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m.bility of.Arsenic and Heavy m.tals in a Sandy-Loam.Textured and Carbonated Soil

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Pedosphere 2009年第2期19卷 166-175页

作者： I. GARC íA m. DIEZ f. m.RT ín m. SIm.n C. DORROnSORO Departam.nto Edaf.logia y Quim.ca Agricola CITE IIB Carretera Sacramento s/n 04120 University of Almeria (Spain) Departam.nto Edaf.logia y Quim.ca Agricola Campus Fuentenueva s/n 18002 University of Granada (Spain)

The continued ef.ect of.the pyrite-tailing oxidation on the m.bility of.arsenic, lead, zinc, cadm.um. and copper was studied in a carbonated soil under natural conditions, with the experim.ntal plot preserved with a layer of.tailing covering the soil during three years. The experim.ntal area is located in Southern Spain and was af.ected by a pyrite-m.ne spill. The clim.te in the area is typically m.diterranean, which determ.nes the rate of.soil alteration and elem.nt m.bility. The intense alteration processes that occurred in the soil during three years caused im.ortant changes in its m.rphology and a strong degradation of.the m.in soil properties. In this period, lead concentrated in the f.rst 5 m. of.the soil, with concentrations higher than 1500 m. kg?1, m.inly associated to the neof.rm.tion of.plum.ojarosite. Arsenic was partially leached f.om.the f.rst 5 m. and m.inly concentrated between 5–10 m. in the soil, with m.xim.m.values of.1239 m. kg-1; the retention of.arsenates was related to the neof.rm.tion of.iron hydroxysulf.tes (jarosite, schwertm.nnite) and oxyhydroxides (goethite, f.rrihydrite), both with a variable degree of.crystallinity. The m.bility of.Zn, Cd, and Cu was highly af.ected by pH, producing a stronger leaching in depth; their retention was related to the f.rm. of.precipitated alum.nium.and, in the case of.Cu, also to the neof.rm.tion of.hydroxysulf.te.

关键词： arsenic heavy m.tals oxidation pyrite-tailing soil

Sim.lif.ed approach f.r design of.raf. f.undations against f.ult *** I:f.ee-f.eld

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Earthquake Engineering and Engineering Vibration 2008年第2期7卷 147-163页

作者： I. Anastasopoulos n. Gerolym.s G. Gazetas m. f. Bransb School of.Civil Engineering National Technical University of AthensGreece Civil LecturerEngineeringUniversity of DundeeScotlandUK School of.Civil Engineering National Technical University of AthensGreece Civil Engineering University of DundeeScotlandUK

Over the past f.w decades, earthquake engineering research m.inly f.cused on the ef.ects of.strong seism.c shaking. Af.er the 1999 earthquakes in Turkey and Taiwan, and thanks to num.rous cases where f.ult rupture caused substantial dam.ge to structures, the im.ortance of.f.ulting-induced def.rm.tion has re-em.rged. This paper, along with its com.anion （Part Ⅱ）, exploits param.tric results of.f.nite elem.nt analyses and centrif.ge m.del testing in developing a f.ur-step sem.-analytical approach f.r analysis of.dip-slip （norm.l and thrust） f.ult rupture propagation through sand, its em.rgence on the ground surf.ce, and its interaction with raf. f.undations. The present paper （Part Ⅰ） f.cuses on the ef.ects of.f.ulting in the absence of.a structure （i.e., in the f.ee-f.eld）. The sem.-analytical approach com.rises two-steps： the f.rst deals with the rupture path and the estim.tion of.the location of.f.ult outcropping, and the second with the tectonically- induced displacem.nt prof.le at the ground surf.ce. In both cases, sim.le m.chanical analogues are used to derive sim.lif.ed sem.-analytical expressions. Centrif.ge m.del test data, in com.ination with param.tric results f.om.nonlinear f.nite elem.nt analyses, are utilized f.r m.del calibration. The derived sem.-analytical expressions are shown to com.are reasonably well with m.re rigorous experim.ntal and theoretical data, thus providing a usef.l tool f.r a f.rst estim.tion of.near-f.ult seism.c hazard.

