Reproductive success of South American terns (Sterna hirundinacea) from Cardos Islands, Florianópolis, SC, Brazil.

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 acceleration of the anthropogenic activity has increased the atmospheric carbon concentration, which causes changes in regional climate. The Gross Primary Production (GPP) is an important variable in the global carbon cycle studies, since it defines the atmospheric carbon extraction rate from terrestrial ecosystem...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Danelichen VH,Biudes MS,Velasque MC,Machado NG,Gomes RS,Vourlitis GL,Nogueira JS

更新日期：2015-09-01 00:00:00

abstract：:Membrane protein patterns in SDS-PAGE clearly characterized Azospirillum amazonense, A. brasilense, A. lipoferum, and Herbaspirillum seropedicae. Each species showed also a typical major band with approximate molecular weights (AMWs) of 44, 39.5, 35.5, and 37.5 Kdaltons for the four species respectively. Characteristi...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Dianese JC,Döbereiner J,Dos Santos LT

更新日期：1989-06-01 00:00:00

abstract：:Aged skin, featured with dryness and wrinkles, has received mounting attention due to its adverse influences on beauty. β-Sitosterol and vermicularin are two common active ingredients of Thamnolia vermicularis (Sw.) Ach., a traditional Chinese medicine, of which the anti-aging effect has been discovered. Their protect...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Haiyuan YU,Shen X,Liu D,Hong M,Lu Y

更新日期：2019-12-02 00:00:00

abstract：:The South American Pleistocene mammal fauna includes great-sized animals that have intrigued scientists for over two centuries. Here we intend to update the knowledge on its palaeoecology and provide new evidence regarding two approaches: energetics and population density and relative abundance of fossils per taxa. To...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Fariña RA,Czerwonogora A,di Giacomo M

更新日期：2014-03-01 00:00:00

abstract：:A soil isolate, Penicillium janthinellum sw09 has been found to produce significant amounts of an extracellular pectinase subsequently characterized as exo-polygalacturonase (exo-PG). By optimizing growth conditions, P. janthinellum sw09 produced high amount of exo-PG (16.54 units/mL). The crude enzyme was purified by...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Ma Y,Sun S,Hao H,Xu C

更新日期：2016-01-01 00:00:00

abstract：:This essay discusses the problem of the lack of dialogue between theory/empirical reality in the construction of the theoretical structure of dissertations and doctorates in Human Sciences in Brazil; taking Geography as an example, Santos (2000) observed this problem, which persists at the national level. The proposal...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Gomes RD

更新日期：2019-01-01 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：:Knowledge about the botanical source of honey is very important for the beekeeper while it indicates adequate and abundant supply sources of nectar and pollen for the bees, thus contributing toward improved yield. The present study means to identify the pollen types occurring in 58 samples of honey produced in two sta...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Sodré Gda S,Marchini LC,Carvalho CA,Moreti AC

更新日期：2007-09-01 00:00:00

abstract：:Properties of L(+) lactate dehydrogenase (LDH) of Electrophorus electricus (L.) electric organ were studied, comparing the substrates pyruvate and lactate. Electric organ LDH is a soluble enzyme with a pH optimum of 7.4 for pyruvate and 9.0 for lactate. The apparent Km was lower for pyruvate (Km = 2.5 X 10(-4) M) than...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Torres-da Matta J,Nery da Matta A,Hassón-Voloch A

更新日期：1976-01-01 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：:The study area is located in the state of Minas Gerais, Brazil, among the municipalities of Pedro Leopoldo, Matozinhos, and Sete Lagoas, with Velhas River as the eastern boundary. It is located in the São Francisco Craton, where carbonated argillo-arenaceous sediments are emplaced giving origin to the Bambuí Group, in...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Galvão P,Hirata R,Cordeiro A,Barbati D,Peñaranda J

更新日期：2016-03-01 00:00:00

abstract：:The risk of developing cardiovascular disease (CVD) is related to lifestyle (e.g. diet, physical activity and smoking) as well as to genetic factors. This study aimed at evaluating the association between CVD risk factors and DNA damage levels in children and adolescents. Anthropometry, diet and serum CVD risk factors...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Kliemann M,Prá D,Müller LL,Hermes L,Horta JA,Reckziegel MB,Burgos MS,Maluf SW,Franke SI,Silva Jd

更新日期：2012-09-01 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：:Intensification of aquaculture production systems exposes fish to numerous stressors, which may negatively affect their growth and limit profitability of aquaculture systems. This study determined effects of increasing levels of dietary mannanoligosaccharides on growth and intestine morphology of pacu. Fish (44.04 g) ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Sado RY,Bicudo AJ,Cyrino JE

