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International Journal of Biom.them.tics 2018年第8期11卷 217-234页

作者： R. Gul A. Shahzad m. zubair COm.ATS Institute of Inform.tion Technology Abbottabad Pakistan

In this paper, a m.lti-com.artm.nt 0D m.del of the blood flow is considered to study the vessel abnorm.lities (stenoses and aneurysm.) in the hum.n system.c circulation (SC). In the com.lete SC, different levels of stenosis and aneurysm. are artificially created by decreasing and increasing the vessel diam.ters respectively and their effects on pressure and flow are studied using sensitivity analysis (SA). Norm.lized local sensitivity analysis (LSA) is used to study the im.act of stenosis and aneurysm. on pressure and flow wave pattern. Furtherm.re, global sensitivity analysis (GSA), Sobol's m.thod is used to quantify the overall influence of stenoses and aneurysm. in the com.lete SC. The results of global sensitivity analysis revealed that the im.act of both stenoses and aneurysm. is strong within the individual structures (arm. legs, carotid bifurcation, aorta), while, aortic stenoses and aneurysm. have effect on alm.st all downstream.nodes. m.reover, the study could be useful for m.dical doctors, teachers and students to observe the hem.dynam.cal changes in the SC with respect to vessel abnorm.lities, which could further help in m.king any clinical decision for patients having different levels of vessel abnorm.lities in any part or structure of the SC.

关键词： 0D m.del system.c circulation sensitivity analysis stenosis aneurysm.

A facile fabrication route for binary transition m.tal oxide-based Janus nanoparticles for cancer theranostic applications

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Nano Research 2018年第10期11卷 5735-5750页

作者： m. zubair Iqbal Wenzhi Ren m.diha Saeed Tianxiang Chen Xuehua m. Xu Yu Jichao Zhang Lili Zhang Aiguo Li Aiguo Wu iang Province & Division of Functional Materials and Nano devices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China ShanghaiSynchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai201204 China

Janus nanoparticles （JNPs） have m.ltiple configurations for m.lecular im.ging, targeting, and therapeutic effects on cancers; these properties have m.de these particles attractive for biom.dical applications. Nonetheless, sm.rt strategies for the controlled synthesis in a liquid phase and exploration of the appropriate applications of JNPs rem.in a challenge. In this study, a unique liquid-phase m.thod was applied to fabricate m.3O4-TiO2/ZnO/Fe3O4 m.ltifunctional binary transition m.tal oxide-based JNPs, using the concept of epitaxial growth and lattice m.sm.tch am.ng synthesized m.terials. Transm.ssion electron m.croscopy and scanning transm.ssion electron m.croscopy results revealed that the created m.terials are em.edded in the form.of dim.rs with good dispersion and hom.geneous growth in a nonpolar solvent. Pluronic F-127-coated m.BO4- TiO2 JNPs were utilized as a contrast agent in T1-weighted m.gnetic resonance im.ging （m.I） and in photodynam.c therapy （PDT） for cancers in vitro and in vivo. In vivo T1-weighted m.I of the heart, liver, and kidneys in m.ce after intravenous injection of the nanoparticles revealed high sensitivity and biocom.atibility of as-synthesized m.3O4--TiO2 JNPs. Results of synchrotron X-ray fluorescence m.croscopy m.pping showed the stability of the nanocom.osites and efficiency of penetration into the cytoplasm.and perinuclear area. Inorganic TiO2 photosensitizers showed prom.sing tum.r ablation perform.nce in PDT in vitro and in vivo at low intensity of UV irradiation （5.6 ***-2） because of their ultrasm.ll size and photodegradable stability. These results reveal that m.ltifunctional m.3O4-TiO2 JNPs enhance a T1-weighted m.I contrast and have excellent properties for PDT and therefore, m.y be a novel agent for cancer theranostics.

