Pauri Garhwal, India
Pauri Garhwal, India

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Soni S.,Gbpant Engineering College | Shanker Y.,Gbpant Engineering College
2011 International Conference on Multimedia, Signal Processing and Communication Technologies, IMPACT 2011 | Year: 2011

In this work, we present an improved deterministic model to characterize the field in the shadow of a building. The model includes the higher order diffraction coefficient (slope diffraction) and transmission through the building. A generalized transmission model for a series of n buildings is also presented. The proposed model is validated for a single building scenario with the available measurements. © 2011 IEEE.


Joshi A.,Gbpant Engineering College | Kothiyal P.,Gbpant Engineering College | Pant R.,Gbpant Engineering College
International Journal of Applied Engineering Research | Year: 2012

CNC Vertical End Milling Machining is a widely accepted material removal process used to manufacture components with complicated shapes and profiles. CNC end milling is a unique adaption of the conventional milling process which uses an end mill tool for the machining process. During the End milling process, the material is removed by the end mill cutter. The effects of various parameters of end milling process like spindle speed, depth of cut, feed rate have been investigated to reveal their Impact on o Material Removal Rate using Taguchi Methodology. Experimental plan is performed by a Standard Orthogonal Array. The results of analysis of variance (ANOVA) indicate that the proposed mathematical model can be adequately describing the performance within the limit of factors being studied. The optimal set of process parameters has also been predicted to maximize the MRR. © Research India Publications.


Mishra S.,Institute of Nuclear Medicine and Allied Sciences | Reddy D.S.K.,Gbpant Engineering College | Jamwal V.S.,Gbpant Engineering College | Bansal D.D.,Institute of Nuclear Medicine and Allied Sciences | And 6 more authors.
Molecular and Cellular Biochemistry | Year: 2013

This study was focused to evaluate protection of indigenous antioxidant system of mice against gamma radiation-induced oxidative stress using a semiquinone (SQGD)-rich fraction isolated from Bacillus sp. INM-1. Male C57bl/6 mice were administered SQGD (50 mg/kgb.w.i.p.) 2 h before irradiation (10 Gy) and modulation in antioxidant enzymes activities was estimated at different time intervals and compared with irradiated mice which were not pretreated by SQGD. Compared to untreated controls, SQGD pretreatment significantly (p < 0.05) accelerates superoxide dismutase, catalase, GSH, and glutathione-S-transferase activities. Similarly, significant (p < 0.05) increase in the expression of superoxide dismutase, catalase, GSH, and glutathione-S-transferase was observed in irradiated mice pretreated by SQGD, compared to only irradiated groups. Total antioxidant status equivalent to trolox was estimated in renal tissue of the mice after SQGD administration. Significant ABTS+ radical formation was observed in H2O2-treated kidney homogenate, due to oxidative stress in the tissue. However, significant decrease in the levels of ABTS+ radical was observed in kidney homogenate of the mice pretreated with SQGD. Therefore, it can be concluded that SQGD neutralizes oxidative stress by induction of antioxidant enzymes activities and thus improved total antioxidant status in cellular system and hence contributes to radioprotection. © 2013 Springer Science+Business Media New York.


Prasad L.,Gbpant Engineering College | Subbarao P.M.V.,Indian Institute of Technology Delhi | Subrahmanyam J.P.,ITM University
Renewable Energy | Year: 2015

Pongamia residue (shells) is the byproduct from the biodiesel processing industry, which is a lignocellulosic biomass material. It is not suitable as feedstock in downdraft wood gasifier due to low bulk density (146kg/m3) of shells as compared to wood (more than 350kg/m3). Pelletization and gasification of pelletized shells was carried out in the present work. The heat transfer analysis in pellets of 17mm and 11.5mm was also carried out to evaluate thermal properties of this biomass. Shell pellets of 17mm and 11.5mm diameter and length in the range of 10-60mm were gasified in a 20kWe downdraft wood gasifier. The complete gasification of pellets with 17mm diameter could not be achieved because of less porosity and presence of larger thermal gradient within the pellets. The gasification efficiency was 73% for 17mm diameter pellets which is lower than that of 11.5mm diameter pellets which was 95%. The calorific value of producer gas generated from smaller diameter pellets was higher (4.66MJ/Nm3) as compared to larger diameter pellets (3.98MJ/Nm3). Tar formation during gasification of smaller diameter pellets was low as compared to larger diameter pellets. © 2015 Elsevier Ltd.


Gautam A.,Gbpant Engineering College | Bhadauria H.,Gbpant Engineering College
Proceedings of the 2014 International Conference on Advances in Computing, Communications and Informatics, ICACCI 2014 | Year: 2014

The extraction of nucleus from the blood smear images of white blood cells (WBC) provides the valuable information to doctors for identification of different kinds of diseases as most of the diseases present in body can be identified by analyzing blood. Manually it very soporific and tiresome to segment the nucleus and after that classification is done on the basis of that besides that the instruments which are used by experts for segmentation and classification of white blood cells are not affordable by every hospitals and clinics, so automatic system is preferable which reduces the times of segmentation and classification. In our research we focus on segmentation of nucleus from blood smear images using Otsu's thresholding technique applied after contrast stretching and histogram equalization of image followed by minimum filter for reducing noise and increasing brightness of nucleus, mathematical morphological is done to remove the components which are not WBCs, then shape based features are extracted on the basis of that classification rule is applied to classify them in their five category. The classification of nucleus is necessary as they are used to identify different kind of diseases which are related to each type of white blood cells and also help in differential blood count of cells. © 2014 IEEE.

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