Activity and Stability of Dispersed Multi Metallic Pt-based Catalysts for CO Tolerance in Proton Exchange Membrane Fuel Cell Anodes.

abstract：:The objective of this study was to evaluate the effect of controlled atmosphere (CA) on quality preservation of 'Laetitia' plums, mainly on internal breakdown, in order to determine the best CA storage conditions. Two experiments were carried out one in 2010, and another in 2011. In 2010, besides cold storage (CS; 21....

journal_title：Anais da Academia Brasileira de Ciencias

authors： Steffens CA,do Amarante CV,Alves EO,Brackmann A

更新日期：2014-03-01 00:00:00

abstract：:The amino acid sequence of the "double-headed" trypsin and chymotrypsin inhibitor (BTCI), purified from the cowpea Vigna unguiculata (L.) Walp. cv "Seridó" was determined in our laboratory. Tryptic and chymotryptic peptides were sequenced by the Edman-Gray and Edman-Chang N-terminal manual method as well as the carbox...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Morhy L,Ventura MM

更新日期：1987-01-01 00:00:00

abstract：:Over the past two decades, the record of South American unenlagiine dromaeosaurids was substantially increased both in quantity as well as in quality of specimens. Here is presented a summary review of the South American record for these theropods.Unenlagia comahuensis, Unenlagia paynemili, and Neuquenraptor argentinu...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Gianechini FA,Apesteguia S

更新日期：2011-03-01 00:00:00

abstract：:The in vitro metabolism of a widespread natural product, trachyloban-19-oic acid (1), by the fungal species Mucor plumbeus was studied in a sucrose-yeast liquid medium. Two products were isolated, and their structures were determined by spectroscopic means as 7β-hydroxytrachyloban-19-oic acid (5) and trachyloban-19-O-...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Santos GFD,Takahashi JA

更新日期：2017-01-01 00:00:00

abstract：:Annulated thienopyrimidine derivatives attracted big interest of the scientific community due to their broad spectrum of biological activities among which are the inhibition of phosphodiesterase, antiproliferative and antimicrobial activities. As a continuation of our studies on the synthesis and biological activity o...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Sirakanyan SN,Geronikaki A,Spinelli D,Hakobyan EK,Kartsev VG,Petrou A,Hovakimyan AA

更新日期：2018-04-23 00:00:00

abstract：:We describe a dentary of a new titanosaur sauropod, Baalsaurus mansillai, gen. et sp. nov. from the Late Cretaceous of Patagonia, Argentina. The material comes from the Portezuelo Formation, Neuquén Group. Titanosaur sauropods lower jaws are scarce and only nine taxa with dentaries have been described. There are two t...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Calvo JO,Riga BG

更新日期：2019-01-01 00:00:00

abstract：:D-pinitol is one of the major inositol found in plants and studies suggest its potential hypoglycemic and hypolipidemic actions in diabetic rodents. Here, we investigated the actions of D-pinitol on adiposity, and in lipid and glycemic homeostasis in monosodium glutamate (MSG)-obese mice. Swiss mice received daily sub...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Silva JÚnior JAD,Silva ACVFD,Figueiredo LS,Araujo TR,Freitas IN,Carneiro EM,Ribeiro ES,Ribeiro RA

更新日期：2020-11-20 00:00:00

abstract：:The intercropping is an important cultural practice commonly used in pest management. It is based on the principle that increased plant diversity in the agro-ecosystem can lead to reductions of pest populations in the crop. The current study aimed to assess the impact the colored fiber cotton-cowpea intercropped syste...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Fernandes FS,Godoy WAC,Ramalho FS,Malaquias JB,Santos BDB

更新日期：2018-01-01 00:00:00

abstract：:Cariniana rubra Miers (Lecythidaceae), popularly known as "jequitibá-vermelho'', is a large Brazilian tree whose bark is used in infusion and decoction for the treatment of inflammatory conditions. This study aims to assess the anti-inflammatory, antinociceptive, and antipyretic effects of Cariniana rubra methanolic s...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Santos EN,Lima JC,Noldin VF,Cechinel-Filho V,Rao VS,Lima EF,Schmeda-Hirschmann G,Sousa PT Jr,Martins DT

更新日期：2011-06-01 00:00:00

abstract：:The Commelina erecta L. (C. erecta) also known as erva-de-santa-luzia is reported by local population to have medical properties against some pathological conditions. In this study, two extracts of C. erecta leaves (aqueous and ethanolic) were phytochemically analysed and evaluated for their in-vitro antioxidant activ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Otsuka FAM,Santos RB,Chaves LF,Santos RS,Chaves Filho AB,Miyamoto S,Matos HR

