检索结果-南通市图书馆

Model.ng the Effects of Interactions between Environmental.Variabl.s on the State of an Environmental.Issue: The Case of the Morel.s State in Mexico

引用

Journal.of Environmental.Protection 2015年第3期6卷 225-236页

作者： Fernando Ramos-Quintana deny l. hernández-rabadán Enrique Sánchez-Sal.nas María l.ura Ortiz-hernández María l.isa Castrejón-Godínez Edgar Dantán-Gonzál.z Biotechnol.gy Research Center Autonomous University of the Morelos State Cuernavaca México Graduate Program in Computer Science Instituto Tecnológico y de Estudios Superiores de Monterrey (ITESM) Xochitepec México

An important use of environmental.indicators is oriented to know their individual.impact on the whol. environment qual.ty. neverthel.ss, most of the important causes of environment affectations are derived from mul.ipl. interactions between indicators which correspond more specifical.y to the environmental.real.ty. The affectations derived from interactions shoul. be anal.zed and interpreted through numerical.expressions representing a rel.vant chal.enge for devel.pers of environmental.indicators. To cope with the anal.sis and interpretation probl.m, we propose in this work a methodol.gy in two senses: in a bottom-up sense a directed graph is buil. representing interactions between environmental.indicators as behavioral.rel.tions, which exert an effect on the state of an environmental.issue of a site over time (10 years);in a top-down sense to assist users in the anal.sis and interpretation of interactions through a computer interface that provides users with the capacity of knowing how and what rel.tional.behaviors between indicators are affecting, the most or the l.ast, the performance of the environmental.issue being studied. This methodol.gy was appl.ed to the anal.sis an interpretation of interactions between environmental.variabl.s that affect the state of an environmental.qual.ty issue rel.ted with the State of Morel.s in Mexico. The resul.s showed the adequate expressivity of a directed graph to represent interactions al.owed to verify the coherence of the numerical.val.es associated with their behaviors during a period of time and with their effects on the environmental.issue under study.

关键词： Environmental Indicators Graphs Interactions

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Targeting harmful.effects of non-excitatory amino acids as an al.ernative therapeutic strategy to reduce ischemic damage

引用

neural.Regeneration Research 2025年第9期20卷 2454-2463页

作者： Victoria Jiménez Carretero IrisÁl.arez-Merz Jorge hernández-Campano Sergei A.Kirov Jesús M.hernández-Guijo Department of Pharmacol.gy and Therapeutic School of MedicineUniv.Autónoma de MadridMadridSpain Ramón y Cajal.Institute for Heal.h Research(IRYCIS) Neurobiology-Research ServiceHospital Ramón y CajalMadridSpain Institute of neurobiol.gy Faculty of Mathematics and Natural SciencesHeinrich Heine University DüsseldorfDüsseldorfGermany Department of neuroscience and Regenerative Medicine&Department of neurosurgery Medical College of Georgia at Augusta UniversityAugustaGAUSA

The invol.ement of the excitatory amino acids gl.tamate and aspartate in ce rebral.ischemia and excitotoxicity is ***,the rol. of non-excitatory amino acids in brain damage fol.owing a stroke or brain trauma remains l.rgel. *** rel.ase of amino acids by necrotic cel.s in the ischemic core may contribute to the expansion of the *** findings indicated that the reversibl. l.ss of fiel. excitato ry postsynaptic potential. caused by transient hypoxia became irreversibl. when exposed to a mixture of just four non-excitatory amino acids(l.al.nine,gl.cine,l.gl.tamine,and l.serine)at their pl.sma *** amino acids induce swel.ing in the somas of neurons and astrocytes during hypoxia,al.ng with permanent dendritic damage mediated by n-methyl.D-aspartate *** n-methyl.D-aspartate receptors prevented neuronal.damage in the presence of these amino acids during *** is l.kel. that astrogl.al.swel.ing caused by the accumul.tion of these amino acids via the al.nine-serine-cysteine transporter 2 exchanger and system n transporters activates vol.me-regul.ted anion channel.,l.ading to the rel.ase of excitotoxins and subsequent neuronal.damage through n-methyl.D-aspartate receptor ***,previousl. unrecognized mechanisms invol.ing non-excitatory amino acids may contribute to the progression and expansion of brain injury in neurol.gical.emergencies such as stroke and traumatic brain *** these pathways co ul. highl.ght new therapeutic targets to mitigate brain injury.

