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Rela.ive toxicity of three whea. herbicides to two species of Coccinellida.

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Insect Science 2010年第5期17卷 434-438页

作者： j. P. Micha.d Germa. vargas Depa.tment of Entomology Kansas State University Hays Kansas USA

On the High Pla.ns of the USa. herbicides specific for broa.-lea. weeds a.e regula.ly a.plied to winter whea. in the ea.ly spring, sometimes la.e enough to coincide with the coloniza.ion of fields by cerea. a.hids a.d their na.ura. enemies. We tested the toxicity of three such herbicides, a.ly （Dupont）, Ra.e （Syngenta. a.d 2,4-D ester （generic）, to neona.e la.va. of two coccinellid species importa.t in cerea. a.hid biocontrol, Coleomegilla.ma.ula.a.DeGeer a.d Hippoda.ia.convergens Gurrin-Mrneville. Topica. trea.ment of la.va. with 2,4-D resulted in 25% a.d 60% morta.ity in the two species, respectively, with surviving C. ma.ula.a.la.va. experiencing a.5% increa.e in developmenta. time. No significa.t effects were noted for the other two ma.eria.s, sa.e for a.2.5% increa.e in developmenta. time for C. ma.ula.a.la.va. exposed to Ra.e. No ma.eria. ca.sed significa.t morta.ity in either species when la.va. were fed on prey （Schiza.his gra.inum Ronda.i） trea.ed with herbicide 24 h ea.lier, a.though 2,4-D reduced developmenta. time slightly in C. ma.ula.a. When herbicide a.plica.ions a.e dela.ed enough in spring to coincide with a.hid a.tivity in whea., fa.mers ca. reduce the risk of disrupting biologica. control by selecting a. a.terna.ive to 2,4-D.

关键词： 2,4-D Coleomegilla.ma.ula.a dica.ba Hippoda.ia.convergens Schiza.his gra.inum thifensulfuron methyl

Effect of Multipoint Heterogeneity on Nonlinea. Tra.sforma.ions for Geologica. Modeling: Porosity-Permea.ility Rela.ions Revisited

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j.urna. of China.University of Geosciences 2008年第1期19卷 85-92页

作者： j.a.vargas-Guzmán Sa.di a.a.co Dhahran 31311 KSA

a. a.a.ysis of sta.istica. expected va.ues for tra.sforma.ions is performed in this study to qua.tify the effect of heterogeneity on spa.ia. geologica. modeling a.d eva.ua.ions. a.gebra.c tra.sforma.ions a.e frequently a.plied to da.a.from logging to a.low for the modeling of geologica. properties. Tra.sforma.ions ma. be powers, products, a.d exponentia. opera.ions which a.e commonly used in well-known rela.ions （e.g., porosity-permea.ility tra.sforms）. The results of this study show tha. correct computa.ions must a.count for residua. tra.sforma.ion terms which a.ise due to la.k of independence a.ong heterogeneous geologica. properties. In the ca.e of a. exponentia. porosity-permea.ility tra.sform, the va.ues ma. be positive. This proves tha. a.simple exponentia. model ba.k-tra.sformed from linea. regression underestima.es permea.ility. In the ca.e of tra.sforma.ions involving two or more properties, residua. terms ma. represent the contribution of heterogeneous components which occur when properties va.y together, rega.dless of a.pa.r-wise linea. independence. a.consequence of power- a.d product-tra.sform models is tha. regression equa.ions within those tra.sforma.ions need corrections via.residua. cumula.ts. a.genera.iza.ion of this result is tha. tra.sforma.ions of multiva.ia.e spa.ia. a.tributes require multiple-point ra.dom va.ia.le rela.ions. This a.a.ysis provides pra.tica. solutions lea.ing to a.methodology for nonlinea. modeling using correct ba.k tra.sforma.ions in geology.

关键词： reservoir sta.ic model intrinsic permea.ility non-Ga.ssia. nonlinea. residua. moment cumula.t unbia.ed simula.ion pa.a.eter.

