A new species and new records of Leptogium (Ach.) Gray (Collemataceae, Peltigerales) from Rio Grande do Sul State with an identification key for the genus.

abstract：:The objective was to evaluate the influence of calving and postpartum characteristics, measured in different genetic predominance, on the postpartum rebreeding. Were evaluated 437 partum from cows that received feeding management consisting of a forage base of the native field and the mating season consisted of 90 day...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Joner G,Alves Filho DC,Brondani IL,Borchate D,Klein JL,Domingues CC,Rodrigues LS,Machado DS

更新日期：2018-08-01 00:00:00

abstract：:Coffee is one of the most important Brazilian agricultural commodities exported, and Minas Gerais and Espírito Santo States are the main coffee producers. Scale insects are important coffee pests, and 73 species of Cerococcidae (3), Coccidae (18), Diaspididae (6), Eriococcidae (1), Ortheziidae (3), Pseudococcidae (21)...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Fornazier MJ,Martins DS,Willink MCG,Pirovani VD,Ferreira PSF,Zanuncio JC

更新日期：2017-10-01 00:00:00

abstract：:Mangroves function as a natural coastline protection for erosion and inundation, providing important environmental services. Due to their geographical distribution at the continent-ocean interface, the mangrove habitat may suffer heavy impacts from global climate change, maximized by local human activities occurring i...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Godoy MD,de Lacerda LD

更新日期：2015-04-01 00:00:00

abstract：:In the present work, we report the synthesis and characterization of five (4-alkylalmino-4'-fluoro)-diphenyl sulphones, four of which have not been described before. In a preliminary evaluation of their biological activity, these products showed no effect on several Gram-positive and Gram-negative bacteria and yeasts....

journal_title：Anais da Academia Brasileira de Ciencias

authors： de Sousa Júnior PT,Miller J,Giesbrecht AM

更新日期：1996-01-01 00:00:00

abstract：:Leaves of Psidium guajava L. (guava) have been widely used in the popular way for prevention and treatment of various diseases. Thus, the objective of this study was to evaluate the inhibitory potential of leaves aqueous extract from three cultivars of P. guajava (Pedro Sato, Paluma and Século XXI) on α-amylase, α-gly...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Simão AA,Marques TR,Marcussi S,Corrêa AD

更新日期：2017-01-01 00:00:00

abstract：:Seagrass beds are used by juvenile fishes in different ways, generally as nursery sites, shelter from predators, reducing competition and increasing availability of food resources, thus establishing a relationship of connectivity with other ecosystems. In the present study, the community structure of the ichthyofauna ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Pereira PH,Ferreira BP,Rezende SM

更新日期：2010-09-01 00:00:00

abstract：:We propose a new four-parameter lifetime model, called the extended log-logistic distribution, to generalize the two-parameter log-logistic model. The new model is quite flexible to analyze positive data. We provide some mathematical properties including explicit expressions for the ordinary and incomplete moments, pr...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Lima SR,Cordeiro GM

更新日期：2017-01-01 00:00:00

abstract：:In this study, geochemical and particle size analyses of thirty-four street sediment samples collected from an urban environment around Guanabara Bay, shows highway run-off to be a potential source of heavy metals for the pollution of near-shore sedimentary deposits. Concentrations of Fe, Mn, Zn, Cu, Pb, Cr and Ni wer...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Pereira E,Baptista-Neto JA,Smith BJ,McAllister JJ

更新日期：2007-12-01 00:00:00

abstract：:Sterna hirundinacea (Lesson, 1831) is a migratory seabird that breeds in the Pacific Coast (from Peru to Chile) and along the Atlantic coast of South America from Espírito Santo (Brazil) to Terra del Fuego (Argentina). This paper describes the reproductive success of South American Terns on Cardos Island, Florianopoli...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Fracasso HA,Branco JO

