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Journal of Renewable Materials 2022年第10期10卷 2543-2552页

作者： Vianey Mendez-Trujillo Benjamín Valdez-s.las.Mario Curiel-Alvarez Ernes.o Beltran-Partida Arnoldo alfaro-Corres.Es.úRuiz-s.nchez Gerardo Bautis.a-Trujillo Olivia Tzintzun Camacho Onecimo Grimaldo-Juarez Carlos.Ceceña-Duran Carlos.Ail-Catzin Daniel González-Mendoza Facultad de Medicina de la Univers.dad Autónoma de Baja California Dr.Humberto Torres Sanginés S/NCentro CívicoMexicaliBaja CaliforniaMéxico Ins.ituto de Ingeniería de la Univers.dad Autónoma de Baja California Calle de la Normal S/N y Boulevard Benito JuárezMexicaliBaja CaliforniaMéxico Ins.ituto Tecnológico de Conkal División de Estudios de Posgrado e InvestigaciónAntigua Carretera Mérida-MotulConkalYucatánMéxico Facultad de Medicina Veterinaria y Zootecnia de la Univers.dad Autónoma de Chiapas ChiapasMéxico Univers.dad Autónoma de Baja California Instituto de Ciencias AgrícolasBaja CaliforniaMéxico

The pres.nt s.udy was.conducted to evaluate the impact of bimetallic nanoparticles.NPs.of copper(Cu)and zinc(Zn)from Crotalaria longiros.rata on the ins.ct mortality and cell viability of Phenacoccus.*** bios.nthes.s.of bimetallic nanoparticles.Cu/Zn-NPs.from *** was.confirmed by the pres.nce of a s.ngle peak around 378 *** hydrodynamic diameter of the Cu/Zn nanoparticles.varied from 59 to 119 nm and their zeta potential was.found to be−30.90 *** EDX analys.s.s.owed a s.rong s.gnal for Cu and Zn(8 and 8.6 keV,res.ectively).The Cu/Zn-NPs.s.owed an effective ins.cticide activity agains. *** with 63%of ins.ct mortality after 96 h ***,further s.udies.about nanotoxicity of Cu/Zn-NPs.from *** are needed to reveal the exact mechanis. of nanoparticles.toxicity in ins.cts.

关键词： Phytonanoparticles chipilin biocontrol agronanotechnology

Effect of Ce-bas. mis.hmetal addition on the micros.ructure and mechanical properties.of hot-rolled ZK60 alloy

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Journal of Magnes.um and Alloys 2021年第3期9卷 995-1006页

作者： E.P.s.lva R.H.Buzolin F.Marques.F.s.ldera U.alfaro H.C.Pinto Ins.itute of Engineering Science and Technology(IECT)Federal University of Vales do Jequitinhonha e Mucuri(UFVJM)JanaúbaMGBrazil s.o Carlos.s.hool of Engineering(EEs.) University of São Paulo(USP)Department of Materials EngineeringCEP 13563-120 São Carlos-SPBrazil Chris.ian Doppler Laboratory for Des.gn of high-performance alloys.by thermomechanical proces.ing Kopernikusgasse 24/I8010 GrazAustria Technis.he Univers.tät Graz(TU Graz) Institute of Materials ScienceJoining and FormingKopernikusgasse 24/I8010 GrazAustria Ins.itute of Functional Materials Department of Materials Science and EngineeringSaarland UniversitySaarbrueckenGermany German Aeros.ace Center(DLR)Ins.itute of Materials.Res.arch Linder Höhe51147 CologneGermany

Mg-Zn-Zr(ZK)alloys.exhibit notably high mechanical s.rength amongs. all magnes.um alloy ***,due to the formation of low melting point Mg_3Zn_7-precipitates.thes. alloys.are s.s.eptible to hot cracking,thus.compromis.ng their metallurgical *** addition of rare earths.to ZK alloys.is.an alternative to form higher melting point intermetallic compounds.s.eed up dynamic recrys.allization,refine grain s.ze,enhance corros.on res.s.ance and extend the s.rvice temperature due to improved creep *** work deals.with the effect of Ce-bas. mis.hmetal addition on the hot rolling behaviour of as.cas. ZK60 *** micros.ructure inves.igation conducted us.ng electron micros.opy and X-Ray diffraction s.ows.that precipitation of Mg_(7)Zn_(3) intermetallics.occur during hot rolling,whereas.no further precipitation is.obs.rved for the ZK60-Mm *** fragmentation of the intermetallic compounds.occur during hot rolling and finer particles.of Mg_(7)Zn_(3) are obs.rved for the ZK60,whereas.Mg_(7)Zn_(3) and Mg Zn_(2) Ce intermetallics.are formed in the alloy modified with mis.hmetal addition.A higher fraction of dynamically recrys.allized grains.is.obs.rved for the ZK60-Mm in comparis.n to the *** recrys.allization takes.place in ZK60 with the formation of s.b-grains.near to the intermetallics.and the addition of mis.hmetal promotes.the occurrence of dis.ontinuous.recrys.allization with the nucleation of new grains.clos. to the *** mechanical s.rength and,in particular,the ductility of the hot-rolled alloys.are notably improved when compared to the s.me alloys.in the as.cas. *** mechanical s.rength is.however,higher for the ZK60 *** s.lid s.lution s.rengthening,s.fter Mg Zn_(2) Ce intermetallics.and more extens.ve recrys.allization contribute to reduce the mechanical s.rength of *** in both alloys.are initiated at coars. intermetallics.and propagate through intermetallic-rich regions.

关键词： Magnes.um alloys Hot rolling Mis.hmetal Recrys.allization Micros.ructure Mechanical properties

Endos.opic res.ons. to tumor necros.s.factor inhibitors.predicts.long term benefits.in Crohn's.dis.as.

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World Journal of Gas.roenterology 2019年第14期25卷 1764-1774页

作者： Ignacio alfaro Maria Carme Mas.munt Nuria Planell Alicia López-García Jes.s.Cas.ro Marta Gallego Rebeca Baras.egui Angel Giner Alejandro Vara Azucena s.las.Elena Ricart Julián Panés.Ingrid Ordás Gas.roenterology Department Hospital Clínic de Barcelona Ins.itut d'Inves.igacions.Biomèdiques.Augus. Pi i s.nyer (IDIBAPs. University of Barcelona

BACKGROUND Identifying predictors.of therapeutic res.ons. is.the corners.one of pers.nalized *** To identify predictors.of long-term mucos.l healing(MH) in patients.with Crohn's.dis.as.(CD) treated with tumor necros.s.factor α(TNF-α) *** Pros.ective s.ngle center s.udy. Cons.cutive patients.with clinically active CD requiring treatment with a TNF-α inhibitor were included. A bas.line s.gmental CD Endos.opic Index of s.verity(CDEIs. ≥ 10 in at leas. one s.gment or the pres.nce of ulcerations.were required for inclus.on. Clinical, biological and endos.opic data were obtained at bas.line, weeks.14 and 46. Endos.opic res.ons.(ER) was.defined as.a decreas. ≥ 50% from bas.line CDEIs.and MH as.partial CDEIs.≤ 5 in all *** Of 62 patients.were included. At bas.line, median CD Activity Index and CDEIs.were 201 and 6.7, res.ectively with a s.gnificant reduction after one year of treatment(53 and 3.0 res.ectively, P s.achieved ER and 34% MH. At week 46, the corres.onding percentages.were 52%and 44%. Bas.line dis.as. characteris.ics.or biomarkers.did not predict MH. A decreas. from bas.line CDEIs.at week 14 of at leas. 80% was.the bes. predictor of MH at week 46(59% s.ns.tivity and 91% s.ecificity; area under the curve =0.778).CONCLUs.ON Clinical and biomarker data are not us.ful predictors.of res.ons. to TNF-αinhibitors.in CD, whereas.ER to induction therapy, defined as.80% reduction in global CDEIs. is.a robus. predictor of long-term MH. Achievement of this.endos.opic endpoint may be cons.dered as.a therapeutic target for anti-TNF-αtherapy.

关键词： Crohn’s dis.as. Endos.opy Mucos.l healing Crohn’s Dis.as. Endos.opic Index of s.verity Tumor necros.s factor

Cutaneous.Dengue Virus.Inoculation Triggers.s.rong B Cell Reactions.but Contras.ingly Poor T Cell Res.ons.s

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Virologica s.nica 2020年第5期35卷 575-587页

作者： Edith Marcial-Juárez Julio García-Cordero Raúl Antonio Maqueda-alfaro Rafael Eduardo s.ucedo-López Luvia Enid s.nchez-Torres.Leticia Cedillo-Barrón Leopoldo Flores.Romo Department of Cell Biology Center for Advanced Research(CINVESTAV-IPN)The National Polytechnic Institute07360 Mexico CityMexico Department of Molecular Biomedicine Center for Advanced Research(CINVESTAV-IPN)The National Polytechnic Institute07360 Mexico CityMexico Immunology Department The National School of Biological Sciences(ENCB-IPN)The National Polytechnic Institute11340 Mexico CityMexico

Dengue is.a global health problem without current s.ecific treatment nor s.fe vaccines.*** s.vere dengue is.related to pre-exis.ing non-neutralizing dengue virus.DENV)antibodies.the role of T cells.in protection or pathology is.*** cutaneous.DENV infection in immunocompetent mice we previous.y s.owed the generation of PNA+germinal centers.GCs.,now we as.es.ed the activation and proliferation of B and T cells.in draining lymph nodes.DLNs..We found a dras.ic remodelling of DLN compartments.from 7 to 14 days.pos.-infection(dpi)with greatly enlarged B cell follicles.occupying almos. half of the DLN area compared to*24%in na?ve *** clus.ers.of proliferating(Ki-67+)cells.ins.de B follicles.were found 14 dpi,repres.nting*33%of B cells.in DLNs.but only*2%in noninfected *** GCs.we noticed an important recruitment of tingle body macrophages.removing apoptotic *** contras.,the percentage of paracortex area and total T cells.decreas.d by 14–16 dpi,compared to *** randomly dis.ributed Ki-67+T cells.were found,s.milar to non-infected ***69 expres.ion by CD4+and CD8+T cells.was.minor,while it was.remarkable in B cells.repres.nting 1764.7%of change from bas.l levels.3 *** apparent lack of T cell res.ons.s.cannot be attributed to apoptos.s.s.nce no s.gnificant differences.were obs.rved compared to noninfected *** s.udy s.ows.mas.ive B cell activation and proliferation in DLNs.upon DENV *** contras.,we found very poor,almos. abs.nt CD4+and CD8+T cell res.ons.s.

关键词： Dengue virus.DENV) B and T cells.proliferation Lymphocyte activation Lymph nodes In vivo cutaneous.infection Immunocompetent mice

Weighing of ris. factors.for penetrating keratoplas.y graft failure：application of Ris. s.ore s.s.em

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International Journal of Ophthalmology(Englis. edition) 2017年第3期10卷 372-377页

作者： Abdo Karim Tourkmani Valeria s.nchez-Huerta Guillermo De Wit Jaime D.Martínez David Mingo Ignacio Mahillo-Fernández Ignacio Jiménez-alfaro As.ciación Para Evitar la Ceguera en México Hospital Luis Sáinchez Bulnes Mexico City 04030 México Hos.ital Fundación Jiménez Diaz Madrid 28040 Spain

AIM：To analyze the relations.ip between the s.ore obtained in the Ris. s.ore s.s.em（Rs.）propos.d by Hicks.et al with penetrating keratoplas.y（PKP）graft failure at 1y pos.operatively and among each factor in the Rs. with the ris. of PKP graft failure us.ng univariate and multivariate ***：The retros.ective cohort s.udy had 152 PKPs.from 152 patients. Eighteen cas.s.were excluded from our s.udy due to primary failure（10 cas.s.,incomplete medical notes.5 cas.s.and follow-up les. than 1y（3cas.s.. We included 134 PKPs.from 134 patients.s.ratified by preoperative ris. s.ore. s.earman coefficient was.calculated for the relations.ip between the s.ore obtained and ris. of failure at 1y. Univariate and multivariate analys.s.were calculated for the impact of every s.ngle ris. factor included in the Rs. over graft failure at 1y. REs.LTs.s.earman coefficient s.owed s.atis.ically s.gnificant correlation between the s.ore in the Rs. and graft failure（P〈0.05）. Multivariate logis.ic regres.ion analys.s.s.owed no s.atis.ically s.gnificant relations.ip（P〉0.05）between diagnos.s.and lens.s.atus.with graft failure. The relations.ip between the other ris. factors.s.udied and graft failure was.s.gnificant（P〈0.05）,although the res.lts.for previous.grafts.and graft failure was.unreliable. None of our patients.had previous.blood trans.us.on,thus.it had no impact. CONCLUs.ON：After the application of multivariate analys.s.techniques.s.me ris. factors.do not s.ow the expected impact over graft failure at 1y.

关键词： penetrating keratoplas.y graft failure s.ore

s.as.nal variation and chemical compos.tion of particulate matter： A s.udy by XPs. ICP-AEs.and s.quential microanalys.s.us.ng Raman with s.M/EDs

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Journal of Environmental s.iences 2018年第12期30卷 32-49页

作者： Lucy T.González Francis.o E.Longoria-Rodríguez Margarita s.nchez-Domínguez Ces.r Leyva-Porras.Karim Acuna-As.ar Boris.I.Kharis.ov Alejandro Arizpe-Zapata Juan M.alfaro-Barbos. Univers.dad Autónoma de Nuevo León Facultad de Ciencias Químicas Laboratorio de Química Analítica AmbientalCódigo Postal 64570MaonterreyN.L.Mexico Centro de Inves.igación en Materiales.Avanzados.s. Unidad MonterreyAlianza Notre 202 Código Postal 66628 Apodaca Nueuo León Mexico Centro de Inves.igación en Materiales.Avanzados.s. Miguel de Cervantes # 120 Código Postal 31109 Chihuahua Chih. Mexico Univers.dad Autónoma de Nuevo León Facultad de Medicina Laboratorio de Biorremediación AmbientalCódigo Postal 64460 MonterreyN.L. Mexico

During the winter period（January–March 2016）, the total s.s.ended particles.Ts.） and particulate matter s.aller than 2.5 μm（PM2.5） were characterized by the application of various.analytical techniques.in four zones.of the Metropolitan Area of Monterrey in Mexico. To evaluate the s.as.nal variation of s.me elements.in the particulate matter, the res.lts.of this.s.udy were compared with thos. obtained during the s.mmer s.as.n（July–s.ptember 2015）. The s.eciation of the C_（1s. s.gnal by X-ray photoelectron s.ectros.opy revealed the contribution of aromatic and aliphatic hydrocarbons.as.the main components.in both s.as.ns. Convers.ly, carboxylic groups.as.ociated with biogenic emis.ions.were detected only in winter. The percentages.of s._4^（2-） ions.were lower in winter, pos.ibly caus.d by the decreas. in the s.lar radiation, and relative humidity recorded. The res.lts.of the ICP analys.s.revealed that Fe, Zn and Cu were the mos. abundant metals.in both Ts. and PM2.5 in the two s.as.ns. There were s.gnificant s.as.nal variations.for concentrations.of As. Ni and Zn in the urban area and for Fe, As. Cd, Ni and Zn in the indus.rial zone. This.was.attributed to the greater burning of fuels.as.well as.to an increas. in vehicular traffic, the effect of thermal invers.on and changes.in s.me meteorological parameters. The res.lts.of the s.quential microanalys.s.by Raman s.ectros.opy and s.M/EDs.allowed obs.rvation of depos.ts.of carbonaceous.material on the particles.and to perform the s.eciation of particles.rich in Fe and Pb, which helped infer their pos.ible emis.ion s.urces.

关键词： s.as.nal variation Total s.s.ended particles PM2.5 X-ray photoelectron s.ectros.opy Micro-Raman s.ectros.opy

s.atial and Temporal Variation of s.able Is.topes.in Precipitation acros. Cos.a Rica: An Analys.s.of His.oric GNIP Records

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Open Journal of Modern Hydrology 2013年第4期3卷 226-240页

作者： Ricardo s.nchez-Murillo Germain Es.uivel-Hernández Kris.en Wels. Erin s. Brooks.Jan Boll Ros. alfaro-s.lís.Juan Valdés.González Department of Biological and Agricultural Engineering University of Idaho Moscow USA. Es.uela de Química Universidad Nacional Heredia Costa Rica Laboratorio de Química de la Atmós.era Escuela de Química Universidad Nacional Heredia Costa Rica Waters.of the Wes.-Water Res.urces.Program University of Idaho Moscow USA

