• 제목/요약/키워드: Process analytical technology

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공정분석기술: 첨단 분석기술의 새로운 패러다임 (Process analytical technology (PAT): new paradigm for the state-of-the-art analytical technology)

  • 김종윤;박용준;연제원;우영아;김효진;송규석
    • 분석과학
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    • 제21권5호
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    • pp.345-363
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    • 2008
  • 이미 석유화학산업 등 대규모 산업공정에서 널리 활용되고 있는 공정분석화학 및 공정분석기술의 역사는 오래되었지만, 최근 "공정분석기술(Process Analytical Technology: PAT)"의 새로운 개념이 매우 빠르게 일부 산업분야의 생산공정에 보급되고 있다. 본 총설에서는 이미 오래 전부터 대규모 연속식 생산라인에서 널리 활용되어 왔던 공정분석화학 및 공정분석기술의 신개념 첨단 분석기술로서의 태동 배경과 용어 정의 등을 명확히 하였다. 또한, 공정최적화를 위한 공정분석화학 혹은 공정분석기술의 기본개념, 계량화학 등의 공정분석화학 핵심요소, 국내외 산/학/연의 기술 및 활동 현황 등에 관하여 다루었고, PAT에서 주로 활용되고 있는 공정분석기기의 종류와 현황, 그리고 미래 유망기술 및 활용분야에 대해서도 소개하였다.

공정분석기술: 제약산업에서의 기술개발 사례 및 현황 (Process analytical technology (PAT): field applications and current status in pharmaceutical industries)

  • 우영아;김종윤;박용준;연제원;송규석;김효진
    • 분석과학
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    • 제22권1호
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    • pp.35-43
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    • 2009
  • 단순히 완제품만을 평가하는 기존의 방법에서 제조 공정의 보다 깊은 이해와 공정 제어를 통한 품질 확보가 PAT (공정분석기술, process analytical technology)가 지향하고 있는 핵심이다. 생산 상 위험 요소가 많이 발생하는 공정을 제어할 수 있는 목적으로 새로운 실시간 공정 제어 기술을 개발하는 것이 PAT 연구 내용이다. 공정 단계에 대한 이해, 공정에 필요한 여러 가지 변수 및 공정 생산품의 평가 기술은 PAT를 수행하기 위한 기술적 핵심 요소이다. 이에 관련하여 다국적 제약회사의 실제 공정에서의 실시간 품질관리 사례는 상당히 많은 것으로 알려져 있으나, 제조공정 및 분석 기술 자체가 기업 비밀인 경우가 많아 관련 정보는 극히 제한되어 있다. 본 총설을 통하여 실제 제약 산업 현장에서 활용되고 있는 적용사례를 소개하고, 각 제조 공정 및 완제품 실시간 품질 관리를 위한 PAT 연구 사례 및 기술개발 현황에 대하여 언급하고자 한다.

An Analytical Expression for Current Gain of an IGBT

  • Moon, Jin-Woo;Chung, Sang-Koo
    • Journal of Electrical Engineering and Technology
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    • 제4권3호
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    • pp.401-404
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    • 2009
  • A simple analytical expression for a current gain of IGBT is derived in terms of the device parameters as well as a gate length dependent parameter, which allows for the determination of the current components of the device as a function of its gate length. The analytical results are compared with those from simulation results. A good agreement is found.

Selecting optimized mix proportion of bagasse ash blended high performance concrete using analytical hierarchy process (AHP)

  • Praveenkumar, S.;Sankarasubramanian, G.;Sindhu, S.
    • Computers and Concrete
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    • 제23권6호
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    • pp.459-470
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    • 2019
  • Apart from strength properties, durability, toughness and workability are also important criteria in defining the performance of a concrete structure. Hence "High Performance Concrete (HPC)" is introduced. It is different from high strength concrete and can have various applications. In this paper, the properties (Mechanical and Durability) of High Performance Concrete blended with bagasse ash at 5%, 10%, 15% and 20% are studied. However, it is difficult to analyze the performance based on different properties obtained from different experiments. Hence it is necessary to combine all the criteria/properties into a single value to obtain a result by a technique called Analytical Hierarchy Process (AHP).It is an effective tool for dealing with complex decision making, and may aid the decision maker to set priorities and make the best decision. In addition, the AHP incorporates a useful technique for checking the consistency of the decision maker?s evaluations, thus reducing the bias in the decision making process.

