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Alok Sharma,G.D. Reddy,Atul Kaushik,K.Shanker,R.K. Tiwari,Alok Mukherjee,Ch.V. Rao 한국생약학회 2007 Natural Product Sciences Vol.13 No.1
ethanolic (50% v/v) extracts of Carissa carandas (fruits) (Apocynaceae) and Microstylis wallichii(tubers) (Orchidaceae) were examined for anti-inflamatory and analgesic activities in experimental animals.Carissa carandas and Microstylis wallichii (50 - 200 mg/kg) caused a dose dependent inhibition of swellingcaused by carrageenin significantly in cotton pellet induced granuloma in rats (P < 0.05 to P < 0.001). There was asignificant increase in the analgesy meter induced pain in rats. The extracts of Carissa carandas and Microstyliswallichii resulted in an inhibition of stretching episodes and percentage protection was 16.05 - 17.58%respectively in acetic acid induced writhing.KeywordsCarissa carandas, Microstylis wallichii, pain, inflamation
Vibhav K. Saraswat,K. Singh,N.S. Saxena,V. Kishore,T.P. Sharma,P.K. Saraswat 한국물리학회 2006 Current Applied Physics Vol.6 No.1
Measurements ofIV characteristics and DC electrical conductivity of Se85. xTe15Sbx (wherex = 2, 4, 6, 8 and 10) glassy thinpellets, prepared by well established melt quenching technique in bulk (pellets of diameter 12mm and thickness. 1m were pre-pared under a constant load of 5 tons), have been carried out at room temperature using Keithley High Resistance Meter/Electrom-eter 6517A. For the recording ofIV characteristics, this equipment was used in FVMI (Force Voltage Measure Current) mode. It isIV characteristics that the glass containing 4 at. wt.% of Sb has the minimum resistance allowing maximumcurrent through the sample as compared to the other at. wt.% of Sb contents e.g. 2, 6, 8 and 10.At 4 at. wt.% of Sb, conductivityrises to 76% of the value obtained for 2 at. wt.% of Sb. Composition dependence of DC conductivity is discussed in terms of thebond formation between Se and Sb at dierent compositions. The conduction mechanism is discussed qualitatively on the basisof PooleFrenkel conduction mechanism. Also the linear relation between ln (I) and V1/2veries that the conduction mechanismis of PooleFrenkel type for both low and high voltage range. The deviation of ohmic behaviour at lower voltage range towardsthe non-ohmic at higher voltage range is due to the high voltage induced temperature eects in the sample.
Flow Investigations in the Crossover System of a Centrifugal Compressor Stage
Reddy, K. Srinivasa,Murty, G.V. Ramana,Dasgupta, A.,Sharma, K.V. Korean Society for Fluid machinery 2010 International journal of fluid machinery and syste Vol.3 No.1
The performance of the crossover system of a centrifugal compressor stage consisting of static components of $180^{\circ}$ U-bend, return channel vanes and exit ducting with a $90^{\circ}$ bend is investigated. This study is confined to the assessment of performance of the crossover system by varying the shape of the return channel vanes. For this purpose two different types of Return Channel Vanes (RCV1 and RCV2) were experimentally investigated. The performance of the crossover system is discussed in terms of total pressure loss coefficient, static pressure recovery coefficient and vane surface pressure distribution. The experimentation was carried out on a test setup in which static swirl vanes were used to simulate the flow at the exit of an actual centrifugal compressor impeller with a design flow coefficient of 0.053. The swirl vanes are connected to a mechanism with which the flow angle at the inlet of U-bend could be altered. The measurements were taken at five different operating conditions varying from 70% to 120% of design flow rate. On an overall assessment RCV1 is found to give better performance in comparison to RCV2 for different U-bend inlet flow angles. The performance of RCV2 was verified using numerical studies with the help of a CFD Code. Three dimensional sector models were used for simulating the flow through the crossover system. The turbulence was predicted with standard k-$\varepsilon$, 2-equation model. The iso-Mach contour plots on different planes and development of secondary flows were visualized through this study.
Sharma, R.K.,Domala, V.,Sharma, R. Techno-Press 2019 Ocean systems engineering Vol.9 No.4
Herein, we present numerical simulation based model to study the use of a 'Tuned Mass Damper (TMD)' - particularly spring mass systems - to control the displacements at the deck level under seismic and ice loads for an offshore jacket structure. Jacket is a fixed structure and seismic loads can cause it to vibrate in the horizontal directions. These motions can disintegrate the structure and lead to potential failures causing extensive damage including environmental hazards and risking the lives of workers on the jacket. Hence, it is important to control the motion of jacket because of earthquake and ice loads. We analyze an offshore jacket platform with a tuned mass damper under the earthquake and ice loads and explore different locations to place the TMD. Through, selected parametric variations a suitable location for the placement of TMD for the jacket structure is arrived and this implies the design applicability of the present research. The ANSYS<sup>*TM</sup> mechanical APDL software has been used for the numerical modeling and analysis of the jacket structure. The dynamic response is obtained under dynamic seismic and ice loadings, and the model is attached with a TMD. Parameters of the TMD are studied based on the 'Principle of Absorption (PoA)' to reduce the displacement of the deck level in the jacket structure. Finally, in our results, the proper mass ratio and damping ratios are obtained for various earthquake and ice loads.