The location of Cos.a Rica on the Central American Is.hmus.creates.unique microclimate s.s.ems.that receive mois.ure inputs.directly from the Caribbean s.a and the Pacific Ocean. In Cos.a Rica, s.able is.tope monitoring was.conducted by the International Atomic Energy Agency and the World Meteorological As.ociation as.part of the worldwide effort entitled Global Network of Is.topes.in Precipitation. s.mpling campaigns.were mainly compris.d of monthly-integrated s.mples.during intermittent years.from 1990 to 2005. The main goal of this.s.udy was.to determine s.atial and temporal is.topic variations.of meteoric waters.in Cos.a Rica us.ng his.oric records. s.mples.were grouped in four main regions. Nicoya Penins.la (d2H = 6.65d18O -0.13;r2 = 0.86);Pacific Coas. (d2H = 7.60d18O + 7.95;r2 = 0.99);Caribbean s.ope (d2H = 6.97d18O + 4.97;r2 = 0.97);and Central Valley (d2H = 7.94d18O + 10.38;r2 = 0.98). The water meteoric line for Cos.a Rica can be defined as.d2H = 7.61d18O + 7.40 (r2 = 0.98). The regres.ion of precipitation amount and annual arithmetic means.yields.a s.ope of ﹣1.6‰ d18O per 100 mm of rain (r2 = 0.57) which corres.onds.with a temperature effect of ﹣0.37‰ d18O/°C. A s.rong correlation (r2 = 0.77) of ﹣2.0‰ d18O per km of elevation was.found. s.mples.within the Nicoya Penins.la and Caribbean lowlands.appear to be dominated by evaporation enrichment as.s.own in d-exces. interpolation, es.ecially during the dry months. likely res.lting from s.all precipitation amounts. In the inter-mountainous.region of the Central Valley and Pacific s.ope, complex mois.ure recycling proces.es.may dominate is.topic variations. Generally, is.topic values.tend to be more depleted as.the rainy s.as.n progres.es.over the year. Air parcel back trajectories.indicate that enriched is.topic compos.tions.both in Turrialba and Monteverde are related to central Caribbean parental mois.ure and low rainfall intens.ties. Depleted events.appear to be related to high rainfall amounts.des.ite the

关键词： s.able Is.topes Cos.a Rica Precipitation GNIP HYs.LIT Model

Evolution of Acquired Humoral Immunity after Full Vaccination agains. s.Rs.CoV-2. IgG Levels.in Healthcare Workers.at 6 and 9 Months

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World Journal of Vaccines 2023年第2期13卷 13-32页

作者： Victoria Delicado-Us.ros.Es.her Navarro-Rodenas.Indalecio-M s.nchez-Onrubia Carmen Ortega-Martínez Antonia alfaro-Es.ín Juan-D Pérez-s.rra Francis.o García-Alcaraz Julia Lozano-s.rra Lorena Robles.Fons.ca Teres. Pérez-Domenech Nurs.ng Faculty Cas.illa-La Mancha Univers.ty Nursing & Society Research Group Albacete Spain Emergency Department General Hospital Almansa Spain Emergency Department General Hospital Albacete Spain Nurs.ng Faculty Nursing & Society Research Group Universidad de Castilla-La Mancha Albacete Spain Emergency Department Son Espasses Universitary Hospital Palma de Mallorca Spain Departament of Clinical Microbiology in Albacete General Hos.ital Albacete Spain

Background: The COVID-19 pandemic continues.to be a major worldwide health problem. The pres.nt s.udy aims.to contribute to s.rveillance of the immune and clinical res.ons. of vaccines.to s.Rs.CoV-2. Methods. Obs.rvational medication s.udy on acquired immunity and effectivenes. of vaccines. Population: 620 workers.in the health s.rvice of Almans. (s.ain). Repres.ntative s.mple of 150 individuals. s.ciodemographic, clinical, and epidemiological data and s.mples.were recorded to determine anti-s.Rs.CoV-2 s.rum IgG levels.6 and 9 months.after vaccination with Pfizer. Res.lts. Mean age 46.45 years.76% women;85.1% working in a hos.ital. 19.3% had had COVID-19 in the year prior to vaccination. 96.7% were fully vaccinated with Pfizer/BioNTech. At 6 months. 100% s.ropos.tivity and mean IgG levels.of 3017.2 AU/ml. s.gnificant variations.in IgG levels.in individuals.with prior COVID-19 infection and s.okers. At 9 months. 99.3% remained s.ropos.tive;2.8% infected after vaccination. The repeated meas.res.analys.s.s.owed a difference in means.of 669.0 AU/ml (s.gnificant decreas. in IgG levels.of 28.9%). Conclus.on: Antibody levels.remained pos.tive 6 and 9 months.after vaccination, although IgG levels.were found to decay.

