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Dynamics of bioconvection flow of micropolar nanoparticles with Cattaneo-Christov expressions

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Applied Mathematics and Mechanics(English Edition) 2020年第9期41卷 1333-1344页

作者： s.A.sHEHZAD T.MusHTAQ Z.ABBAs A.RAuF s.u.khan I.TLILI Department of Mathematics COMSATS University IslamabadSahiwal 57000Pakistan Department of Mathematics COMSATS University IslamabadVehari 61100Pakistan Department of Mathematics The Islamia University of BahawalpurBahawalpur 63100Pakistan Institute of Research and Development Duy Tan UniversityDa Nang 550000Vietnam Faculty of Civil Engineering Duy Tan UniversityDa Nang 550000Vietnam

A numerical analysis is performed to analyze the bioconvective double diffusive micropolar non-Newtonian nanofluid flow caused by stationary porous *** consequences of the current flow problem are further extended by incorporating the Brownian and thermophoresis *** energy and mass species equations are developed by utilizing the Cattaneo and Christov model of heat-mass *** flow equations are converted into an ordinary differential model by employing the appropriate *** numerical solution is reported by using the MATLAB builtin bvp4c *** consequences of engineering parameters on the flow velocity,the concentration,the microorganisms,and the temperature profiles are evaluated *** numerical data for fascinating physical quantities,namely,the motile density number,the local sherwood number,and the local Nusselt number,are calculated and executed against various parametric *** microrotation magnitude reduces for increasing magnetic *** intensity of the applied magnetic field may be utilized to reduce the angular rotation which occurs in the lubrication processes,especially in the suspension of *** the account of industrial applications,the constituted output can be useful to enhance the energy transport efficacy and microbial fuel cells.

关键词： bioconvection flow micropolar fluid nanoparticle Cattaneo-Christov theory porous disk

狄氏剂、二氯苯醚菊酯及呋喃丹在小萝卜中的结合残留

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原子能农业译丛 1985年第3期 46-48页

作者： s.u.khan 孙锦荷

示踪研究表明,在植物中有相当部分的农药残留物可转变成不可提取的结合态。如不进行化学转变,它们的提取是很困难的,并且用常规方法进行检测、鉴定也很困难。本试验用14C-狄氏剂、14C-二氯苯醚菊酯和14C-呋喃丹研究了小萝卜中的结合残... 详细信息

示踪研究表明,在植物中有相当部分的农药残留物可转变成不可提取的结合态。如不进行化学转变,它们的提取是很困难的,并且用常规方法进行检测、鉴定也很困难。本试验用14C-狄氏剂、14C-二氯苯醚菊酯和14C-呋喃丹研究了小萝卜中的结合残留物的性质。

关键词：狄氏剂萝卜二氯苯分析流程苯醚有机氯杀虫剂根菜类蔬菜氯代烃酚醚结合残留残留物

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巴基斯坦原发性耐多药结核病流行情况

国际结核病与肺部疾病杂志 2008年第2期3卷 73-77页

作者： A.Javaid R.Hasan A.Zafar A.Ghafoor A.J.Pathan A.Rab A.sadiq C.M.Akram I.Burki K.shah M.Ansari N.Rizvi s.u.khan s.R.Awan Z.A.syed Z.H.lqbal Z.shaheen N.ur Rehman 邢超 Department of Pulmonology Postgraduate Medical InstituteLady Reading Hospital Peshawar Department of Microbiology Agha Khan University HospitalKarachi TB Control Programme North West Frontier Province(NWFP)Peshawar Institute of Chest Diseases Kotri Department of Pulmonology Ayub Teaching HospitalAbbotabad Oiha Institute of Chest Diseases Karachi Gulab Devi Hospital Lahore Lyari General Hospital Karachi National TB Control Programme Islamabad Liaqat National Hospital Karachi Jinnah Postgraduate Medical Centre Karachi King Edwards Medical university Lahore Nishtar Medical College Multan Allama Iqbal Medical Lahore Wyeth(Pvt) Limited KarachiPakistan

背景:巴基斯坦是世界第6位结核病高负担国家。据世界卫生组织(WHO)估计,巴基斯坦结核病发病率为181/10万,全国每年新增结核病患者28.6万例。来自于医院的资料表明:巴基斯坦耐多药结核病(MDR-TB)问题已十分严重,急需在社区水平对耐多药... 详细信息

背景:巴基斯坦是世界第6位结核病高负担国家。据世界卫生组织(WHO)估计,巴基斯坦结核病发病率为181/10万,全国每年新增结核病患者28.6万例。来自于医院的资料表明:巴基斯坦耐多药结核病(MDR-TB)问题已十分严重,急需在社区水平对耐多药结核病的严重程度开展评估。本研究为针对巴基斯坦耐药结核病流行状况开展的横段面研究,所使用的痰标本来自于巴基斯坦全国742例未经治疗的新诊断的肺结核患者。目的:评估巴基斯坦原发性耐药的流行情况结果:在672例痰培养阳性患者中,有76例(11.3%)出现了对1种或多种抗结核药物耐药。36例(5.4%)患者对链霉素(10μg/ml)耐药; 51例(7.6%)患者对异烟肼(1μg/ml)耐药;15例(2.2%)患者对利福平(5μg/ml)耐药;12例(1.8%)患者对乙胺丁醇(10μg/ml)耐药;22例(3.3%)患者对吡嗪酰胺耐药。有46例(6.8%)患者痰标本中分离的结核菌株耐1种抗结核药物, 10例(1.5%)同时耐2种抗结核药物,12例(1.8%)同时耐3种抗结核药物,6例(0.9%)同时耐4种抗结核药物,2例(0.3%)同时耐全部5种抗结核一线药。原发性耐多药率为1.8%,(n= 12)(异烟肼1μg/ml,利福平5μg/ml)。结论:研究结果表明,巴基斯坦原发性耐多药率s策略。

