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Search Results: 1 - 10 of 21834 matches for " Yaman Kumar Sahu "
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Combustion Characteristics of Sewage Sludge and Algae  [PDF]
Yaman Kumar Sahu, Pravin Kumar Sahu, Suryakant Chakradhari, Khageshwar Singh Patel
Natural Resources (NR) , 2016, DOI: 10.4236/nr.2016.74019
Abstract: Sewage sludge is a good source of energetically desirable compounds and green algae in developing country like India. In this work, the combustion characteristics of sewage sludge and green algae are described. The calorific value (CV) of dried sewage sludge (n = 7) and green algae (n = 11) was ranged from 1800 to 6250 and 3700 to 6280 kcal/kg with mean value of 3999 ± 1347 and 4428 ± 547 kcal/kg, respectively. The effect of proximate variables and water quality parameters in the CV of sludge and algae are discussed.
Fluoride Contamination of Groundwater and Skeleton Fluorosis in Central India  [PDF]
Ankit Yadav, Yaman Kumar Sahu, Keshaw Prakash Rajhans, Pravin Kumar Sahu, Suryakant Chakradhari, Bharat Lal Sahu, Shobhana Ramteke, Khageshwar Singh Patel
Journal of Environmental Protection (JEP) , 2016, DOI: 10.4236/jep.2016.76071

In country like India, the groundwater is widely used for drinking purposes. In central India, the groundwater is hard and contaminated with F- and other elements above the permissible limits and found to be linked with prevalence of the fluorosis diseases. In this work, the groundwater quality Balod district, Chhattisgarh, India is investigated for assessment of water quality for drinking purposes. The concentration (n = 50) of F- was ranged from 1.5 - 14.0 mg/L with mean value of 3.9 ± 0.8 mg/L. The causes of prevalence of skeleton fluorosis in human of the studied area are described.

Tilted Bianchi Type VI0 Cosmological Model in Saez and Ballester Scalar Tensor Theory of Gravitation  [PDF]
Subrata Kumar Sahu
Journal of Modern Physics (JMP) , 2010, DOI: 10.4236/jmp.2010.11008
Abstract: Tilted Bianchi type VI0 cosmological model is investigated in a new scalar tensor theory of gravitation pro-posed by Saez and Ballester (Physics Letters A 113:467, 1986). Exact solutions to the field equations are derived when the metric potentials are functions of cosmic time only. Some physical and geometrical proper-ties of the solutions are also discussed.
Finite Temperature Asymmetric Nuclear Matter Using Pion Dressing  [PDF]
Saroj Kumar Sahu
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.310159
Abstract: We study the asymmetric nuclear matter in a nonperturvative manner at finite temperatures using thermofield dynamics method. The nucleon-meson interaction is taken to examine the binding energy (EB), pressure (P) for various proton fractions.
Economics of Yield and Production of Alkaloid of Withania somnifera (L.) Dunal  [PDF]
Atul Kumar Shrivastava, Pankaj K. Sahu
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.410253

The yield parameters and cost economics of Withania somnifera were studied using Integrated Nutrient Management (INM) treatments. Withania somnifera is cultivated in around 10,780 ha with a production of 8429 tones in India. The annual demand of this herb increased from 7028 tones (2001-2002) to 9127 tones (2004-2005). The field experiment was conducted at the research farm of Department of Plant Physiology, College of Agriculture, Jabalpur during Kharif season of 2008-2009 (1st year) and 2009-2010 (2nd year), whereas the laboratory work was carried out in Quality Laboratory, College of Agriculture, Jabalpur. The soil of experimental field was sandy loam in texture with pH 7.5, EC 0.18 dsm-1 having good drainage. Soil analysis revealed that available nitrogen was low (202.0 kg·ha-1) whereas available phosphorus

