determination of physical particle titer by elisa

simultaneous determination of PAHs and PCBs by GCMS Analysis

Ngày tải lên : 09/09/2015, 09:39

... product of a study by the British Geological Survey (BGS) into the development of a technique for the simultaneous determination of PAHs and PCBs by GCMS analysis A multiple component mixture of PAH ... Simultaneous Determination of PAHs and PCBs by GCMS Analysis The National Grid and other Ordnance Survey data are used with the permission of the Controller of Her Majesty’s Stationery Office Licence ... identification of PAHs and PCBs by GCMS was successfully developed by this laboratory The programming of associated software to identify and differentiate between similar compounds was an integral part of...

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A study on the error of extra particle no by singaporean secondary school students

Ngày tải lên : 26/09/2015, 10:43

... 80 iv A study on the error of extra particle /no/ by Singaporean secondary school students Summary Singaporean secondary school learners of Japanese often add extra particle /no/ when it is not ... 48 vii A study on the error of extra particle /no/ by Singaporean secondary school students Abstract This paper explores the possible causes of the error of extra particle /no/ found in Singaporean ... the causes of the target errors are intralingual However, these studies not go beyond simple description of the errors By virtue of the general classification of the two categories of participants...

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Determination of EDTA in Water Samples by SPE-Gas Chromatography/Mass Spectrometry

Ngày tải lên : 05/09/2013, 10:15

... 2007) To simplify Japan’s recommended method of EDTA determination by using gas chromatography-mass spectrometry, we focused on the pretreatment of EDTA by using solid-phase extraction in the present ... hand, a standard stock solution of CyDTA was prepared by dissolving 0.01 g of trans-1, 2-cyclohexanediaminetetraacetic in 100 mL of M sodium hydroxide Extraction of EDTA from water samples was ... for the Examintion of Water would be to perform an inter-laboratory validation study of the proposed method Determination of EDTA in river water samples For the application of this analytical...

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Tài liệu Báo cáo " Determination of the annual beta dose by meaming beta activity using the liquid scintillation technique " ppt

Ngày tải lên : 13/02/2014, 04:20

... was of the Ultima Gold AB series of DIN–based cocktails This cocktail was designed specifically, for alpha/beta separation, by the Packard Instrument Company with an aqueous concentration of approximately ... percentage of triplet states produced by alpha particles were translated into electronic pulses at the PMT anode which may be as much as 30 nsec longer than those derived from beta particles and ... pottery by radiocarbon The report of researching project in Archaeological Institute, 2004 [6] Nguyen Quang Mien, Bui Van Loat, Le Khanh Phon, Determination annual dose in thermoluminescent solids by...

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DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf

Ngày tải lên : 22/03/2014, 14:20

... of ethyl acetate followed by methylene chloride, and this extract is concentrated further by evaporation of some of the solvent The sample components are separated, identified, and measured by ... acetone at a concentration of 500 µg/mL of each This solution is used in the preparation of the calibration solutions Dilute a portion of this solution by 10 to a concentration of 50 µg/mL and use this ... the method detection limit of the compound of interest Prepare reagent water by passing tap water through a filter bed containing about 0.5 kg of activated carbon or by using a water purification...

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Báo cáo khóa học: Determination of modulation of ligand properties of synthetic complex-type biantennary N-glycans by introduction of bisecting GlcNAc in silico, in vitro and in vivo pot

Ngày tải lên : 30/03/2014, 13:20

... atom co-ordinates of each sugar moiety are deﬁned by the arithmetic mean value of the co-ordinates of its heavy atoms Conformational analysis of the data obtained used suitable software tools, as ... the studies of cell binding allowed determination of the ligand properties of biantennary N-glycans [37] with either bisecting GlcNAc (this study) Fig Comparison of the percentage of positive ... to the impact of GnT-III activity on the ligand characteristics of N-glycans By measuring the Table Biodistribution of 125I-neoglycoproteins (% injected dose per g of tissue or ml of blood) in...

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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

Ngày tải lên : 20/06/2014, 00:20

... more sources of errors The specificity of the MS detection ensures an unequivocal determination of the analysed substances Page of (page number not for citation purposes) Journal of Occupational ... detection of multiple analytes is possible However, the determination of these kinds of markers in breath condensate makes a sample enrichment step unavoidable when attempting to achieve a low limit of ... Most of the data found in the literature were determinations made by ELISA or RIA, where antibodies cross reactivity should be considered There is limited knowledge about the reliability of enzyme...

