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Effect of Senescence Reta.da.ts on the Qua.ity of Persia. Lime Fruits

Phyton-Interna.iona. Journa. of Experimenta. Bota.y 2024年第8期93卷 1805-1818页

作者： Ra.a.l a.iza.flores Ra.a.l a.briz-Cerva.tes Pedro Ca.ena.Iñiguez luis a.Gálvez-Ma.roquín Miguel a.Ca.o-Ga.cía Na.iona. Institute of Forestry Agriculture and Livestock Research(INIFAP)South Pacific Regional CenterSanto Domingo Barrio BajoVilla de EtlaOaxaca68200México Na.iona. Institute of Forestry Agriculture and Livestock Research(INIFAP)Zacatepec Research StationZacatepecMorelos62780México Na.iona. Institute of Forestry Agriculture and Livestock Research(INIFAP)Central Chiapas Research StationOcozocoautlaChis29140México Na.iona. Institute of Forestry Agriculture and Livestock Research(INIFAP)Oaxaca Central Valley Research StationSanto Domingo Barrio BajoVilla de EtlaOaxaca68200México

The objective of this study consisted of eva.ua.ing the effect of the a.plica.ion of chitosa.(Q),1-methylcyclopropene(1-MCP)under two controlled tempera.ures on some physica.,physiologica.,a.d chemica. pa.a.eters contributing to the qua.ity of Persia. lime Citrus la.ifolia.*** trea.ments were eva.ua.ed,resulting from the combina.ion of four senescence reta.da.t a.plica.ions(Q,1-MCP,1-MCP+Q,a.d without a.plica.ion)on fruits stored a. two tempera.ures(12/20℃.Epidermis color(luminosity,chroma.icity,a.d hue),fruit a.pea.a.ce,respira.ion,weight loss,tota. juice content,tota. soluble solids,a.d titra.a.le a.idity were registered during the *** results indica.e tha. the 1-MCP a.d Q combina.ion fa.ored fruit postha.vest qua.ity conditions such a. reducing respira.ion ra.e;ma.nta.ning fruit good a.pea.a.ce,turgidity,a.d brighter fruit chroma.icity;fruits trea.ed with chitosa. a.d stored a. 12℃,fa.ored tota. soluble *** the other ha.d,Va.ia.les such a. weight loss,juice content,a.idity,phenols,fla.onoids,a.tioxida.t a.tivity,a.d hue va.ues were fa.ored by a.12℃ storing tempera.ure rega.dless of the *** genera.,the use of modified a.mospheres,senescence reta.da.ts,a.d refrigera.ion a. postha.vest methods,ca. increa.e Persia. lime shelf life.

关键词： Citrus la.ifolia qua.ity conserva.ion orga.ic a.terna.ives

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a.socia.ion between Helicoba.ter pylori infection,misma.ch repa.r,HER2 a.d tumor-infiltra.ing lymphocytes in ga.tric ca.cer

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World Journa. of Ga.trointestina. Oncology 2024年第6期16卷 2487-2503页

作者： Ca.los a.Ca.ta.eda.Miluska.Ca.tillo luis a.Berna.e Joselyn Sa.chez Ma.teo Fa.sa. Ka.herine Tello Igna.io Iva. Wistuba.Iva. Cha.ez Pa.siuri Eloy Ruiz Juvena. Sa.chez Ferna.do Ba.reda.Da.iel Va.divia.Ya.ueline Ba.a. Mila.ros a.a.-Licha. Cla.dio Mengoa.Hugo Fuentes Pa.la.Montenegro Ebert Poquioma.Ra.l a.a.rista.Cla.dio J flores luis Ta.a Fa.ulty of Hea.th Sciences Universidad Cientifica del SurLima 15038Peru GECO PERU Grupo de Estudios Clinicos Oncologicos del PeruLima 15038Peru Depa.tment of Resea.ch Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Fa.ulty of Huma. Medicine Universidad Ricardo PalmaLima 15039Peru Depa.tment of Medicine Surgical Pathology&Cytopathology UnitUniversity of PaduaPadua 35121Italy Depa.tment of Tra.sla.iona. Molecula. Pa.hology The University of Texas MD Anderson Cancer CenterHoustonTX 77030United States Depa.tment of a.domina. Surgery Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Depa.tment of Pa.hology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Depa.tment of Medica. Specia.ties Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Depa.tment of Pa.hology Instituto Regional de Enfermedades Neoplasicas del NorteTrujillo 13001Peru Fa.ulty of Huma. Medicine Universidad Privada Antenor OrregoTrujillo 13008Peru Depa.tment of Surgery Instituto Regional de Enfermedades Neoplasicas del SurArequipa 04002Peru Depa.tment of Medica. Oncology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Depa.tment of Epidemiology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Unida. de Investiga.ión Básica.y Tra.la.iona. Oncosalud-AUNALima 15038Peru Fa.ulty of Medicine Universidad San Martin de PorresLima 15008Peru

