Apis mellifera pollination improves agronomic productivity of anemophilous castor bean (Ricinus communis).

abstract：:Upwelling systems contain a high diversity of pelagic microorganisms and their composition and activity are defined by factors like temperature and nutrient concentration. Denaturing gradient gel electrophoresis (DGGE) technique was used to verify the spatial and temporal genetic variability of Bacteria and Archaea in...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Coelho-Souza SA,Araújo FV,Cury JC,Jesus HE,Pereira GC,Guimarães JR,Peixoto RS,Dávila AM,Rosado AS

更新日期：2015-09-01 00:00:00

abstract：:The Jequiezinho River is a temporary river. In the urban stretch it is impacted, with perennial flow coming from domestic sewage and rainwater. This study evaluated the geochemical distribution and potential mobility of some metals (Pb, Co, Ca, Cr, Mg, Cu, Fe, Mn, Ni and Zn) in sediments of the Jequiezinho River. Sedi...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Silva DS,Cerqueira UMFM,Aguiar RM,Carneiro PLS,Bezerra MA

更新日期：2020-11-27 00:00:00

abstract：:Byrsonima sericea leaves are extensively used in folk medicine in Brazil against gastric disorders. This study investigated the chemical constituents of B. sericea leaf ethanolic extract (BSLE) and its potential gastroprotective activity, with its possible mechanism of the action using ethanol to induce gastric mucosa...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Rodrigues PA,Morais SM,Souza CM,Magalhães DV,Vieira IG,Andrade GM,Rao VS,Santos FA

更新日期：2012-03-01 00:00:00

abstract：:Arithmetic map operations are very common procedures used in GIS to combine raster maps resulting in a new and improved raster map. It is essential that this new map be accompanied by an assessment of uncertainty. This paper shows how we can calculate the uncertainty of the resulting map after performing some arithmet...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Yamamoto JK,Kikuda AT,Rampazzo GJ,Leite CBB

更新日期：2018-08-01 00:00:00

abstract：:Penguins identify their mate or chick by an acoustic signal, the display call. This identification is realized in a particularly constraining environment: the noisy world of a colony of thousands of birds. To fully understand how birds solve this problem of communication, we have done observations, acoustic analysis, ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Aubin T

更新日期：2004-06-01 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：: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 purpose of this study was to analyze the seasonal variation in the nutrient and pigment content of leaves from five tree species - of which three are perennial (Cupania vernalis, Matayba elaeagnoides and Nectandra lanceolata) and two are deciduous (Cedrela fissilis and Jacaranda micrantha) - in an ecotone between ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Bündchen M,Boeger MR,Reissmann CB,Geronazzo KM

更新日期：2016-01-01 00:00:00

abstract：:We investigated reproductive features of the dipsadid snake Erythrolamprus poecilogyrus sublineatus in the southernmost Brazilian coast, a subtropical region characterized by well-marked seasons. Females are significantly smaller than males, have a shorter tail, and reach sexual maturity at later times along their dev...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Quintela FM,Marques WC,Loebmann D

更新日期：2017-01-01 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：:The jelly palm plant [Butia capitata (Martius) Beccari] is a native palm of the Cerrado biome used for many purposes in northern Minas Gerais State, Brazil. Dormancy is common in palm seeds, resulting in slow and uneven germination that may take years to complete. Modification in the growth pattern, anatomical paramet...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Costa BNS,Costa IJS,Souza GA,Santos DND,Silveira FAD,Melo ET,Martins AD,Pasqual M,Setotaw TA,Rodrigues FA

更新日期：2018-10-01 00:00:00

abstract：:Each animal species selects specific microhabitats for protection, foraging, or micro-climate. To understand the distribution patterns of small mammals on the ground and in the understorey, we investigated the use of microhabitats by small mammals in a deciduous forest of southern Brazil. Ten trap stations with seven ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Melo GL,Miotto B,Peres B,Cáceres NC

更新日期：2013-04-01 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：: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：:In some previous studies, we described the isolation of nine compounds from leaves of Derris urucu, a species found widely in the Amazon rainforest, identified as five stilbenes and four dihydroflavonols. In this work, three of these dihydroflavonols [urucuol A (1), urucuol B (2) and isotirumalin (3)] were evaluated t...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Silva EA,Lôbo LT,Silva GA,Souza Filho AP,Da Silva MN,Arruda AC,Guilhon GM,Santos LS,Arruda MS