Amit Kumar,Radha Sahu
Bioscience Discovery , 2012,
Abstract: The ecological study of the sewage stabilization pond of HEC area, Hatia, Ranchi has been taken for the first time in this area. Studies were conducted to determine the occurrence and abundance of cyanobacteria in relation to physico-chemical characteristics of sewage pond. It assumes significance of algae mostly cyanobacteria can be used as bioindicators of water pollution in different water habitat of the area. Increased eutrophication from domestic effluent, sewage promotes the development of algal bloom. This study indicates the maximum occurrence and abundance of Microcystis, Oscillatoria, and phormidium spp. in all sites of the sewage pond. The physico-chemical analysis shows maximum nitrogen up to 35.4 mg l-1, 4.8 mg l-1 phosphate, 147.131 mg l-1 chloride and alkaline nature of water throughout the year favour the growth of cyanophycean members and promote algal bloom formation of Microcystis aeruginosa, O.princeps and O.tenuis in this pond.
Study of the properties of dense nuclear matter and application to some astrophysical systems
Pradip Kumar Sahu
Physics , 1995,
Abstract: The highlights and main results of this work can be summarized as follows : (1) The energy per nucleon of cold nuclear matter, derived by us using chiral sigma model, is in good agreement with the preliminary estimates inferred from heavy-ion collision data in the density range between one to four times the nuclear saturation density. (2) For a system of high density nuclear matter, based on the chiral sigma model, we find that a strict first order phase transition to quark matter is not favoured. This does not, of course, preclude a phase transition of second order. However, we have not investigated the latter problem. (3) The mass formulae for finite lumps of strange quark matter with $u,~d$ and $s$ quarks and non-strange quark matter are derived in a non-relativistic approach, taking into account the finite size effects such as surface and curvature. We find that there is a good possibility for the formation of metastable strangelets of large mass detectable in experiment. (4) The maximum mass for stable neutron stars predicted by our equation of state for ($n,~p,~e$) matter is 2.59 times the solar mass. The corresponding radius ($R$), crustal length ($\Delta$) and surface red shift ratio ($\alpha$) are 14.03 $km$, 1.0 $km$ and 0.674 respectively. The maximum moment of inertia is $4.79 \times 10^{45}~g~cm^{2}$. These suggest that our equation of state for neutron star matter is comparatively ``stiff". (5) The neutrino emissivity from two and three flavour quark matter is numerically calculated and compared with the result given by Iwamoto. We find that the emissivity is smaller than Iwamoto's result by about two orders of magnitude when $p_{f}(u)+p_{f}(e)-p_{f}(d(s))$ is comparable to the temperature. We attribute this to the severe restriction imposed by momentum conservation on the phase
Bufferless NOC Simulation of Large Multicore System on GPU Hardware
Navin Kumar,Aryabartta Sahu
Computer Science , 2015,
Abstract: Last level cache management and core interconnection network play important roles in performance and power consumption in multicore system. Large scale chip multicore uses mesh interconnect widely due to scalability and simplicity of the mesh interconnection design. As interconnection network occupied significant area and consumes significant percent of system power, bufferless network is an appealing alternative design to reduce power consumption and hardware cost. We have designed and implemented a simulator for simulation of distributed cache management of large chip multicore where cores are connected using bufferless interconnection network. Also, we have redesigned and implemented the our simulator which is a GPU compatible parallel version of the same simulator using CUDA programming model. We have simulated target large chip multicore with up to 43,000 cores and achieved up to 25 times speedup on NVIDIA GeForce GTX 690 GPU over serial simulation.
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%.
Optimization of Diffraction Efficiency and Polarization Dependence Loss in Photopolymer Grating for Use in Multichip Module  [PDF]
Lingaraj Sahu, J. Surya Narayana Achary, Sukanta Kumar Tripathy
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.39131
Abstract: We in this paper propose a model to increase the diffraction efficiency of a holographic grating at 1550 nm for multiplexing application. To use such a grating, polarization dependence loss is introduced analytically and then optimized for its minimum value A configuration of holographic grating is proposed based on both maximum diffraction efficiency and minimum polarization dependence loss. The proposed grating is expected to find importance in optoelectronic multichip module.
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