Enhancing the Thermal and Mechanical Properties of Organic-Inorganic Hybrid Nanocomposite Films Based on Poly Lactic Acid/OMMT Nano Clay

Abstract: Organic (PLA) inorganic (OMMT nano clay) hybrid nanocomposite films were fabricated using poly lactic acid (PLA) with various weight percentages (1-3wt%) of organically modified montmorillonite (OMMT) nano clay by means of one step solvent casting method. The thermal, mechanical and water absorption properties were determined as per standard testing methods to determine the optimum percentage of OMMT nano clay within the nanocomposite was investigated. The surface morphology of the organic-inorganic hybrid nanocomposite films was analyzed through XRD, SEM, and TEM surface analytical techniques. The incorporation of OMMT clay in to PLA matrix is found to have enhanced the thermo-mechanical properties. The water absorption and solubility test results also support the data from thermo-mechanical tests. The 2 wt % OMMT clay loaded PLA films showed the best results among all. The obtained results showed that the thermal, mechanical and water absorption properties could be increased significantly with the optimum incorporation of OMMT nano clay in a PLA matrix, in comparision wih the neat PLA

Ontogenesis, distribution and relative sensitivity of hCG receptors to hCG and LH in goat ovaries

The binding of [<SUP>125</SUP>I] hCG to immature and mature follicles and corpora lutea of goat ovaries has been studied. The hormone is bound maximally by corpora lutea although mature follicles also exhibit some binding. Immature follicles are practically devoid of receptors for this hormone. In the corpus luteum, the receptors for the hormone are present in thecal and luteal cells. Autoradiographic studies show the location of the bound radioactivity grains primarily along the plasma membranes of these cells, although some radioactivity grains were also seen in the cytoplasm of luteal but not thecal cells. On a mole to mole basis, hCG was found to displace [<SUP>125</SUP>I] hCG from binding to receptors on corpus luteum better than hLH and oLH

Simulation and Design of SRF based Control Algorithm for Three Phase Shunt Active Power Filter

Abstract — Active power filters are effective in mitigating line current harmonics and compensating for the reactive power in the line. There are basically two types of Active Power Filters (APFs): shunt type and series type. Shunt active power filters (SAPFs) represent the most important and most widely used filters in industrial purposes, this is due not only to the fact that eliminate the harmonic current but also they are suitable for a wide range of power ratings. In this paper, Synchronous Reference Frame (SRF) theory is employed to calculate compensating currents while the three phase source is feeding a highly non-linear load. The main objective is to study and investigate the performance of Shunt active power filter using SRF theory. The algorithm is simulated under MATLAB 7.8 environment using Simulinkand SimPowerSystems toolbox. The results shown are within the IEEE Standard 512-1992

Integral Equation via Fixed Point Theorems on a New Type of Convex Contraction in <i>b</i>-Metric and 2-Metric Spaces

Our paper is devoted to describing a new way of generalized convex contraction of type-2 in the framework of b-metric spaces and 2-metric spaces. First, the concept of a new generalized convex contraction on b-metric spaces and 2-metric spaces is introduced, and fixed point theorem is extended to these spaces. Some examples supporting our main results are also presented. Finally, we apply our main result to approximating the solution of the Fredholm integral equation