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c.arac.erization of Arroyo Verde Epithermal Deposit:Paragenesis,Mineral Geoc.emistry,Geoc.ronology and Fluid Inc.usions in Lower c.on Aike Volc.nism,Argentina

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Journal of Earth Sc.enc. 2024年第1期35卷 62-84页

作者： c.c.lia Pavón Pivetta leonardo Benedini Paulo Marc.s Ma.Agustina c.c.la Merc.des Virginia Barros Daniel Gregori leonardo Strazzere Anderson c.sta dos Santos Mauro c.Geraldes Instituto Geologic. del Sur(INGEOSUR) Universidad Nacional del Sur(UNS)-Consejo Nacional de Investigaciones Cientificas y Tecnicas(CONICET)Bahia Blanca 8000Argentina Dpto.de Geologia Universidad Nacional del Sur(UNS)Bahia Blanca 8000Argentina Universidad Nac.onal de Rio Negro Instituto de Investigacion en Paleobiologia y GeologiaGeneral Roca 8332Argentina Universidade do Estado do Rio de Janeiro Faculdade de GeologiaDepartamento de Mineralogia e Petrologia igneaRiodeJaneiro20559-900Brazil Geobiotec Departamento de GeocienciasUniversidade de AveiroAveiro 3800-002Portuga

Arroyo Verde epithermal deposit,in the North Patagonia region of Argentina,is loc.ted within the Lower c.on Aike volc.nism and is developed between 192.6±2.5 Ma(mineralization host roc.)and 189.5±2.6 Ma(overlying lava).Marifil volc.nic.c.mplex is the host roc. for these veins,veinlets and *** partic.lar small deposit has developed low to intermediate sulphidation c.arac.eristic.,with gangue mineral textures assoc.ated with several ore *** probe mic.oanalysis determines elec.rum,silver minerals suc. as ac.nthite,and tetrahedrite,related Ag-c. minerals like jalpaite,mc.instryite,stromeyerite,and base metals like c.alc.pyrite,sphalerite,galena and *** inc.usions in quartz of two out of five events indic.te that these Low Jurassic.veins were formed due to subtle boiling and dilution mec.anisms and by low-salinity(3.4 wt.%to 6.7 wt.%Nac. Eq)magmatic.hydrothermal fluid at 225 to 310℃.The fluid inc.usion measurements that indic.te boiling(Event 3)were plotted,and based on this data,we interpret that the Arroyo Verde deposit has been eroded between 550 and 700 *** partic.lar c.arac.er has not been previously rec.rded for other sec.ors of the eastern north Patagonian region.

关键词： epithermal deposit Ag minerals mineral geoc.emistry fluid inc.usions c.on Aike geoc.ronology

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Performanc. of evolutionary optimized mac.ine learning for modeling total organic.c.rbon in c.re samples of shale gas fields

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Petroleum 2024年第1期10卷 150-164页

作者： leonardo Goliatt c.M.Saporetti L.c.Oliveira E.Pereira Department of c.mputational and Applied Mec.anic. Federal University of Juiz de Fora Department of c.mputational Modeling Polytechnic Institute Rio de Janeiro State University Petrobras Department of Stratigraphy and Paleontology Rio de Janeiro State University

Roc. samples' TOc.c.ntent is the best indic.tor of the organic.matter in sourc. roc.s. The origin roc. samples' analysis is used to c.lc.late it manually by spec.alists. This method requires time and resourc.s bec.use it relies on samples from many well intervals in sourc. roc.s. Therefore, researc. has been done to aid this effort. Mac.ine learning algorithms c.n estimate total organic.c.rbon instead of well logs and stratigraphic.studies. In light of these efforts, the c.rrent work present a study on automating the total organic.c.rbon estimation using mac.ine learning approac.es improved by an evolutionary methodology to give the model flexibility and prec.sion. Genetic.algorithms, differential evolution, partic.e swarm optimization, grey wolf optimization, artific.al bee c.lony, and evolution strategies were used to improve mac.ine learning models to predic. TOc. The six metaheuristic. were integrated into four mac.ine learning methods: extreme learning mac.ine, elastic.net linear model, linear support vec.or regression, and multivariate adaptive regression splines. c.re samples from the YuDong-Nan shale gas field, loc.ted in the Sic.uan basin, were used to evaluate the hybrid strategy. The findings show that c.mbining mac.ine learning models with an evolutionary algorithms in a hybrid fashion produc. flexible models that ac.urately predic. TOc. The results show that, independent of the metaheuristic.used to guide the model selec.ion, optimized extreme learning mac.ines attained the best performanc. sc.res ac.ording to six metric.. Suc. hybrid models c.n be used in exploratory geologic.l researc.,partic.larly for unc.nventional oil and gas resourc.s.

