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The goal of eLearning services integration in manufacturing is, through the development of new multimedia solutions, to accelerate and enhance the ability of the manufacturing industry to capitalise on the emergence of a powerful global information infrastructure. The key components of our approach are: (1) an XML based streaming service specification language; (2) automatic configuration of distributed eLearning streaming service implementations; (3) a set of Web services for searching, registration, and creation of streaming services; (4) caching and replication policies based on timing information derived from the service specifications. We also introduce a new concept for cache management during runtime, e.g., content is distributed to cache servers located at the edge of a network close to the client.
Turbulenzarme Verdrängungsströmungen (TAV), häufig auch als Laminarflow (LF) bezeichnet, werden in hochreinen Reinraumbereichen eingesetzt, um die Versorgung des kritischen Bereiches (offenes Produkt) mit schwebstoffgefilterter bzw. partikelfreier Luft zu gewährleisten. Die TAV kann durch Störgrößen, wie Thermikströme, Personeneingriffe, Strömungshindernisse, Materialtransport usw. gestört werden, womit eine unerwünschte Kontamination des kritischen Bereiches einhergehen kann.
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(2005)
The Division Industrial Chemistry of the Swiss Chemical Society organizes periodically a two-day event for the post-graduate education of its members. This event is known as the Freiburger Symposium. This year it focussed on sustainable chemical production. The twelve talks covered the following aspects: ethical needs for sustainability standards, the required, attained, and yet to be attained sustainability goals in chemical industry. Diverse case studies showed the highly developed awareness about the sustainability issue within the chemical community.
Zur Messung geringer Massenkonzentrationen und der Partikelgrößenverteilung unter hohen Druck- und Temperaturbedingungen, wie sie z.B. bei Überwachung des Gasstromes in Druckwirbelschichtfeuerungen oder in Druckkohlestaubfeuerungen vorkommen, wird ein kompensiertes Streulichtfotometer vorgeschlagen. Streulicht- und Transmissionswerte des Partikelkollektivs werden erfasst und miteinander verknüpft. Als Vorteil dieses Mess- und Auswerteprinzips ergibt sich im Gegensatz zu konventionellen Fotometern eine weitgehende Unempfindlichkeit gegenüber Fenster-Verschmutzung und Alterung von Komponenten. Das neue Konzept ist bis etwa 900 ºC einsatzfähig.
Diode-array planar chromatography is a versatile tool for identification of pharmaceutical substances In this paper thirty-three compounds with benzodiazepine properties were investigated and the separating conditions for silica gel HPTLC plates and three mobile phases were optimized. Diode-array HPTLC makes it possible to identify all the compounds with high certainty down to a level of 20 ng. An algorithm for spectral recognition which is combined with R F values from the three separation steps into one fit factor is presented. This set of data is unique for each of the compounds investigated and enables unequivocal identification. The method is rapid, inexpensive, and sensitive down to a level of 20 ng mL −1.