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维生素E-硒结合体可提高传染性法氏囊病毒感染鸡的免疫力

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国外畜牧科技 1996年第2期23卷 53-53页

作者： s.k.panda 祁保民

许多实验结果表明维生素 E-硒结合体对免疫系统的发育及维持起着重要作用。本文报道了添加维生素 E-硒对1日龄 IBD 病毒感染鸡的影响。实验中用流产布氏杆菌抗原作为指示系统。将90只1日龄雏公鸡分成6组,其亲代经琼扩检测 IBD 抗体均为... 详细信息

许多实验结果表明维生素 E-硒结合体对免疫系统的发育及维持起着重要作用。本文报道了添加维生素 E-硒对1日龄 IBD 病毒感染鸡的影响。实验中用流产布氏杆菌抗原作为指示系统。将90只1日龄雏公鸡分成6组,其亲代经琼扩检测 IBD 抗体均为阴性,

关键词：维生素E 硒鸡病 IBD 免疫力

soret and Dufour effects on mixed convection unsteady MHD boundary layer flow over stretching sheet in porous medium with chemically reactive species

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Applied Mathematics and Mechanics(English Edition) 2014年第7期35卷 849-862页

作者： A.NAYAk s.panda D.k.PHUkAN silicon Institute of Technology Bhubaneswar 751024 India Department of Mathematics National Institute of Technology Calicut 673601 India Department of Mathematics Moran College Moranhat Assam 785670 India

This paper studies the thermal-diffusion and diffusion thermo-effects in the hydro-magnetic unsteady flow by a mixed convection boundary layer past an imperme- able vertical stretching sheet in a porous medium in the presence of chemical reaction. The velocity of t^he stretching surface, the surface temperature, and the concentration are assumed to vary linearly with the distance along the surface. The governing partial differential equations are transformed into self-similar unsteady equations using similarity transformations .and solved numerically by the Runge-kutta fourth order scheme in as- sociation with the shooting method for the whole transient domain from the initial state to the final steady state flow. Numerical results for the velocity, the temperature, the concentration, the skin friction, and the Nusselt and sherwood numbers are shown graph- ically for various flow parameters. The results reveal that there is a smooth transition of flow from unsteady state to the final steady state. A special case of our results is in good agreement with an earlier published work.

关键词： heat and mass transfer boundary layer flow porous media magnetic field,soret number Dufour number

Characterization of electrical properties of AlGaN/GaN interface using coupled schrodinger and Poisson equation

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Journal of semiconductors 2012年第11期33卷 16-23页

作者： s.Das A.k.panda G.N.Dash National Institute of science and Technology Palur HillsBerhampurOdisha761008India

The electrical characterization of AlGaN/GaN interface is *** dependence of two-dimensional electron gas（2-DEG） density at the interface on the Al mole fraction and thickness of AIGaN layer as well as on the thickness of GaN cap layer is *** information can be used to design and fabricate AlGaN/GaN based MODFET（modulation doped field effect transistor） for optimum DC and RF characteristics.

关键词： MODFET 2-DEG polarization critical thickness self-heating

Proton emission from the drip-line nuclei I-Bi using the WkB approximation with relativistic mean-field densities

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Chinese Physics C 2019年第4期43卷 89-99页

作者： T.sahoo R.N.panda s.k.Patra Physics Department Veer Surendra Sai University of Technology Department of Physics Siksha O Anusandhan Deemed to be University Institute of Physics Homi Bhaba National Institute

We study the properties of proton rich nuclei reported as proton emitters in the region from I to Bi with Z =53 to 83 and N = 56 to 102 as a crucial application to the existence of exotic nuclei. The effective relativistic meanfield formalism(E-RMF), with NL3, FsUGarnet, G3 and IOPB-I interactions, is adopted for analysis of the ground state properties of proton emitters. Furthermore, in the E-RMF background, the Wentzel-karmers-Brillouin(WkB)barrier penetration method is used for the calculation of proton emission half-lives. It is found that the calculated halflives are in good agreement with the experimental results for all emitters considered in this study.

