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AbstractThis paper deals with the experimental investigation and nonlinear finite element analysis of composite wing T-joints in hygrothermal environments. This study is concerned with T-joints subjected to tension (pull-out) force and their behaviour up to ultimate failure under bone dry and hygrothermal environments. The behaviour of such joints is complex due to the geometry of the joint configuration and laminated construction. T-joints are also susceptible when exposed to moisture and temperature environments. As a consequence, the stiffness and strength properties of laminates because degraded. A three-dimensional 20-noded multidirectional composite element is developed using three-dimensional super element concept to analyse both unstitched and stitched T-joints. All the stress components are computed and the failure loads are evaluated using different failure criteria to get better insight into the behaviour of laminated composite wing T-joints.
The removal of tartrazine dye from aqueous solution using g-C3N4/Fe3O4 nanocomposites was studied.
The g-C3N4/Fe3O4 nanocomposites were synthesized using simple co-precipitation method. The
synthesized nanocomposites were characterized by spectral (UV-Vis DRS, FT-IR) and analytical
(PXRD, SEM, EDAX, HRTEM) techniques. Photodegradation of tartrazine dye using the synthesized
catalyst was studied. The g-C3N4/Fe3O4 nanocomposites exhibited excellent photocatalytic performance
by degrading tartrazine (90%) at 0.1 g/L of catalyst and 20 μM initial dye concentration at pH 3. The
excellent performance by the catalyst was attributed to the highest electron hole pair generation. The
kinetic study revealed that the photodegradation of tartrazine obeyed pseudo first-order kinetics.
Donepezil HCl is an anti Alzheimer's drug of the acetylcholinesterase class. It is widely used in treatment of Alzheimer's disease and to control dementia. Orodispersable Tablets (ODTs) containing Donepezil HCl was prepared using super-disintegrant (croscarmellose sodium) by direct compression method using solid dispersion technique to mask the taste of the drug. Three types of excipient were used to mask the taste namely Mannitol, PEG 6000 and PVP K 30 in three different ratios (i.e. 1:1, 1:2, 1:3) using solvent evaporation method in solid dispersion technique.The optimized formulation shows the minimum disintegration time of 50 sec and release maximum amount of drug in 10 min. Short term stability studies indicated no significant changes in hardness, friability, in vitro disintegration time, drug content and in vitro drug release.
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