更新日期：2012-06-01 00:00:00

abstract：:Two major memory systems have been recognized over the years (Squire 1987): the declarative memory system, which is under the control of the hippocampus and related temporal lobe structures, and the procedural or habit memory system, which is under the control of the striatum and its connections. Most if not all learn...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Rossato JI,Zinn CG,Furini C,Bevilaqua LR,Medina JH,Cammarota M,Izquierdo I

更新日期：2006-09-01 00:00:00

abstract：:We investigated the influence of environmental factors in spatial and temporal distribution of the seabob shrimp Xiphopenaeus kroyeri in Santos Bay and São Vicente Estuary, state of São Paulo, Brazil. Monthly samples were obtained, from May 2008 through April 2010, from four locations in the estuary and four in the ba...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Heckler GS,Lopes M,Simões SM,Shimizu RM,Costa RC

更新日期：2014-09-01 00:00:00

abstract：:Hepatic disorders such as steatosis and alcoholic steatohepatitis are common diseases that affect thousands of people around the globe. This study aims to identify the main phenol compounds using a new HPLC-ESI+-MS/MS method, to evaluate some oxidative stress parameters and the hepatoprotective action of green dwarf c...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Bispo VS,Dantas LS,Chaves AB Filho,Pinto IFD,Silva RPD,Otsuka FAM,Santos RB,Santos AC,Trindade DJ,Matos HR

更新日期：2017-04-01 00:00:00

abstract：:Despite the indisputable significance of identification of modern analogs for Paleoecology research, relatively few studies attempted to integrate modern and fossil samples on paleoenvironmental reconstructions. In Palynology, this general pattern is not different from other fields of Paleoecology. This study demonstr...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Toledo MB,Barth OM,Silva CG,Barros MA

更新日期：2009-12-01 00:00:00

abstract：:Burkholderia kururiensis is a diazotrophic bacterium originally isolated from a polluted aquifer environment and presents a high level of similarity with the rice endophyte "B. brasilensis" species. This work assessed the ability of B. kururiensis to endophytically colonize rice plantlets by monitoring different tissu...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Mattos KA,Pádua VL,Romeiro A,Hallack LF,Neves BC,Ulisses TM,Barros CF,Todeschini AR,Previato JO,Mendonça-Previato L

更新日期：2008-09-01 00:00:00

abstract：:Limnoperna fortunei, an Asiatic rivers bivalve has become a worldwide problematic invasive species causing several water quality and macrofouling problems. In the Neotropical region it was first recorded in 1991 in the Rio de la Plata coast, Buenos Aires province. Since this, it showed a quick upstream invasion into t...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Brugnoli E,Clemente J,Boccardi L,Borthagaray A,Scarabino F

更新日期：2005-06-01 00:00:00

abstract：:One of the most prominent fields of environmental chemistry is the study and the removal of micro-pollutants from aqueous matrices. Analytical techniques for their identification and quantification are becoming more sensitive and comprehensive and, as a result, an increasing number of drugs have been detected in envir...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Morais RL,Santiago MF,Zang JW,Fonseca-Zang WA,Schimidt F

更新日期：2018-04-01 00:00:00

abstract：:The genus Lippia (Verbenaceae) comprise around 160 species spread out mainly in South and Central Americas with few African species, some of them with potential medicinal use. Brazil is one the most important centers of diversity with approximately 75% of the species described so far. Innumerous species are endemic an...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Sousa SM,Torres GA,Viccini LF

更新日期：2012-12-01 00:00:00

abstract：:Broomrapes (Orobanche sp.) are root holoparasitic plants causing severe damage to various families of horticultural crops. A Preliminary survey was carried in tomato fields infested with orobanche in Potohar plateau of Pakistan. Results indicated that each planting bed comprising10-12 tomato plants contained 7-8 paras...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Ahmad T,Ahmad B,Tariq RMS,Syed MZ,Ahmad Z

更新日期：2018-10-01 00:00:00

abstract：:This article aims to identify and suggest data science strategies to strengthen scientific research in astronomy. The improvements in data workflow performance that can be provided by these strategies can be crucial to the multimessenger astronomy (MMA). A special focus is given to the treatment of raw data in the con...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Rosa RR

