检索结果-南通市图书馆

Biodiversity,current developments and potential biotechnological applications of phosphorus-solubilizing and-mobilizing microbes:A review

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2021年第1期31卷 43-75页

作者： Divjot kOUR k.sam lata rana Tanvir kAUR Neelam YADAV Ajar Nath YADAV Manish kUMAR Vinod kUMAR Harcharan Singh DHALIWAL Anil kumar SAXENA Department of Biotechnology Dr.Khem Singh Gill Akal College of AgricultureEternal UniversityBaru SahibSirmour 173101(India Gopi Nath P.G.College Veer Bahadur Singh Purvanchal UniversityGhazipur 275201(India Amity Institute of Biotechnology Amity UniversityGwalior 474005(India Biochemistry Forage SectionCollege of AgricultureCCS Agricultural UniversityHaryana 125004India ICAR-National Bureau of Agriculturally Important Microorganisms Kusmaur 275103(India)

As one of the most important and essential macronutrients next to nitrogen,phosphorus(P)is important for plant development,but it is the least mobile nutrient element in plant and ***,P is mined from geological sediments and added to agricultural soils so as to meet the critical requirements of crop plants for agronomic *** exists in soil in both organic and inorganic *** various inorganic forms of the element in soil are salts with calcium,iron,and aluminum,whereas the organic forms come from decaying vegetation and microbial *** is a huge diversity of plant microbiomes(epiphytic,endophytic,and rhizospheric)and soil microbiomes that have the capability to solubilize the insoluble P and make it available to *** main mechanism for the solubilization of inorganic P is by the production of organic acids,which lowers soil pH,or by the production of acid and alkaline phosphatases,which causes the mineralization of organic *** P-solubilizing and-mobilizing microorganisms belong to all three domains,comprising archaea,bacteria,and *** strains belonging to the genera Arthrobacter,Bacillus,Burkholderia,Natrinema,Pseudomonas,Rhizobium,and Serratia have been reported as efficient and potential P *** use of P solubilizers,alone or in combination with other plant growth-promoting microbes as an eco-friendly microbial consortium,could increase the P uptake of crops,increasing their yields for agricultural and environmental sustainability.

关键词： crop improvement gene expression microbial diversity organic acid production P mineralization P solubilizer phosphatase production plant growth-promoting traits

Some Investigations on Hybrid Fuzzy IPD Controllers for Proportional and Derivative kick Suppression

在线全文

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2016年第5期13卷 516-528页

作者： Vineet kumar k.P.S.rana Division of Instrumentation and Control Engineering Netaji Subhas Institute of Technology(NSIT)

Proportional and derivative kick i.e., a large change in control action of a proportional plus integral plus derivative （PID） controller due to a sudden change in reference set-point is generally undesired in process industry. Therefore, the structure of conventional parallel PID controller is modified to integral minus proportional derivative （I-PD） controller. In this paper, three hybrid fuzzy IPD controllers such as a fuzzy I-fuzzy PD （FI-FPD） controller and its hybrid combinations with its conventional counterpart such as fuzzy I-PD （FI-PD） and I-fuzzy PD （I-FPD） are presented in view of above industrial problem. These controllers are based upon the counterpart conventional I-PD controller and contains analytical formulae. Computer simulations are carried out to evaluate the performance of hybrid fuzzy controllers along with conventional I-PD and PID controllers for set-point tracking and disturbance rejection for an induction motor in closed loop using LabVIEWTM environment. The gains of conventional and hybrid fuzzy controllers are tuned using genetic algorithm （GA） for minimum overshoot and settling time. It has been observed that hybrid fuzzy controllers along with the conventional I-PD controller significantly remove the kick from the control action in reference set-point tracking. However, in disturbance rejection, I-PD and FI-PD controllers fail to eliminate the kick from the control signal. In contrast, FI-FPD and I-FPD controllers considerably reduced spikes from the control action in disturbance rejection. Among the conventional and hybrid fuzzy IPD controllers, FI--FPD demonstrates much better set-point tracking and disturbance rejection response with spike free control action.

