capillary electrophoresis and capillary electrophoresis mass spectrometry for structural analysis of n glycans derived from glycoproteins
Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 6
... compound to study the degradation behavior in ultrapure water, drinking water, rain water, river water and seawater under various pH and irradiation sources (sunlight, darkness, indoor incandescent ... alkaline conditions, while its influence was minor at higher pH (pH > 9) Furthermore, half-lives and degradation rates were obtained in various matrix and irradiation sources Based on kinetic ... lighting and artificial UV lighting) Hydrolysis was found to be very much 143 pH-dependent irrespective of the type of water matrix Light intensity could prompt degradation significantly under...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 5
... 2-isopropoxyphenol and N- methylformamide were obtained from Aldrich (Steinheim, Germany) Stock standard solutions were prepared in methanol at concentrations of 1000 µg/ml for each compound and stored ... extraction temperature, and 6-min microwave heating The differences between the distribution of propoxur and its transformation products in biota and soils, and additionally the difference in the ... channel was 0.1 s, with an interchannel delay of 0.02 s and a mass span of mass unit Quantitation was based on the area under the peak from the mass chromatogram of the above molecular ions at...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 4
... (interaction between extraction solvents and temperature) and A × C (interaction between extraction solvents and time) are not statistically significant It is reasonable to neglect these insignificant ... 4.1.2 Experimental 4.1.2.1 Reagents and soil preparation Analytical-grade PAHs (naphthalene and phenanthrene), PCB (PCB-1242 and PCB1248), triazine (atrazine 98% and simazine 99%), and carbamates ... solubility of triazines in water and the strong ability of water to absorb microwave energy Arising from this observation, water is a safe and environmentally friendly solvent, and should be considered...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 3
... simultaneous determination of carbamate pesticides [7, 9-12] In addition, with the introduction of ion-trap mass analyzers (ITMS), higher sensitivity and accuracy of the structural information on analytes ... application of LC-APCI-MS for the determination of carbamates: carbofuran and 3hydroxy-carbofuran, and the analysis of triazine herbicides in water [8] LC-ESI-MS has been also successfully applied for ... propoxur in various waters (ultrapure water, drinking water, rain water, seawater and river water) under different pH and irradiation sources (sunlight, darkness, indoor incandescent lighting and artificial...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 2
... Polychlorinated biphenyls (PCB-1242 and PCB-1248) were purchased as individual standard stock solutions containing a nominal concentration of 100 µg/ml in methanol from Ultra-Scientific Atrazine (purity ... grinded in a mortar and pestle with liquid nitrogen until a homogenous fine powder was obtained In order to meet the fortification standards for recovery and analytical precision, a portion of ... San Jose, CA, USA) The instrument was initially tuned based on a mixture of caffeine, L-methionyl-arginyl-phenylananyl-alanine acetate·H2O and a mixture of perfluoroalkoxycyclotriphosphazenes...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 1
... of mixtures that, often contain unknowns and/ or analytes in low concentration, the combination of chromatography (for separation) with mass spectrometry (as detector that provides sensitive and ... common analytical technique used for the separation and determination of pesticide 13 residues in environmental and biological samples In order to obtain qualitative and quantitative information ... potential contaminants of aquatic environments and food resources because they are highly soluble in water Hence, evaluation and monitoring of trace levels of carbamates and their transformation...
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Development of methods to improve sensitivity and portability of capillary electrophoresis for the analysis of stabilizers and drugs 1
... Sodium Hydroxide NE1 1-naphthaleneethanol NM1 1-naphthalenemethanol NM2 2-naphthalenemethanol NMR Nuclear magnetic resonance N- nDPA N- Nitroso Diphenylamine NSM Normal stacking mode OD Outside diameter ... Analysis of Native Neomycin Components by Capillary Electrophoresis with Potential Gradient xii Detection, Analytical and Bioanalytical Chemistry, accepted LingLing Yuan, Cerenna Ng, Sam Fong ... method for the studies of many groups of compounds The improvement of sensitivity and the miniaturization of CE technique are two major trends of capillary electrophoresis which have gain more and...
