2,311 results match your criteria Anais da Academia Brasileira de Ciencias[Journal]


Composition and ecology of a snake assemblage in an upland forest from Central Amazonia.

An Acad Bras Cienc 2019 18;91(suppl 1):e20190080. Epub 2019 Apr 18.

Instituto de Ciências Biológicas, Universidade Federal do Amazonas, 69080-900 Manaus, AM, Brazil.

Most species of Amazonian snakes have wide geographic distributions. However, local environmental factors influence the formation of assemblages in different localities. In this study, we investigated the composition of the assemblage and the effect of environmental variables on the distribution of the species inhabiting an upland forest in the Experimental Farm area of the Federal University of Amazonas in Manaus, Brazil. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920190080DOI Listing

An overview of the Brazilian contributions to Green Analytical Chemistry.

An Acad Bras Cienc 2019 18;91(suppl 1):e20180294. Epub 2019 Apr 18.

Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Avenida Centenário, 303, 13400-970 Piracicaba, SP, Brazil.

Green Analytical Chemistry (GAC) is a research field that seeks for more sustainable analytical approaches to minimize the toxicity and amounts of wastes without hindering the analytical performance. This is a trend in Analytical Chemistry worldwide and because of the diversity of innovations on this subject, Brazil stands out as the third in the list of the main contributors to GAC, with ca. 11. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180294DOI Listing

Mercury exposure of children living in Amazonian villages: influence of geographical location where they lived during prenatal and postnatal development.

An Acad Bras Cienc 2019 18;91(suppl 1):e20180097. Epub 2019 Apr 18.

Núcleo de Medicina Tropical, Universidade Federal do Pará, Avenida Generalíssimo Deodoro, 92, Umarizal, 66055-240 Belém, PA, Brazil.

Introduction: In some Amazonian river basins, hair mercury concentration is above the recommended levels. We evaluated the influence of birth geographical location in the hair mercury level of Amazonian riverine children.

Materials And Methods: Hair mercury concentration was measured in 219 children living in four Amazonian riverine communities: Tapajós River (São Luiz do Tapajós and Barreiras villages, n = 110), Tocantins River (Limoeiro do Ajurú village, n = 61), and Caeté River (Caratateua village, n = 48). Read More

View Article

Download full-text PDF

Source
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S
Publisher Site
http://dx.doi.org/10.1590/0001-3765201920180097DOI Listing
April 2019
1 Read

Consumption of Euterpe edulis fruit by wildlife: implications for conservation and management of the Southern Brazilian Atlantic Forest.

An Acad Bras Cienc 2019 8;91(1):e20180537. Epub 2019 Apr 8.

Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Departamento de Fitotecnia, Rodovia Admar Gonzaga, 1346, Itacorubi, 88034-001 Florianópolis, SC, Brazil.

This study aimed to measure the wildlife consumption of Euterpe edulis fruit and use this data to discuss management possibilities. To estimate infructescence fruit volume consumed, collectors were installed in fruit-bearing palms. To characterize consumption from the ground, samples were placed next to fruiting palms. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180537DOI Listing
April 2019
1 Read

A new class of lifetime models and the evaluation of the confidence intervals by double percentile bootstrap.

An Acad Bras Cienc 2019 8;91(1):e20180480. Epub 2019 Apr 8.

Departamento de Estatística, Universidade Federal de Pernambuco, s/n, Cidade Universitária, 50740-540 Recife, PE, Brazil.

In this paper, we introduce a new three-parameter distribution by compounding the Nadarajah-Haghighi and geometric distributions, which can be interpreted as a truncated Marshall-Olkin extended Weibull. The compounding procedure is based on the work by Marshall and Olkin 1997. We prove that the new distribution can be obtained as a compound model with mixing exponential distribution. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180480DOI Listing

Influences of dietary crude protein and stocking density on growth performance and body measurements of ostrich chicks.

An Acad Bras Cienc 2019 8;91(1):e20180479. Epub 2019 Apr 8.

Nutrition and Clinical Nutrition Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt.

Thirty-six African Black ostrich chicks were used to investigate the effects of dietary crude protein (CP) levels (180, 210 and 240 g/kg), stocking density (4.5 and 3 m2/bird) and their interactions. A factorial arrangement was used to examine the impact of treatments on growth performance and body measurements of ostrich chicks during 2 to 10 weeks of the age. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180479DOI Listing

Discovery and characterization of SSR markers in Eugenia uniflora L. (Myrtaceae) using low coverage genome sequencing.

An Acad Bras Cienc 2019 8;91(1):e20180420. Epub 2019 Apr 8.

Universidade Federal do Pampa, Núcleo de Ecologia Molecular e Micropropagação de Plantas, Rodovia BR 290, Campus Universitário, 97300-000 São Gabriel, RS, Brazil.

Eugenia uniflora L. (Myrtaceae) is a tree species widely distributed in South America suffering the effects of the exploitation of natural populations. In this study, we employed low coverage sequencing of the E. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180420DOI Listing
April 2019
1 Read

Exploring the Insecticide and Acaricide Potential of Development Regulators obtained from Restinga vegetation from Brazil.