关键词：原发性耐药耐多药结核病巴基斯坦

Correction of failure in antenna array using matrix pencil technique

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Chinese Physics B 2017年第6期26卷 491-498页

作者： s.u.khan M K A Rahim Advanced RF & Microwave Research Group Department of Communication Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia

In this paper a non-iterative technique is developed for the correction of faulty antenna array based on matrix pencil technique（MPT）. The failure of a sensor in antenna array can damage the radiation power pattern in terms of sidelobes level and nulls. In the developed technique, the radiation pattern of the array is sampled to form discrete power pattern information set. Then this information set can be arranged in the form of Hankel matrix（HM） and execute the singular value decomposition（sVD）. By removing nonprincipal values, we obtain an optimum lower rank estimation of HM. This lower rank matrix corresponds to the corrected pattern. Then the proposed technique is employed to recover the weight excitation and position allocations from the estimated matrix. Numerical simulations confirm the efficiency of the proposed technique, which is compared with the available techniques in terms of sidelobes level and nulls.

关键词： array correction low rank estimation matrix pencil technique singular value decomposition

On the detection of closed orbits in time-dependent systems by using double-pulse lasers

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Communications in Theoretical Physics 2020年第9期72卷 111-117页

作者： s.u.khan M L Du Institute of Theoretical Physics Chinese Academy of Sciences.Beijing 100190China university of Chinese Academy of sciences Beijing100049China

In the photodetachment of atoms or negative ions by a double-pulse laser, the first pulse of the double-pulse laser generates waves and the delayed second pulse may detect them. The phenomenon of the excitation and detection of waves by a double-pulse laser can be used to identify the closed orbits in the system. We demonstrate this phenomenon with a negative hydrogen ion(H^-) by analyzing the total population excited by a double-pulse laser in a timedependent field for different physical parameters. By analyzing the total excited population using a double-pulse laser, we can uncover all the closed orbits existing in the system. We demonstrate that this can be realized by scanning the first pulse position and the time delay between the two pulses.

关键词： double-pulse laser detection of closed orbits photodetachment spectra time-dependent systems

Formation of Co-implanted silicon ultra-shallow Junctions for Low Thermal Budget Applications

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Chinese Physics Letters 2013年第1期30卷 127-129页

作者： Rehana Mustafa s.Ahmed E.u.khan Department of Physics International Islamic UniversityIslamabadPakistan Advanced Electronics Laboratory Faculty of Engineering&TechnologyInternational Islamic University IslamabadPakistan Center for Emerging sciences Engineering and TechnologyIslamabadPakistan Department of Physics Gomal UniversityD.I.KhanPakistan

We present a systematic study to create ultra-shallow junctions in n-type silicon substrates and investigate both pre-and post-annealing processes to create a processing strategy for potential applications in *** wafers were co-implanted with indium and C atoms at energies of 70 keV and 10 keV,respectively.A carefully chosen implantation schedule provides an abrupt ultra-shallow junction between 17 and 43 nm with suppressed sheet resistance and appropriate retained sheet carrier concentration at low thermal budget.A defect doping matrix,primarily the behavior and movement of co-implant generated interstitials at different annealing temperatures,may be engineered to form sufficiently activated ultra-shallow devices.

关键词： shallow annealing implantation

swine flu pandemic:a global concern

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Asian Pacific Journal of Tropical Medicine 2010年第1期3卷 81-82页

作者： Asad u khan Interdisciplinary Biotechnology unit AMU Aligarh 202002 India

Recently WHO has again declared Influenza pandemic due to the outbreak of H1N1 which has infected over 254,206 people in 80 countries,with 625 *** lab has started working on the proteome analysis of H1N1,2009 out brea... 详细信息

关键词： Influenza A Virus swine

Magnesium (II) Adsorption from Aqueous solutions on China Clay and the stability Constants for Complex Formation

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Pedosphere 1998年第2期8卷 169-174页

作者： s．BEGuM F．u．khan PakistanCouncilofscientificandIndustrialResearchLabs Peshawer（Pakistan） PakistanCouncilofscientifican

China clay was employed as an adsorbent for the removal of Mg 2+ from water at pH 7.0 within the temperature range of 303～328 K. The linearity of the plots indicated Langmuir type isotherms. The reaction was exothermic. A maximum removal of 35% was obtained at 0.50 mmol L -1 metal concentration and a pH of 7.0 at 303 K. The H + rel /Mg 2+ ads ratio changed from a fractional value to 2.5. strong chemical bondings took place between oxygen atom of the surface and Mg 2+ , resulting in a surface complex species. Temperature had a significant effect on H + rel , and the stability constants also increased with increasing temperature.

关键词： H + releasing Mg 2+ adsorption stability constants temperature

Varying Track Etch Rates along the Fission Fragments＇ Trajectories in CR-39 Detectors

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Chinese Physics Letters 2010年第5期27卷 76-79页

作者： N. All E. u. khan A. Waheed s. Karim F. khan A. Majeed DPAM PLEAS P.O. Nilore Islamabad Pakistan P.D PINSTECH P.O. Nilore Islamabad Pakistan International Islamic university Islamabad Pakistan Department of Physics CIIT Islamabad Pakistan

We determine the behavior of track etch rate VT along the tracks in CR-39 detectors exposed to fission fragments from ^252Cf source. CR-39 detectors are etched at 70℃ in different concentrations of Na2COa-mixed 6M NaOH solutions for different etching time intervals of 5-10min starting from 15 min up to 210min. Two values of track etch rate are determined along the fission fragment trajectories. The variation in VT is correlated with the energy loss rate of the fission fragment in the detector material.

关键词： track etch etch rate rate