Vārānasi, India
Vārānasi, India

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Gravity and magnetic studies have been carried out to map the different depth formations of alluvium, Gondwana, Vindhyan, Mahakoshal, and the crystalline basement in the Narmada-Son lineament (NSL) near the Sahdol-Katni area, India. Higher elevations in the northern part of the study area have lower gravity; the southern part of the study area, however, is moderately elevated and also has a higher gravity anomaly, which justifies the isostatic adjustment. This indicates the presence of high-density material, for example Mahakoshal rocks, in the upper crust which causes the higher anomaly value. The Mahakoshal rocks are widely exposed at Mau, Chanaura, Nadawar, Khamaria, Umria, and near the Tala-Barhi area and also extend from Sidhi to Agoni village further east of the area. The Mahakoshal rocks are thinner between the river Son and Tikwa village which causes a different gravity anomaly pattern changing from the NNE-SSW direction to the N-S direction. However, the trend of magnetic anomaly follows the same pattern toward the NNE-SSW direction, mainly because of the effect of the crystalline basement. Two magnetic highs are prominent in the Tikwa and Amarpur regions, 800 and 400 nTesla, respectively, because of the presence of the crystalline basement. The depth of the crystalline basement obtained by 21/2 D gravity-magnetic modeling varies from 2.7 to 2.9 km. From spectral analysis the average depth of the crystalline basement varies from 2.83 to 3.05 km. The different crustal depth sections obtained by 21/2 D simultaneous gravity-magnetic modelling correlate well with other constrained data. © 2010 Springer Basel AG.

Agarwal S.,Teerthanker Mahaveer Medical College and Research Center | Agarwal A.,Teerthanker Mahaveer Medical College and Research Center | Khanna A.,Institute of Medical science | Singh K.,BHU
Journal of Human Reproductive Sciences | Year: 2015

CONTEXT: In majority of couples experiencing recurrent pregnancy loss (RPL), etiology is still unknown. Two genetic factors have been suggested to underlie miscarriage in a subset of patients, namely skewed X chromosome inactivation in females and Y chromosome microdeletions in their partners. In males, microdeletions of the Y chromosome are known to cause spermatogenetic failure and male infertility. AIMS: The aim of the study was to find out the role of Y chromosome microdeletion in male partners of couples experiencing RPL. SETTINGS AND DESIGN: University hospital and genetic laboratory. Prospective case-control study. SUBJECTS AND METHODS: 59 couples with a history of RPL and 20 fertile controls (FC) with no miscarriage were included in the study. The study subjects were divided into male partners of RPL couples with abnormal semen parameters (AS) (n = 8), and couples with normal semen parameters (NS) (n = 51). Fertile controls with normal semen parameters were (FC) (n = 20). Y chromosome microdeletion was performed on 40 male partners of RPL and 20 FC. STATISTICAL ANALYSIS USED: Chi-square test. P <0.05 were considered statistically significant. RESULTS: 13 of the 40 RPL cases showed deletion in three azoospermia factor loci on the long arm of Y chromosome. The P value was significant with Y chromosome microdeletion in RPL cases as compared to 20 FC where no Y chromosome microdeletion was present. CONCLUSIONS: Y chromosome microdeletion may be an important hidden cause of recurrent pregnancy miscarriage and can be offered to couples with the undiagnosed cause of miscarriage. © 2015 Journal of Human Reproductive Sciences | Published by Wolters Kluwer - Medknow.

Agarwal M.,BHU | Sharma A.,Banasthali Vidyapeeth
Journal of Health Management | Year: 2011

The study was conducted with the aim of investigating the effects of perception of the hospital workplace factors on the job satisfaction and psychological well-being of a sample of paramedical health care employees (N = 200) from a medical college (teaching) hospital and public (non-teaching) government-run hospitals. Statistical analysis of the data revealed that despite significant differences in perceived work-place factors, the reported levels of psychological well-being and job satisfaction of the participants were nearly similar in the two types of public hospitals. Stepwise regression analysis of the data revealed that the organization's structure-related factors, co-ordination and work autonomy were significantly predictive of job satisfaction and psychological well-being of health care employees, while the process-related workplace factors, participative decision making and intra-professional relations, emerged as significant predictors of psychological well-being and job satisfaction in both types of hospitals. Results have significant implications for public hospitals which are currently facing competition from the state-of-the-art health care technology being introduced by private hospitals, and are therefore under pressure for retention of skilled health care employees. © 2011 SAGE Publications.