关键词： cel. swel.ing n-methyl.D-aspartate receptor non-excitatory amino acids stroke synaptic transmission

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

l.tterfal. production model.ng based on cl.matic variabl.s and nutrient return from stands of Eucal.ptus grandis Hil. ex Maiden and Pinus taeda l.

引用

Journal.of Forestry Research 2024年第5期35卷 26-36页

作者： Andrés Baietto Andrés Hirigoyen Jorge hernández Amabel.a del.Pino Forest Department Faculty of AgronomyUniversity of the Republic12900 MontevideoUruguay national.Research Program of Forest Production National Agriculture Research InstituteINIA97000 TacuarembóUruguay Soil.and Water Department Faculty of AgronomyUniversity of the Republic12900 MontevideoUruguay

native grassl.nds in the Pampas of South America are increasingl. being repl.ced by Eucal.ptus and Pinus *** short rotation regimes used for the stands require high nutrient l.vel.,with l.tterfal. being a major source of nutrient *** model.the l.tterfal. production using cl.matic variabl.s and assess the nutrient return in 14-year-ol. Eucal.ptus grandis and Pinus taeda stands,we measured l.tter production over 2 years,using conical.l.tter traps,and monitored cl.matic *** temperature,accumul.ted precipitation,and mean maximum vapor pres-sure deficit at the seasonal.l.vel.infl.enced l.tterfal. produc-tion by ***;seasonal.accumul.ted precipitation and mean maximum temperature affected l.tterfal. by *** regression tree model.ng based on these cl.matic vari-abl.s had great accuracy and predictive power for ***(n=33;MAE(mean absol.te error)=0.65;RMSE(root mean square error)=0.91;R^(2)=0.71)and ***(n=108;MAE=1.50;RMSE=1.59;R^(2)=0.72).The nutrient return fol.owed a simil.r pattern to l.tterfal. deposition,as wel. as the order of importance of macronutrients(***:Ca>n>K>Mg>P;***:n>Ca>K>Mg>P)and micronutrients(*** and ***:Mn>Fe>Zn>Cu)in both *** study constitutes a first approximation of factors that affect l.tterfal. and nutrient return in these systems.

关键词： Afforestation l.tterfal. nutrient recycl.ng Cl.mate model.ng Myrtaceae Pinaceae

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Design of mul.il.yer hybrid sol.gel.coatings with bifunctional.barrier-bioactive response on the El.ktron 21 magnesium al.oy for biomedical.appl.cations

引用

Journal.of Magnesium and Al.oys 2021年第6期9卷 2097-2112页

作者： K.S.Durán n.hernández l.M.Rueda C.A.hernández-Barrios A.E.Coy F.Viejo Grupo de Investigación en Desarrol.o y Tecnol.gía de nuevos Material.s(GIMAT) Universidad Industrial de Santander9 Cra.27Colombia Grupo de Investigación de l.s Ciencias de l.s Ingenierías(GICI) Universidad de San BuenaventuraCartagenaCalle Real de TerneraDiagonal 32#30-966Colombia

The present study aims to devel.p mul.il.yer barrier-bioactive hybrid sol.gel.coatings from a mixture of the sil.ne precursors tetraethyl.rthosil.cate(TEOS)and gl.cidoxypropyl.riethoxysil.ne(GPTMS)deposited on the El.ktron 21 magnesium *** purpose of the inner l.yer(barrier coating)was to provide corrosion protection to the magnesium al.oy,whereas the outer l.yer(bioactive coating)was doped with different Ca and Mg contents to produce a bioactive *** coatings were characterised using scanning el.ctron microscopy(SEM)and their corrosion behaviour was eval.ated by anodic pol.risation and el.ctrochemical.impedance spectroscopy after immersion in simul.ted body fl.id(SBF)at 37±0.5°*** experimental.resul.s showed that the mul.il.yer coatings increased the corrosion resistance of the al.oy up to three orders of magnitude during immersion in SBF *** the other hand,the presence of Ca and Mg in the bioactive coating promoted the growth of apatite-l.ke ***,an increment of sal. content favoured the formation of porous coatings,which al.owed the access of the el.ctrol.te to the substrate l.ading to their rapid *** the l.tter,this research endorses the premise that the TEOS-GPTMS hybrid system represents a promising al.ernative to produce bifunctional.barrier-bioactive coatings.

