检索结果-南通市图书馆

Role of Organic Amendments to Mitigate Cd Toxicity and Its Assimilation in Triticum aestivum L.

在线全文

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2022年第11期91卷 2491-2504页

作者： Tauqeer ahmad Yasir Sobia Aslam Muhammad Shahid Rizwan Allah Wasaya Muhammad Ateeq Muhammad naeem Khan Sikander Khan Tanveer Walid Soufan Basharat Ali Allah Ditta Arpna Kumari Ayman EL Sabagh College of Agriculture Bahauddin Zakariya UniversityBahadur Sub-Campus Layyah31200Pakistan Cholistan Institute of Desert Studies The Islamia University of BahawalpurBahawalpur63100Pakistan Directorate General Soil Survey of Punjab Agriculture DepartmentLahore54780Pakistan National Agricultural Research Centre Islamabad44000Pakistan Plant Production Department College of Food and Agriculture SciencesKing Saud UniversityRiyadh11451Saudi Arabia Department of Agricultural Engineering Khwaja Fareed University of Engineering and Information TechnologyRahim Yar Khan64200Pakistan School of Biological Sciences The University of Western AustraliaPerthWA 6009Australia Department of Environmental Sciences Shaheed Benazir Bhutto University SheringalDir(U)Khyber Pakhtunkhwa18000Pakistan Academy of Biology and Biotechnology Southern Federal UniversityRostov-on-Don344006Russia Department of Agronomy Faculty of AgricultureKafrelsheikh UniversityKafr El Sheikh33511Egypt

In soil biota,higher and enduring concentration of heavy metals like cadmium(Cd)is hazardous and associated with great loss in growth,yield,and quality parameters of most of the crop ***,in-situ applications of eco-friendly stabilizing agents in the form of organic modifications have been utilized to mitigate the adverse effects of *** controlled experiment was laid down to appraise the imprints of various applied organic amendments namely poultry manure(PM),farmyard manure(FYM),and sugarcane press mud(PS)to immobilize Cd in polluted ***,phytoavailability of Cd in wheat was also accessed under an alkaline *** revealed that the addition of FYM(5–10 ton ha^(-1))in Cd-contaminated soil significantly increased germination rate,leaf chlorophyll content,plant height,spike length,biological and grain yield amongst all applied organic ***,the addition of FYM(5–10 ton ha^(-1))also reduced the phytoavailability of Cd by 73–85%in the roots,57–83%in the shoots,and 81–90%in grains of wheat ***,it is affirmed that incorporation of FYM(5–10 ton ha^(-1))performed better to enhance wheat growth and yield by remediating ***,the application of FYM(5–10 ton ha^(-1))reduced the toxicity induced by Cd to plants by declining its uptake and translocation as compared to all other applied organic amendments to immobilize Cd under sandy alkaline polluted soil.

关键词： Cadmium toxicity mitigation chlorophyll attributes morphometry yield attributes cereal

An Intelligent Cluster Verification Model Using WSN to Avoid Close Proximity and Control Outbreak of Pandemic in a Massive Crowd

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2022年第11期133卷 327-350页

作者： naeem Ahmed Nawaz Norah Saleh Alghamdi Hanen Karamti Mohammad Ayoub Khan Department of Computer Science Umm Al-Qura UniversityMakkah Al-Mukarmah24381Saudi Arabia Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh11671Saudi Arabia College of Computing and Information Technology University of BishaBisha67714Saudi Arabia

Assemblage at public places for religious or sports events has become an integral part of our *** gatherings pose a challenge at places where fast crowd verification with social distancing(SD)is required,especially during a ***,verification of crowds is carried out in the form of a queue that increases waiting time resulting in congestion,stampede,and the spread of *** article proposes a cluster verification model(CVM)using a wireless sensor network(WSN),single cluster approach(SCA),and split cluster approach(SpCA)to solve the aforementioned problem for pandemic *** show that SD,cluster approaches,and verification by WSN can overcome the management issues by optimizing the cluster size and verification ***,our proposed method minimizes the chances of spreading diseases and stampedes in large events such as a *** consider the assembly points in the annual pilgrimage to Makkah Al-Mukarmah and Umrah for verification using Contiki/Cooja *** compute results such as verified cluster members(CMs)to define cluster size,success rate to determine the best success rate,and verification time to determine the optimal verification time for various *** validate ourmodel by comparing the results of each approach with the existing *** results showthat the SpCAwith SD is the best approach with a 96% success rate and optimization of verification time as compared to SCA with SD and the existing model.

