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Dissipative flow features of Carreau nanofluid with thermal radiation inside plane wall channel:jeffery-Hamel analysis

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Propulsion and Power Research 2023年第2期12卷 253-272页

作者： Sohail Rehman Hashim Fuad A.mal-Yarimi Sultan Alqahtani Mohammed Awade Department Mechanical Engineering School of Material Sciences and EngineeringGeorgia Institute of TechnologyAtlantaGAUSA Department of Mathematics and Statistics University of HaripurHaripur 22620Pakistan Department of Computer Science King Khalid UniversityMuhayel AseerSaudi Arabia College of Engineering Mechanical Engineering DepartmentKing Khalid UniversityAbhaSaudi Arabia Department of Information Systems King Khalid UniversityMuhayel AseerSaudi Arabia

The current article communicates a numerical investigation on laminar flow of dissipative generalized Newtonian Carreau nanofluid flowing through vertical conduit with converging and diverging plane *** and concentration characteristics due to enthalpy change,activation energy,and non-linear thermal radiation have been examined in the presence of buoyancy *** channel walls for both temperature and volumetric fraction are assumed to be *** instability mechanism of nanofluids is reported using a two-phase nanofluid model,which works reasonably well for nanoparticle concentrations below a certain threshold.A jeffery-Hamel(j-H)flow model is developed by assuming an incompressible purely radial flow of Carreau nanofluids with heat and mass *** the suitable non-dimensional variables,the resulting nonlinear partial differential equations are turned into a system of ordinary differential *** modified governing equations are then numerically solved using the built-in boundary value problem solver bvp4c,on the template form of commercial software *** impacts of material,geometrical and thermophysical parameters governing the j-H problem are discussed and *** indicate that higher buoyance forces incline the velocity profiles in converging enclosure,while a slight reduction is perceived in opposing forces.A significant decrease of wall heat transmission is reflected for larger values of activation energy and radiation *** endorsing this communication,a comparison analysis is established with existing research and noticed a remarkable ***,the flow inside converging and diverging channels are deployed in nuclear reactors that use plate-type nuclear energies,high heat-flux condensed heat exchangers,high-performance micro-electronic cooling systems,jets,rockets nozzles,and jet propulsion inlet.

关键词： Nanofluids Buoyancy forces Converging/diverging channels Thermal radiation Activation energy Carreau fluid

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胃排空紊乱临床意义及其治疗

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中华消化杂志 1990年第3期10卷 168-169页

作者： mal.,j－R 任军美国明尼苏达州罗契斯特Mayo医院胃肠病科

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Analysis of sp Pillar Stability Experiment: Continuous thermo-mechanical model development and calibration

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journal of Rock Mechanics and Geotechnical Engineering 2013年第2期5卷 124-135页

作者： R. Blaheta P. Byczanski M. ermák R. Hrtus R. Kohut A. Kolcun j. malík S. Sysala Institute of Geonics AS CR Ostrava 708 00 Czech Republic VSB-Technical University of Ostrava Ostrava 708 33 Czech Republic

The paper describes an analysis of thermo-mechanical （TM） processes appearing during the Aspo Pillar Stability Experiment （APSE）. This analysis is based on finite elements with elasticity, plasticity and dam- age mechanics models of rock behaviour and some least squares calibration techniques. The main aim is to examine the capability of continuous mechanics models to predict brittle damage behaviour of gran- ite rocks. The performed simulations use an in-house finite element software GEM and self-developed experimental continuum damage MATLAB code. The main contributions are twofold. First, it is an inverse analysis, which is used for （1） verification of an initial stress measurement by back analysis of conver- gence measurement during construction of the access tunnel and （2） identification of heat transfer rock mass properties by an inverse method based on the known heat sources and temperature measurements. Second, three different hierarchically built models are used to estimate the pillar damage zones, i.e. elas- tic model with Drucker-Prager strength criterion, elasto-plastic model with the same yield limit and a combination of elasto-plasticity with continuum damage mechanics. The damage mechanics model is also used to simulate uniaxial and triaxial compressive strength tests on the ,Aspo granite.