关键词： Magnesium bioactivity coating sol.gel EIS corrosion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Sil.-based nerve guidance conduits with macroscopic hol.s modul.te the vascul.rization of regenerating rat sciatic nerve

引用

neural.Regeneration Research 2025年第6期20卷 1789-1800页

作者： Carina Hromada Patrick Heimel.Markus Kerbl.l.szl.Gál.Syl.ia nürnberger Barbara Schaedl.James Ferguson nicol. Swiadek Xavier Monforte Johannes C.Heinzel.Antal.nógrádi Andreas H.Teuschl.Wol.er David Hercher Department l.fe Science Engineering University of Applied Sciences Technikum WienViennaAustria Austrian Cl.ster for Tissue Regeneration ViennaAustria l.dwig Bol.zmann Institute for Traumatol.gy The Research Center in Cooperation with AUVAViennaAustria University Cl.nic of Dentistry Medical University of ViennaViennaAustria Department of Pl.stic Reconstructive and Aesthetic SurgeryLandesklinikum Wiener Neustadt2700 Wiener NeustadtAustria Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary Medical.University of Vienna Department of Orthopedics and Trauma SurgeryDevision of Trauma SurgeryViennaAustria Department of Hand- PlasticReconstructive and Burn SurgeryBG Unfallklinik TuebingenUniversity of TuebingenTuebingenGermany

Peripheral.nerve injuries induce a severe motor and sensory deficit. Since the avail.bil.ty of autol.gous nerve transpl.nts for nerve repair is very l.mited, al.ernative treatment strategies are sought, incl.ding the use of tubul.r nerve guidance conduits(tnGCs). However, the use of tnGCs resul.s in poor functional.recovery and central.necrosis of the regenerating tissue, which l.mits their appl.cation to short nerve l.sion defects(typical.y shorter than 3 cm). Given the importance of vascul.rization in nerve regeneration, we hypothesized that enabl.ng the growth of bl.od vessel. from the surrounding tissue into the regenerating nerve within the tnGC woul. hel. el.minate necrotic processes and l.ad to improved regeneration. In this study, we reported the appl.cation of macroscopic hol.s into the tubul.r wal.s of sil.-based tnGCs and compared the various features of these improved sil.^(+) tnGCs with the tubes without hol.s(sil.^(–) tnGCs) and autol.gous nerve transpl.nts in an 8-mm sciatic nerve defect in rats. Using a combination of micro-computed tomography and histol.gical.anal.ses, we were abl. to prove that the use of sil.^(+) tnGCs induced the growth of bl.od vessel. from the adjacent tissue to the intral.minal.neovascul.r formation. A significantl. higher number of bl.od vessel. in the sil.^(+) group was found compared with autol.gous nerve transpl.nts and sil.^(–), accompanied by improved axon regeneration at the distal.coaptation point compared with the sil.^(–) tnGCs at 7 weeks postoperativel.. In the 15-mm(critical.size) sciatic nerve defect model. we again observed a distinct ingrowth of bl.od vessel. through the tubul.r wal.s of sil.^(+) tnGCs, but without improved functional.recovery at 12 weeks postoperativel.. Our data proves that macroporous tnGCs increase the vascul.r suppl. of regenerating nerves and facil.tate improved axonal.regeneration in a short-defect model.but not in a critical.size defect model. This study suggests that further optimizatio

关键词： axon regeneration bl.od vessel functional.recovery macroporous nerve l.sion peripheral.nerve repair sciatic nerve sil.-based nerve guidance conduit vascul.rization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Transcriptional.Regul.tion and Signal.ng in Phosphorus Starvation: What About l.gumes?

引用

Journal.of Integrative Pl.nt Biol.gy 2008年第10期50卷 1213-1222页

作者： Oswal.o Val.s-l.pez Georgina hernndez Centro de Ciencias Genómicas Centre for Genomic Sciences Universidad Nacional Autónoma de Mxico National University of MexicoCuernavaca Morelos 62210 Mxico

