Bareilly, India
Bareilly, India

Time filter

Source Type

Sharma C.,Rohilkhand University | Tomar S.K.,Dehradun Institute of Technology | Gupta A.K.,National Institute of Technology Kurukshetra
WSEAS Transactions on Communications | Year: 2011

In this paper we propose the Peak to Average Power ratio reduction (PAPR) in OFDM using adapting coding technique with pre-distortion method to decrease the nonlinear distortion and to improve the power efficiency of the non-linear high power amplifier (HPA). In the proposed method adaptive coding is used for error correction as well as PAPR reduction. The pre-distorter improves the bit error rate performance of the system.


Gupta A.,Rohilkhand University | Dubey K.K.,Invertis University
Proceedings of the 2013 3rd IEEE International Advance Computing Conference, IACC 2013 | Year: 2013

This paper introduces a state of art compressor for DNA sequences that makes use of a replacement method. The replacement method introduces words and a word based compression scheme is used for encoding. The encoder uses frequency distribution for assigning the code of words. The designed statistical compression algorithm is efficient and effective for DNA sequence compression. Experiments show that our algorithm is shown to outperform existing compressors on typical DNA sequence datasets. © 2013 IEEE.


Mishra A.,IFTM University | Gupta A.,Rohilkhand University
Proceedings on 2015 1st International Conference on Next Generation Computing Technologies, NGCT 2015 | Year: 2015

In last one decade, the secret sharing schemes get utmost importance because of their possibility to use in variety of applications. Visual secret sharing also known as visual cryptography (VC) is an extension of secret sharing scheme. Visual cryptography has many uses if secret is to revealed through human eyes, as it is not always possible to use electronic device for decoding the secrets. In this paper, we propose a partition based visual cryptography scheme scheme which is useful for those images which are large in size and making the transparencies for the shares are practically infeasible. The proposed scheme uses a method of partitioning where input image is divided into independent segments and each segment undergoes to visual cryptography encoding. The experimental results shows the efficacy of proposed system. © 2015 IEEE.


Singh R.,Rohilkhand University
2016 6th International Workshop on Computer Science and Engineering, WCSE 2016 | Year: 2016

The transmission link failures are common in wireless sensor network because the sensor nodes are deployed in hostile environment, so it is necessary to maintain dynamic topology to monitor the link quality, which leads to reduce the network lifetime due to increase in communication overheads. Hence energy efficient BUCAN (Balanced Unequal Clustering Algorithm under Noisy environment) has been proposed here to extend the network lifetime of WSNs. The stable and energy efficient approach is proposed here to form unequal clusters using BinInv method to solve the hotspot region problem, thereafter selects the optimal cluster head (CH) to prolong the network lifetime, which utilizes fuzzy logic for handling uncertainties in CH radius estimation, taking into account the factors such as the remaining energy, surrounding noise and the localization of nodes. At last, an efficient hierarchal routing scheme has been proposed to deliver the dynamically compressed data to base station which estimates the link quality by considering signal strength of the multi hope route. The simulated result demonstrates that our proposed algorithm has significant effectiveness in terms of balancing energy consumption as well as maximizing the network lifetime under the same routing criteria better than other traditional algorithms.


Mishra A.,IFTM University | Gupta A.,Rohilkhand University
Advances in Intelligent Systems and Computing | Year: 2016

An extended visual cryptography scheme (EVCS) is a category of visual cryptography scheme (VCS) in which secret image is encoded into multiple shares of meaningful images. It has two additional images which are covering shares by the end of the encoding process. These meaningful shares are created by different approaches. The purpose of cover images (meaningful images) is to hide the secret image under it. In this paper, we propose an extended visual cryptography scheme with cover images using half toning method. The half toning method we designed for conversion of gray level image into binary image is based on dithering. The obtained half toned image is transformed into multiple shares that are distributed to the participants. These shares are finally covered with some cover images to obtain meaningful shares. The experimental results and analysis show that the proposed scheme has satisfactory results. © Springer Science+Business Media Singapore 2016.


Arora P.K.,Yeungnam University | Mohanta T.K.,Yeungnam University | Srivastava A.,Rohilkhand University | Bae H.,Yeungnam University | Singh V.P.,Rohilkhand University
Microbial cell factories | Year: 2014

A degradation pathway of 2-chloro-4-aminophenol (2C4AP) was studied in an Arthrobacter sp. SPG that utilized 2C4AP as its sole source of carbon and energy. The 2C4AP degradation was initiated by a 2C4AP-deaminase that catalyzed the conversion of 2C4AP into chlorohydroquinone (CHQ) with removal of ammonium ion. In the next step, a CHQ-dehalogenase dehalogenated CHQ to hydroquinone (HQ) that cleaved into γ-hydroxymuconic semialdehyde by a HQ-dioxygenase. The 2C4AP degradation was also investigated in sterile and non-sterile soil microcosms using strain SPG. The results show that the SPG cells degraded 2C4AP more rapidly in sterile soil than non-sterile soil. Our studies showed that strain SPG may be used for bioremediation of 2C4AP-contaminated sites. This is the first report of the 2C4AP degradation by any bacteria.


