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Journal of Environmental Sciences 2009年第6期21卷 814-820页

作者： ahmed zahoor Abdul Rehman Department of Microbiology and Molecular Genetics University of the PunjabNew Campus

The present study was aimed to assess the ability of Bacillus ***-2-1 and Staphylococcus capitis to reduce hexavalent chromium into its trivalent *** ***-2-1 could tolerate Cr（Ⅵ）（4800 μg/mL） and *** could tolerate Cr（Ⅵ）（2800 μg/mL）.Both organisms were able to resist Cd^2＋（50 μg/mL）,Cu^2＋（200 μg/mL）,Pb^2＋（800 μg/mL）,Hg^2＋（50 μg/mL） and Ni2＋（4000 μg/mL）.*** resisted Zn^2＋ at 700 μg/mL while Bacillus ***-2-1 only showed resistance up to 50 μg/*** ***-2-1 and *** showed optimum growth at pH 6 and 7,respectively,while both bacteria showed optimum growth at 37°*** ***-2-1 and *** could reduce 85% and 81% of hexavalent chromium from the medium after 96 h and were also capable of reducing hexavalent chromium 86% and 89%,respectively,from the industrial effuents after 144 *** free extracts of Bacillus ***-2-1 and *** showed reduction of 83% and 70% at concentration of 10 μg Cr（Ⅵ）/mL,*** presence of an induced protein having molecular weight around 25 kDa in the presence of chromium points out a possible role of this protein in chromium *** bacterial isolates can be exploited for the bioremediation of hexavalent chromium containing wastes,since they seem to have a potential to reduce the toxic hexavalent form to its nontoxic trivalent form.

关键词： Cr(Ⅵ) reducing bacteria bioremediation Bacillus sp. JDM-2-1 Staphylococcus capitis

Does financial development moderate the link between technological innovation and environmental indicators?An advanced panel analysis

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Financial Innovation 2023年第1期9卷 2885-2903页

作者： Hossein Ali Fakher zahoor ahmed Department of Business Management Ayandegan Institute of Higher EducationTonekabonIran Department of Business Admistration Faculty of EconomicsAdministrative and Social SciencesBahçeşehir Cyprus UniversityNicosiaTurkey Department of Economic&Data Sciences New Uzbekistan University54 Mustaqillik Ave.Tashkent 100007Uzbekistan

This study analyzes the role of financial development(FD)on the impact of technologi-cal innovation(TI)on six environmental quality indicators for the 25 economies that are part of the Organization for Economic Cooperation and Development for the period from 2000 to *** use a two-step dynamic generalized method of moments approach to understand this *** results show that FD augments the posi-tive effects of TI on four of the six environmental indicators,namely ecological foot-print,adjusted net savings,pressure on nature,and environmental ***,no significant effects on environmental sustainability and environmental vulnerability indices were *** considering all of the environmental quality indicators,TI appears to enhance environmental *** find evidence to support the existence of the environmental Kuznets curve in the context of each environmen-tal indicator and economic ***,FD and energy consumption appear to accelerate environmental *** on these results,FD should be viewed as an important parameter in designing policies for innovation to achieve the goal of net-zero carbon *** innovation and environmental quality nexus is *** moderating role of financial development is *** different environmental quality indicators are used for OECD *** development intensifies the environmental benefits of innovation.•The EKC hypothesis is confirmed for all six environmental indicators.

关键词： Technological innovation Financial development Two-step dynamic Sys-GMM estimator Environmental quality indicators Environmental sustainability

Do investments in green energy,energy efficiency,and nuclear energy R&D improve the load capacity factor?An augmented ARDL approach

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Geoscience Frontiers 2024年第4期15卷 372-382页

作者： Xin Jin zahoor ahmed Ugur Korkut Pata Mustafa Tevfik Kartal Sinan Erdogan School of Business Guilin Tourism UniversityGuilin 541006PR China Department of Business Administration Faculty of EconomicsAdministrative and Social SciencesBahçesehir Cyprus UniversityNicosiaTurkey Department of Economic&Data Sciences New Uzbekistan University54 Mustaqillik Ave.Tashkent100007Uzbekistan Osmaniye Korkut Ata University Faculty of Economics and Administrative SciencesDepartment of Economics80000 MerkezOsmaniyeTurkey Department of Banking and Finance European University of LefkeLefkeNorthern CyprusTR-10 MersinTürkiye Adnan Kassar School of Business Lebanese American UniversityBeirutLebanon Department of Economics and Management Khazar UniversityBakuAzerbaijan Hatay Mustafa Kemal University Faculty of Economics and Administrative SciencesHatayTurkey