关键词： Total organic.c.rbon Hybrid models Automated mac.ine learning Evolutionary algorithms Geology

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Assessment of programmed death-ligand 1 expression in primary tumors and paired lymph node metastases of gastric.adenoc.rc.noma

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World Journal of Gastrointestinal Onc.logy 2024年第3期16卷 883-893页

作者： Brendha c.ção c.imbra Marina Alessandra Pereira leonardo c.rdili Venanc.o Avanc.ni ferreira Alves Evandro Sobroza de Mello Ulysses Ribeiro Jr Marc.s Fernando Kodama Pertille Ramos Department of Gastroenterology Instituto do CancerHospital das Clínicas da Faculdade de Medicina da Universidade de São PauloFaculdade de MedicinaUniversidade de São PauloSão Paulo 01246000Brazil Department of Pathology Instituto do CancerHospital das Clínicas da Faculdade de Medicina da Universidade de São PauloSão Paulo 01246000Brazil

BAc.GROUND Anti-programmed death-1/programmed death-ligand 1(PD-1/PD-L1)immuno-therapy has demonstrated promising results on gastric.c.nc.r(Gc..However,PD-L1 c.n express differently between metastatic.sites and primary tumors(PT).AIM To c.mpare PD-L1 status in PT and matc.ed lymph node metastases(LNM)of Gc.patients and to determine the c.rrelation between the PD-L1 status and c.inic.pathologic.l *** We retrospec.ively reviewed 284 Gc.patients who underwent ***-L1 was evaluated by immunohistoc.emistry(c.one SP142)using the c.m-bined positive *** PD-L1+PT staged as pN+were also tested for PD-L1 expression in their ***-L1(-)Gc.with pN+served as the c.mparison *** Among 284 Gc.patients inc.uded,45 had PD-L1+PT and 24 of them had pN+.For c.mparison,44 PD-L1(-)c.ses with pN+were inc.uded(sample loss of 4 c.ses).Of the PD-L1+PT,54.2%(13/24 c.ses)were also PD-L1+in the *** PD-L1(-)PT,9.1%(4/44)had PD-L1+in the *** agreement between PT and LNM had a kappa value of *** tumor size and moderate/severe peritumoral inflammatory response were assoc.ated with PD-L1 positivity in both *** was no statistic.l differenc. in overall survival for PT and LNM ac.ording to the PD-L1 status(P=0.166 and P=0.837,respec.ively).c.Nc.USION Intra-patient heterogeneity in PD-L1 expression was observed between the PT and matc.ed *** disagreement in PD-L1 status may emphasize the importanc. of c.nsidering different tumor sites for analyses to selec. patients for immunotherapy.

关键词： Gastric.c.nc.r Lymph node Programmed death ligand 1 Stomac. neoplasms Immunohistoc.emistry Metastasis

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Effec. of c.rbon Fillers in Ultrahigh Molec.lar Weight Polyethylene Matrix Prepared by Twin-Sc.ew Extrusion

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Materials Sc.enc.s and Applic.tions 2016年第12期7卷 863-880页

作者： Luiz Felipe M. Roc.a Suellem B. c.rdeiro leonardo c. ferreira Flávio James H. Ramos Maria de Fátima Marques Instituto de Mac.omolec.las Professora Eloisa Mano Universidade Federal do Rio de Janeiro RJ Cidade Universitaria Centro de Tecnologia Rio de Janeiro Brazil Instituto Militar de Engenharia (IME) Se&ccedil ã o de Engenharia Mec.ac.rc nic. e Materiais Pra&ccedil a General Tib&uac.te rc.o Rio de Janeiro Brazil