关键词： Cluster verification model wireless sensor network social distancing crowd single approach split approach

Syntheses, Characterization and Crystal Structures of Two Novel Oxazoline Based Titanium Complexes

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 Journal of Structural Chemistry 2015年第7期34卷 1121-1134页

作者： MUHAMMAD Hafeez MUHAMMAD naeem Ahmed SONJA Lippert WINFRIED P.Krtetschmer Department of Chemistry The University of Azad Jammu and Kashmir Inorganic Chemistry II University of Bayreuth

Two novel titanium compounds [（E）-N＇-（2,6-diisopropylphenyl）-N-（2-（4,4-dimethyl-4,5-dihydrooxazol-2-yl）phenyl）benzimidamido]titanium trichloride（1） and [N-（2-（4,4-dimethyl-4,5-dihydrooxaz-ol-2-yl）phenyl）-6-（2,4,6-triisopropyl-phenyl） pyridin-2-amido]titanium trichloride（2） were synthesized by reacting the corresponding ligand with diethylaminetitaniumtrichloride in equal molar ratios. The compounds were characterized with 1H, 13 C NMR, elemental analysis and single-crystal X-ray diffraction analysis. The geometry of both compounds is distorted octahedron. The three nitrogen and one chlorine atoms are in the equatorial plane. Compound 1 crystallizes in orthorhombic system, space group P212121 with a = 10.3520（4）, b = 16.5750（7）, c = 17.1530（7） , Z = 4 and V = 2943.2（2）3. Compound 2 crystalizes in the monoclinic system, space group P21/n with a = 15.6400（11）, b = 10.12.60（7）, c = 22.9120（14）, Z = 4 and V = 3558.5（4）3. The synthesized compounds were employed for ethylene polymerization catalysis. Both complexes showed moderate activity when activated with dry methylaluminoxane（d MAO） and complex 1 produced very high molecular weight polyethylene.

关键词： octahedron polymerization titanium trichloride X-ray

The effect of replacing pnictogen elements on the physical properties of SrMg_2X_2(X=N,P,As,Sb,Bi) Zintl compounds

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2018年第4期27卷 369-375页

作者： G Murtaza Abdul Ahad Khan M Yaseen A Laref naeem Ullah Inayat ur Rahman Materials Modelling Labortary Department of PhysicsIslamia College University Department of Physics University of the Peshawar Department of Physics University of AgricultureFaisalabad Department of Physics and Astronomy College of ScienceKing Saud University Department of Physics City University of Hong Kong

The effect of replacing the anion from N to Bi down the group in the periodic table is investigated on SrMg2X2（X = N,P,As,Sb,Bi）.A full potential linearized augmented plane wave plus local orbitals method is used along with different exchange–correlation potentials to obtain the lattice constants,phonons,electronic,and optical properties of the Sr Mg2X2（X = N,P,As,Sb,Bi） Zintl compounds.A good agreement is achieved and our calculations are validated by previous experimental and theoretical *** compounds have shown stable dynamical behavior with gamma centered longitudinal response having no imaginary *** band structures reveal the semiconducting nature of the *** Pnictogen（X）-p state contributed mainly in the valence band and the Sr-d state forms the conduction of the *** charge transfer and low overlapping of the atomic densities indicates the preferable ionic bonding character of these *** the optical properties,real and imaginary parts of dielectric function,complex refractive index,birefringence,reflectivity,and optical conductivity are *** compounds can be utilized in the optical and optoelectronic devices.

关键词： Zintl compounds band structure optical response

Optimal‑Control‑Based Eco‑Driving Solution for Connected Battery Electric Vehicle on a Signalized Route

在线全文

学校读者我要写书评

暂无评论

Automotive Innovation 2023年第4期6卷 586-596页

作者： Hafiz Muhammad Yasir naeem Yasir Awais Butt Qadeer Ahmed Aamer Iqbal Bhatti Control and Signal Processing Research Group(CASPR) Department of Electrical EngineeringCapital University of Science and Technology(CUST)Islamabad ExpresswayKahuta RoadZone‑V IslamabadIslamabadPakistan Department of Electrical Engineering National University of Technology(NUTECH)IslamabadPakistan Center for Automotive Research Ohio State UniversityColumbusOHUSA

Speed advisory systems have been used for connected vehicles to optimize energy ***,for their practical utilization,presence of preceding vehicles and signals must be taken into ***,for Battery Electric Vehicles(BEVs),factors that deteriorate battery’s life cycle and discharging time must also be *** paper proposes an eco-driving control for connected BEV with traffic signals and other safety *** signals are considered as interior point constraints,while inter-vehicle distance with preceding vehicles,vehicle speed and battery charging/discharging limits,are considered as state safety ***-forward simulator based Speed Guidance Model is applied to follow the optimized velocity under powertrain safety *** of the proposed methodology is tested on a 5.3-km route in Islamabad,*** traffic data using Simulation of Urban Mobility under different driving scenarios is *** the proposed method,around 21% energy can be saved compared to the preceding vehicles that followed their random velocities under the same traffic and route *** means the EV controlled by the proposed method can have longer driving ***,the host BEV has crossed signals during their green time without collision with preceding *** charging rates and terminal Depth of Discharge indicate less number of charging cycles,thus proving the usefulness of the proposed solution as battery’s lifesaving strategy.

