• Title/Summary/Keyword: Advances

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Balancing Benefit-Risk in Drug Evaluation

  • Ahn, Chang H.
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-1
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    • pp.38-39
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    • 2003
  • There have been remarkable medical advances, largely as the result of improved understanding of disease mechanisms and of advances in human genetics at the individual level. Subsequently, remarkable effective medicines continue to be discovered at an increasing rate. Development of these medicines become increasingly complex, accompanied by globalization and global standards, requiring ever higher standards of efficacy, safety and quality. (omitted)

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Recent Advances in Diffractive- and Micro-Optics Technology

  • Morris, G.Michael
    • 한국광학회:학술대회논문집
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    • 한국광학회 2003년도 제14회 정기총회 및 03년 동계학술발표회
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    • pp.4-4
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    • 2003
  • Diffractive- and micro-optics technology Provides new degrees of freedom for the design and optimization of optical systems. In this talk emphasis will be placed on recent advances in the design and fabrication of precision, micro- structured optical elements and their applications in the optical telecommunication, vision-care, illumination and display markets. (omitted)

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저급탄의 열분해 및 촤-$CO_2$ 가스화 반응의 속도론적 연구 (Kinetic Studies of Pyrolysis and Char-$CO_2$ Gasification on Low Rank Coals)

  • 강석환;류재홍;박수남;변용수;서석정;윤용승;이진욱;김용전;김주회;박삼룡
    • Korean Chemical Engineering Research
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    • 제49권1호
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    • pp.114-119
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    • 2011
  • 인도네시아 아역청탄인 ABK탄과 중국 갈탄(lignite)과 같은 저급탄에 대한 열분해와 촤-$CO_2$ 가스화반응에 대한 실험을 비등온의 승온 조건에서 열중량분석기(Thermogravimetric analysis, TGA)를 이용하여 수행하였다. 열분해 속도는 2단계, 1차의 열분해 모델(Kissinger 법의 변형)에 의해 잘 모사되었다. 촤의 $CO_2$ 가스화반응은 수축 핵 모델에 적용하여 초기의 활성화 에너지가 ABK탄은 189.1 kJ/mol, lignite는 260.5 kJ/mol의 값을 얻었으며, 수축 핵 모델에 의해 잘 모사되었다. 특히, 촤의 $CO_2$ 가스화반응에서 활성화 에너지는 무연탄의 결과와 유사하였으며, 다른 모델이나 석탄의 종류에 따라 큰 차이를 보였다.

합성가스로부터 경질탄화수소 및 중산유분을 생산하기 위한 Fischer-Tropsch의 국내연구동향 (A Review of Domestic Research Trends of Fischer-Tropsch for the Production of Light Hydrocarbons and Middle Distillates From Syngas)

  • 김진호;김효식;김지현;류재홍;강석환;박명준
    • Korean Chemical Engineering Research
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    • 제57권4호
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    • pp.565-574
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    • 2019
  • Fischer-Tropsch 합성공정은 합성가스로부터 탄화수소를 합성하는 대표적인 방법이며, 주로 철(Fe)계와 코발트(Co)계 촉매로 알려져 있다. 현재 생성물에 따라 일부 기술(CTL, GTL 등)은 상용 규모로 운전되고 있으나, 경질탄화수소와 중간유분을 직접 생산하는 연구는 아직 상용화되지는 않았다. 그러므로, 본 연구에서는 국내에서 현재까지 경질탄화수소와 중간유분을 직접 생산하기 위한 연구들을 정리하였으며, 촉매의 제조법, 조촉매 첨가, 제올라이트의 조합과 같은 영향이 생성물의 선택도에 미치는 영향을 고찰하였다.

Microalgal Biotechnology: Carotenoid Production by the Green Algae Dunaliella salina

  • Jin, Eon-Seon;Anastasios Melis
    • Biotechnology and Bioprocess Engineering:BBE
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    • 제8권6호
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    • pp.331-337
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    • 2003
  • Unicellular green algae of the genus Dunaliella thrive in extreme environmental conditions such as high salinity, low pH, high irradiance and subzero temperatures. Species of Dunaliella are well known in the alga biotechnological industry and are employed widely for the production of valuable biochemicals, such as carotenoids. Some strains of Dunaliella are cultivated commercially in large outdoor ponds and are harvested to produce dry algal meals, such as polyunsaturated fatty acids and oils for the health food industry, and coloring agents for the food and cosmetic industries. During the past decade, the advances in molecular biology and biochemistry of microalgae, along with the advances in biotechnology of microalgal mass cultivation, enabled this microalga to become a staple of commercial exploitation. In particular, the advent of molecular biology and mutagenesis in Dunaliella has permitted enhancements in the carotenoids content of this green alga, making it more attractive for biotechnological applications. Accordingly, the present review summarizes the recent developments and advances in biotechnology of carotenoid production in Dunaliella.

