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j.urnal of Physical Science and Application 2016年第1期6卷 212-220页

作者： hadi j. m. a1-agealy Departm.nt of Physics College of Education for pure Science Baghdad University Baghdad Iraq

Applying the Protective m.-Co-La_(2)O_(3)Coating on Crofer 22 APU Ferritic Stainless Steel Used as Solid Oxide Fuel Cell Interconnects

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Acta m.tallurgica Sinica(English Letters) 2024年第5期37卷 872-888页

作者： Farhad m.hsenifar hadi Ebrahim.far Ahm.d Irannej.d Departm.nt of m.terials Engineering and m.tallurgy Faculty of EngineeringShahid Bahonar University of KermanKermanIran m.chanical Engineering Departm.nt Faculty of EngineeringHigher Education Complex of Bam76615-314BamIran Departm.nt of m.terials Engineering Faculty of Mechanical and Materials EngineeringGraduate University of Advanced TechnologyKerman ***Iran

This research studies the effect of m.-Co-La_(2)O_(3) coating synthesized by the electrodeposition m.thod on the oxidation resistance and electrical conductivity of the Crofer 22 APU stainless steel interconnect plates in solid oxide fuel *** test sam.les were characterized by a field em.ssion scanning electron m.croscope(FESEm.equipped with energy dispersive spectroscopy(EDS),X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).The oxidation kinetics of the coated and uncoated sam.les were studied by tracking their weight changes over tim. at 800°C,showing that the oxidation m.chanism.for all sam.les follows the parabolic *** oxidation rate constant(k_(p))values of the coated sam.le com.ared with that of the uncoated one indicated a reduction in the oxidation rate of the steel substrate in the presence of the m.-Co-La_(2)O_(3) *** exam.nation of the cross-section of different sam.les after the isotherm.l oxidation for 500 h at 800°C exhibited that applying the com.osite coating leads to a decrease in the thickness of the chrom.a layer form.d on the steel ***,under these conditions,the area-specific resistance(ASR)of the coated sam.le(13.11 m.cm.(2))is significantly lower than that of the uncoated one(41.45 m.cm.(2)).

关键词： Area specific resistance Oxidation Fuel cell Com.osite coating

A novel approach to study generalized coupled cubic Schrödinger-Korteweg-de Vries equations

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j.urnal of Ocean Engineering and Science 2024年第1期9卷 13-24页

作者： Lanre Akinyem. P.Veeresha m.T.Darvishi hadi Rezazadeh m.hm.t Senol Udoh Akpan Departm.nt of m.them.tics Lafayette CollegeEastonPAUSA Departm.nt of m.them.tics Christ Deemed to be UniversityBengaluru 560029India Departm.nt of m.them.tics Razi UniversityKermanshah 67149Iran Faculty of Engineering Technology Amol University of Special Modern TechnologiesAmolIran Departm.nt of m.them.tics Nev¸s ehir HacıBekta¸s Veli UniversityNev¸s ehirTurkey Drexel University Department of MathematicsPhiladelphiaPAUSA

The Kortewegde Vries(KdV)equation represents the propagation of long waves in dispersive m.dia,whereas the cubic nonlinear Schrödinger(CNLS)equation depicts the dynam.cs of narrow-bandwidth wave packets consisting of short dispersive waves.A m.del that couples these two equations seem. in-triguing for sim.lating the interaction of long and short waves,which is im.ortant in m.ny dom.ins of applied sciences and engineering,and such a system.has been investigated in recent *** work uses a m.dified Sardar sub-equation procedure to secure the soliton-type solutions of the generalized cubic nonlinear Schrödinger-Korteweg-de Vries system.of *** various selections of arbitrary param.ters in these solutions,the dynam.c properties of som. acquired solutions are represented graph-ically and *** particular,the dynam.cs of the bright solitons,dark solitons,m.xed bright-dark solitons,W-shaped solitons,m.shaped solitons,periodic waves,and other soliton-type *** re-sults dem.nstrated that the proposed technique is highly efficient and effective for the aforem.ntioned problem.,as well as other nonlinear problem. that m.y arise in the fields of m.them.tical physics and engineering.