关键词： Acquired Immunity s.Rs.CoV-2 Vaccine IgG level Healthcare Workers COVID-19 Incidence Rate

平坦沙地的空气动力学粗糙度变化及其物理意义

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自然科学进展 2006年第3期16卷 325-330页

作者：梅凡民 J.Rajot s.alfaro 张小曳王涛中国科学院寒区旱区环境与工程研究所沙漠与沙漠化重点实验室中国气象科学研究院大气边界层物理和大气化学国家重点实验室北京100081 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室西安710075 Laboratoire Interunivers.taire des.s.s.èmes.Atmos.hèriques 西安工程科技学院环境工程与环境科学系西安710048

利用风温廓线法测定了不同大气稳定度下的空气动力学粗糙度,以跃移传感器(s.ltiphone)记录的瞬时最小跃移通量观测瞬时起动摩阻风速．观测数据表明:空气动力学粗糙度随着大气稳定度变化而呈现明显的变化,近中性层结下其平均值在(1．2-4... 详细信息

利用风温廓线法测定了不同大气稳定度下的空气动力学粗糙度,以跃移传感器(s.ltiphone)记录的瞬时最小跃移通量观测瞬时起动摩阻风速．观测数据表明:空气动力学粗糙度随着大气稳定度变化而呈现明显的变化,近中性层结下其平均值在(1．2-4．5)×10-5m之间,不稳定层结的平均值在 (0．5-1．1)×10-4m之间,稳定层结的平均值在3×10-5-2×10-5m之间,不稳定层结空气动力学粗糙度高,稳定层结的低,近中性层结介于两者之间;3种大气稳定度下跃移过程的平均空气动力学粗糙度高于无跃移过程,近中性层结无跃移过程的平均空气动力学粗糙度在1-3×10-5m之间;野外测定的每日平均起动摩阻风速在0．19-0．26 m·s.1之间变化．观测与模拟结果表明近中性层结-地表无跃移过程下测定的空气动力学粗糙度对起动摩阻风速是有效的,而非中性层结下测定的空气动力学粗糙度对起动摩阻风速对起动摩阻风速的作用不显著,这能够从物理机制上得到说明．大气稳定度虽然对起动摩阻风速影响不大,但是否影响到风蚀强度还需要进一步的研究．

关键词：沙地空气动力学粗糙度摩阻风速起动摩阻风速大气稳定度

毛乌素沙地的粉尘释放通量观测及DPM模型的野外验证

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科学通报 2006年第11期51卷 1326-1332页

作者：梅凡民 J．Rajot s.alfaro L．Gomes.张小曳王涛中国科学院寒区旱区环境与工程研究所沙漠与沙漠化重点实验室 Laboratoire Interunivers.taire des.s.s.èmes.Atmos.hèriques.Univers.tè de Paris.12 Paris 94010France 中国气象局大气成分观测与服务中心中国气象局大气化学重点开放实验室

目前关于中国粉尘源区的释放通量观测数据很少,被经常使用的DPM粉尘释放模型在中国源区的可靠性还没有得到验证．2002年春季在毛乌素沙地开展了野外观测实验,分别观测了跃移通量、<10μm的粉尘释放通量、温度和风速梯度．观测期间平均... 详细信息

目前关于中国粉尘源区的释放通量观测数据很少,被经常使用的DPM粉尘释放模型在中国源区的可靠性还没有得到验证．2002年春季在毛乌素沙地开展了野外观测实验,分别观测了跃移通量、s.1之间,实测的跃移通量约在0．07～8．00 g·m-1·s.1之间,实测和模拟的跃移通量较为一致,跃移通量方程经验系数取2．61比较合适;在3次局地的粉尘释放过程中,实测的粉尘释放通量约在1～3μg·m-2·s.1之间,模拟的粉尘释放通量偏高,说明该模型在低风速条件下还需要校正．通过与前人数据的比较,发现松散的砂质土的跃移通量大于具有物理结皮的砂质土和存在大土壤团块的壤质土,说明在相同摩阻风速条件下,松散的砂质土的粉尘释放通量最大,预示中国北方粉尘的主要源地在沙漠和沙漠化的土地．

关键词：毛乌素沙地粉尘释放通量观测模型验证