Global Controversies and Advances in Skin Cancer

  • Baldwin, Louise;Dunn, Jeff
    • Asian Pacific Journal of Cancer Prevention
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    • 제14권4호
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    • pp.2155-2157
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    • 2013
  • Advances and controversies of skin cancer prevention in the Asian-Pacific region are to be examined in the world's first Global Controversies and Advances in Skin Cancer Conference to be held in Brisbane, Australia this November. APOCP Members are cordially invited to register early for the opportunity to contribute to the debate on a cancer which continues to be a prominent issue in the Asia Pacific and indeed worldwide. We need answers to the questions of why a cancer that is so preventable and easily detectable is still shrouded in controversy. Primary focuses will be on issues like viral involvement, vaccines and novel clinical approaches.

Recent advances in microfluidic technologies for biochemistry and molecular biology

  • Cho, Soong-Won;Kang, Dong-Ku;Choo, Jae-Bum;Demllo, Andrew J.;Chang, Soo-Ik
    • BMB Reports
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    • 제44권11호
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    • pp.705-712
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    • 2011
  • Advances in the fields of proteomics and genomics have necessitated the development of high-throughput screening methods (HTS) for the systematic transformation of large amounts of biological/chemical data into an organized database of knowledge. Microfluidic systems are ideally suited for high-throughput biochemical experimentation since they offer high analytical throughput, consume minute quantities of expensive biological reagents, exhibit superior sensitivity and functionality compared to traditional micro-array techniques and can be integrated within complex experimental work flows. A range of basic biochemical and molecular biological operations have been transferred to chip-based microfluidic formats over the last decade, including gene sequencing, emulsion PCR, immunoassays, electrophoresis, cell-based assays, expression cloning and macromolecule blotting. In this review, we highlight some of the recent advances in the application of microfluidics to biochemistry and molecular biology.

RECENT DEVELOPMENTS IN HYDROSYSTEMS

  • Larry-W.Mays
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 1993년도 수공학연구발표회논문집
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    • pp.3-26
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    • 1993
  • I have briefly described some of the important advances in hydrosystems and to remark on the important scientific research priorities in hydrological sciences. We have concentrated on data collection systems, real-time control of hydrosystems, global climate change and decision support systems and GIS. In summary, I would like to stress the following points: - the advances in data collection systems, advanced methodologies for interfacion hydrologic, hydraulic, and optimization models through optimal control approaches; and the advances in decision support systems and GIS will allow the interfacing of all these technologies into some sophisticated and much needed tools for operating hydrosystems; - the ability to better understand the hydrologic processes and their relationships to other earth processes is important to understanding and modelling of the hydrologic cycle and its interactions with the ocean-atmosphere system; - and the solution to a better understanding of hydrologic sciences needs to be an international effort such as the GEWEX program briefly discussed above. I would like to thamk each of you for listening to my lecture and to once again thank those responsible for me being here today. Thank you.

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Hirschsprung's Diease: 수술 후 치료와 문제점 (Postoperative Problems of Hirshsprung's Disease and It's Management)

  • 최승훈
    • Advances in pediatric surgery
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    • 제8권1호
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    • pp.64-67
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    • 2002
  • Since Swenson and Bill established the treatment principles of Hirshsprung's disease in 1948, there have been significant advances in the management of this disease. During the last decade, one-stage correction of Hirshsprung's disease without colostomy and primary laparoscopic pull-through procedure became popular with recent advances in the technology and refinement of the equipments. But the outcomes for Hirshsprung's disease are not always successful, and long-term follow-up isessential. Most children after corrective surgery show significant improvement in respect to fecal continence and constipation, that may not be apparent until late adolescence. The purpose of this study was to review the postoperative problems of Hirschsprung's disease and it's management.

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Recent Advances in Filter Topologies and Realizations for Satellite Communications

  • Fahmi, Mohamed M.;Ruiz-Cruz, Jorge A.;Mansour, Rafaat R.;Zaki, Kawthar A.
    • Journal of Communications and Networks
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    • 제13권6호
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    • pp.625-632
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    • 2011
  • This paper presents an overview of recent advances in radio frequency and microwave filter topologies for satellite communication systems. Many types of filters have been developed during the last years in order to satisfy the demands of modern applications in both terrestrial systems and onboard spacecrafts, leading to a great variety of aspects such as transfer functions, resonator implementations or coupling structures. This paper revisits some of the last advances in this area, including the modeling and full-wave simulation. Some recent designs using dual-mode cavities along with other novel implementations in ridge waveguide will be shown.