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Effect of Using Two Different Types of Ca.bon Na.otubes for Bla.kberry (Rubus a.enotrichos) in Vitro Pla.t Rooting, Growth a.d Histology

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a.erica. Journa. of Pla.t Sciences 2014年第24期5卷 3510-3518页

作者： Dora.flores Ra.da.l Cha.ón luis a.va.a.o a.exa.der Schmidt Ca.los a.va.a.o Jua. Cha.es Centro de Investiga.ión en Biotecnología Instituto Tecnológico de Costa Rica Cartago Costa Rica La.ora.orio de Na.otecnología Instituto Tecnológico de Costa Rica Cartago Costa Rica

Na.opa.ticles a.e a.le to intera.t with biomolecules, crea.ing functiona. na.osystems for tra.sporta.ion within in vivo cells, a.d lea.ing to the study of their potentia. a.plica.ions in the field of pla.t biotechnology. Therefore, the a.m of this resea.ch wa. to determine the growth a.d rooting effect of functiona.ized (SWCNTs-COOH) a.d non-functiona.ized na.opa.ticles with iron residue inner pa.ticles (SWCNTs-Fe) in bla.kberry (Rubus a.enotrichos) in vitro pla.ts. Two types of SWCNTs were used, both of them cha.a.terized in a.solid sa.ple through Ra.a. spectroscopy (λ = 532 nm) showing differences in the G ba.d between SWCNT + Fe a.d SWCNT + COOH. The in vitro pla.ts (a.proxima.ely 15 mm length) were inocula.ed in a.rooting medium. Six trea.ments were esta.lished: 4, 8, 12 μg/ml for ea.h type of SWCNTs a.d a.control without na.otubes. The a.sessed va.ia.les consisted of the a.era.e number of da.s for root emergence, a.era.e number of roots per pla.t, a.era.e root length per pla.t a.d the a.era.e stem length. This study determined tha., in genera., the SWCNTs-COOH promoted the growth of the in vitro pla.ts under this a.sa., when compa.ed to the SWCNTs-Fe tria.s. The lowest SWCNTs-COOH dose evidenced the best results for the a.sessed va.ia.les. a.ditiona.ly, the histologica. a.a.ysis a.so evidenced tha. the pla.ts trea.ed with SWCNTs-COOH na.otubes (4 μg/ml) increa.ed their cellula. meta.olism when compa.ed to the control group.

关键词： Single Wa.led Ca.bon Na.otubes Growth Rooting Bla.kberry TEM

The Institutiona.iza.ion of Life Cycle a.sessment in Mexico

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Journa. of Environmenta. Protection 2015年第8期6卷 804-812页

作者： Nora.Munguia.Cla.a.Rosa.ia.a.va.ez Ra.a.l Perez a.ma.flores Fra.cisco Ma.tinez luis Vela.quez Susta.na.ility Gra.ua.e Progra. University of Sonora Hermosillo Mexico Institute of a.ro-Livestock Sciences Autonomous University of Mexico State Toluca Mexico

This a.ticle presents a.study of Life Cycle a.sessment (LCa. a. a.sla.ghterhouse loca.ed in north-western Mexico with the purpose of testing the premise of a.low degree of institutiona.iza.ion of Industria. Ecology in Mexico. The a.ticle a.ms a. a.a.yzing the current role pla.ed by the Mexica. a.a.emia.in increa.ing the degree of institutiona.iza.ion of the concept of LCa.in northwestern Mexico. There wa. conducted a.life cycle a.a.ysis study a.cording to the sta.da.ds ISO 14040: 2006, NMX-Sa.-14040-IMNC-2008NOM in a.Federa.ly Inspected Type (TIF by Spa.ish a.ronym) Sla.ghterhouse in the sta.e of Sonora.in Northwest Mexico. The sla.ghter process wa. cha.a.terized by observing the production ta.ks during severa. wa.kthroughs the production lines a.d by ha.ing short interviews with workers, supervisors, a.d the ma.a.er. The CH4 emissions were ca.cula.ed using the guidelines suggested by the Intergovernmenta. Pa.el on Clima.e Cha.ge (IPCC 2006). The present LCa.ca.e study revea.ed opportunities for improving the environmenta. performa.ce of the sla.ghterhouse by ta.ing mea.ures such a. the reduction of CH4 from enteric fermenta.ion since metha.e wa. one of the ma.n greenhouse ga.es responsible for clima.e cha.ge. a.though, the LCa.genera.ed relia.le informa.ion in terms of clima.e cha.ge or wa.er eutrophica.ion, the cha.ces of implementing susta.na.le initia.ives were unlikely beca.se the benefits to reduce the impa.ts to clima.e cha.ge or to reduce the wa.er crisis would be unnoticea.le a.d una.forda.le for compa.ies. Findings in this study a.so confirmed the importa.ce of Mexica. universities for promoting a.d conducting more LCa.studies a.ong priva.e a.d public orga.iza.ions in order to guide firms towa.ds this tool. The ca.e study here presented gives insights to LCa.sta.eholders in Mexico to implement or improve the effectiveness of their potentia. LCa.initia.ives through the identifica.ion of stra.egies, opportunities, a.d ba.riers.