Renewable energy,energy efficiency,and nuclear energy research and development(RER,EER,and NER)budgets are immensely important to fulfill sustainable development goals 7,9,and 13,by accelerating energy innovation,energy transition,and climate *** literature on the drivers of the load capacity factor(LCF),a recently developed ecological quality measure,is mounting;however,the roles of energy investments in the LCF are largely ***,this study assesses the impacts of RER,EER,NER,and financial globalization(FIG)on the LCF using data from 1974 to 2018 for *** and reliable time series tests(Augmented ARDL,DOLS,and Fourier causality)are adopted to analyze cointegration,long-run impacts,and causal *** outcomes unveil that both green energy and energy efficiency R&D promote the LCF by enhancing ecological ***,the positive impact of NER on the LCF is found to be weaker than the impacts of RER and *** curbs ecological degradation by expanding the ***,the U-shaped connection between economic growth(ECG)and the LCF confirms the load capacity ***,policymakers should focus on RER and EER to preserve the environment and promote sustainable growth.

关键词： Green Energy R&D Energy Efficiency R&D Nuclear Energy R&D Financial Globalization LCF

Block Layering Approach in TAST Codes

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International Journal of Communications, Network and System Sciences 2010年第10期3卷 788-792页

作者： zahoor ahmed Jean Pierre Cances Vahid Meghdadi 不详

Threaded Algebraic Space Time (TAST) codes developed by Gamal et al. is a powerful class of space time codes in which different layers are combined and separated by appropriate Diophantine number . In this paper we introduce a technique of block layering in TAST codes, in which a series of layers (we call it Block layers) has more than one transmit antenna at the same time instant. As a result we use fewer layers (Diophantine numbers) for the four transmit antennas scheme, which enhances the coding gain of our proposed scheme. In each block layer we incorporate Alamouti’s transmit diversity scheme which decreases the decoding complexity. The proposed code achieves a normalized rate of 2 symbol/s. Simulation result shows that this type of codes outperforms TAST codes in certain scenarios.

关键词： TAST Code Block Layer Space Time Coding

Efficiency Improvement of Space Time Block Codes

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International Journal of Communications, Network and System Sciences 2010年第6期3卷 507-510页

作者： zahoor ahmed Baloch Mohammad Usman Baloch Noor Hussain 不详

Unlike most of the existing methods in Space Time coding (STC) system which focus on design of STC gaining full rate and/or maximum diversity, we propose an approach to improve spectral efficiency of the code. The proposed scheme carries more information symbols in each transmission block as compare to its counterpart code, and yet retains the property of simple decoding. Simulation results show that transmit diversity is retained with improvement of code efficiency. We mainly focus on Four transmit antenna scheme but it can be generalized for any number of transmit antennas.

关键词： Space Time Block Code Spectral Efficiency

Generation of Electric Power from Domestic Cooking System

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Open Journal of Energy Efficiency 2015年第4期4卷 69-76页

作者： Syed Ali Raza Shah zahoor ahmed Bashir ahmed Leghari Wazir Muhammad Laghari Attaullah Khidrani Department of Mechanical Engineering Balochistan University of Engineering and Technology Khuzdar Pakistan Department of Electrical Engineering Balochistan University of Engineering and Technology Khuzdar Pakistan

This study work related with floating of an idea about conversion of reclaimed thermal energy from domestic cooking system into the electrical power. There were different techniques in use worldwide for harnessing the energy into the appropriate useful work and also to create efficient system for the energy conversion process. The ignorance in this regard might be due to the reason that this wastage did not cost too much for a single home on per day or per month basis, but it could be a ample amount of cost if integrated this loss for a whole city or on yearly bases for a single home. The idea in this work depended upon the recovery of waste heat from Pressure Cookers used in the houses for the domestic cooking purposes, and optimized the reclaimed thermal energy for the conversion into electric power. This research work related with losses of energy discussed and analyzed on the basis of thermo dynamically regarding (a) the wastage of thermal energy escaped through the system due to the spreading of exhaust vapors and taking away significant amount of thermal energy;(b) losses of enthalpy through the dissipate steam;(c) heat losses in the tubing from the Pressure Cooker to the turbine;(d) electric power produces from the system. In this work, new methods were advised, in order to reduce the losses of thermal energy from the system. It would open the venue for researchers to promote this new idea in near future.