Arora P.K.,Rohilkhand University | Srivastava A.,Rohilkhand University | Singh V.P.,Rohilkhand University
Journal of Hazardous Materials | Year: 2014

This review intends to provide an overview of bacterial degradation of nitrophenols (NPs) and their derivatives. The main scientific focus is on biochemical and genetic characterization of bacterial degradation of NPs. Other aspects such as bioremediation and chemotaxis correlated with biodegradation of NPs are also discussed. This review will increase our current understanding of bacterial degradation of NPs and their derivatives. © 2013 Elsevier B.V.


Arora P.K.,Rohilkhand University | Srivastava A.,Rohilkhand University | Singh V.P.,Rohilkhand University
Environmental Science and Pollution Research | Year: 2014

Burkholderia sp. RKJ 800 utilized 4-chloro-2-aminophenol (4C2AP) as the sole carbon and energy source and degraded it with release of chloride and ammonium ions. The metabolic pathway of degradation of 4C2AP was studied and a novel intermediate, 4-chlorocatechol was identified as a major degradation product of 4C2AP using high-performance liquid chromatography and gas chromatography-mass spectrometry. Enzyme activities for 4C2AP-deaminase and 4-chlorocatechol-1,2-dioxygenase were detected in the crude extracts of the 4C2AP-induced cells of strain RKJ 800. The activity of the 4C2AP-deaminase confirmed the formation of 4-chlorocatechol from 4C2AP and the 4-chlorocatechol-1,2-dioxygenase activity suggested the cleavage of 4-chlorocatechol into 3-chloro-cis,cis-muconate. On the basis of the identified metabolites, we have proposed a novel degradation pathway of 4C2AP for Burkholderia sp. RKJ 800. Furthermore, the potential of Burkholderia sp. RKJ 800 to degrade 4C2AP in soil was also investigated using microcosm studies under laboratory conditions. The results of microcosm studies conclude that Burkholderia sp. RKJ 800 was able to degrade 4C2AP in soil and may be used to remediate 4C2AP-contaminated site. This is the first report of (1) the formation of 4-chlorocatechol and 3-chloro-cis,cis-muconate in the degradation pathway of 4C2AP and (2) bioremediation of 4C2AP by any bacterium. © 2013 Springer-Verlag Berlin Heidelberg.


Singh S.,Central Avian Research Institute | Yadav A.S.,Central Avian Research Institute | Singh S.M.,Rohilkhand University | Bharti P.,Central Avian Research Institute
Food Research International | Year: 2010

An investigation was carried out to study the dynamics of Salmonella occurrence in chicken eggs during production at farm level and subsequently in marketing channels (both whole sale and retail markets) in north India and to select an effective antimicrobial agent for the control of Salmonella in poultry birds. A total of 560 chicken eggs comprising 260 from poultry farms and 300 from marketing channels were collected and screened for the presence of Salmonella during the period of April 2006 to July 2007. Twenty seven (4.82%) of the samples tested were found to be positive for Salmonella. Among the chicken eggs from poultry farms and marketing channels, 10 (3.84%) and 17 (5.5%) eggs were positive for Salmonella, respectively. Among the isolates, S. Typhimurium was the predominant serovar. Antibiogram testing revealed multi-drug resistance among Salmonella isolates from chicken eggs collected from poultry farms and marketing channels in north India. All the isolates were resistant to bacitracin, polymyxin-B and colistin, whereas sensitivity was recorded for ciprofloxacin, streptomycin and enrofloxacin. © 2010 Elsevier Ltd.


Gangwar S.,Rohilkhand University | Singh V.P.,Allahabad University | Srivastava P.K.,Allahabad University | Maurya J.N.,Rohilkhand University
Acta Physiologiae Plantarum | Year: 2011

Effects of exogenous gibberellic acid (GA; 10 and 100 μM) application on growth, protein and nitrogen contents, ammonium (NH4 +) content, enzymes of nitrogen assimilation and antioxidant system in pea seedlings were investigated under chromium (VI) phytotoxicity (Cr VI; 50, 100 and 250 μM). Exposure of pea seedlings to Cr and 100 μM GA resulted in decreased seed germination, fresh and dry weight and length of root and shoot, and protein and nitrogen contents compared to control. Compared to control, Cr and 100 μM GA led to the significant alteration in nitrogen assimilation in pea. These treatments decreased root and shoot nitrate reductase (NR), glutamine synthetase (GS) and glutamine 2-oxoglutarate aminotransferase (GOGAT) activities (except 50 μM Cr alone for GOGAT) while glutamate dehydrogenase (GDH) activity and NH4 + content increased. Compared to control, the root and shoot activities of superoxide dismutase (SOD) and ascorbate peroxidase (APX) increased (except APX activity at 250 μM Cr + 100 μM GA) while catalase (CAT), glutathione reductase (GR) and dehydroascorbate reductase (DHAR) activities were decreased (except GR at 100 μM GA alone) following exposure of Cr and 100 μM GA. Total ascorbate and total glutathione in root and shoot decreased by the treatments of Cr and 100 μM GA while their levels were increased by the application of 10 μM GA compared to Cr treatments alone. It has been reported that application of 10 μM GA together with Cr alleviated inhibited levels of growth, nitrogen assimilation and antioxidant system compared to Cr treatments alone. This study showed that application of 10 μM GA counteracts some of the adverse effects of Cr phytotoxicity with the increased levels of antioxidants and sustained activities of enzymes of nitrogen assimilation; however, 100 μM GA showed apparently reverse effect under Cr phytotoxicity. © 2010 Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków.

Loading Rohilkhand University collaborators
Loading Rohilkhand University collaborators