关键词： Proportional plus integral plus derivative (PID) integral minus proportional derivative (I-PD) hybrid fuzzy IPD con- troller proportional kick derivative kick.

Multidimensional Model for Vulnerability Assessment of Urban Flooding: An Empirical Study in Pakistan

在线全文

学校读者我要写书评

暂无评论

International Journal of Disaster Risk Science 2018年第3期9卷 359-375页

作者： Irfan Ahmad rana Jayant k.Routray Department of Urban and Regional Planning (URP) School of Civil and Environmental Engineering (SCEE) National University of Sciences and Technology (NUST) Regional and Rural Development Planning (RRDP) and Disaster Preparedness Mitigation and Management (DPMM) Department of Development and SustainabilityAsian Institute of Technology

Urban flooding has become a regular phenomenon in many towns and cities in the Asia Pacific region over the past years. Professionals associated with disaster management and climate change are at the forefront of addressing urban flooding. To reduce flood risks,vulnerability and its components must be *** assessment methods are diverse and complex, with a varied nature of understanding the key terms used in various contexts, and this diversity ultimately reflects on the interpretation of results in research *** interpretations and definitions exist in the disaster risk and climate change literature, complicating the process of astute and comprehensive vulnerability assessment. The main purpose of this study was to quantify vulnerability indicators and develop a multidimensional model for vulnerability assessment. Vulnerability is explored through the lens of five dimensions: social, economic, physical/infrastructural, institutional, and attitudinal. This methodology is applied to urban flooding in Pakistan, to verify the proposed model. Three study sites in urban areas with different population sizes, situated in high-risk flood zones in the Punjab Province of Pakistan were selected for empirical investigation. A household survey was conducted, and indices were developed for each dimension based on welldefined indicators. The proposed methodology for vulnerability assessment was tested and found operational. This method can be replicated irrespective of spatial scales and can be modified for other disasters by streamlining hazard specific indicators.

关键词： Pakistan Punjab Urban flooding Vulnerability assessment

Role of N-acetylcysteine in rifampicin-induced hepatic injury of young rats

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2006年第2期12卷 287-291页

作者： SV rana S Attri k Vaiphei R Pal A Attri k Singh Department of Gastroenterology Postgraduate Institute of Medical Education and ResearchChandigarh-160012India Department of Palhotogy Postgraduate Institute of Medical Education and ResearchChandigarh-160012India. Department of Surgery Govt. Medical CollegeCha-ndigarh-160012India

AIM, To study the role of N-acetylcysteine （NAC） as a protective agent in rifampicin （RMP）-induced oxidative hepatic injury of young rats. METHODS： Hepatic injury was produced by giving 50mg/kg body weight/day of RMP for 3 wk. A dose of NAC （100mg/kg body weight/day） was given in combination with RMP intraperitoneally. Analysis of lipid peroxidation, thiol levels, cytochrome P4se, superoxide dismutase （SOD）, catalase, glutathione peroxidase, reductase and transferase were estimated in liver along with the body weight, liver weight and histological observations. RESULTS： RMP exposure resulted in no change in body and liver weight while antioxidative enzymes were altered but the non protein thiol （GSH） status was well preserved. Cytochrome P450 system and peroxidation of lipids were induced by RMP exposure. Partial protection was observed with NAC against RMP-induced changes in liver, which was evidenced from the prevention of increase in lipid peroxidation and the reduction in SOD and catalase enzyme levels. CONCLUSION. NAC protects young rats against RMP- induced oxidative hepatic injury.

关键词： Rifampicin N-acetylcysteine Hepatoprotection

Etchability of Latent Fission Fragment Tracks in CR-39

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2007年第11期24卷 3107-3110页

作者： Mukhtar Ahmed rana Physics Division Directorate of Science PINSTECH P.O. Nilore Islamabad Pakistan

We report the chemical etching behaviour of the CR-39 polymer detector exposed to fission fragments of 252Cf describing etchability of latent tracks, which are like nanocylinders. The fission fragment exposed detectors were etched in 1-7 N NaOH water solutions at temperatures 50-80℃ for 45 min in the case of track length and 180 min in the case of track diameter measurements. The reduced etch rate S （called here etchability） is determined using experimental results for all etching conditions and the etching conditions with the highest reduced etch are obtained. Physics and energetics of bulk and track etching are discussed. Possible effects causing spurious changes in determination of activation energy of etching are investigated.