关键词： CNLS equation m.diﬁed Sardar sub-equation m.thod KdV equation Solitons Long and short waves

Does the Redshift Distribution of Swift Long GRBs Trace the Star-Form.tion Rate?

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International j.urnal of Astronom. and Astrophysics 2024年第1期14卷 20-44页

作者： Ali m. Hasan Walid j. Azzam Departm.nt of Physics College of Science University of Bahrain Sakhir Bahrain

Gam.a-ray bursts (GRBs) are extrem.ly powerful explosions that have been traditionally classified into two categories: long bursts (LGRBs) with an observed duration T90 > 2 s, and short bursts (SGRBs) with an observed duration T90 T90 is the tim. interval during which 90% of the fluence is detected. LGRBs are believed to em.nate from.the core-collapse of m.ssive stars, while SGRBs are believed to result from.the m.rging of two com.act obj.cts, like two neutron stars. Because LGRBs are produced by the violent death of m.ssive stars, we expect that their redshift distribution should trace the star-form.tion rate (SFR). The purpose of our study is to investigate the extent to which the redshift distribution of LGRBs follows and reflects the SFR. We use a sam.le of 370 LGRBs taken from.the Swift catalog, and we investigate different m.dels for the LGRB redshift distribution. We also carry out m.nte Carlo sim.lations to check the consistency of our results. Our results indicate that the SFR can describe the LGRB redshift distribution well for high redshift bursts, but it needs an evolution term.to fit the distribution well at low redshift.

关键词： Gam.a-Ray Bursts Redshift Distribution Star-Form.tion Rate

Sustained adenosine release:Revealing its im.act on osteogenic signalling pathways of hum.n m.senchym.l strom.l cells

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Engineered Regeneration

Engineered Regeneration 2024年第2期5卷 255-268页

作者： hadi Haj.ali j.ne m.Laren Cristina Gonzalez-García Salah Abdelrazig Dong-Hyun Kim.m.tthew j.Dalby m.nuel Salm.rón-Sánchez Felicity R.A.j.Rose School of Pharm.cy Nottingham Biodiscovery InstituteUniversity of NottinghamNottinghamUK Healthcare Technologies Institute School of Chemical EngineeringUniversity of BirminghamBirminghamUK Centre for the Cellular m.croenvironm.nt University of GlasgowGlasgowUK Centre for Analytical Bioscience Advanced Materials&Healthcare Technologies DivisionSchool of PharmacyUniversity of NottinghamNottinghamUK m.rine m.crobiom.cs Program in BiologyDivision of Science and MathematicsNew York University Abu Dhabi(NYUAD)P.O.Box 129188Abu DhabiUnited Arab Emirates

Non-healing fractures,a global health concern arising from.traum.,osteoporosis,and tum.urs,can lead to severe ***,integral to cellular energy m.tabolism.gains prom.nence in bone regeneration via adeno-sine A2 B receptor *** study introduces a controlled-release system.for localized adenosine delivery,fostering hum.n m.senchym.l strom.l cell(hm.C)differentiation into functional bone *** study investi-gates how the ratio of lactic acid to glycolic acid in m.croparticles can influence adenosine release and explores the downstream.effects on gene expression and m.tabolic profiles of osteogenic differentiation in hm.Cs cultured in growth and osteoinductive *** into adenosine-m.dulated signalling pathways during m.C differenti-ation,with osteogenic factors,provide a com.rehensive understanding of the pathways *** gene expression and m.tabolic profiles unravels adenosine’s regulatory m.chanism. in m.C *** adenosine release from.m.croparticles induces m.neralization,synergizing with osteogenic m.dia supplem.nts,showcasing the potential of adenosine for treating critical bone defects and m.tabolic *** study high-lights the efficacy of a polym.ric m.croparticle-based delivery system.offering novel strategies for bone *** adenosine’s roles and associated signalling pathways advances our com.rehension of m.lecular m.ch-anism. steering bone regeneration,propelling innovative biom.terial,com.ined with m.tabolites,approaches for clinical use.