Ba.KGROUND The influence of Helicoba.ter-pylori(***)infection a.d the cha.a.teristics of ga.tric ca.cer(GC)on tumor-infiltra.ing lymphocyte(TIL)levels ha. not been extensively *** of infiltra.ing-immune-cell subtypes a. well a. surviva. is necessa.y to obta.n comprehensive *** To determine the ra.es of deficient misma.ch-repa.r(dMMR),HER2-sta.us a.d *** infection a.d their a.socia.ion with TIL levels in *** Sa.ples from 503 resected GC tumors were included a.d TIL levels were eva.ua.ed following the interna.iona.-TILs-working-group recommenda.ions with a.sessment of the intra.umora.(IT),stroma.(ST)a.d inva.ive-border(IB)*** density of CD3,CD8 a.d CD163 immune cells,a.d dMMR a.d HER2-sta.us were determined by immunohistochemistry(IHC).*** infection wa. eva.ua.ed by routine histology a.d qua.tita.ive PCR(qPCR)in a.subset of *** dMMR wa. found in 34.4%,HER2+in 5%a.d ***-positive in 55.7%of *** IT-TIL wa. a.socia.ed with gra.e-3(P=0.038),while ST-TIL with gra.e-1(Pa.-histology(Pa.d no-recurrence(P=0.003).dMMR wa. a.socia.ed with high TIL levels in the ST(P=0.019)a.d IB(P=0.01)compa.tments,a.d STCD3(P=0.049)a.d ST-CD8(P=0.05)***2-wa. a.socia.ed with high IT-CD8(P=0.009).*** wa. a.socia.ed with high IT-TIL levels(P=0.009)when a.sessed by routine-histology,a.d with high TIL levels in the 3 compa.tments(P=0.002-0.047)a.d CD8 density in the IT a.d ST compa.tments(P=0.001)when a.sessed by qPCR.a.longer overa.l surviva. wa. a.socia.ed with low IT-CD163(P=0.003)a.d CD8/CD3(P=0.001 in IT a.d P=0.002 in ST)a.d high IT-CD3(P=0.021),ST-CD3(P=0.003)a.d CD3/CD163(P=0.002).CONCLUSION TIL levels were rela.ed to dMMR a.d *** CD8/CD3 a.d high CD163/CD3 were a.socia.ed with lower recurrence a.d longer surviva..

关键词： Lymphocytes Ma.ropha.es Ga.tric ca.cer Helicoba.ter pylori HER2 Misma.ch repa.r

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From liver to hormones:The endocrine consequences of cirrhosis

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World Journa. of Ga.troenterology 2024年第9期30卷 1073-1095页

作者： Jua. Edua.do Quiroz-a.da.e Elma. Rola.do Ga.a.ra.Osorio Ma.ía.del Ca.men Dura.d-Vásquez Lucia.a.del Pila. Ra.a.l-Robles Jhea. Ga.riel Gonzáles-Yovera.Ma.ía.a.eja.dra.Quispe-flores luis a.berto Concepción-Urtea.a.a.eja.dro Román-González José Pa.-Iba.ra.Ma.cio José Concepción-Za.a.eta Non-communica.le Disea.es Endocrinology Research LineHospital de Apoyo ChepénChepén 13871Peru Depa.tment of Endocrinology Hospital Víctor Lazarte EchegarayTrujillo 13006Peru Depa.tment of Endocrinology Clínica Javier PradoLima 15046Peru Depa.tment of Ga.troenterology Hospital Nacional Guillermo Almenara IrigoyénLima 15018Peru Depa.tment of Endocrinology Hospital de Emergencias GrauLima 15001Peru Interna. Medicine Hospital Regional Docente de TrujilloTrujillo 13011Peru Depa.tment of Endocrinology Hospital Universitario de San Vicente FundaciónMedellin 050010Colombia Interna. Medicine Universidad de AntioquiaMedellín 050010Colombia School of Medicine Universidad Nacional Mayor de San MarcosLima 15081Peru Depa.tment of Endocrinology Hospital Nacional Edgardo Rebagliati MartinsLima 15072Peru Ca.rera.de Medicina.Huma.a Universidad Científica del SurLima 15067Peru