更新日期：2020-01-01 00:00:00

abstract：:Japanese Islands are covered with weathered volcanic rocks and soils. Terraced rice field are located in green-tuff areas which are very fertile but where landslides occur associated to strong earthquakes. The Xray diffraction and X-ray fluorescence analyses of the soils in landslide area identified predominant smecti...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Tazaki K

更新日期：2006-12-01 00:00:00

abstract：:This study investigated the dynamics of cyanobacteria in two deep, eutrophic reservoirs in a semi-arid region of Brazil during periods of stratification and destratification. Four collections were carried out at each reservoir at two depths at three-month intervals. The following abiotic variables were analyzed: water...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Dantas EW,Moura AN,Bittencourt-Oliveira Mdo C

更新日期：2011-12-01 00:00:00

abstract：:The degradation kinetics of vitamin C in different citrus juice types (tangerine, grapefruit, orange and lime) were investigated during four hours storage at temperatures of 4 and 25°C under different storage conditions in terms of light and oxygen presence. The loss of vitamin C at each sample followed the first-orde...

journal_title：Anais da Academia Brasileira de Ciencias

authors： NakilcioĞlu-TaŞ E,ÖtleŞ S

更新日期：2020-06-12 00:00:00

abstract：:Eimeriosis is caused by a protozoan parasite of the genus Eimeria and infection affecting most domestic animal species. The aim of this research was to comprehend the impact of selenium nanoparticles (SeNPs) on eimeriosis induced by Eimeria papillata in mouse jejunum, and how they work as antioxidants and anti-apoptot...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Alkhudhayri A,Al-Shaebi EM,Qasem MAA,Murshed M,Mares MM,Al-Quraishy S,Dkhil MA

更新日期：2020-06-03 00:00:00

abstract：:We establish a method for giving lower bounds for the fundamental tone of elliptic operators in divergence form in terms of the divergence of vector fields. We then apply this method to the Lr operator associated to immersed hypersurfaces with locally bounded (r + 1)-th mean curvature Hr + 1 of the space forms Nn+ 1(c...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Bessa GP,Jorge LP,Lima BP,Montenegro JF

更新日期：2006-09-01 00:00:00

abstract：:Plutella xylostella L. is one of the main agents to cause damages to plants of Brassica genus, provoking negative impacts in cultures. The use of botanical extracts in plants protection has been related in literature, however, their use in the species analyzed in this study is not yet reported. We assessed the effect ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Couto IF,Fuchs ML,Pereira FF,Mauad M,Scalon SP,Dresch DM,Mussury RM

更新日期：2016-01-01 00:00:00

abstract：:The use of sensors and optical fibers for monitoring structures is continuously growing. Strains, displacements, accelerations, temperatures are just a few of the monitoring possibilities. In the case of dam structures, concrete face rockfill dams constitute a type of structures where the monitoring of water infiltrat...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Marconcin LR,Machado RD,Lacerda LA,Aufleger M

更新日期：2018-04-01 00:00:00

abstract：:We used skeletochronology to compare age, size, reproductive parameters and growth patterns of two related, anuran amphibians from Northern Argentina: Leptodactylus bufonius (n=69) and L. latinasus (n=56), in order to better understand their coexistence in syntopy. Previous studies showed that the two species overlap ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Marangoni F,Courtis A,Piñeiro JM,Ingaramo MDR,Cajade R,Stănescu F

更新日期：2019-07-29 00:00:00

abstract：:Epigeic coleopteran species are linked by complex trophic webs and implicated in several ecosystem services for agriculture. Although there are reports of ground-dwelling Coleopterans inhabiting main extensive agroecosystems, their assemblages in horticultural crops in Argentina have been little explored. We examined ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Rouaux J,Cabrera N,MartÍnez AS,Posse MC,Luna MG

更新日期：2020-01-01 00:00:00

abstract：:Anticarsia gemmatalis Hübner, 1818 (Lepidoptera) is a major pest of soybean in the Brazil. It is known that the reduction of proteolytic activity by the ingestion of protease inhibitors reduces digestion and larval development of the insects. Control via inhibition of the digestive enzymes necessitates deeper knowledg...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Patarroyo-Vargas AM,Cordeiro G,Silva CRD,Silva CRD,Mendonça EG,Visôtto LE,Zanuncio JC,Campos WG,Oliveira MGA

