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

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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

Ce-Co-doped BiFeO_3 multiferroic for optoelectronic and photovoltaic applications

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Chinese Physics B 2017年第11期26卷 383-388页

作者： Jyoti sharma deepak Basandrai A k Srivastava department of Physics Lovely Professional University

The Ce-Co-doped BiFeO3 multiferroic, Bi（1-x）Ce）xFe（1-x）CoxO3（x = 0.00, 0.01, 0.03, and 0.05）, has been prepared by a sol-gel auto-combustion method and analyzed through Raman spectroscopy, photoluminescence, and UV-visible spectroscopy. We have observed an anomalous intensity of the second-order Raman mode at - 1260 cm^-1 in pure BFO and suppressed intensity in doped samples, which indicates the presence of spin two-phonon coupling in these *** photoluminescence spectra show reduction in the intensity of emission with the increasing dopant concentration, which indicates the high charge separation efficiency. A sharp absorption with three charge transfer（C-T） and two d-d transitions are shown by UV-visible spectra in the visible region. The band gap of BiFeO3（BFO） is decreasing with increasing dopant concentrations and the materials are suitable for photovoltaic applications.

关键词： Raman and UV-visible spectroscopy photoluminescence and photo-voltaic applications

Boundary conditions for porous solids saturated with viscous fluid

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Applied Mathematics and Mechanics(English Edition) 2009年第7期30卷 821-832页

作者： M.d.sharma department of Mathematics Kurukshetra University

Boundary conditions are derived to represent the continuity requirements at the boundaries of a porous solid saturated with viscous fluid. They are derived from the physically grounded principles with a mathematical check on the conservation of energy. The poroelastic solid is a dissipative one for the presence of viscosity in the interstitial fluid. The dissipative stresses due to the viscosity of pore-fluid are well represented in the boundary conditions. The unequal particle motions of two constituents of porous aggre~ gate at a boundary between two solids are explained in terms of the drainage of pore-fluid leading to imperfect bonding. A mathematical model is derived for the partial connec- tion of surface pores at the porous-porous interface. At this interface, the loose-contact slipping and partial pore opening/connection may dissipate a part of strain energy. A numerical example shows that, at the interface between water and oil-saturated sandstone, the modified boundary conditions do affect the energies of the waves refracting into the isotropic porous medium.

关键词： porous solid dissipative boundary conditions

Synthesis of N1-3-{（4-Substituted aryl-3-chloro-2-oxo- azetidine）-iminocarbamyl}-propyl-6-nitroindazole derivatives and Their Biological Significance

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Chinese Journal of Chemistry 2011年第8期29卷 1745-1752页

作者： Samadhiya, Pushkal sharma, Ritu Srivastava, Santosh k. Srivastava, Savitri d. Synthetic Organic Chemistry Laboratory Department of Chemistry Dr. H. S. Gour University (A Central Univer- sity) Sagar M.P. 470003 India

Synthesis of N1-3-{（4-substitute daryl-3-chloro-2-oxo-azetidine）-iminocarbamyl}-propyl-6-nitroindazole 4a-- 4s was conducted by a conventional method. All the compounds were synthesized and characterized by IR, 1H NMR, 13C NMR, FAB-Mass techniques and chemical methods. All the final synthesized compounds were evaluated for their antimicrobial activity and antitubercular activity with MIC values against some selected microorganisms.

关键词： synthesis 6-nitroindazole 2-azetidinone biological activity

3d biofabrication of vascular networks for tissue regeneration:A report on recent advances

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Journal of Pharmaceutical Analysis 2018年第5期8卷 277-296页

作者： M.d.Sarker Saman Naghieh N.k.sharma Xiongbiao Chen division of Biomedical Engineering College of Engineering University of Saskatchewan department of Mechanical Engineering College of Engineering University of Saskatchewan

Rapid progress in tissue engineering research in past decades has opened up vast possibilities to tackle the challenges of generating tissues or organs that mimic native structures. The success of tissue engineered constructs largely depends on the incorporation of a stable vascular network that eventually anastomoses with the host vasculature to support the various biological functions of embedded cells. In recent years, significant progress has been achieved with respect to extrusion, laser, micro-molding, and electrospinning-based techniques that allow the fabrication of any geometry in a layer-by-layer fashion. Moreover, decellularized matrix, self-assembled structures, and cell sheets have been explored to replace the biopolymers needed for scaffold fabrication. While the techniques have evolved to create specific tissues or organs with outstanding geometric precision, formation of interconnected, functional, and perfused vascular networks remains a challenge. This article briefly reviews recent progress in 3d fabrication approaches used to fabricate vascular networks with incorporated cells, angiogenic factors, proteins, and/or peptides. The influence of the fabricated network on blood vessel formation, and the various features, merits, and shortcomings of the various fabrication techniques are discussed and summarized.