계층화 의사결정법을 이용한 방사선방호선택 대안결정에 관한 해석적 방법론 (An Analytical Methodology for Evaluating Radiological Protection Alternatives Using Analytical Hierarchy Process)

  • 사상덕
    • Journal of Radiation Protection and Research
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    • 제19권2호
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    • pp.99-107
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    • 1994
  • 방사선방호의 최적화 검토에 대하여 계층화 의사결정법에 의한 의사결정과정의 예시적 방법론이 제시되었다. ICRP Publ. 55의 우라늄 광산 환기시스템 결정 사례의 방호데이터를 이용하여 주어진 방호선택대안 가운데 최적안을 도출하는 과정을 나타내었다. 이 AHP 방법은 방사선방호의 최적안 결정에 있어 방사선방호 관리자 또는 의사 결정자가 이해하기 쉽고 간편한 방법으로 판단된다.

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의약품 제조공정에서의 전사적 품질혁신을 위한 공정분석기술 개발 (Development of Process Analytical Technology (PAT) for Total Quality Innovation on Pharmaceutical Processes)

  • 신상문;박경진;최용선;이상길;최광진;권병수
    • Journal of Pharmaceutical Investigation
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    • 제37권6호
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    • pp.329-338
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    • 2007
  • The quality assurance issue of drug products is more important than the general product because it is highly related to the human health and life. In this reason, the regulatory guide lines have continuously been intensified all around the world. In order to achieve effective quality assurance and real-time product release (RTPR) of drug products, process analytical technology (PAT), which can analyze and control a manufacturing process, has been proposed from the United States. With the PAT process, we can obtain significant process features of materials, quality characteristics and product capabilities from a raw material to the final product in the real-time procedure. PAT can also be utilized to process validation using information system that can analyze the risk of drug products through out an entire product life-cycle. In this paper, we first offered a new concept for the off-line process design methods to prepare the improved quality assurance restrictions and a real-time control method by establishing an information system. We also introduced an automatic inspection system by obtaining surrogate variables based on drug product formulations. Finally, we proposed an advanced PAT concept using validation and feedback principles through out the entire life-cycle of drug product manufacturing processes.

Experience of Theory and Practice of the Process of Implementing Information Technologies in the Educational Environment

  • Melnyk, Yaroslav;Drapak, Halyna;Sverdlyk, Zoriana;Tsilyna, Maryna;Varenko, Volodymyr;Boichuk, Nelia
    • International Journal of Computer Science & Network Security
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    • 제21권4호
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    • pp.75-79
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    • 2021
  • The article covered theoretical aspects use of information and communication technologies in teaching. Information and communication technologies are technologies that allow you to search, process and assimilate information from various sources, including the Internet. This is the presentation of information in electronic form, its processing and storage, the use of the computer, a variety of programs. The use of information and communication technologies in the work of a student gives an increase in motivation for learning; increased cognitive interest; evaluate their learning activities, identify the problems of their own educational activities; the formation of cognitive independence of students.

A Sufficient Condition for the Independence of Non-Stationary Demand Process and Inventory Position Process under < Q, r > Systems

  • Sung, C.S.
    • 대한산업공학회지
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    • 제8권1호
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    • pp.22-28
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    • 1982
  • Under a continuous-review inventory system, the inventory position process was proved to be asymptotically independent of the general renewal demand processes, when the two processes form an asymptotic unimodel joint distribution. The analytical technique implemented through this work seems to be more like general, and so the periodic-review system can be similarly investigated. In conclusion, the results may be evaluated to direct to the analytical analyses of some inventory systems which have been treated under some restrictions on demand processes.

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