Pollen analysis in honey samples from the two main producing regions in the Brazilian northeast.

abstract：:The aim of this study was to investigate the polliniferous floral sources used by Apis mellifera (L.) (africanized) in an apiary situated in Pará de Minas, Minas Gerais state, and evaluate the pollen prefences among the beehives. Two beehives of Langstroth type with frontal pollen trap collectors were used. The harves...

journal_title：Anais da Academia Brasileira de Ciencias

authors： da Luz CF,Bacha Junior GL,Fonseca RL,Sousa PR

更新日期：2010-06-01 00:00:00

abstract：:In the Budgerigar Melopsittacus undulatus, the significance of a conspecific alarm call was investigated in two seasons, winter and spring. Two qualitatively different behavioral responses were displayed by the receivers in reply to playbacks: call(s) and/or taking flight(s). The comparative analysis of the number of ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Nicolas G,Fraigneau C,Aubin T

更新日期：2004-06-01 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：:Candida is a human fungal pathogen that causes a wide range of diseases. Candida albicans is the main etiologic agent in these diseases; however, infections can be caused by non-albicans Candida species. Virulence factors such as biofilm production, which protect the fungus from host immunity and anti-fungal drugs, ar...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Scorzoni L,Menezes RT,Pereira TC,Oliveira PS,Ribeiro FC,Santos ELS,Fugisaki LRO,Oliveira LD,Amorim JBO

更新日期：2020-12-11 00:00:00

abstract：:The study of radiation entrance and exit dynamics and energy consumption in a system is important for understanding the environmental processes that rule the biosphere-atmosphere interactions of all ecosystems. This study provides an analysis of the interaction of energy in the form of photosynthetically active radiat...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Curado LF,Musis CR,Cunha CR,Rodrigues TR,Pereira VM,Nogueira JS,Sanches L

更新日期：2016-09-01 00:00:00

abstract：:Soybeans contain about 30% carbohydrate, mainly consisting of non-starch polysaccharides (NSP) and oligosaccharides. NSP are not hydrolyzed in the gastrointestinal tract of monogastric animals. These NSP negatively affect the development of these animals, especially the soluble fraction. This work aimed to establish a...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Bueno RD,Borges LL,God PIVG,Piovesan ND,Teixeira AI,Cruz CD,Barros EG

更新日期：2018-01-01 00:00:00

abstract：:Effects of Aspergillus niger was investigated on the strength of cotton textile specimens impregnated with nano-wollastonite, and then compared with normal specimens. Cotton strips were cut and prepared in warp and wept directions according to the standard specifications ASTM D-5035. Results showed that incubation of ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Taghiyari HR,Majidinajafabadi R,Vahidzadeh R

更新日期：2018-09-01 00:00:00

abstract：:Proteolytic enzymes have a fundamental role in many biological processes and are associated with multiple pathological conditions. Therefore, targeting these enzymes may be important for a better understanding of their function and development of therapeutic inhibitors. Fluorescence Resonance Energy Transfer (FRET) pe...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Carmona AK,Juliano MA,Juliano L

更新日期：2009-09-01 00:00:00

abstract：:The objective of this study was to investigate the effects of 2% L-glutamine supplementation on myenteric innervation in the ileum of diabetic rats, grouped as follows: normoglycemic (N); normoglycemic supplemented with L-glutamine (NG); diabetic (D); and diabetic supplemented with L-glutamine (DG). The ileums were su...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Pereira RV,Linden DR,Miranda-Neto MH,Zanoni JN

更新日期：2016-01-01 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：:Geopropolis is a special type of propolis produced by stingless bees. Several pharmacological properties have been described for different types of geopropolis, but there have been no previous studies of the geopropolis from Melipona mondury. In this study, we investigated the antioxidant, antibacterial, and antiproli...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Santos TLAD,Queiroz RF,Sawaya ACHF,Lopez BG,Soares MBP,Bezerra DP,Rodrigues ACBC,Paula VF,Waldschmidt AM

更新日期：2017-01-01 00:00:00

abstract：:The non-dinosaurian dinosauriform silesaurids are the closest relatives of crown-group dinosaurs and are thus, important for understanding the origins of that group. Here, we describe the limb bone histology of the Late Triassic silesaurid Sacisaurus agudoensis from the Candelária Sequence of the Santa Maria Supersequ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Veiga FH,Botha-Brink J,Ribeiro AM,Ferigolo J,Soares MB