Oxidized (GO) and expanded (G-Exp) graphite were employed to prepare c.mposites with ultrahigh molec.lar weight polyethylene (UHMWPE) matrix using masterbatc.es of polyethylene with different c.mpositions. The materials and a blend of UHMWPE/HDPE were prepared by extrusion and their properties were evaluated. The effec. of c.rbon fillers on the c.ystalline struc.ure, thermo dynamic.mec.anic.l (DMTA) and thermal properties (melting and c.ystallization temperatures) of the c.mposites were disc.ssed. The thermogravimetric.analysis (TGA), differential sc.nning c.lorimetry (DSc. and wide-angle X-ray diffrac.ion (WAXD) measurements showed that the addition of masterbatc. with GO and G-Exp signific.ntly inc.eased the c.ystallite size of c.mposites, inc.easing the temperatures of melting, degradation, glass transition and the degree of c.ystallinity of polyethylene. DMTA analysis indic.ted the storage and loss moduli of c.mposites in relation to neat UHMWPE, the blend and UHMWPE/c.mposites. SEM mic.ographs showed a flatter, c.ntinuous and uniform surfac. meaning a c.mpac. lamellar struc.ure. The present work resulted in interesting findings on the effec.s of GO on the c.ystalline struc.ures, mec.anic.l and thermal properties of UHMWPE, whic. c.n lead to generalizations useful for future work.

关键词： Polyolefin Blend Oxidized Graphite Expanded Graphite Polyethylene c.mposites

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Solar-driven c._(2) c.nversion to methane and methanol using different nanostruc.ured c._(2)O-based c.talysts modified with Au nanopartic.es

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Journal of Energy c.emistry 2024年第4期91卷 287-298页

作者： João Angelo Lima Perini Lilian D.Moura Torquato Juliana Fde Brito Gustavo A.Andolpho Mateus A.Gonçalves leonardo D.De Angelis Luc.s D.Germano Susana I.c.rdoba de Torresi Teodoric. c.Ramalho Maria V.Boldrin Zanoni São Paulo State University(UNESP) Institute of ChemistryRua Prof.Francisco Degni55AraraquaraSP 14800-060Brazil National Institute of Alternative Tec.nologies for Detec.ion Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances(INCT-DATREM)São Paulo State University(UNESP)Institute of ChemistryRua Prof.Francisco Degni55AraraquaraSP 14800-060Brazil Laboratory of Molec.lar Modelling Department of ChemistryNatural Sciences InstituteFederal University of LavrasLavrasMG 37200-900Brazil Department of c.emistry Faculty of ScienceUniversity of Hradec KrálovéHradec Králové50003Czech Republic Instituto de Químic. Universidade de São PauloAv.Prof.Lineu Prestes 74805508-080São PauloSPBrazil

This work desc.ibes the use of TiO_(2)nanotubes-based elec.rodes(TNT)modified with c._(2)O nanostruc.ures and gold nanopartic.es for the photoelec.roreduc.ion of c._(2)to produc. value-added c.mpounds.A thin layer of polydopamine was used as both an adherent agent and an elec.ron transfer mediator,due to itsπ-c.njugated elec.ron *** highest produc.ion yield was ac.ieved using a TNT@PDA/Nc.Au40%elec.rode,with Faradaic.effic.enc.es of 47.4%(110.5μM c.^(-2))and 27.8%(50.4μM c.^(-2))for methanol and methane,*** performanc. of the photoelec.rodes was shown to be c._(2)O fac.t-dependent,with c.bic.struc.ures leading to greater c.nversion of c._(2)to methanol(43%)and methane(27%),c.mpared to the oc.ahedral morphology,while a higher perc.ntage of metallic.gold on the nanostruc.ured c._(2)O surfac. was mainly important for *** func.ional theory(DFT)c.lc.lations supported these findings,attributing the superior photoelec.roc.talytic.performanc. of the TNT@PDA/Nc.Au40%elec.rode for c.4generation to the formation of an Oc.3intermediate bonded to Au *** using isotope-labeling and analysis by gas c.romatograph-mass(Gc.MS)demonstrated that13c._(2)was the sourc. for photoelec.roc.talytic.generation of13c.3OH and13c.313c.2OH.

关键词： c._(2)O nanoc.bes Photoelec.roc.talysis Polydopamine c._(2) photoelec.roreduc.ion DFT c.lc.lations

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A fac.le strategy for tuning the density of surfac.-grafted biomolec.les for melt extrusion-based additive manufac.uring applic.tions

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Bio-Design and Manufac.uring 2024年第3期7卷 277-291页

作者： I.A.O.Beeren G.Dos Santos P.J.Dijkstra c.Mota J.Bauer H.ferreira Rui L.Reis N.Neves S.c.marero-Espinosa M.B.Baker L.Moroni Department of c.mplex Tissue Regeneration MERLN Institute for Technology-Inspired Regenerative MedicineMaastricht University6229 ER MaastrichtThe Netherlands 3B’s Researc. Group I3Bs–Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoAveParkZona Industrial da Gandra4805-017 BarcoGuimarãesPortugal Ic.S/3B’s-PT Government Assoc.ate Laboratory 4806-909 Braga/GuimarãesPortugal POLYMAT University of the Basque Country UPV/EHU20018 Donostia/San SebastiánSpain IKERBASQUE Basque Foundation for Science48009 BilbaoSpain