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Báo cáo hóa học: " Densification characteristics of chromia/alumina castables by particle size distribution" ppt

Ngày tải lên : 20/06/2014, 23:20

... Unimodal Multimodal Bimodal Particle size distribution Figure The effects of the addition of ultrafine active alumina on the workabilities of castables Figure Effects of adding ultrafine active ... densities of castables Figure Effects of adding ultrafine active alumina on the cold crushing strength of the castables The castables were subjected with different amounts of Cr2O3 at temperatures of ... the workability of chromia/alumina castables, three types of ultrafine alumina powder were added to improve the workability Densification behavior of such castables in the presence of ultrafine...

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Báo cáo hóa học: " Determination of InN/Diamond Heterojunction Band Offset by X-ray Photoelectron Spectroscopy" docx

Ngày tải lên : 21/06/2014, 11:20

... valence band offset of the InN/diamond heterojunction has been measured by XPS A type-I band alignment with a valence band offset of ΔEv ~ 0.39 ± 0.08 eV and conduction band offset of ΔEc ~ 4.42 ... grateful to Professor Huanhua Wang and Dr Tieying Yang in the Institute of High Energy Physics, Chinese Academy of Sciences This work was supported by the 863 High Technology R&D Program of China ... article as: Shi et al.: Determination of InN/Diamond Heterojunction Band Offset by X-ray Photoelectron Spectroscopy Nanoscale Res Lett 2011 6:50 Author details Key Laboratory of Semiconductor Materials...

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Báo cáo khoa học: "Simultaneous Determination of Various Macrolides by Liquid Chromatography/Mass Spectrometry" pps

Ngày tải lên : 07/08/2014, 15:20

... the simultaneous determination of macrolides The fragmentation patterns provide the confirmatory information of macrolides The relevance of these studies for the determination of macrolide in ... curves have been constructed by plotting area against the standard concentrations of macrolides in the range of 0.001 ㎍/㎖ ~ ㎍/㎖ Limit of detection (LOD) and limit of quantitation (LOQ) were based ... an d We lfare Official Methods for Residual Substances in Livestock Products, Ministry of Health and Welfare, J apan, 1994 AOAC In te rn a tion a l Official Methods of Analysis of AOAC International...

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Báo cáo khoa học: "Determination of Roxithromycin by Liquid Chromatography/ Mass Spectrometry after Multiple-Dose Oral Administration in Broilers" pdf

Ngày tải lên : 07/08/2014, 17:22

... tissues by LC-MS has been established The limit of detection and limit of quantitation were ng/g and ng/g These values satisfied the acceptance criteria of the limit of detection and limit of quantitation ... Limit of detection and limit of quantitation were based on the signal-to-noise ratio based on their areas The signal-to-noise ratio of was accepted for the limit of detection and that of 10 for ... is limited for simultaneous determination because of the different derivatization method of each drug [15] Many researchers have reported the determination methods of erythromycin and roxithromycin...

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báo cáo khoa học: "Determination of the volume-specific surface area by using transmission electron tomography for characterization and definition of nanomaterials" docx

Ngày tải lên : 11/08/2014, 00:23

... replaced by the measured ECD of the projected particle divided by two The sphericity, describing the ‘roundness’ of a particle by using central moments, was used to assess the hypothesis that the particle ... voltage of 120 kV Series of micrographs (tilt-series) were recorded semiautomatically assisted by the Xplore 3D tomographymodule of the microscope control software (FEI) over a tilt range of at ... analysis of the transmission electron micrographs of the individual particles taken at a tilt angle of 0° resulted in a mean sphericity of 0.86 Hence, it was concluded that these gold particles...

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Báo cáo y học: "Comparative determination of HIV-1 co-receptor tropism by Enhanced Sensitivity Trofile, gp120 V3-loop RNA and DNA genotyping" ppt

Ngày tải lên : 13/08/2014, 01:20

... the group of patients with an R5 virus population as detected by standard Trofile® [41,42] As shown here, RNA tropism genotyping carries the advantage of a higher efficiency of tropism determination ... Prosperi et al., Comparative determination of HIV-1 coreceptor tropism by Enhanced Sensitivity Trofile, gp120 V3-loop RNA and DNA genotyping Retrovirology 2010, 7:56 Page 11 of 11 ... branch support with a bootstrapped neighbour-joining method Analysis of selection of env mutations by MVC exposure was performed by considering patients with a RNA sequence before (the closest to...