V. Vohra,S.K. Niranjan,A.K. Mishra,V. Jamuna,A. Chopra,Neelesh Sharma,정동기 아세아·태평양축산학회 2015 Animal Bioscience Vol.28 No.3
Phenotypic characterization and body biometric in 13 traits (height at withers, body length, chest girth, paunch girth, ear length, tail length, length of tail up to switch, face length, face width, horn length, circumference of horn at base, distances between pin bone and hip bone) were recorded in 233 adult Gojri buffaloes from Punjab and Himachal Pradesh states of India. Traits were analysed by using varimax rotated principal component analysis (PCA) with Kaiser Normalization to explain body conformation. PCA revealed four components which explained about 70.9% of the total variation. First component described the general body conformation and explained 31.5% of total variation. It was represented by significant positive high loading of height at wither, body length, heart girth, face length and face width. The communality ranged from 0.83 (hip bone distance) to 0.45 (horn length) and unique factors ranged from 0.16 to 0.55 for all these 13 different biometric traits. Present study suggests that first principal component can be used in the evaluation and comparison of body conformation in buffaloes and thus provides an opportunity to distinguish between early and late maturing to adult, based on a small group of biometric traits to explain body conformation in adult buffaloes.
Experimental Heat and Mass Transfer Coefficients of a Two Stage Spray and Packed Bed Deaerator
( K. V. Suryanarayana ),( R. A. Bakar ),( Chang Sik Lee ),( D. M. Reddy Prasad ),( K. V. Sharma ) 한국액체미립화학회 2010 한국액체미립화학회 학술강연회 논문집 Vol.2010 No.-
Experiments are conducted to study the influence of mass flow rate on heat and mass transfer coefficients in a two stage deaerator consisting of a spray stage and packed bed combination. It has been observed that an increase in mass flow rate of water increases the heat transfer coefficients in both the stages of the deaerator, whereas the mass transfer coefficients increases in the first and decreases in the second stage. The heat transfer coefficient in the spray stage is 300 times greater than that obtained in the packed bed. The mass transfer coefficient decreased by 2 times in the second stage with increase in flow rate in the range of experiments conducted. It has been observed that oxygen can be reabsorbed by the outgoing feed water under certain conditions of flow.
Singh, V.K.,Pattanaik, Ashok Kumar,Goswami, T.K.,Sharma, K. Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.8
Effects of varied dietary energy densities on immune response and performance of Muzzafarnagari lambs were ascertained in a 180-d study. Animals (n = 24), in three groups, were fed diets providing 100% (100E), 80% (80E) or 70% (70E) of their metabolizable energy requirement. Mean nutrient digestibilities varied significantly among treatments. Nitrogen intake was lower (p<0.01) in the 70E. Nitrogen retention, was reduced (p<0.001) in 80E and 70E vs 100E. The average daily gain (p<0.001) was $47.01{\pm}4.23$, $13.54{\pm}1.72$ and $-16.67{\pm}8.24$ g for 100E, 80E and 70E, respectively. Hemoglobin concentration, haematocrit, total and differential leukocyte counts were lower (p<0.001) for 80E and 70E than for 100E with a similar trend (p<0.05) for serum glucose and total protein. Serum cortisol was reduced (p<0.001) with decreased energy availability. Antibody titre to Brucella abortus S19 showed an initial reduction in 80E and 70E vs 100E. Delayed-type hypersensitivity response was lower (p<0.001) in 80E and 70E vs 100E, accompanying a lower (p<0.001) nitric oxide production by the peripheral lymphocytes. It is concluded that the reduced dietary energy density significantly affects the growth performance and immune response of lambs.
Vohra, V.,Niranjan, S.K.,Mishra, A.K.,Jamuna, V.,Chopra, A.,Sharma, Neelesh,Jeong, Dong Kee Asian Australasian Association of Animal Productio 2015 Animal Bioscience Vol.28 No.3
Phenotypic characterization and body biometric in 13 traits (height at withers, body length, chest girth, paunch girth, ear length, tail length, length of tail up to switch, face length, face width, horn length, circumference of horn at base, distances between pin bone and hip bone) were recorded in 233 adult Gojri buffaloes from Punjab and Himachal Pradesh states of India. Traits were analysed by using varimax rotated principal component analysis (PCA) with Kaiser Normalization to explain body conformation. PCA revealed four components which explained about 70.9% of the total variation. First component described the general body conformation and explained 31.5% of total variation. It was represented by significant positive high loading of height at wither, body length, heart girth, face length and face width. The communality ranged from 0.83 (hip bone distance) to 0.45 (horn length) and unique factors ranged from 0.16 to 0.55 for all these 13 different biometric traits. Present study suggests that first principal component can be used in the evaluation and comparison of body conformation in buffaloes and thus provides an opportunity to distinguish between early and late maturing to adult, based on a small group of biometric traits to explain body conformation in adult buffaloes.
Burungale, V.V.,Satale, V.V.,More, A.J.,Sharma, K.K.K.,Kamble, A.S.,Kim, J.H.,Patil, P.S. Academic Press 2016 JOURNAL OF COLLOID AND INTERFACE SCIENCE - Vol.470 No.-
Exotic hierarchical rutile TiO<SUB>2</SUB> nanostructures are synthesized by surfactant free single step hydrothermal route. The effect of reaction temperature, ranging from 140<SUP>o</SUP>C to 200<SUP>o</SUP>C on the properties of the synthesized rutile-TiO<SUB>2</SUB> is investigated. The synthesized rutile-TiO<SUB>2</SUB> nanostructures are characterized using X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, UV-vis spectroscopy and scanning electron microscopy techniques. The deposited TiO<SUB>2</SUB> samples are found to be photoelectrochemically active and the best photoelectrochemical performance (0.95+/-0.05%) is obtained for the sample deposited at 180<SUP>o</SUP>C. A possible temperature dependent growth mechanism resulting in photochemically active TiO<SUB>2</SUB> nanostructure thin films is proposed.