Analytical Hierarchy Process (AHP). AHP prioritizes criteria and sub-criteria to increase economic growth, reduce poverty, and increase community participation, while indicating the sub-criteria to optimize resource potential, strengthen micro-economy, develop tourism potential, utilize fishery potential and cultivation, and improve institutional performance. The AHP weighting results based on competitiveness and regional development of Bantaeng Regency is the priority in policy-making for a solution. The research shows that the government strategy, based on the perception of the stakeholders, is: optimizing resources strategy with priority to maximize the resource-carrying capacity that includes agriculture and farm, tourism development potential strategy, self-reliance of community groups and coaching and management. Strategies to strengthen micro economy include: industrial control, SMEs, community cooperatives and infrastructure improvements, strategies to improve institutional performance work capacity and work ethic, and strategies to utilize fisheries and cultivation potential technological development, provision of processed industries of fishery products, and improvement of the quality of the environment.

Laccase를 이용한 데님 탈색 (Denim Decolorization Using Laccase)

  • 정유라;송화순
    • 한국의류학회지
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    • 제37권3호
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    • pp.348-356
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    • 2013
  • Denim washing is processed with different washing techniques such as stone washing, chemical washing, sand washing, and bio washing. Cellulase bio washing can meet environmental regulations that enhance and rectify problems associated with traditional decolorization techniques; however, stone washing needs to be added to the processing because it produces a low decolorization effect. There is also the problem of additional strength reduction. To prevent these problems, a new enzyme for bio washing is required. This study examines the optimum laccase treatment conditions on denim and evaluated the characteristics of laccase-treated denims to establish a database of eco-friendly new decolorization process on denim using a new laccase enzyme. The results show that the optimum conditions of laccase on denim are a pH of 4.0, $30^{\circ}C$, 7% (o.w.f.), and 6 hours in 10 mM of buffer concentration. UV absorbance and HPLC identified isatin coexist with anthranilic acid in solution after laccase treatment on denim. Results of the surface color, the surface morphology and the tensile strength indicate that laccase treatment shows an excellent decolorization effect without fiber damage. The wet cleaning fastness and the perspiration fastness also improved.

수열합성중 계면활성제를 이용한 ZnO 나노구조 형상 제어 (Morphology Control of ZnO Nanostructures by Surfactants During Hydrothermal Growth)

  • 박일규
    • 한국분말재료학회지
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    • 제23권4호
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    • pp.270-275
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    • 2016
  • We report on an all-solution-processed hydrothermal method to control the morphology of ZnO nanostructures on Si substrates from three-dimensional hemispherical structures to two-dimensional thin film layers, by controlling the seed layer and the molar contents of surfactants during their primary growth. The size and the density of the seed layer, which is composed of ZnO nanodots, change with variation in the solute concentration. The ZnO nanodots act as heterogeneous nucleation sites for the main ZnO nanostructures. When the seed layer concentration is increased, the ZnO nanostructures change from a hemispherical shape to a thin film structure, formed by densely packed ZnO hemispheres. In addition, the morphology of the ZnO layer is systematically controlled by using trisodium citrate, which acts as a surfactant to enhance the lateral growth of ZnO crystals rather than a preferential one-dimensional growth along the c-direction. X-ray diffraction and energy dispersive X-ray spectroscopy results reveal that the ZnO structure is wurtzite and did not incorporate any impurities from the surfactants used in this study.

