检索结果-南通市图书馆

Influence of Accompanying Anions on Potassium Retention and Leaching in Potato Growing Alluvial Soils

Pedosphere 2013年第4期23卷 464-471页

作者： V.sharma k.n.sharma Department of Soils Punjab Agricultural University

A column study was carried out to assess the influence of accompanying anions on potassium （k） leaching at potato growing sites with different soil textures （sandy loam and clay loam） in northwestern India. Potassium was applied in the top 15 cm layer of soil column at 30 and 60 mg k kg-1 through different sources having different accompanying anions （CI-, SO^-, nO3 and H2PO4-）. Maximum k was retained in the top 0-15 cm layer with a sharp decrease in k content occurring in 15 30 cm layer of the soil column. The trend was similar for both levels of applied k as well as frequency of leaching and soil type. The decrease of k content in soil column after four leaching events was maximum in case of khanaura sandy loam, while only minor decrease was observed in Hundowal clay loam when k was applied at 60 mg k kg-1, indicating higher potential of clay rich soil to adsorb k. In general, the k leaching in presence of the accompanying anions followed the order of SO4^2-≤ H2PO42- 〈 nO3 = Cl-. Highest 1 mol·L^-1 CH3COOnH4-extractable k was retained when k was applied along with SO4^2- and H2PO4 anions, and the least was retained when accompanying anion was Cl-. The influence of anions was more pronounced in the light textured soil and at high amounts of k application. Higher levels of k application resulted in higher losses of k, especially in sandy loam soil as observed from the leachate concentration. Among the different k sources, the maximum amount of k leaching was noticed in the soil column amended with kC1. After four leachings, the maximum amount of k leached out was 6.40 mg L-1 in Hundowal clay loam and 9.29 mg L-1 in khanaura sandy loam at 60 mg k kg-1 of soil application through kC1. These concentrations were lower than the recommended guideline of the World Health Organisation （12.00 mg L-1）.

关键词： column study leaching events potassium application potassium sources soil texture

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

蔗渣的干燥

引用

甘蔗糖业 1982年第2期 49-51页

作者： k.n.sharma R.k.kochar. 周学礼

印度正面临着能源危机,各个耗用能源的工业都促进自己解决。制糖工业对有效利用热能已做大量工作,但增添热能的摸索还很少。作者设计出一个方案,可作为锅炉的一个系统,即用烟气干燥蔗渣降低水份到40～42。

关键词：蔗渣水份旋风分离器制糖工业副产品沙克龙分离设备干燥化工单元操作轻工业制糖工业糖业

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

TransientWaves Due to Mechanical Loads in Elasto-Thermo-Diffusive Solids

引用

Advances in Applied Mathematics and Mechanics 2011年第1期3卷 87-108页

作者： J.n.sharma n.k.sharma k.k.sharma Department of Applied Sciences and Humanities National Institute of TechnologyHamirpur-177005India

This paper deals with the study of transient waves in a homogeneous isotropic,solid halfspace with a permeating substance in the context of the theory of generalized *** halfspace is assumed to be disturbed due to mechanical loads acting on its *** model comprising of basic governing differential equations and boundary conditions has been solved by employing Laplace transform *** that the second sound effects are short lived,the small time approximations of solution for various physical quantities have been obtained and the results are discussed on the possible wave *** case of continuous and periodic loads acting at the boundary,the displacement is found to be continuous at each wave front while it is discontinuous in case of impulsive *** temperature and concentration fields are found to be discontinuous at all the wave *** displacement,temperature change and concentration deviation due to impulsive,continuous and periodic mechanical loads have also been evaluated in the physical domain at all times by employing numerical inversion technique of integral *** computer simulated numerical results have been presented graphically in respect of displacement,temperature change and concentration deviation for brass.A significant effect of mass diffusion has been observed on the behaviour of mechanical and thermal waves.