Hepa.ocrinology explores the intrica.e rela.ionship between liver function a.d the endocrine *** liver disea.es such a. liver cirrhosis ca. ca.se endocrine disorders due to toxin a.cumula.ion a.d protein synthesis *** its importa.ce,a.sessing endocrine issues in cirrhotic pa.ients is frequently *** a.ticle provides a.comprehensive review of the epidemiology,pa.hophysiology,dia.nosis,a.d trea.ment of endocrine disturba.ces in liver *** review wa. conducted using the PubMed/Medline,EMBa.E,a.d Scielo da.a.a.es,encompa.sing 172 *** cirrhosis is a.socia.ed with endocrine disturba.ces,including dia.etes,hypoglycemia.sa.copenia.thyroid dysfunction,hypogona.otropic hypogona.ism,bone disea.e,a.rena. insufficiency,growth hormone dysfunction,a.d seconda.y *** optima. tools for dia.nosing dia.etes a.d detecting hypoglycemia.a.e the ora. glucose tolera.ce test a.d continuous glucose monitoring system,*** ca. be a.sessed through ima.ing a.d functiona. tests,while other endocrine disorders a.e eva.ua.ed using hormona. a.sa.s a.d ima.ing *** options include metformin,gluca.on-like peptide-1 a.a.ogs,sodium-glucose co-tra.sporter-2 inhibitors,a.d insulin,which a.e effective a.d sa.e for dia.etes *** sta.da.ds a.e followed for ma.a.ing hypoglycemia.a.d hormone repla.ement thera.y is often necessa.y for other endocrine *** tra.spla.ta.ion ca. a.dress some of these problems.

关键词： Dia.etes mellitus Hypoglycemia Thyroid disea.es Hypogona.ism Meta.olic bone disea.es Liver cirrhosis

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a.omorphine effects on the hippoca.pus

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Neura. Regenera.ion Resea.ch 2018年第12期13卷 2064-2066页

作者： luis Enrique a.royo-Ga.cía.a.tonio Rodríguez-Moreno Gonza.o flores La.ora.orio de Neuropsiquia.ria Instituto de Fisiologia Benemerita Universidad Autenoma de Puebla Puebla Mexico La.ora.orio de Neurociencia.Celula. y Pla.ticida. Universidad Pablo de Olavide Sevilla Spain

a.omorphine is a.non-specific dopa.ine receptor a.onist tha. ha. been used in the trea.ment of some disea.es a.d menta. disorders. Its use ha. pa.ticula.ly well documented in Pa.kinson＇s disea.e（PD）. The dopa.inergic a.onists like a.omorphine a.e rela.ed to oxida.ive processes tha. could induce cell da.a.e a.d the functiona. impa.rment of some structures in the bra.n. However, most informa.ion a.out a.omorphine in litera.ure is focused on the improvement of the motor problems cha.a.teristic of PD, but little is known a.out the effects on cognitive beha.iors a.d bra.n structures indirectly rela.ed to motor function. The presence of dopa.inergic receptors in the hippoca.pus ha. recently been discovered, in connection with cognitive beha.iors like lea.ning a.d memory, these receptors a.e needed in neurona. pla.ticity. There ha. been a.growing interest to know if this structure could be compromised by the effect of a.omorphine a.d elucida.e if pa.t of the cognitive impa.rment present in the PD is due to the effect of a.omorphine. In this mini-review, we summa.ized how a.omorphine ha. been used since its crea.ion, we discuss the la.est informa.ion a.out its effect on the hippoca.pus a.d a.so the future perspectives to fully understa.d the effects of this compound.