An Acad Bras Cienc 2019 8;91(1):e20180381. Epub 2019 Apr 8.

Laboratório de Estudos de Pragas e Parasitas, Departamento de Biologia Celular e Molecular, Universidade Federal Fluminense, Outeiro de São João Batista, s/n Centro, 24020 140 Niterói, RJ, Brazil.

As a part of our continuing search for insect and arthropod development regulators from Brazilian restinga vegetation of the Rio de Janeiro State, crude extracts, purified fractions and essential oils were submitted to screening tests seeking for biological activities on the development of the insects Rhodnius prolixus, Dysdercus peruvianus, Oncopeltus fasciatus and Rhipicephalus (Boophilus) microplus. Up to now, 102 secondary metabolites have been detected in the fractions, among them monoterpenes, sesquiterpenes and two triterpenes which were obtained from the species, Eugenia sulcata, Pilocarpus spicatus, Manilkara subsericea, Myrciaria floribunda and Zanthoxylum caribaeum. These secondary plant metabolites are considered of interest for the use of studies related to arthropod endocrinology, vector-parasite interaction system, and population control of vector insect and agricultural pest. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180381DOI Listing

Saline extract from Malpighia emarginata DC leaves showed higher polyphenol presence, antioxidant and antifungal activity and promoted cell proliferation in mice splenocytes.

An Acad Bras Cienc 2019 8;91(1):e20190916. Epub 2019 Apr 8.

Department of Antibiotics, Biosciences Centre, Federal University of Pernambuco, Av. Prof. Artur de Sá, s/n, 50740-520 Recife, PE, Brazil.

Currently, the research of new natural compounds with biological potential demonstrates great ethnopharmacological importance. In this study, we evaluated the biological properties promoted by saline extract from Malpighia emarginata DC leaves, whose objective is to evaluate the antioxidant, antimicrobial and cytotoxicity potential. Phytochemical characterization was performed by UPLC-MS chromatography to identify the chemical compounds. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180358DOI Listing

Phenolic compounds from the rhizome of Renealmia nicolaioides Loes.: a new diarylheptanoid.

An Acad Bras Cienc 2019 8;91(1):e20180312. Epub 2019 Apr 8.

Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, 2000, Parque Califórnia, 28013-602 Campos dos Goytacazes, RJ, Brazil.

This study aims to identify phenolic compounds in dichloromethane and methanolic extracts of the rhizome of Renealmia nicolaioides collected in the North Region of Brazil. Two known diarylheptanoids, 1,7-bis(4-hydroxyphenyl)-(1E)-1-hepten-3-one (1), and 5R-1,7-bis(4-hydroxyphenyl)-1E-hepten-5-ol (2), and a new one (1R,2S,5S)-2-hydroxy-1,7(p-hydroxyphenyl)-centrolobine (3), as well as one flavonoid, 3-metoxi-quercetin (4) were isolated by chromatographic procedure and identified by spectroscopic techniques (1H and13C NMR, HRMS and CD). The acetyl derivative of 2 was used to confirm its structure. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180312DOI Listing
April 2019
2 Reads

Diet, sexual dimorphism and reproduction of sympatric racers Philodryas aestiva and Philodryas patagoniensis from the coastal Brazilian Pampa.

An Acad Bras Cienc 2019 8;91(1):e20180296. Epub 2019 Apr 8.

Laboratório de Vertebrados, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Avenida Itália, s/n, Vila Carreiros, 96203-900 Rio Grande, RS, Brazil.

Herein we investigated diet, sexual dimorphism and reproductive biology of two sympatric congeneric species at the coastal Brazilian Pampa, Philodryas aestiva and P. patagoniensis. Analysis of the stomach content of the scansorial Philodryas aestiva revealed that it feeds mainly on Anura and small mammals, while it occasionally consumes Insecta, Squamata and Aves. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180296DOI Listing

Development of an annual drought classification system based on drought severity indexes.

An Acad Bras Cienc 2019 8;91(1):e20180188. Epub 2019 Apr 8.

Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo, Unidade Colatina, Av. Arino Gomes Leal, 1700, Santa Margarida, 29700-060 Colatina, ES, Brazil.

In order to characterize the occurrence and intensity of droughts in the Doce River Basin, as well as to develop a system for its classification, four different drought indexes were evaluated: Percent of Normal Precipitation (PNP), Deciles Method (DM), Rainfall Anomaly Index (RAI) and Standardized Precipitation Index (SPI). The indices were calculated annually, based on precipitation data from 89 rainfall stations of the Brazilian National Water Agency (ANA). Nine analysis units (AUs) were determined in the basin and the Thiessen Polygons method was used to obtain the average precipitation in the respective drainage areas. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180188DOI Listing
April 2019
1 Read

Evaluation of cytotoxicity and wound healing activity of Avicennia schaueriana in cream.

An Acad Bras Cienc 2019 8;91(1):e20180171. Epub 2019 Apr 8.

Departamento de Histologia e Embriologia, Centro de Biociências, Universidade Federal de Pernambuco, Avenida Professor Moraes Rego, s/n, Cidade Universitária, 50670-901 Recife, PE, Brazil.

