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Search Results: 1 - 10 of 28128 matches for " Vinod Kumar Sharma "
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The Automated Vehicle Detection of Highway Traffic Images by Differential Morphological Profile  [PDF]
Bharti Sharma, Vinod Kumar Katiyar, Arvind Kumar Gupta, Akansha Singh
Journal of Transportation Technologies (JTTs) , 2014, DOI: 10.4236/jtts.2014.42015
Abstract:

Vehicle detection has been the critical part of the traffic surveillance system for many years. However, vehicle detection method is still challenging. In this paper, differential morphology closing profile is used to extract the vehicle automatically from the traffic image. Along with closing profile, some addition operation has been applied as a part of the algorithm to get the high detection and quality rate. Result demonstrated that the novel method has an excellent detection and quality percentage. We also have compared our automated detection method with other traditional image processing based methods and the results indicate that our proposed method provides better results than traditional image processing based methods.

A set of SCAR markers in cluster bean (Cyamopsis tetragonoloba L. Taub) genotypes  [PDF]
Pratibha Sharma, Vinod Kumar, K. Venkat Raman, Kapil Tiwari
Advances in Bioscience and Biotechnology (ABB) , 2014, DOI: 10.4236/abb.2014.52017
Abstract:

Cluster bean, one of the most important cash legume crop has played an increasingly important role in wide range of industries. Owing to the significance of molecular marker studies in numerous applications including in genetic improvement of crops, there is an obvious need to undertake such studies in cluster bean. In the present work, 35 genotypes of cluster bean were collected from different states of India and analyzed using RAPD and ISSR markers. Further SCAR marker system was introduced in order to increase the reproducibility of the polymorphism and specificity. For this polymorphic (RP-3, 1000 bp; RP-19, 1250 bp and 1100 bp) and geographical specific bands (RP-9, 650 bp) from RAPD as well as genotype specific band (IS-8, 550 bp) from genotype RGC-1031 (Rajasthan) from ISSR were selected and converted into SCAR markers. The study revealed first set of sequence-based SCAR markers in cluster bean which found more specific information using RAPD and ISSR profiles. One genotype specific SCAR-20 for RGC-1031 (tolerant genotype against Macrophomina phaseolina), could be used to prove identity of the genotype for improvement as well for its genetic purity assessment. Another SCAR-8 was selected due to its specificity for cluster bean genotypes from Rajasthan which might be important for population admixture studies.

Role of Multiple Encryption in Secure Electronic Transaction
Himanshu Gupta,Vinod Kumar Sharma
International Journal of Network Security & Its Applications , 2011,
Abstract: Security of electronic transaction over insecure communication channel is a challenging task that includes many critical areas as secure communication channel, strong data encryption technique and trusted third party to maintain the electronic database. The conventional methods of encryption in Secure Electronic Transaction can only maintain the data security. The confidential information of customer could be accessed by the unauthorized user for malicious purpose. Therefore, it is necessary to apply effective encryption methods to enhance data security as well as authentication of data communication.The multiple encryption technique provides sufficient security for electronic transactions over wireless network. In this research paper, the needs of multiple encryption technique in Secure Electronic Transaction are proposed to enhance the security of confidential data. This technique increases the data security in such a manner that unauthorized user can not access any part of information over wireless network as internet.
Association between Serum Neopterin and Inflammatory Activation in Chronic Kidney Disease
Ashok Kumar Yadav,Vinod Sharma,Vivekanand Jha
Mediators of Inflammation , 2012, DOI: 10.1155/2012/476979
Abstract: Background. The serum levels of neopterin, a marker associated with cell-mediated immunity are elevated in chronic kidney disease (CKD). We evaluated serum neopterin levels and investigated its association with markers of inflammation in a cross-section of CKD subjects without known cardiovascular disease. Methods. Serum neopterin levels were measured in 118 patients with stage 3–5 CKD and 41 healthy subjects with normal kidney function (HC). Patients with known cardiovascular disease were excluded. We also estimated highly sensitive CRP (hsCRP) and interluekin-6 (IL-6), tumor necrosis factor- (TNF-) and interferon- (IFN-) in the CKD subjects. All assays were done using commercially available ELISA kits. The correlation between neopterin and markers of inflammation were investigated. Results. Of the CKD population, 82 were in stage 5 (60 stage 5 D), 24 in stage 4, and 12 in stage 3. The mean age was 51.04±1.3 years and 66% were males. The commonest cause of CKD was diabetes (36%). Serum neopterin levels were 5-fold higher in CKD patients as compared to HC (74.8±3.6 versus 15.0±2.8 nmol/L, <0.0001). There was a graded increase of serum neopterin from stages 3 to 4 and 5. CKD 5 D patients exhibited significantly higher levels compared to nondialysis stage 5 patients (<0.0001). An inverse correlation was noted between serum neopterin and eGFR (=?0.359, <0.0001). Serum neopterin correlated with hsCRP (=0.285, =0.002), IL-6 (=0.212, =0.034), and IFN- (=0.32, =0.001) but not with TNF-. Conclusion. Serum neopterin level is elevated and correlates with the severity of CKD. The elevation correlates with elevation of most, but not all, inflammatory markers. Its role in future development of cardiovascular disease and modulation with anti-inflammatory therapies needs further studies.
