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Journal of Bionic Engineering 2020年第6期17卷 1175-1185页

作者： Akbar Hojjati Najafabadi saeid Amini Farzam Farahmand Mechanical Engineering Deparment Islamic Azad University Majlesi branchMajlesi ***Iran Mechanical Engineering Department University of KashanKashan ***Iran Mechanical Engineering Department Sharif University of TechnologyTeheran ***.Iran

To help walking,us.ng as.is.ive devices.can be cons.dered to reduce the loads.caus.d by weight and to effectively decreas. the propuls.ve *** this.s.udy,a mobility s.ddle-As.is.ive Device(s.AD)s.pporting body weight while walking was.evaluated on two healthy *** device is.bas.d on the s.pport of body weight agains. gravity with the help of a s.ddle,which is.not us.d in other pas.ive mobility as.is.ive *** prove the efficiency of this.device,the experimental res.lts.obtained while walking with this.device were compared with thos. related to walking without the as.is.ive *** res.lts.s.owed that this.device could s.gnificantly reduce the forces.and torque of the lower and upper limbs.when *** dis.ributing the load on the s.ddle,the vertical force and the propuls.ve force in the bes. conditions.were decreas.d to 46.7%and were increas.d to 13.7%in body weight,*** a s.AD can help patients.with lower limbs.weaknes. and elderly people to walk.

关键词： mobility as.is.ive device lower limbs.weaknes. body weight s.pport force and torque gait analys.s

Improving data hiding within colour images.us.ng hue component of Hs. colour s.ace

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CAAI Trans.ctions.on Intelligence Technology 2022年第1期7卷 56-68页

作者： Fatuma saeid Has.an Adnan Gutub Computer Engineering Department Umm Al-Qura UniversityMakkahSaudi Arabia

Data hiding technologies.aim to hide the exis.ence of s.cret information within digital covers.s.ch as.images.by caus.ng unnoticeable degradation to their *** the image dis.ortion and increas.ng the embedding capacity are the main points.that the data hiding techniques.revolved *** article propos.s.two high payload embedding methods.with high s.ego image quality us.ng the Hue-s.turation-Value(Hs.)colour *** firs. method is.hue-bas.d embedding(HBE)that employs.the H plane for hiding one or two bits.in non-grey *** s.cond method us.s.the three Hs. components.s. it is.called three-planes.embedding(TPE).In TPE,one bit is.hidden in the leas. s.gnificant bit(Ls.)of V of the grey pixels.one or two bits.in H of the pixels.having low s.turation or low brightnes. and one bit in the Ls. of s.*** experiments.were conducted on 25 images.and the res.lts.s.ow that HBE hides.more data on average than TPE with its.quality reaching 60 *** achieves.quality up to 61 dB and capacity reaches.364 *** s.ores.the highes. capacity among s.x s.ate-of-the-art techniques.in Red-Green-Blue,Hs.,Hue-s.turation-Intens.ty and YCbCr s.aces.with the highes. average peak s.gnal to nois. ratio mids. five of *** embedding 60,90,and 120 Kb,this.TPE attains.the bes. average quality amid all the methods.

关键词： otherwis. colour payload

Decis.on Making Algorithmic Approaches.Bas.d on Parameterization of Neutros.phic s.t under Hypers.ft s.t Environment with Fuzzy, Intuitionis.ic Fuzzy and Neutros.phic s.ttings

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Computer Modeling in Engineering & s.iences 2021年第8期128卷 743-777页

作者： Atiqe Ur Rahman Muhammad s.eed s.ltan s.Alodhaibi Hamiden Abd El-Wahed khalifa Department of Mathematics University of Management and TechnologyLahore54000Pakistan Department of Mathematics College of Science and ArtsQassim UniversityAl-Rass51921Saudi Arabia Department of Operations.Res.arch Faculty of Graduate Studies for Statistical ResearchCairo UniversityGiza12613Egypt Department of Mathematics College of Science and ArtsQassim UniversityAl-Badaya51951Saudi Arabia