关键词： dopa.ine receptor a.omorphine hippoca.pus lea.ning a.d memory pla.ticity dendritic length oxida.ive stress Pa.kinson's disea.e

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Biocompa.ibility a.d electrochemica. eva.ua.ion of ZrO_(2) thin films deposited by rea.tive ma.netron sputtering on MgZnCa.a.loy

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Journa. of Ma.nesium a.d a.loys 2021年第6期9卷 2019-2038页

作者： Benja.ín Millán-Ra.os Da.iela.Morquecho-Ma.ín Pha.dra.Silva.Bermudez Da.id Ra.írez-Ortega.Osma.y Depa.los-Rivera.Julieta.Ga.cía.López Ma.ia.a.Fernández-Lizárra.a.JoséVictoria.hernández Dietma. Letzig a.gelia.a.ma.uer-flores Sa.dra.E.Rodil Instituto de Investiga.iones en Ma.eria.es Universidad Nacional Autónoma de MéxicoCDMX 04510Mexico Posgra.o en Ciencia.e Ingeniería.de Ma.eria.es Universidad Nacional Autónoma de MéxicoCDMX 04510Mexico Unida. de Ingeniería.de Tejidos Terapia Celular y Medicina RegenerativaInstituto Nacional de Rehabilitación Luis Guillermo IbarraCDMX 14389Mexico Posgra.o en Ciencia. Médica. Odontológicas y de la SaludUniversidad Nacional Autónoma de MéxicoCDMX 04510Mexico Instituto de Ciencia. a.lica.a. y Tecnologia Universidad Nacional Autónoma de MéxicoCDMX 04510Mexico Posgra.o de Doctora.o en Ciencia. en Biomedicina.y Biotecnología.Molecula. Escuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalCDMX 11340Mexico Institute of Ma.eria. a.d Process Design Helmholtz-Zentrum GeesthachtMax-Planck-Strasse 1Geesthacht 21502Germany Ma.nesium Innova.ion Centre Ma.IC Helmholtz-Zentrum GeesthachtMax-Planck-Strasse 1Geesthacht 21502Germany La.ora.orio de Biointerfa.es Facultad de OdontologíaDivisión de Estudios de Posgrado e InvestigaciónUniversidad Nacional Autónoma de MéxicoCDMX 04510Mexico

Biodegra.a.le ma.nesium a.loys a.e promising ca.dida.es for tempora.y fra.ture fixa.ion devices in orthopedics;nevertheless,its fa.t degra.a.ion ra.e a. the initia. sta.e a.ter impla.ta.ion rema.ns a. one of the ma.n cha.lenges to be ***_(2)-ba.ed coa.ings to reduce the degra.a.ion ra.e of the Mg-impla.ts a.e a. a.tra.tive solution since they show high biocompa.ibility a.d *** this work,the degra.a.ion,cytotoxicity,a.d a.tiba.teria. performa.ce of ZrO_(2)thin films deposited by ma.netron sputtering on a.Mg-Zn-Ca.a.loy wa. ***-term degra.a.ion of ZrO_(2)-coa.ed a.d uncoa.ed sa.ples wa. a.sessed considering electrochemica. techniques a.d H_(2)evolution(ga. chroma.ogra.hy).a.ditiona.ly,long term degra.a.ion wa. a.sessed by ma.s-loss *** results showed tha. a.380 nm ZrO_(2)coa.ing reduces the degra.a.ion ra.e a.d H_(2)evolution of the a.loy during the initia. 3 da.s a.ter immersion but a.lows the degra.a.ion of the ba.e a.loy for the *** ZrO_(2)coa.ing does not compromise the biocompa.ibility of the a.loy a.d permits better cell a.hesion a.d prolifera.ion of mesenchyma. stem cells directly on its surfa.e,in compa.ison to the ba.e ***,the ZrO_(2)coa.ing prevents the a.hesion a.d biofilm forma.ion of ***.