Avicennia schaueriana is found in Brazilian mangrove coast. The cytotoxicity in vitro of the Aqueous Extract of Leaves of Avicennia schaueriana (AELAs) and the healing activity of the plant in cream on mice skin wounds were evaluated in this study. The cytotoxic evaluation was performed on Vero cells. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180171DOI Listing
April 2019
2 Reads

On the occurrence and ecology of Glaucus atlanticus Forster, 1777 (Mollusca: Nudibranchia) along the Southwestern Atlantic coast.

An Acad Bras Cienc 2019 8;91(1):e20180154. Epub 2019 Apr 8.

Laboratório de Ecologia do Zooplâncton, Instituto de Oceanografia, Universidade Federal do Rio Grande/FURG, Av. Itália, Km 8, Campus Carreiros, 96203-900, Rio Grande, RS, Brazil.

Unlike the majority of the nudibranchs, Glaucidae lives adrift at the sea surface within Tropical and Subtropical ocean basins, feeding on cnidarians or using them to attach their egg strings as a reproductive strategy. The latitudinal distribution of Glaucus atlanticus throughout the Brazilian Province is influenced by the Brazil current and, in its austral limit, by seasonal shifts in the Subtropical Convergence Zone (especially under the influence of ENSO El Niño events). Once over the shelf, seasonal wind patterns and meteorological events can force a passive displacement of the species towards the shore. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180154DOI Listing

Effect of the intake of high or low glycemic index high carbohydrate-meals on athletes' sleep quality in pre-game nights.

An Acad Bras Cienc 2019 8;91(1):e20180107. Epub 2019 Apr 8.

Departamento de Ciências do Movimento Humano, Universidade Federal de São Paulo/UNIFESP, Rua Silva Jardim, 136, 11015-020 Santos, SP, Brazil.

This study investigated the effect of the intake of high (HGI) or low glycemic index (LGI) high-carbohydrate meals on athletes' sleep. Nine basketball adult male athletes were assessed during a championship and received high-carbohydrate meals (dinner and evening snack) with HGI or LGI. Quantitative and qualitative sleep variables were assessed: sleep latency (LAT), sleep efficiency (EFIC), Wake After Sleep Onset (WASO), sleep time through actigraphy and sleep diary. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180107DOI Listing
April 2019
1 Read

The development and characterization of Propranolol Tablets using Tapioca starch as excipient.

An Acad Bras Cienc 2019 8;91(1):e20180094. Epub 2019 Apr 8.

Departamento de Fármacos e Medicamentos, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Centro de Ciências da Saúde, Bloco L, Avenida Carlos Chagas Filho, 373, Cidade Universitária, Ilha do Fundão, 21945-970 Rio de Janeiro, RJ, Brazil.

Tapioca starch (TS) is produced from Cassaca roots and it is differentiated from other starches because it contains about 17-20% amylase and low amount of residual substances. Propranolol (POP) is a non-selective beta-adrenergic blocking agent and it is in the World Health Organization's List of Essential Medicines. The aim of this work was to investigate the potential of TS in the development of POP tablets by means of direct compression. Read More

View Article

Download full-text PDF

Source
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S
Publisher Site
http://dx.doi.org/10.1590/0001-3765201920180094DOI Listing
April 2019
1 Read

Orange and Passion Fruit Wastes Characterization, Substrate Hydrolysis and Cell Growth of Cupriavidus necator, as Proposal to Converting of Residues in High Value Added Product.

An Acad Bras Cienc 2019 8;91(1):e20180058. Epub 2019 Apr 8.

Universidade Federal de Pernambuco/UFPE, Centro Acadêmico de Vitória, Rua Alto do Reservatório, s/n, Bela Vista, 55608-680 Vitória de Santo Antão, PE, Brazil.

Brazil is the world's largest producer of orange and passion fruit, which are destined mainly for industrialization, generating grand volumes of wastes. The solid portion of these residues is a rich source of pectin - composed mainly of galacturonic acid and neutral sugars, which through the hydrolysis process can be used in biological conversion processes, as the production of polyhydroxyalkanoates (PHAs). This way, we characterized these wastes, followed by the extraction and hydrolysis of pectin for employ as a substrate for the cell growth of Cupriavidus necator. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180058DOI Listing

Redescription of immatures of Dasyhelea flavifrons Guérin-Méneville (Culicomorpha: Ceratopogonidae) and new contribution to the knowledge of its larval habitats.

An Acad Bras Cienc 2019 8;91(1):e20180047. Epub 2019 Apr 8.

Centro de Estudios Parasitológicos y de Vectores/CEPAVE, Facultad de Ciencias Naturales y Museo/UNLP, Consejo Nacional de Investigaciones Científicas y Técnicas/CONICET, Boulevard 120, s/n, e/61 y 62 La Plata, Buenos Aires, Argentina.

The fourth instar larva and pupa of Dasyhelea flavifrons Guérin-Méneville are redescribed, illustrated, and photomicrographed using binocular, phase-contrast, and scanning electron microscopy. Comparisons with the American species of the grisea group were made. The immatures were collected by using a siphon bottle in tree-holes and from water collected in dead snail shells in Salta Province, Argentina, transported to the laboratory and there bred to the emergence of the adults. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180047DOI Listing

Histatin 5 and human lactoferrin inhibit biofilm formation of a fluconazole resistant Candida albicans clinical isolate.