关键词： Waste Heat Pressure Cooker Thermal Energy Electric Power Enthalpy Losses Steam Turbine

Characterization of Endophytic Microorganisms of Rice(Oryza sativa L.)Potentials for Blast Disease Biocontrol and Plant Growth Promoting Agents

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Phyton-International Journal of Experimental Botany 2023年第11期92卷 3021-3041页

作者： Shugufta Parveen Fayaz A.Mohiddin M.Ashraf Bhat zahoor ahmed Baba Fehim Jeelani M.Anwar Bhat Sajad Un Nabi Burhan Hamid Saba Bandey Farhanaz Rasool Zakir Amin Ibrahim Al-Ashkar Muhammad Adnan Ayman El Sabagh Division of Plant Pathology Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Mountain Research Centre for Field Crops SKUAST-KashmirKhudwaniIndia Division of Genetics and Plant Breeding Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Division of Microbiology Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Division of Statistics Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Division of Agronomy Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Indian Council of Agricultural Research-Central institute of Temperate Horticulture(ICAR-CITH) Old AirportRangrethSrinagarIndia Division of Plant Pathology Faculty of HorticultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirShalimarIndia Directorate of Extension Sher-e-Kashmir University of Agricultural Sciences and Technology of KashmirShalimarIndia Department of Plant Production College of Food and Agriculture SciencesKing Saud UniversityRiyadhSaudi Arabia College of Food Agricultural and Environmental SciencesThe Ohio State UniversityColumbusOHUSA Department of Agronomy Faculty of AgricultureUniversity of KafrelsheikhKafrelsheikhEgypt

One hundred twenty-five endophytic microorganisms were isolated from the roots,stems,and leaves of four prominent rice cultivars growing in temperate *** potential to combat rice blast disease and promote plant growth was *** dual culture tests highlighted the strong antagonistic activity of five fungal(ranging from 89%–70%)and five bacterial(72%–61%)*** examination focused on volatile compounds produced by selected isolates to counter the blast *** these,the highest chitinase(13.76μg mL−1)and siderophore(56.64%),was exhibited by Aspergillus flavus,and the highest HCN production was shown by Stenotrophomonas maltophilia(36.15μM mL−1).In terms of growth promotion traits,Aspergillus flavus and Enterobacter cloacae excelled in activities viz,phosphorous solubilization,ammonia production,auxin and gibberellic acid production,and nitrogen *** Identity of these endophytes was confirmed through molecular analysis as Trichoderma afroharzianum,Trichoderma harzianum,Penicillium rubens,Aspergillus flavus,Stenotrophomonas rhizophila,Stenotrophomonas maltophilia,Bacillus cereus,Enterobacter cloacae,and Bacillus *** greenhouse conditions,the highest disease control was shown by isolate Bacillus licheniformis and *** with an inhibition of 79%,followed by ***(77%)and ***(73%).The overall results of this study showed that Bacillus licheniformis and Stenotrophomonas rhizophila have great potential to be used as bio-stimulant and biocontrol agents to manage rice blast disease.

关键词： Endophytes phylogeny antagonistic activity Pyricularia phytohormones

Development of 19-plex Y STR system and polymorphism studies in Pakistani population

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Journal of Pharmaceutical Analysis 2008年第4期20卷 267-273页

作者： Faraz Malik Mahmood A. Kayani M. Ansar Obaid Ullah Muhammad Shafeeq Shahid Chohan Yassir Abbas Saqib Shazad Ali Raza Rahat Rehman Faizan Raiz Qurat-ul-ain Muhammad Hassan Siddiqi Allah Rakha Zia ur Rehman zahoor ahmed Department of Biosciences COMSATS Insitute of Information Technology Islamabad Pakistan Centre of Excellence in Molecular Biology Lahore Pakistan Centre for Advanced Forensic Sciences University of the Punjab Lahore Pakistan National Key Laboratory of Ministry of Health for Forensic Sciences Xi'an Jiaotong University