关键词： Eco-driving First-order Thevenin model Inter-vehicle safety constraint Interior point constraints

Cache in fog computing design,concepts,contributions,and security issues in machine learning prospective

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Digital Communications and Networks 2023年第5期9卷 1033-1052页

作者： Muhammad Ali naeem Yousaf Bin Zikria Rashid Ali Usman Tariq Yahui Meng Ali Kashif Bashir School of Science Guangdong University of Petrochemical TechnologyMaoming525000China Department of Information and Communication Engineering Yeungnam UniversityGyeongsan38541Republic of Korea Department of Information and Communication Technologies Universitat Pompeu FabraBarcelonaSpain College of Computer Engineering and Sciences Prince Sattam Bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia Department of Computing and Mathematics Manchester Metropolitan UniversityManchesterUnited Kingdom Woxsen School of Business Woxsen UniversityHyderabadIndia Department of Computer Science and Mathematics Lebanese American UniversityBeirutLebanon

The massive growth of diversified smart devices and continuous data generation poses a challenge to communication *** deal with this problem,communication networks consider fog computing as one of promising technologies that can improve overall communication *** brings on-demand services proximate to the end devices and delivers the requested data in a short *** computing faces several issues such as latency,bandwidth,and link utilization due to limited resources and the high processing demands of end *** this end,fog caching plays an imperative role in addressing data dissemination *** study provides a comprehensive discussion of fog computing,Internet of Things(IoTs)and the critical issues related to data security and dissemination in fog ***,we determine the fog-based caching schemes and contribute to deal with the existing issues of fog ***,this paper presents a number of caching schemes with their contributions,benefits,and challenges to overcome the problems and limitations of fog *** also identify machine learning-based approaches for cache security and management in fog computing,as well as several prospective future research directions in caching,fog computing,and machine learning.

关键词： Internet of things Cloud computing Fog computing Caching Latency

Seed Priming and Foliar Supplementation withβ-aminobutyric Acid Alleviates Drought Stress through Mitigation of Oxidative Stress and Enhancement of Antioxidant Defense in Linseed(Linum usitatissimum L.)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2023年第11期92卷 3113-3131页

作者： Tauqeer ahmad Yasir Muhammad Ateeq Allah Wasaya Mubshar Hussain naeem Sarwar Khuram Mubeen Mudassir Aziz Muhammad Aamir Iqbal Chukwuma COgbaga Ibrahim Al-Ashkar Md Atikur Rahman Ayman El Sabagh Department of Agronomy University of LayyahLayyah31200Pakistan Department of Agronomy Bahauddin Zakariya UniversityMultan60000Pakistan State Key Lab of Crop Stress Biology for Arid Areas College of AgronomyNorthwest A&F UniversityYangling712100China Department of Agronomy MNS University of AgricultureMultan60000Pakistan Department of Agronomy Faculty of AgricultureUniversity of Poonch RawalakotRawalakot10250Pakistan Independent Researcher MiddlesbroughNorth YorkshireUK Plant Production Department College of Food and Agriculture SciencesKing Saud UniversityP.O.Box 2460Riyadh11451Saudi Arabia Grassland and Forage Division National Institute of Animal ScienceRural Development AdministrationCheonan31000Korea Department of Field Crops Faculty of AgricultureSiirt UniversitySiirt56100Turkey Department of Agronomy Faculty of AgricultureKafrelsheikh UniversityKafr El-Shaikh33516Egypt

