Electronic Data Analysis Service

Tools Electronic Data Analysis Service (ELECTRAS)... 

The electronic data analysis service (ELECTRAS), which was developed at the Com-puter-Chemie-Centrum of the University of Erlangen-Ntlmberg through a project supported by the DFN-Verein and the BMBF, is a web-based application which presents an interface to various kinds of data analysis methods. It offers the methods... 

Electronic Data Analysis Service (ELECTRAS), http //uwwZdiemie.uni-erlangen.de/projects/eDAS/index.html... 

Service - Chemicals are still purchased on a price per kilogram basis. The supplier offers additional services such as just-in-time delivery, direct electronic ordering via an Electronic Data Interface, routine analysis of process streams and advice on chemicals usage, etc. The supplier still has an incentive to sell more chemicals, but does have more to lose should the end user change supplier. 

The usefulness of this text will be greatly enhanced if you supplement it with information from current periodicals, basic references, statistical collections, abstracting services, indexes, and electronic data obtained from the World-Wide Web. This will allow you to update the data given in the text and—even more important—provide practice in finding the information chemical professionals need in day-to-day analysis and problem solving. The most important sources in this section are labeled with two asterisks and the next most important with one asterisk. If you are using the book for self-directed study, you should subscribe or have access to the doubled-asterisked periodicals and read the single-asterisked periodicals, become acquainted with the contents of the references with asterisks, locate a library with national and international references, and obtain a copy of the Statistical Abstract of the United States (Sections 0.1.1 and 0.1.2). 

The questionnaire is administered, either in paper or electronic form, with the paper questionnaire distributed by the ANSP to all targeted staff (which is usually all staff in the ANSP, excluding external contractors). An electronic version of the questionnaire has also been developed. This is more efficient in the analysis stage but participation depends on the availability of computers for operational staff. The questionnaires are returned directly to an academic partner, currently the London School of Economics (until 2011 the University of Aberdeen provided this service), for analysis. The academic partner ensures that data analysis remains independent and thus provides additional assurance of confidentiality to ANSP staff, as neither ANSP nor EUROCONTROL persoimel see the raw data or filled-in questioimaires. 

The emphasis of this work is on the analysis of plastic additives through gas chromatography/mass spectrometry (GC/MS). GC/MS systems are a common analytical tool in quality control and analytical service laboratories and electron impact (El) mass spectra are recognized as reliable data for the identification of organic compounds. Traditional methods have employed a flame ionization detector (FID) with identifications based solely on GC retention time data. These methods lack the specificity necessary to distinguish between components attributable to the sample matrix or the additive(s). 

Continuous scans of modulus versus temperature utilizing the DuPont Dynamic Mechanical Analyzer (DMA) has provided a comparison of the high temperature service capabilities of radiation-cured experimental formulations of a vinyl-modified epoxy resin. Shell Epocryl-12. These scans were compared to data obtained when the same materials were applied as adhesives on aluminum test panels, radiation-cured with an electron beam, and lap shear strength tested at discrete temperatures. The DMA instrument utilizes a thin rectangular specimen for the analysis, so specimens can be cut from blocks or from flat sheets. In this case the specimens were cured as sheets of resin-saturated graphite-fibers. The same order of high temperature stability was obtained by each method. However, the DMA method provided a more complete characterization of temperature performance in a much shorter test time and thus, it can be very useful for quick analyses of formulation and processing variables in many types of materials optimization studies. The paper will present details of this study with illustrations of the comparisons. 

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