关键词： Zirconium dioxide Ma.netron sputtering Short-term degra.a.ion H_(2)evolution

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Effect of Ultra.iolet Ra.ia.ion on Hsp70 Protein Expression in Ha.a. Cells

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World Journa. of Nuclea. Science a.d Technology 2024年第1期14卷 59-71页

作者： Sergio Hugo Sánchez Rodríguez Jesús Rodríguez Vergil Ma.uel Vena.cio Muñoz Juárez Kevin Sa.d Ra.írez Dávila.luis Ma.tín Ga.cía.Ortiz Germán flores Cortés Luz Elena.Vida.es Rodríguez Jesús a.rián López Da.id a.eja.dro Ga.cía.López La.ora.orio de Biología.Celula. y Neurobiología Unidad Académica de Ciencias Biológicas Universidad Autónoma de Zacatecas Zacatecas México La.oa.orio de Ba.teria. y Hongos Fila.entosos Unidad Académica de Ciencias Biológicas Universidad Autónoma de Zacatecas Zacatecas México La.ora.orio de MicroRNa. Unidad Académica de Ciencias Biológicas Universidad Autónoma de Zacatecas Zacatecas México

Ultra.iolet ra.ia.ion by its wa.elength is divided into: UVa. UVB a.d UVC. Only UVa.a.d UVB ma.a.e to penetra.e the ozone la.er, but due to a.thropologica. a.tivities, a.l of them a.e ca.a.le of intera.ting with huma.s to a.grea.er or lesser extent, a.d ca. genera.e a.verse effects such a. cellula. stress when intera.ting with intra.a.d extra.ellula. biomolecules. The skin is the first orga. in conta.t with UV ra.ia.ion, a.d the stress it genera.es ca. be a.a.yzed by the expression of a.bioindica.or of cellula. da.a.e such a. Hsp70. Therefore, the objective of the project wa.: to determine the effect of UVa. UVB a.d UVC ra.ia.ion on Ha.a. epithelia. cells, by a.a.yzing the expression of Hsp70. Ma.eria.s a.d methods: Ha.a. cells were cultured in vitro, which were irra.ia.ed with UVa. UVB a.d UVC light a. different doses, to subsequently determine the degree of Hsp70 expression by Immunodetection by Pa.E-SDS a.d Western Blot. Results: Ba.a. expression of Hsp70 wa. observed in no irra.ia.ed Ha.a. cells. When Ha.a. cells were irra.ia.ed with UVa. UVB, UVC, a. increa.e in this Hsp70 protein wa. observed. With UVa. a.higher degree of expression wa. observed a. a.time of 30 minutes of irra.ia.ion. With UVB the highest expression shifted to a.time of 20 minutes. With UVC, overexpression wa. observed a.ter 10 minutes. Conclusion: UV ra.ia.ion genera.es cellula. stress on Ha.a. cells, eva.ua.ed by the stress bioindica.or Hsp70. a.cording to the wa.elength of UV ra.ia.ion, those tha. ha.e a.shorter wa.elength ha.e a.grea.er potentia. for cellula. da.a.e, such a. UVC.

关键词： Ultra.iolet a.Light (UVa. Ultra.iolet B Light (UVB) Ultra.iolet C Light (UVC) Hea. Shock Protein 70 (Hsp70) Ha.a.

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Intera.tion Between Heficoverpa.zea.Da.a.e with Corncob Disea.es on Genetica.ly Modified Corn in Sina.oa. México

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Journa. of Life Sciences 2014年第4期8卷 329-334页

作者： luis a. a.uirre Uribe Gusta.o a. Fría. Trevino a.ustín hernández Juárez Ma.ia.o flores Da.ila.Emesto Cerna.Cha.ez Jerónimo La.deros flores Yisa.M. Ochoa.Fuentes Pla.t Hea.th Depa.tment Universidad A utónoma Agraria Antonio Narro Buenavista Saltillo 25315 Coahuila México

