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Pure Mg foams stabilized by ex-situ added CaO particles were developed in this study. Mg/xCaO foams (x = 5, 7 and 10 wt.%) exhibited uniform pore distribution, thinner yet stable pore wall cross-sections. Mg-Ca-O transition phase and MgO particles were formed at the interface of Mg-CaO, which improved the wetting of CaO particles in the Mg melt. The CaO particles, Mg-Ca-O transition phase and blocky MgO particles collectively stabilized the foam. Mg-Ca-O and MgO phases disperse along the gas-liquid interface of foams thereby preventing from wrinkling of interfaces during solidification. TEM analysis of Mg/10wt.% CaO foam powder also confirmed the formation of nano-sized (~ 200 nm) MgO particles of different morphologies. TG-DSC analysis confirmed the exothermic Mg-CaO reaction at 610 ºC, resulting in formation of Mg2Ca and MgO phases, as identified using XRD analysis. 7 wt.% CaO addition exhibited the best foam structure in terms of mean pore diameter (2.19 mm) and circularity (0.75). The lowest foam density of 0.38 g/cm3 and relative density of 21 % was achieved in case of Mg/10wt.% CaO foams. [ABSTRACT FROM AUTHOR]

The prerequisite steps for summarizing, retrieval of video are detection of shot transitions and extraction of key frames. We hypothesized an advanced, ultra-modern Scale Invariant Feature Transform (SIFT). This SIFT method captures statistical modifications of various shot transitions, next the key frames or representative frames are extracted from those segmented shot with the calculation of entropy for each frame in the shot. We can amplify the performance of over proposed system by removing the repeated representative frames using the technique called edge matching rate. This intensified algorithm is applied to variable classes of videos to perceive shot transitions and getting of the key frame. Thus, the proposed algorithm proves its efficacy and accuracy in exhibiting its experimental results. [ABSTRACT FROM AUTHOR]

The rapid development of video capture and information sharing technology has resulted in an overwhelming number of online video archives. This makes it difficult to retrieve videos from a large database using a traditional text-based system. The only solution to this problem is to retrieve videos based on their content. Ample algorithms have been hypothesized to reclaim videos from an enormous data base. Besides they could not diminish the time consumption and their coherence couldn't satisfy the users. We postulated the new approach which clubs the spatial features along with temporal features by making use of widespread video data and this amplifies the efficiency of video retrieval. In this regard, we move oncolour and motion features to get full data of video. Comparing the features of a demand video to those of a video to be retrieved from a server is easy, rather than comparing the entire content of the video. Therefore, designers of CBVR systems will follow two major steps to balance extraction and similarity of features [24]. [ABSTRACT FROM AUTHOR]

Composites of (1 −x)Na0.5Bi0.5TiO3-(x)SrTiO3, wherex= 0.05, 0.10, 0.15, 0.2, 0.3 and 0.9 are studied. Individual compounds are synthesized by sol gel, and composites are prepared by solid-state sintering process. Through the analysis of X-ray diffraction, lattice parameters are obtained and, from scanning electron microscope (SEM), micro-structure of the samples is observed. The depolarization temperature (Td) and the Curie temperature (Tc) are determined from dielectric studies. Relaxor behavior of the samples is interpreted using modified Curie Weiss law. Control of polarization in sodium bismuth titanate (NBT) is achieved using strontium titanate (SrTiO3-ST) and studied through polarization vs. electric field (PE) loops and piezoelectric measurements. The intra-granual and inter-granual effects on the electrical properties of the ceramics are studied from impedance analysis. [ABSTRACT FROM AUTHOR]

Zr-modified Auruvillius family of lanthanum bismuth titanate, namely Bi3.25La0.75Ti3−xZrxO12(BLTZ,x= 0, 0.1, 0.3, 0.5, 0.7 and 1), was prepared by solid-state reaction method. Dielectric properties of the ceramics were studied as a function of temperature. Hysteresis measurements were also performed. Among the composition, Bi3.25La0.75Ti2.9Zr0.1O12(BLTZ1) showed large remnant polarization compared to the promising ceramic, namely Bi3.25La0.75Ti3O12. The results were corroborated with the pyroelectric, electric polarization and Raman spectroscopic data. [ABSTRACT FROM AUTHOR]

Metal complexation behavior of Schiff base function supported on 2 mol% DVB-, EGDMA-, BDDMA-, HDODA-, and TTEGDA-crosslinked polystyrenes and the catalase-like activity of the resulting polymer–metal complexes were followed. The polymeric ligands and metal complexes were characterized by IR, UV, EPR, and SEM analyses. The catalytic activities of these metal complexes were investigated in the decomposition of hydrogen peroxide as a model reaction. The Fe(II), Fe(III), Co(II), Ni(II), and Cu(II) complexations of the various crosslinked systems varied with the nature of the crosslinking in the polystyrene backbone. The metal uptake followed the order: Cu(II) > Co(II) > Ni(II) > Fe(III) > Fe(II). Among the various metal complexes, Co(II) and Cu(II) complexes are efficient for showing the catalase-like activity. The metal ion complexation and catalytic activity decreased with increasing hydrophilicity of the crosslinking agent in the polymer support. [ABSTRACT FROM AUTHOR]

Polycrystalline materials of rare earth-substituted (La, Sm, Gd and Dy) 5-layered compound of Bi 6 Fe 2 Ti 3 O 18 were prepared by solid state sintering method. Dielectric measurements were made on these samples, which reveal the occurrence of diffuse phase transitions. The Curie temperatures of these materials have been found to be strongly dependent on the size of the rare earth ion. Pyroelectric and P vs. E measurements at room temperature confirm their ferroelectric nature. [ABSTRACT FROM AUTHOR]

Abstract. TiO[sub 2]-Fe[sub 2]O[sub 3] semiconducting films were prepared by the resistive evaporation method on a glass substrate. Impedance and optical absorption measurements were made on these samples. From the impedance analysis (assuming an equivalent RC circuit), it was observed that the admittance and impedance functions are frequency dependent. From the optical absorption spectrum, the energy band-gap value was found to be 1.15 eV. The charge-carrier concentration (N) is calculated by using Mott-Schottky relations. I - V measurements were also made on these samples. [ABSTRACT FROM AUTHOR]

Presents a case study evaluating a student rating form used in faculty appraisal. Facets of research on student ratings; Issues covered in the report; Details of study; Findings; Discussion; Recommendations.

Summary: Incorporation of the renewable resources (RR) with regular grid has many challenges like location difference between the renewable energy source and energy distribution point, and characteristic constraints like variability in weather may reduce wind energy, and reduced rain may result in lower hydroelectric energy and so on. In this work, an efficient method is proposed to integrate the RR energy in to the regular power grid. By integrating the RR with conventional energy grid, the user consumption charges can be considerably reduced and, the exploitation of fossil fuels can be gradually reduced. The work also proposes an efficient mechanism to employ real‐time tariff management by demand control center that collects the usage information in real‐time scale. Experimental simulations are performed using MATLAB/SIMULINK environment. For real‐time simulations, fuzzy controller‐ and TCP/IP‐based communication technologies are used. The results show that the proposed work exhibit a better performance against SCADA system, and it shows effective implementation of tariff and energy utility management. [ABSTRACT FROM AUTHOR]