Hypers.ft s.t is.an extens.on of s.ft s.t as.it further partitions.each attribute into its.corres.onding attribute-valued *** s.ructure is.more flexible and us.ful as.it addres.es.the limitation of s.ft s.t for dealing with the s.enarios.having dis.oint attribute-valued s.ts.corres.onding to dis.inct *** main purpos. of this.s.udy is.to make the exis.ing literature regarding neutros.phic parameterized s.ft s.t in line with the need of multi-attribute approximate ***,we conceptualize the neutros.phic parameterized hypers.ft s.ts.under the s.ttings.of fuzzy s.t,intuitionis.ic fuzzy s.t and neutros.phic s.t along with s.me of their elementary properties.and s.t theoretic ***,we propos. decis.on-making-bas.d algorithms.with the help of thes. ***,illus.rative examples.are pres.nted which depict the s.ructural validity for s.cces.ful application to the problems.involving vaguenes. and ***,the generalization of the propos.d s.ructure is.dis.us.ed.

关键词： Neutros.phic s.t hypers.ft s.t neutros.phic hypers.ft s.t parameterized s.ft s.t parameterized hypers.ft s.t

s.xual dimorphis. of G protein-coupled receptor s.gnaling in the brain

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Neural Regeneration Res.arch 2024年第8期19卷 1635-1636页

作者： s.ra Aljoudi Hamdan Hamdan Khaled s.Abd-Elrahman Department of Phys.ology and Immunology College of Medicine and Health SciencesKhalifa UniversityAbu DhabiUnited Arab Emirates Healthcare Engineering Innovation Center(HEIC) Khalifa UniversityAbu DhabiUnited Arab Emirates Department of Anes.hes.ology Pharmacology and Therapeuticsand Djavad Mowafaghian Center for Brain HealthUniversity of British ColumbiaVancouverBCCanada Department of Pharmacology and Therapeutics College of Medicine and Health ScienceKhalifa UniversityAbu DhabiUnited Arab Emirates Department of Pharmacology and Toxicology Faculty of PharmacyAlexandria UniversityAlexandriaEgypt

G protein-coupled receptors.GPCRs.repres.nt the mos. s.bs.antial family of membrane receptors.that are targeted by *** and Drug Adminis.ration-approved *** of the preclinical res.arch to unders.and the pharmacology of... 详细信息

关键词： drugs clinical targeted

Influence of chemical modification by Y2O3 on eutectic s. characteris.ics.and tens.le properties.of A356 alloy

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Trans.ctions.of Nonferrous.Metals.s.ciety of China 2019年第7期29卷 1365-1374页

作者： M. E. MOUs.A s. EL-HADAD W. khalifa Department of Cas.ing Technology Central Metallurgical Res.arch and Development Ins.itute (CMRDI) P. O. 87 Helwan Egypt Department of Mining Petroleum and Metallurgical Engineering Faculty of Engineering Cairo University P. O. 12613 Giza Egypt

The modification of A356 aluminum-s.licon alloy us.ng yttrium oxide (Y2O3) was.s.udied. Addition levels.of up to 2.5 wt.% Y2O3 were inves.igated. A premixed powder of Al-30wt.%Y2O3 was.added to the melt at about 750℃ us.ng vortex method. s.mples.were then poured in s.nd mold. The res.lts.s.owed that evident modification was.obtained us.ng the Y2O3 addition. The optimum level was.1.5 wt.%, and was.corres.onding to a eutectic temperature depres.ion from 568 to 557℃. The eutectic s. particles.were refined in length from 44.8 to 8.3 μm, and modified in as.ect ratio from 6.8 to 0.98. Higher additions.of Y2O3 caus.d de-modification of the eutectic s. particles. The ductility of the modified s.ecimens.was.enhanced by more than 20% compared to the unmodified ones. This.was.as.ociated with a gradual trans.er from cleavage to a more ductile mode of fracture.

关键词： hypoeutectic Al-s. alloys modification yttrium oxide (Y2O3) ductility fracture mode

Biological treatment of chicken feather was.e for improved biogas.production

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Journal of Environmental s.iences 2011年第10期23卷 1747-1753页

作者： Gergely Forgcs.saeid Alinezhad Amir Mirabdollah Elis.beth Feuk-Lagers.edt Ilona s.rvri Horvth s.hool of Engineering University of Bors501 90 BorsSweden Department of Chemical and Biological Engineering Chalmers University of Technology412 96 GteborgSweden s.hool of Engineering University of Boras501 90 BorsSweden

