ISSN:0009-286X    

DOI:10.1002/cite.330650702

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractInformation Structures Required for Quality Assurance. An information model „quality”︁ is developed on the basis of an object‐oriented structuring of the production process into the two object classes of „product”︁ and „process element”︁. The pertinent product and process properties are represented as set and actual values in property profiles. Particular attention is paid to the scaling necessary or possible for each value representing a property. The histogram has proved to be an appropriate method of representation. Changes in the product‐describing properties occurring during the production process are shown. The information structure selected permits definition of a quality assurance concept and the information and equipment necessary f

ISSN:0009-286X    

DOI:10.1002/cite.330650703

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractQuality Assurance in Plant Design and Construction. In the field of chemical plant design and construction, quality is understood to mean the strict application of the state‐of‐the‐art rules and the fulfilment of all specific requirements specified by the client, including plant take‐over by the client in accordance with the time schedule. Chemical plants can rarely be handled in the same manner as series products. Therefore, quality assurance requires a large organizational scheme. The definition of quality and the system applied to ensure an adequate quality standard are a rather complicated task. The technical divisions involved in a project are responsible for the quality, i.e. there is no sharing of responsibility. It is also impossible to shift this responsibility to a special QA dep

ISSN:0009-286X    

DOI:10.1002/cite.330650704

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractExpert Systems in Chemical Engineering – Examples in the Configuration of Agitators. The structuring of relevant knowledge and its formalized representation in a knowledge base is the main prerequisite in employing an expert system. The present paper discusses functionality and conception of expert systems and explains their advantages over conventional programming. Furthermore, the structure of an expert system for the configuration of agitators in food processing is presente

ISSN:0009-286X    

DOI:10.1002/cite.330650705

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractThree‐Phase Extraction – Enhancing Enrichment in Liquid‐Liquid Extraction of Carboxylic Acids. The three‐phase extraction process, a new variant of reactive extraction, has been investigated for its applicability in the separation of organic acids. It has been compared with reactive extraction, liquid membrane permeation and supercritical fluid extraction. These processes are based on the use of amine extractants, which have to be dissolved in non‐polar solvents, for the extraction of carboxylic acids, hydroxycarboxylic acids and aminocarboxylic acids. This paper compares the above processes and considers their possible use for acid e

ISSN:0009-286X    

DOI:10.1002/cite.330650706

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650707

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650708

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650709

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650710

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650711

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY