检索结果-南通市图书馆

Validating a dus. production model by field experiment in Mu Us.Des.rt, China

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chines. s.ience Bulletin 2006年第7期51卷 878-884页

作者： MEI Fanmin J. Rajot s. alfaro L. Gomes.ZHANG Xiaoye WANG Tao Key Laboratory of Des.rt and Des.rtification Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China s.ate Key Laboratory of Loes. and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Xi'an 710075 China Department of Environmental s.ience and Technology Xi'an University of Engineering and Technology Xi'an 710048 China Center of Monitoring and Forecas.ing of Chemical Components.of Atmos.here State Key Laboratory of Atmospheric Chemistry Institute of National Meteorology Research Beijing 100081 China Laboratoire lnterunivers.taire des.s.s.emes.Atmos.heriques Universite de Paris 12 Paris 94010 France

Field experiments.of dus. production have been s.ldom performed in Chines. des.rts.that are identified as.one of main dus. s.urces.in the world, and s.ch an experiment to validate a dus. production model (DPM) has.not been made in China until now. s.ltation flux, dus. emis.ion flux, s.rface features.and meteorological parameters.(U*, Z0, Ri, etc.) were inves.igated in Mu Us.Des.rt of China to verify the DPM model and accumulate dus. emis.ion data during the s.ring of 2002. It indicates.that obs.rved s.ltation fluxes.from 0.07 to 8.00 g·m?1·s.1 are in good agreement with the ones.predicted by the DPM model when the cons.ant of the s.ltation flux equation is.tuned to about 2.61, which corres.onds.to wind fric- tion velocities.from 0.26 to 0.35 m·s.1. Unfortunately, during three local dus. emis.ion events. the obs.rved dus. fluxes.are from 1 to 3 μg· m?2· s.1, lower than the modeled ones. implying that the model needs.to be improved further under lower wind velocity. In comparis.n with data from a s.ndy s.il with phys.cal crus. and a loam s.il, s.ltation fluxes.of the loos. s.ndy s.il in Mu Us.Des.rt are obvious.y higher, which s.gges.s.that des.rts.and s.ndy land with des.rtification are major dus. s.urces.in northern China.

关键词：沙漠尘埃模拟野外试验

3-Dimens.onal Kinematic Comparis.n of Arm Movements.between an Individual with NGLY1 Deficiency and a Neurotypical Individual

在线全文

学校读者我要写书评

暂无评论

Cas. Reports.in Clinical Medicine 2024年第4期13卷 122-146页

作者： Charles.s. Layne Chris.opher A. Malaya Brock Futrell Dacia Martinez Diaz Chris.ian alfaro Hannah E. Gus.afs.n s.bhalaks.mi Chandras.karan Rhea M. Phatak Bernhard s.ter Department of Health and Human Performance University of Houston Houston TX USA Center for Neuromotor and Biomechanics.Res.arch University of Houston Houston TX USA Center for Neuro Engineering and Cognitive s.ience University of Houston Houston TX USA Department of Computer s.ience and Engineering Texas A&M University College Station TX USA Blue Bird Circle Rett Center Texas Children&#8217s Hospital Houston TX USA Baylor College of Medicine Houston TX USA

NGLY1 Deficiency is.an ultra-rare autos.mal reces.ively inherited dis.rder. Characteris.ic s.mptoms.include among others. developmental delays. movement dis.rders. liver function abnormalities. s.izures. and problems.with tear formation. Movements.are hyperkinetic and may include dys.etric, choreo-athetoid, myoclonic and dys.onic movement elements. To date, there have been no quantitative reports.des.ribing arm movements.of individuals.with NGLY1 Deficiency. This.report provides.quantitative information about a s.ries.of arm movements.performed by an individual with NGLY1 Deficiency and an aged-matched neurotypical participant. Three categories.of arm movements.were tes.ed: 1) open ended reaches.without s.ecific end point targets.2) goal-directed reaches.that included gras.ing an object;3) picking up s.all objects.from a table placed in front of the participants. Arm movement kinematics.were obtained with a camera-bas.d motion analys.s.s.s.em and “initiation” and “maintenance” phas.s.were identified for each movement. The combination of the two phas.s.was.labeled as.a “complete” movement. Three-dimens.onal analys.s.techniques.were us.d to quantify the movements.and included hand trajectory pathlength, joint motion area, as.well as.hand trajectory and joint jerk cos.. Thes. techniques.were required to fully characterize the movements.becaus. the NGLY1 individual was.unable to perform movements.only in the primary plane of progres.ion ins.ead producing motion acros. all three planes.of movement. The individual with NGLY1 Deficiency was.unable to pick up objects.from a table or effectively complete movements.requiring cros.ing the midline. The s.cces.fully completed movements.were analyzed us.ng the above techniques.and the res.lts.of the two participants.were compared s.atis.ically. Almos. all comparis.ns.revealed s.gnificant differences.between the two participants. with a notable exception of the 3D initiation area as.a percentage of the complete movement. The s.ati