关键词： Institutiona.iza.ion a.a.emia LCA Susta.na.ility Sla.ghterhouse Mexico

Electrosta.ic a.d Ma.netosta.ic Forces Tha. a.ise from Electrosta.ic a.d Ma.netosta.ic Pressures

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Journa. of Electroma.netic a.a.ysis a.d a.plica.ions 2019年第3期11卷 25-40页

作者： José-luis Jiménez-Ra.írez Igna.io Ca.pos-flores José-a.tonio-Edua.do Roa.Neri Depa.ta.ento de Física Facultad de Ciencias Universidad Nacional Autónoma de México CDMX México área.de Física.Teórica.y Ma.eria.Condensa.a División de Ciencias Básicas e Ingeniería Universidad Autónoma Metropolitana Unidad Azcapotzalco México D. F. México

With the insight provided by a.ba.a.ce equa.ion of electroma.netic momentum, we compa.e the force on a.dielectric sla. inside a.ca.a.itor with the force on a.ma.netiza.le rod inside a.solenoid. We conclude tha. these forces a.e not exa.tly a.a.ogous, a. usua.ly thought. We present a.device tha. is a.proper a.a.ogy of the ca.e of a.dielectric sla. inside a.ca.a.itor. Our a.a.ysis shows the significa.ce of the electrosta.ic a.d ma.netosta.ic pressures to the understa.ding of these effects a.d shows the conceptua. differences between both ca.es.

关键词： Pola.iza.le Electric a.d Ma.netic Media Electric a.d Ma.netic Pressures Electroma.netic Force Densities Ma.roscopic Ma.well Equa.ions Ba.a.ce Equa.ions of Electroma.netic Momentum

a.New Perspective of the Force on a.Ma.netiza.le Rod inside a.Solenoid

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Journa. of Electroma.netic a.a.ysis a.d a.plica.ions 2018年第10期10卷 171-183页

作者： José-luis Jiménez-Ra.írez Igna.io Ca.pos-flores José-a.tonio-Edua.do Roa.Neri Depa.ta.ento de Física Facultad de Ciencias Universidad Nacional Autónoma de México México D. F. México área.de Física.Teórica.y Ma.eria.Condensa.a División de Ciencias Básicas e Ingeniería Universidad Autónoma Metropolitana Unidad Azcapotzalco México D. F. México

We a.a.yze the fa.ilia. effect of the pulling of a.ma.netiza.le rod by a.ma.netic field inside a.solenoid. We find tha. the a.a.ogy with the pulling of a.dielectric sla. by a.cha.ged ca.a.itor is not a. direct a. usua.ly thought. Indeed, there a.e two possibilities to pursue the a.a.ogy, a.cording to the correspondence used,?either E → B a.d D → H, or E?→ H a.d D?→ B. One of these results in a. incorrect sign in the force, while the other gives the correct result. We a.oid this a.biguity in the usua. energy method a.plying a.momentum ba.a.ce equa.ion derived from Ma.well’s equa.ions. This method permits the ca.cula.ion of the force with a.volume integra.ion of a.force density, or with a.surfa.e integra.ion of a.stress tensor. a. interpreta.ion of our results esta.lishes tha. the force a.ts a. the interfa.e a.d ha. its origin in Ma.well′s ma.netic stresses a. the medium-va.uum interfa.e. This a.proa.h provides new insights a.d a.new perspective of the origin of this force.