关键词： effective relativistic mean-field theory nuclear drip line exotic nucleus double folding model Wentzelkarmers-Brillouin approximation

Hydrodynamics of gas-solid fluidization of a homogeneous ternary mixture in a conical bed:Prediction of bed expansion and bed fluctuation ratios

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Particuology 2013年第6期11卷 681-688页

作者： D.T.k.Dora s.R.panda Y.k.Mohanty G.k.Roy Department of Chemical Engineering Gandhi Institute of Engineering and Technology(GIET) Department of Chemical Engineering National Institute of Technology(NIT)

Hydrodynamic characteristics of fluidization in a conical or tapered bed differ from those in a columnar bed because the superficial velocity in the bed varies in the axial direction. Fixed and fluidized regions could coexist and sharp variations in pressure drop could occur, thereby giving rise to a noticeable pressure drop-flow rate hysteresis loop under incipient fluidization conditions. To explore these unique properties, several experiments were carried out using homogeneous, well-mixed, ternary mixtures with three dif- ferent particle sizes at varying composition in gas-solid conical fluidized beds with varying cone angles. The hydrodynamic characteristics determined include the minimum fluidization velocity, bed fluctuation, and bed expansion ratios. The dependence of these quantities on average particle diameter, mass fraction of the fines in the mixture, initial static bed height, and cone angle is discussed. Based on dimensional analysis and factorial design, correlations are developed using the system parameters, i.e. geometry of the bed （cone angle）, particle diameter, initial static bed height, density of the solid, and superficial velocity of the fluidizing medium. Experimental values of minimum fluidization velocity, bed fluctuation, and bed expansion ratios were found to agree well with the developed correlations.

关键词： Gas-solid fluidization Conical bed Homogeneous ternary mixtures Bed fluctuation ratio Bed expansion ratio

Non-alcoholic fatty liver disease may not be a severe disease at presentation among Asian Indians

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World Journal of Gastroenterology 2006年第21期12卷 3400-3405页

作者： kaushal Madan Yogesh Batra s Datta Gupta Bal Chander k D Anand Rajan M s Tewatia s.k.panda s k Acharya Department of Gastroenterology All India Institute of Medical sciences New DelhiIndia Department of Gastroenterology All India Institute of Medical sciences New DelhiIndia Department of PathologyAll India Institute of Medical SciencesNew DelhiIndia Department of Pathology All India Institute of Medical sciences New DelhiIndia

AIM： To evaluate the clinical and biochemical profile of patients with non alcoholic fatty liver disease （NAFLD） and to assess their histological severity at ***： Consecutive patients presenting to the liver clinic of All India Institute of Medical sciences （AIIMs） with raised transaminases to at least 1.5 times upper limit of normal, and histologically confirmed non-alcoholic fatty liver disease were included. Patients who had significant alcohol intake or positive markers of other liver diseases or who were taking drugs known to produce fatty liver were excluded. The clinical, biochemical and histological profile of this group was studied. REsULTs： Fifty-one patients with NAFLD formed the study population. Their median age and BMI were 34（17-58） years and 26.7（21.3-32.5） kg/m^2 respectively and 46 （90.1%） were males. The majority of the patients had mild inflammation, either grade 1 [32 （63%）] or grade 2 [16 （31%）] and only 3 （6%） patients had severe （grade 3） inflammation. Twenty-three （45%）, 19 （37%）, 8（16%） and 1（2%） patient had stage 0, 1, 2 and 3 fibrosis respectively on index biopsy and none had cirrhosis. On univariate analysis, triglyceride levels more than 150 mg % （OR = 7.1; 95% CI： 1.6-31.5, P = 0.002） and AsT ALT ratio 〉 1 （OR = 14.3; 95% CI： 1.4-678.5, P = 0.008） were associated with high grades of inflammation and none was associated with advanced fibrosis. On multivariate logistic regression analysis, hypertriglyceridemia 〉150 mg% was the only factor independently associated with presence of high grade of inflammation （OR = 1.6; 95% CI： 1.3-22.7, P =0.02）, while none was associated with advanced fibrosis. Triglyceride levels correlated positively with inflammatory grade （r = 0.412; P = 0.003）. CONCLUsION： NAFLD in North Indian patients is a disease of young over-weight males, most of whom are insulin resistant and they tend to have a mild histological disease at presentation.

关键词： Inflammation Fibrosis Triglycerides Non alcoholic steatohepatitis

Nuclear structure study of some bubble nuclei in the light mass region using mean field formalism

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Chinese Physics C 2015年第6期39卷 47-53页

作者： Mahesh k.sharma R.N.panda Mano j k.sharma s.k.Patra school of Physics and Material sciences Thapar University

We study the structural properties of some light mass nuclei using two different formalisms(i) a recently developed simple effective interaction in the frame work of microscopic non-relativistic Hartree-Fock method and(ii)the well-known relativistic mean field approach with NL3 parameter set. The bulk properties like binding energy, root mean square radii and quadrupole deformation parameter are estimated and compared with the available experimental data. The predicted results of both the formalisms are well comparable with the experimental observations. The analysis of density profiles of these light mass nuclei suggest that22 O,23F,34 si and46Ar have bubble like structure.