更新日期：2020-01-01 00:00:00

abstract：:A total of 40 specimens of the teleost fish Gobioides grahamae Palmer & Wheeler, 1955 were obtained from the municipality of Salvaterra on Marajó Island in the Brazilian state of Pará. Their livers were removed and processed for light microscopy. Overall, 90% of the specimens presented some degree of steatosis of the ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Videira M,Velasco M,Matos P,Clemente SC,Sanches O,Santos P,Matos E

更新日期：2014-09-01 00:00:00

abstract：:The present study describes Tereancistrum flabellum n. sp. (Dactylogyridae, Ancyrocephalinae) from the gills of the anostomid fishes Leporinus friderici, Leporinus amblyrhynchus and Leporinus elongatus from two freshwater ecosystems in the south east of Brazil. This new species is mainly characterized by the morpholog...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Zago AC,Yamada FH,Franceschini L,Bongiovani MF,Yamada POF,Silva RJD

更新日期：2017-04-01 00:00:00

abstract：:The effects of food restriction (FR) on the morphoquantitative aspects of the wall and myenteric neurons of the proximal colon in adult rats were analysed. FR was imposed by duplication of the experimental brood size in relation to the control brood during lactation. The FR group received a 50% reduction of food from ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Schoffen JP,Vicentini FA,Marcelino CG,Araújo EJ,Pedrosa MM,Natali MR

更新日期：2014-12-01 00:00:00

abstract：:Miconazole is reduced at mercury electrode above pH 6 involving organometallic compound formation, responsible for an anomalous polarographic behavior. The electrodic process presents a large contribution of the adsorption effects. The drug can be determined by cathodic stripping voltammetry from 8.0 x 10(-8) to 1, 5 ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Pereira FC,Stradiotto NR,Zanoni MV

更新日期：2002-09-01 00:00:00

abstract：:Piper aduncum found naturally in the Amazon and southeastern Brazil, is known for its secondary metabolites that have activity on insects. Anticarsia gemmatalis and Spodoptera frugiperda are among the major insect pests associated with agricultural production. This research evaluated the biological activity of hexane,...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Lucena DC,Bertholdo-Vargas LR,Silva WC,Machado AF,Lopes TS,Moura S,Barros NM

更新日期：2017-07-01 00:00:00

abstract：:Toxoplasmosis is the most common cause of infectious uveitis in Brazil, with a higher frequency in the South of the country. We have collected samples from porcine tongue and diaphragm obtained in both large and small abattoirs and used molecular biological technique to determine the prevalence of infection and RFLP a...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Belfort-Neto R,Nussenblatt V,Rizzo L,Muccioli C,Silveira C,Nussenblatt R,Khan A,Sibley LD,Belfort R Jr

更新日期：2007-03-01 00:00:00

abstract：:Cesium atomic beam clocks have been the workhorse for many demanding applications in science and technology for the past four decades. Tests of the fundamental laws of physics and the search for minute changes in fundamental constants, the synchronization of telecommunication networks, and realization of the satellite...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Ahmed M,Magalhães DV,Bebeachibuli A,Müller ST,Alves RF,Ortega TA,Weiner J,Bagnato VS

更新日期：2008-06-01 00:00:00

abstract：:Agapanthus (Agapanthaceae) has 10 species described. However, most taxonomists differ respect to this number because the great phenotypic plasticity of the species. The cytogenetic has been an important tool to aid the plant taxon identification, and to date, all taxa of Agapanthus L'Héritier studied cytologically, pr...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Reis AC,Franco AL,Campos VR,Souza FR,Zorzatto C,Viccini LF,Sousa SM

更新日期：2016-01-01 00:00:00

abstract：:Fifty-five adult Dicrocoelium rileyi Macy, 1931 parasitizing Tadarida brasiliensis (Geoffroy, 1824) from Durango, Nuevo Leon, Puebla, Zacatecas and Mexico State were morphologically described and morphometrically analyzed. To evaluate the degree of variation among populations from the five localities, 27 morphometric ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Falcón-Ordaz J,Octavio-Aguilar P,Estrella-Cruz I

更新日期：2019-11-25 00:00:00

abstract：:Rotifers have often been used as indicators of sudden changes in physical and chemical features of the aquatic environment. Such features vary greatly during flood pulse events in small lakes connected to major floodplains. However, few are the studies that investigate the consequences of the flood pulse in rotifer sp...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Nova CC,Lopes VG,Souza LC,Kozlowsky-Suzuki B,Pereira TA,Branco CW

更新日期：2014-09-01 00:00:00