更新日期：2020-09-28 00:00:00

abstract：:Programs of Science and Technology research have grown significantly in Brazil over the last decades. Until the 1980s the so-called undirected programs, without specific goals and requiring only scientific merit, prevailed. The few programs with defined goals in this period were never objectively assessed. The same si...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Pian CA,Meneghini R

更新日期：2007-09-01 00:00:00

abstract：:This study aimed to describe the occurrence, morphology and prevalence of Spirocamallanus krameri, a parasite of Hoplerythrinus unitaeniatus collected in state of Pará, Brazil. The morphological and morphometric characteristics are consistent with the species S. krameri, by having a hexagonal mouth opening, 16 cephali...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Pinheiro RHS,Cardoso PJC,Monks S,Santos JN,Giese EG

更新日期：2020-10-28 00:00:00

abstract：:We report for the first time the occurrence of organic-walled microfossils in Ediacaran limestones and marls of the Frecheirinha Formation, Ubajara Group, and the first Precambrian acritarchs so far reported for northeastern Brazil. The assemblage of the Frecheirinha Formation represents a low-diversity microflora com...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Chiglino L,Gaucher C,Sial AN,Ferreira VP

更新日期：2015-04-01 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：:This study aimed at describing daily and seasonal variation in the activity of a population of South-American rattlesnakes (Crotalus durissus) in a savanna like habitat (Cerrado) in Southeastern Brazil. Seasonal and daily activities of snakes were evaluated by the number of captures of snakes during road surveys, acci...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Tozetti AM,Martins M

更新日期：2013-09-01 00:00:00

abstract：:This article analyzes the existing collaboration networks in the Brazilian scientific output in Evolutionary Biology, considering articles published during the period from 2000 to 2012 in journals indexed by Web of Science. The methodology integrates bibliometric techniques and Social Network Analysis resources to des...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Santin DM,Vanz SA,Stumpf IR

更新日期：2016-03-01 00:00:00

abstract：:The structural complexity of galls depends on species-specific interaction driven by the galling taxa. However, the host plant and environment stressors can impose limits on gall developmental patterns and impact the establishment of gall morphology. Herein, we employed qualitative and quantitative approaches in order...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Oliveira DC,Martini VC,Moreira ASFP,Fuzaro L,GonÇalves LA

更新日期：2020-10-19 00:00:00

abstract：:This work was carried out in two small fishing communities, Barra de Mamanguape and Tramataia, Northeastern Brazil. The aim was to study these traditional fishermen's knowledge and perception about tide and wind classifications, as well as their fishing strategies and techniques. Our research methodology involved vari...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Bezerra DM,Nascimento DM,Ferreira EN,Rocha PD,Mourão JS

更新日期：2012-09-01 00:00:00

abstract：:The golden mussel, Limnoperna fortunei, is among the most devastating invasive species in freshwater habitats worldwide, leading to severe environmental disturbances and economic losses. Therefore, management efforts would be greatly improved by methods that efficiently detect and quantify the abundance of the golden ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Pie MR,Ströher PR,Agostinis AO,Belmonte-Lopes R,Tadra-Sfeir MZ,Ostrensky A

更新日期：2017-04-01 00:00:00

abstract：:In order to map scientists' views on media channels and explore their experiences interacting with journalists, the authors conducted a survey of about 1,000 Brazilian scientists. Results indicate that scientists have clear and high expectations about how journalists should act in reporting scientific information in t...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Massarani L,Peters HP

更新日期：2016-06-07 00:00:00

abstract：:the focus ofthis study was to testthe hypothesisthatthere would be no difference betweenthe biocompatibility of silicon dioxide nanofilms used as antimicrobial agents. Sixty male Wistar rats were divided into 4 groups (n=15): Group C (Control,Polyethylene), Group AR (Acrylic Resin), Group NP (Acrylic Resin coated with...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Lacerda-Santos R,Lima ABL,Penha ESD,Santos AD,Carvalho FG,Pithon MM,Dantas AFM

更新日期：2020-04-17 00:00:00