3methacrylate monolithic columns for nano lc determination of ts and t3s
báo cáo hóa học: " Method optimization and validation for the simultaneous determination of arachidonic acid metabolites in exhaled breath condensate by liquid chromatography-electrospray ionization tandem mass spectrometry" doc
... samples Optimization of online clean-up and enrichment step A LC- LC column switching method was optimized for the automation of sample clean-up and enrichment for the analysis of inflammatory markers ... were thawed and allowed to equilibrate to room temperature mL aliquots of each sample were transferred to 1.8 mL glass screw-cap vial for HPLC analysis and 100 µL of the working solution of the internal ... labelled standard [2H4] LTB4 was used for the correction of leucotriene response values, whereas [2H4] PGE2 was used for prostaglandins and 8-isoprostane For quantification, the peak area ratio of prostaglandins...
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Báo cáo hóa học: " Analysis of in vitro replicated human hepatitis C virus (HCV) for the determination of genotypes and quasispecies" docx
... California Institute of Molecular Medicine (CIMM), and all aspects of this work were performed by CIMM There are no competing interests between California Lutheran University or any other body and ... contributions SZS performed the biological work and the isolations, transmissions, and retransmissions of HCV JGP performed the clinical work, recruitment of patients, and procurement of specimens DR, ... 13 of 15 (page number not for citation purposes) Virology Journal 2006, 3:81 pital, Ventura, CA and the staff of Hematology & Oncology Specialists, Ventura, CA for their continued efforts and...
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Báo cáo y học: "Immediate determination of ACPA and rheumatoid factor - a novel point of care test for detection of anti-MCV antibodies and rheumatoid factor using a lateral-flow immunoassay" pdf
... antibodies and of 55.6% for RF-IgG as well as to a specificity of 99.7% for MCV and of 97.2% for RFIgG Overall, correlation between both methods was 93% regarding detection of anti-MCV antibodies and ... 108 122 200 430 ELISA for anti-MCV antibodies was positive with and for RF with 35 patients Therefore, specificity for MCV was 99.1% and for RF 91.2% using the POCT Analysis of 200 healthy blood ... performance of this novel POCT for RF-IgG and anti-MCV-antibodies and compare it with established procedures, a prospective study was performed in patients with RA Materials and methods Patients...
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Development of computational methods for the rapid determination of NMR resonance assignment of large proteins
... endeavor iii Table of Contents Title page i Acknowledgements ii Table of Contents iv List of Figures viii List of Tables ix List of Abbreviations x Summary xi Chapter 1 Related Background and Previous ... Experiments (a) and (f) correlate the Cα, Cβ and CO frequencies of residue i-1 with the 15 N/1HN frequencies of residue i Experiments (c) and (d) correlate the Cα, Cβ and CO frequencies of residue ... signals and observed signals It consists of three units: ORB, CAPTURE, and PROCESS ORB predicts chemical shifts for unassigned proteins using the chemical shifts of previously assigned proteins together...
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Tài liệu METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER ppt
... ASTM Annual Book of Standards, Part 31, D3694-78 “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents,” American Society for Testing and Materials, ... CFR Parts 136.4 and 136.5 1.7 This method is restricted to use by or under the supervision of analysts experienced in the use of HPLC and GC systems and in the interpretation of liquid and gas ... present, add 80 mg of sodium thiosulfate per liter of sample and mix well EPA Methods 330.4 and 330.5 may be used for measurement of residual chlorine.9 Field test kits are available for this purpose...
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Tài liệu METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER doc
... secondary 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 ... and internal standard, and calculate response factors (RF) for each compound using Equation Equation where: As = Response for the parameter to be measured Ais = Response for the internal standard ... four results 8.2.5 8.3 For each parameter compare s and with the corresponding acceptance criteria for precision and accuracy, respectively, found in Table If s and for all parameters of interest...