关键词： In situ pillar stability experiment Continuous mechanics Damage of granite rocks Model calibration by back analysis Finite element method (FEM)

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不列颠哥伦比亚省以人口为基础的耐药结核病危险因素研究

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国际结核病与肺部疾病杂志 2006年第3期1卷 93-100页

作者： A. moniruzzaman R. K. Elwood M. Schulzer j. M. FitzGerald 张宗德（译）屠德华（校）张立兴（审） Department of Health Care and Epidemiology University of British Columbia Vancouver Division of TB Control British Columbia Center for Disease Control Vancouver Department of Statistics University of British Columbia Vancouver Center for Clinical Epidemiology and Evaluation Vancouver British Columbia Canada 不详

背景:加拿大不列颠哥伦比亚的省级结核病(TB)工作。目的:调查不列颠哥伦比亚省抗结核药物耐药的相关危险因素,并确定不同耐药类别危险因素的特征是否有所不同。设计:应用省级结核病服务的人群资料,所有在1990-2001年间结核分枝杆菌培养... 详细信息

背景:加拿大不列颠哥伦比亚的省级结核病(TB)工作。目的:调查不列颠哥伦比亚省抗结核药物耐药的相关危险因素,并确定不同耐药类别危险因素的特征是否有所不同。设计:应用省级结核病服务的人群资料,所有在1990-2001年间结核分枝杆菌培养阳性的病例均被包括在本研究中。应用Logistic回归分析评估耐药的危险因素。结果:在3041个合格结核病例中,295例(10％)耐药。耐药性的重要危险因素为青年、国外出生、少数民族、TB复发和初次诊断的地点。国外出生的研究对象(OR=3．18,95％CI:2．26-4．49)出现耐药的危险性是加拿大出生研究对象的3倍多。不同种族人群中,华裔(OR=2．32,95％CI:1．51-3．57)、东南亚裔(OR=2．92, 95％CI:1．88-4．52)和其他亚裔(OR=4．40,95％CI: 2．77-7．01)出现耐药的危险性是高加索裔的2-4倍。复发病例(OR=2．69,95％CI:1．91-3．77)出现耐药的危险性是新病例的3倍。结论:本文对大人群基础队列中的耐药结核病危险因素进行了分析和定量评价,并确定了发达国家的耐药结核病高危病人群体。

关键词：耐药结核病危险因素人群研究多耐药TB 耐多药TB

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AFM Height Measurements of Molecular Layers of a Carbocyanine Dye

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World journal of Nano Science and Engineering 2011年第3期1卷 67-72页

作者： Valery V. Prokhorov Sergey I. Pozin Dmitry A. Lypenko Olga M. Perelygina Eugene I. mal’tsev Anatoly V. Vannikov Frumkin Institute of Electrochemistry of the Russian Academy of Sciences

Atomic force microscopy (AFM) was used for the morphological characterization and precise height meas-urements of two-dimensional molecular layers of carbocyanine dye 3,3’-di(r-sulfopropyl)-4,4’,5,5’-dibenzo-9-ethylthiacarbocyanine betaine pyridinium salt. The AFM measurements reveal three morphological types of molecular aggregates: leaves, stripes and spots. The leaves are stripes have same monolayer height ~1.4 nm and different crystal shapes: the leaves are monoloyers with the lens shape and the stripes are bilay-ers with the shape of extended rectangles. The monolayer height ~1.4 nm was interpreted as indicating the symmetrical packing arrangement of dye molecules. In the symmetrical monolayer, the sulfopropyl groups of all-trans monomer units are located on both monolayer sides whereas the adjacent stacked dye molecules have a lateral slippage providing the j-aggregate optical properties. The lower height of spots ~1 nm was explained by the model of an asymmetric monolayer with sulfopropyl groups of all-trans monomers occupy-ing the same position with respect to the monolayer plane. The packing arrangement of all-trans monomers in the asymmetric monolayer corresponds to H-aggregate. The alternative models of the packing arrange-ment in monolayers with mono-cis1 monomer configuration are discussed.