关键词： Adenosine release Osteogenic signalling pathways Hum.n m.senchym.l strom.l cells Bone regeneration

Drought events influence nutrient canopy exchanges and green leaf partitioning during senescence in a deciduous forest

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Forest Ecosystem. 2024年第1期11卷 110-119页

作者： j.Touche C.Calvaruso P.De Donato m.-P.Turpault INRAE BEFF-54000NancyFrance Um. 7359 GeoRessourcesFaculte des Sciences-Campus des Aiguillettes54506Vandoeuvre Les NancyFrance EcoSustain Environmental Engineering OfficeResearch and DevelopmentKanfen57330France

The increase in the frequency and intensity of drought events expected in the com.ng decades in Western Europe m.y disturb forest biogeochem.cal cycles and create nutrient deficiencies in *** possible origin of nutrient deficiency is the disturbance of the partitioning of the green leaf pool during the leaf senescence period between resorption,foliar leaching and senesced ***,the effects of drought events on this partitioning and the consequences for the m.intenance of tree nutrition are poorly *** experim.nt in a beech forest in m.use(France)was conducted to assess the effect of drought events on nutrient canopy exchanges and on the partitioning of the green leaf pool during the leaf senescence *** aim.was to identify potential nutritional consequences of droughts for *** nutrient dynam.cs,including resorption,chem.stry of green and senesced leaves,foliar absorption and leaching in m.ture beech stands from.2012 to 2019 allowed us to com.are the nutrient exchanges for three nondry and three dry years(i.e.,with an intense drought event during the growing season).During dry years,we observed a decrease by alm.st a third of the potassium.K)partitioning to resorption(*** efficiency),thus reducing the K reserve in trees for the next growing *** result suggests that with the increased drought frequency and intensity expected for the com.ng decades,there will be a risk of potassium.deficiency in trees,as already observed in a rainfall exclusion experim.nt on the sam. study *** foliar leaching and higher parititioning to the senesced leaves for K and phosphorus(P)were also *** addition,a slight increase in nitrogen(N)resorption efficiency occurred during dry years which is m.re likely to im.rove tree *** calcium.Ca)negative resorption decreased,with no apparent consequence in our study *** results show that nutrient exchanges in the canopy and the partitioning of the green leaf

关键词： Natural drought Beech forest Canopy Resorption Foliar leaching Senesced leaves Nutrition

Recent progress in two-dim.nsional m.tallenes and their potential application as electrocatalyst

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j.urnal of Energy Chem.stry 2024年第7期94卷 577-598页

作者： Um.r Shahzad m.hsin Saeed m.ham.ad Fazle Rabbee hadi m.m.rwani j.han Y.Al-Hum.idi m.ham.ad Altaf Raed H.Althom.li Kwang-Hyun Baek m..Rabiul Awual m.ham.ed m.Rahm.n Departm.nt of Chem.stry Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Departm.nt of Biotechnology Yeungnam UniversityGyeongsanSouth Korea Center of Excellence for Advanced m.terials Research(CEAm.) King Abdulaziz UniversityJeddah 21589Saudi Arabia Departm.nt of Chem.stry College of SciencePrincess Nourah Bint Abdulrahman UniversityP.O.BOX 84428Riyadh 11671Saudi Arabia Departm.nt of Chem.stry Center of Excellence for Innovation in Chemistry(PERCH-CIC)Center of Excellence in Materials Science and TechnologyFaculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Departm.nt of Chem.stry College of Art and SciencePrince Sattam Bin Abdulaziz UniversityWadi Al-Dawasir 11991Saudi Arabia Western Australian School of m.nes:m.nerals Energy and Chemical EngineeringCurtin UniversityGPO Box U 1987PerthWA 6845Australia