Guest Editoria.: Power Systems with Increa.ing Renewa.le Penetra.ion: Ma.ket, Opera.ions, Pla.ning a.d Regula.ion

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j.urna. of Modern Power Systems a.d Clea. Energy 2021年第4期9卷 I0001-I0002页

作者： a.tonio j.Conej. j.a.hui Wa.g a.gel a.cos vargas Ohio Sta.e University ColumbusOhioUSA Southern Methodist University DallasTexasUSA University of Seville SevilleSpain

Our goa. in putting together this specia. section is to contribute to the conversa.ion on control,opera.ions,pla.ning a.d regula.ion of power systems with increa.ing renewa.le *** a.conversa.ion will hopefully involve regula.ors,opera.ors,producers,consumers,a.d the resea.ch *** hope tha. this specia. section will spur innova.ive idea. tha. will contribute to ensuring a.secure,efficient,a.d environmenta.ly friendly supply of electrica. ener-gy,a.d to eventua.ly a.hieve a.ca.bon-free electricity *** specia. section includes 15 resea.ch a.ticles on control,opera.ions,regula.ion,pla.ning,foreca.ting,a.d estima.ion of power systems with increa.ing renewa.le penetra.ion.

关键词： Ma.ket opera.ions eventua.ly

Enha.cement a.d Optimiza.ion of a.O Na.o-crysta.line Films Properties by the a.dition of a.etyla.etone a. Modifier in the Sol-gel Process

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j.urna. of Wuha. University of Technology(Ma.eria.s Science) 2015年第5期30卷 873-881页

作者： Ga.a.iz-pérez j.a.CHEN Fei SHEN Qia.g vargas-ga.cía.j.R 张联盟 Sta.e Key La.ora.ory of a.va.ced Technology for Ma.eria.s Synthesis a.d Processing Wuhan University of Technology Dept.of Ma.eria.s a.d Meta.lurgica. Eng. National Polytechnic Institute

Sb-doped Sn O2(a.O) thin films ha.e been prepa.ed using the spin coa.ing method by selecting the proper a.ount of a.etyla.etone a. solution modifier. a.l a.O powders a.d films exhibited the ca.siterite rutile-like structure in a.crysta. size below 10 nm under a.l the experimenta. conditions a.d a.nonpreviously reported crysta. structure wa. observed a. high a.etyla.etone loa.s. The a.etyla.etone mola. ra.io influenced nota.ly the optica. a.d electrica. properties of a.O films. When prepa.ed a. a. a.etyla.etone mola. ra.io of 4, a.O films exhibited optica. tra.spa.encies a.ove 90% in the visible region a.d a.ove 40% in the UV region for thicknesses of 100 a.d 300 nm. Films in a.thickness of 100 nm a.d a. a. a.nea.ing tempera.ure of 650 ℃ a.counted for a.high tra.spa.ency of 97% in the visible wa.elength. Films prepa.ed a. a. a.etyla.etone mola. ra.io of 4 exhibited a. electric resistivity of 1.33×10-3 Ω·cm a. a. a.nea.ing tempera.ure of 650 ℃. The optima. Sb content for a.O films wa. found to be 8 a.%. The rela.ionships a.ong the properties of sta.ting solutions, the experimenta. pa.a.eters, a.d properties of a.O films a.e discussed.

关键词： tin oxide films a.timony doping a.etyla.etone optica. tra.spa.ency electric properties

Precipita.ion a.a.ysis of a.-ca.t HK40 steel a.ter isotherma. a.ing

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Interna.iona. j.urna. of Minera.s,Meta.lurgy a.d Ma.eria.s 2017年第10期24卷 1125-1133页

作者： M.L. Sa.cedo-Munoz a. Ortiz-Ma.isca. V.M. Lopez-Hira.a.j.D. Villega.-Ca.dena. Orla.do Soria.o-vargas Erika.O. a.ila.Da.ila Instituto Politecnico Na.iona. (ESIQIE) Apdo. Postal 118-395 Mexico D.F. 07300 Universida. Politecnica Metepec y Tultitlan Edo. Mex. Mexico Tecnológico de Estudios Superiores de j.cotitla. Jocotitlan Edo. Mex. Mexico

a.-ca.t HK40 steel wa. a.ed a. 700, 800, or 900℃ for times a. long a. 2000 h. Microstructura. cha.a.teriza.ion showed tha. the prima.y M_7C_3 ca.bide network conta.ned a.substa.tia. content of ma.ga.ese, in a.reement with the microsegrega.ion of ma.ga.ese ca.cula.ed by Thermo-Ca.c using the Scheil–Gulliver module. The dissolution of prima.y ca.bides ca.sed the solute supersa.ura.ion of a.stenite a.d subsequent precipita.ion of fine M_(23)C_6 ca.bides in the a.stenite ma.rix for a.ed specimens. During prolonged a.ing, the ca.bide size increa.ed with increa.ing time beca.se of the coa.sening process. a.time–tempera.ure–precipita.ion dia.ra. for M_(23)C_6 ca.bides wa. ca.cula.ed using the Thermo-Ca.cPRISMa.softwa.e; this dia.ra. showed good a.reement with the experimenta. growth kinetics of precipita.ion. The fine ca.bide precipita.ion ca.sed a. increa.e in ha.dness; however, the coa.sening process of ca.bides promoted a.decrea.e in ha.dness. Na.oindenta.ion tests of the a.stenite ma.rix indica.ed a. increa.e in ductility with increa.ing a.ing time.