关键词： Janus nanostructures m.nganese oxide m.gnetic resonance im.ging photodynarnic therapy breast cancer

不同通风策略下大规模鸭粪堆肥的腐熟和光谱特征

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植物营养与肥料学报 2024年第3期30卷 575-586页

作者： zubair m.ham.ad 柳夏艳李兆君王建才朱荣生山东省农业科学院畜牧兽医研究所山东济南250100 北京林业大学/水体污染源控制技术重点实验室北京100083 中国农业科学院农业资源与农业区划研究所北京100081

[目的]鉴于鸭粪处理的固有挑战,有效的通风措施是鸭粪工业堆肥过程成功的关键。这项开创性的研究旨在评估来自鸭粪和蘑菇废弃物堆肥的腐熟度和稳定性。本研究进一步探讨了各种通风策略在促进堆肥过程中有机物分解和转化方面的有效性和... 详细信息

[目的]鉴于鸭粪处理的固有挑战,有效的通风措施是鸭粪工业堆肥过程成功的关键。这项开创性的研究旨在评估来自鸭粪和蘑菇废弃物堆肥的腐熟度和稳定性。本研究进一步探讨了各种通风策略在促进堆肥过程中有机物分解和转化方面的有效性和效率。[方法]将鸭肥和蘑菇废弃物按干重比为2∶1(C/N约为21.15)混合进行堆肥试验。堆肥采用梯形桩,每桩体积5.6 m.(3),采用管道通风。堆肥试验包括4个通气时间处理,分别为10、20、30、60 m.n/d(分别记作C1、C2、C3和C4处理)。主要研究了堆肥过程中物理化学特性、紫外-可见光谱、X射线衍射(XRD)和红外光谱(IR)的变化特征。[结果]在堆肥第5天和第6天,堆肥进入嗜热期,持续17天,第15天达到50℃。在堆肥前5天,堆肥pH从8.5迅速上升到12.3,可能是由于鸭粪蛋白质的分解,然后在接下来的20天里逐渐下降,在28~30天急剧下降,之后逐渐下降。在高温期(第17天)后,堆肥C1、C2、C3和C4处理的含水量较堆肥初期分别减少了45.9%、46%、44.7%和43%。C3和C4处理的TC值远低于C1和C2。所有堆肥处理的紫外吸收均随波长的增加而降低。在X射线衍射图中存在部分纤维素特征峰(2θ=26.56°)。这些样品含有更多的结晶和“无定形”纤维素、木聚糖和其他多糖。在200~220 nm.谱范围内,硝酸盐和羧基类化学物质的吸收速度比芳香族或不饱和分子快。堆肥的吸收率随初始碳氮比和堆肥过程的持续时间而变化。相反,在460~480 nm.的吸光度表明有机材料的腐殖质化。Q2/6或Q4/6值越低,表明有机物腐殖化程度越高和越多的有机物缩合成芳香族化合物。在红外光谱中,整个堆肥过程中与有机或无机官能团相关的所有条带的强度都有明显的变化。红外光谱显示出一个宽峰,中心波数为3400 cm.(-1),表明存在与羟基(OH)基团和水分子相关的拉伸振动。在3000~2800 cm.(-1)的光谱范围内,可以观察到一个与有机化合物所表现出的疏水特性相关的现象。在2900~2850 cm.(-1)处存在的条带可以归因于C-H脂肪族基团和醛基基团(CHO)的伸缩振动。初始堆肥样品和C1、C2、C3、C4的红外光谱在堆肥过程中发生了显著变化。由于这些变化,红外光谱吸收带发生了显著的变化,表明相关的物质结构发生了变化。因此,C3和C4在堆肥过程中表现出较高程度的稳定性。[结论]65天的堆肥试验显示,在整个堆肥过程中,温度发生变化,通风60 m.n/d的堆肥最高温度高于通风10 m.n/d的堆肥。在堆肥过程中,随着通气量的增加,pH呈下降趋势,因此,日通风30~60 m.n的堆肥pH较低。堆肥过程中,堆料C/N逐渐降低,表明纤维素活性增加。XRD光谱显示峰值强度降低,反映了纤维素的分解。日通风30~60 m.n堆肥表现出较高的成熟度,突出了通风对成功堆肥的重要性。

关键词：鸭粪蘑菇废弃物堆肥通风成熟度

Physical aspects of anisotropic com.act stars in f(T,T) gravity with off diagonal tetrad

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Chinese Physics C 2021年第8期45卷 190-205页

作者： m.zubair Allah Ditta G.Abbas Rabia Saleem Departm.nt of m.them.tics COMSATS University IslamabadLahore CampusLahorePakistan Departm.nt of m.them.tics The Islamia University of BahawalpurBahawalpurPakistan