Clinical Lesions In Dermatology : Consensus Definitions
Sharma Vinod Kumar,Prasad H R Y
Indian Journal of Dermatology , 2003,
Abstract:
Development and Validation of a RP-HPLC Method For Simultaneous Determination of Amlodipine Besylate and Hydrochlorthiazide in Tablet Dosage Form
Sharma Hemandra Kumar,Vinod Sahu,Rahul Sahu
International Journal of Research in Pharmacy and Science , 2011,
Abstract: A simple, precise, rapid and reproducible reversed-phase high performance liquid chromatography (RP-HPLC) method is developed for the simultaneous estimation of amlodipine besylate (AML) and hydrochlorthiazide (HCZ) present in multicomponent dosage forms. Chromatography is carried out isocratically at 25°C ± 0.5°C on an Prontosil C-18 column (4.6 x 250mm, 5μ particle size) with a mobile phase composed of acetonitrile: methanol: phosphate buffer (pH-3) in the ratio of 48:12:40 v/v/v at a flow rate of 1.2 mL/min. Detection is carried out using a UV-PDA detector at 232 nm. Parameters such as linearity, precision, accuracy, recovery, specificity and ruggedness are studied as reported in the International Conference on Harmonization guidelines. The retention times for AML and HCZ are 3.93 ± 0.5 min and 2.61 ± 0.5 min respectively. The linearity range and percentage recoveries for AML and HCZ are 5-25μgml-1 for both drugs and 99.05, 98.73% respectively. The correlation coefficients for all components are close to 1. The relative standard deviations for three replicate measurements in three concentrations of samples in tablets are always less than 2%.
Rheological Characterization of Isabgol Husk, Gum Katira Hydrocolloids, and Their Blends
Vipin Kumar Sharma,Bhaskar Mazumder,Vinod Nautiyal
International Journal of Food Science , 2014, DOI: 10.1155/2014/506591
Abstract: The rheological parameters of Isabgol husk, gum katira, and their blends were determined in different media such as distilled water, 0.1?N HCl, and phosphate buffer (pH 7.4). The blend properties of Isabgol husk and gum katira were measured for four different percentage compositions in order to understand their compatibility in dispersion form such as 00?:?100, 25?:?50, 50?:?50, 75?:?25, and 100?:?00 in the gel strength of 1 mass%. The miscibility of blends was determined by calculating Isabgol husk-gum katira interaction parameters by Krigbaum and Wall equation. Other rheological properties were analyzed by Bingham, Power, Casson, Casson chocolate, and IPC paste analysis. The study revealed that the power flow index “p” was less than “1” in all concentrations of Isabgol husk, gum katira, and their blends dispersions indicating the shear-thinning (pseudoplastic) behavior. All blends followed pseudoplastic behavior at thermal conditions as 298.15, 313.15, and 333.15°K and in dispersion media such as distilled water, 0.1?N HCl, and phosphate buffer (pH 7.4). Moreover, the study indicated the applicability of these blends in the development of drug delivery systems and in industries, for example, ice-cream, paste, nutraceutical, and so forth. 1. Introduction Gums and mucilages are widely used natural materials for food and pharmaceutical industries. The natural materials have advantages over synthetic ones since they are chemically inert, nontoxic, less expensive, biodegradable, and widely available [1]. These can also be modified in different ways to obtain tailor-made materials and thus can compete with the available synthetic polymers. The importance of biocompatible and biodegradable hydrophilic polymers has wide applications in different fields such as polymer engineering, chemical engineering, pharmaceuticals, food, and agriculture because of their propensity to combine with others [2–4]. The blends of these biopolymers are also of significant importance and recently have been investigated for application in drug delivery systems and in the field of foods science [5, 6]. In the plastic industry, polyvinyl alcohol blends with agar and hydroxyethylcellulose have been investigated in order to improve the mechanical properties of biodegradable films [5]. Such blends showed superior performances over the conventional individual polymers and, consequently, the range of applications have grown rapidly for such class of materials. In the recent years, carbohydrate and biodegradable polymers have been extensively used to develop the controlled release
Achievable Secrecy Sum-Rate in a Fading MAC-WT with Power Control and without CSI of Eavesdropper
Shahid M. Shah,Vireshwar Kumar,Vinod Sharma
Mathematics , 2011,
Abstract: We consider a two user fading Multiple Access Channel with a wire-tapper (MAC-WT) where the transmitter has the channel state information (CSI) to the intended receiver but not to the eavesdropper (eve). We provide an achievable secrecy sum-rate with optimal power control. We next provide a secrecy sum-rate with optimal power control and cooperative jamming (CJ). We then study an achievable secrecy sum rate by employing an ON/OFF power control scheme which is more easily computable. We also employ CJ over this power control scheme. Results show that CJ boosts the secrecy sum-rate significantly even if we do not know the CSI of the eve's channel. At high SNR, the secrecy sum-rate (with CJ) without CSI of the eve exceeds the secrecy sum-rate (without CJ) with full CSI of the eve.
