contamination by crude oil and oil by products
Enzymes in the Environment: Activity, Ecology and Applications - Chapter 19 pot
Ngày tải lên :
11/08/2014, 15:20
... detoxification of polluted soils Ruggiero et al (210) and Gianfreda and Bollag (211) evaluated the capability of free and immobilized laccase and peroxidase to detoxify soils polluted by 2,4-dichlorophenols ... U Mingelgrin, Y Henis Parathion degradation by a Pseudomonas sp and a Xanthomonas sp and by their crude enzyme extracts as affected by some cations Soil Biol Biochem 25:1665–1671, 1993 25 WW Mulbry, ... naphthalene, anthracene, fluorene, phenanthrene) Soil Soil, water summarizes some of the more common pollutants of soil and water and lists their potential origins and possible locations in the environment...
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Biochemical characterization of thermophilic lignocellulose degrading enzymes and their potential for biomass bioprocessing
Ngày tải lên :
05/09/2013, 16:11
... (filer paper), BWX and PWSD The enzyme kinetic studies for cellulase and xylanase (Km and Vmax) were performed with 1-10 mg/ml of CMC and BWX, respectively [35] The crude cellulase and xylanase were ... degradation and conversion for sustainable production of bioenergy and highvalue products; enzyme production and catalysis, bioremediation and biorefineries Lew is the author of patents and over ... cellulose- and xylan-degrading enzymes from a thermophilic microbial consortium obtained by enrichment of yard waste compost as a source Materials and methods 2.1 Chemicals and reagents All chemicals and...
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Báo cáo khoa học: Crystal structure of RNase A tandem enzymes and their interaction with the cytosolic ribonuclease inhibitor potx
Ngày tải lên :
22/03/2014, 16:21
... entities and thus allow evaluation of their activity loss by RI binding in the complex In fact, cleavage by trypsin occurred exclusively within the linker sequence (Fig 5), and the cleavage products ... internalization into the cells [20], and potentially impedes binding by RI Despite their clear cytotoxic action and their dimeric structure, however, RATEs were inhibited by RI in vitro at concentrations ... (residues 51–57), a b-strand (residues 61–63) and a loop region (residues 75–79) of the N-terminal entity, and a-helix I¢ (residues 4¢–12¢), a loop region (residues 13¢–18¢) and the end of a-helix...
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classes of groups and their properties
Ngày tải lên :
12/05/2014, 01:59
... formations and projectors by interchanging the roles of normal subgroups and quotients groups From this point of view the closure operations Sn and N0 are the natural duals of Q and R0 , and so a ... F-residual of G and 2.2 Formations: Basic properties and results 95 it is denoted by GF Clearly GF is a characteristic subgroup of G and GF = {N G : G/N ∈ F} Consequently GF = if and only if G ... the first and third properties leading to the theory of saturated formations and Schunck classes and the associated projectors and the second property to the theory of Fitting classes and injectors...
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Báo cáo hóa học: " Hydrothermally Grown ZnO Micro/Nanotube Arrays and Their Properties" pptx
Ngày tải lên :
22/06/2014, 00:20
... of 50 ml A zinc foil after ultrasonic treatment was then put into the autoclave After sealed, the autoclave was put in an oven and heated at 130°C for h After reaction, the foil was taken out ... reaction, the foil was taken out of the autoclave and washed with water for several times and then dried in air X-ray diffraction (XRD) pattern of the products was carried out on a D/max-rB of Kaisha ... already been observed for several materials, such as ZnO and ZnS [13, 41] The crystal structure of the products was also investigated using XRD and the pattern is shown in Fig In this pattern, all...
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COMPOSITES AND THEIR PROPERTIES ppt
Ngày tải lên :
28/06/2014, 10:20
... and Construction Influence on the Tire Safety 265 Pavel Koštial, Jan Krmela, Karel Frydrýšek and Ivan Ružiak Chapter 14 Friction and Wear of Polymer and Composites Dewan Muhammad Nuruzzaman and ... functional and structural nanocomposites, numerical and theoretical modelling of various damages in textile and long fiber reinforced composites, design, processing and manufacturing technologies and ... breaker construction and rubber blend Chapter 14 Friction and Wear of Polymer and Composites In this chapter, friction coefficient and wear rate of different types of polymer and composite materials...
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Enzymes and Their Inhibition ppt
Ngày tải lên :
02/07/2014, 11:20
... John Smith and Claire Simons Cardiff Univeristy Cardiff, UK Carbonic Anhydrase: Its Inhibitors and Activators Edited by Claudiu T Supuran, Andrea Scozzafava and Janet Conway Enzymes and Their ... Edited by H John Smith and Claire Simons © 2005 by CRC Press TF1766_title 7/22/04 2:53 PM Page CRC Enzyme Inhibitors Series Enzymes and Their Inhibition Drug Development Edited by H John Smith and ... Example W Edward Lindup and Neil R Kitteringham 2.6 Carbonic Anhydrase Example Claudiu T Supuran, Andrea Scozzafava, and Angela Casini 2.7 Proteases Example André J Niestroj and Hans-Ulrich Demuth...