关键词： Atomic Force Microscopy j-Aggregates H-Aggregates Monolayers

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Effect of papaya seed extract on microenvironment of cauda epididymis

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Asian journal of Andrology 2001年第2期3卷 143-146页

作者： R.j.Verma N.j.Chinoy Department of Zoology University School of Sciences Gujarat University Ahmedabad 380009 IndiaDepartment of Zoology University School of Sciences Gujarat University Ahmedabad 380009 India

Aim: To evaluate the effect of aqueous Carica papaya seed extract on microenvironment of cauda ***: Adult male albino rats were intramuscularly administered with 0 (control) or 0.5 mg papaya seed ex-tract/kg body weight for 7 days. Cauda epididymal tubular content was collected by micropuncture technique; epididy-mal luminal fluid and sperm pellets were separately analyzed. Results: The results revealed that the extract treat-ment caused significant reduction, as compared with control, in total protein and sialic acid contents in both epididymalfluid and sperm pellet. As compared with control, significantly lowered acid phosphatase activity was recorded in spermpellet but was higher in epididymal fluid after the treatment. The extract treatment also caused significant reduction inlevel of inorganic phosphorus in the epididymal fluid. Conclusion: It is concluded that the aqueous papaya seed ex-tract alters cauda epididymal microenvironment.

关键词： Carica papaya microenvironment epididymis spermatozoa protein sialic acid

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APATITE FISSION TRACK ANALYSIS AS A PALEOTEMPERATURE INDICATOR FOR HYDROCARBON EXPLORATION

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石油与天然气地质 1990年第2期 156-177页

作者： P.F.GREEN,I.R.DUDDY,A.j.W.GLEADOW,j.F.LOVERING Department of Geology University of Melbourne Australia Department of Geology University of Melbourne Australia Department of Geology University of Melbourne Australia Department of Geology University of Melbourne Australia

Apatite Fission-Track Analysis(AFTA)is emerging as an important new tool for ther-mal history analysis in sedimentary *** temperatures between approximately 20℃ and150℃ over times of the order of 1 to 100 million years,fission tracks in apatite are *** is due to a rearrangement of the damage present in unetched tracks,with theresult that less of a track is etchable than in fresh,newly created *** of this,thelength of an etched fission track reduces with increasing annealing,and in turn,the track den-sity(and hence the fission-track age) is also *** selected boreholes in the OtwayBasin,southeastern Australia,apatites from the Otway Group show reduction in confinedfission-track length and apparent fission-track age,in a fashion characteristic of a simple ther-mal history in which samples are at or near their maximum temperatures at the present *** lengths show a steady decrease from lengths of approximately 15μm in outcrop ornear surface samples,to zero at abo

关键词： Apatite fission track Paleotemperture indicator Hydrocarbon exploration

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Micro-synchrophasor based special protection scheme for distribution system automation in a smart city

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Protection and Control of Modern Power Systems 2020年第1期5卷 97-110页

作者： Deepa S.Kumar Savier j.S Biju S.S Dept of Electrical Engineering College of EngineeringTrivandrumKeralaIndia 400/220kV Substation Powergrid Corporation of India Ltd.TrivandrumKeralaIndia Power System Operations Kerala State Electricity Board Ltd.KeralaIndia