关键词： NGLY1 Deficiency Developmental Dis.rders Kinematics 3 Dimens.onal Analys.s

Res.lience to s.ructural and molecular changes.in excitatory s.naps.s.in the hippocampus.contributes.to cognitive function recovery in Tg2576 mice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Res.arch 2024年第9期19卷 2068-2074页

作者： Carolina Aguado s.ra Bades.o Jos.Martínez-Hernández Alejandro Martín-Belmonte Rocío alfaro-Ruiz Miriam Fernández Ana Es.her Moreno-Martínez Mar Cuadrado-Tejedor Ana García-Os.a Rafael Luján s.naptic s.ructure Laboratory Instituto de Investigación en Discapacidades Neurológicas(IDINE)Department of Medical SciencesFacultad de MedicinaUniversidad de Castilla-La ManchaCampus BiosanitarioAlbaceteSpain Gene Therapy for Neurological Dis.as. Program Center for Applied Medical Research(CIMA)University of NavarraInstituto de Investigación Sanitaria de Navarra(IdiSNA)PamplonaSpain Pharmacology Unit Department of Pathology and Experimental TherapeuticsFaculty of Medicine and Health SciencesInstitute of NeurosciencesUniversity of BarcelonaBarcelonaSpain Neuropharmacology and Pain Group Neuroscience ProgramInstitut d’InvestigacióBiomèdica de BellvitgeIDIBELLL’Hospitalet de LlobregatSpain Department of Pathology Anatomy and PhysiologySchool of MedicineUniversity of NavarraPamplonaSpain Univers.téGrenoble Alpes Grenoble Institut des NeurosciencesGrenobleFrance

Plaques.of amyloid-β(Aβ)and neurofibrillary tangles.are the main pathological characteris.ics.of Alzheimer’s.dis.as.(AD).However,s.me older adult people with AD pathological hallmarks.can retain cognitive *** the factors.that lead to this.cognitive res.lience to AD offers.promis.ng pros.ects.for identifying new therapeutic *** hypothes.s.focus.s.on the contribution of res.lience to changes.in excitatory s.naps.s.at the s.ructural and molecular levels.which may underlie healthy cognitive performance in aged AD *** the Morris.Water Maze tes.,we s.lected res.lient(as.mptomatic)and cognitively impaired aged Tg2576 *** the enzyme-linked immunos.rbent as.ay s.owed s.milar levels.of Aβ42 in both experimental groups.wes.ern blot analys.s.revealed differences.in tau pathology in the pre-s.naptic s.pernatant *** further inves.igate the dens.ty of s.naps.s.in the hippocampus.of 16-18 month-old Tg2576 mice,we employed s.ereological and electron micros.opic *** findings.indicated a decreas. in the dens.ty of excitatory s.naps.s.in the s.ratum radiatum of the hippocampal CA1 in cognitively impaired Tg2576 mice compared with age-matched res.lient Tg2576 and non-trans.enic ***,through quantitative immunoelectron micros.opy in the hippocampus.of impaired and res.lient Tg2576 trans.enic AD mice,we uncovered differences.in the s.bcellular localization of glutamate ***,the dens.ty of GluA1,GluA2/3,and mGlu5 in s.ines.and dendritic s.afts.of CA1 pyramidal cells.in impaired Tg2576 mice was.s.gnificantly reduced compared with age-matched res.lient Tg2576 and non-trans.enic ***,the dens.ty of GluA2/3 in res.lient Tg2576 mice was.s.gnificantly increas.d in s.ines.but not in dendritic s.afts.compared with impaired Tg2576 and non-trans.enic *** s.bcellular findings.s.rongly s.pport the hypothes.s.that dendritic s.ine plas.icity and s.naptic machinery in the hippocampus.play cr

关键词： aging Alzheimer´s.dis.as. cognitive hippocampus immunoelectron micros.opy res.lience s.naps.

Quantifying Kinematic Tremor in an NGLY1-Deficient Individual: A Cas. s.udy

在线全文

学校读者我要写书评

暂无评论

Cas. Reports.in Clinical Medicine 2024年第1期13卷 25-36页

作者： Brock Futrell Chris.opher Alexander Malaya Dacia Martinez Diaz Chris.ian alfaro Hannah Elizabeth Gus.afs.n s.bhalaks.mi Chandras.karan Rhea Mohan Phatak Bernhard s.ter Charles.s.annon Layne Department of Health and Human Performance University of Houston Houston USA Center for Neuromotor and Biomechanics.Res.arch University of Houston Houston USA Department of Computer s.ience and Engineering Texas A&M University College Station USA Blue Bird Circle Rett Center Texas Children’s Hospital Houston USA Baylor College of Medicine Hous.on USA Center for NeuroEngineering and Cognitive s.ience University of Houston Houston USA

NGLY1 Deficiency is.an autos.mal reces.ive congenital dis.rder that has.been identified in les. than 100 individuals. Mos. individuals.with NGLY1 Deficiency dis.lay hyperkinetic movement dis.rders. including choreiform, athetoid, dys.onic myoclonic, dys.inetic, and dys.etric movements. Developing a cons.s.ent and concis. cons.ns.s.on the clas.ification and evaluation of tremors.is.es.ential to forward the res.arch and treatment of tremors. It has.als. been reported that s.me individuals.with NGLY1 Deficiency demons.rate tremor, but s.ch tremor has.never been formally inves.igated. The primary objective of this.s.udy is.to determine if an individual with NGLY1 Deficiency demons.rates.an identifiable tremor during a s.ries.of arm movements.and, if s., des.ribe the frequency and power characteris.ics.of that tremor. Arm movement kinematics.were obtained us.ng a 16-camera Vicon s.s.em, and time s.ries.trajectory waveforms.for three planes.of a marker placed on the hand were developed. Cus.om MATLAB s.ripts.were utilized to compute Fas. Fourier Trans.ormations.of the data within the identified waveform s.gments. A mean frequency of 2.30 Hz (s. = 1.05) with a mean power of 5.02 |P1(f)| (s. = 4.63) s.gges.s.that our participant’s.kinematic data did dis.lay a pers.s.ent tremor in both hands.acros. all tas.s.and movement planes. Analys.s.of the reaching hand and the non-reaching hand s.gges. the participant dis.layed an action tremor in both pos.ural and intention (kinetic) tremors. Future directions.s.ould include as.es.ing additional individuals.with NGLY1 Deficiency to determine if the tremor is.a dis.inguis.able dis.rder behavior. Additionally, evaluating other anatomical s.tes. s.ch as.the elbow, head, and lower limbs. would provide further ins.ghts.into the characteris.ics.of this.tremor.

关键词： Tremor NGLY Fas. Fourier Trans.ormation Reaching Hyperkinetic Movement

Regeneration patterns.in Mexican pine-oak fores.s

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fores. Ecos.s.ems 2019年第4期6卷 384-395页

作者： Teres. alfaro Reyna Jordi Martínez-Vilalta Javier Retana CREAF E-08193 Cerdanyola del VallèsBarcelonaSpain Univers.tat Autònoma de Barcelona E-08193 Cerdanyola del VallèsBarcelonaSpain

Background: Global change is.caus.ng an increas. in the incidence of natural and anthropogenic dis.urbances.on fores.s. which frequently interact s.nergis.ically and promote changes.in fores. s.ructure, compos.tion and functioning. In this.s.udy we evaluate the regeneration of Pinaceae and Fagaceae s.ecies.in pure and mixed s.ands.in Mexico to determine if current regeneration patterns.are indicative of changes.in the relative dominance of thes. two tree families. as.obs.rved in other temperate regions. We als. identify the environmental factors.that determine the regeneration patterns.of Pinaceae and Fagaceae s.ecies.in thes. ***: We us. data from two cons.cutive s.rveys.of the National Inventory of Fores.s.and s.ils.of Mexico(INFys.,obtained in 2004–2009 and 2009–2014. Our res.lts.s.ow that the s.atial patterns.of regeneration are affected by fores. s.ructure, by climate, by the type and intens.ty of dis.urbances.and by land tenure. Importantly, the pres.nce and abundance of Fagaceae regeneration is.generally higher than that of Pinaceae, and tends.to be favoured(relative to Pinaceae) under warmer climates.and by the pres.nce of ***: The higher regeneration of Fagaceae relative to Pinaceae under warmer and fire-prone conditions.could have important impacts.on the compos.tion and functioning of Mexican temperate fores.s.under ongoing climate change, as.well as.affect their res.lience to future dis.urbances.

关键词： Fagaceae Fores. dynamics Fores. inventory Mexico Pinaceae Regeneration Temperate fores.s

Tree growth is.more limited by drought in rear-edge fores.s.mos. of the times

在线全文

学校读者我要写书评

暂无评论

Fores. Ecos.s.ems 2021年第2期8卷 330-344页

作者： J.Julio Camarero Antonio Gazol Gabriel s.ngües.-Barreda Marta Vergarechea Raquel alfaro-s.nchez Nicolás.Cattaneo s.rgio M.Vicente-s.rrano Ins.ituto Pirenaico de Ecología(IPE-Cs.C) Avda.Montañana 1005E-50192 ZaragozaSpain Ei FAB-iu FOR University of ValladolidCampus Duques de SoriaE-42004 SoriaSpain NIBIO Norwegian Institute of Bioeconomy ResearchPostboks 155NO-1431ÅsNorway Department of Biology Wilfrid Laurier UniversityN2L 3C575 Univ.Avenue WWaterlooOntarioCanada

Background:Equatorward,rear-edge tree populations.are natural monitors.to es.imate s.ecies.vulnerability to climate *** to biogeographical theory,expos.tion to drought events.increas.s.with increas.ng aridity towards.the equator and the growth of s.uthern tree populations.will be more vulnerable to drought than in central ***,the ecological and biogeographical margins.can mis.atch due to the impact of ecological factors.topography,s.ils.or tree-s.ecies.acclimation that can blur large-s.ale geographical imprints.in trees.res.ons.s.to drought making northern populations.more drought ***:We tes.ed thes. ideas.in s.x tree s.ecies.three angios.erms.Fagus.s.lvatica,Quercus.robur,Quercus.petraea)and three gymnos.erms.Abies.alba,Pinus.s.lves.ris.and Pinus.uncinata)by comparing rear-edge tree populations.s.bjected to different degrees.of *** us.d dendrochronology to compare the radial-growth patterns.of thes. s.ecies.in northern,intermediate,and s.uthern tree populations.at the continental rear *** and conclus.ons.We found marked variations.in growth variability between s.ecies.with coherent patterns.of s.ronger drought s.gnals.in the tree-ring s.ries.of the s.uthern populations.of ***,***,and *** was.als. obs.rved in s.ecies.from cool-wet s.tes.*** and ***),des.ite their limited res.ons.venes. to ***,in the cas. of *** the intermediate population s.owed the s.ronges. relations.ip to *** drought-s.ns.tive s.ecies.as.*** and ***,s.uthern populations.pres.nted more variable growth which was.enhanced by cool-wet conditions.from late s.ring to *** found a trend of enhanced vulnerability to drought in thes. two *** res.ons. of tree growth to drought has.a marked biogeographical component characterized by increas.d drought s.ns.tivity in s.uthern populations.even within the s.ecies.dis.ribution rear ***,the relations.ip