更新日期：2014-09-01 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：:The enigmatic genus Stenocrates Burmeister has 52 species that are widely distributed from Mexico to Argentina, but mainly in South America. In the present study, the larva of the third instar and pupa of Stenocrates agricola Dechambre & Hardy, 2004 are described and illustrated based on specimens from Argentina, this...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Ibarra-Polesel MG,Neita-Moreno JC,Ratcliffe BC

更新日期：2020-10-23 00:00:00

abstract：:A total of 30 animals of the genus Dasyprocta were cytogenetically studied. They belong to the following species: D. prymnolopha (N=20), D. leporina (N=6), D. fuliginosa (N=1) and Dasyprocta sp. (N=3) (Dasyproctidae, Hystricognathi). Cell suspensions were obtained by peripheral blood culture, besides bone marrow and s...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Ramos RS,Vale WG,Assis FL

更新日期：2003-03-01 00:00:00

abstract：:Several parasitoids attacking the same host may lead to competition. Adult parasitoids' abilities to find, parasitize and defend hosts determine resource's retention potential. In soybean, two egg parasitoid species, Telenomus podisi and Trissolcus urichi (Hymenoptera: Platygastridae), compete on the egg masses of Pie...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Cingolani MF,Barakat MC,Liljesthröm GG,Colazza S

更新日期：2019-10-14 00:00:00

abstract：:In this work we study the problem of modeling identification of a population employing a discrete dynamic model based on the Richards growth model. The population is subjected to interventions due to consumption, such as hunting or farming animals. The model identification allows us to estimate the probability or the ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Loibel S,Andrade MG,do Val JB,de Freitas AR

更新日期：2010-12-01 00:00:00

abstract：:Drosophila serido and D. antonietae are sibling species belonging to the Drosophila buzzatii cluster. Morphologically, they can only be discriminated by quantitative traits. In this paper we analyze the length and equalized average curvature of four regions of the aedeagus of D. antonietae and D. serido. Specimens of ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Franco FF,Prado PR,Sene FM,Costa LF,Manfrin MH

更新日期：2006-06-01 00:00:00

abstract：:Sea anemones are considered as polyphagous opportunistic predators and it has been suggested that their diet reflects the structure of the community they inhabit. The feeding ecology of intertidal species is an interesting topic to study due to their wide variety of strategies to obtain food. In this sense, we studied...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Erralde SM,AcuÑa FH

更新日期：2020-10-19 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：: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：:The atmospheric dispersion atmospheric plume of the metropolitan region and neighborhoods of the city of Rio de Janeiro was investigated through elemental analyzes (Na, K, Al, Mn, Pb, Ni, Cr) and stable lead isotopes in two epiphytes; the lichen Parmotrema crinitum (Ach.) and the bromeliad Tillandsia usneoides (L.). A...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Marques Junior AN,Panetto DP,Lamego F,Nepomuceno FO,Monna F,Losno R,Guillon R

更新日期：2018-07-01 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：:The altered expression of the SOX2 transcription factor is associated with oncogenic or tumor suppressor functions in human cancers. This factor regulates the migration and invasion of different cancer cells. In this study we investigated the effect of constitutive SOX2 overexpression on the migration and adhesion cap...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Drakulic D,Vicentic JM,Schwirtlich M,Tosic J,Krstic A,Klajn A,Stevanovic M

更新日期：2015-03-01 00:00:00

abstract：:In the present study we analyzed morphological and metabolic alterations in dams nursing small litters and their consequences to offspring throughout lactation. Offspring sizes were adjusted to Small Litter (SL, 3 pups/ dam) and Normal Litter (NL, 9 pups/ dam). Body weight, food intake, white adipose tissue (WAT) cont...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Xavier JLP,Scomparin DX,Pontes CC,Ribeiro PR,Cordeiro MM,Marcondes JA,Mendonça FO,Silva MTD,Oliveira FB,Franco GCN,Grassiolli S

更新日期：2019-03-21 00:00:00

abstract：:This study presents paleoenvironmental data based on pollen, elemental and isotopic compositions of organic matter (TOC, N, δ(13)C and δ(15)N) and (14)C dating of 170 cm lake sediment record. Samplings have been made in Lagoa Grande at Parque Estadual Turístico do Alto Ribeira - PETAR, Southern São Paulo State, Southe...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Pessenda LC,Saia SE,Gouveia SE,Ledru MP,Sifeddine A,Amaral PG,Bendassolli JA

更新日期：2010-09-01 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