更新日期：2019-06-19 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：: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：:Multidrug resistance to chemotherapy is a major obstacle in the treatment of cancer patients. The best characterised mechanism responsible for multidrug resistance involves the expression of the MDR-1 gene product, P-glycoprotein. However, the resistance process is multifactorial. Studies of multidrug resistance mecha...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Rumjanek VM,Trindade GS,Wagner-Souza K,de-Oliveira MC,Marques-Santos LF,Maia RC,Capella MA

更新日期：2001-03-01 00:00:00

abstract：:The present work gives continuity in the analysis of the wear influence on cylindrical hydrodynamic bearings by presenting an experimental validation of the wear model previously proposed by the authors. This validation is carried on using the frequency response of the rotor-bearings system in directional coordinates....

journal_title：Anais da Academia Brasileira de Ciencias

authors： Machado TH,Cavalca KL

更新日期：2016-10-01 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：:Extreme climatic events and their hazards have strong impact on society. Urban areas in Brazil are especially vulnerable to the impact of such events due to their rapid growth and inappropriate infrastructure. Viçosa is a mid-sized city in Southeastern Brazil that has been experiencing issues associated with urban exp...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Avila-Diaz A,Justino F,Lindemann DS,Rodrigues JM,Ferreira GR

更新日期：2020-01-01 00:00:00

abstract：:Primaquine and chloroquine are used for the treatment of malaria; evidence from the literature suggests that these drugs may induce oxidative stress. In this study we investigated the effects of primaquine and chloroquine on oxidative damage and DNA damage in brain, liver and kidney of rats after 7, 14 and 21 days of ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Giovanella F,Ferreira GK,de Prá SD,Carvalho-Silva M,Gomes LM,Scaini G,Gonçalves RC,Michels M,Galant LS,Longaretti LM,Dajori AL,Andrade VM,Dal-Pizzol F,Streck EL,de Souza RP

更新日期：2015-08-01 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：:A new species of the reticulatus species group, C. castelloni Santarém and Felippe-Bauer, is described and illustrated based on female specimens from the state of Amazonas, Brazil. A systematic key, wing photographs and table with numerical characters of females and a synopsis of 24 species of the Culicoides reticulat...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Santarém MC,Farias ES,Felippe-Bauer ML

更新日期：2015-04-01 00:00:00

abstract：:The objective of this study was to estimate variance components for performance and carcass traits in a paternal broiler line. The (co)variance components were estimated by the restricted maximum likelihood method applied to the animal model, including the fixed effect of group (sex and hatch) and additive genetic and...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Cruz VAR,Grupioni NV,Mendonça GG,Venturini GC,Ledur MC,Peixoto JO,Munari DP

更新日期：2020-01-01 00:00:00

abstract：:The aim of this work was to investigate the phenolic content and antioxidant capacity of infusions of commercial herb samples (fennel, anise, peppermint, lemon grass and lemon balm) popularly consumed in Brazil. The infusion preparation for phenolic extraction was optimized using multivariate planning. Spectrophotomet...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Santos WNLD,MagalhÃes BEA

更新日期：2020-11-11 00:00:00

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：:Two experiments (E) were carried out to evaluate the effects of fumaric acid and an acidifier blend [composed by calcium formate, calcium lactate and medium-chain fatty acids (capric and caprylic)] in piglet diets containing colistin (40 ppm) or halquinol (120 ppm) on performance, diarrhea incidence (E1), organs relat...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Grecco HAT,Amorim AB,Saleh MAD,L P Tse M,Telles FG,Miassi GM,Pimenta GM,Berto DA

更新日期：2018-02-19 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：:The aim of this study was to evaluate the effect of phosphorus (P) on the toxicity of zinc (Zn) for the alga Raphidocelis subcapitata. P was provided in three concentrations: 2.3 x 10-4 mol L-1, 2.3 x 10-6 mol L-1 and 1.0 x 10-6 mol L-1. Algal cells were acclimated to the specific P concentrations before the start of ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Rodgher S,Contador TM,Rocha GS,Espindola ELG

更新日期：2020-11-06 00:00:00

abstract：:In the present work, the ester synthesis in organic media catalyzed by lipases immobilized on chrysotile was studied. Lipases of different sources (Mucor javanicus, Pseudomonas cepacia, Rhizopus oryzae, Aspergillus niger and Candida rugosa) were immobilized on chrysotile, an inexpensive magnesium silicate, and used fo...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Silva JE,Jesus PC

更新日期：2003-06-01 00:00:00

abstract：:Life history traits are considered key indicators of plant invasibility. Among them, the germination behavior of seeds is of major relevance because it is influenced by environmental factors of invaded ecosystem. Here, we investigated how seed traits and seed tolerance to environmental factors on seed germination of C...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Leal LC,Meiado MV,Lopes AV,Leal IR

更新日期：2013-09-01 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