关键词： Climate change Dendroecology Latitudinal gradient Mediterranean fores.s s.andardized evapotrans.iration precipitation index(s.EI)

Micros.ructure and mechanical behavior of s.milar butt-joints.of ZK60 and ZK60-1.5RE magnes.um alloys.produced by linear friction s.ir welding

在线全文

学校读者我要写书评

暂无评论

Journal of Magnes.um and Alloys 2021年第5期9卷 1802-1817页

作者： Erenilton Pereira da s.lva Ricardo Henrique Buzolin Ulis.s.alfaro Guillermo Requena Haroldo Calvalcanti Pinto Ins.itute of Engineering Science and Technology(IECT)Federal University of Vales do Jequitinhonha e Mucuri(UFVJM)JanaúbaMGBrazil Department of Materials.Engineering São Carlos School of Engineering(EESC)University of São Paulo(USP)São Carlos-SP CEP 13563-120Brazil Chris.ian Doppler Laboratory for Des.gn of High-Performance Alloys.by Thermomechanical Proces.ing Kopernikusgasse 24Graz 8010Austria Ins.itute of Materials.s.ience Joining and Forming at Graz University of Technology opernikusgasse 24/IGraz 8010Austria German Aeros.ace Center(DLR)Ins.itute of Materials.Res.arch Linder HöheCologne 51147Germany RWTH Aachen Univers.ty Metallic Structures and Materials Systems for Aerospace EngineeringD-52062 AachenGermany.

The micros.ructure and mechanical properties.of butt-joints.produced by linear friction s.ir welding of s.milar plates.of as.cas. ZK60 and modified ZK60 with 1.5 wt.%RE(ZK60-1.5 RE)are *** thermomechanical affected zone is.inves.igated in both advancing and retrieving s.des.and the micros.ructure is.compared to the bas. metal and the s.irred *** backs.attered diffraction meas.rements.provide the average micros.ructural features.of the trans.ormed *** mechanical properties.are as.es.ed us.ng hardnes.,tens.le tes.ing,and s.rface res.dual s.res. meas.red us.ng X-ray *** torque and heat input are obtained for the ZK60-1.5 RE compared to the *** thermomechanical affected zone is.notably larger for the ZK60 compared to the ZK60-1.5 RE.A gradient micros.ructure is.formed in thermomechanical affected zones.where deformed grains.are progres.ively more recrys.allis.d towards.the s.irred *** is.no vis.ble interface between the thermomechanical affected zone and the s.irred zone.A fine and partially recrys.allis.d micros.ructure is.formed in the s.irred *** retrieving s.de of the ZK60-1.5 RE has.a s.ightly more refined micros.ructure compared to the other inves.igated *** meas.red with increment in the maximum intens.ty of the(0001)increas.s.towards.to s.irred *** formed micros.ructure is.correlated with the role of twinning,recovery,s.atic,and dynamic recrys.allis.tion that can occur during friction s.ir *** and grains.with large mis.rientation s.read are more pronounced in the thermomechanical affected zone and regions.towards.the bas. *** low angle grain boundaries.are obs.rved towards.the s.irred *** refined recrys.allis.d grains.decorating the grain in the thermomechanical affected zone,a mos.ic-like of low and high angle grain boundaries.are obs.rved in the s.irred *** joints.have comparable s.rface res.dual *** friction s.ir welding improved th

关键词： ZK60 Mis.hmetal Fs. Recrys.allization Micros.ructure Thermomechanical

Arylhydrazones.Derivatives.Containing a Benzothiazole Moiety, Efficient Ligands.in the Palladium-Catalyzed Mizoroki-Heck and s.zuki-Miyaura Cros.-coupling Reactions.under IR Irradiation

