Báo cáo vật lý: "EFFECT OF FIELD STRENGTH IN THE VELOCITY ANISOTROPY OF FERROFLUIDS" pptx

... All the observations are interpreted in terms of grain-grain interaction and grain -field interaction that exist in the system. The field strength is found to enhance the structural formation in ... depending on the evolution of the aggregates with increasing strength of the external magnetic field. 26, 27 Under the effect of an external magnetic field, the particles of the ferrofluid ... to the external field suggests that the grain -field interaction is strong.20 However, the grain-grain interaction is almost the same as the number of grain remains constant and also the...

Báo cáo vật lý: "Effect of Temperature on Corrosion Behavior of AISI 304 Stainless Steel with Magnesium Carbonate Deposit" docx

... by a decrease in mass loss up to 72 h. Then further increase in time has resulting an increased in mass. The effect of temperature on the corrosion behavior of AISI 304 stainless steel with ... 1000oC for 24–120 h. The results indicated that the initial carbonate coating caused acceleration in oxidation, resulting in the formation of scales, followed by the decreased in oxidation rate ... be headed by a title, the initial(s) and surname(s) of author(s) and the address of the author(s). The title and abstract should be combined on one page. The title of the article should not...

Báo cáo vật lý: "Effect of Blowing Agent Concentration on Cell Morphology and Impact Properties of Natural Rubber Foam" ppt

... at the lowest point of the cure curve.7 The results indicate that the blowing agent concentration did not affect the compound viscosity prior to crosslinking. It can also be seen that as the ... efficient solvent in most polymers; the gas molecules accumulate interstitially between the polymer chains, thus increasing the free volume and mobility of the chain. Journal of Physical Science, ... designed software. The obtained data can be used to calculate the velocity, kinetic energy, and the absorbed energy, using the following equations: txv = (8) where v, x, and t are the velocity, ...

Báo cáo vật lý: "Effect of Filler Incorporation on the Fracture Toughness Properties of Denture Base Poly(Methyl Methacrylate)" pptx

... in the material. The aim of the present study is to investigate the possibility of using barium titanate (BaTiO3) as a radiopacifier in PMMA. The formulation used in this study composed of ... of the silane coupling agent, causing a filler-matrix debonding.13 In addition, the SBF molecules can be accommodated at the interface between the filler and the matrix through a weak link. ... to the longevity of the material. Should a bond failure occur between the filler and the matrix, as it may occur in an aqueous environment, the strength of the composite will decrease. The finding...

Báo cáo vật lý: "Effect of Treated and Untreated Filler Loading on the Mechanical, Morphological, and Water Absorption Properties of Water Hyacinth FibersLow Density Polyethylene Composites" pdf

... improved the interfacial bonding. The molar sorption of the composites increased with increasing fiber loading. The uptake of water was due to the increased cellulose content. In the presence of ... as the fiber loading increased, the tensile strength was increased to the point of being comparable to that of pure LDPE. The presence of a coupling agent improved the mechanical properties of ... that as the filler loading reached 25 phr of the total weight of the LDPE, the tensile strength of the composite was comparable to that of pure LDPE. The effect of having a coupling agent...

Báo cáo khoa học: Nanoparticles can induce changes in the intracellular metabolism of lipids without compromising cellular viability docx

... modulate the expression of proteinsinvolved in the retention of lipids in LDs, such as lip-ases or other LD-associated proteins. We have shownthat at least one of these mechanisms is implicated in lipid ... storage in LDs. The PI3K ⁄ Akt signaling pathwaystimulates lipogenesis via SREBP-1. FAS is the enzyme responsiblefor the synthesis of palmitate, the precursor of FFAs. The inhibition of signaling ... [52]. Therefore, NPs mayinduce the accumulation of lipids in PC12 cells bydisturbing the function of cellular membranes on the cell surface, as well as by disturbing cellular functionsinside the...

Báo cáo khoa học: C ﬁ G base mutations in the CArG box of c-fos serum response element alter its bending ﬂexibility Consequences for core-SRF recognition potx

... the point of view of enthalpy, but unfavored from the point of view of entropy. A 25 °C, the higher entropy of the linearform is likely due to its higher ﬂexibility, the highermobility of the ... cm)1at 25 °C of about the sameintegral intensity, indicating a larger population of lin-ear conformers. The upshift and increase in intensity of the peak at 838 cm)1suggest that the backboneconformation ... for the 70° sharp bend induced in the HMG box seems very interesting. Indeed, the bend determined by Raman for the free SREfos in solution is roughly similar to that formed in SREfos in the...

Báo cáo khoa học: Key substrate recognition residues in the active site of a plant cytochrome P450, CYP73A1 ppt

... residue in the initial binding and correctpositioning of CA during catalysis. A role of N302 in anchoring the side-chain carboxylate of CA is furthersupported by the enhanced binding of amine substitutedligands ... mutagenesis of the involve-ment of some of these residues in the docking and catalysis of cinnamic acid. The impact of the active site mutations on the binding and metabolism of cinnamic acid ... Mutation of all arginines led to a signiﬁcant loss in protein stabilitysuggesting that they are involved in protein fold structurerather than binding of the substrate. The overall picture of the CYP73A1...

Báo cáo khoa học: A novel phosphorylated glycoprotein in the shell matrix of the oyster Crassostrea nippona pptx

... layers of pearloysters, leaving the other shell layers poorly investi-gated at the molecular level. One exception is the ﬁnd-ing of acidic glycoprotein MSP-1 in the foliated layer of Patinopecten ... those of the above-men-tioned fragments, A, B and C. After addition of the remaining sequences, namely approximately 100 bp of the 5¢-region and 110 bp of the 3¢-region, the fulllength of the ... investigation of the frac-tionation and functional analysis of the OM compo-nents highlighted the inhibitory activity of the OMagainst crystal formation in vitro. Immunocytochemicalstudies of the OM in...

Báo cáo sinh học: " Imperfect DNA mirror repeats in the gag gene of HIV-1 (HXB2) identify key functional domains and coincide with protein structural elements in each of the mature proteins" doc

... functionalmotifs in the protein. The highest levels of symmetrydelineate essential functional sites in the protein. Analysis of the distribution of IMRs in the Gag polyprotein indi-cates that the gene ... the overlap. The Cys-His boxes are zinc finger binding domains which ena-ble NC to bind to nucleic acids, and the Zn ion increases the affinity of NC for nucleic acids; NC also has unwind-ing ... in TnsA. The position atwhich the coincidence is maximal is listed in Table 6. The coincidence of IMR and PSE at position 0 indicates that the span of a PSE exactly coincides with the span of...

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