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Mishra T.,Sam Higginbotom Institute of Agriculture | Garg D.,Thapar University | Gore M.M.,Motilal Nehru National Institute of Technology
Proceedings - 25th IEEE International Conference on Advanced Information Networking and Applications Workshops, WAINA 2011 | Year: 2011

Vehicular Ad-hoc Network (VANET) can be envisaged as the network of moving vehicles communicating in asynchronous and autonomous fashion. Efficient and scalable information dissemination is a major challenge due to the movement of vehicles which causes unpredictable changes in network topology. Publish/Subscribe communication paradigm provides decoupling in time, space and synchronization between communicating entities, making it most suitable for VANET like environments. In this paper, we propose our publish/subscribe framework for information dissemination in VANET. In our approach, we assumed a hybrid VANET consisting of stationary info-stations and moving vehicles where each vehicle can take the role of publisher, subscriber or broker. Every major crossing of city is equipped with stationary info-stations that act as ultimate place holders for publications and subscriptions. These info-stations are assumed to be connected to internet and form Distributed Hash Table (DHT) based broker overlay among themselves. They act as rendezvous point for publications and subscriptions and send matching publications to interested subscribers. Further, these info-stations also provide services for locating any vehicle in the network. Simulation results indicate that our approach performs well with increasing number of vehicles which suggests the applicability of our approach. © 2011 IEEE.


Ramteke P.W.,Sam Higginbotom Institute of Agriculture | Maurice N.G.,Sam Higginbotom Institute of Agriculture | Joseph B.,Shaqra University | Wadher B.J.,Rashtrasant Tukadoji Maharaj Nagpur University
Biotechnology and Applied Biochemistry | Year: 2013

Nitriles are organic compounds bearing a Cï £N group; they are frequently known to occur naturally in both fauna and flora and are also synthesized chemically. They have wide applicability in the fields of medicine, industry, and environmental monitoring. However, the majority of nitrile compounds are considered to be lethal, mutagenic, and carcinogenic in nature and are known to cause potential health problems such as nausea, bronchial irritation, respiratory distress, convulsions, coma, and skeletal deformities in humans. Nitrile-converting enzymes, which are extracted from microorganisms, are commonly termed nitrilases and have drawn the attention of researchers all over the world to combat the toxicity of nitrile compounds. The present review focuses on the utility of nitrile-converting enzymes, sources, classification, structure, properties, and applications, as well as the future perspective on nitrilases. © 2013 International Union of Biochemistry and Molecular Biology, Inc.


Singh R.,CSIR - Central Electrochemical Research Institute | Naskar J.,Sam Higginbotom Institute of Agriculture | Pathre U.V.,CSIR - Central Electrochemical Research Institute | Shirke P.A.,CSIR - Central Electrochemical Research Institute
Photochemistry and Photobiology | Year: 2014

The response and the functioning of the photosynthetic machinery of cotton, Gossypium hirsutum during water stress was studied by leaf optical properties, linear (ETRII) and cyclic electron flow (CEF) and chlorophyll a fluorescence. We observed that in G. hirsutum, during water limitation, Chlorophyll b showed the best correlation with reflectance at 731 nm and is a better indicator of drought. Fv/Fm was observed to be very insensitive to mild water stress. However, during severe water stress the leaves exhibit considerable inhibition in Fv/Fm and an increase in anthocyanin levels by about 20-fold. CEF was very responsive to mild water stress. The mild drought stress caused large decrease in the ability of the leaves to utilize the light energy. Photosystem I and photosystem II is protected from photoinhibition by high CEF and nonphotochemical quenching under mild water stress. While during severe drought stress, linear electron flow showed a sharp decrease in comparison to CEF. CEF play a major role in G. hirsutum leaves during mild as well as under severe water stress condition and is thus a good indicator of water stress. We observed that in Gossypium hirsutum, during water limitation, Chlorophyll b showed the best correlation with reflectance at 731 nm and is a good indicator of drought. During mild water stress photosystem I and photosystem II is protected from photoinhibition by high cyclic electron flow (CEF) and nonphotochemical quenching. While during severe drought stress, linear electron flow decreases sharply in comparison to CEF. CEF play a major role in G. hirsutum leaves during mild as well as under severe water stresses and is thus a good indicator of drought. © 2014 The American Society of Photobiology.