关键词： 3d bioprinting Tissue engineering Vascularization Extrusion Laser-based printing Co-axial printing

MicroRNAs:a new ray of hope for diabetes mellitus

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Protein & Cell 2012年第10期3卷 726-738页

作者： Munish kumar Sayantan Nath Himanshu k Prasad G d sharma Yong Li department of Biotechnology Assam UniversitySilchar 788011 India 2 department of Life Science and Bioinformatics Assam UniversitySilchar 788011 India 3 department of Biochemistry and Molecular Biology University of LouisvilleKY 40292USA

diabetes mellitus has become one of the most common chronic diseases,thereby posing a major challenge to global *** by high levels of blood glucose(hyperglycemia),diabetes usually results from a loss of insulin-producing β-cells in the pancreas,leading to a deficiency of insulin(type 1 diabetes),or loss of insulin sensitivity(type 2 diabetes).Both types of diabetes have serious secondary complications,such as microvascular abnormalities,cardiovascular dysfunction,and kidney *** complex factors,such as genetic and environmental factors,are associated with the pathophysiology of *** the past two decades,the role of small,single-stranded noncoding microRNAs in various metabolic disorders,especially diabetes mellitus and its complications,has gained widespread attention in the scientific *** first as an endogenous regulator of development in the nematode Caenorhabditis elegans,these small RNAs post-transcriptionally suppress mRNA target *** this review,we discuss the potential roles of different microRNAs in diabetes and diabetes-related complications.

关键词： diabetes diabetic complications dicer glucose insulin microRNA pancreas

Synthesis and Biological Study of Some 4-oxo-Thiazolidine derivatives of 2-Aminothiazole

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Chinese Journal of Chemistry 2011年第5期29卷 1001-1010页

作者： Samadhiya Pushkal sharma Ritu Srivastava Santosh k. Srivastava Savitri d. Synthetic Organic Chemistry Laboratory Department of Chemistry Dr. H.S. Gour University (A Central University) Sagar M.P. 470003 India

Conventional and microwave assisted synthesis of new series of N-[2-{2-（substituted phenyl）-4-oxo- 5-（substituted benzylidene）-1,3-thiazolidine}-iminoethyl]-2-aminothiazole 5a-Sin have been developed. The cycloaddition reaction of thioglycolic acid with N-{2-（substituted benzylidenehydrazino）-ethyl}-2-aminothiazole 3a--3m in the presence of anhydrous ZnC12 afforded new heterocyclic compounds N-[2-{2-（substituted phenyl）- 4-oxo-l,3-thiazolidine}-iminoethyl]-2-aminothiazole 4a---4m. The later product on treatment with several selected substituted aromatic aldehydes in the presence of C2HsONa undergoes knoevenagel reaction to yield 5a--Sin. The structures of compounds 1, 2, 3a--3m, 4a---4m and 5a--Sm were confirmed by IR, IH NMR, 13C NMR, FAB-Mass and chemical analysis. All above compounds were screened for their antimicrobial activities against some selected bacteria and fungi and antituberculosis study against M. tuberculosis.

关键词： conventional microwave synthesis 2-aminothiazole 4-oxo-thiazolidine antimicrobial antitubercular

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一项有效的芒果杂交技术

云南农业科技 1981年第2期 47-47页

作者： R.N.Singh d.k.sharma P.k.Majumber 徐崇敬

栽培芒果(Mangifera indica L)总会遇到许多严重的障碍:大小年结果,旺盛生长品种的压倒优势,对病虫害敏感等等。近来,由串珠镰孢菌(Fusarium moniliforme)引起的花的畸形变异已达到令人惊恐的程度,并直接威胁到印度北部和西部芒果栽培... 详细信息

栽培芒果(Mangifera indica L)总会遇到许多严重的障碍:大小年结果,旺盛生长品种的压倒优势,对病虫害敏感等等。近来,由串珠镰孢菌(Fusarium moniliforme)引起的花的畸形变异已达到令人惊恐的程度,并直接威胁到印度北部和西部芒果栽培业的生存。因为几乎所有的品种都显示出这些症候,人们早就感到有必要经过有计划的种间杂交发展改良品种。然而,进展不大,这仅仅是因为杂交技术太麻烦而造成的,这种繁琐的技术使大量不必要的亲代组合中杂交很少成功。从而,在这一高度杂合的多年生果树上可用来进行有效选择的杂种群体就

关键词：芒果杂种苗套袋座果率结果率种间杂交远缘杂交杂交技术

Characterization of Bi2/3Cu3Ti4O12 ceramics synthesized by semi-wet route

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Progress in Natural Science:Materials International 2016年第6期26卷 567-571页

作者： Pooja Gautam Ankur khare Sunita sharma N.B.Singh k.d.Mandal department of Chemistry Indian Institute of Technology(BHU) department of Chemistry & Biochemistry University of Maryland

BiCuTiO(BCTO) ceramic was synthesized by the semi-wet route using metal nitrate solutions and solid TiOpowder in a stoichiometric ratio. Fourier transform infrared(FTIR) study of BCTO precursor powder and calcined ceramic showed the presence of alcoholic functional groups and the stretching band of Ti-O and Cu-O respectively. X-ray diffraction(XRd), scanning electron microscope(SEM) and energy dispersive x-ray spectroscopy(EdX) were employed to characterize the structure, surface morphology and purity of the sintered BCTO ceramic respectively. X-ray diffraction study confirmed the single phase formation of BCTO ceramic at1073 k. The average dimension of grains calculated by SEM and AFM was found to be in the range of 0.73 ±0.2 μm with clear grain boundaries. Magnetic property was investigated over a wide temperature range 2–300 k at a magnetic field of 7 tesla. The Curie temperature was calculated by zero field cooled(M) and field cooled(M) magnetization at 100 Oe applied field which was found to be 125 k. The sintered BCTO ceramic shows high dielectric constant(ε’=2.9×10~4) at 323 k and 100 Hz.

关键词： Ceramic Synthesis Structural properties Magnetic properties