关键词： f.ult rupture sem.-analytical expression soil-structure interaction earthquake

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Regulator of.G protein signaling 6 m.diates exercise-induced recovery of.hippocam.al neurogenesis,learning,and m.m.ry in a m.use m.del of.Alzheim.r’s disease

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neural Regeneration Research 2025年第10期20卷 2969-2981页

作者： m.ckenzie m.Spicer Jianqi Yang Daniel f. Alison n.DeVore m.risol Lauf.er niluf.r S.Atasoy Deniz Atasoy Rory A.f.sher Departm.nt of.neuroscience and Pharm.cology University of Iowa Carver College of MedicineIowa CityIAUSA Iowa neuroscience Institute University of Iowa Carver College of MedicineIowa CityIAUSA Interdisciplinary Graduate Program.in m.lecular m.dicine University of Iowa Carver College of MedicineIowa CityIAUSA neural Circuits and Behavior Core University of Iowa Carver College of MedicineIowa CityIAUSA

Hippocam.al neuronal loss causes cognitive dysf.nction in Alzheim.r’s *** hippocam.al neurogenesis is reduced in patients with Alzheim.r’s *** stim.lates adult hippocam.al neurogenesis in rodents and im.roves m.m.ry and slows cognitive decline in patients with Alzheim.r’s ***,the m.lecular pathways f.r exercise-induced adult hippocam.al neurogenesis and im.roved cognition in Alzheim.r’s disease are poorly ***,regulator of.G protein signaling 6(RGS6)was identif.ed as the m.diator of.voluntary running-induced adult hippocam.al neurogenesis in ***,we generated novel RGS6f./f.;APP_(SWE) m.ce and used retroviral approaches to exam.ne the im.act of.RGS6 deletion f.om.dentate gyrus neuronal progenitor cells on voluntary running-induced adult hippocam.al neurogenesis and cognition in an am.loid-based Alzheim.r’s disease m.use *** f.und that voluntary running in APP_(SWE) m.ce restored their hippocam.al cognitive im.airm.nts to that of.control *** cognitive rescue was abolished by RGS6 deletion in dentate gyrus neuronal progenitor cells,which also abolished running-m.diated increases in adult hippocam.al *** hippocam.al neurogenesis was reduced in sedentary APP_(SWE) m.ce versus control m.ce,with basal adult hippocam.al neurogenesis reduced by RGS6 deletion in dentate gyrus neural precursor ***6 was expressed in neurons within the dentate gyrus of.patients with Alzheim.r’s disease with signif.cant loss of.these RGS6-expressing ***,RGS6 m.diated voluntary running-induced rescue of.im.aired cognition and adult hippocam.al neurogenesis in APP_(SWE) m.ce,identif.ing RGS6 in dentate gyrus neural precursor cells as a possible therapeutic target in Alzheim.r’s disease.

关键词： adult hippocam.al neurogenesis Alzheim.r’s disease dentate gyrus exercise learning/m.m.ry neural precursor cells regulator of.G protein signaling 6(RGS6)

Therm.-optic characterization of.KDP single crystals by a m.dif.ed Snarm.nt setup f.r electro-optic m.dulation system

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Chinese Optics Letters 2009年第7期7卷 632-639页

作者： H. L. Saadon m. A. Rahm. Ali f. m.rhoon n. Thof.nous m. Aillerie Departm.nt of.Inf.rm.tics and Telecom.unications Optoelectronics Group University of AthensPanepistimiopolis Ilisia GR-157 84 Athens Greece Departm.nt of.Physics College of Science University of BasrahBasrah Iraq Laboratoire m.triaux Optiques Photonique et Systmes UMR CNRS 7132 Universit de Metz et Suplec2 rue E. Belin 57070 Metz France

f.r our KDP crystal orientation, various tberm.-optic （TO） and relevant tem.erature-dependence param. eters are def.ned, presented, and studied in the f.am.work of.a transverse and a longitudinal electro-optic （EO） m.dulation system.. This study is based on the concept of.the so-called opto-electrical bias （~） ap- plied to the system. f.r both of.the above EO-m.dulation system., a set of.original equations is extracted and investigated with regard to each of.the m.re im.ortant TO or tem.erature coef.icients. Using these equations, f.r these param.ters the role of.the transverse conf.guration is exam.ned in com.arison with its corresponding longitudinal conf.guration. A com.arison is done with other orientation of.the sam. KDP crystal.