GM （genetica.ly modified） corn with the Cryla., mCry3a.a.d Vip3a.20 protein of Bt （Ba.illus thuringiensis） a.d its respective isoline a. control with a.d without chemica. control for corn ea.worm were used in this resea.ch. Fusa.ium corncob da.a.e wa. lower on GM corn with （12.5%） a.d without （25.7%） insecticide trea.ment a. compa.ed with the isoline tha. ha. 48.3% a.d 83.1% of da.a.ed corncobs with a.d without chemica. control, respectively. Corn smut cob da.a.e wa. a.so lower on GM corn with （3.2%） a.d without （6.3%） insect control compa.ed with 15.5% a.d 49.7% da.a.e with a.d without insecticide trea.ment, respectively. Fusa.ium sp. corncob rot wa. a.so lower on GM corn with 5.7% a.d 9.5% wherea. a.24.6% a.d 63% rot wa. observed on the isoline with a.d without insecticide control, respectively. Ustila.o ma.dis severity wa. a.so lower on Bt corn finding 0.07% a.d 0.25% da.a.e on trea.ments with a.d without insect control a. compa.ed with the isoline tha. showed a. 11.6% a.d a.41.4% smut rot with a.d without insecticide trea.ment, respectively. The a.thors conclude tha. GM corn resista.t to Helicoverpa.zea.prevents da.a.e by the pest, elimina.ing the entra.ce pa.hwa. for Fusa.ium sp. a.d Ustila.o ma.dis.

关键词： Ba.illus thuringiensis tra.sgenic Fusa.ium Ustila.o ma.dis mycotoxins corn smut.

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Solvent- a.d Ca.a.yst-Free Microwa.e-a.sisted Deca.boxyla.ion of Ma.onic a.id Deriva.ives

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Green a.d Susta.na.le Chemistry 2017年第4期7卷 270-280页

作者： Fa.ny a.a.eli Ca.rera.Rivera.luis Ga.riel hernández-Vázquez Pa.ricia.flores-Sánchez Ma.ia.Durán-Ga.ván Ja.me Esca.a.te The Center of Chemica. Resea.ch UAEM Cuernavaca México SIGNa.Civa. S. a. de C. V. Jiutepec México

It ha. been found tha. microwa.e a.sisted deca.boxyla.ion of ma.onic a.id deriva.ives ca. be a.hieved under solvent-free a.d ca.a.yst free conditions. This new method produces the corresponding ca.boxylic a.id in a.pure ma.ner a.d with a.high yield in a.very short rea.tion time: 3 - 10 min. In genera. terms, the condition under which this rea.tion is ca.ried out a.celera.es the deca.boxyla.ion significa.tly of a.series of disubstituted ma.onic a.id deriva.ives, a.d ma.es this new process efficient, ea.y a.d environmenta.ly friendly.

关键词： Microwa.e Deca.boxyla.ion Ma.onic a.id Deriva.ives Solvent-Free Ca.a.yst-Free Green Chemistry

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Isola.ion a.d Cha.a.teriza.ion of Mercury Resista.t Trichoderma.Stra.ns from Soil with High Levels of Mercury a.d Its Effects on a.a.idopsis tha.ia.a.Mercury Upta.e

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a.va.ces in Microbiology 2018年第7期8卷 600-613页

作者： Joséluis hernández-flores JoséGera.do Berna. Melo a.drés Cruz hernández Miguel a.Ra.os López Ca.los Sa.da.a.Gutiérrez Sergio Romero Gomez Victor Pérez Moreno Rosa.P.Ca.villo Medina.JoséHumberto Va.enzuela.Soto Sergio Pa.heco hernández George H.Jones Sergio Ca.a. flores Jua. Ca.pos-Guillen La.ora.orio de Biosegurida. y a.álisis de Riesgo Departamento de Ingeniería Genética de PlantasCentro de Investigación y de Estudios Avanzados del IPNIrapuatoGto.México Fa.ulta. de Química Universidad Autónoma de QuerétaroCerro de las Campanas s/nQuerétaroQro.México Escuela.de a.ronomía Universidad De La Salle Bajíocampus Campestre.LeónGto.México Fa.ulta. de Ciencia. Na.ura.es Universidad Autónoma de QuerétaroAv.De las Ciencias S/NQuerétaroQro.México Centro de Investiga.ión en Química.a.lica.a Blvd.Enrique Reyna Hermosillo No.140SaltilloCoahuilaMéxico Depa.tment of Biology Emory UniversityAtlantaGeorgiaUSA IPICYT División de Biología Molecular.Camino a la presa San JoséNo.2055Colonia Lomas 4a sección.C.P.San Luis PotosíMexico

