structural properties of pure and binary nanoclusters investigated by computer simulations

Tài liệu Báo cáo khoa học: Interleukin-1-inducible MCPIP protein has structural and functional properties of RNase and participates in degradation of IL-1b mRNA doc

Ngày tải lên : 18/02/2014, 14:20

... activated by LPS, TNFa and phorbol 12-myristate-13-acetate (PMA) Moreover, we found that MCPIP has RNase properties and regulates the half-life of IL-1b mRNA and its own transcript Overexpression of ... downregulation of the IL-1b transcript and silencing of MCPIP gene expression has an opposite effect on the IL-1b mRNA level RNase properties of MCPIP are exerted by the PIN domain, as shown by experiments ... clarify the dynamics and features of this protein Role of MCPIP in regulation of the endogenous IL-1b transcript level After identiﬁcation of a PIN domain in the MCPIP by use of bioinformatics,...

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structural and photocatalytic properties of iron- and europium-doped tio2

Ngày tải lên : 20/03/2014, 13:08

... catalyzed by Fe- and Eu-doped and codoped TiO2 semiconductor, and the surface hydroxyl species of the catalyst The next step is the hydroxylation of the phenyl ring, followed by further oxidation of ... reported by Zhu et al [25] in Fe-doped anatase samples, being explained by changes of the Ti O Ti bond angles after the Ti substitution by Fe Europium environment in the sample TFE was investigated by ... that of TiO2 , suggesting similar Fe and Ti surroundings in the doped and undoped samples In order to verify this statement, the ﬁltered EXAFS of L Diamandescu et al / Materials Chemistry and...

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synthesis and optical properties of au-ag alloy nanoclusters with controlled composition, p26

Ngày tải lên : 04/06/2014, 15:20

... Ag and Au have been a subject of considerable interest; and the developed of simple and versatile methods for controlling the composition and structure of Au-Ag nanoparticles is an important and ... coefficients an and bn, and are function of particle radius, and light wavelength λ (in terms of the Ricatti-Bessel functions) As the absorption band of noble metal nanoparticles is dominated by the free ... concentration of the alloy Au x Ag x −1 in g cm-3, and f is a constant which depends on the average bulk density ρ of the alloy, and given by: f = 4πρ (2) In table 1, the concentrations of each of the...

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Báo cáo y học: "All motifs are not created equal: structural properties of transcription factor - dna interactions and the inference of sequence specificity" doc

Ngày tải lên : 14/08/2014, 14:21

... recognized by members of structurally similar transcription factors We propose that our structural and biochemical understanding of the interactions between transcription factors and DNA can ... information profile We note that MEME and several other motif detection algorithms already implement one type of structural constraint imposed by specific structural characteristics of a class of transcription ... relationship between the structural footprint of a protein on DNA and the information profile of the PWM that describes sequences bound by this protein is, in some ways, fairly obvious and has been indirectly...

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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 1

Ngày tải lên : 14/09/2015, 14:10

... phase/dopants, stress, duration of its application and temperature, and crystal defects To minimize and control the level of defects and contaminants without sacrificing material properties is the major ... Study of microstructures and mechanical properties of Mg MMCs at different ball milling durations Investigation of the deformation behavior of Mg-5wt%Al-1wt%AlN systems Introduction 1.3 Scope of ... techniques consisting of mechanical consolidation, sintering and extrusion Mechanical testing however often exhibits controversial results and the understanding on deformation behavior of fine grained/nc...

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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 2

Ngày tải lên : 14/09/2015, 14:10

... wet milling, temperature of milling, atmosphere in the mill and finally, the duration of milling The kinetic energy of the balls changes with speed of milling and mass of balls [111-114] The higher ... strength of MMed materials However, the amount of impurity increases with milling time, leading to degradation of overall combination of mechanical properties Consolidation of the fine powders and ... enhancement of the thermodynamic driving force through reduction in length scale and possible breaking of the bonds and the kinetics of mass transport by 37 Literature Review introducing structural...

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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 3

Ngày tải lên : 14/09/2015, 14:10

... 40h of milling and a certain amount of released N reacted with Al with the evidence of weak and broad AlN peaks The proportion of AlN in the powder increased with further milling Higher and distinct ... melt of residual Al in the milled samples MMed powders annealed at 1250°C are composed of both particles and whiskers of AlN Majority of whiskers in the 20h- and 30h-MMed-1250 samples are long and ... generated by the nitridation [22] (a) (b) Figure 3.1 (a) Morphology of Al powder and (b) structure of pyrazine In this study, in-situ formed AlN composite powder is obtained by milling the mixture of...