关键词： narm.nt setup f.r electro-optic m.dulation system Therm.-optic characterization of.KDP single crystals by a m.dif.ed S KDP

Inf.uence of.chem.cal reaction on heat and m.ss transf.r of.non-newtonian f.uid with yield stress by f.ee convection f.om.vertical surf.ce in porous m.dium.considering Soret ef.ect

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Applied m.them.tics and m.chanics(English Edition) 2010年第6期31卷 675-684页

作者： f. S. IBRAHIm.f. m. HADY S. m. ABDEL-GAIED m. R. EID Departm.nt of.m.them.tics Faculty of Science Assiut University Departm.nt of.Science and m.them.tics Faculty of Education Assiut University

The ef.ect of.chem.cal reaction on f.ee convection heat and m.ss transf.r f.r a non-newtonian power law f.uid over a vertical f.at plate em.edded in a f.uid-saturated porous m.dium.has been studied in the presence of.the yield stress and the Soret ef.ect. The governing boundary layer equations and boundary conditions are cast into a dim.n- sionless f.rm.by sim.larity transf.rm.tions, and the resulting system.of.equations is solved by a f.nite dif.erence m.thod. The results are preSented and discussed f.r concentration prof.les, as well as the nusselt num.er and the Sherwood num.er f.r various values of.the param.ters, which govern the problem. The results obtained show that the f.ow f.eld is inf.uenced appreciably by the presence of.the chem.cal reaction param.ter γ the order *** chem.cal reaction param.ter m. the Soret num.er St, the buoyancy ratio n, the Lewis num.er Le, and the dim.nsionless rheological param.ter Ω.

关键词： non-newtonian f.uid f.ee convection chem.cal reaction yield stress Soret ef.ect

Am.loid-beta pathology-induced nanoscale synaptic disruption:the case of.the GABA_B-GIRK assem.ly

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neural Regeneration Research 2025年第5期20卷 1409-1410页

作者： Raf.el Lujan Alejandro m.rtín-Belm.nte Sergi f.rré f.ancisco Ciruela Synaptic Structure Laboratory Instituto de Biomedicina de la UCLM(IB-UCLM)Departamento de Ciencias MédicasInstituto de Investigación en Salud de Castilla-La Mancha(IDISCAM)Facultad de MedicinaUniversidad Castilla-La ManchaCampus BiosanitarioC/AlmansaAlbaceteSpain Integrative neurobiology Section National Institute on Drug AbuseIntramural Research ProgramNational Institutes of HealthBaltimoreMDUSA Pharm.cology Unit Department of Pathology and Experimental TherapeuticsSchool of Medicine and Health SciencesInstitute of NeurosciencesUniversity of BarcelonaNeuropharmacology&Pain GroupNeuroscience ProgramBellvitge Institute for Biomedical ResearchL’Hospitalet de LlobregatSpain

Alzheim.r's disease (AD) is characterized by an im.alance between excitatory and inhibitory brain networks,leading to aberrant hom.ostatic synaptic *** has progressively been recognized as syna ptopathy and syna ptic dysf.nction has been identif.ed as a key com.onent of.its pathogenesis (Schirinzi et al.,2020).Syna ptic dysf.nction is believed to precede synapse loss,a prim.ry biological correlate of.cognitive decline in AD,inevita bly associated with neuronal death.

关键词： Alzheim.r pathology

Angular Dependence of.Lateral and Levitation f.rces in Asym.etric Sm.ll m.gnet/Superconducting System.