In this article,we looked at m.tallenes,a novel class of two-dim.nsional(2D)m.tals that are attracting interest in the energy and catalysis *** is one area where their exceptional physicochem.cal and electrical characteristics m.ght be *** are unique because they include several m.tal atom. that are not in a coordinated *** m.kes them.m.re active and im.roves their atom.c uti-lization,which in turn increases their catalytic *** article delves into the potential of two-dim.nsional m.tals as electrocatalysts for carbon dioxide reduction,fuel oxidation,oxygen evolution,and oxygen reduction reactions in the context of sustainable energy *** to the exception-ally high surface-to-volum. ratio,large surface area as well as their optim.zed atom.c use efficiency,2D m.terials defined by atom.c layers are crucial for surface-related sustainable energy *** to its exceptional properties,such as high conductivity and the ability to enhance the exposure of active m.tal sites,2D m.tallenes have recently attracted a lot of interest for use in catalysis,electronics,and energy-related *** their highly m.bility,adj.stable surface states,and electrical struc-tures that can be fine-tuned,2D m.tallenes are prom.sing nanostructure m.terials for use in energy con-version with the sustainable applications.

关键词： m.tallenes Electrocatalysts Electrochem.cal processes Atom.cally thin structure

Frequency-dependent viscoelasticity effects on the wave attenuation perform.nce of m.lti-layered periodic foundations

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Applied m.them.tics and m.chanics(English Edition) 2024年第3期45卷 407-424页

作者： m.SAFI m.VAKILIFARD m.j.m.Hm.ODI Faculty of Civil Water&Environmental EngineeringShahid Beheshti UniversityTehran ***Iran Faculty of m.chanical and Energy Engineering Shahid Beheshti UniversityTehran ***Iran

In this paper,layered periodic foundations(LPFs)are num.rically exam.ned for their responses to longitudinal and transverse m.des in the tim. and frequency *** different unit-cells,i.e.,2-layer,4-layer,and 6-layer unit-cells,com.rising concrete/rubber,concrete/rubber/steel/rubber,and concrete/rubber/steel/rubber/lead/rubber m.terials,respectively,are taken into ***,the viscoelasticity behavior of the rubber is m.deled with two factors,i.e.,a frequency-independent(FI)loss factor and a linear frequency-dependent(FD)loss *** the extraction of the com.lex dispersion curves and the identification of the band gaps(BGs),the sim.lations of wave transm.ssion in the tim. and frequency dom.ins are perform.d using the COm.OL *** param.tric studies evaluate the effects of the rubber viscoelasticity m.dels on the dispersion curves and the wave transm.ssion for the longitudinal and transverse *** results show that considering the rubber viscoelasticity enhances the wave attenuation ***,the transverse-m.de dam.ing is m.re sensitive to the viscoelasticity m.del than its longitudinal *** 6-layer unit-cell LPF exhibits the lowest BG,ranging from.4.8 Hz to 6.5 Hz.

关键词： layered m.tam.terial periodic foundation com.lex dispersion curve wave transm.ssion diagram

Concentration of Copper, Zinc, Lead, Cadm.um. and Nickel in the Incinerator Bottom.Ash in Five County Hospitals in Kenya

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j.urnal of Geoscience and Environm.nt Protection 2024年第6期12卷 90-114页

作者： m.riithi j. Githinj. Paul m. Nj.gu Zipporah Nganga m.ham.d Karam. Institute of Tropical m.dicine and Infectious Diseases (ITROm.D) Jomo Kenyatta University of Agriculture and Technology (JKUAT) Nairobi Kenya Institute of Energy and Environm.ntal Technology Jomo Kenyatta University of Agriculture and Technology (JKUAT) Nairobi Kenya Academ.c Research and Student Affairs South Eastern Kenya University Kitui Kenya School of Public Health Amref International University Nairobi Kenya

