Complex mixture

Thermophysical properties of industrially complex fluids whose composition is always ill-defined are in practice predicted by using thermodynamic models. To ensure the prediction accurately and reliably, a three-step procedure to obtain the properties of these fluids must be validated. The focus of this study is laid on a short review of tools which can be served for each of the three steps.

10p vibenya 31-12-2024 7 2   Download

In this study, the selective oximation of structurally diverse aromatic aldehydes (versus ketones) to the corresponding aldoxime derivatives was investigated using the combination system of NH2OH·HCl and bis-thiourea complexes of cobalt, nickel, copper and zinc chlorides, MII(tu)2Cl2, in a mixture of CH3CN-H2O (1:1).

10p tocectocec 25-05-2020 15 2   Download

Liquid chromatography mass spectrometry (LC-MS) is a valuable tool in the analysis of proteins and peptides.The combination of LC-MS with different fragmentation methods provides sequence information on components in complex mixtures.In this work, on-line packed capillary LC electrospray ionization Fourier transform ion cyclotron resonance MS was combined with two complementary fragmentation techniques, i.e.

7p tumor12 20-04-2013 49 2   Download

The lipopolysaccharide (LPS) ofChlamydia trachomatis serotype E was isolated from tissue culture-grown element-ary bodies and analyzed structurally by mass spectrometry and 1 H, 13 Cand31 P nuclear magnetic resonance. The LPS is composed of the same pentasaccharide bisphosphate aKdo-(2–8)-aKdo-(2–4)-aKdo-(2–6)-bGlcN-4P-(1–6)-aGlcN-1P (Kdo is 3-deoxy-a-D-manno-oct-2-ulosonic acid) as reported forC. trachomatisserotype L2[Rund,S.,Lind-ner,B.,Brade,H. and Holst,O. (1999)J. Biol. Chem.274, 16819–16824].

11p tumor12 20-04-2013 39 4   Download

The peptide hormone endothelin transmits various signals throughGprotein-coupled receptors, the endothelin type A (ETAR) and B (ETBR) receptors. Caveolae are specialized lipid rafts containing polymerized caveolins. We examined the interaction of ETBR with caveolin-1, expressed in Sf9, COS-1, and HEK293 cells, and its effects on the subcellular distribution and the signal transduction of ETBR.

12p fptmusic 16-04-2013 28 2   Download

Bermuda grass pollen (BGP) contains a very complex mixture of allergens, but only a few have been characterized. One of the allergens, with an apparent molecular mass of 21 kDa, has been shown to bind serum IgE from 29% of patients with BGP allergy. A combination of chromato-graphic techniques (ion exchange and reverse phase HPLC) was used to purify the 21 kDa allergen.

10p dell39 27-03-2013 60 3   Download

Cell-free protein synthesis using cell extracts from Escherichia coli, wheat germ and rabbit reticulocytes has been used for over 40 years to produce small amounts of radiolabeled proteins for identification of gene products and other applications. In the E. coli system programmed with plasmid DNA, the cell extract contains or is supplemented with an RNA po-lymerase to transcribe the gene, and the mRNAs are translated by a complex mixture that contains ribo-somes and a full complement of initiation,...

2p inspiron33 25-03-2013 44 6   Download

High-throughput metabolomics is a dynamically developing technology that enables the mass separation of complex mixtures at very high resolu-tion. Metabolic profiling has begun to be widely used in clinical research to study the molecular mechanisms of complex cell disorders.

11p viettel02 22-02-2013 34 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Fixed-Point Algorithms for the Blind Separation of Arbitrary Complex-Valued Non-Gaussian Signal Mixtures

15p dauphong20 10-03-2012 49 4   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Immobilized pH gradient-driven paper-based IEF: a new method for fractionating complex peptide mixtures before MS analysis...

21p thulanh17 27-10-2011 49 6   Download

BASICS OF CRUDE OIL Crude oils are complex mixtures containing many different hydrocarbon compounds. An average crude oil contains about 84% carbon, 14% hydrogen, 1 ÷ 3% sulfur and less than 1% each of nitrogen, oxygen, metals and salts. Simple crude oil assays are used to classify crude oils as paraffinic, naphthenic, aromatic or mixed, based on the predominant proportion of similar hydrocarbon molecules. The comprehensive crude assays determine the value of the crude: its yield and quality of useful products.

5p vitconsieuquay 19-08-2011 254 141   Download