An Acad Bras Cienc 2019 8;91(1):e20180045. Epub 2019 Apr 8.

Instituto de Microbiologia Paulo de Goés, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho, 373, 21941-590 Rio de Janeiro, RJ, Brazil.

Candida albicans is the most important fungal pathogen that causes infections in humans. Biofilms are hard-to-treat structures due to their high antifungal resistance. Saliva is a fluid that contains antimicrobial substances acting as the first-line of defense against pathogens, and its immune components may be potential tools for the discovery of new treatments against candidiasis. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180045DOI Listing

Metacercariae of Strigeidae Parasitizing Amphibians of the Chaco Region in Argentina.

An Acad Bras Cienc 2019 8;91(1):e20180044. Epub 2019 Apr 8.

Consejo Nacional de Investigaciones Científicas y Técnicas/CONICET, Centro de Ecología Aplicada del Litoral/CECOAL, W 3400 AMD, Corrientes, Argentina.

The goal of the present study was to analyze the metacercariae found in adult amphibians collected in the Argentinean Chaco region. A total of 194 frogs, Leptodactylus chaquensis, Leptodactylus latinasus, and Lepidobatrachus laevis was examined for digeneans. Three different larval trematodes of the genus Strigea (Digenea, Strigeidae) were found infecting the liver, mesentery, body cavity, and muscle of frogs. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180044DOI Listing
April 2019
1 Read

Euphausiacea diversity in a trans-oceanic transect through the South Atlantic Ocean: the first Atlantic record of Thysanopoda astylata Brinton, 1975.

An Acad Bras Cienc 2019 8;91(1):e20180034. Epub 2019 Apr 8.

Programa de Pós-Graduação em Oceanografia Física, Química e Geológica/PPGOFQG, Instituto de Oceanografia, Universidade Federal do Rio Grande, Caixa Postal 474, Avenida Itália, Km 8 , Campus Carreiros, 96203-900 Rio Grande, RS, Brazil.

Information about euphausiids in central South Atlantic Ocean is scarce; hence, we investigated species composition and distribution of euphausiids along a longitudinal transect in this region, with an emphasis on Thysanopoda. Zooplankton samples were collected from 44 stations during the first Transatlantic Commission (Brazil-Africa). Euphausiids comprised 21,390 individuals across larval stages (nauplius, calyptopis, and furcilia) and adults. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180034DOI Listing

Daily life of women with alcoholic companions and the provided care.

An Acad Bras Cienc 2019 8;91(1):e20180008. Epub 2019 Apr 8.

Programa de Pós-Graduação em Enfermagem Psiquiátrica, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo/EERP-USP, Rua Prof. Hélio Lourenço, 3900, Vila Monte Alegre, 14040-902 Ribeirão Preto, SP, Brazil.

The study aimed to know the daily life of women with alcoholic companions and the provided care. This is a comprehensive-interpretative, qualitative study, guided by the thematic Oral History method. Data collection occurred by semistructured interview. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180008DOI Listing
April 2019
1 Read

Health benefits of subcutaneous zinc edetate and diphenyl diselenide in calves during the weaning period.

An Acad Bras Cienc 2019 8;91(1):e20171042. Epub 2019 Apr 8.

Departamento de Zootecnia, Universidade do Estado de Santa Catarina/UDESC, Rua Beloni Trombeta Zanin, 680D, 89815-630 Chapecó, SC, Brazil.

The aims of this study were to investigate whether treatments with zinc edetate (Zn) and diphenyl diselenide ((PhSe)2) enhance performance, immune responses, protein metabolism, and oxidant/antioxidant status in calf serum and muscle. Animals were divided into four groups (n=6 each): control (without supplementation), and groups supplemented on days 50 and 70 of life with (PhSe)2, Zn, and a combination of (PhSe)2 and Zn. Animals treated with (PhSe)2 gained more weight by experimental day 220 than did the control group, but there was no difference by the end of the experiment (day 300). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920171042DOI Listing

The theorical-methodological construction of theses and dissertations and their epistemological problems.

An Acad Bras Cienc 2019 8;91(1):e20171020. Epub 2019 Apr 8.

Programa de Pós-Graduação em Geografia/PPGEO-CFCH-UFPE, Departamento de Ciências Geográficas, Av. Prof. Moraes Rego, 1235, CFCH 5o e 6o andar, Cidade Universitária, Caixa Postal 7803, 50670-901 Recife, PE, Brazil.

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 is to present the question and to suggest the relationship between theory/empirical reality coming of the dialogue with specific research questions. It is these research questions that will define the limitations, factors, agents, processes and structures that will be studied. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920171020DOI Listing

Ecological aspects of natural populations of Hyalella pampeana (Crustacea, Amphipoda, Hyalellidae) from the Natural Reserve Island of Martín García (Río de La Plata, Argentina).

An Acad Bras Cienc 2019 8;91(1):e20170928. Epub 2019 Apr 8.

Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata/FCEyN, UNMdP, Funes St. 3350, 7600 Mar del Plata, Argentina.