Tra.itiona. mining a.tivities a.e usua.ly correla.ed with high levels of soil pollution, which is a.ma.or environmenta. concern. Extensive mining a.tivities ha.e ta.en pla.e in the Sa. Joa.uin region in the Sta.e of Queréta.o, México resulting in high levels of mercury soil pollution (up to 1532 ± 300 mg/kg). We isola.ed mercury-resista.t funga. stra.ns from the Sa. Joa.uin region soils a.d identified them through morphologic cha.a.teristics a.d ITS rDNa.region sequence a.a.ysis. We determined tha. fungi isola.ed belong to the genus Trichoderma. a.l the isola.es selected showed the a.ility to ca.a.yze the vola.iliza.ion of Hg. For a.r sa.pling, a. a.tive sa.pling device wa. constructed a.d using a.id KMnO4 a. a. a.sorbent, the concentra.ion of mercury in solution wa. determined through the cold va.or a.omic a.sorption method. The results show mercury vola.iliza.ion from the funga. species a.sa., with a.ma.imum of 213.04 ± 32.6 μg/m3 while mycelium a.cumula.ion ra.ged from less tha. 17.5 ± 2.9 to 20.0 ± 3.4 μg/g. The funga. isola.es were a.so eva.ua.ed for their a.ility to reduce mercury upta.e in a.a.idopsis tha.ia.a. These observa.ions suggest the utility of Trichoderma.for the mobiliza.ion of mercury in those conta.ina.ed soils.

关键词： Vola.iliza.ion Mercury Trichoderma Soil Bioremedia.ion

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Surfa.ta.t-free synthesis of meta.lic bismuth spheres by microwa.e-a.sisted solvotherma. a.proa.h a. a.function of the power level

引用

Frontiers of Ma.eria.s Science 2016年第4期10卷 394-404页

作者： Miria. ESTRa.a.flores Pa.ricia.Sa.TIa.O Ja.INTO Ca.men M. REZa.Sa. GERMa. luis RENDON Va.QUEZ Ra.l BORJa.URBY Nicola. Ca.ETa.O Ca.TRO Instituto de Investiga.iones en Ma.eria.es Circuito Exterior S/N Zona de Institutos Ciudad Universitaria C.P. 04510 Mexico D.F. Mexico Instituto de Fisica Circuito de la Investigaci6n Cientffica Edificio Marcos MoshinskyLaboratorio de Materiales Nanoestructurados Ciudad Universitaria C.P. 04510 Mexico D.F. Mexico Escuela.Superior de Ingenierfa.Qufmica.e Industria. Extra.tiva. Unidad Profesional Adolfo L6pez Mateos Edif. Z-5 2do. Piso Instituto Politecnico Nacional C.P. 07738 Mexico D.F. Mexico Centro de Na.ociencia. y Micro y Na.otecnologfa.. Instituto Politecnico Na.iona. Av. Luis Enrique Erro S/NUnidad Profesional Adolfo Lopez Mateos Zacatenco Delegaci6n Gustavo A. Madero C.P. 07738 Mexico D.F. Mexico

In the present work, the synthesis of micro- a.d na.o-sized spheres of meta.lic bismuth by microwa.e-a.sisted solvotherma. method is reported. The synthesis method wa. ca.ried out a. different power levels a.d a. a.unique frequency of microwa.e irra.ia.ion. The sphere sizes were controlled by the microwa.e power level a.d the concentra.ion of dissolved precursor. Structura. a.d morphologica. cha.a.teriza.ion wa. performed by SEM, HRTEM, EELS a.d XRD. The results demonstra.ed tha. rhombohedra. zero va.ent Bi spheres were synthesized a.ter microwa.e ra.ia.ion a. 600 a.d 1200 W. However, if the power level is decrea.ed to 120 W, a.monoclinic pha.e of Bi203 is obta.ned with a.fla.e-like morphology. In compa.ison with a.conventiona. hydrotherma. process, the microwa.e-a.sisted solvotherma. a.proa.h provides ma.y a.va.ta.es such a. shorter rea.tion time, optimum ma.ipula.ion of morphologies a.d provides a.specific chemica. pha.e a.d a.oids the mixture of structura. pha.es a.d morphologies which is essentia. for further a.plica.ions such a. drug delivery or functiona.iza.ion with orga.ic ma.eria.s, tha.ks to its biocompa.ibility.

关键词： microwa.e oven power level meta.lic bismuth spherica. structures mecha.ism of forma.ion electron energy loss spectroscopy (EELS)

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