关键词： a.-ca.t HK40 steel ca.bide precipita.ion a.ing precipita.ion simula.ion

Living donor liver tra.spla.ta.ion for pa.ients with a.va.ced hepa.ocellula. ca.cinoma

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Hepa.oma.Resea.ch 2020年第11期6卷 18-31页

作者： j.Micha.l Cullen Pa.la.vargas Nicola. Golda.a.ena Depa.tment of Surgery University of VirginiaCharlottesvilleVA 22908USA Division of Tra.spla.ta.ion Department of SurgeryUniversity of VirginiaCharlottesvilleVA 22908USA

Liver tra.spla.ta.ion(LT)is the trea.ment of choice for pa.ients with hepa.ocellula. ca.cinoma.HCC)a.d underlying liver *** the orga. sca.city,LT for pa.ients with HCC ha.e been restricted to those pa.ients a.socia.ed with the highest ***,ma.y pa.ients with extended criteria.HCC ca. still benefit from LT,but due to decea.ed orga. shorta.e,they a.e not offered tha. *** donor liver tra.spla.ta.ion(LDLT)emerged a. a.successful stra.egy to overcome orga. shorta.e a.ound the world a.d a. LDLT experience grows,this technique might offer the opportunity to expa.d the indica.ions of LT to pa.ients with a.va.ced ***,since LDLT is not competing for decea.ed donor orga.s,ma.y pa.ients with extended criteria.HCC who could still benefit from tra.spla.ta.ion ma. ha.e a.cess to this trea.ment *** this review,we will discuss the role of LDLT for pa.ients with a.va.ced-sta.e HCC a.d how LDLT a.lows for sa.e expa.sion of HCC tra.spla.t criteria.

关键词： Living donor liver tra.spla.ta.ion hepa.ocellula. ca.cinoma liver tra.spla.ta.ion tra.spla.t oncology clinica. outcomes

Effect of different exogenous fa.ty a.ids on the cytosolic tria.ylglycerol content in bovine ma.ma.y cells

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a.ima. Nutrition 2019年第2期5卷 202-208页

作者： Eina. vargas-Bello-Pérez j.a. j.Loor Philip C Ga.nsworthy The University of Nottingha. Sutton Bonington Campus Depa.tment of Veterina.y a.d a.ima. Sciences Faculty of Health and Medical SciencesUniversity of Copenhagen Depa.tment of a.ima. Sciences a.d Division of Nutritiona. Sciences University of Illinois1207 West Gregory DriveUrbana

The obj.ctive of this study wa. to determine how cytosolic tria.ylglycerols(Ta.) a.e stored in ma.ma.y cells a.d whether this depends on the individua. chemica. configura.ion of fa.ty a.ids(Fa.. This obj.ctive wa. a.complished by a.dition of different Fa.to a.Fa.free medium used to culture ma.ma.y a.veola. cells-la.ge T a.tigen cells(Ma.-T). Trea.ments consisted of a.ding Fa.pa.mita.e, stea.a.e, olea.e, linolea.e,rumenic a.id [CLa., ela.da.e a.d va.cina.e) solutions to the medium a. 100, 200, 300 a.d 400 mmol/L concentra.ions for a.24-h incuba.ion period. a. the end of ea.h incuba.ion period, cytosolic Ta., DNa.a.d protein contents were mea.ured. Pa.mita.e, va.cena.e, linolea.e a.d CLa.increa.ed(P a.(μg/mg protein). Pa.mita.e a.d CLa.increa.ed(P a. a.j.sted for DNa.content. Overa.l, effects on cytosolic Ta. a.cumula.ion depended on individua. Fa.structure(cha.n length, degree of sa.ura.ion, a.d number a.d orienta.ion of Fa.double bonds). In a.dition, the long-cha.n Fa.used in this study did not ha.e a.detrimenta. effect on Ma.-T cells a. indica.ed by cytosolic protein a.d DNa.contents reflecting their biologica. role in lipid a.cumula.ion.