Dental implants treatment have become a common modality of treatment nowadays for the replacement of missing tooth/teeth, but there have been failures due to a number of reasons; one of the rare problems is the fracture of the dental implants fixture. It is of prime importance to understand the type/system of the implant to be placed in a site and the amount and direction of occlusal forces incurred after the loading of prosthesis.

Mandai R.K.,Indian Institute of Technology BHU Varanasi | Tiwari R.S.,BHU | Singh D.,Panjab University | Singh D.,BHU
Materials Research Society Symposium Proceedings | Year: 2015

In this presentation, results of our recent investigations on the role of Ga on Al site in Zr69.5Al75.xGaxCu12Ni11 and Ce75Al25-xGax metallic glass compositions will be discussed. Ga like Al is normally expected to be in trivalent state. However, it may go in monovalent state depending on other alloying elements. The rapidly solidified melt spun ribbons of above two alloys gave rise to two important conclusions. The Zr69.5Al75-xGaxCu12Ni11 system displayed metallic glass formation in the range of x=0 to 7.5. In this process, we have come out with a new composition of glass without Al corresponding to x=7.5. In contrast to the above, for Ce-Al(Ga) system, we have observed phase separation in glass after dilute substitution of Ga. It seems that such a phase separation in this system cannot be understood in terms of summation of enthalpy of mixing of the various possible binaries in this system. The substitution of Ga in different valence states might have created chemical pressure leading to creation of two types of distinct major clusters. The phase separation may be due to this. This has also given rise to excursion of Ce 4f-states of the alloy. This and aforesaid 'chemical pressure' will be corroborated based on results of binary Ce-Al system under pressure by other investigators. © 2015 Materials Research Society.

Singh S.,BHU | Vishwakarma D.N.,BHU
International Conference on Microelectronics, Computing and Communication, MicroCom 2016 | Year: 2016

This paper presents a novel approach based on combined wavelet transform and artificial intelligence technique for estimating fault location in a series compensated transmission line. In proposed approach the samples of faulty current signals generated from simulink model are used for fault analysis. Wavelet transform is utilised for the purpose of feature extraction from the faulty current signals. The fault current signals are decomposed using Db5 mother wavelet. Features of faulty signals are extracted in terms of standard deviation and norm entropy value of the coefficients and are fed to designed artificial neural network (ANN) models for fault distance estimation. The paper also presents a comparison of error in estimating the distance of fault by different neural network i.e. Feed-forward, Cascade-forward and generalized regression neural network (GRNN). The preciseness and workability of the proposed algorithm has been evaluated on a 400 KV, 300 km series compensated transmission line for different fault cases using MATLAB simulation. The results acquired, indicate that the proposed approach can reliably located the faults points in series compensated transmission line with high accuracy. © 2016 IEEE.

Singh M.P.,Allahabad University | Pandey A.K.,Purvanchal University | Vishwakarma S.K.,Purvanchal University | Srivastava A.K.,Purvanchal University | And 2 more authors.
Cellular and Molecular Biology | Year: 2014

In the present investigation three species of Pleurotus i.e. P. sajor-caju (P1), P. florida (P2) and P. flabellatus (P3) along with two lignocellulosic substrates namely paddy straw and wheat straw were selected for evaluation of production of extracellular cellulolytic enzymes. During the cultivation of three species of Pleurotus under in vivo condition, the two lignocellulosic substrates were treated with plants extracts (aqueous extracts of ashoka leaves (A) and neem oil (B)), hot water (H) and chemicals (C).Among all treatments, neem oil treated substrates supported better enzyme production followed by aqueous extract of ashoka leaves, hot water and chemical treatment. Between the two substrates paddy straw supported better enzyme production than wheat straw. P. flabellatus showed maximum activity of exoglucanase, endoglucanase and β-glucosidase followed by P. florida and P. sajor-caju. © 2014.