Freshwater amphipods of the genus Hyalella have a great importance in aquatic ecosystems due to their role in matter and energy cycling and its utilization as bioindicators of environmental health. The aim of this work was to analyze relevant population parameters of Hyalellapampeana, such as population density and structure, individual body size, sex ratio, fecundity and recruitment, and to study the possible relation of these parameters to variations in environmental variables. Samples were taken monthly during a one-year period (2006) at three small ponds in the Natural Reserve Island of Martín García, Argentina. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170928DOI Listing

Useful plants and their relation to archaeological sites in the Serra de Carajás, Brazil.

An Acad Bras Cienc 2019 8;91(1):e20170909. Epub 2019 Apr 8.

Museu Paraense Emílio Goeldi, Coordenação de Botânica, Av. Perimetral, 1901, Terra Firme, 66077-830 Belém, PA, Brazil.

Multidisciplinary studies including archeology and ethnobotany that seek to understand human interventions on the landscape have obtained important results concerning Amazon biodiversity. This study aims to identify the useful plants in different phytophysiognomies related to archeological sites in the Serra de Carajás, in the state of Pará, as well as expand knowledge of the local flora. Information was collected in 76 parcels located in the influence areas of 15 archaeological sites: 45 in forest vegetation, 30 in canga vegetation and 1 in palm swamps. Read More

View Article

Download full-text PDF

Source
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S
Publisher Site
http://dx.doi.org/10.1590/0001-3765201920170909DOI Listing
April 2019
3 Reads

The Nadarajah-Haghighi Lindley distribution.

An Acad Bras Cienc 2019 8;91(1):e20170856. Epub 2019 Apr 8.

Departamento de Estatística, Universidade Federal de Pernambuco, Cidade Universitária, Av. Prof. Moraes Rego, 1235, 50740-540 Recife, PE, Brazil.

We define a new lifetime model based on compounding the Lindley and Nadarajah-Haghighi distributions. The proposed distribution is very competitive to other lifetime models. Some of its mathematical properties are investigated including generating function, mean residual life, moments, Bonferroni and Lorenz curves and mean deviations. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170856DOI Listing

Neotectonics as a structural control of the boundaries of the Pantanal Matogrossense Sub-Regions.

An Acad Bras Cienc 2019 8;91(1):e20170697. Epub 2019 Apr 8.

Laboratório de Geoprocessamento para Aplicações Ambientais, Faculdade de Engenharias, Arquitetura e Urbanismo e Geografia, Universidade Federal de Mato Grosso do Sul, Cidade Universitária, s/n, 79070-900 Campo Grande, MS, Brazil.

Characterized by fluvio-alluvial sedimentation processes, the heterogeneity in the Pantanal Basin allows its division in several sub-regions, which present natural characteristics of their own. It is possible to find in the literature different proposals to subdivide the Pantanal plain, which vary in total area and number of sub-regions. Each author uses specific criteria - mainly vegetation, soil and humidity - in his delimitation, but does not consider the tectonic aspects of the basin. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170697DOI Listing
April 2019
1 Read

Reproductive aspects of the semi-aquatic snake Erythrolamprus miliaris (Dipsadidae: Xenodontini) in the state of Rio de Janeiro, southeastern Brazil.

An Acad Bras Cienc 2019 8;91(1):e20170657. Epub 2019 Apr 8.

Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Estado do Rio de Janeiro, Avenida Pasteur, 458, Urca, 22290-255 Rio de Janeiro, RJ, Brazil.

We analyzed some aspects of reproduction and sexual dimorphism of the semi-aquatic dipsadid snake Erythrolamprus miliaris in the state of Rio de Janeiro, southeastern Brazil. We detected sexual dimorphism in body size (snout-vent length), with females averaging larger than males, but no sexual dimorphism in the relative length of the tail. Oviductal eggs and secondary follicles were found in all seasons, suggesting that female reproductive cycles are continuous, in spite of the tropical seasonal climate in the region. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170657DOI Listing
April 2019
1 Read

Urotrema macrotestis and Urotrema scabridum (Digenea: Urotrematidae) parasitizing bats (Mammalia: Chiroptera) in Brazil.

An Acad Bras Cienc 2019 Mar 21;91(1):e20180648. Epub 2019 Mar 21.

São Paulo State University/UNESP, Institute of Bioscience, Rua Professor Doutor Antônio Celso Wagner Zanin, s/n, 18618-689 Botucatu, SP, Brazil.

Urotrema scabridum Braun 1900 and Urotrema macrotestis Mané-Garzón and Telias 1965 are reported from the small intestine of Eumops glaucinus (Wagner, 1843). The species were differentiated by the body width, the size and position of acetabulum, the size of testis, the caecal termination, and the distribution of vitellarium. The present study expands the distribution and the hosts of both species in Minas Gerais State and reports U. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201820180648DOI Listing

Chemical diversity of the volatiles of Lippia rotundifolia Cham. (Verbenaceae) in Minas Gerais, Brazil.

An Acad Bras Cienc 2019 Mar 21;91(1):e20180498. Epub 2019 Mar 21.