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Discovery of lipid enzymes and their modulators using metabolite profiling of yeast (saccharomyces cerevisiae) mutants
Ngày tải lên :
04/10/2015, 16:03
... Methanol (1:1) mix was added and vortexed for 30 sec followed by incubation for 30 sec This step was followed by the addition of 400 µL of Chloroform and 300 µL of 1M HCL and vortexed for 30 sec The ... being a good friend and helping me ever so often Xue Li for her expert assistance and comments Sravan for his advice and suggestions I am also indebted to Dr Robert Yang and all his lab members ... Sub cloning YBR042C and expression in YBR042C null mutant 23 2.6.1 Genomic DNA isolation 23 2.6.2 24 2.6.3 Restriction digestion of PCR products and vector Ligation of vector and Insert 2.6.4 Transformation...
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Báo cáo khoa học: Enzymes of mannitol metabolism in the human pathogenic fungusAspergillus fumigatus– kinetic properties of mannitol-1-phosphate 5-dehydrogenase and mannitol 2-dehydrogenase, and their physiological implications pot
Ngày tải lên :
14/03/2014, 23:20
... kox and kred are kcat values for alcohol oxidation and ketose reduction; KiNADH and KiNAD are dissociation constants for NADH and NAD+; and KmRO and KmROH are Michaelis constants for ketose and ... of substrate and coenzyme in each direction of the reaction catalyzed by AfM2DH By way of comparison, an earlier study on M1PDH from A niger also reported random binding of NAD+ and Man-ol1P ... binding Discussion Kinetic mechanism of Af M1PDH and Af M2DH The theory developed by Cook and Cleland is used to deduce the kinetic mechanism of AfM1PDH and AfM2DH from KIE data in Table [28] The pattern...
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Tài liệu Materials, Their Properties and Uses doc
Ngày tải lên :
13/02/2014, 09:20
... crushing quartz and used for sandpaper The chief types of abrasive sand include sandblast sand, glass-grinding sand, and stone-cutting sand Sand for stone sawing and for marble and glass grinding ... are sand tailings from the Missouri lead ores, used for sawing stone Banding sand is used for the band grinding of tool handles and for the grinding of plate glass, but is often replaced by artificial ... nitrocellulose and cellulose acetate, for gums and resins, in lacquers and thinners, and in ink, paint, and varnish removers Because of its low freezing point and miscibility with castor oil it is...
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Báo cáo khoa học: Crystal structure and enzymatic properties of a bacterial family 19 chitinase reveal differences from plant enzymes pdf
Ngày tải lên :
07/03/2014, 11:20
... extended towards Cys183 in ChiC (and in the plant enzymes) Compared to the barley enzyme, ChiC and ChiG lack three loops (A, B and C) and a C-terminal extension (Figs and 4B) In addition, one other ... to His67 ⁄ Glu182 and Asp184 in molecule A and His67 ⁄ Glu182 and Asp137 in chain B, originally modeled as waters, were replaced by zinc ions, based on the refined B-values and residual peak heights ... experiments and helpful discussions, and May Bente Brurberg and Svein Horn for helpful discussions The authors acknowledge the beamline staff at ID14-EH3 for technical assistance, and the ESRF and the...
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Báo cáo Y học: Properties of group I allergens from grass pollen and their relation to cathepsin B, a member of the C1 family of cysteine proteinases pdf
Ngày tải lên :
08/03/2014, 22:20
... followed by 20 cycles consisting of 95 °C for 30 s, 70 °C for and 72 °C for min; and terminated by an extension step for at 72 °C The reaction mixture consisted of 10 ng template DNA, 0.5 mM dNTPs and ... identity between Hol l and CP2 was 22%, between Phl p and CP1 as well as CP3 19%, and between Phl p and CatB 15% Moreover, the putative active-site amino acid Cys72 of Phl p and Hol l is very ... cysteine residues and other essential amino acids are numbered Areas of high similarity exist around Cys69 and Cys72 and around Trp186, Trp193 and Trp197 The positions of Cys41, 57, 69 and 72 are especially...
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STAINLESS STEELS their properties and their suitability for welding
Ngày tải lên :
14/03/2014, 12:21
... seawater-bearing systems and the offshore industry COMPOSITION AND MECHANICAL PROPERTIES The mechanical properties, corrosion resistance and weldability of a steel are largely determined by its microstructure ... consideration by both designer and welder The high thermal expansion and low thermal conductivity of the austenitic steels lead to higher shrinkage stresses in the weld than when carbon and ferritic ... stainless steel by causing pitting and crevice corrosion However, two stainless steel grades designed to cope with this environment have been developed by AvestaPolarit, 254 SMO (ASTM S31254) and 654...