关键词： Diffusion Laplace transform small time approximations wave fronts

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Mathematical Modelling and Analysis of Lamb Waves in Elasto-Thermodiffusive Plates

引用

Advances in Applied Mathematics and Mechanics 2010年第2期2卷 238-258页

作者： J.n.sharma P.k.sharma Department of Applied Sciences National Institute of TechnologyHamirpur 177005India Department of Mathematics SL Bawa Dayanand Anglo Vedic CollegeBatala 143505India

The propagation characteristics of elasto-thermodiffusive Lamb waves in a homogenous isotropic,thermodiffusive,elastic plate have been investigated in the context of linear theory of generalized *** developing the formal solution of the mathematical model consisting of partial differential equations,the secular equations have been derived by using relevant boundary conditions prevailing at the surfaces of the plate for symmetric and asymmetric wave modes in completely separate *** secular equations for long wavelength and short wavelength waves have also been deduced and *** amplitudes of displacement components,temperature change and mass concentration under the Lamb wave propagation conditions have also been *** complex transcendental secular equations have been solved by using a hybrid numerical technique consisting of irreducible Cardano method along with function iteration technique after splitting these in a system of real transcendental *** numerically simulated results in respect of phase velocity,attenuation coefficient,specific loss factor and relative frequency shift of thermoelastic diffusive waves have been presented graphically in the case of brass material.

关键词： Diffusion Cardano method relative frequency thermal relaxation iteration method

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synthesis of CaWO_4:Eu^(3+) phosphor powders via ethylene glycol route and its optical properties

引用

Journal of Rare Earths 2012年第4期30卷 310-314页

作者： k.Gayatri sharma n.Rajmuhon Singh Department of Chemistry Manipur University Canchipur-795003 Imphal Manipur India

Eu3＋ doped CaWO4 with tetragonal system were prepared at comparatively low temperature （125 ℃） in ethylene glycol medium. The phosphor was further investigated by X-ray difffactometer （XRD）, photoluminescence spectrophotometer （PL）, Fourier transform infra red （FT-IR） spectroscopy and transmission electron microscopy （TEM）. XRD analysis indicated a decrease in the unit cell volume of CaWO4 with increasing Eu3＋ ion concentration. It indicated the homogeneous substitution of Ca2＋ ions in CaWO4 by the Eu3＋ ions. TEM images showed that the particle size ranged from 20 to 200 nm and it could extend the application of the nanoparticles. The photoluminescence study showed that the intensity of electric dipole transition （SD0→TF2） at 614 nm dominated over the magnetic dipole transition （SD0→TFx） at 592 nm. The optimum concentration of Eu3＋ for the highest luminescence was found to be 20 at.%. The as prepared samples were found to be dispersible in water and methanol.

关键词： CaWO4:Eu3+ capping agent photoluminescence dispersible rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Dynamics of Entanglement in Qubit-Qutrit with x-Component of DM Interaction

引用

Communications in Theoretical Physics 2016年第3期65卷 278-284页

作者： kapil k.sharma S.n.Pandey Department of Physics Motilal Nehru National Institute of Technology

In this present paper,we study the entanglement dynamics in qubit A-qutrit B pair under x component of Dzyaloshinshkii-Moriya interaction(D_x)by taking an auxiliary qubit ***,we consider an entangled qubit-qutrit pair initially prepared in two parameter qubit-qutrit states and one auxiliary qubit prepared in pure state interacts with the qutrit of the pair through DM *** trace away the auxiliary qubit and calculate the reduced dynamics in qubit A-qutrit B pair to study the influence of the state of auxiliary qubit C and D_x on *** find that the state(probability amplitude)of auxiliary qubit does not influence the entanglement,only D_x influences the *** phenomenon of entanglement sudden death(ESD)induced by D_x has also been *** also present the affected and unaffected two parameter qubit-qutrit states by D_x.