Instituto de Ciências Agrárias da Universidade Federal de Minas Gerais, Av. Universitária, 1000, Bairro Universitário, 39404-547 Montes Claros, MG, Brazil.

Lippia rotundifolia is an aromatic species, native and endemic to rocky fields, which are isolated by small mountains. It is little known about their chemical composition. Because of that we aimed to study the chemical diversity of volatiles released from rosemary leaves (Lippia rotundifolia Cham. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180498DOI Listing

6-Bromoindirubin-3'-oxime promotes osteogenic differentiation of canine BMSCs through inhibition of GSK3β activity and activation of the Wnt/β-catenin signaling pathway.

An Acad Bras Cienc 2019 Mar 21;91(1):e20180459. Epub 2019 Mar 21.

Key Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Animal Veterinary Medicine, Northwest A&F University, Yangling 712100, China.

This study aimed to investigate how 6-bromoindirubin-3'-oxime (BIO) increases the osteogenic differentiation of canine bone mesenchymal stem cells (BMSCs) and the role of the Wnt/β-catenin signaling pathway in this process. We mimicked the effect of Wnt by adding BIO to the culture medium of BMSCs and examined whether canonical Wnt signaling positively affects the differentiation of these cells into osteoblasts. Canine BMSCs were cultured with 0. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180459DOI Listing

High-fat diet and streptozotocin in the induction of type 2 diabetes mellitus: a new proposal.

An Acad Bras Cienc 2019 Mar 21;91(1):e20180314. Epub 2019 Mar 21.

Universidade Federal de Mato Grosso, Instituto de Ciências Exatas e da Terra, Departamento de Química, Laboratório de Bioquímica Pesquisa, Av. Fernando Correa da Costa, 2367, Boa Esperança, 78060-900 Cuiabá, MT, Brazil.

Our objective was to establish a diabetes mellitus type 2 (DM2) model in rats using a high-fat diet and streptozotocin (HF-STZ). Male Wistar rats (240-250g) were divided into a control group (commercial feed), and HF-STZ group, (66.5%-commercial feed, 13. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180314DOI Listing
March 2019
1 Read

First record of Utetheisa pulchella (Linnaeus, 1758) (Lepidoptera: Erebidae: Arctiinae) in Brazilian Amazon: implications for conservation.

An Acad Bras Cienc 2019 Mar 21;91(1):e20180262. Epub 2019 Mar 21.

Embrapa Cerrados, Rodovia BR-020, Km 18, 73310-970 Planaltina, DF, Brazil.

The crimson speckled moth, Utetheisa pulchella (Linnaeus, 1758), is recorded in Brazilian Amazon for the first time. A moth (male) was collected with light trap in a multiple cropping area, in Mojuí dos Campos municipality, Pará State, Brazil. This record expands the area of occurrence and distribution of this rare species in the Neotropical Region. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180262DOI Listing
March 2019
1 Read

An overview of inventories of gall-inducing insects in Brazil: looking for patterns and identifying knowledge gaps.

An Acad Bras Cienc 2019 Mar 21;91(1):e20180162. Epub 2019 Mar 21.

Institute of Biology, Universidade Federal de Uberlândia, C.P. 593, 38400-462 Uberlândia, MG, Brazil.

We compiled published Brazilian gall-inducing insect inventories aiming to understand trends and biases in this field research and to investigate the factors that potentially explain the diversity of gall-inducing insects among different sampling sites. A total of 51 studies with gall-inducing insect inventories were compiled for Brazil, which sampled 151 sites in 88 municipalities, 13 states and five regions. The number of papers published on gall-inducing insects per year has increased over the last 30 years, being Cecidomyiidae (Diptera) the main galling taxon, Fabaceae the main host-plant family and Protium heptaphyllum (Burseraceae) the most important super-host species in these inventories. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180162DOI Listing

Cnidom variation through distinct developmental stages in the sea anemone Aulactinia marplatensis (Zamponi, 1977) (Cnidaria: Actiniaria).

An Acad Bras Cienc 2019 Mar 21;91(1):e20171039. Epub 2019 Mar 21.

Laboratorio de Biología de Cnidarios, Instituto de Investigaciones Marinas y Costeras/IIMyC, Facultad de Ciencias Exactas y Naturales/CONICET, Universidad Nacional de Mar del Plata, Funes, 3250, 7600 Mar del Plata, Argentina.

The cnidae are the exclusive diagnostic structures of phylum Cnidaria. The inventory of all cnidae types of a particular species is called the cnidom. The study of cnidae has been widely addressed in all classes of cnidarians. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920171039DOI Listing

Public engagement in science: Mapping out and understanding the practice of science communication in Latin America.

An Acad Bras Cienc 2019 Mar 21;91(1):e20171000. Epub 2019 Mar 21.

Mestrado em Divulgação da Ciência, Tecnologia e Saúde, Casa de Oswaldo Cruz, Fundação Oswaldo Cruz e Instituto Nacional de Comunicação Pública da Ciência e Tecnologia, Avenida Brasil, 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil.