关键词： Long cha.n fa.ty a.id Ma.ma.y cells Tra.s fa.ty a.id Tria.ylglycerol a.cumula.ion Va.cenic a.id

Popula.ion dyna.ics of three liza.d species from the genus Sceloporus:short-term cha.ges in demogra.hic pa.a.eters

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Integra.ive Zoology 2019年第6期14卷 542-560页

作者： Selene vargas-Ga.CÍa.Víctor a.Ga.Z Isra.l SOLa.O-Za.a.ETa.j.j.ime ZÚÑIGa.VEGA Gra.ua.e Progra. in Biologica. Sciences National Autonomous University of MexicoUniversity CityMexico CityMéxico Depa.tment of Ecology a.d Na.ura. Resources Faculty of SciencesNational Autonomous University of MexicoUniversity CityMexico CityMéxico.

Most demogra.hic studies focus on numerica. cha.ges tha. occur within popula.ions a.ross ***,typica.ly studies a. a. intera.nua. sca.e do not provide informa.ion on the pa.ticula. times of the yea.(pa.ticula. months or sea.ons)when ra.es of surviva.,recruitment,or migra.ion increa.e or decrea.e due to physiologica.,beha.iora. or ecologica. *** monthly or sea.ona. cha.ges in demogra.hic pa.a.eters ma. lea. to substa.tia. va.ia.ions in popula.ion *** this study,we collected ca.ture-ma.k-reca.ture da.a.on 3 species of liza.ds of the genus Sceloporus(Sceloporus torqua.us,Sceloporus gra.micus a.d Sceloporus mega.epidurus)found in ecologica.ly simila. ha.ita.s to exa.ine potentia. cha.ges in demogra.hic ra.es a.ong 3 different clima.ic sea.ons:ra.ny,cold-dry a.d wa.m-dry *** tested different hypotheses a.out the effect of these sea.ons on surviva.,recruitment of new a.ults,a.d tempora.y *** found tha. during the sea.on with severe therma. constra.nts,the cold-dry sea.on,surviva. of *** decrea.ed *** a.so detected a.considera.le increa.e in the recruitment ra.e of *** during the ra.ny sea.on,when these liza.ds a.e esta.lishing territories a.d finding *** contra.t,we found no evidence of intra.a.nua. cha.ges in the ra.e of tempora.y *** a.dition,we ca.cula.ed a.unda.ce a.d popula.ion growth ra.es for ea.h species a.d for ea.h *** study represents a.significa.t contribution to the understa.ding of intra.a.nua. demogra.hic va.ia.ion in liza.ds.

关键词： a.unda.ce recruitment Sceloporus liza.ds surviva. tempora.y emigra.ion

Inflow a.d outflow permea.ility tests in a.very soft cla. under low stresses

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j.urna. of Rock Mecha.ics a.d Geotechnica. Engineering 2024年第8期16卷 3270-3283页

作者： j.W.S.vargas F.a.B.Da.ziger F.R.Lopes T.Lunne Federa. University of Rio de j.neiro Rio de JaneiroBrazil Norwegia. Geotechnica. Institute OsloNorway

In situ inflow a.d outflow permea.ility tests with the Ba. probe a. Sa.a.uíII soft cla. test site a.e presented.a.description of the Ba. permea.ility test is provided,discussing its a.va.ta.es a.d shortcomings,especia.ly in the ca.e of very soft cla.s under low *** pressures were monitored during probe insta.la.ion a.d were found to be slightly lower tha. piezocone u2 pore pressures,consistent with the position of the *** role of filter tip sa.ura.ion wa. investiga.ed a.ter the usua. sa.ura.ion procedure provided a. unsa.isfa.tory pore pressure response during probe *** show tha. the va.uum sa.ura.ion procedure provides a.equa.e response during insta.la.ion a.d increa.es the relia.ility of the coefficient of permea.ility determina.ion in ea.ly *** inflow a.d outflow tests yielded simila. results,indica.ing tha. ca.eful execution of the test ca. lea. to good test repea.a.ility rega.dless of the loa.ing *** sequences of a.terna.ed inflow a.d outflow tests ha.e yielded simila. results,indica.ing tha. soil reconsolida.ion a.d filter clogging were negligible in the tests *** a.e presented concerning the rela.ionship between index pa.a.eters a.d the in situ coefficient of permea.ility for Sa.a.uíII cla.,which plot outside the ra.ge of existing da.a.a.es.

关键词： Permea.ility test Soft cla. Ba. probe Inflow a.d outflow tests