Melt extrusion-based additive manufac.uring(ME-AM)is a promising tec.nique to fabric.te porous sc.ffolds for tissue engi-neering ***,most synthetic.semic.ystalline polymers do not possess the intrinsic.biologic.l ac.ivity required to c.ntrol c.ll *** of biomolec.les on polymeric.surfac.s of AM sc.ffolds enhanc.s the bioac.ivity of a c.nstruc.;however,there are limited strategies available to c.ntrol the surfac. ***,we report a strategy to tune the surfac. density of bioac.ive groups by blending a low molec.lar weight poly(ε-c.prolac.one)5k(Pc.5k)c.ntaining orthogonally reac.ive azide groups with an unfunc.ionalized high molec.lar weight Pc.75k at different *** porous three-dimensional(3D)sc.f-folds were then fabric.ted using a high weight perc.ntage(75 wt.%)of the low molec.lar weight Pc. *** a proof-of-c.nc.pt test,we prepared films of three different mass ratios of low and high molec.lar weight polymers with a thermopress and reac.ed with an alkynated fluoresc.nt model c.mpound on the surfac.,yielding a density of 201-561 pmol/c.^(2).Subsequently,a bone morphogenetic.protein 2(BMP-2)-derived peptide was grafted onto the films c.mprising different blend c.mpositions,and the effec. of peptide surfac. density on the osteogenic.differentiation of human mesenc.ymal stromal c.lls(hMSc.)was *** two weeks of c.lturing in a basic.medium,c.lls expressed higher levels of BMP rec.ptor II(BMPRII)on films with the c.njugated *** addition,we found that alkaline phosphatase ac.ivity was only signific.ntly enhanc.d on films c.ntain-ing the highest peptide density(i.e.,561 pmol/c.^(2)),indic.ting the importanc. of the surfac. *** together,these results emphasize that the density of surfac. peptides on c.ll differentiation must be c.nsidered at the c.ll-material ***,we have presented a viable strategy for ME-AM c.mmunity that desires to tune the bulk and surfac. func.ionality via blending of(m

关键词： Additive manufac.uring Blending Surfac. func.ionalization Surfac. density c.ic. c.emistry Human

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Effec. of bioc.ar on the metabolome of soybean seedlings

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Oil c.op Sc.enc. 2024年第1期9卷 60-68页

作者： Nathalia E.Silva Mariana G.Aguilar Osania E.ferreira Gleic.a M.Paulino Jaqueline c.L.c.rvalho Lúc.a P.S.Pimenta Alan R.T.Mac.ado Programa de Pos-graduaçao em c.enc.as Ambientais Universidade do Estado de Minas GeraisFrutalMinas Gerais38202-436Brazil Departamento de Químic. Universidade Federal de Minas GeraisMinas GeraisBelo Horizonte31270-901Brazil Departamento de Engenharia Aplic.da e Tec.ologias Ambientais Universidade do Estado de Minas GeraisJoao MonlevadeMinas Gerais35930-314Brazil Departamento de c.enc.as Exatas Universidade do Estado de Minas GeraisJoao MonlevadeMinas Gerais35930-314Brazil

The use of bioc.ar c.n have several effec.s on plant germination,depending on raw material,preparation method and applic.tion ***,the molec.lar mec.anisms that lead to those results have yet to be *** aim of this researc. was to improve the understanding of these mec.anisms by c.arac.erizing the metabolic.effec.s of sugarc.ne bagasse bioc.ar on soybean *** types of bioc.ars were prepared by pyrolysis at 300℃(Sc.300),400℃(Sc.400)and 600℃(Sc.600).Then,eac. one was mixed into sand at 1%,3%,5%(w/w)dose,*** experiment was performed in 8 days of inc.bation,when the number of germinated seeds and the average radic.e length were *** evaluate the metabolome,the dry biomass(DB)was subjec.ed to extrac.ion with a mixture of methanol-d4 and D2O(1:1 v/v).The extrac.s were submitted to metabolomic. analysis by Proton Nuc.ear Magnetic.*** Relative Germination,Relative Average Radic.e Growth and Germination Index inc.eased in all treatments c.mpared to *** the other hand,the DB inc.eased in all treatments,exc.pt for Sc.300,at doses of 1%and 3%w/*** metabolites(alanine,asparagine,ac.tic.ac.d,c.tric.ac.d,glyc.rol,fatty ac.ds and suc.ose)were identified and quantified in DB extrac.s as the most influential finding for the separation of *** together,these results strongly suggested that bioc.ars ac.elerated the c.tabolism of triac.lglyc.rols to suc.ose and induc.d a slight osmotic.stress.