关键词： Force on a Rod in a Solenoid Ma.netosta.ic Force Ma.well Momentum Ba.a.ce Equa.ion

Induced Dipoles in Electroma.netic Media.in Motion

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Journa. of Electroma.netic a.a.ysis a.d a.plica.ions 2018年第11期10卷 185-192页

作者： José-a.tonio-Edua.do Roa.Neri José-luis Jiménez-Ra.írez Igna.io Ca.pos-flores área.de Física.Teórica.y Ma.eria.Condensa.a División de Ciencias Básicas e Ingeniería Universidad Autónoma Metropolitana Unidad Azcapotzalco México D. F. México Depa.ta.ento de Física Facultad de Ciencias Universidad Nacional Autónoma de México México D. F. México

We present a.non-rela.ivistic a.proa.h to the equiva.ent pola.iza.ion Peq=(1/c2)v×Meq, tha. a.pea.s in a.ma.netized medium in motion. We a.ply a. a.a.ogous method to tha. used by Pa.ofsky a.d Phillips to ca.cula.e the symmetric effect, the equiva.ent ma.netiza.ion tha. a.pea.s in a.pola.ized dielectric in motion, Meq=P×v,?This method is ba.ed on a.pa.ticula. expression of Ma.well’s equa.ions a.d the a.plica.ion of the convective deriva.ive. These a.thors a.gue, however, tha. the equiva.ent pola.iza.ion ca. be obta.ned only with a.rela.ivistic a.proa.h. We show tha. with the sa.e method, but with a.different a.d equiva.ent expression of Ma.well’s equa.ions, this effect ca. a.so be ca.cula.ed. In this wa. both effects ca. be considered rela.ivistic effects to first order in v/c.

关键词： Moving Media Pola.ized Dielectric Ma.roscopic Ma.well Equa.ions Induction of Ma.netic Dipoles

Ba.a.ce Equa.ions of Electroma.netic a.gula. Momentum

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Journa. of Electroma.netic a.a.ysis a.d a.plica.ions 2017年第12期9卷 203-217页

作者： Igna.io Ca.pos-flores José luis Jiménez-Ra.írez José a.tonio Edua.do Roa.Neri Depa.ta.ento de Física Facultad de Ciencias Universidad Nacional Autónoma de México Mexico City México área.de Física.Teórica.y Ma.eria.Condensa.a División de Ciencias Básicas e Ingeniería Universidad Autónoma Metropolitana Unidad Azcapotzalco Mexico City México

We give theoretica. founda.ion to torque densities proposed in the pa.t, like the one used by Beth to study experimenta.ly the a.tion of circula.ly pola.ized ra.ia.ion on a.birefringent ma.eria., or tha. proposed by Ma.suripur to resolve a.seeming pa.a.ox concerning the Lorentz force la. a.d rela.ivity. Our results provide new insights into electroma.netic theory, since they provide a.unified a.d genera. trea.ment of the ba.a.ce of linea. a.d a.gula. momentum tha. permits a.better a.sessment of some torques. Thus in this work we extend the deriva.ions we ha.e ma.e of ba.a.ce equa.ions for electroma.netic linea. momentum to ba.a.ce equa.ions for electroma.netic a.gula. momentum. These ba.a.ce equa.ions a.e derived from the ma.roscopic Ma.well equa.ions by mea.s of vector a.d tensor identities a.d from the different wa.s in which these equa.ions a.e written in terms of fields E, D, B, a.d H, a. well a. pola.iza.ions P, a.d M. Therefore these ba.a.ce equa.ions a.e a. sound a. the ma.roscopic Ma.well equa.ions, with the limita.ions of the constitutive rela.ions.

关键词： Ba.a.ce Equa.ions Founda.ions of Electrodyna.ics Electroma.netic a.gula. Momentum Ma.roscopic Ma.well Equa.ions a.ra.a.-Minkowski Controversy

How Does a.ise the Force on a.Dielectric Sla. in a.Pa.a.lel Pla.e Ca.a.itor?

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Journa. of Electroma.netic a.a.ysis a.d a.plica.ions 2018年第7期10卷 131-142页

作者： Igna.io Ca.pos-flores José-luis Jiménez-Ra.írez José-a.tonio-Edua.do Roa.Neri Depa.ta.ento de Física Facultad de Ciencias Universidad Nacional Autónoma de México Mexico City Mexico rea.de Física.Teórica.y Ma.eria.Condensa.a División de Ciencias Básicas e Ingeniería Universidad Autónoma Metropolitana Unidad Azcapotzalco Mexico City Mexico

We a.dress the problem of the force exerted on a.dielectric sla. pa.tia.ly introduced into a.cha.ged pa.a.lel pla.e ca.a.itor. This elementa.y problem is usua.ly solved ca.cula.ing this force a. the gra.ient of a. energy a.d a.tributing its origin to the a.tion of the fringing field outside the ca.a.itor on the dipoles of the dielectric sla.. By a.plying Ma.well’s theory of electroma.netic stresses, we show tha. this force a.ts a. the interfa.e dielectric-va.uum a.d origina.es from the a.tion of these stresses. This a.proa.h permits to obta.n the force a. a.volume integra.ion of a.force density, or a. a.surfa.e integra. of a.stress tensor. This force density a.d the stress tensor a.e pa.t of a.momentum ba.a.ce equa.ion derived from Ma.well’s equa.ions.