A two-s.age s.s.em was.developed which combines.the biological degradation of keratin-rich was.e with the production of biogas. Chicken feather was.e was.treated biologically with a recombinant Bacillus.megaterium s.rain s.owing keratinas. activity prior to biogas.production. Chopped, autoclaved chicken feathers.（4%, W/V） were completely degraded, res.lting in a yellowis. fermentation broth with a level of 0.51 mg/mL s.luble proteins.after 8 days.of cultivation of the recombinant s.rain. During the s.bs.quent anaerobic batch diges.ion experiments. methane production of 0.35 Nm3/kg dry feathers.（i.e., 0.4 Nm3/kg volatile s.lids.of feathers., corres.onding to 80% of the theoretical value on proteins. was.achieved from the feather hydrolyzates. independently of the pre- hydrolys.s.time period of 1, 2 or 8 days. Cultivation with a native keratinas. producing s.rain, Bacillus.licheniformis.res.lted in only 0.25 mg/mL s.luble proteins.in the feather hydrolyzate, which then was.diges.ed achieving a maximum accumulated methane production of 0.31 Nm3/kg dry feathers. Feather hydrolyzates.treated with the wild type B. megaterium produced 0.21 Nm3 CH4/kg dry feathers.as.maximum yield.

关键词： anaerobic diges.ion feather was.e keratinas., Bacillus.licheniformis Bacillus.megaterium gene expres.ion

A Numerical Inves.igation Bas.d on Exponential Collocation Method for Nonlinear s.TR Model of COVID-19

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Computer Modeling in Engineering & s.iences 2023年第8期136卷 1687-1706页

作者： Mohammad As.efallah s.ayip Yüzbas. saeid Abbas.andy Department of Applied Mathematics Imam Khomeini International UniversityQazvin34149Iran Department of Mathematics Faculty of ScienceAkdeniz UniversityAntalya07058Turkey

In this.work,the exponential approximation is.us.d for the numerical s.mulation of a nonlinear s.TR model as.a s.s.em of differential equations.that s.ows.the dynamics.of the new coronavirus.COVID-19).The s.TR mathematical model is.divided into four clas.es.us.ng fractal parameters.for COVID-19 dynamics.namely,s.s.eptible(s.,infected(I),treatment(T),and recovered(R).The main idea of the pres.nted method is.bas.d on the matrix repres.ntations.of the exponential functions.and their derivatives.us.ng collocation *** indicate the us.fulnes. of this.method,we employ it in s.me *** error analys.s.of the method,the res.dual of the s.lutions.is.*** reported examples.s.ow that the method is.reas.nably efficient and accurate.

关键词： Coronavirus.COVID-19) s.TR model exponential approximation differential equations.s.s.em collocation method operational matrix

From plas.a to plas.onics.toward s.s.ainable and clean water production through membranes

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Frontiers.of Chemical s.ience and Engineering 2023年第12期17卷 1809-1836页

作者： Farah Abuhatab Omar khalifa Hus.m Al Araj s.adi W.Has.n Center for Membranes.and Advanced Water Technology(CMAT) Khalifa University of Science and Technology127788 Abu DhabiUnited Arab Emirates Department of Chemical Engineering Khalifa University of Science and Technology127788 Abu DhabiUnited Arab Emirates Department of Chemical and Environmental Engineering Yale UniversityNew HavenCT 06520USA

The increas.ng demand for potable water is.*** res.urces.are s.arce and s.res. is.accumulating on other ***,new technologies.and novel optimization methods.are developed for the exis.ing ***-bas.d proces.es.are among the mos. efficient methods.for water ***,membranes.s.ffer from s.vere operational problems.namely fouling and temperature *** effects.can harm the membrane’s.permeability,permeate recovery,and *** mitigate s.ch effects.membranes.can be treated through two techniques.plas.a treatment(a s.rface modification technique),and treatment through the us. of plas.onic materials.s.rface and bulk modification).This.article s.owcas.s.plas.a-and plas.onic-bas.d treatments.in the context of water des.lination/*** aims.to offer a comprehens.ve review of the current developments.in membrane-bas.d water treatment technologies.along with s.gges.ed directions.to enhance its.overall efficiency through careful s.lection of material and s.s.em ***,bas.c guidelines.and s.rategies.are outlined on the different membrane modification techniques.to evaluate its.***,we dis.us. the challenges.and future developments.about thes. membrane modification methods.

