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Analysis of keto enol tautomers of curcumin by liquid chromatography mass spectrometry

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

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

... Examination of Water. Occurrence of EDTA in river water samples from three regions of Japan was examined. EDTA was detected in ten of thirteen river water samples. A high level of EDTA was observed in ... control of EDTA in drinking water is critical. In Japan’s drinking water quality control, standards are categorized into three groups. The first group is composed of legally binding standards ... Examination of Water are established for the analysis of second and third group items, including EDTA analysis. In these standard methods, EDTA concentration is determined by the evaporation of...
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A discourse analysis of english oscar acceptance speeches delivered by film award winners in the USA

A discourse analysis of english oscar acceptance speeches delivered by film award winners in the USA

... Thus in this thesis A Discourse Analysis of Oscar Acceptance Speeches Delivered by Film Award Winners in the 6 USA is conducted with the aim of contributing a minor part to fulfill the ... Discourse Analysis of English Oscar Acceptance Speeches Delivered by Film Award Winners in the USA . It is hoped that the findings of this study would provide some useful information about the linguistic ... ANALYSIS OF ENGLISH OSCAR ACCEPTANCE SPEECHES DELIVERED BY FILM AWARD WINNERS IN THE USA Field : The English Language Code : 60.22.15 MASTER THESIS IN ENGLISH LANGUAGE (A SUMMARY)...
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An analysis of english reported speech errors made by high school students in nam dan district = phân tích lỗi lời nói gián tiếp trong tiếng anh của học sinh THPT ở huyện nam đàn luận văn thạc sĩ giáo dục học

An analysis of english reported speech errors made by high school students in nam dan district = phân tích lỗi lời nói gián tiếp trong tiếng anh của học sinh THPT ở huyện nam đàn luận văn thạc sĩ giáo dục học

... ENGLISH REPORTED SPEECH ERRORS MADE BY HIGH SCHOOL STUDENTS IN NAM DAN DISTRICT ( Phân tích lỗi lời nói gián tiếp trong Tiếng Anh của học sinh THPT huyện Nam Đàn )FIELD: THEORY AND METHODOLOGY OF ... information30MINISTRY OF EDUCATION AND TRAININGVINH UNIVERSITYPHẠM THỊ THANH VÂN AN ANALYSIS OF ENGLISH REPORTED SPEECH ERRORS MADE BY HIGH SCHOOL STUDENTS IN NAM DAN DISTRICT ( Phân tích lỗi lời nói gián ... inappropriate in terms of the target language. In Errors in Language Teaching and Use” (1980), Carl James defined errors as “being an instance of language that is intentionally deviant and not self-corrigible...
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An error analysis of using reference in written english by secondary   school studend = phân tích lỗi của học sinh THPT tong việc sử dụng phép quy chiếu trong tiếng anh viết

An error analysis of using reference in written english by secondary school studend = phân tích lỗi của học sinh THPT tong việc sử dụng phép quy chiếu trong tiếng anh viết

... TRAN THI ANH THI AN ERROR ANALYSIS OF USING REFERENCE IN WRITTEN ENGLISH BY SECONDARY- SCHOOL STUDENTS( PHÂN TÍCH LỖI CỦA HỌC SINH THPT TRONG VIỆC SỬ DỤNG PHÉP QUY CHIẾU TRONG TIẾNG ANH VIẾT) ... REFERENCE IN WRITTEN ENGLISH BY SECONDARY- SCHOOL STUDENTS ( PHÂN TÍCH LỖI CỦA HỌC SINH THPT TRONG VIỆC SỬ DỤNG PHÉP QUY CHIẾU TRONG TIẾNG ANH VIẾT) GRADUATION THESIS FIELD: LINGUISTICS Supervisor: ... knowledge of reference as well as good ability to use reference as follows:• An analysis of errors made by secondary- students in using personal reference in English. An analysis of errors made by...
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Tài liệu Real-time, on-line monitoring of organic chemical reactions using extractive electrospray ionization tandem mass spectrometry pdf