关键词： coated conductor buffer layer self-epitaxy CeO2

Planar Channelling Criticalities of MeV Protons in Si Crystal： Simulations, Evaluation and Applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2008年第10期25卷 3724-3727页

作者： Mukhtar Ahmed rana Methodology Applications Initiative Physics Division PINSTECH Post Office Nilore Islamabad Pakistan

We reports a phase-space structure of MeV proton beam planar channelled along {110} planes in Si crystal using simulation results with the help of a computer code FLUX. The aim is to understand channelling conditions suitable for disorder measurement in crystals. Phase-space distribution of a planar channelled proton beam evolutes in a systematic fashion when it travels into the crystal. Planar channelled beam oscillates between phase-like and space-like conditions in which a part of the beam becomes under phase and space criticalities. These criticality conditions in planar channelling are analysed, explained and discussed with the perspective of defect measurement in crystals.

关键词： the power-law exponents precipitation durative abrupt precipitation change

Radiation-Induced Nano-Explosions at the Solid Surface: Near Surface Radiation Damage in CR-39 Polymer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2011年第8期28卷 83-86页

作者： Mukhtar Ahmed rana Physics Division Pakistan Institute of Nuclear Science and Technology(PINSTECH)P.O.NiloreIslamabadPakistan

New measurements of fission fragment and alpha particle induced surface damage in the most sensitive and commonly used nuclear track detector CR-39 are presented *** designed and optimized exposure and chemical etching experiments are employed to unfold the structure of radiation induced surface damage(RISD).Delay in the startup of the chemical etching of latent tracks or surface radiation damage is measured and is found to contain important information about the structure of the surface *** atomic scale pictures of RISD and its chemical etching are developed in an empirical *** model and experimental findings coherently compose a realistic picture of early or femtosecond evolution of RISD.

关键词： coherent finding damage

Formation of Charged Particle Tracks in Solids

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2006年第6期23卷 1448-1451页

作者： Mukhtar A. rana Physics Research Division PINSTECH PO Nilore Islamabad Pakistan

A criterion for formation of etchable tracks in solids is suggested using the well-known concepts of ionization and thermal spikes, diffusion process with useful and justified assumptions, and present or published experimental and theoretical investigations on the same subject. The suggested criterion is useful for a wide spectrum of researchers including development and applications of track recording materials, ions implantation, sputtering and other areas, which include interactions of charged particles with solids.

关键词： RADIATION-DAMAGE ACTIVATION-ENERGY AUGER ELECTRONS CR-39 DETECTORS

Gastroprotective effect of Achyranthes aspera Linn,leaf on rats

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2012年第3期5卷 197-201页

作者： Ashish k Das Papiya Bigoniya Neelesh k Verma AC rana Department of Pharmacology Radharaman College of PharmacyBhopal-02M.P.India Rayat College of Pharmacy Rail Majranear Ropar NawanshahrPunjabIndia

Objective:The study was aimed al evaluating the antiulcer activity of ethanolic extract of Achyranthes aspera(EEAA) ***:The anti-ulcer assays were performed on pylorus ligation and chronic ethanol induced ulcer *** effects of the EEAA on gastric content volume,*** acidity,total acidity and ulcer index were ***:The percentage of ulcer protection(59.55%and 35.58%) was significantly(P kg),it also reduced the volume of gastric juice and total acidity whereas,gastric pH was increased ***:The results of this study show significant gastroprotective activity of EEAA may be due to presence of phyto-constituents like flavanoids,saponins and tannins.

关键词： Antiulcer Achyranthes aspera Gastroprotective Omeprazole Ethanol