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Materials, Their Properties and Uses potx
Ngày tải lên :
14/03/2014, 16:20
... crushing quartz and used for sandpaper The chief types of abrasive sand include sandblast sand, glass-grinding sand, and stone-cutting sand Sand for stone sawing and for marble and glass grinding ... are sand tailings from the Missouri lead ores, used for sawing stone Banding sand is used for the band grinding of tool handles and for the grinding of plate glass, but is often replaced by artificial ... nitrocellulose and cellulose acetate, for gums and resins, in lacquers and thinners, and in ink, paint, and varnish removers Because of its low freezing point and miscibility with castor oil it is...
- 1.1K
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facile route to straight sno2 nanowires and their optical properties
Ngày tải lên :
19/03/2014, 16:48
... clearly indicates that these nanowires are of uniform size and smooth surface, and the average diameter and length of these nanowires are 80 nm and m, respectively The energy dispersive X-ray spectroscopy ... single crystalline and grows along [12-1] direction, which is different from common [1 1] and [1 0] growth direction [26,27] No obvious defects and dislocations are observed, and the interplanar ... decomposed into Sn and SnO vapor Sn and SnO vapor subsequently are transported to low temperature zone and form liquid droplets The liquid droplets gradually absorb oxygen and are further oxidized...
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Tensile properties of cooked meat sausages and their correlation with texture profile analysis (TPA) parameters and physico chemical characteristics
Ngày tải lên :
05/05/2014, 08:43
... mortadella and galantines) from different commercial brands were purchased in retail shops in Spain The 24 samples were 691 bought three times (January, May and October) maintaining brands and meat ... content of the samples was determined by cold extraction in chloroform and methanol in the presence of antioxidant BHT as described by Hanson and Olley (1963) and was quantified gravimetrically Results ... behaviour between profiles and with similar (p > 0.05) values of BS and hardness to textural profile 1, and similar values (p > 0.05) of cohesiveness and springiness to profile 3, and intermediate values...
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Báo cáo hóa học: " A systematic review of mobility instruments and their measurement properties for older acute medical patients" doc
Ngày tải lên :
18/06/2014, 22:20
... person hands-on, person standby, independent with aid, independent BALANCE: impaired static sitting, stable static sitting, stable dynamic sitting, stable static standing, stable dynamic standing, ... multiple stands from chair, standing balance, step-up and ambulation Approximately 10 minutes [29] 8.6 minutes (SD = 3.6 minutes) [41] A bed, chair, stop watch, standardised step and gait aid ... identified by a significant and high correlation between PPME scores and other measures of physical function Discriminant validity was indicated by a low correlation between PPME scores and measures...
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Báo cáo hóa học: " Surface properties of glass micropipettes and their effect on biological studies" pot
Ngày tải lên :
21/06/2014, 03:20
... parameters and Dt and Sa As it can be seen from Figures 3, 4, 5, and 7, velocity has the most significant effect A small increase in velocity significantly decreases Dt and Sa The effects of pull and ... ATP, mM GTP, 10 mM HEPE, and at 7.2 in pH, and the bath solution was composed of 110 mM NaCl, mM KCl, mM MgCl2, mM CaCl2, mM HEPEs, mM HEPE-Na, and at 7.2 in pH Results and discussion Over 20 pipettes ... any tendency of orientation and is not affected by pulling direction The fact that both the pipette tips and pipette inner walls are rough may help better understanding of the mechanism of applications...
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Báo cáo hóa học: " Review of thermo-physical properties, wetting and heat transfer characteristics of nanofluids and their applicability in industrial quench heat treatment" pot
Ngày tải lên :
21/06/2014, 04:20
... warpage and quench cracks [6] On the other hand, convective cooling in oil is less intensive due to relatively high viscosity and lower heat capacity A variety of different quenching oils tend ... 0.05 1.116 Spherical and square [19] Not available 0.05 1.036 - 130-200 75-100 0.05 0.1 1.085 1.238 Spherical and square Spherical and square 50-100 0.1 1.238 Spherical and square 100-300 0.1 ... the temperature and the volume fraction dependence of the thermal conductivity of nanofluids for both non-flowing and flowing fluids [57] Murugesan and Sivan developed lower and upper limits...
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Báo cáo hóa học: " Fe3O4–Au and Fe2O3–Au Hybrid Nanorods: Layer-by-Layer Assembly Synthesis and Their Magnetic and Optical Properties" pptx
Ngày tải lên :
21/06/2014, 07:20
... adsorption and desorption isotherms of FeOOH nanorods (c) before layer -by- lay assembly and (e) after layer -by- lay assembly at 77 K with corresponding pore-size distribution calculated by BJH method ... assembly and (curve b) after layer -by- lay assembly; nitrogen adsorption and desorption isotherms of FeOOH nanorods c before layer -by- lay assembly and e after layer -by- lay assembly at 77 K with corresponding ... and pore volume analysis were examined to confirm the successful surface modification of PAH/PSS/ PAH by the layer -by- layer technique As shown in Fig 2a, b, the additional peaks at 1008, 1035 and...
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