This article presents the results of a study aiming to map out the characteristics of science communication activities carried out in Latin America by different organizations. We looked at a general description of the activities (such as the kind of activities carried out, in which periodicity, the publics engaged in the activities, etc.) and the favorable and unfavorable existing conditions in the organizations (such as budget and planning, evaluation, as well as weakness and strengths). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920171000DOI Listing

Monitoring of air quality before the Olympic Games Rio 2016.

An Acad Bras Cienc 2019 Mar 21;91(1):e20170984. Epub 2019 Mar 21.

Pontifícia Universidade Católica do Rio de Janeiro/PUC-Rio, Rua Marquês de São Vicente, 225, Gávea, 22451-900 Rio de Janeiro, RJ, Brazil.

For the accomplishment of Olympic and Paralympic Games in Rio de Janeiro city (Rio 2016), the government of the Rio de Janeiro state has undertaken to monitor air quality before and during the events. In Beijing, China, and Athens, Greece, the air quality was monitored in Olympic venues in order to evaluate the athletes' performance in relation to the environment in which they were exposed. This study has the same proposal to Rio de Janeiro, Brazil. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170984DOI Listing

Distribution, diversity, and habitat partitioning of Scolecitrichidae species (Copepoda: Calanoida) down to 1,200 m in the Southwestern Atlantic Ocean.

An Acad Bras Cienc 2019 Mar 21;91(1):e20170973. Epub 2019 Mar 21.

Laboratório Integrado de Zooplâncton e Ictioplâncton, Departamento de Zoologia, Instituto de Biologia, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Avenida Prof. Rodolpho Rocco, 211, Bl. A, Sala A0-084, Ilha do Fundão, 21941-590 Rio de Janeiro, RJ, Brazil.

In this study, we analyzed the main distributional features of Scolecitrichidae species in the Southwestern Atlantic Ocean (northern region of Rio de Janeiro State) and determined and described their habitat partitioning, based on a night series of stratified samplings down to a depth of 1,200 m. A total of 18 species from seven genera were identified and grouped according to their depth distribution. Distinct vertical patterns of total density, richness, diversity, and evenness were observed, with a decrease in density and an increase in diversity and richness with increasing depth. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170973DOI Listing

Litter Size Reduction Induces Metabolic and Histological Adjustments in Dams throughout Lactation with Early Effects on Offspring.

An Acad Bras Cienc 2019 Mar 21;91(1):e20170971. Epub 2019 Mar 21.

Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Rua Universitária, 2069, Jardim Universitário, 85819-110 Cascavel, PR, Brazil.

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) content, histological analysis of the pancreas, mammary gland (MG) and brown adipose tissue (BAT) as well as, plasma parameters and milk composition were measured in dams and pups on the 7th, 14th and 21st days of lactation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170971DOI Listing
March 2019
1 Read

Surface modification of activated carbon by corona treatment.

An Acad Bras Cienc 2019 Mar 21;91(1):e20170947. Epub 2019 Mar 21.

Departamento de Ciências Florestais, Universidade Federal de Lavras, Campus Universitário, Av. Doutor Sylvio Menicucci, 1001, 37200-000 Lavras, MG, Brazil.

Surface modification may lead activated carbon (AC) to take on different properties. This study aimed to promote surface modification of activated carbons using corona treatment (electrical discharge). In this study, powdered commercial activated carbon was used. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170947DOI Listing

Sambucus australis Modulates Inflammatory Response via Inhibition of Nuclear Factor Kappa B (NF-kB) in vitro.

An Acad Bras Cienc 2019 Mar 21;91(1):e20170831. Epub 2019 Mar 21.

Laboratório de Imunofarmacologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Avenida Reitor Calmon, s/n, Vale do Canela, 41110-100 Salvador, BA, Brazil.

Medicinal plants have long been used as an alternative to traditional drugs for the treatment of inflammatory conditions due to the classical side effects and restricted access of various commercially available drugs, such as steroids (GCs) and nonsteroidal anti-inflammatory drugs (NSAIDs). Sambucus australis is a Brazilian herb that is commonly used to treat inflammatory diseases; however, few studies have examined the use of this species in the treatment of inflammatory conditions. The present study aims to evaluate the potential anti-inflammatory activity of S. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170831DOI Listing
March 2019
1 Read

Reproductive biology of a viviparous lizard (Mabuya dorsivittata) from the subtropical Wet Chaco of Argentina: geographical variations in response to local environmental pressures.

An Acad Bras Cienc 2019 Mar 21;91(1):e20170817. Epub 2019 Mar 21.

Instituto de Investigaciones en Biodiversidad y Medioambiente/INIBIOMA, Consejo Nacional de Investigaciones Científicas y Técnicas/CONICET, Universidad Nacional del Comahue, San Carlos de Bariloche, 8400 Río Negro, Argentina.

Herein we studied the reproductive biology of a viviparous lizard (Mabuya dorsivittata) from the Wet Chaco region (northeastern Argentina) and compared the results with other populations from the Espinal (central Argentina) and the Atlantic Forest (southeastern Brazil), and with other Neotropical species of Mabuya to better understand the possible causes of its reproductive phenotype variation. Males and females of M. dorsivittata from the Wet Chaco exhibited associated, seasonal, and annual reproductive cycles. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170817DOI Listing

The performance of the (U+Th)/He thermochronology laboratory at UNESP Rio Claro, Brazil.