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Tài liệu Báo cáo khoa học: Evidence for interactions between domains of TatA and TatB from mutagenesis of the TatABC subunits of the twin-arginine translocase docx
... mutants Results Analysis of TatA and TatB mutants The overall structures of the TatA and TatB subunits are similar: both contain a single TM span, with very short periplasmic N-terminal regions and ... Mutagenesis of TatABC A B Fig Expression of TatA and TatB mutants containing alterations in the transmembrane spans (A) Sequences of the TM regions of TatA and TatB, with residues numbered and the ... 2261–2275 ª 2005 FEBS C M L Barrett and C Robinson Mutagenesis of TatABC A B Fig Effects of mutations in the TM regions of TatA and TatB The TatA and TatB mutants containing alterations in TM spans...
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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER pot
... 51, and 86 101 103 96 61 and 98 63 65, 83, 85, 98, and 100 96 61 and 98 83 85 98 62, 64, and 100 97 99, 117, and 119 117 119 and 121 127 83, 85, and 129 112 63, 65, and 114 75 77 130 95, 97, and ... minimum of headspace The solutions should be checked frequently for stability The addition of 10 µL of this solution of mL of sample or standard is equivalent to a concentration of 30 µg/L of each ... established performance criteria to determine if the results of analyses meet the performance characteristics of the method When results of sample spikes indicate atypical method performance, a...
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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 604—PHENOLS docx
... Standards, Part 31, D3694-78 “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents,” American Society for Testing and Materials, Philadelphia “Carcinogens-Working ... present, add 80 mg of sodium thiosulfate per liter of sample and mix well EPA Methods 330.4 and 330.5 may be used for measurement of residual chlorine 10 Field test kits are available for this purpose ... Chromatography for Pesticide Residue Analysis; Some Practical Aspects,” Journal of the Association of Official Analytical Chemists, 48, 1037 (1965) 12 “Development of Detection Limits, EPA Method...
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Báo cáo khoa học: A new molecular tool for transgenic diatoms Control of mRNA and protein biosynthesis by an inducible promoter–terminator cassette docx
... 5¢-UTR and 3¢-UTR of CfNR allow control of both the timing and level of expression of introduced genes in transgenic C fusiformis Results Increasing the efficiency of C fusiformis transformation ... valve and girdle band formation which are completed in less than h In future, analysis of cell division or valve formation in C fusiformis transformants carrying a gene of interest under control of ... [9] For selection of transformants, bombarded cells were plated on artificial seawater medium containing 1.5% agar and mgÆmL)1 zeocin After days of incubation of the plates under C fusiformis standard...
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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 605—BENZIDINES pdf
... individual falls outside the range for accuracy, the system performance is unacceptable for that parameter Locate and correct the source of the problem and repeat the test for all parameters of interest ... additional 20 mL aliquots of chloroform as before Combine the extracts in the 250-mL separatory funnel 10.8 Add 20 mL of reagent water to the combined organic layers and shake for 30 seconds 10.9 ... 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 used to calculate a suggested...
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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 611—HALOETHERS potx
... “Variation of Florisil Activity: Simple Method for Measuring Absorbent Capacity and Its Use in Standardizing Florisil Columns, ” Journal of the Association of Official Analytical Chemists, 51, 29 ... Standards, Part 31, D3694-78 “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constitutents,” American Society for Testing and Materials, Philadelphia “Carcinogens-Working ... individual falls outside the range for accuracy, the system performance is unacceptable for that parameter Locate and correct the source of the problem and repeat the test for all parameters of interest...
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The Report of the Task Force on Financial Mechanisms for ICT for Development - A review of trends and an analysis of gaps and promising practices ppt
... development of Rwanda towards an information and knowledge based economy The emerging information revolution offers Rwanda a window of opportunity to leap-frog the stage of industrialisation and transform ... lack of easily accessible information about available resources and mechanisms to tap, to high transaction and information gathering costs and time lags in finalizing requests for ODA support And ... DEFINITIONS OF ODA, OOF AND PRIVATE FLOWS 97 ANNEX THE MONTERREY CONSENSUS AND EFFORTS OF DAC MEMBERS 98 ANNEX.3 SUMMARY OF AVAILABLE INSTRUMENTS AT MDBS .100 ANNEX DONOR ICT FOR DEVELOPMENT...
