calculations preparation and properties of various types of substances commonly used in toxicology

preparation and properties of magnetic iron oxide nanotubes

Ngày tải lên : 20/03/2014, 13:06

... in sample S2 (c and d) and ␥-Fe2 O3 nanotubes in sample S3 (e and f) B Lv et al / Particuology (2008) 334–339 and outer and inner diameters of 70–120 nm and 45–80 nm, respectively Fig 3(c) and ... bonds between adsorbed phosphate ions and iron ions would form spin pinning and block spin ﬂip conversion, directly resulting in the increase of coercivity of the samples Second, the nanotube structure ... López-Urías, and Mu˜ oz-Sandoval (2005) n simulated the micromagnetic property of iron nanorings, and they found large coercive ﬁelds for din /dout > 0.5 (din and dout are the inner and outer diameters of...

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Báo cáo hóa học: " Preparation and properties of copper-oil-based nanofluids" ppt

Ngày tải lên : 21/06/2014, 03:20

... thermal conductivity, and thermal oxidation stability of the nanofluids are also investigated Experimental Materials and preparation of ligand All the materials and solvents used in this study, P2S5, ... to be used as additives in oils Viscosities and thermal conductivities of nanofluids The effects of both temperature and mass fraction of the nanoparticles on the viscosities of the nanofluids ... process of the particles with a heating rate of 10 K/min in N2 with a flow rate of 20 mL/min Transmission electron microscopy (TEM) images were taken with JEM200CX (JEOL, Japan) instrument using...

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báo cáo khoa học: " Preparation and properties of the specific anti-influenza virus transfer factor" pot

Ngày tải lên : 11/08/2014, 20:20

... containing solution induced a delayed type hypersensitivity reaction in the back skin within about twenty four hours following the introduction of the influenza virus vaccine Activity of TF in ... Activity of Transfer Factor in oral and injecting administration in vitro and in vivo J Chinese Bioproducts 1997, 10:91-934 Submit your next manuscript to BioMed Central and take full advantage of: ... analysed with type of 835-50 Amino acid auto-analysing instrument The contents of polypeptide and nucleoside Detection for content of polypeptides in TF including specific, non-specific and normal transfer...

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Preparation, structure, and properties of solutionpolymerized styrenebutadiene rubber with functionalized endgroups and its silicaﬁlled composites

Ngày tải lên : 11/06/2016, 22:43

... either the half height of the Cp step, the onset of the transition obtained by extrapolating the tangent of the in ection point to the initial baseline, the in ection point of the step, or the 1/2 ... frequency of 10 Hz, a heating rate of C/min, and a double strain amplitude of 0.1% over a temperature range of À100 to 100 C Each sample was 30 mm in length, mm in width, and mm in thickness ... -ε% and tand-ε% curves of vulcanizates (60 C) improve the silica-rubber linkage and silica dispersion in rubber matrix From tand-ε% curve, tand value of 1# vulcanizate is the highest and increases...

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Preparation and characterization of the PVDF-based composite membrane for direct methanol fuel cells

Ngày tải lên : 05/09/2013, 16:11

... Plant (Shanghai, China) The PVDF composite membrane was made in our laboratory using a combination technique of thermally induced polymerization and phase inversion, and all of the other reagents ... decomposition of the PVDF main chains [28] ISSN 2076-2895 (Print), ISSN 2076-2909 (Online) ©2010 International Energy & Environment Foundation All rights reserved 646 International Journal of Energy and ... weak in the PVDF-based composite membranes Blending of styrene is confirmed by the presence of aromatic ring features at 1493 and 1602 cm−1 corresponding to the presence of skeletal C=C in plate...

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Tài liệu Nature and Properties of Micro-organisms doc

Ngày tải lên : 12/12/2013, 17:15

... penicillins, cephalosporins and vancomycin lipoteichoic acid, septic shock Beta-lactamases    hydrolyse penicillins and cephalosporins secreted by Gram positive bacteria Within periplasm of Gram ... invasiveness of pathogenic bacteria by reducing opsonisation and protecting from phagocytosis  E.g Streptococcus pneumoniae in RTI  vaccination: pneumococcal; meningococcal A and C  GLYCOCALYX ... bacteria, shorter and finer than flagella  Two classes:  ordinary pili ‘colonisation antigens’ Protein, attachment to host cells Can be involved in host cell invasion e.g Neisseria meningitidis ...

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Tài liệu Báo cáo " Preparation and characteristics of LiF:Mg,Cu,Na,Si thermoluminescent material " pptx

Ngày tải lên : 13/02/2014, 04:20

... temperature range of 750-850 o C for interval of 10-40 minutes and then it was quickly cooled to room temperature Final product was pulverized, sieved to select grains having sizes in the range of 60-150 ... annealed in N2 gas flow with a rate of l/min at various temperatures: 750, 800, 830, and 850 o C The results shown in Fig indicate that annealing temperature has strongly affected the TL intensity and ... with the rate of l/min for various time intervals: 10, 20, 30, and 40 From Fig and the inset on it, it can be seen that for a sample amount of 1.5 g the optimum annealing time intervals at 800...