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Development of methods to improve sensitivity and portability of capillary electrophoresis for the analysis of stabilizers and drugs 2
... compounds chosen for this study includes antibiotics (gentamicin and neomycin) and a conditional essential element (carnitine) The main challenge in the analysis of gentamicin was the separation of ... If an ion diffuses into a neighboring zone, its velocity changes and forces it to return to its own zone The concentration in each zone is also determined by the concentration of the leading electrolyte ... There are normally three main kinds of injection methods, which are pressure injection, siphoning injection and electrokinetic injection [6] In pressure injection, the inlet end of the capillary...
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Capillary and microchip electrophoresis for the analysis of small biomolecules
... Trends Anal Chem 2006, 25, 455-466 15 CHAPTER Capillary Electrophoresis Analysis of Adenosine 2.1 Importance of the analysis of adenosine Adenosine is an endogenous nucleoside that can be found ... extraction of an endogenous nucleoside, adenosine, was investigated The extraction served to aid in improving the detection of adenosine via pre-concentrating the adenosine in a small volume of extractant ... potentially fast and sensitive alternative technique for the detection of adenosine1, 9, 10 In addition, its 16 instrumental set-up is simple and relatively inexpensive Low reagent consumption in...
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Tài liệu Báo cáo khoa học: Comparison of membrane fraction proteomic profiles of normal and cancerous human colorectal tissues with gel-assisted digestion and iTRAQ labeling mass spectrometry pptx
... localization (B) Molecular function classification of identified proteins from CRC patients Classification and annotation were performed using the Ingenuity Pathway Analysis Knowledge Base and Gene Ontology ... interactions, communication, transport mechanisms and energy [11] Information from membrane proteomes will help us understand the role of these proteins in fundamental biological processes, and ... simultaneous identification and quantification for data analysis proteins and colorectal tissue samples and to identify interesting protein expression clusters We initially uncovered 438 proteins from eight...
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TECHNIQUES FOR THE ANALYSIS OF ORGANIC CHEMECALS BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY (ICP-MS) pptx
... calibration for 208Pb in pentane Figure Standard addition calibration for Pb (0, 2, 5, 10 and 20 ppb) in Pentane Figure Trace Elements in Xylene - 4-Hour Stability at 2ug/L Level No internal standard ... www.agilent.com/chem/icpms Agilent shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material Information, ... cannot be derived from the water solvent and so another source of oxygen is required For this second group of organic solvents, the oxygen for carbon decomposition is provided by addition of...
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Báo cáo khoa học: Chain initiation on type I modular polyketide synthases revealed by limited proteolysis and ion-trap mass spectrometry doc
... loading module containing an internal disulfide bond between the ATL and the phosphopantetheine of ACPL; LM1(S-S), singly acylated loading module containing an internal disulfide bond between the ... fragments from DKS is shown in Fig 2C The masses corresponding to each of the fractions are shown in Table The precise location and identity of each digestion fragment were assigned by mass mapping ... resulting from tryptic digestion of DKS; (B) mass spectrum of the loading didomain ATL-ACPL resulting from tryptic digestion of DKS, after subsequent treatment with NPDS The formation of an internal...
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CHARACTERIZATION OF IMPURITIES AND DEGRADANTS USING MASS SPECTROMETRY pot
... and m2) on the screen was dependent on ion charge and kinetic energy, the electric and magnetic field strengths, and the dimensions of L and D (Reprinted from Ref 10, with permission of John Wiley ... reagent species for reactions, and (3) enhanced chemical specificity in terms of structural analysis when employing strategies of fragmentation The isolation and fragmentation of analyte ions for ... including m/z isolation and fragmentation Tandem MS is also referred to as “MS/MS” for two TANDEM MASS SPECTROMETRY 29 stages of mass analysis or “MSn,” where n is the number of stages of mass analysis...
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báo cáo khoa học: " Analysis of expressed sequence tags from a single wheat cultivar facilitates interpretation of tandem mass spectrometry data and discrimination of gamma gliadin proteins that may play different functional roles in flour" ppt
... substitutions in the signal peptide, one substitution in region I, and substitutions, one amino acid deletion and a amino acid insertion that contains the additional cysteine residue in region II In proteins ... 86 contigs contain complete coding regions for gamma gliadin proteins Contig #9 is missing a portion of the 3’ end of the coding region and contig #11 is missing a portion of the 5’ end of the ... (Additional File 1) Sixteen ESTs, all representing 3’ portions of gamma gliadin coding regions, were assigned to more than one contig Of these, seven ESTs were assigned to both contigs #1 and and nine...