Naik A.S.,BHU
Proceedings of the 16th International Association for Mathematical Geosciences - Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment: Challenges, Processes and Strategies, IAMG 2014 | Year: 2014

Coal has been the leading fuel in the energy industry.Its usage has shown far reaching consequences to health and environment.Occurrence of PAH in coal is well known fact but its effect to the human health is least addressed.It is one of the dangerous carcinogens with its ubiquitous presence in the environment.The present investigation on few coal samples reveals presence of substantial amount of PAH in the Mahanadi basin coalfields.Proper mitigation of this substance is required to ensure proper health of the miners and personnel in coal industry.Among the PAH reported are Anthracene, Benzo(a)pyrene, Phenanthrene and Pyrene etc.According to International Agency for Research on Cancer (IARC) a study in 1936 by investigators in Japan and England showed lung cancer mortality among workers in coal carbonization and gasification processes.Later on studies in US was carried on coke oven workers which confirmed the lung cancer mortality, with the suggestion of excessive genitourinary system cancer mortality.Given these implications this investigation attempts to address PAH in the coals of Mahanadi basin. © 2014, Capital Publishing Company.

Singh V.,CSIR - Central Electrochemical Research Institute | Kaushal D.C.,Amity University | Rathaur S.,BHU | Kumar N.,CSIR - Central Electrochemical Research Institute | Kaushal N.A.,CSIR - Central Electrochemical Research Institute
Protein Expression and Purification | Year: 2012

Plasmodial lactate dehydrogenase, key enzyme of anaerobic glycolysis, has been shown to be a potential immunodiagnostic marker as well as a novel target for chemotherapy. We have cloned, overexpressed and immunochemically characterized the recombinant lactate dehydrogenase of Plasmodium knowlesi, the fifth human malaria parasite. The P. knowlesi lactate dehydrogenase (PkLDH) gene was PCR amplified and 0.9 kb PCR product was cloned into pGEM-T Easy vector. Sequencing and BLAST analysis revealed open reading frame of 316 amino acids of PkLDH showing 96.8% homology with Plasmodium vivax LDH and around 90% with Plasmodium falciparum, Plasmodium malariae and Plasmodium ovale LDHs. The PkLDH gene was subcloned into pGEX-6P1 expression vector and the SDS-PAGE analysis revealed that about 70% of fusion protein was present in the soluble fraction. The fusion protein was cleaved with PreScission protease and recombinant PkLDH (34 kDa) was affinity purified to homogeneity. The purified PkLDH exhibited high reactivity with polyclonal and monoclonal antibodies against plasmodial LDH. The polyclonal antibody produced against purified recombinant PkLDH in rabbits showed high ELISA reactivity with both native and recombinant PkLDH and could detect parasite LDH in malaria infected blood samples by sandwich ELISA. The purified recombinant PkLDH can be used to produce P. knowlesi specific monoclonal antibodies for specific diagnosis of P. knowlesi infection in humans. © 2012 Published by Elsevier Inc.

Since the Precambrian time the Narmada-Son Lineament (NSL) is a zone of weakness and both the northern and southern portions of Narmada-Son Lineament experienced vertical block movements. It is established by the earlier workers that NSL is a sub-crustal feature which is responsible for the deposition and folding of the Vindhyans (Meso- Neoproterozoic) and Gondwanas (Permo-Carboniferous-lower Cretaceous). Recent tectonic activity in the Narmada- Son region is evidenced by high heat flow thermal activity, sulphur springs and seismically the Narmada-Son Lineament region is known to be a significantly disturbed zone. The present study area is the part of Narmada-Son Lineament zone. The drainage geomorphology of the area between Kanahar and Rihand rivers (tributaries of the tectonically controlled Son river) around Renukoot area have been studied aiming to understand active tectonics of the region, integrating detailed analysis of landforms and drainages. Various geomorphic features present in the study area such as incision of valley, aligned drainage, aligned valleys, linear valleys, offset channels, offset ridges and fault scarps demonstrate that the area is undergoing active deformation. © 2014, Geological Society of India.

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