An Acad Bras Cienc 2019 Mar 21;91(1):e20170397. Epub 2019 Mar 21.

Scottish Universities Environmental Research Centre-Isotope Geosciences Unit, SUERC, East Kilbride, G75 0QF, Scotland, UK.

We have developed the first laboratory for (U-Th-Sm)/He thermochronology measurements in South America. Helium is measured using a high-sensitivity magnetic sector mass spectrometer (GVI-Helix-SFT) and a double focusing single collector inductively coupled plasma mass spectrometer (Thermo Scientific ELEMENT2) is used for U, Th and Sm determinations. Repeated analyses of fragments of Durango fluorapatite crystals yields an average age of 31. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170397DOI Listing

Morphometric variation in pink shrimp populations at Rio de Janeiro coast (SE Brazil): are they really similar in closer areas?

An Acad Bras Cienc 2019 Mar 18;91(2):e20180252. Epub 2019 Mar 18.

Programa de Pós-Graduação em Zoologia do Museu Nacional, Universidade Federal do Rio de Janeiro (PPGZoo/MN-UFRJ), Departamento de Biologia Marinha, Instituto de Biologia, Av. Pau-Brasil, 211, Prédio do CCS - Bloco A, Ilha do Fundão, 21949-900 Rio de Janeiro, RJ, Brazil.

Farfantepenaeus brasiliensis and F. paulensis are the most exploited shrimps of SE-S Brazilian coast. Our aim was to verify if adjacent nursery areas with different environmental condition (Sepetiba and Guanabara bays, SE Brazil) influence on shrimp populations (eg, CPUE) and body shapes. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180252DOI Listing
March 2019
1 Read

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.

An Acad Bras Cienc 2019 Feb 14;91(1):e20180313. Epub 2019 Feb 14.

Laboratório de Evolução e Biologia Evolutiva, Programa de Pós-Graduação em Biologia Vegetal, Universidade Federal de Mato Grosso do Sul, Avenida Costa e Silva, s/n, 79070-900 Campo Grande, MS, Brazil.

Specimens of Leptogium collected in ten localities from the State of Rio Grande do Sul were studied. Sixteen species were found of 28 records mentioned to the state, which represents around 57% of the Leptogium diversity known for Rio Grande do Sul. Leptogium exaratum is proposed as a new species. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180313DOI Listing
February 2019
1 Read

Community ecology of parasites in four species of Corydoras (Callichthyidae), ornamental fish endemic to the eastern Amazon (Brazil).

An Acad Bras Cienc 2019 Feb 14;91(1):e20170926. Epub 2019 Feb 14.

Embrapa Amapá, Rodovia Juscelino Kubitschek, 2600, 68903-419 Macapá, AP, Brazil.

This study compared the parasites community in Corydoras ephippifer, Corydoras melanistius, Corydoras amapaensis and Corydoras spilurus from tributaries from the Amapari River in State of Amapá (Brazil). A total of 151 fish of these four ornamental species were examined, of which 66.2% were parasitized by one or more species, and a total of 732 parasites were collected. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170926DOI Listing
February 2019
2 Reads

Comparative anatomy and histochemistry of the leaf blade of two species of Artocarpus.

An Acad Bras Cienc 2019 Feb 14;91(1):e20170922. Epub 2019 Feb 14.

Laboratório de Farmacognosia, Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco, Av. Prof. Arthur de Sá, s/n, Cidade Universitária, 50740-521 Recife, PE, Brazil.

In Brazil, there are two species of Artocarpus that were introduced: Artocarpus altilis (Parkinson) Fosberg, known as fruta-pão, and Artocarpus heterophyllus Lam., known as jaca. Both are used as food and medicine. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201820170922DOI Listing
February 2019
2 Reads

Porcupine gnaw marks on a Late Pliocene bone from the Upper Siwaliks exposed near Village Khetpurali (Haryana, India).

An Acad Bras Cienc 2019 Feb 14;91(1):e20170910. Epub 2019 Feb 14.

Department of Anthropology, Panjab University, Sector 14, 160 014 Chandigarh, India.

Bone accumulation by porcupines at archaeological sites is well known. However, in paleontological sites such a taphonomical occurrence is rather rare. We here report porcupine (Hystrix sp. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170910DOI Listing
February 2019
2 Reads
0.875 Impact Factor

Oregano essential oil (Origanum vulgare) to feed laying hens and its effects on animal health.

An Acad Bras Cienc 2019 Feb 14;91(1):e20170901. Epub 2019 Feb 14.

Departmento de Zootecnia, Universidade do Estado de Santa Catarina/UDESC, Rua Beloni Trombeta Zanin, 608E, Santo Antônio, 89815-630 Chapecó, SC, Brazil.

This study evaluated the effect of oregano essential oil added to the feed of commercial laying hens. This research was focused on the analysis of biochemical changes linked to hepatic function, and protein and lipid metabolism. It was used 240 laying hens (59 weeks-old) distributed in a completely randomized design of six treatments (five repetitions with eight birds each). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920170901DOI Listing
February 2019
4 Reads