Comparison programmed

Comparisons program and is known as degree of equivalence. This consists of the signed difference between the results, with a combined expanded uncertainty. Thus, for two laboratories with results Ux and x2 U2, the degree of equivalence is ( - x2), with expanded uncertainty VU + . A Student s t test with H0 that the results come from a population with degree of equivalence = 0 can then be used to determine if there is a significant difference between the results. 

Developing a mechanism to expand interlaboratory comparison programs to include a broader array of chemical targets in human specimens no broadly based program exists in the United States. 

Dali Automatic structure comparison program for structural sequence alignments 168 www.ebi.ac.uk/dah/... 

Until 1987, numbers of samples for tbe inter-comparison program were 10-20% of the total samples collected by the local laboratories but were unified to 20 samples for each laboratory. As a result of the 15-year inter-comparison, it has been recognised that inter-comparison is a useful tool for resolving technical problems sometimes encountered and for upgrading the quality of analysis and measurements performed by prefectural hygiene institutes/laboratories. They might also serve to ensure the safety of nuclear power plants. 

Cone, M.M., Venkataraghavan, R. and McLafferty, F.W. (1977). Molecular Structure Comparison Program for the Identification of Maximal Common Substructures. JAm.Chem.Soc., 99, 7668-7671. 

Cone MM, Venkataraghavan R, McLafferty FW. Molecular structure comparison program for the identification of maximal common substructures. J Am Chem Soc 1977 99 7668-7671. 

The situation is even more serious than indicated by the round-robin comparisons. Since 1992, with the aim of confirming our ability to merge data from two different measuring laboratories, CMDL and CSIRO commenced an operational intercalibration (also referred to as the ICP, Inter-Comparison Program, also the flask-air-sharing comparison). Both CSIRO and CMDL... 

Interlaboratory Comparison Program for trace elements in biological fluids includes Al in a serum (http //www.ctq.qc.ca), and they distribute samples six times per year. The Worldwide Interlaboratory Quality Control Aluminium program of the Centre Hos-pitalier Universitaire de Poitiers Hopital Jean Bernard distributes serums and dialysis fluids six times yearly (Guillard et al. 1988) (communication chu-poitiers.fr). 

Quality control procedures should include blanks to indicate contamination. Replicate sample analysis indicates random contamination and precision. Accuracy can be assessed by quantitative recovery of added Al, including use of CRMs that are similar in nature to the samples, utilization of more than one procedure such as standard additions and comparison to aqueous standard curve, comparison to another analytical technique and/or participation in inter-laboratory comparison programs. 

Savoie, J.Y. and Weber, J.P. (1983). Evaluating laboratory performance via an interlaboratory comparison program for toxic substances in blood and urine, in Brown, S.S. and Savory (eds) "Chemical Toxicology and Clinical Chemistry of Metals", p. 77-80, Academic Press, London. 

Weber, J.P. (1986). Interlaboratory comparison program, annual report to participants 1985, Centre de Toxicoiogie du Quebec, 20 p. 

Due to these analytical difficulties Is appears that, particularly in the past, many tooth lead measurements have been performed unsatisfactorily. An interlaboratory comparison program on tooth lead analysis, organized by a lUPAC subcommittee, showed large interlaboratory variations (Stack and Delves, 1982) and in recent years the need for strict quality control has been emphasized repeatedly. 

Malghan, S. G., Dragoo, A. L., Hsu, S. M., Hausner, H., and Pompe, R., Physical and chemical characterization of ceramic powders in an international interlaboratory comparison program. Materials Science Monogram, Ceramics, Today-Tomorrow s Ceramics, Part D, 66D, 3249-3259 (1991). 

The website for the Key Comparison program of the BIPM - http //www.bipm.fr/enus/8-Key-Comparisons. 

S. G. Malghan, A. L. Dragoo, S. M. Hsu, H. Hausner, R. Pompe, "Physical and Chemical Characterization of Ceramic Powders In an International Interlaboratory Comparison Program" Accepted for publication in the proceedings of World Ceramics Congress, 7th CIMTEC, June 1990. 

Should have enrolled in the CTQ interlaboratory comparison program for the appropriate analyte (CDB, CDU and/or B2MU). 

Centre de Toxicologie du Quebec. (1991). Interlaboratory comparison program report for run 2. Shipping date 3/11/91. Addition BLR 9/19. 

Finally, the discussion of 3D MCS algorithms is closely related to the emerging technique of pharmacophore mapping, which seeks to provide automated tools for the identification and subsequent representation of pharmacophore models for sets of biologically related compounds, that is, the 3D chemical and spatial requirements for bioactivity (as reviewed by Bures et al.). 2 An example of work in this area is the DISCO (Distance Comparisons) program that has been developed by Martin et al.203 DISCO identifies the maximum overlap (to within allowed interatomic distance tolerances) between a set of structures, which can be either a set of different molecules or a set different... 

Amino acid residues enclosed by solid lines are those regions of highest homology when compared with McLachlan s (40) sequence comparison program. Tentative sequence identity with porcine pepsin 102 residues = 31.7%, The single letter code for the amino acids is given in Ref.42. 

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