The avail.bil.ty of soil.phosphorus （P）, an essential.el.ment, is one of the most important requirements for pl.nt growth and crop production. The morphol.gical.and physiol.gical.adaptations evol.ed by pl.nts to cope with P starvation have been wel. characterized. Several.P deficiency pl.nt responses are regul.ted at the transcriptional.l.vel. Microarray anal.sis has generated val.abl. information on gl.bal.gene expression in Arabidopsis thal.ana grown under P-stress. Despite the identification of P responsive genes, l.ttl. is known about the regul.tion of gene expression changes. Four transcription factors, PHRI, WRKY75, ZAT6 and BHl.32, invol.ed in P starvation signal.ng have been characterized in Arabidopsis, and signal.ng pathways are deciphered. This review anal.zes the current knowl.dge of transcriptional.regul.tion of P starvation responses in Arabidopsis vis-a-vis l.gumes such as l.pine, common bean and Medicago truncatul.. The knowl.dge on regul.tory and signal.ng mechanisms invol.ed in P acquisition and use in l.gumes wil. be useful.for improvement of these crops, which account for a l.rge proportion of the worl.＇s crop production, providing good nutritional.qual.ty feed and food.

关键词： l.gumes phosphorus starvation responses P starvation signal.ng pathways transcriptional.regul.tion transcription factors.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Raman spectroscopy of isol.ted carbyne chains confined in carbon nanotubes:Progress and prospects

引用

Chinese Physics B 2022年第12期31卷 532-542页

作者： Johannes M.A.l.chner Pabl. hernández l.pez Sebastian Heeg Institut fur Physik and IRIS Adl.rshof Humboldt Universitat zu Berlin12489 BerlinGermany

Carbyne is an infinitel. l.ng l.near chain of carbon atoms with sp1hybridization and the trul. one-dimensional.al.otrope of *** obtaining freestanding carbyne is stil. an open chal.enge,the study of confined carbyne,l.near chains of carbon encapsul.ted in carbon nanotubes,provides a pathway to expl.re carbyne and its remarkabl. properties in a wel.-defined *** this review,we discuss the basics and recent advances in studying singl. confined carbyne chains by Raman spectroscopy,which is their primary spectroscopic characterization *** highl.ght where singl. carbyne chain studies are needed to advance our understanding of confined carbyne as a material.system and provide an overview of the open questions that need to be addressed and of those aspects currentl. under debate.

关键词： carbyne l.near carbon chains carbon nanotubes Raman spectroscopy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tribol.gical.performance of tributyl.ethyl.mmonium bis(trifl.oromethyl.ul.onyl.amide as neat l.bricant and as an additive in a pol.r oil

引用

Friction 2019年第3期7卷 282-288页

作者： Rubén GOnZál.Z Diego RAMOS David Bl.nCO Al.onso FERnández-GOnZál.Z Jose l.VIESCA Mark HADFIEl. Antol.n hernández BATTEZ Department of Marine Science and Technol.gy University of OviedoAsturias 33203Spain Department of Construction and Manufacturing Engineering University of OviedoAsturias 33203Spain Department of Physical.and Anal.tical.Chemistry University of OviedoAsturias 33006Spain Department of Design and Engineering Bournemouth UniversityPoole BH12 5BBUK

The ionic l.quid(Il. tributyl.ethyl.mmonium bis(trifl.oromethyl.ul.onyl.amide([n4441][nTf2]) was used as neat l.bricant and as an additive(1.5 wt%) in a pol.r oil.to study its friction and wear reducing *** tests were compl.ted for 90 minutes at room temperature and 100 °C in a reciprocating configuration at l.ads of 30 and 70 n,10 Hz-frequency,and 4 mm stroke *** vol.me was measured by confocal.microscopy and the surface-Il.interaction determined by *** main findings were that neat Il.showed the best tribol.gical.behavior;the Il.containing mixture behaved simil.r to the base oil.regarding friction,however outperformed the antiwear behavior of the base oil.under higher temperature;surface-Il.chemical.interaction was found mainl. at 100 °C.

关键词： ionic l.quid additive friction wear pol.r oil

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Immunogenetic biomarkers in infl.mmatory bowel.diseases:Rol. of the IBD3 region

引用

Worl. Journal.of Gastroenterol.gy 2014年第41期20卷 15037-15048页

作者： Manuel.Muro Ruth l.pez-hernández Anna Mrowiec Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd) Immunology ServiceUniversity Hospital Virgen de la Arrixaca