Combining molecular-marker and chemical analysis of Capparis deciduas (Capparaceae) in the Thar Desert of Western Rajasthan (India)
Sushil Kumar,Ramavtar Sharma,Vinod Kumar,Govind K. Vyas
Revista de Biología Tropical , 2013,
Abstract: The Thar Desert, a very inhospitable place, accommodates only plant species that survive acute drought, unpredictable precipitation, and those can grow in the limited moisture of sandy soils. Capparis decidua is among one of the few plants able to grow well under these conditions. This species is highly exploited and has been naturally taken, as local people use it for various purposes like food, timber and fuel, although, no management or conservation efforts have been established. The present study was conducted in this arid area of Western Rajasthan (India) with the aim to obtain preliminary molecular information about this group of plants. We evaluated diversity among 46 samples of C. decidua using chemical parameters and random amplified polymorphic DNA (RAPD) markers. Fourteen chemical parameters and eight minerals (total 22 variables) of this species fruits were estimated. A total of 14 RAPD primers produced 235 band positions, of which 81.27% were polymorphic. Jaccard s similarity coefficients for RAPD primers ranged from 0.34 to 0.86 with a mean genetic similarity of 0.50. As per observed coefficient of variation, NDF (Neutral Detergent Fiber) content was found to be the most variable trait followed by starch and soluble carbohydrate. The Manhattan dissimilarity coefficient values for chemical parameters ranged between 0.02-0.31 with an average of 0.092. The present study revealed a very low correlation (0.01) between chemical parameters and RAPD-based matrices. The low correlation between chemical- and RAPD-based matrices indicated that the two methods were different and highly variable. The chemical-based diversity will assist in selection of nutritionally rich samples for medicinal purpose, while genetic diversity to face natural challenges and find sustainable ways to promote conservation for future use. El desierto de Thar, un lugar muy inhóspito, alberga sólo a las especies de plantas capaces de resistir a condiciones de sequía extrema, a las precipitaciones impredecibles, y a las plantas que pueden crecer en la humedad limitada de los suelos arenosos. Capparis decidua se encuentra entre una las pocas plantas capaces de crecer bien en estas condiciones. Esta especie es altamente explotada y se ha tomado de forma natural, así los habitantes locales las han usado para varios propósitos, como alimento, madera y combustible, aunque sin ningún programa de manejo o esfuerzo por conservación. El presente estudio se llevó a cabo en esta zona árida del oeste de Rajastán (India) con el objetivo de obtener información molecular preliminar sobre este
Atopy and alopecia areata in North Indians
Sukhjot S,Sharma Vinod,Kumar Lata,Kumar Bhushan
Indian Journal of Dermatology, Venereology and Leprology , 2001,
Abstract: This study was undertaken with the aim of evaluating the effect of associated atopy on severity and age at onset of alopecia areata in north Indians. Presence of atopy was elicited by detailed history, examination and intracutaneous tests. Chisquare test was carried out to evaluate statistical significance. One hundred patients (76 males and 24 females) with alopecia areata were evaluated. Historical evidence of atopy was present in 50 including patients alone (23), Patients and first degree relatives (11) and first degree relatives alone (16). Intracutaneous tests were positive in 23 out of 50 patients tested randomly. There was a trend towards increasing frequency of severe alopecia as evidence of atopy became stronger e.g. both patient and first degree relative with atopy or positive intracutaneous test but results did not attain statistical significance.Similarly the onset and duration of alopecia areata was not significantly related to the presence of atopy. It is concluded that in north Indians with alopecia areata, the presence of atopy is not significantly associated with severe alopecia or onset at younger age.
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