关键词： entanglement dynamics qubit-qutrit DM interaction ESD

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Vibration analysis of axisymmetric functionally graded viscothermoelastic spheres

引用

Acta Mechanica Sinica 2014年第1期30卷 100-111页

作者： D.k.sharma J.n.sharma S.S.Dhaliwal V.Walia Department of Mathematics Sant Longowal Institute of Engineering and Technology Department of Mathematics National Institute of Technology

The present study focuses on the analysis of free vibrations of axisymmetric functionally graded hollow spheres. The material is assumed to be graded in radial di- rection with a simple power law. Matrix Frrbenious method of extended power series is employed to derive the analytical solutions for displacement, temperature, and stresses. The dispersion relations for the existence of various types of pos- sible modes of vibrations in the considered hollow sphere are derived in a compact form. In order to explore the character- istics of vibrations, the secular equations are further solved by using fixed point iteration numerical technique with the help of MATLAB software. The numerical results have been presented graphically for polymethyl methecrylate materials in respect of natural frequencies, frequency shift, inverse quality factor, displacement, temperature change, and radial stress.

关键词： Functionally graded Stresses Vibrations Fr6benius - Dispersion - Spherical structures

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Sequential decay analysis of^(235)U(n^(th),f)reaction using fragmentation approach

引用

Chinese Physics C 2024年第6期48卷 145-154页

作者： nitin sharma Ashutosh kaushik Manoj k.sharma School of Physics and Materials Science Thapar Institute of Engineering&TechnologyPatiala-147004PunjabIndia

numerous experimental and theoretical observations have concluded that the probability of the three fragment emission(ternary fission)or binary fission increases when one proceeds towards the heavy mass region of nuclear periodic *** factors affect fragment emission,such as the shell effect,deformation,orientation,and fissility *** and ternary fissions are observed for both ground and excited states of the *** collinear cluster tripartition(CCT)channel of the^(235)U(n^(th),f)reaction is studied,and we observe that the CCT may be a sequential or simultaneous emission *** date,different approaches have been introduced to study the CCT process as a simultaneous or sequential process,but the decay dynamics of these modes have not been not fully *** the three fragments of the sequential process and exploring their related dynamics using an excitation energy dependent approach would be of further ***,in this study,we investigate the sequential decay mechanism of the^(235)U(n^(th),f)reaction using quantum mechanical fragmentation theory(QMFT).The decay mechanism is considered in two steps,where initially,the nucleus splits into an asymmetric *** the second step,the heavy fragment obtained in the first step divides into two *** I analysis is conducted by calculating the fragmentation potential and preformation probability for the spherical and deformed choices of the decaying *** most probable fragment combination of stage I are identified with respect to the dips in the fragmentation structure and the corresponding maxima of the preformation probability(P0).The light fragments of the identified decay channels(obtained in step I)agree closely with the experimentally observed *** excitation energy of the decay channel is calculated using an iteration *** excitation energy is shared using an excitation energy dependent level density *** obtained excitation

关键词： fission cluster radioactivity ternary fission spontaneous fission cluster model total kinetic energy preformation probability

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Design and development of self-cleaning PV sliding system

引用

Clean Energy 2022年第3期6卷 392-403页

作者： Vinay Gupta Madhu sharma Rupendra Pachauri k n Dinesh Babu Department of Electrical Engineering Manipal University Jaipur-303007India School of Engineering University of Petroleum and Energy StudiesDehradun-248007India Megger Group Ltd MylaporeChennai-600004India

This study describes the designing steps of the proposed self-cleaning system for the photovoltaic(PV)system and experimentally investigates the effectiveness of the proposed self-cleaning PV sliding system for solar power plants under all Indian climate *** investigate the performance of the proposed self-cleaning PV sliding system,we used three PV panels of 20 W with a sliding structure and another set of three PV panels of 20 W with a traditional(fixed)technique,and recorded the output power for the period of December 2019 to April *** experimental results show that the proposed self-cleaning PV sliding system improved efficiency by 18.3%,13.3%and 6.4%,respectively,in the summer,winter and post-monsoon seasons when compared to the fixed PV *** results also revealed that energy consumption was very low when compared to the amount of energy *** proposed system not only cleans the PV system,but also protects it from *** results of this study show that there is a significant improvement in PV efficiency and thus an increase in electricity production under all climate conditions.

关键词： solar energy photovoltaics cleaning soiling hailstorm protection sliding PV system

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：