关键词： binding energy charge radius relativistic mean field simple effective interaction non-relativistic mean fields

Constraining the relativistic mean-field models from PREX-2 data:effective forces revisited

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Chinese Physics C 2022年第9期46卷 218-231页

作者： Jeet Amrit Pattnaik R.N.panda M.Bhuyan s.k.Patra Department of Physics Siksha'O'AnusandhanDeemed to be UniversityBhubaneswar-751030India Center of theoretical and Computational Physics Department of PhysicsUniversity of MalayaKuala Lumpur50603Malaysia Institute of Physics Sachivalya MargBhubaneswar-751005India Homi Bhabha National Institute Training School ComplexAnushakti NagarMumbai 400094India

Based on the current measurement of the neutron distribution radius(R_(n))of ^(208)Pb from the PREX-2 data,we revisited the recently developed G3 and IOPB-I force parameters by fine-tuning some specific couplings within the relativistic mean-field(RMF)***ω-ρ-mesons coupling and theρ-meson coupling are constrained to the experimental neutron radius of^(208)Pb without compromising the bulk properties of finite nuclei and infinite nuclear matter *** modified parameter sets are applied to calculate the gross properties of finite nuclei such as binding energies,charge distributions,nuclear radii,pairing gaps,and single-particle *** root-mean-square deviations in binding energy and charge radius are estimated with respect to the available experimental data for 195 even-even nuclei,and the results compare favourably with the well-calibrated effective interactions of skyrme,Gogny and other relativistic mean-field *** pairing gap estimations for modified G3 and IOPB-I for sn isotopes are also compared with the Hartree-Fock-Bogoliubov calculation with the Gogny(D1s)*** isotopic shift and single-particle energy spacing are also calculated and compared with the experimental data for both original and modified versions of the G3 and IOPB-I parameter ***,both the modified parameter sets are used to obtain the various infinite nuclear matter observables at *** addition to these,the force parameters are adopted to calculate the properties of a high isospin asymmetry dense system such as neutron star matter and tested for validation using the constraint from GW170817 binary neutron star merger *** tuned forces predict relatively good results for finite and infinite nuclear matter systems and the current limitation on the neutron radius from PREX-2.A systematic analysis using these two refitted parameter sets over the nuclear chart will be communicated shortly.

关键词： relativistic mean field model binding energy charge distribution radius neutron-skin thickness PREX-2

Bioleaching of copper from pre and post thermally activated low grade chalcopyrite contained ball mill spillage

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Frontiers of Environmental science & Engineering 2013年第2期7卷 281-293页

作者： sandeep panda Nilotoala PRADHAN Umaballav MOHAPATRA sandeep k. panda swagat s.RATH Danda s. RAO Bansi D. NAYAk Lala B. sUkLA Barada k. MIsHRA CsIR-Institute of Minerals and Materials Technology Bhubaneswar 751013 India Department of Botany North Orissa University Baripada 757003 India Regional Center of Central Tuber Crops Research Institute Bhubaneswar 751019 India

Bioleaching of a low grade chalcopyrite （ball mill spillage material） was tested for copper recovery in shake flasks. The original samples （as received） were thermally activated （600℃, 30 min） to notice the change in physico-chemical and mineralogical characteristics of the host rock and subsequently its effect on copper recovery. A mixed culture of acidophilic chemolithotrophic bacterial consortium predominantly entailing Acidithiobacillus fer- rooxidans strain was used for bioleaching studies and optimization of process parameters of both original and thermally activated samples. Mineralogical characteriza- tion studies indicated the presence of chalcopyrite, pyrite in the silicate matrix of the granitic rock. Field emission scanning electron microscopy coupled with Energy dispersive spectroscopy （FEsEM-EDs） and X-ray Fluor- escence （XRF） analysis indicated mostly siO2. With pH 2, pulp density 10% w/v, inoculum 10% v/v, temperature 30~C, 150 ***-~, 49% copper could be recovered in 30 days from the finest particle size （- 1 ~ 0.75 mm） of the original spillage sample. Under similar conditions 95% copper could be recovered from the thermally activated sample with the same size fraction in 10 days. The study revealed that thermal activation leads to volume expansion in the rock with the development of cracks, micro and macro pores on its surface, thereby enabling bacterial solution to penetrate more easily into the body, facilitating enhanced copper dissolution.

关键词： ball mill spillage thermal activation bioleaching copper