Drought is one of the critical limitations to agricultural soils and crop *** of water is increasing due to climate change that lead to increasing threats to global food ***,ecofriendly and cost effective strategies are highly desirable for mitigating drought stress along with sustainable and smart agricultural *** aim of the study was to mitigate DS using seed priming and exogenous supplementation ofβ-aminobutyric acid(BABA)in linseed(Linum usitatissimum L.).Different doses(0,50,100 and 150μM)of BABA were used for seed priming agent and foliar spraying under three soil moisture levels viz.,25%(SM25),45%(SM45)and 65%(SM65).The response variables of both experiments included different agro-botanical traits and oxidative stress indicators such as melondialdehyde content,free proline accumulation,and antioxidant defense in *** linseed plants showed water stress at SM25 that reduced plant height,number of branches per plant,time taken to flower initiation and heading,and root and shoot dry ***,the number of capsules and seeds per capsule showed a significant decline at SM25,which led to a drastic reduction in 100-seed weight yield in linseed plants in both ***,seed priming and foliar supplementation with of BABA(50–100μM)significantly improved these morpho-agronomical attributes in linseed plants under *** results revealed that the BABA was fully active in linseed plants at ***,the combination of SM25 with BABA significantly improved the antioxidant enzymes superoxide dismutase(SOD),catalase(CAT),ascorbate peroxidase(APX),and peroxidase(POD)activity,which significantly enhanced DS tolerance in linseed *** findings might be useful to oil seed breeders and farmers linseed for breeding program in linseed plants as well as sustainable agricultural production of oil seed crop plants.

关键词： Linseed water stress signaling molecule climate change biostimulant ecofriendly approach sustainable agricultural

Silver modified Cu/SiO2 catalyst for the hydrogenation of methyl acetate to ethanol

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 Journal of Chemical Engineering 2020年第6期28卷 1612-1622页

作者： Zhiheng Ren Muhammad naeem Younis Hui Zhao Chunshan Li Xiangui Yang Erqiang Wang Gongying Wang Chengdu Institute of Organic Chemistry Chinese Academy of SciencesChengdu 610041China National Engineering Laboratory for VOCs Pollution Control Material&Technology University of Chinese Academy of SciencesBeijing 101408China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex SystemsThe National Key Laboratory of Clean and Efficient Coking TechnologyBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Zhongke Langfang Institute of Process Engineering Langfang 065000China Zhongke Langfang Institute of Process Engineering Zhengzhou 450000China School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China

A series of silver modified Cu/SiO2 catalysts were synthesized with ammonia-evaporation method and applied in vapor-phase hydrogenation of methyl acetate to *** influence of additive‘Ag’on the structural evolution of catalyst was systematically studied by several characterization techniques,such as N2 adsorption–desorption,N2O titration,PXRD,FTIR,in-situ FTIR,H2-TPR,H2-TPD,XPS and *** showed that incorporation of a small amount of Ag could enhance the structural stability,and the strong interaction between Cu and Ag species was conducive to increase the dispersion of copper species and create a suitable Cu+/(Cu0+Cu+)ratio,which was proposed to be responsible for the improved catalytic *** maximum conversion of MA(94.1%)and selectivity of ethanol(91.3%)over optimized Cu-0.5 Ag/SiO2 and 120 h on stream without deactivation under optimal conditions demonstrates its excellent stability.

关键词： Copper Silver Hydrogenation Methyl acetate Ethanol Kinetic

Bio-templated Fabrication and Remote Actuation of Pollen-Based Magnetic Microcapsules for Active Cargo Delivery

在线全文

学校读者我要写书评

暂无评论

Bio-templated Fabrication and Remote Actuation of Pollen-Bas...

作者： Muhammad Zeeshan naeem 福建工程学院

学位级别：硕士

纳米技术的主要目标是制造能够在环境和生物医学领域中发挥多重作用的微型机器以取代宏观小型装置。微纳米机器人不仅在纳米技术领域引起了广泛的关注,而且也在医学等其他科学领域也引起了广泛的关注。许多科学家正努力通过开发新的策略... 详细信息