Aerial Triangulation with 3D Linear Features and Arc-Length Parameterization

  • Lee, Won-Hee
    • 대한공간정보학회지
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    • 제17권3호
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    • pp.115-120
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    • 2009
  • 기존의 도화사 수작업에 의한 기준점기반 항공삼각측량 기법은 전통적인 사진측량에서 유용하게 이용되어 왔으나, 자동화된 수치사진측량 기법이 확산되면서 기존방법의 문제점이 대두되었다. 따라서 본 논문은 보다 발전된 자동화 기술 개발을 위하여 상위 레벨인 선형객체들을 이용한 항공삼각측량 가능성을 제시하고 검증하고자 하였다. 최근에 발달된 선형 객체 추출기법 알고리즘은 보다 정확한 선형 객체 추출기법을 제공하였지만, 포인트 추출기법에 비하여 추출하기 어려운 단점이 존재한다. 따라서 본 논문은 이를 극복하기 위하여 수동 디지타이징이나 에지 연산자를 통하여 쉽게 획득되는 포인트를 이용하여 상위레벨 선형객체를 생성하고, 이를 통해 지형공간정보 이용 가능성을 높이고자 하였다. 본 연구 결과를 통해 진화하고 있는 컴퓨터 환경에 적합한 선형객체를 이용한 항공삼각측량 기법을 발전시킬 것으로 기대된다.

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Sol-Gel법으로 제조한 (Ba, Sr)$TiO_3$ 박막의 구조 및 유전특성에 관한 연구 (A Study on the Structural and Dielectric Properties of the (Ba, Sr)$TiO_3$ Thin Film by Sol-Gel method)

  • 김경덕;류기원;배선기;이영희
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1997년도 하계학술대회 논문집 C
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    • pp.1491-1493
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    • 1997
  • In this study, Sol-Gel derived $Ba_{0.7}Sr_{0.3}TiO_3$ (BST(70/30)) thin films were investigated. The stock solution of BST were fabricated and spin-coated on the Pt/Ti/$SiO_2$/Si and ITO/glass substrates. The coated specimen were dried at $300^{\circ}C$ and finally annealed at $650{\sim}750^{\circ}C$. To analyse crystallization condition and microstructural morphology for different substrates, XRD, and SEM analysis were processed. In the BST(70/30) composition. dielectric constant and loss characteristics measured at 1kHz were 173, 0.01% for Pt/Ti/$SiO_2$/Si substrates and 181, 0.019% for ITO/glass substrates, respectively.

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남부지역 시설원예산물의 저장성 향상 및 가공품 개발에 관한 연구-시설원예산물의 선도유지를 위한 항균소재의 개발을 중심으로(II)- (Development of Postharvest Technologies to Preserve High Quality of Greenhouse Horticultural Commodities and their Processed Products -Development of Natural Antimicrobial Agents for preserving Greenhouse Fresh Produce(II))

  • 조성환;정순경;김영록
    • 한국식품저장유통학회지
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    • 제7권1호
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    • pp.1-7
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    • 2000
  • To develop natural antimicrobial agents for keeping qualities of postharvested greenhouse produce the antimiocrobial actions of Polygonum cuspidatum Sieb. et Zucc. extract , which showed remarkable antimicrobial effects against microorganism causing the postharvest decay of greenhouse produce, were investigate. In the inhibitory experiment of enzymes related to energy production metabolism hexokinase activities decreased to 73% and 68% by treating with Polygonum cuspidatum Sieb. et.Zucc. extract and Eugenia caryophyllata Thumnberg extract in comparison with control, respectively. Direct visualization of microbial cells by using both transmission electron microscope and scanning electron microscope showed that microbial cell membrane was destroyed by treating with the dilute extract solution. this change of celluloar membrane permeability could be identified in the experiment that 0-nitrophenyl-${\beta}$-D-galactopyrano-side(ONPG), the artificial substrate of ${\beta}$-galactosidase, was hydrolyzed in the presence of the extract, indicating that the membrane was perturbed. The separation and identification of the most antimicrobialo substances isolated from Polygonum cuspidatum Sieb et. Zucc. extract and Eugenia caryophyllata Thunberg extract were carried out by using gas chromatography and mass spectrometry 9GC/MSD), which were identified as eugenol. As a result, the functionality of Polygonum cuspidatum Sieb. et Zucc. extract and Eugenia caryophyllata Thunberg extract as antimicrobial agents for keeping qualities of postharvested greenhouse produce may be recommended.

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