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Báo cáo y học: "Thioglycosides as inhibitors of hSGLT1 and hSGLT2: Potential therapeutic agents for the control of hyperglycemia in diabetes"
... pioglitazone) and/ or to control hepatic glucose release (using biguanides) [7] In addition, manipulation of insulin through exogenous insulin administration or increase of endogenous insulin production, ... in CHO cells not exposed to thioglycoside (control cells) using independent t-test analysis, and expressed as percent inhibition from uptake in control cells The change in fluorescence resonance ... glucose transport in the presence of sodium For sodium free conditions, KRH solution containing 120 mM N- methyl-glucamine (NMG) instead of NaCl (Na+) was used to assess the sodium-independent D-glucose...
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Tài liệu Carrots, Sticks, and Promises: A Conceptual Framework for the Management of Public Health and Social Issue Behaviors docx
... element of MacInnis, Moorman, and Jaworski's (1991) model and is referred to as consumers' skills or proficiencies in interpreting brand information in an advertisement (see also Alba and Hutchinson ... Maclnnis, Deborah J_ Christine Moorman, and Bernard J Jaworski (1991), "Enhancing and Measuring Consumers' Motivation, Opportunity, and Ability to Process Brand Information From Ads," Journal of ... important in the use of a marketing perspective An appreciation of the self-interest of the target, the benefits of an exchange, and the constraining nature of power and competition are needed...
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The importance of project management in small- and medium-sized enterprises (SMEs) for the development of new products through E-collaboration docx
... beginning and an ending, and project management has corresponding initiating and closing processes The middle, or work of the project, is managed by planning, executing, and monitoring and controlling ... Portland International Conference on Management and Technology Chou C (2008) Entities' representation modes and their communication effects in collaborative design for smes J Adv Manuf Technol., ... communication between a designer in the department of design and project manager is essential before starting production √ √ √ √ H2: Coordination between product manager and project manager is necessary...
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Báo cáo khoa học: "Computing and Evaluating Syntactic Complexity Features for Automated Scoring of Spontaneous Non-Native Speech" pot
... system: Recognition and pronunciation scoring for language learning Proceedings of InSTiLL-2000 (Intelligent Speech Technology in Language Learning), Dundee, Scotland Franco, H., Neumeyer, L., ... Description: used to train sentence and clause boundary detectors, evaluate features and train scoring models 300 52 5.77 Description: human transcriptions and annotations of sentence and clause boundaries ... 0.423 NP/S PT Mean number of noun phrases (NP) per sentence 0.244 -0.411 CN/S PT Mean number of complex nominal per sentence 0.325 0.653 VB _ling/T PT Mean number of linguistically meaningful...
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Báo cáo khoa học: Re-evaluation of intramolecular long-range electron transfer between tyrosine and tryptophan in lysozymes Evidence for the participation of other residues doc
... determined, were screened for the fluorescence signal obtained when an excitation wavelength of 380 nm is used The signal was observed in peptides containing tryptophans 108 and 111 Because none of ... changes during this one-electron transfer from tyrosine to TrpÆ resemble the changes obtained with peptides containing both tryptophan and tyrosine; i.e absorbance maxima at % 510 and 410 nm, and ... fractions containing the dimerized proteins Table Rate constants of LRET, number and location of Tyr and Trp residues, for the various lysozymes Lysozyme source (No of amino acids) Number of Trp/...
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YouTh and The Media NatioNal Programme for the PromotioN of media SkillS pdf
... 3-6-9-12 rule No screens under the age of 3, no gaming consoles under the age of 6, no Internet under the age of and no unsupervised Internet under the age of 12 Observe the age ratings Both for films ... risks and know how they can protect themselves Parents and teachers have an important supportive role to play in listening attentively, acting as a trusted sounding board and learning alongside ... phones and tablets Check who your child is chatting with Children should meet online acquaintances only in public places and in the presence of their parents Warn your child not to enter personal...
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Tìm thêm: xác định các mục tiêu của chương trình khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản khảo sát chương trình đào tạo gắn với các giáo trình cụ thể xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến hiệu suất h fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008