Healthcare wastes contain potentially harm.ul m.croorganism., inorganic and organic com.ounds that pose a risk to hum.n health and the environm.nt. Incineration is a com.on m.thod em.loyed in healthcare waste m.nagem.nt to reduce volum., quantity, toxicity as well as elim.nation of m.croorganism.. However, som. of the substances rem.in unchanged during incineration and becom. part of bottom.ash, such as heavy m.tals and persistent organic pollutants. m.nitoring of pollution by heavy m.tals is im.ortant since their concentrations in the environm.nt affect public health. The goal of this study was to determ.ne the levels of Copper (Cu), Zinc (Zn) Lead (Pb), Cadm.um.(Cd) and Nickel (Ni) in the incinerator bottom.ash in five selected County hospitals in Kenya. Bottom.ash sam.les were collected over a period of six m.nths. Sam.le preparation and treatm.nt were done using standard m.thods. Analysis of the heavy m.tals were done using atom.c absorption spectrophotom.ter, m.del AA-6200. One-Way Analysis of Variance (ANOVA) was perform.d to determ.ne whether there were significant differences on the m.an levels of Cu, Zn, Pd, Cd and Ni in incinerator bottom.ash from.the five sam.ling locations. A post-hoc Tukey’s Test (HSD) was used to determ.ne if there were significant differences between and within sam.les. The significant differences were accepted at p ≤ 0.05. To standardize the results, overall m.an of each m.tal from.each site was calculated. The m.tal m.an concentration values were com.ared with existing perm.ssible levels set by the WHO. The concentrations (m./kg) were in the range of 102.27 - 192.53 for Cu, Zn (131.68 - 2840.85), Pb (41.06 - 303.96), Cd (1.92 - 20.49) whereas Ni was (13.83 - 38.27) with a m.an of 150.76 ± 77.88 for Copper, 131.66 ± 1598.95 for Zinc, 234.60 ± 262.76 for Lead, 12.256 ± 10.86 for Cadm.um.and 29.45 ± 18.24 for Nickel across the five sam.ling locations. There were significant differences between levels determ.ned by one-way ANOVA of Zn (

关键词： Healthcare Waste Disposal Public Health Environm.nt Incineration Heavy m.tals Bottom.Ash

Utilization of Logistical Regression to the m.dified Sine-Gordon m.del in the m.T Experim.nt

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Open j.urnal of m.delling and Sim.lation 2024年第2期12卷 43-58页

作者： Nizar j. Alkhateeb Ham.ed K. Ebraheem.Em.n m. Al-Otaibi Departm.nt of Electronic Engineering Technology College of Technological Studies (CTS) The Public Authority of Applied Education and Training (PAAET) Kuwait City Kuwait

In this paper, a logistical regression statistical analysis (LR) is presented for a set of variables used in experim.ntal m.asurem.nts in reversed field pinch (RFP) m.chines, com.only known as “slinky m.de” (Sm., observed to travel around the torus in m.dison Sym.etric Torus (m.T). The LR analysis is used to utilize the m.dified Sine-Gordon dynam.c equation m.del to predict with high confidence whether the slinky m.de will lock or not lock when com.ared to the experim.ntally m.asured m.tion of the slinky m.de. It is observed that under certain conditions, the slinky m.de “locks” at or near the intersection of poloidal and/or toroidal gaps in m.T. However, locked m.de cease to travel around the torus;while unlocked m.de keeps traveling without a change in the energy, m.king it hard to determ.ne an exact set of conditions to predict locking/unlocking behaviour. The significant key m.del param.ters determ.ned by LR analysis are shown to im.rove the Sine-Gordon m.del’s ability to determ.ne the locking/unlocking of m.gnetohydrodyam.c (m.D) m.des. The LR analysis of m.asured variables provides high confidence in anticipating locking versus unlocking of slinky m.de proven by relational com.arisons between sim.lations and the experim.ntally m.asured m.tion of the slinky m.de in m.T.

关键词： m.dison Sym.etric Torus (m.T) m.gnetohydrodyam.c (m.D) Sine-Gordon Toroidal Dynam.c m.delling Reversed Field Pinch (RFP) Logistical Regression