For the development of 19-plex Y STR system and polymorphism studies in local ethnic populations sixteen markers of non-recombining regions (NRY) of Y chromosome, which show high power of discrimination among individuals, were selected in this study. Blood samples (600) were collected from the males of three most common castes of Pakistani population (Arain, Awan and Rajput) with different parent lineages. Three markers (DYS385a/b, DYS389I/II and YCAIIa/b) among 16 Y STRs are double-targeted regions of the Y chromosome and thus provide two polymorphic peaks for each respective primer set. These 16 Y-STRs were developed into Megaplex system for simultaneous amplification of all markers within the population. The overall power of discrimination observed in focused populations was 60.5%, 66.5% and 55% in Rajput, Awan and Arain casts respectively. This discrimination power will be helpful in human identification for forensic casework studies including sexual assaults and paternity testing.

关键词： STR Pakistani population polymorphism 19-plex Y STR

Alterations in Growth and Yield of Camelina Induced by Different Planting Densities under Water Deficit Stress

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Phyton-International Journal of Experimental Botany 2020年第3期89卷 587-597页

作者： Ejaz Ahmad Waraich Zeeshan ahmed zahoor Ahmad Rashid Ahmad Murat Erman Fatih Cig Ayman El Sabagh Department of Agronomy University of AgricultureFaisalabad38040Pakistan Institute of Ecology and Geography Chinese Academy of SciencesXinjiang830011China Cele National Station of Observation and Research for Desert-Grassland Ecosystem Institute of Ecology and GeographyChinese Academy of SciencesXinjiang848300China Department of Field Crops Faculty of AgricultureCukurova UniversityAdana1380Turkey Department of Field Crops Faculty of AgricultureSiirt UniversitySiirt56100Turkey Agronomy Department Faculty of AgricultureKafr El Sheikh UniversityKafr Elsheikh33511Egypt

Camelina(Camelina sativa L.)is famous for its oil quality and unique fatty acid *** and yield of crops reduced under water deficit *** threat such as drought or water deficit condition is the emerging problem which creates the negative impact on the growth of *** upon the current situation a pot study was performed in rain out-shelter to explore the effect of different plant densities(15,10 and 5 plants per pot)on growth and seed yield of two camelina genotypes under normal(100%WHC)and water deficit(60%WHC)conditions by using completely randomized design with factorial arrangement having three *** indicated that individual effects of plant densities and water deficit stress levels considerably influenced the growth and seed yield of camelina but interaction effects did not indicate any significant *** values of leaf area index(LAI)and crop growth rate(CGR)were recorded in P_(3) treatment(15 plants per pot).However,maximum values of leaf area duration(LAD),net assimilation rate(NAR),yield and yield components were observed in the treatment P_(1)(5 plants per pot).Water deficit condition(60%WHC)significantly minimized the growth,seed yield(0.82 g/m^(2))and yield components of camelina *** camelina genotypes(611 and 618)did not differ significantly under water deficit conditions.

关键词： Camelina sativa crop growth rate net assimilation rate planting density water stress

Methanol as hydrogen source: Chemoselective transfer hydrogenation of α,β-unsaturated ketones with a rhodacycle

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Chinese Journal of Catalysis 2019年第11期40卷 1795-1799页

作者： ahmed H. Aboo Robina Begum Liangliang Zhao zahoor H. Farooqi Jianliang Xiao Department of Chemistry University of Liverpool Liverpool L69 7ZD United Kingdom Institute of Chemistry University of the Punjab New Campus Lahore 54590 Pakistan

Methanol is a safe, economic and easy-to-handle hydrogen source. It has rarely been used in transfer hydrogenation reactions, however. We herein report that a cyclometalated rhodium complex, rhodacycle, catalyzes highly chemoselective hydrogenation of α,β-unsaturated ketones with methanol as the hydrogen source. A wide variety of chalcones, styryl methyl ketones and vinyl methyl ketones, including sterically demanding ones, were reduced to the saturated ketones in refluxing methanol in a short reaction time, with no need for inter gas protection, and no reduction of the carbonyl moieties was observed. The catalysis described provides a practically easy and operationally safe method for the reduction of olefinic bonds in α,β-unsaturated ketone compounds.

关键词： α,β-Unsaturated ketones Transfer hydrogenation Methanol Rhodium complex Chemoselectivity