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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 4

Ngày tải lên : 14/09/2015, 14:10

... resistivity of Mg-5Al-1AlN composite sample and pure Mg samples 4.3.3 Thermal properties From Table 4.3 and Fig 4.8, the same trend of αc and αMg is observed for both composite and pure Mg samples ... 5% and 88 Processing, physical and tensile properties 9% after 10h and 20h-MM Further milling to 30h and 40h interestingly shows lower YS of 334 MPa and 205 MPa with enhanced ductility of 28% and ... physical and tensile properties Setaram TMA 92-16.18 was employed to investigate the nature of thermal expansion of the samples by means of coefficient of thermal expansion (CTE) Thermal behavior of...

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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 5

Ngày tải lên : 14/09/2015, 14:11

... effects on pure Mg milled for the durations of (a) 0h, (b) 10h, (c) 20h, (d) 30h and (e) 40h 115 Effects of strain rate on tensile properties Table 5.2 Yield strength and % elongation of pure Mg ... phenomenon is one of the unique properties of nanostructured materials and it has been reported by previous studies [29] This phenomenon indicates the involvement of a dynamic process in terms of material ... strain rate of 3.33x10-5 s-1, the YS of 0h-MMed sample was comparable to that of 30h-MMed sample and higher than that of 40h-MMed sample However, in terms of ductility, the 30h- and 40h-MMed...

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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 6

Ngày tải lên : 14/09/2015, 14:11

... emission and/ or absorption of vacancies by grain boundaries and (ii) diffusion of emitted vacancies via the grain boundaries 142 Investigation of time dependent deformation behaviors by creep ... coordinates of  and  is shown in Fig 6.1 The relationship between stress and creep strain rate is not linear at different temperatures Two outstanding features of the influence of particles ... Investigation of time dependent deformation behaviors by creep test sinks and sources of vacancies [32] Therefore, the rate of total energy dissipated as heat can be equated to that of energy dissipated...

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Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 7

Ngày tải lên : 14/09/2015, 14:11

... rate sensitivity factors of 0.087 and 0.106, and unusually small apparent activation volume of 41b3 and 34b3 are observed from the 40h-MMed composite and the 40h-MMed pure Mg samples respectively ... 30hMMed composite exhibited the best combination of strength and ductility Time dependence of mechanical properties of both material systems is verified by tensile tests at three different strain rates, ... essential In the case of nc materials, this type of information may be obtained by (a) conducting creep tests over a wide range of strain rates (at least five orders of magnitude) and at several temperatures...

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$Functional and structural properties of molecular soy protein fractions$

Functional and structural properties of molecular soy protein fractions

Ngày tải lên : 16/09/2015, 08:30

... and isoflavone content of 11S CHAPTER The aggregation profile of 2S, 7S and 11S 100 coagulated by glucono-δ-lactone (GDL) CHAPTER The functional and structural properties of 2S soy 117 protein ... during the extraction of 11S caused the 11S to have higher level of isoflavone, better foaming properties and formed harder gels I The functional and structural properties of 2S soy protein in ... properties of food proteins: effects of reduction of disulfide bonds on film properties and foam stability of glycinin Journal of Food Science 1987, 56, 242-258 27) Kinsella, J E Functional properties...

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$Application of Hydrothermal Reaction to Biodegradability Improvement of Refractory Pollutants: Structural Conversion of Di- and Trichloroacetic Acid to Biodegradable Products$

Application of Hydrothermal Reaction to Biodegradability Improvement of Refractory Pollutants: Structural Conversion of Di- and Trichloroacetic Acid to Biodegradable Products

Ngày tải lên : 05/09/2013, 08:40

... Effect of reaction time on the content change of products from DCAA and TCAA by o hydrothermal reaction at 250 C and MPa Journal of Water and Environment Technology, Vol.1, No.2, 2003 acid, % of ... controlled by various characteristics of water at the specific temperatures and pressures o Table Change of water quality indexes of di- and trichloroacetic acid by hydrothermal reaction at 250 C and ... biodegradability of CAAs regardless of the number of attached chlorine atoms The purposes of this research are to investigate the effect of the number of attached chlorine atoms on the reaction mechanism of...