Pandey T.,Sam Higginbotom Institute of Agriculture | Garg D.,Thapar University | Gore M.M.,Motilal Nehru National Institute of Technology
The Scientific World Journal | Year: 2014

Publish/subscribe communication paradigm provides asynchrony and decoupling, making it an elegant alternative for designing applications in distributed and dynamic environment such as vehicular ad hoc networks (VANETs). In this paradigm, the broker is the most important component that decouples other two components, namely, publisher and subscriber. Previous research efforts have either utilized the deployment of distributed brokers on stationary road side info-stations or have assigned the role of broker to any moving vehicle on ad hoc basis. In one approach, lots of preinstalled infrastructures are needed whereas, in another, the quality of service is not guaranteed due to unpredictable moving and stopping patterns of vehicles. In this paper, we present the architecture of distributed mobile brokers which are dynamically reconfigurable in the form of structured P2P overlay and act as rendezvous points for matching publications and subscriptions. We have taken city buses in urban settings to act as mobile brokers whereas other vehicles are considered to be in role of publishers and subscribers. These mobile brokers also assist in locating a vehicle for successful and timely transfer of notifications. We have performed an extensive simulation study to compare our approach with previously proposed approaches. Simulation results establish the applicability of our approach. © 2014 Tulika Pandey et al.


Morya V.K.,Inha University | Singh Y.,Sam Higginbotom Institute of Agriculture | Singh B.K.,Inha University | Thomas G.,Sam Higginbotom Institute of Agriculture
Interdisciplinary Sciences: Computational Life Sciences | Year: 2015

Recombination is one of the keys factor in evolutionary processes, involved in shaping the architecture of genomes and consequent phenotype. Understanding the recombination phenomenon especially among viruses will help in disease management. The present study aimed for in-silico analysis of recombination phenomenon among Begomoviruses, particularly emphasizing on viruses strains reported from India and neighboring countries. A total of 956 virus sequences have been used in this study. The Tomato yellow leaf curl China viruses, namely giǀ29825986ǀ; gij283468151ǀ; giǀ190559151ǀ and giǀ61652782ǀ were identified with the highest number of recombination event (1273). However, the Mung bean yellow mosaic India virus (giǀ66351988ǀ) was found to have 1170 recombination event. The phylogenic analysis among the highly recombinant sequences was carried to get an insight of the evolution among viral sequences in this class of plant viruses. The phylogenetic analysis revealed a pattern in diversity among these virus strains and a split tree analysis showed diversity in the range of 0.049128335–10.269852. This in silico analysis may pave way for a greater understanding of recombination phenomenon in geminiviruses and it might be helpful for strategic plant viral disease management. © 2015, International Association of Scientists in the Interdisciplinary Areas and Springer-Verlag Berlin Heidelberg.


Pandey T.,Sam Higginbotom Institute of Agriculture | Garg D.,Thapar University | Gore M.M.,Motilal Nehru National Institute of Technology
Frontiers of Computer Science in China | Year: 2012

A vehicular ad-hoc network (VANET) can be visualized as a network of moving vehicles communicating in an asynchronous and autonomous fashion. Efficient and scalable information dissemination in VANET applications is a major challenge due to the movement of vehicles which causes unpredictable changes in network topology. The publish/ subscribe communication paradigm provides decoupling in time, space, and synchronization between communicating entities, and presents itself as an elegant solution for information dissemination for VANET like environments. In this paper, we propose our approach for information dissemination which utilizes publish/subscribe and distributed hash table (DHT) based overlay networks. In our approach, we assume a hybrid VANET consisting of stationary info-stations and moving vehicles. These info-stations are installed at every major intersection of the city and vehicles can take the role of publisher, subscriber, or broker depending upon the context. The info-stations form a DHT based broker overlay among themselves and act as rendezvous points for related publications and subscriptions. Further, info-stations also assist in locating vehicles that have subscribed to information items. We consider different possible deployments of this hybrid VANET with respect to the number of info-stations and their physical connectivity with each other. We perform Received August 22, 2011; accepted January 21, 2012 E-mail: tulika_mishra@rediffmail. com simulations to assess the performance of our approach in these different deployment scenarios and discuss their applicability in urban and semi-urban areas. © 2012 Higher Education Press and Springer-Verlag Berlin Heidelberg.