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Tài liệu Báo cáo "Preparation and characterization of nanocomposite TiO2/SnO2 films " pdf

Ngày tải lên : 13/02/2014, 04:20

... Characterization of nanocrystalline TiO2 films prepared by means of solution spray method, Proceedings of the 9th APPC, Hanoi (2004) 348 Wen-Deng Wang, Fu-Qiang Huang, Cun-Ming Liu, Xin-Ping Lin, Jian-Lin ... photocurrent in this system In this work, SnO2 was formed from SnCl4 during annealing impregnated TiO2 film Therefore photoeffect of impregnated TiO2 films increases according to time and temperature of ... Shi, Preparation, electronic structure and photocatalytic activity of the In2 TiO5, Materials Science and Engineering: B Vol 139 (1) (2007) 74 J.H Kim, S.H Kim, et al., Fabrication of nanoporous and...

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Tài liệu Báo cáo khoa học: Tryptophan tryptophylquinone cofactor biogenesis in the aromatic amine dehydrogenase of Alcaligenes faecalis Cofactor assembly and catalytic properties of recombinant enzyme expressed in Paracoccus denitriﬁcans pptx

Ngày tải lên : 19/02/2014, 07:20

... The lack of inhibition observed with benzylamine (Fig 5A) in comparison to the inhibition observed with tryptamine (Fig 5B) suggests differences in binding of the two substrates within the active ... is < 6% of the determined value Kinetic and thermodynamic parameters were obtained from fitting data to the Eyring equation sion of AADH, A faecalis and P denitrificans were cultured in minimal ... each containing 1000 data points The absorbance changes accompanying enzyme reduction with benzylamine were monophasic, and observed rates were obtained by fitting using the standard single exponential...

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Tài liệu Báo cáo khoa học: Identi®cation and properties of type I-signal peptidases of Bacillus amyloliquefaciens doc

Ngày tải lên : 21/02/2014, 03:20

... GTAAAACGACGGCCAGT Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipV Cloning of sipV Cloning of sipV Cloning of sipV ... sipV Cloning of sipV Cloning of sipV Cloning of sipV Construction of pOpacVh Construction of pOpacVh Cloning of sipW Cloning of sipW Cloning of sipW Cloning of sipW Cloning of sipW Cloning of sipW ... was used for PCR ampli®cation as follows: The DNA of B amyloliquefaciens was cut with either PstI and EcoRI in case of sipV or EcoRI-SacI in case of sipW and ligated into corresponding sites of...

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Báo cáo " Study on the characteristics and catalytic properties of Pt/SBA-15 in the selective oxidation of D-Glucose " potx

Ngày tải lên : 05/03/2014, 11:21

... formation of gluconolactone and disaccharide and inhibited the catalyst activity [2] So, we should add alkaline solution continuously to maintain pH value at during the oxidation process In table ... selectivity in the oxidation of glucose When increasing the content of Pt loading, most Pt nanoparticles aggregated outside the channels of SBA-15 with size of 10-15nm and catalytic activities of these ... filtration, washing with distilled water and drying at 100oC, the sample was calcined at 550°C in ambient air for 5h and the white SBA- 15 was obtained Synthesis of Pt/SBA-15: Platinum was supported...

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Báo cáo khoa học: Structure analysis of the ﬂavoredoxin from Desulfovibrio vulgaris Miyazaki F reveals key residues that discriminate the functions and properties of the ﬂavin reductase family pdf

Ngày tải lên : 07/03/2014, 02:20

... determine the unique functions of these avin proteins? In this study, we present the crystal structure of DvMF avoredoxin and discuss the key residues for ligand binding and metal ion binding, ... avin-binding domain of ferredoxin : NADP+ reductase [10] The lysine residue is not conserved; instead, an arginine residue interacts with the FAD molecule of the enzyme In the case of FMN-binding ... reductase and avin reductase activities FeR and Fre activity were examined using avoredoxin, DrgA [13] and FMN-binding protein [14] DrgA from Synechocystis sp PCC6803 and FMN-binding protein from...

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Báo cáo khóa học: Localization, puriﬁcation and properties of a tetrathionate hydrolase from Acidithiobacillus caldus pot

Ngày tải lên : 07/03/2014, 14:20

... band when stained by GelCode Blue Stain Reagent and SilverXpress Silver Staining Kit in SDS gel electrophoresis (Fig 1) Isoelectric focusing in the 2D gel detected a single spot and the pI of ... distributed in continuous ﬂow biooxidation tanks used to treat a variety of metal containing ores and concentrates In Biohydrometallurgy and the Environment Toward the Mining of the 21 St Century ... of the high NaCl concentration (1 M) Most of the remaining proteins in the extract did not bind to the cation exchange resin in the presence of NaCl and tetrathionate hydrolase was then eluted...