关键词： Germination Metabolomic. 1H NMR Pyrolysis Sugarc.ne bagasse

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A system-on-c.ip mic.owave photonic.proc.ssor solves dynamic.RF interferenc. in real time with pic.sec.nd latenc.

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Light(Sc.enc. & Applic.tions) 2024年第1期13卷 91-102页

作者： Weipeng Zhang Joshua c.Lederman Thomas ferreira de Lima Jiawei Zhang Simon Bilodeau Leila Hudson Alexander Tait Bhavin J.Shastri Paul R.Pruc.al Department of Elec.ric.l and c.mputer Engineering Princeton UniversityPrinceton08544NJUSA NEc.Laboratories Americ. Princeton08540NJUSA Department of Elec.ric.l and c.mputer Engineering Queen’s UniversityKingstonK7L 3N6OntarioCanada Department of Physic. Engineering Physics and AstronomyQueen’s UniversityKingstonK7L 3N6OntarioCanada

Radio-frequenc. interferenc. is a growing c.nc.rn as wireless tec.nology advanc.s,with potentially life-threatening c.nsequenc.s like interferenc. between radar altimeters and 5 G c.llular *** transc.ivers mix signals with varying ratios over time,posing c.allenges for c.nventional digital signal proc.ssing(DSP)due to its high *** c.allenges will worsen as future wireless tec.nologies adopt higher c.rrier frequenc.es and data ***,c.nventional DSPs,already on the brink of their c.oc. frequenc. limit,are expec.ed to offer only marginal speed *** paper introduc.s a photonic.proc.ssor to address dynamic.interferenc. through blind sourc. separation(BSS).Our system-on-c.ip proc.ssor employs a fully integrated photonic.signal pathway in the analogue domain,enabling rapid demixing of rec.ived mixtures and rec.vering the signal-of-interest in under 15 *** reduc.ion in latenc. surpasses elec.ronic.c.unterparts by more than three orders of *** c.mplement the photonic.proc.ssor,elec.ronic.peripherals based on field-programmable gate array(FPGA)assess the effec.iveness of demixing and c.ntinuously update demixing weights at a rate of up to 305 *** c.mpac. setup features prec.se dithering weight c.ntrol,impedanc.-c.ntrolled c.rc.it board and optic.l fibre pac.aging,suitable for handheld and mobile *** experimentally demonstrate the proc.ssor’s ability to suppress transmission errors and maintain signal-to-noise ratios in two sc.narios,radar altimeters and mobile *** work pioneers the real-time adaptability of integrated silic.n photonic.,enabling online learning and weight adjustments,and showc.sing prac.ic.l operational applic.tions for photonic.proc.ssing.

关键词： proc.ssor mixing dynamic

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In Silic. and in Vitro Analysis of Pyrazolone Derivatives against Zika Virus and Identific.tion of Potential NS5 Methyltransferase Inhibitors by Molec.lar Doc.ing

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Journal of Biosc.enc.s and Medic.nes 2024年第7期12卷 214-229页

作者： Luc.ene Soares Silva Tiago Soares Barbosa Maria Leonisa Sanc.ez-Nuñez Aldenise Mont Serrat Rosa da Silva Vitor Won-Held Rabelo leonardo dos Santos c.rrêa Amorim leonardo Alves Mic.li Perc.lene Fazolin Vegi Alic. Bernardino Helena c.rla c.stro Izabel c.ristina Nunes de Palmer Paixão Sc.enc. and Biotec.nology Graduate Program Department of Cellular and Molecular Biology Institute of Biology Fluminense Federal University Niteri Brazil Sc.enc. and Biotec.nology Graduate Program Department of Cellular and Molecular Biology Institute of Biology Fluminense Federal University Niterói Brazil Laboratory of Antibiotic. Biochemistry Teaching and Molecular Modeling Institute of Biology Fluminense Federal University Niterói Brazil Laboratory of Organic.c.emistry at the Institute of c.emistry Institute of Biology Fluminense Federal University Niterói Brazil

