analysis of chemical warfare agents

Báo cáo khoa học: "A System for Semantic Analysis of Chemical Compound Names" pdf

Ngày tải lên : 08/03/2014, 01:20

... a crucial role in classification of chemical compounds. For example, hy- droxy, used as a prefix of a name, specifies the presence of an OH-group (consisting of an oxygen atom and a hydrogen atom). ... constraints of CSP-1 equal the constraints of CSP-2. 3 Conclusions and Future Work In this paper we presented the architecture of CLP(name2structure), a system for semantic and syntactic processing of chemical ... Processing University of Stuttgart Azenbergstr. 12 70174 Stuttgart, Germany engelken@eml-research.de Abstract Mapping and classification of chemical compound names are important aspects of the tasks of BioNLP....

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CHEMICAL ANALYSIS OF WATER AND WASTEWATER

Ngày tải lên : 23/07/2013, 20:57

... particularly effective in the analysis of organic pollutants. 24.7. ANALYSIS OF WATER SAMPLES The preceding sections of this chapter have covered the major kinds of analysis techniques that are ... LLC 24 CHEMICAL ANALYSIS OF WATER AND WASTEWATER __________________________ __________________________ 24.1. GENERAL ASPECTS OF ENVIRONMENTAL CHEMICAL ANALYSIS Scientists’ understanding of the ... know- ledge of the identities and quantities of pollutants and other chemical species in water, air, soil, and biological systems. Therefore, proven, state -of- the-art techniques of chemical analysis, ...

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Tài liệu METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER ppt

Ngày tải lên : 14/02/2014, 03:20

... quality control program. The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data ... for the required analysis of a QC check standard will depend upon the number of parameters being simultaneously tested, the complexity of the sample matrix, and the performance of the laboratory. ... Pesticide Residue Analysis; Some Practical Aspects,” Journal of the Association of Official Analytical Chemists, 48, 1037 (1965). 11. Cole, T., Riggin, R., and Glaser, J. “Evaluation of Method Detection...

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Tài liệu METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER doc

Ngày tải lên : 14/02/2014, 03:20

... quality control program. The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data ... for the required analysis of a QC check standard will depend upon the number of parameters being simultaneously tested, the complexity of the sample matrix, and the performance of the laboratory. 8.4.1 ... dilution standard be prepared at a concentration of 15 µg/mL of each internal standard compound. The addition of 10 µL of this standard to 5.0 mL of sample or calibration standard would be equivalent...

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Review of International Technologies for Destruction of Recovered Chemical Warfare Materiel ppt

Ngày tải lên : 05/03/2014, 12:20

... requires a DRE of 99.9999 percent (six nines). Incineration is capable of destroying chemical agents to a level of at least 99.9999 percent. Although incineration of chemical agents has lost ... community from releases of chemical agent. Copyright © National Academy of Sciences. All rights reserved. Review of International Technologies for Destruction of Recovered Chemical Warfare Materiel ... Technologies for Destruction of Recovered Chemical Warfare Materiel http://www.nap.edu/catalog/11777.html 24 REVIEW OF INTERNATIONAL TECHNOLOGIES FOR DESTRUCTION OF RECOVERED CHEMICAL WARFARE MATERIEL TABLE...

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ANALYSIS OF NAMES OF ORGANIC CHEMICAL COMPOUNDS BY USING PARSER COMBINATORS AND THE GENERATIVE LEXICON THEORY doc

Ngày tải lên : 05/03/2014, 20:20

... its objective of performing lexical, syntactic and semantic analysis of organic chemical compound names and, whenever this analysis succeeds, generating the pictures of their chemical structures, ... terminology. The abilities of analysing and correcting the ambiguities of the inadequate names and of using an optimized extension of Xymtec to represent the pictures of the chemical structures in ... automatic Organic Chemistry instructor specialized in the analysis of names of organic chemical compounds and in the generation of their chemical structure pictures. OCLAS is able to analyse correct...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER pot

Ngày tải lên : 05/03/2014, 21:20

... 15-40% of Mass 95. 75 30-60% of Mass 95. 95 Base Peak, 100% Relative Abundance. 96 5-9% of Mass 95. 173 <2% of Mass 174. 174 >50% of Mass 95. 175 5-9% of Mass 174. 176 >95% but 101% of Mass ... for the required analysis of a QC check standard will depend upon the number of parameters being simultaneously tested, the complexity of the sample matrix, and the performance of the laboratory. ... the base of the water column. The purging device illustrated in Figure 1 meets these design criteria. solution of 5 mL of sample or standard is equivalent to a concentration of 30 µg/L of each...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 604—PHENOLS docx

Ngày tải lên : 05/03/2014, 21:20

... required analysis of a QC check standard will depend upon the number of parameters being simultaneously tested, the complexity of the sample matrix, and the performance of the laboratory. 6. Reagents 6.1 ... quality control program. The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data ... example of the separations achieved by this column is shown in Figure 2. 12.9 Calibrate the system daily with a minimum of three aliquots of calibration standards, containing each of the phenols of...

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CHEMICAL ANALYSIS OF ANTIBIOTIC RESIDUES IN FOOD pptx

Ngày tải lên : 11/03/2014, 03:20

... Natural Occurrence of CAP, 235 7.4.4 Analysis of CAP in Herbs and Grass (Feed) Using LC-MS, 236 7.4.5 Conclusions, 236 7.5 Nitrofurans, 236 7.5.1 Background, 236 7.5.2 Analysis of Nitrofurans, 236 7.5.3 ... Background, 227 7.2.2 Analysis, 229 7.2.3 Conclusions, 230 7.3 Ceftiofur and Desfuroylceftiofur, 230 7.3.1 Background, 230 7.3.2 Analysis Using Deconjugation, 231 7.3.3 Analysis of Individual Metabolites, ... area of environmental issues related to veterinary use of antimicrobials. For the bench analyst, it provides not only information on sources of methods of analysis but also an understanding of...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 605—BENZIDINES pdf

Ngày tải lên : 14/03/2014, 20:20

... for the required analysis of a QC check standard will depend upon the number of parameters being simultaneously tested, the complexity of the sample matrix, and the performance of the laboratory. 8.4.1 ... identifications should be based upon measurements of actual retention time variations of standards over the course of a day. Three times the standard deviation of a retention time for a compound can be ... collection of a minimum of 250 mL of sample. Sample containers must be kept refrigerated at 4°C and protected from light during compositing. If the sampler uses a peristaltic pump, a minimum length of compressible...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 611—HALOETHERS potx

Ngày tải lên : 14/03/2014, 20:20

... containing a concentration of C, in µg/L. Equation 2 where: A = Amount of material injected (ng). V = Volume of extract injected (µL). i V = Volume of total extract (µL). t V = Volume of water extracted ... for the required analysis of a QC check standard will depend upon the number of parameters being simultaneously tested, the complexity of the sample matrix, and the performance of the laboratory. 8.4.1 ... 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER METHOD 611—HALOETHERS 1. Scope and Application 1.1 This method covers the determination of certain haloethers....

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 607—NITROSAMINES docx

Ngày tải lên : 22/03/2014, 14:20

... quality control program. The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data ... the method. When results of sample spikes References 1. Fine, D.H., Lieb, D., and Rufeh, R. “Principle of Operation of the Thermal Energy Analyzer for the Trace Analysis of Volatile and Non-Volatile ... for the required analysis of a QC check standard will depend upon the number of parameters being simultaneously tested, the complexity of the sample matrix, and the performance of the laboratory. 8.4.1...