Báo cáo vật lý: "Structural and Dielectric Properties of the Mn-Doped BaO-Nd2O3-4TiO2 System" ppt

... sample, the total capacitance comprises the capacitance of the grain and air in the pores. It is well known that the capacitance of air is very much less than that of the grains.17 Therefore, the ... srimala@eng.usm.my Abstract: The effect of the Nd2O3 and TiO2 ratios on the microstructure, dielectric properties and quality factor (Q.fr) of the 1 wt% Mn-doped BaO-Nd2O3-4TiO2 ... The lengths of the rod-like grains were of 2.0 to 2.5 μm. As the temperature was increased to 1300oC, the grains became slightly larger, with diameters of 1.0 to 1.2 μm. The lengths of the...

Báo cáo vật lý: "Flexural and Morphological Properties of Epoxy/Glass Fibre/SilaneTreated Organo-montmorillonite Composites Nor Hamidah Mohd" potx

... to enhance the interaction between the clay and the polymer.9 The surface of the MMT is commonly modified with a cation exchange technique to expand the basal spacing and make the layered ... agent can further expand the d-spacing of the OMMT, which could favour the intercalation and exfoliation of silane-treated OMMT in the E matrix. It is also believe that the GF and silane-treated ... in the flexural modulus and strength of the E/GF composites with the addition of silane-treated OMMT. According to Lin et al.,5 the clays were dispersed between both the bundles of GF and...

Báo cáo toán học: " Structural and optical properties of ZnS thin films deposited by RF magnetron sputtering" potx

... and carried out the experiments and wrote the first draft of the manuscript. JHA analyzed the properties and helped draft the manuscript. KNH and KSH detailed the original idea and modified the ... 7:26http://www.nanoscalereslett.com/content/7/1/26Page 7 of 7 The influence of the substrate temperatures on the sur-face morphology of the films was investigated using the FESEM imag es as shown in Figure 3. The morphology of the films ... continuous and dense. The average particle s izes varied in the range of 27.2 to 69.4nm. The crystallinity of the films improv ed, and crystal-line size along the surface became larger as the deposi-tion...

Báo cáo hóa học: " Structural and physical properties of antibacterial Ag-doped nano-hydroxyapatite synthesized at 100°C" pptx

... agreement with the results of XRD and TEM, the FTIR and FT-Raman spectra of the HAp show the absorption bands characteristic of hydroxyapatite. XPSresults provide the additional evidence for the successfuldoping ... (AgNPs) [31]. The exact antibacterial action of AgNPs is not comple-tely understood [32]. On the other hand in the litera-ture, the studies on the preparation and characteriz ation of the silver-doped ... to the c crystallographicaxis of HAp.For the undoped HAp, Ag:HAp the length of the aver-age crystallite (the average column size parallel to the c-axis) is around 43 nm and the width (the...

báo cáo hóa học:" Structural and optical properties of a radio frequency magnetron-sputtered ZnO thin film with different growth angles" pdf

... studied the growth angle effect of the films for optical properties. The thickness of the ZnO thin films was c heck ed by FE- SEM and was fixed at 100 nm. Three growth angles (0°, 15°, and 30°) of the ... check the growth a ngles of ZnO films,controlled a t 0°, 15°, and 30°, and to measure the thick-ness of the film. The film thickness was fixed at 100 nmto get the same mechanical condition of ... between the target center and the sample substratewas kept at 9.5 cm, and we manually tilted the samplesubstrate with angle measurement. The thickness and cross-sectional images of the films...

Báo cáo vật lý: "Physical and Chemical Characteristics of Citrullus lanatus Var. Colocynthoide Seed Oil" pdf

... “Gurum” and is semi-cultivated in the beach of the Nile River in the north of Sudan. The green parts of the plant are used as animal feeds, the seeds are used as a masticatory article and the residue ... as a source of heat energy for cooking.7 Due to the growth of the importance of oilseeds in the national economy of Sudan, the high demand to look for a new source of oil and the sufficient ... England) was used for determination of moisture and volatile matter under the condition of the test and the temperature was adjusted at 130 ± 2°C. 2.2 Physiochemical Characteristics of the...

Báo cáo vật lý: "Volumetric and Thermodynamic Studies of Molecular Interactions in Ternary Liquid Mixtures at 303, 308 and 313K" pptx

... decrease in the interactions between ketones and alkanols. The subsequent formation of new hydrogen bonds between the proton acceptor oxygen atoms of the group of DMF and the proton of the – OH ... explanation of the behaviour of these mixtures has been suggested. The mixing of DMF with 1-alknaols causes the dissociation of the hydrogen-bonded structure of 1-alkanols and the subsequent ... formation of (new) H-bonds [C=O … H–O] between the proton acceptor oxygen atom (with lone pair of electrons) of the C=O group of DMF and the proton of the OH group of 1-alkanols. The first...

Báo cáo vật lý: "MODELLING AND SIMULATION STUDY OF VISIBLE EMISSION TRANSMISSIVITY OF SILICON RELATED TO SINGLE AND MULTILAYER ANTIREFLECTION COATINGS" potx

... transmittance of Si as active medium in the far red region of 720–750 nm. This paper reports the design and simulation of the transmissivity of single and multilayer coatings; and also reports the ... CYB= (10) Where Y is the optical admittance and B and C are the total magnetic and total electric amplitude of the light propagation in the medium, respectively. So, the transmittance (T) ... the following conclusions: the transmissivity of ~ 720–750 nm emission of silicon is affected significantly by the single and multilayer thin film coatings of Ge, SiO2 and Si/SiO2/air and...

Tài liệu Báo cáo khoa học: Structural and functional studies of the human phosphoribosyltransferase domain containing protein 1 docx

... spectrophotometric methods.Because the enzymatic activity of PRTFDC1towards hypoxanthine and guanine is only 0.26% and 0.09%, respectively, of the activity of HPRT, the role of the PRTFDC1 in purine metabolism ... II. The hood domain is mainly builtup by residues from the C-terminus and consists of atwo-stranded anti-parallel b-sheet composed of b2 and b9 and an a-helix from the C-terminus (Fig. 1A). The two ... interacts with bothO6 and N7 (Fig. 1C). The 2¢OH of the ribose is hydro-gen bonded to the main chain and the side chain of Asp142 (Fig. 1C). Both hydroxyl groups of the riboseare involved...

Báo cáo khoa học: Structural and functional analysis of the interaction of the AAA-peroxins Pex1p and Pex6p pptx

... parts of the N-terminal fragment and ⁄ or the second cassette;ABDCEFFig. 5. Effects of point mutation of the WalkerA and B motifs of the AAA-cassettes of Pex6p on the morphological appearance of ... unknown.In this study we mapped the mutual binding sites and assayed the effects of deletion and point mutationsin Pex1p and Pex6p for the interaction of the proteins and for their overall function in ... assigned their corresponding binding sites and elucidated the importance of ATP-binding and -hydrolysis of Pex1p and Pex6p for theirinteraction. We show that the interaction of Pex1p and Pex6p...

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