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Tài liệu PHYSICAL, CHEMICAL, AND MECHANICAL PROPERTIES OF BAMBOO AND ITS UTILIZATION POTENTIAL FOR FIBERBOARD MANUFACTURING docx

Ngày tải lên : 22/02/2014, 09:20

... utilization The physical and mechanical properties of bamboo vary with the age of the bamboo and the height of the culm [Chauhan 2000] In general, SG and the properties of bamboo drop from the ... bending properties, along longitudinal and radial directions of one, three, and five year old bamboo and determine the correlation between SG and bending properties, and (5) compressive strength of ... on the utilization of bamboo fibers to MDF This chapter investigated the effects of age of bamboo fibers and the resin content level on the physical and mechanical properties of the manufactured...

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Báo cáo khóa học: Structural properties of the protein SV-IV potx

Ngày tải lên : 07/03/2014, 14:20

... Amino-acid sequence and secondary-structure predictions performed with PHD, JPRED, and PSIPRED (see Materials and methods) a-Helix is indicated by H and b-strand conformation is indicated by E present ... observed and identiﬁed by the mass increase of 42 mass units The relative level of acetylation of a peptide was estimated on the basis of the intensity ratio of the native and acetylated species ... 45 55 34 or 39 34 and 39 78 or 79 or 80 78, 79 and 80 Ó FEBS 2003 Structural properties of SV-IV (Eur J Biochem 271) 269 Fig MALDI-TOF mass spectrum in postsource decay mode of the peptide at...

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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

... mitochondrial isoform (referred to henceforth as MiTK) as described below The cDNA for the cytoplasmic TK consists of 1811 bp with an ORF of 1098 bp and 5¢ and 3¢ untranslated regions of 21 and 692 bp, ... (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 mitochondrial targeting sequences of vertebrate and invertebrate MiCKs and Arenicola MiTK Sequences correspond to ubiquitous (uMiCK) and sarcomeric (sMiCK) MiCKs from man and chicken and...

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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

... 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 lg of GST and 0.5 lg of ... form of Rab32 (see Discussion) Fig Puri®cation and properties of wild-type and mutant Rab31 and Rab32 expressed as GST±fusion proteins Samples of platelet particulate fraction protein and of puri®ed ... melanocytes and named Rab22B [25] The coding sequence of the latter differed by two nucleotides and one amino-acid residue from that Fig Alignment of the deduced amino-acid sequences of Rab31 and Rab32...

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Báo cáo khoa học: Stability and ﬁbril formation properties of human and ﬁsh transthyretin, and of the Escherichia coli transthyretin-related protein potx

Ngày tải lên : 16/03/2014, 01:20

... both in shape and in dimension to the fibrils of hTTR and sbTTR formed by heating The thick and straight morphology of heat-induced fibrils of hTTR, sbTTR and ecTRP is similar to that of amyloid fibrils ... that of TTRs and TRPs (Fig 1) In the current study, the fibril-forming and amyloidforming properties of three representatives from the TTR and TRP families were investigated Amyloidogenic properties ... fibril-forming properties of sbTTR and ecTRP in vitro, and compared the results with those of hTTR Our results showed that hTTR, sbTTR and ecTRP can form fibrillar structures, but under different solution and...

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First principles optical properties of silicon and germanium nanowires

Ngày tải lên : 16/03/2014, 15:33

... EMA models Optical properties of SiNWs and GeNWs In Section of the present paper, we aim to point out the importance of the many-body effects on the optical response of some of the studied nanowires ... in terms of the different geometrical structure of wires grown with different orientation Finally the comparison of the optical spectra of SiNWs and GeNWs with diameters of the order of 0.8 nm, ... Scaling of the DFT-LDA gap in SiNWs (left) and GeNWs (right) as a function of wires’ size and orientation Table DFT-LDA electronic gaps in SiNWs and GeNWs are reported, respectively, in the third and...

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The properties of gases and liquids, fifth edition poling, prausnitz, o’connell

Ngày tải lên : 17/03/2014, 14:01

... temperature and density The correlation of a and b in terms of other properties of a substance is an example of the use of an empirically modified theoretical form Empirical extension of theory can often ... scientists and engineers often require the properties of gases and liquids The chemical or process engineer, in particular, finds knowledge of physical properties of fluids essential to the design of many ... THE PROPERTIES OF GASES AND LIQUIDS CHAPTER ONE THE ESTIMATION OF PHYSICAL PROPERTIES 1-1 INTRODUCTION The structural engineer cannot design a bridge without knowing the properties of steel and...

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