Tripathi P.,University of Lucknow | Kumar R.,University of Lucknow | Jain A.,University of Lucknow | Ramteke P.W.,Sam Higginbotom Institute of Agriculture
Clinical Epidemiology and Global Health | Year: 2016

Introduction: Acute encephalitis syndrome (AES) continues to occur in the state of Uttar Pradesh in northern India despite the vaccination drives against Japanese encephalitis (JE) in recent years. The prevalence of JE has decreased in other regions of the state which were hitherto the epicenter of this infection. Objective: To conduct a hospital based surveillance for JE from among children presenting with AES in Lucknow, the capital of Uttar Pradesh. Methodology: Children between 6 months and 14 years of age admitted with AES to the Childrens' wards of out teaching hospital in Lucknow, over a period of 29 months (July 2011-November 2013) were subjected to a standardized work up. IgM antibodies against JE in cerebrospinal fluid and serum were tested for by the Panbio Combo (JE & Dengue) kit and National Institute of Virology ELISA kit. Results: A total of 1586 patients with AES were admitted to the pediatric wards in the study period, of which 1070 were tested for JEV IgM and 238 (22.2%) were positive. JE positivity was found almost exclusively in monsoon and postmonsoon season and patients came from 22 surrounding districts. Conclusions: AES and JE continue to be an important cause of hospitalization in children in Lucknow, which highlights the need for further vaccination drives in this region. © 2015 INDIACLEN.


PubMed | Allahabad University and Sam Higginbotom Institute of Agriculture
Type: | Journal: Journal of biomarkers | Year: 2015

The prevalence of diabetes mellitus is rising all over the world. Uncontrolled state of hyperglycemia due to defects in insulin secretion/action leads to a variety of complications including peripheral vascular diseases, nephropathy, neuropathy, retinopathy, morbidity, and/or mortality. Large body of evidence suggests major role of reactive oxygen species/oxidative stress in development and progression of diabetic complications. In the present paper, we have discussed the recent researches on the biomarkers of oxidative stress during type 2 diabetes mellitus.


PubMed | Sam Higginbotom Institute of Agriculture
Type: Journal Article | Journal: Biotechnology and applied biochemistry | Year: 2013

Nitriles are organic compounds bearing a C N group; they are frequently known to occur naturally in both fauna and flora and are also synthesized chemically. They have wide applicability in the fields of medicine, industry, and environmental monitoring. However, the majority of nitrile compounds are considered to be lethal, mutagenic, and carcinogenic in nature and are known to cause potential health problems such as nausea, bronchial irritation, respiratory distress, convulsions, coma, and skeletal deformities in humans. Nitrile-converting enzymes, which are extracted from microorganisms, are commonly termed nitrilases and have drawn the attention of researchers all over the world to combat the toxicity of nitrile compounds. The present review focuses on the utility of nitrile-converting enzymes, sources, classification, structure, properties, and applications, as well as the future perspective on nitrilases.


PubMed | Thapar University, Motilal Nehru National Institute of Technology and Sam Higginbotom Institute of Agriculture
Type: | Journal: TheScientificWorldJournal | Year: 2014

Publish/subscribe communication paradigm provides asynchrony and decoupling, making it an elegant alternative for designing applications in distributed and dynamic environment such as vehicular ad hoc networks (VANETs). In this paradigm, the broker is the most important component that decouples other two components, namely, publisher and subscriber. Previous research efforts have either utilized the deployment of distributed brokers on stationary road side info-stations or have assigned the role of broker to any moving vehicle on ad hoc basis. In one approach, lots of preinstalled infrastructures are needed whereas, in another, the quality of service is not guaranteed due to unpredictable moving and stopping patterns of vehicles. In this paper, we present the architecture of distributed mobile brokers which are dynamically reconfigurable in the form of structured P2P overlay and act as rendezvous points for matching publications and subscriptions. We have taken city buses in urban settings to act as mobile brokers whereas other vehicles are considered to be in role of publishers and subscribers. These mobile brokers also assist in locating a vehicle for successful and timely transfer of notifications. We have performed an extensive simulation study to compare our approach with previously proposed approaches. Simulation results establish the applicability of our approach.

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