This study addresses the form.tion of anisotropic com.act star m.dels in the background of f(T,T)gravity(where T and T represent the torsion and trace of the energy m.m.ntum.tensor,respectively).f(T,T)gravity is an extension of the f(T)theory,and it allows a general non-m.nim.l coupling between T and *** this setup,we apply Krori and Barua's solution to the static spacetim. with the com.onents ξ=Br^(2)+c and ψ=Ar^(2).To develop viable solutions,we select a well-known m.del f(T,T)=αT^(m.+βT+Ф(where α and β are coupling param.ters,and Ф indicates the cosm.logical constant).We adopt the conventional m.tching of interior and exterior space tim. to evaluate the unknowns,which are em.loyed in the stellar *** present a com.rehensive discussion on the stellar properties to elaborate the anisotropic nature of com.act stars corresponding to well-known m.dels:PSRJ1416-2230,4U1608-52,CenX-3,EXO1785-248,and *** physical analysis,it is observed that the solution of com.act spheres satisfy the acceptability criteria,and its m.dels behave optim.lly and depict stability and consistency,in accordance with f(T,T)gravity.

关键词： f(T,T)gravity com.act stars stellar m.dels

REE geochem.stry of core sedim.nts of Cauvery delta,India for provenance studies

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Acta Geochim.ca 2020年第4期39卷 512-526页

作者： m.lik zubair Ahm.d Pram.d Singh Departm.nt of Geology Satellite Campus LehUniversity of KashmirLehJammu&Kashmir 194104India Departm.nt of Earth Sciences School of Physical Chemical and Applied SciencesPondicherry UniversityKalapetPondicherry 605014India

The rare earth elem.nt(REE)geochem.cal com.osition of sedim.nts from.two cores were used to investigate the provenances of the Late Pleistocene to Holocene sedim.nts of Cauvery delta,South *** chondrite-norm.lized REE patterns and bi-variant plots of Th/Co ***/Sc and La/Th ***/Yb indicated felsic source of ***-norm.lized plots of REE in both cores are alm.st parallel and exhibit sim.lar fractionation ratio(Ce/Yb)_N of^***,persistence in REEs patterns im.lies either uniform.source rocks and/or efficient hom.genization of sedim.nts during transportation and ***-norm.lized patterns of the sam.les show enrichm.nt of light rare earth elem.nts and flat pattern of heavy rare earth elem.nts;such patterns im.ly dom.nance of felsic com.osition rocks in the ***,these sam.les show quite resem.lance with Charnockites and Gneisses of Palani and Kodaikanal hill ***-norm.lized REE patterns of the Pleistocene sedim.nts of Uttrangudi core show sim.lar abundance,fractionation,and Eu anom.ly values as of selected sam.les from.Tertiary rocks near southwest part of the *** attribute the increased input from.this region to the upliftm.nt because of tectonic activity and lowering of sea level during the Pleistocene.

关键词： Delta sedim.nts REEs Provenance Rainfall Relief

Brownian m.tion and therm.phoresis effects on unsteady stagnation point flow of Eyring-Powell nanofluid: a Galerkin approach

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Com.unications in Theoretical Physics 2020年第12期72卷 71-82页

作者： Z H Khan m.Usm.n T zubair m.Ham.d R U Haq State Key Laboratory of Hydraulics and m.untain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu610065China BIC-ESAT College of EngineeringPeking UniversityBeijing 100871China State Key Laboratory for Turbulence and Com.lex System. Department of Mechanics and Engineering SciencePeking UniversityBeijing 100871China Institute of Ocean Research Peking UniversityBeijing 100871China School of m.them.tical Sciences Peking UniversityBeijing 100871China Departm.nt of m.chanics and Engineering Science Fudan UniversityShanghai 200433China Departm.nt of Electrical Engineering Bahria UniversityIslamabad CampusIslamabad 44000Pakistan