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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 607—NITROSAMINES docx
... “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents,” American Society for Testing and Materials, Philadelphia Buglass, A.J., Challis, B.C., and ... each of four L aliquots of reagent water 8.2.3 8.2.4 Calculate the average recovery ( ) in µg/L, and the standard deviation of the recovery (s) in µg/L, for each parameter using the four results ... accumulation of dust or other contaminants Store inverted or capped with aluminum foil 3.1.2 The use of high purity reagents and solvents helps to minimize interference problems Purification of solvents...
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Future R&D Environments A Report for the National Institute of Standards and Technology potx
... Environments A Report for the National Institute of Standards and Technology Committee on Future Environments for the National Institute of Standards and Technology Division on Engineering and Physical ... set of issues such as changes in the organization and support of R&D in both the public and private sectors, educational goals of students and methods of delivering education, and patterns of ... from a variety of fields (especially from biological, materials, and computer and information science and engineering) and sectors (industry, universities and other nonprofits, and government)...
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Procedures for the Proper Disposition of Equipment and Materials Through Lion Surplus pot
... products, oils, infectious agents, or radioactive materials must be properly cleaned and free of any harmful contaminants before being offered to Lion Surplus for sale b Excess and unneeded products ... fibrous mineral that was used extensively for its insulating and fireproof properties It is often white or gray in appearance and may be in the form of braided or paper wire insulation, woven ... decontamination b Equipment in working order and containing coolants, oils, and refrigerants as part of the equipments function and design may be transferred to Lion Surplus for sale If the equipment contains...
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METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER doc
... ASTM Annual Book of Standards, Part 31, D3694-78 “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents,” American Society for Testing and Materials, ... Area of the characteristic m/z for the parameter to be measured Ais = Area of the characteristic m/z for the internal standard Cis = Concentration of the internal standard Cs = Concentration of ... established performance criteria to determine if the results of analyses meet the performance characteristics of the method When results of sample spikes indicate atypical method performance, a...
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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER ppt
... hygiene—Thorough washing of hands and forearms after each manipulation and before breaks (coffee, lunch, and shift) 4.3.1.4 Confinement—Isolated work area, posted with signs, segregated glassware and tools, ... points per peak For LRMS, use masses at m/z 320, 322, and 257 for 2,3,7,8-TCDD and either m/z 328 for 37Cl4 2,3,7,8-TCDD or m/z 332 for 13 C 2,3,7,8-TCDD For HRMS, use masses at 12 m/z 319.8965 and ... The frequency for the required analysis of a QC check standard will depend upon the complexity of the sample matrix and the performance of the laboratory 8.4.1 Prepare the QC check standard by adding...
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determination of methanol and ethanol
... (total experiments = 10) the best results, being capable of retaining the totality of the alcohol for air volumes up to 60 l, and even 80% for 75 l Florisil columns were then selected for the subsequent ... from other air contaminants, over retention of methanol and ethanol by the sorbent Results for concentrations of methanol and ethanol, measured inside and outside the lab and at urban sites, are ... Breakthrough tests For breakthrough tests, a known amount (6.8 mg) of MeOH or EtOH was collected on columns or impingers containing purified water, by means of a fixed volume (0.60 l) of standard atmosphere...
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Báo cáo khoa học nông nghiệp " POST HARVEST MANAGEMENT AND NEW APPROACH FOR SUPPLY CHAIN SYSTEM OF CABBAGE AND WATER MELON " doc
... sample for cabbage, and total fruits per total sample for water melon III Result and discussion 3.1.Supply chain mapping for cabbage and water melon After harvesting, cabbage and water melon are often ... treatments (lime or alum for cabbage and chlorine for water melon) reduced spoilage significantly A post harvest handbook and TOT/FFS training courses need to be taken place to upgrade knowledge of ... stakeholders A new approach for modern supply chain could be proposed to apply for cabbage and water melon to meet market requirement and consumer demand for higher food quality and safety: - Supply...
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