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ASTM D5453 Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence

Ngày tải lên : 20/10/2014, 17:16

... provide a more uniform injection of the sample into the boat by wicking any remaining drops of the sample from the tip of the syringe needle prior to introduction of the sample into the furnace ... part of the inlet area of the furnace Assembly of apparatus to manufacturer’s speciﬁcation and full insertion of the needle will ensure this X2.3 Injection Peak/Needle Blank—Avoid integration of ... the validity of any patent rights asserted in connection with any item mentioned in this standard Users of this standard are expressly advised that determination of the validity of any such patent...

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Xác định lượng vết Selen bằng phương pháp Von- Ampe hòa tan catot xung vi phân khi có mặt Rh = Ultratrace determination of Selenium (IV) by cathodic stripping voltammetry tn the presence of Rhodium

Ngày tải lên : 12/03/2015, 14:47

... - Bom N2 sach 99.99% - Mày pH Metrohm 646 (Thuy Si) - Phàn xù ly thi su dung cbUdng trình Microsoft Excel va origin Két qua va t h o l u a n Duàng Von-Ampe vàng Obi dUdng Von-Ampe vóng tU -0.2V ... M.D.Luque P.V.A.Prasad, J Arunachalam, Electroanalysis (1994) 589 de Castro, S.Gangadharan, P.Papoff, F.Bocci, N.F.Lanca, Microchem.J 59 (1998) 50 Ishiyama, T Tanaka, Anal.Chem 68 (1996) 3789 10...

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Simultaneous determination of sildenafil, vardenafil and tadalafil as forbidden components in natural dietary supplements for male sexual potency by high performance liquid chromatography–electrospray ionization

Ngày tải lên : 02/09/2015, 13:06

... accuracy Precision of the method was evaluated by six consecutive injections of the investigated samples, the resulting RSD varied from 2.6 to 4.7% The accuracy of the method was studied by calculating ... method for the determination of sildenafil [17]; Li et al reported a method for determining sildenafil with capillary electrophoresis [18] While the strategy for the determination of vardenafil and ... areas of the standard compounds against the corresponding concentrations The limit of detection (LOD) of UV detection and MS–SIR was evaluated as the mass giving a signal equal to three times of...

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determination of polycyclic aromatic hydrocarbon pahs and aliphatic hydrocarbons in oysters by gc msms

Ngày tải lên : 09/09/2015, 09:38

... characterize the source of hydrocarbon contamination 10.2 PAHs The occurrence of one or more of any of the 16 PAHs of food safety concern is indicated by the presence of transition ions (quantifier ... indicated below Calibration by the internal standardization is applied for the quantification of PAHs This calibration requires the determination of response factors Rf defined by the equation below ... matched against that of crude oil sample from the Gulf of Mexico The composition of crude oil from the Gulf of Mexico is given in Table indicating relatively high levels of n-hexadecane, n-heptadecane...

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DEVELOPING SOFTWARE TOOLS FOR STRUCTURE DETERMINATION OF LARGE PROTEINS BY NMR SPECTROSCOPY

Ngày tải lên : 04/10/2015, 15:45

... DEVELOPING SOFTWARE TOOLS FOR STRUCTURE DETERMINATION OF LARGE PROTEINS BY NMR SPECTROSCOPY ZHANG LEI B.SC (HONS.), NUS A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF SCIENCE GRADUATE ... thus far i Table of Contents Acknowledgements i Summary iv List of Tables v List of Figures vi List of Abbreviations and Symbols Chapter 1: Introduction viii 1.1 Basic Principles of NMR 1.2 Spin-Spin ... distal end of side-chains are often involved in mid- to long-range NOEs, more high-quality distance constraints can be obtained for accurate structure determination of large proteins iv List of Tables...

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A028 determination of design moment in bridges constructed by balanced cantilever method

Ngày tải lên : 31/10/2016, 20:42

... algorithm consists of four basic steps: the formulation of the current stiffness matrix, the solution of the equilibrium equations for the displacement increments, the stress determination of all elements ... adopted in the derivation of Eq (2), then the structure can be analyzed by means of the rate -of- creep method (RCM) [15], and the creep moments obtained in Fig can be represented by the following expression ... the basis of elastic analysis results without any time-dependent analysis, is in great demand in the preliminary design stage of balanced cantilever bridges 643 by the linear combination of the...

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Physical properties of chemical compounds comp by r r dreisbach

Ngày tải lên : 02/12/2016, 12:56

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