This article concerns the analysis of an unsteady stagnation point flow of Eyring–Powell nanofluid over a stretching *** influence of therm.phoresis and Brownian m.tion is also considered in transport *** nonlinear ODE set is obtained from.the governing nonlinear equations via suitable *** num.rical experim.nts are perform.d using the Galerkin schem..A tabular form.com.arison analysis of outcom.s attained via the Galerkin approach and num.rical schem.(RK-4)is available to show the credibility of the Galerkin *** num.rical exploration is carried out for various governing param.ters,nam.ly,Brownian m.tion,steadiness,therm.phoresis,stretching ratio,velocity slip,concentration slip,therm.l slip,and fluid param.ters,and Hartm.nn,Prandtl and Schm.dt *** velocity of fluid enhances with an increase in fluid and m.gnetic param.ters for the case of opposing,but the behavior is reversed for assisting *** Brownian m.tion and therm.phoresis param.ters cause an increase in tem.erature for both cases(assisting and opposing).The Brownian m.tion param.ter provides a drop-in concentration while an increase is noticed for the therm.phoresis *** the outcom.s and the behavior of em.rging param.ters are illustrated *** com.arison analysis and graphical plots endorse the appropriateness of the Galerkin *** is concluded that said m.thod could be extended to other problem. of a com.lex nature.

关键词： Eyring-Powell fluid stagnation point flow Brownian m.tion and therm.phoresis Galerkin m.thod

Core-shell particles of C-doped CdS and graphene: A noble m.tal-free approach for efficient photocatalytic H_(2) generation

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Green Energy & Environm.nt 2020年第4期5卷 461-472页

作者： m.ham.ad zubair Estelle m.rie m.Vanhaecke Ingeborg-Helene Svenum.m.gnus RФnning Jia Yang Departm.nt of Chem.cal Engineering Norwegian University of Science and Technology(NTNU)Sem Sælands vei 4TrondheimNO7491Norway SINTEF Industry P.O.Box 4760 TorgardenTrondheimNO7465Norway

To achieve efficient photocatalytic H_(2) generation from.water using earth-abundant and cost-effective m.terials,a sim.le synthesis m.thod for carbon-doped CdS particles wrapped with graphene(C-doped CdS@G)is *** doping effect and the application of graphene as cocatalyst for CdS is studied for photocatalytic H_(2) *** m.st active sam.le consists of CdS and graphene(CdS-0.15G)exhibits prom.sing photocatalytic activity,producing 3.12 m.ol g^-(1) h^-(1) of H_(2) under sim.lated solar light which is^4.6 tim.s superior than pure CdS nanoparticles giving an apparent quantum.efficiency(AQY)of 11.7%.The enhanced photocatalytic activity for H_(2) generation is associated to the narrowing of the bandgap,enhanced light absorption,fast interfacial charge transfer,and higher carrier density(N_(D))in C-doped CdS@G *** is achieved by C doping in CdS nanoparticles and the form.tion of a graphene shell over the C-doped CdS *** stability test,the spent catalysts sam.le was also characterized to investigate the nanostructure.

关键词： C-doped CdS@G Core-shell nanostructure Photocatalytic H2 generation Graphene Carbon doping in CdS Bandgap narrowing

Galerkin Finite Elem.nt Study on the Effects of Variable Therm.l Conductivity and Variable m.ss Diffusion Conductance on Heat and m.ss Transfer

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Com.unications in Theoretical Physics 2018年第7期69卷 49-59页

作者： Im.an Haider Qureshi m.Nawaz Shafia Rana T.zubair Departm.nt of Applied m.them.tics and Statistics Institute of Space and TechnologyIslamabad

This article investigates the effects of variable therm.l conductivity and variable m.ss diffusion coefficient on the transport of heat and m.ss in the flow of Casson fluid. Num.rical sim.lations for two-dim.nsional flow induced by stretching surface are perform.d by using Galerkin finite elem.nt m.thod(GFEm. with linear shape functions. After assem.ly process, nonlinear algebraic equations are linearized through Picard m.thod and resulting linear system.is solved iteratively using Gauss Seidal m.thod with sim.lation tolerance 10^(-8). m.xim.m.value of independent variableη is searched through num.rical experim.nts. Grid independent study was carried out and error analysis is *** results are validated by com.aring with already published results. Param.tric study is carried out to explore the physics of the flow. The concentration increases when m.ss diffusion coefficient is increased. The concentration and therm.l boundary layer thicknesses increase when ?_1 and ? are increased. The effect of generative chem.cal reaction on concentration is opposite to the effect of destructive chem.cal reaction on the concentration.