Introduction:Aspects of power system protection which contributes to mal-operations and blackouts can be improved by supervision of system behavior and response based analysis rather than condition-based or event-based analysis using wide area measurements based on synchrophasor *** paper explores the application of micro-Phasor Measurement Unit for time synchronized real-time distribution network monitoring and agile decision support schemes for system prognosis and *** description:The scheme is proposed as part of a project on“Power System Voltage Stability Analysis using synchrophasors in Distribution System of Kerala Grid”at Kerala State Electricity Board *** actual grid occurrence during the severe tropical cyclone Ockhi,is considered as the base case which motivated the *** and evaluation:A voltage stability index(VSI)based special protection scheme(SPS)for radial distribution network at a proposed smart city is presented in the present *** proposed special protection scheme on actual implementation can use data from proposed local micro-Phasor Measurement *** PMU is proposed to be placed at one of the key nodes of the distribution system network in the ***:The VSI is derived using local phasor values and is used to initiate a Special Protection Scheme for N-1 contingency at the key node,so as to ensure availability of the most essential feeder which provides supply to a hospital campus housing several health institutes of prime *** voltage stability index derived is tested and SPS is validated using real-time grid data.

关键词： Micro-phasor measurement unit Power system protection Voltage stability Power system stability Power distribution Smart grids

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Combinatorial therapies for spinal cord injury: strategies to induce regeneration

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Neural Regeneration Research 2019年第1期14卷 69-71页

作者： Eduardo D.Gomes Nuno A.Silva António j. Salgado Life and Health Sciences Research Institute (ICVS) School of Medicine University of Minho Campus de Gualtar ICVS/3B’s–PT Government Associate Laboratory

Spinal cord injury(SCI)is a condition without treatment,mainly characterized by the loss of motor and sensory function below the level of *** is accompanied by several complications such as cardiac and respiratory compromise,and often patients present psychological ailments associated with the drastic alteration of their normal *** pathophysiology derives from a massive damage to the spinal cord tissue,which is propagated

关键词：损害绳索新生治疗感觉功能生活方式星形细胞并发症

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Alcohol-induced Wnt signaling inhibition during bone fracture healing is normalized by intermittent parathyroid hormone treatment

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Animal Models and Experimental Medicine 2020年第2期3卷 200-207页

作者： Esha M.Kapania Taylor jReif Aaron Tsumura jonathan M。Eby john j.Callaci Internal Medicine-Pediatric Resident Rush University Medical CenterChicagoILUSA Limb Lengthening and Complex Reconstruction Fellowship Hospital for Special SurgeryNew YorkNYUSA Department of Orthopaedic Surgery and Rehabilitation Loyola University Medical CenterMaywoodILUSA Alcohol Research Program(ARP) Loyola University Chicago Stritch School of MedicineMaywoodILUSA

Nearly half of orthopaedic trauma patients are intoxicated at the time of injury, and excess alcohol consumption increases the risk for fracture nonunion. Previous studies show alcohol disrupts fracture associated Wnt signaling required for normal bone fracture repair. Intermittent parathyroid hormone(PTH) promotes bone growth through canonical Wnt signaling, however, no studies have investigated the effect of PTH on alcohol-inhibited bone fracture repair. male C57 BL/6 mice received two-3 day alcohol binges separated by 4 days before receiving a mid-shaft tibia fracture. Postoperatively, mice received PTH daily until euthanasia. Wnt/β-catenin signaling was analyzed at 9 days post-fracture. As previously observed, acute alcohol exposure resulted in a >2-fold decrease in total and the active form of β-catenin and a 2-fold increase in inactive β-catenin within the fracture callus. Intermittent PTH abrogated the effect of alcohol on β-catenin within the fracture callus. Upstream of β-catenin, alcohol-treated animals had a 2-fold decrease in total LRP6, the Wnt co-receptor, which was restored with PTH treatment. Alcohol nor PTH had any significant effect on GSK-3β. These data show that intermittent PTH following a tibia fracture restores normal expression of Wnt signaling proteins within the fracture callus of alcohol-treated mice.

关键词： ethanol fracture callus parathyroid hormone Wnt signaling pathway

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