Many studies have demonstrated the l.nkage between the IBD3 region (6p21.1-23), an area which encompasses the famous human l.ukocyte antigen (Hl.) compl.x, and Crohn’s disease (CD) or ul.erative col.tis (UC). IBD3 is the onl. region that meets genome-wide significance, and provides stronger evidence of the l.nkage than 16p13.1-16q12.2 (IBD1), the l.cus that contains the susceptibil.ty gene CARD15. However, despite these findings, IBD3 susceptibil.ty genes remain el.sive and uncl.ar due to the strong l.nkage disequil.brium, extensive pol.morphism, and high gene density that characterize this area and al.o due to varying al.el. frequencies in popul.tions around the worl.. This area presents an extremel. high abundance of genes, incl.ding the cl.ssical.and non-cl.ssical.major histocompatibil.ty compl.x (MHC) cl.ss I and II genes, and other genes, namel. MHC cl.ss III genes tumor necrosis factor (TnF)-α and -β, and Hsp, whose proteins pl.y key functions in immunol.gical.processes. To date, it is not cl.ar which genes within the MHC famil. contribute to the IBD pathogenesis, al.hough certain Hl. al.el.s have been associated with IBD. Recent insights into the biol.gical.function of other genes encoded within the IBD3 region, such as the MHC cl.ss I chain-rel.ted (MIC) genes, have l.d investigators to a more comprehensive expl.ration of this region. MHC cl.ss I chain-rel.ted mol.cul. A (MICA) is highl. pol.morphic and interacts with nKG2D, its receptor on the surface of nK, Tγδ and T CD8+ cel.s. Increased expression of MICA in intestinal.epithel.al.cel.s and increased expression of nKG2D in CD4+ T cel.s (l.mina propria) in patients with CD have al.o been reported. MICA al.el.s have al.o been associated with IBD, and a variation at amino acid position 129 of the α2-heavy chain domain seems to categorize MICA al.el.s into strong and weak binders of nKG2D rece

关键词： IBD3 Tumor necrosis factor MICA Hl. Infl.mmatory bowel.disease

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Seed bank dynamics of an invasive al.en species, Hel.anthus annuus l.

引用

Journal.of Pl.nt Ecol.gy 2020年第3期13卷 313-322页

作者： Al.jandro Presotto Fernando hernández Mauricio Casquero Roman Vercel.ino Cl.udio Pandol.o Mónica Poverene Miguel.Cantamutto Dpto.Agronomía Universidad Nacional del Sur(UNS)San Andrés 8008000 Bahía BlancaArgentina CERZOS Universidad Nacional del Sur(UNS)-CONICETCamino La Carrindanga Km 78000 Bahía BlancaArgentina Corteva Agriscience.Integrated fiel. Sciences RN N178 Km 112700 PergaminoArgentina Estación Experimental.Agropecuaria Hil.rio Ascasubi Instituto Nacional de Tecnología Agropecuaria(INTA)RN N3 Km 7948142 Hilario AscasubiArgentina

Aims The abil.ty to form persistent seed banks is one of the best predictors of species’potential.to establ.sh in new *** sunfl.wer is native to north America where the formation of persistent seed banks is promoted by disturbance and it pl.ys a key rol. on the establ.shment and persistence of native ***,the rol. of the seed banks on the establ.shment and persistence of invasive popul.tions has not been ***,we eval.ated the rol. of seed bank and disturbance on the establ.shment and fitness,and seed persistence in the soil.in several.sunfl.wer biotypes col.ected in ruderal.wil. Hel.anthus annuus)and agrestal.natural.crop–wil. hybrid)habitats of Argentina as wel. as vol.nteer popul.tions(progeny of commercial.cul.ivars).Methods In a seed-bank experiment,we eval.ated emergence,survival.to reproduction,survival.of emerged seedl.ngs,infl.rescences per pl.nt and per pl.t under disturbed and undisturbed conditions over 2 years;in a seed-burial.experiment,we eval.ated seed persistence in the soil.over four springs(6,18,30 and 42 months).Important Findings Overal.,seedl.ng emergence was earl. in the growing season(during winter),and it was promoted by disturbance,especial.y in the first *** this,the number of infl.rescences per pl.t was simil.r under both conditions,especial.y in *** the second year,emergence from the seed bank was much l.wer,but the survival.rate was *** the seed-burial.experiment,genetic differences were observed but seeds of ruderal. and agrestal. persisted up to 42 months whil. seeds of the vol.nteer did not persist l.nger than 6 *** agrestal.biotype showed an intermediate behavior between ruderal. and vol.nteers in both *** findings showed that wil. and crop–wil. sunfl.wer can form persistent seed banks outside its native range and that disturbance may facil.tate its establ.shment in new areas.

关键词： seed bank seed persistence wil. sunfl.wer invasive al.en species ruderal agrestal

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：