关键词： Cla.sica. Electroma.netism Ma.well Equa.ions Electrosta.ics Ma.well Ba.a.ce Equa.ion Ma.well Stress Tensor

Comprehensive Model for Business Tra.ning Ba.ed on B-Lea.ning

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Journa. of Modern a.counting a.d a.diting 2011年第8期7卷 859-863页

作者： Fema.do Ome-Ca.ra.co Cla.dia.Ma.c6n-Cervera. Jose luis Ma.tinez-flores Universida. Popula. a.t6noma.del Esta.o de Puebla.（UPa.P） Mexico

Tra.ning a.d development for sta.f a.e the best option a.a.la.le for compa.ies to survive in a.highly competitive globa. business environment, but for those compa.ies tha. opera.e business units loca.ed in different cities or countries, it ha. a.high cost for the grea. dispersion of sta.f. B-lea.ning is presented a. a.via.le a.d interesting option tha. a.hieves superior results in the lea.ning process while significa.tly reducing the costs a.socia.ed with tra.ning. In the sta.e of the a.t, B-lea.ning ha. been a.dressed with grea.er empha.is in a.a.emics a.d the few a.ticles tha. focused on a.dressing business tra.ning, present pa.tia. solutions to the problems exposed. This pa.er proposes a.model tha. offers a.comprehensive solution for ma.a.ing corpora.e tra.ning ba.ed on B-lea.ning, a.d consists of three pha.es： design, development a.d implementa.ion.

关键词： tra.ning competitiveness compa.ies with geogra.hica.ly dispersed opera.ions B-lea.ning

Sha.e shelters increa.e surviva. a.d photosynthetic performa.ce of oa. tra.spla.ts a. a.a.doned fields in semi-a.id clima.es

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Journa. of Forestry Resea.ch 2013年第1期24卷 23-28页

作者： Cla.dia.González-Sa.va.ierra.Ernesto Iván Ba.a.o Joel flores Jua. Pa.lo Roda. División de Ciencia. a.bienta.es Instituto Potosino de Investigación Científica y TecnológicaA.C.Camino a la Presa San José 2055C.P. 78216San Luis PotosíS.L.P.México.

Forest restora.ions conducted in semia.id, sea.ona.ly dry clima.es must dea. with the intense drought stress tha. a.fects tree seedlings during the dry sea.on. a.though this wa.er deficit is the most commonly invoked source of morta.ity for seedlings, severa. other environmenta. fa.tors ma. a.so preclude surviva. of tra.spla.ts. For insta.ce, it ha. been widely reported tha. excessive light reduces the efficiency of the photosynthetic a.pa.a.us, hence decrea.ing pla.t surviva., but most seedling tra.spla.ts in deforested a.ea. a.e conducted under these light conditions. This study is focused in determining whether excessive light a.fects the photosynthetic performa.ce a.d surviva. of Quercus coccolobifolia. a.Mexica. oa. species, when their seedlings a.e tra.spla.ted in semia.id deforested a.ea.. Further, this study tests the possibility of using a.tificia. sha.e shelters to improve the ecophysiologica. performa.ce a.d surviva. of seedlings. Oa. seedlings were tra.spla.ted under full sunlight conditions a.d benea.h a.tificia. sha.e shelters of two different colors： white a.d bla.k. To reduce wa.er stress, a.d hence isola.e the effects of light trea.ments, a.drip irriga.ion system wa. implemented a. ea.h experimenta. plot. Seedling surviva. wa. monitored weekly for 128 da.s a.d photosynthetic performa.ce wa. a.sessed by mea.uring chlorophyll fluorescence a. three opportunities during the experiment. Sun-exposed seedlings showed lower photosynthetic performa.ce a.d surviva. ra.es tha. those benea.h shelters of both colors. These results suggest tha. sunlight da.a.e ca. reduce seedling surviva. when they a.e tra.spla.ted in exposed sites, a.d tha. sha.e shelters ca. improve the success of forest restora.ion progra.s in semia.id clima.es.

关键词： chlorophyll fluorescence light stress photoinhibition reforesta.ion forest restora.ion