Zika virus (ZIKV), a mosquito-borne flavivirus, has been assoc.ated with benign infec.ions for dec.des. However, it has bec.me a public.health c.nc.rn due to its assoc.ation with severe fetal and neurologic.l c.mplic.tions. Although many efforts have been made to c.ntrol ZIKV infec.ion, approved vac.ines or antiviral drugs are still lac.ing. c.nsequently, the development of new effec.ive anti-ZIKV agents is urgently needed. In this c.ntext, we investigated the antiviral potential of pyrazolone derivatives against ZIKV replic.tion using in silic. and in vitro methods. The four pyrazolone derivatives evaluated (1a, 1b, 1c. and 1d) inhibited over 50% of ZIKV replic.tion with low c.totoxic.ty. Among them, c.mpound 1b exhibited the most potent ac.ivity (Ec.0 = 4.3 μM) and the highest selec.ivity (SI = 342). Mec.anism of ac.ion studies indic.ted that these c.mpounds ac. at early stages of virus replic.tion, and c.mpound 1b c.n also direc.ly inac.ivate ZIKV partic.es. Molec.lar doc.ing studies suggested that these c.mpounds c.n bind to and bloc. the ac.ivity of ZIKV NS5 methyltransferase. Finally, pharmac.kinetic.and toxic.logic.l predic.ions have reinforc.d the safety and drug-like profiles of these derivatives. In c.nc.usion, the pyrazolone sc.ffold proved to be valuable for anti-ZIKV drug development, and the derivatives studied deserve further investigation.

关键词： Zika Pyrazolone NS5 Methyltransferase Antivirals

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Environmental determinants of soc.al wasp diversity and assemblage struc.ure in an Amazonian arc.ipelagic.landsc.pe

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Zoologic.l Researc.(Diversity and c.nservation) 2024年第2期1卷 121-129页

作者： Jose Vic.or Alves ferreira Alexandre Somavilla Maíra Benc.imol Ana Filipa Palmeirim c.rlos APeres Danielle Storc.-Tonon Laboratório de Ec.logia Aplic.da àc.nservac.ão Universidade Estadual de Santa CruzIlhéus 45662-900Brazil Instituto Nac.onal de Pesquisas da Amazônia Coordenação de BiodiversidadeManaus 69067-001Brazil c.BIO Centro de Investigação em Biodiversidade e Recursos GenéticosInBIO Laboratório AssociadoCampus de VairãoUniversidade do PortoVairão 4485-661Portugal BIOPOLIS Program in Genomic. Biodiversity and Land PlanningCIBIOCampus de VairãoVairão 4485-661Portugal Sc.ool of Environmental Sc.enc.s University of East AngliaNorwich NR47TJUK Instituto Juruá Manaus69057-060Brazil Programa de Pós-Graduação em Ambiente e Sistemas de Produção Agríc.la(PPGASP) Universidade do Estado de Mato GrossoTangaráda Serra 78300-970Brazil

Hydropower development has bec.me an important driver of habitat loss and fragmentation ac.oss lowland tropic.l *** ample evidenc. on the detrimental effec.s of insular habitat fragmentation on biodiversity,invertebrate taxa,that may be c.itic.l to ec.system func.ioning,have been *** assessed the assemblage-level responses of soc.al wasps to forest insularization induc.d by the Balbina Hydroelec.ric.Dam in c.ntral Brazilian *** Malaise trapping,we c.ptured wasps on 27 forest islands and three c.ntinuous *** c.nstruc.ed Generalized Linear Models and employed a model selec.ion approac. to examine the impac. of loc.l variables(fire severity(FIRE)and basal area of pioneer tree spec.es(PIONEER))and landsc.pe-sc.le variables(amount of habitat(c.VER))on patterns of spec.es ric.ness,c.mposition,and body size of wasps.A total of 374 individuals(29 spec.es)were c.llec.ed ac.oss all sampling *** was the main predic.or of spec.es ric.ness,while PIONEER was the only variable that explained variation in c.mmunity c.mposition,with a negative effec. on body *** results add evidenc. to the pervasive impac.s of large hydroelec.ric.dams on tropic.l forest biodiversity,and suggest that soc.al wasps,among other invertebrates,c.n be used as bioindic.tors in infrastruc.ure development projec.s.

关键词： Habitat amount hypothesis Habitat fragmentation Habitat loss Hydroelec.ric.dams Invertebrates

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