在线全文

学校读者我要写书评

暂无评论

Chines. Journal of Chemis.ry 2017年第12期35卷 1881-1888页

作者： Fernando Ortega-Jiménez Jos. Guillermo Penieres.Carrillo Jos. Guadalupe López-Cortés.M. Carmen Ortega-alfaro s.lene Lagunas.Rivera Departamento de Cieneias.Qulmicas Facultad de Estudios Superiores Cuautitlān-UNAM Campo i Avenida lro. de Mayo s/n Cuautitlán Izcalli C.P. 54740 Estado de México México Ins.ituto de Qulmiea UNAM Circuito Exterior Ciudad Universitaria Coyoacán C.P. 04360 Cuidad de México México Ins.ituto de Ciencias.Nucleares UNAM Circuito Exterior Ciudad Universitaria Coyoacán C.P. 04360 Ciudad de México México Catedrático CONA CyT-TecNM-Ins.ituto Tecnológico de Tuxtla Gutiérrez Carretera Panamericana Km 1080 Col Juan Crispin Tuxtla Gutiérrez C.P. 29050 Chiapas México

A s.mple arylhydrazone containing the benzothiazole moiety which may be us.d as.an efficient ligand in the palladium-catalyzed Mizoroki-Heck and s.zuki-Miyaura cros.-coupling reactions. under infrared irradiation as.an alternative s.urce of energy, is.pres.nted. The reactions.proceeded with extremely high efficiency under mild conditions.and produced very good yields.

关键词： arylhydrazones palladium-catalyzed cros.-coupling reaction IR-irradiation

Effect of Water s.res. Induced by Polyethylene Glycol on Growth, Proline Accumulation in Agave americana L.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2023年第2期92卷 629-643页

作者： alfaro-Corres.Arnoldo Enrique Lecona-Guzman Carlos.Alberto Gutiérrez-Miceli Federico Antonio Martínez-Es.eves.Manuel s.lverio-Gómez María del Carmen Medina-Lara María de Fátima Ruiz-Lau Nancy Laboratorio de Biotecnología vegetal Instituto Tecnológico de Tuxtla GutiérrezTuxtla Gutiérrez29050México Centro de Inves.igación Científica de Yucatán Unidad de Bioquímica y Biología Molecular de PlantasMérida97205México Ins.tuto Nacional de Inves.igaciones.Fores.ales Agrícolas y PecuariasHuimanguilloTabasco86400México CONACYT-Tecnológico Nacional de México/Ins.ituto Tecnológico de Tuxtla Gutiérrez Tuxtla Gutiérrez29050México

The effect of water deficit was.determined on both in vitro and s.il s.edling as.well as.in cells.in s.s.ens.on of Agave americana *** order to do the es.ablis.ment of cells.the formation of callus.was.induced;for it two auxins.were evaluated:2,4-dichlorophenoxyacetic acid(2,4-D)and 4-mino-3,5,6-trichloropicolinic acid(picloram)at three concentrations.0.25,0.5 and 0.75 mg L−1)in three explants.leaf,root and meris.ems.cultured in Ms.s.mis.lid *** callogenes.s.res.ons. was.related to the type and s.ction of the explant,as.well as.the regulator us.d,and a cell s.s.ens.on was.es.ablis.ed us.ng 0.5 mg L−1 naphthaleneacetic acid(NAA)+0.5 mg L−1 Benzylaminopurine(BAP).s.edlings.were expos.d to polyethyleneglycol(15%and 30%w/v)with a water potential of−0.87 and−2.67 MPa,res.ectively,under s.il *** s.res. was.applied through res.ricted *** weight,root s.s.em growth,and chlorophyll concentration were s.me of the parameters.that were affected by the effect of water deficit on *** *** concentration values.were s.gnificantly decreas.d by 15 at 30%PEG(19.6 s.AD units.compared to the control *** in vitro plants.the highes. concentration of proline was.found in the roots.being the treatment with 30%polyethylene glycol where the highes. concentration of this.os.oregulator was.obtained(62.5 mg g−1 DW).Under res.ricted irrigation conditions.an increas. in proline concentration was.obs.rved both in the aerial part(2.2μg 100 g−1 DW)and in the root s.s.em(1.8μg 100 g−1 DW).However,the concentrations.found were approximately ten times.greater,les. than thos. found under in vitro ***,the accumulation of proline can be cons.dered an indicator of s.res. in Agave Americana *** in vitro.

关键词： Agave americana water deficit proline