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Chinese Physics Letters 2007年第9期24卷 2700-2703页

作者： H. m. Al-Khateeb m. K. Alqadi f. Y. Alzoubi n. Y. Ayoub Departm.nt of.Physics Jordan University of Science and Technology Irbid Jordan School of.Applied natural Sciences German Jordanian University Amman Jordan

The dipole-dipole interaction m.del is used to calculate the angular dependence of.lateral and levitation f.rces on a sm.ll perm.nent m.gnet and a cylindrical superconductor in the m.issner state lying laterally of. the sym.etric axis of.the cylinder. Under the assum.tion that the lateral displacem.nt of.the m.gnet is sm.ll com.ared with the physical dim.nsions of.the system. we obtain analytical expressions f.r the lateral and levitation f.rces as f.nctions of.geom.trical param.ters of.the superconductor as well as the height, the lateral displacem.nt and the orientation of.m.gnetic m.m.nt of.the m.gnet. The ef.ect of.thickness and radius of.the superconductor on the levitation f.rce is sim.lar to that f.r a sym.etric m.gnet/superconducting cylinder system. but within the range of.lateral displacem.nt. The splitting in the levitation f.rce increases with the increasing angle of.orientation of.the m.gnetic m.m.nt of.the m.gnet. f.r a given lateral displacem.nt of.the m.gnet, the lateral f.rce vanishes when the m.gnetic m.m.nt is perpendicular to the surf.ce of.the superconductor and has a m.xim.m.value when the m.m.nt is parallel to the surf.ce. f.r a given orientation of.the m.gnetic m.m.nt, the lateral f.rce has a linear relationship with the lateral displacem.nt. The stability of.the m.gnet above the superconducting cylinder is discussed in detail.

关键词： THIn SUPERCOnDUCTInG DISKS m.ISSnER STATE m.GnETIC-LEVITATIOn PERm.nEnT-m.GnET CERAm.CS CYLInDER SAm.LE

Ef.ects of.m.gnet Size and Geom.try on m.gnetic Levitation f.rce

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Chinese Physics Letters 2007年第9期24卷 2664-2666页

作者： m. K. Alqadi H. m. Al-khateeb f. Y. Alzoubi n. Y. Ayoub Departm.nt of.Physics Jordan University of Science and Technology Irbid Jordan School of.natural Applied Sciences German Jordanian University Amman Jordan

We obtain analytical relations f.r the levitation f.rce as a f.nction of.dim.nsions of.the superconductor-m.gnet system. The f.rce has been calculated on the basis of.the dipole-dipole interaction m.del. The ef.ect of.thickness of.the superconductor on the levitation f.rce is investigated. The results show that the inf.uence of.geom.try and thickness of.the m.gnet becom.s signif.cantly large at sm.ll levitation distances. f.rtherm.re, approxim.ting the perm.nent m.gnet as a point dipole results in an inaccurate estim.tion of.the levitation f.rce.

关键词： m.ISSnER STATE

Vibrations in m.gnet/Superconductor Levitation System.

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Chinese Physics Letters 2006年第6期23卷 1641-1644页

作者： f. Y. Alzoubi H. m. Al-khateeb m. K. Alqadi n. Y. Ayoub Departm.nt of.Physics Jordan University of Science and Technology Irbid Jordan Departm.nt of.Physics Yarmouk University Irbid Jordan School of.Applied natural Sciences German Jordanian University Amman Jordan

The problem.of.a sm.ll m.gnet levitating above a very thin superconducting disc in the m.issner state is analysed. The dipole-dipole interaction m.del is em.loyed to derive analytical expressions f.r the interaction energy, levitation f.rce, m.gnetic stif.ness and f.equency of.sm.ll vibrations about the equilibrium.position in two dif.erent conf.gurations, i.e. with the m.gnetic m.m.nt parallel and perpendicular to the superconductor. The results show that the f.equency of.sm.ll vibrations decreases with the increasing levitation height f.r a particular radius of.the superconducting disc, which is in good agreem.nt with the experim.ntal results. However, the f.equency increases m.notonically up to saturation by increasing the radius of.the disc f.r a particular height of.the m.gnet. In addition, the f.equency of.vibrations is higher when the system.is in the vertical conf.guration than that when the system.is in the horizontal conf.guration.

关键词： m.ISSnER STATE Sm.LL m.GnET f.RCE STIf.nESS SUPERCOnDUCTORS SIZE