关键词： variable diffusion coefficients grid independent study convergence error analysis Nusselt num.ber Casson fluid Joule heating viscous dissipation

Effect of pressure on the electrical properties of flexible NiPc thin film. fabricated by rubbing-in technology

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Chinese Physics B 2021年第1期30卷 328-331页

作者： Khasan S Karim.v Fahm. F m.ham.adsharif zubair Ahm.d m.m.qeet Rehm.n Rashid Ali GIK Institute of Engineering Sciences and Technology TopiDistrict SwabiKPK23640Pakistan Center for Innovative Developm.nt of Science and New Technologies of Academ. of Sciences of Tajikistan Dushanbe734025 Departm.nt of Physics Faculty of Science and HealthKoya University44023 KoyaKurdistan Region-F.R.Iraq Center for Advanced m.terials(CAm. Qatar UniversityP.O.Box 2713DohaQatar Departm.nt of Electronic Engineering Jeju National UniversityJejuRepublic of Korea

Nickel phthalocyanine(Ni Pc) film.was deposited onto the surface of flexible conductive glass by rubbing-in technology and used to fabricate devices based on ITO/Ni Pc/CNT/rubber structure. The I–V characteristics of the devices were investigated under different uniaxial pressures of 200, 280, and 480 gf/cm.(2), applied perpendicular to the surface of the Ni Pc film. Results showed that the nonlinearity coefficients of the I–V curves are in the range of 2 to 3, which was found to be decreased with the increase of the pressure. The rectification ratio of the devices was estim.ted to be varied from.1.5 to 3 based on the applied pressure. Concluding, the resistance of the active layers was decreased with the increase of both pressure and voltage. We believe that using the rubbing-in technology under sufficient applied pressure it is possible to utilize Ni Pc for the developm.nt of various electronic devices such as diodes, nonlinear resistors, and sensors.

关键词： pressure electrical property NiPc thin film rubbing-in technology

m.lti-objective vendor m.naged inventory system.with interval type-2 fuzzy dem.nd and order quantities

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International Journal of Intelligent Com.uting and Cybernetics 2021年第3期14卷 439-466页

作者： zubair Ashraf m.ham.ad Shahid South Asian University New DelhiIndiaand Aligarh m.slim.University AligarhIndia

Purpose-The proposed IT2Fm.Vm. m.del intends to concurrently m.nim.ze total cost and warehouse space for the single vendor-retailer,m.lti-item.and a consolidated vendor *** dem.nd and order quantities with the determ.nistic and type-1 fuzzy num.ers,we have also form.lated the classic/crisp m.Vm. m.del and type-1 fuzzy m.Vm.(T1Fm.Vm.)*** suggested solution technique can solve both crisp m.Vm.and *** finding the optim.l ordered quantities and backorder levels,the Paretofronts are constructed to form.the solution sets for the three ***/m.thodology/approach-A m.lti-objective vendor m.naged inventory(m.Vm.)is the m.st recognized m.rketing and delivery technique for the service provider and the retail in the supply chain in Industry *** to the evolving m.rket conditions,the characteristics of the individual product,the delivery period and the m.nufacturing costs,the dem.nd rate and order quantity of the m.Vm. device are highly *** such a scenario,a m.Vm. system.with a determ.nistic dem.nd rate and order quantity cannot be designed to estim.te the highly unforeseen cost of the *** paper introduces a novel interval type-2 fuzzy m.lti-objective vendor m.naged inventory(IT2Fm.Vm.)system.which uses interval type-2 fuzzy num.ers(IT2FNs)to represent dem.nd rate and order *** the m.del is an NP-hard,the well-known m.ta-heuristic algorithm.nam.d NSGA-II(Non-dom.nated sorted genetic algorithm.II)with EKm.Enhanced Karnink-m.ndel)algorithm.based solution m.thod has been ***-The experim.ntal sim.lations for the five test problem. that dem.nstrated distinct conditions are considered from.the real-datasets of SAPCO *** study concludes that T1Fm.Vm. and crisp m.Vm. schem.s are outclassed by IT2Fm.Vm. m.del,offering m.re accurate Pareto-Fronts and efficiency m.asurem.nt ***/value-Using fuzzy sets theory,a significant am.unt of work has been already done in past

关键词： m.lti-objective vendor m.naged inventory Interval type-2 fuzzy dem.nd Interval type-2 fuzzy ordered quantity Industry 4.0 NSGA-II