更新日期：2013-09-01 00:00:00

abstract：:This paper discusses the facies distribution of Mesozoic eolian sandstones between the Sanga do Cabral and Botucatu formations and also their contact relationships, in São Leopoldo area, State of Rio Grande do Sul (RS), southern Brazil. The main distinctive characteristics regarding these sandstones and formations are...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Nowatzki CH,Kern HP

更新日期：2000-06-01 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：:One of the most important steps is to clarify the juice, which are added synthetic polymer acrylamide base, aiming the fast settling of impurities present in the juice. However, this input is expensive and may have carcinogenic and neurotoxic actions to humans. The search for new natural flocculants that have similari...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Freita CM,Freita LA,Tralli LF,Silva AF,Mendes FQ,Teixeira V,Mutton MJR

更新日期：2017-10-01 00:00:00

abstract：:We evaluated an artificial tritrophic exposure system for use in ecotoxicological evaluations of environmental stressors on aphidophagous predators. It consists of an acrylic tube with a Parafilm M sachet containing liquid aphid diet, into which can be added environmental stressors. Immature Cycloneda sanguinea, Harmo...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Paula DP,Souza LM,Andow DA,Sousa AA,Pires CS,Sujii ER

更新日期：2016-09-01 00:00:00

abstract：:Goniopsis cruentata is a common semi-terrestrial crab in Brazilian mangroves and an important fishery resource for traditional communities in the northeastern Brazilian coast. Aiming to contribute to the knowledge about the species, this study evaluated the carapace width and weight growth curves, the relative growth ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Reis CR,Taddei FG,Cobo VJ

更新日期：2015-04-01 00:00:00

abstract：:Lutzomyia longipalpis is the most important vector of AmericanVisceral Leishmaniasis (AVL) due to Leishmania chagasi in the New World. Despite its importance, AVL, a disease primarily of rural areas, has increased its prevalence and became urbanized in some large cities in Brazil and other countries in Latin America. ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Soares RP,Turco SJ

更新日期：2003-09-01 00:00:00

abstract：:Bioceramic composites were obtained from chitosan and hydroxyapatite pastes synthesized at physiological temperature according to two different syntheses approaches. Usual analytical techniques (X-ray diffraction analysis, Fourier transformed infrared spectroscopy, Thermo gravimetric analysis, Scanning electron micros...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Finisie MR,Josué A,Fávere VT,Laranjeira MC

更新日期：2001-12-01 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：UNLABELLED:Thirty-five patients (23 males and 12 females), age 35 +/- 13 years old, presenting either idiopathic calcium nephrolithiasis, nephrocalcinosis or mild renal failure with idiopathic calcium nephrolithiasis were selected for the analysis of low molecular weight proteinuria and the possible mutations occurrenc...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Rebelo MA,Tostes V,Araújo NC,Martini SV,Botelho BF,Guggino WB,Morales MM

更新日期：2005-03-01 00:00:00

abstract：:Stem bleeding disease (resinosis) of coconut palm is caused by Thielaviopsis paradoxa and is very important in the state of Sergipe, Brazil. Understanding the epidemiological behavior of the disease is essential for establishing more efficient control strategies. Thus, we characterized the temporal progression and spa...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Carvalho RR,Souza PE,Warwick DR,Pozza EA,Filho JL

更新日期：2013-01-01 00:00:00

abstract：:Pathogenic microbial detection and control in laboratory animal facilities is essential to guarantee animal welfare, data validity and reproducibility. Helicobacter spp. are known to affect mice health, what may interfere with experimental outcomes. This study aimed to screen for Helicobacter spp. in mice from animal ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Matos-Rodrigues GE,Masseron CC,Silva FJMD,Frajblat M,Moreira LO,Martins RAP

更新日期：2020-01-01 00:00:00

abstract：:The present study demonstrates 30 plant bugs species associated with 50 records of prey and six records of mycophagy for Brazil. The data were compiled from Schuh's Catalog, the literature, specimens deposited in entomology museums and exemplars from different regions of Brazil sent for identification. Some of the dat...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Nogueira BCF,Ferreira PSF,Coelho LA,Martins DS,Barcellos BD

更新日期：2019-08-12 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：: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 aimed to establish a cryopreservation protocol for embryogenic cultures of A. angustifolia, enabling the ex situ conservation of the species. Embryogenic cultures were established from immature seeds and treated with variations of the cryoprotectant solutions SuDG, SoD and PVS2 prior to immersion in liquid ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Demarchi G,Stefenon VM,Steiner N,Vieira FN,Dal Vesco LL,Guerra MP

更新日期：2014-12-01 00:00:00