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Báo cáo khoa học: Origin and properties of cytoplasmic and mitochondrial isoforms of taurocyamine kinase pptx

Ngày tải lên : 07/03/2014, 21:20

... (taurocyamine kinase, TK), phospholombricine (lombricine kinase, LK), phosphoopheline (opheline kinase, OK), phosphohypotaurocyamine (hypotaurocyamine kinase, HTK) and phosphoarginine (arginine kinase, ... (30% of that of taurocyamine) and glycocyamine (7% of that of taurocyamine) Recombinant Arenicola MiTK was incapable of phosphorylating creatine even though this TK has a higher degree of sequence ... alignment of Fig (arrow b) is strictly conserved in each of phosphagen kinases, namely Arg in CK, Ile in GK, Tyr in AK and Lys in LK While this residue is not directly involved in substrate binding in...

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Báo cáo khoa học: Puriﬁcation and properties of a new S-adenosyl-Lmethionine:ﬂavonoid 4¢-O-methyltransferase from carnation (Dianthus caryophyllus L.) pot

Ngày tải lên : 08/03/2014, 08:20

... mL of a 0–0.15 M linear gradient of NaCl in buffer C, at a flow rate of mLÆmin)1, collecting mL fractions The F 4¢-OMT-containing fractions were pooled, desalted through dialysis and the obtained ... plot of inhibition kinetic of AdoHcy The obtained experimental data at increasing inhibitor Ó FEBS 2003 3428 P Curir et al (Eur J Biochem 270) Table Kinetic parameters of S-adenosyl-L-methionine:flavonoid ... of inhibition kinetic of S-adenosyl-Lhomocysteine (AdoHcy) Lineweaver–Burk plot of 1/v vs 1/[s] (where s ¼ kaempferol) in the presence of different fixed concentrations of S-adenosyl-L-methionine...

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Báo cáo Y học: Molecular cloning, bacterial expression and properties of Rab31 and Rab32 docx

Ngày tải lên : 08/03/2014, 16:20

... of low-Mr GTP-binding proteins, in that in addition to the DXXG sequence present in the cloning primer, they encoded the GXXXXGK(S/T), NKXD and EXSA amino-acid residues also involved in binding ... Blue-stained gel showing 10 lg of platelet protein and 0.5 lg of GST and GST±Rab proteins; (B) an [a-32P]GTP overlay [17] of a nitrocellulose blot of a gel containing 40 lg of platelet protein, 0.5 ... 0.5 lg of GST and 0.5 lg of GST±Rab proteins, except for GST±Rab5A (0.1 lg); (C) an immunoblot of a gel containing 20 lg of platelet protein and 0.1 lg of GST and GST±Rab proteins, using a :...

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Báo cáo "Preparation and characteristics of the In-doped ZnO thin films and the n-ZnO:In/p-Si heterojunctions for optoelectronic switch" potx

Ngày tải lên : 14/03/2014, 13:20

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Preparation and photoluminescence of high density siox nanowires with fe3o4 nanoparticles catalyst

Ngày tải lên : 16/03/2014, 15:11

... temperatures of 1100 and 1200 °C The composition analysis of the products was achieved using EDS Fig 2(d) shows EDS spectrum of the nanowires, indicating that the products only consist of silicon and ... the TEM image X-ray diffraction is used to obtain structure information of Fe3O4 nanoparticles, as shown in Fig 1(b) It indicated the highly crystalline cubic spinel structure was detected from ... uniformly covered on the surface of Si(111) substrate, as illustrated in Fig 2(a) and (b) The lengths of these nanowires are in the range of several tens to hundreds of micrometers Fig 2(c) shows...

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Mechanics and Properties of Composed Materials and Structures doc

Ngày tải lên : 16/03/2014, 22:20

... effects of masonry, reinforced concrete and soil, such as yielding in compression, cracking in tension, opening and closing of cracks, tensile and shear stress of cracking material, etc The macro and ... determined for various types of masonry and load types In case of shear failure of the masonry in a certain integration point, i.e when sx;y [ sh , Gm = is adopted m;g 3.2.3 Micro Model of Masonry ... yielding and crushing in compression, the soil cracking in tension, anisotropic soil properties and other nonlinear soil effects according to Sects 3.1 and 3.2 3.5 Modelling of the Strain Rate...

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Báo cáo Y học: Trehalose-phosphate synthase of Mycobacterium tuberculosis Cloning, expression and properties of the recombinant enzyme pdf

Ngày tải lên : 17/03/2014, 10:20

... describe the cloning and expression of the M tuberculosis tps gene in E coli, and the production of active TPS in these cells The properties of the recombinant enzyme have been determined, and are compared ... (Novagen) in the absence of IPTG HMS-F was routinely cultured in the presence of 10 lgÆmL)1 tetracycline to maintain carriage of the F episome E coli strains were cultured in L-broth and on L-agar ... electroporated into the E coli strain HMS-F [29] The resulting ampicillin- and tetracycline-resistant transformant was cultured with and without IPTG, and expression of a (His)6-tagged protein of the...

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