Tài liệu Real-time, on-line monitoring of organic chemical reactions using extractive electrospray ionization tandem mass spectrometry pdf

... Revised 31 July 2008; Accepted 31 July 2008 Extractive electrospray ionization mass spectrometry (EESI-MS) for real-time monitoring of organic chemical reactions was demonstrated for a well-established ... etc.),16showing its potential for on-line, real-time monitoring of trace amounts of chemicals.We have extended the application of EESI to instantlyfollow organic chemical reactions in a straightforwardmanner, ... L. Zhu et al. Real-time, on-line monitoring of organic chemical reactions using extractive electrospray ionization tandem mass spectrometry Liang Zhu1, Gerardo Gamez1, Huan Wen Chen2**,...
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Tài liệu Báo cáo khoa học: Analysis of the molecular dynamics of medaka nuage proteins by fluorescence correlation spectroscopy and fluorescence recovery after photobleaching doc

Tài liệu Báo cáo khoa học: Analysis of the molecular dynamics of medaka nuage proteins by fluorescence correlation spectroscopy and fluorescence recovery after photobleaching doc

... ª 2007 The Authors Journal compilation ª 2007 FEBS 343 Analysis of the molecular dynamics of medaka nuage proteins by fluorescence correlation spectroscopy and fluorescence recovery after photobleaching Issei ... LSM analysis of Olvas–GFP reveals the dynamicnature of the nuage. Schematic diagram of the preparation of PGCs of medaka specimen (A). Olvas–GFP was expressed in the medaka PGC at stage 24 and ... mea-sure the mobility of the components in the PGCs. The medaka embryo was peeled off the chorion, and the segment containing the part of PGCs was excised forobservation by microscopy and FCS...
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TECHNIQUES FOR THE ANALYSIS OF ORGANIC CHEMECALS BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY (ICP-MS) pptx

TECHNIQUES FOR THE ANALYSIS OF ORGANIC CHEMECALS BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY (ICP-MS) pptx

... Publication number: 5988-6190EN Techniques for the Analysis of Organic Chemicals by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) Petrochemical Authors Ed McCurdy ... match the detection capability of the ShieldTorch System in high purity matrices. This application note deals only with the use of cool plasmas for the analysis of organics, and this technique ... and plasma- based polyatomic interferences, matching the performance of even high resolution ICP-MS. With the ShieldTorch, cool plasmas can be applied to the analysis of virtually all organic...
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Báo cáo khoa học: Systematic quantification of complex metabolic flux networks using stable isotopes and mass spectrometry pptx

Báo cáo khoa học: Systematic quantification of complex metabolic flux networks using stable isotopes and mass spectrometry pptx

... FEBS 2003 Systematic quantification of complex metabolic flux networks using stable isotopes and mass spectrometry Maria I. Klapa*, Juan-Carlos Aon† and Gregory StephanopoulosDepartment of Chemical ... wepresent data validating the use of mass spectrometry (MS)for the quantification of complex metabolic flux networks. In the context of the lysine biosynthesis flux network of Corynebacterium glutamicum ... analysis of undetermined metabolic networks: the quest for the missingconstraints. TIBTECH 15, 308–314.7. Klapa, M.I. (2001) High resolution metabolic flux quantification using stable isotopes and mass...
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Báo cáo khoa học: The changing patterns of covalent active site occupancy during catalysis on a modular polyketide synthase multienzyme revealed by ion-trap mass spectrometry pptx

Báo cáo khoa học: The changing patterns of covalent active site occupancy during catalysis on a modular polyketide synthase multienzyme revealed by ion-trap mass spectrometry pptx

... methylmalonate on both the chain-extensionAT and ACP domains was considerably less than100%. As the AT-catalyzed reaction is readily revers-ible, the extent of loading of methylmalonate on the AT ... Journal 276 (2009) 7057–7069 ª 2009 The Authors Journal compilation ª 2009 FEBS 7059 The changing patterns of covalent active site occupancy during catalysis on a modular polyketide synthase multienzyme ... functional domains, to deter-mine the pattern of covalent attachment of substrates and intermediates to active sites during catalysis. Using the natural substrates, the acyltransferaseand acylcarrier...
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DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf

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

... as internal standards, are rapidly oxidized and/ or chlorinated in water containing residual chlorine. Therefore,residual chlorine must be reduced at the time of sampling. These sametypes of compounds, ... GOODRECOVERY.11.2.1.3 Rinse the disk with 5 mL reagent water by adding the water to the disk and drawing most through, again leavinga layer on the surface of the disk.11.2.2 Add 5 mL MeOH per liter of water ... analytes.2.0 SUMMARY OF METHOD Organic compound analytes, internal standards, and surrogates are extracted from a water sample by passing 1 L of sample water through a cartridge or disk containing asolid...
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báo cáo hóa học:

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

... optimization and validation for the simultaneous determination of arachidonic acid metabolites in exhaled breath condensate by liquid chromatography-electrospray ionization tandem mass spectrometryLuis ... unequivocal determination of the analysed substances.Table 3: Reliability data of the method for the determination of eicosanoids in exhaled breath condensate. Analyte Intra-day precision Inter-day ... Corresponding author AbstractBackground: Determinations of inflammatory markers in exhaled breath condensate were usedto assess airway inflammation. The most applied method for this kind of determination...
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Analysis of keto enol tautomers of curcumin by liquid chromatography mass spectrometry

Analysis of keto enol tautomers of curcumin by liquid chromatography mass spectrometry

... number of exchangeable hydrogens of the enol formand the keto form are different. Two phenolic hydrogens of keto form, and two phenolic hydrogens and one aliphatic hydroxylhydrogen of enol form ... 1 represents animpurity of curcumin with a different structure or another form of curcumin, after fractionation of peak 2, a portion of the fractionwas subjected to analysis again. The chromatogram ... that of the keto form had a folded (non-planar) structure at C-4 position of heptadiene. If peak 1 represents either of the forms, then peak 1would be the keto form and peak 2 would be the enol...
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Báo cáo khoa học:

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

... wereprepared weekly by dilution of stock standard solutions withSimultaneous Determination of Various Macrolides by Liquid Chromatography/Mass SpectrometryYoun-Hwan Hwang, Jong-Hwan Lim, Byung-Kwon ... the simultaneous determination of macrolides. The fragmentation patterns provide the confirmatoryinformation of macrolides. The relevance of these studies forthe determination of macrolide in ... Simultaneous Determination of Various Macrolides by Liquid Chromatography/Mass Spectrometry 105a [M-desosamine+H]+. The m/ z 158.1 of erythromycin androxithromycin was...
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Báo cáo khoa học:

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

... (USA).Determination of Roxithromycin by Liquid Chromatography /Mass Spectrometry after Multiple-Dose Oral Administration in BroilersJong-hwan Lim, Byung-kwon Park and Hyo -in Yun*Division of Veterinary ... Determination of Roxithromycin by Liquid Chromatography /Mass Spectrometry after Multiple-Dose Oral Administration in Broilers 39difficult to set up analytic condition because the determinationmethods ... J.Quantitativedetermination of the macrolide antibiotics erythromycin, roxithromycin, azithromycin and clarithromycin in hu-man serum by high-performance liquid chromatographyusing pre-column derivatization...
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Báo cáo y học:

Báo cáo y học: "Quality evaluation of mycelial Antrodia camphorata using high-performance liquid chromatography (HPLC) coupled with diode array detector and mass spectrometry (DAD-MS)" pps

... AccessQuality evaluation of mycelial Antrodia camphorata using high-performance liquid chromatography (HPLC) coupled with diode array detector and mass spectrometry (DAD-MS)Sandy Shuo Zhao, Kelvin Sze-Yin ... Zhao and Leung: Quality evaluation of mycelial Antrodia camphorata using high-performance liquid chromatography (HPLC) coupled with diode array detector and mass spectrometry (DAD-MS). Chinese ... thisstudy aims to identify the full profile fingerprint of nucleosides and nucleobases in mycelial AC by using high-performance liquid chromatography coupled with diode array detector and mass spectrometry...
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