纳米技术的主要目标是制造能够在环境和生物医学领域中发挥多重作用的微型机器以取代宏观小型装置。微纳米机器人不仅在纳米技术领域引起了广泛的关注,而且也在医学等其他科学领域也引起了广泛的关注。许多科学家正努力通过开发新的策略,例如,微纳米机器的功能性、广泛性、运动可控性等来推动其发展。研究人员报道,微纳米机器人能够熟练地通过狭窄的毛细血管或复杂的生物介质并进行导航,完成诊断、取样活检、体内成像和靶向释放人体受损组织等操作。微纳米机器人在体内的应用证实了它们在组织穿透、货物装载和保留等方面能力的改进。这些微纳米机器人以其装载药物和高效递送药物的能力有望替代医疗机器人。此外,这些微纳米机器人不需要使用任何电池或电缆来操作或控制它们,它们可以通过光、化学、超声、电和磁场等外场力等进行远程驱动及操控。磁性微纳米颗粒种类众多,但在纳米医学领域中,具有超顺磁性的纳米颗粒如磁铁矿(FeO)和磁赤铁矿(γ-FeO)被认为具有很大的潜力。由于它们的生物相容性和超顺磁性,这些纳米颗粒得到了广泛的应用。它们在磁场作用下会迅速磁化或退磁,表现出低的磁滞性,并且可以通过在磁性纳米颗粒表面修饰上不同的物质,使其功能化以适应特定的医学和治疗用途。由于合成具有柔性结构和性能的微纳米机器人具有挑战性且成本高昂,因此我们可以利用具有柔性结构的天然生物来制造微纳米机器人。许多基于生物相容性材料的微纳米机器人都可以被降解,并且在处理后就可以分离。在仿生合成方面,许多有机结构被用于完整的生物系统,如微生物、类病毒颗粒、蜘蛛丝和花粉等。研究学者们对具有复杂结构的微米尺度壳体的设计进行了无数次的尝试,但迄今为止都没有取得成功。在过去的几十年里出现了各种不同的制造技术,但大自然有能力制造出仿真的复杂微胶囊结构,例如微大小的花粉颗粒,可以将生物材料在一个保护性的外壳中保存很长一段时间。在自然界中,花粉起着保护作用,防止遗传物质因脱水、光照和微生物的攻击而降解。随着越来越多的研究人员认识到花粉及其结构的独特性,及其可大批量生产和可收集性,研究人员对花粉及其结构展开广泛的制备研究。在本研究中,我们利用两种花粉(茶花、莲花)作为模板,在其表面修饰微磁颗粒用以包封药物及执行应用。花粉的多孔中空腔体结构使其适于装载所需的药物,并能降解污水或吸附水中有害重金属。将每个品种的花粉进行脱脂处理,然后采用提取技术收集微胶囊壳体结构。提取技术为利用4M盐酸溶液,使用恒温集热式磁力搅拌器将花粉和盐酸的混合物加热至70o摄氏度反应12小时。胶囊壳体的提取对于实现装药的目的是必不可少的。我们已经使用了两种不同的制造方法(机械搅拌法,超声化学法),这在大规模制造方面是安全且经济有效的。这些装载技术成功地将前体沉积在生物模板表面,并赋予其磁性。以莲花花粉为生物模板,采用机械搅拌和超声化学两种不同的技术,在70℃条件下反应2h。在本研究中,我们通过控制温度、浓度和时间来控制花粉表面沉积物质的厚度。我们使用了不同的沉积时间(1.5h,2h,2.5h,4h和6h)来研究时间对沉积层的影响。结果表明,随着时间的延长,花粉表面沉积前驱体的分布受到影响。另一方面,用不同浓度(0.1M、0.5M、0.05M、0.15M)的Fe Cl溶液观察花粉表面纳米颗粒的沉积情况。前驱体沉积于花粉表面后,在真空炉下进行550℃-30min的退火处理。在这种退火处理中,观察到花粉颗粒发生缩小,导致遗传物质从腔体中消失。研究表明,随着Fe Cl溶液浓度的增加,前驱体会形成一层薄薄的前驱体。此外,在用机械搅拌法制备的花粉时,浓度为0.1M的样品表面均匀负载上致密的磁性颗粒壳层。花粉壳的独特结构和强度在超声化学技术制造过程中显示出了良好的效果,这种方法已应用于各种微纳米材料制造。在本研究中,我们以莲花花粉为模板,使用一步超声化学法在70°C条件下反应2小时制备纳米颗粒,仪器的超声频率设置为(40khz,2W cm)。在这一过程中,花粉的结构得到保持,但花粉粒表面前体的分布不均匀。接着在550℃下退火30min,利用SEM、EDS和XRD等技术对这些前体颗粒进行分析。结果表明,0.25M的样品具有明显的前驱体沉积的和较好的磁性能。其中磁性能是通过磁铁吸引加以证明。比较了两种制备方法的XRD谱图,发现机械搅拌法更适合以莲花花粉为生物模板制备磁性微颗粒。并通过甲基蓝(MB)的吸附实验计算其吸附率。实验结果表明MB吸附率为95%,吸附量为7.6 mg/g。最后,通过施加30 GS-8GH的外部磁场,莲花粉以不同的方式(滚动、旋转)实现运动。这些磁性粒子的成功驱动表明,它们在医疗和环境应用方面存在潜力。用茶花粉为模板制备微型机器人,采用两种不同的制备方法,在70℃下反应2h合成磁性微颗粒。茶花花粉的形状呈三角形,在花粉粒的表面含有大量的空隙。花粉的外层存在

关键词：微/纳米机器人花粉生物模板制造磁驱动主动传递