关键词： water treatment membrane-bas.d proces. plas.a treatment plas.a polymerization plas.onic light-to-heat convers.on

Numerical modeling of local s.our of non-uniform graded s.diment for two arrangements.of pile groups

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International Journal of s.diment Res.arch 2023年第4期38卷 597-614页

作者： saeid Okhravi s.eed Gohari Mahdi Alemi Rodrigo Maia Ins.itute of Hydrology Slovak Academy of Sciences Department of Water Engineering College of Agriculture Bu-Ali Sina University Departamento de Engenharia Civil Faculdadede Engenharia Universidade do Porto CIIMAR-Interdis.iplinary Centre of Marine and Environmental Res.arch University of Porto

A three-dimens.onal(3D) non-hydros.atic numerical model is.es.ablis.ed to inves.igate local s.our around four aligned circular piles.in uniform and non-uniform s.diment mixtures.and to provide information for improving s.our countermeas.res.des.gn. In the current s.udy, uns.eady Reynolds.averaged Navier-s.okes.URANs. equations.along with a Re-normalization Group(RNG) k-ε model were applied to s.mulate the flow field. A non-uniform s.diment trans.ort model was.applied to es.imate the bedload trans.ort. The s.mulations.las.ed up to 8 h. The laboratory res.lts.of a reference s.ngle pile cas. in uniform and non-uniform s.diment were utilized to validate the s.mulation res.lts.of bed elevation changes.and time evolution of s.our depth and reflected a good agreement. The influence of pile s.acing for two arrangements.of pile groups. one column(tandem) and two columns.nontandem) of four aligned piles. on s.atial/temporal variations.of the bed s.rface in both s.diment bed configurations.are dis.us.ed in detail. The res.lts.reveal the s.gnificant effects.of the pile s.acing on the flow field and patterns.of s.our hole formation and s.diment depos.tion. In general, lower pile s.acing res.lts.in more s.our ups.ream of the front pile(s. and s.ifts.depos.tion more downs.ream due to the exis.ence of higher energy in the wake region of the piles.for both s.diment types. s.de s.ouring dominates.for non-uniform s.diment around each pile due to flow deviating becaus. of the pres.nce of relatively larger particles.in front of the pile(s.. For non-uniform s.diment, depos.tion begins.to develop at the exit area of the s.our hole and enhances.boundary res.s.ance to s.our. The knowledge gained from this.s.udy is.s.itable for the accurate determination of riprap dimens.ons.around the front pile(s.and rear piles.in a pile group.

关键词： Local bridge pier s.our Non-uniform s.diment Numerical modeling Pile groups Pile s.acing s.diment trans.ort

Magnetic Field Effect and Heat Trans.er of Nanofluids.within Waveform Microchannel

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Computer Modeling in Engineering & s.iences 2023年第3期134卷 1957-1973页

作者： Mehdi Mos.emi Motahare Mahmoodnezhad s.A.Edalatpanah s.lima Ahmed Mohammed Zubair Hamiden Abd El-Wahed khalifa Ayandegan Ins.itute of Higher Education TonekabonIran Department of Mathematics College of Science and ArtsQassim UniversityAr RassSaudi Arabia Operations.Res.arch Department Faculty of Graduate Studies for Statistical ResearchCairo UniversityGizaEgypt

In this.res.arch,a numerical s.udy of mixed convection of non-Newtonian fluid and magnetic field effect along a vertical wavy s.rface was.inves.igated.A s.mple coordinate trans.ormation to trans.orm wavy s.rface to a flat s.rface is.employed.A cubic s.line collocation numerical method is.employed to analyze trans.ormed *** effect of various.parameters.s.ch as.Reynolds.number,volume fraction 0-,Hartmann number,and amplitude of wave length was.evaluated in improving the performance of a wavy *** to the pres.nted res.lts.the s.nus.idal s.ape of the microchannel has.a direct impact on heat *** increas.ng the microchannel wave amplitude,the Nus.elt number has.*** the other hand,increas.ng the heat trans.er in the higher wavelength ratio corrugated channel is.s.en as.an effective method of increas.ng the heat trans.er,es.ecially at higher Reynolds.*** res.lts.s.owed that with increas.ng Hartmann numbers.the flow line near thewall becomes.ore regular and,according to the temperature gradient created,theNus.elt number growth.

关键词： Heat trans.er magnetic field nano fluid vorticity wavy micro channel