Toxicity of some organic biocides to exotic carp fingerlings Hypophthalmichthys molitrix (C and V)

A bioassay study was conducted using three organic pesticides to determine their comparative toxicity to fingerlings of Hypophthalmichthys molitrix. There was wide variation in the toxicity of different pesticides with 24 hr LC sub(50) values ranging from 0.000403 to 0.294 mg/l. Endosulfan appeared to be the most toxic, whereas BHC was the least

Accelerating Bianchi Type-V Cosmology with Perfect Fluid and Heat Flow in Saez-Ballester Theory

In this paper we discuss the law of variation of scale factor $a = (t^{k}e^{t})^{\frac{1}{n}}$ which yields a time-dependent deceleration parameter (DP) representing a new class of models that generate a transition of universe from the early decelerated phase to the recent accelerating phase. Exact solutions of Einstein's modified field equations with perfect fluid and heat conduction are obtained within the framework of Saez-Ballester scalar-tensor theory of gravitation and the model is found to be in good agreement with recent observations. We find, for n = 3, k = 1, the present value of DP in derived model as q_0 = -0.67 which is very near to the observed value of DP at present epoch. We find that the time-dependent DP is sensible for the present day Universe and give an earmark description of evolution of universe. Some physical and geometric properties of the models are also discussed.Comment: 12 pages, 5 figure

Study of Effect of Load on Springback in Sheet Metal Bending

Springback remains a major concern in sheet metal bending in fabricating any final product within the permissible tolerance. Apart from the geometrical and material parameters, springback is significantly affected by the forming load also and the present study is focused on it. Sheet metal bending process involves large rotation and strain as well as large springback due to elastic recovery of the material. Therefore, a large deformation algorithm based Finite Element software was used to model a typical sheet metal bending process employed in manufacturing cylindrical structures. A Total-Elastic-Incremental-Plastic (TEIP) algorithm has been incorporated in an in-house software to handle large deformation and the elastic recovery during the unloading process. In addition, experiments have been performed on aluminum, brass, copper and mild steel sheets and substantiated with the FEM analysis

An analysis of spring back in sheet metal bending using finite method (FEM.)

A large deformation algorithm based on Total-Elastic-Incremental-Plastic Strain (TEIP) was used for modeling a typical sheet metal bending process. The bending process involves large strain, rotation as well as springback due to elastic recovery of the material. A finite element method (FEM) software based on TEIP strain that is capable of handling large rotation and elastic recovery was employed. In this investigation, the prediction of springback was essentially carried out as numerical experiment and the results are presented in terms of springback ratio. In particular, this study examines the effect of load on springback varying the thickness as well as the radius of the die. The numerical results agree with the experimental ones with a reasonable accuracy

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Not AvailableThe effects of post-hatch (PH) feed deprivation (FD) for 6, 12, 24 and 36 h were assessed on performance, gut development and differential expression of gut associated genes in slow-growing broiler chickens. A significantly higher (P=0.001) yolk sac weight was observed in all the FD chicks. The residual yolk sac of 24h and 36h FD chicks had a higher ether extract but lower protein content than that of control (immediately fed) chicks. The relative weights of the proventriculus, gizzard, intestine, liver and pancreas were lower in 24h and 36h FD chicks. The 36h FD chicks had lower (P<0.05) body weights, lower feed intake and inferior FCR than those of control or 6h FD chicks. Lower serum glucose but higher cholesterol and uric acid were recorded in 36 h FD chicks. Villus height and width in the duodenum, jejunum and ileum decreased (P=0.001) with an increase in the FD period, and significant changes were primarily observed in 36h FD chicks. The relative expression of Cdx decreased with the feed restriction period. Expression of the SGLT and FABP genes did not differ significantly in FD and control chicks, while that of the EAAT gene increased in 24h and 36h FD chicks. Villus height correlated positively with Cdx gene, but negatively with SGLT or EAAT gene expression. It is concluded that post hatch feed deprivation for first 24h did not affect performance, intestinal development and morphology. Correlation of jejunum villi with Cdx and EAAT gene expression indicates their role in the intestine development of broiler chickens.Not Availabl

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Not AvailableExpression of HSPs: an adaptive mechanism during long-term heat stress in goats (Capra hircus).Not Availabl

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Not AvailableImpact of short-term heat stress on physiological responses and expression profile of HSPs in Barbari goats.Not Availabl

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Not AvailableImpact of short-term heat stress on physiological responses and expression profile of HSPs in Barbari goats.Not Availabl

Room temperature d0 ferromagnetism, zero dielectric loss and ac-conductivity enhancement in p-type Ag-doped SnO2 compounds

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