Invert sugar induces glucose intolerance but does not cause injury to the pancreas nor permanent DNA damage in rats.
In this study, invert sugar altered the glucose metabolism and induced primary DNA damage in blood, but did not cause significant damage to the pancreas or liver, and neither changes in the levels of oxidative stress or permanent DNA damage. PMID: 32696841 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - July 24, 2020 Category: Science Authors: Molz P, Molz WA, Dallemole DR, Santos LFS, Salvador M, Cruz DB, PrÁ D, Franke SIR Tags: An Acad Bras Cienc Source Type: research

Acute effects of expiratory positive pressure on autonomic cardiac modulation during spontaneous and slow deep breathing in COPD patients.
Abstract AIM: to evaluate the acute effects of expiratory positive airway pressure on cardiac autonomic modulation in chronic obstructive pulmonary disease patients during spontaneous breathing and slow deep breathing. METHODS: 17 patients were evaluated. The R-R intervals were collected (Polar® S810i) during spontaneous breathing (10 minutes) and slow deep breathing (4 minutes), with and without 5 cmH2O expiratory positive airway pressure. Stable signals were analyzed by Kubios®. Heart rate variability indices were computed in time domain and in frequency domain. RESULTS: Expiratory positive air...
Source: An Acad Bras Cienc - July 24, 2020 Category: Science Authors: Silva ALGD, Goulart CL, Mansour KMK, Back GD, Cabiddu R, Trimer R, Borghi-Silva A Tags: An Acad Bras Cienc Source Type: research

Antioxidant potential and chemical characterization of bioactive compounds from a medicinal plant Colebrokea oppositifolia Sm.
Abstract Colebrookea oppositifolia is a highly used medicinal plant and an enriched source of essential oils. Therefore, the present study was designed with the aim to extract the chemical constituents and to evaluate its antioxidant potential. Fresh plant parts were subjected to the extraction of volatile chemical constituents by maceration using n-hexane as the menstruum. The resulting n-hexane fractions were purified and then subjected to GC-MS and FTIR analysis. In-vitro antioxidant abilities were evaluated by, DPPH, total phenolic content (TPC), total flavonoid content (TFC) method against the standard soluti...
Source: An Acad Bras Cienc - July 24, 2020 Category: Science Authors: Ishtiaq S, Hanif U, Shaheen S, Bahadur S, Liaqat I, Awan UF, Shahid MG, Shuaib M, Zaman W, Meo M Tags: An Acad Bras Cienc Source Type: research

Transdermal patches of lidocaine/aspirin ionic liquid drug-loaded gelatin/polyvinyl alcohol composite film prepared by freeze-thawed procedure.
The objectives of this study are to prepare a 5 wt% lidocaine/aspirin ionic liquid drug-loaded gelatin/polyvinyl alcohol composite film using a freeze-thaw procedure and to evaluate their physicochemical characteristics, in vitro drug release, and stability. Lidocaine/aspirin ionic liquid drugs can be prepared by an ion-pair reaction between the hydrochloride salts of lidocaine and the sodium salts of aspirin, which showed a significant change in their thermal properties when compared to those pure drugs. The results showed that a transdermal patch could feasibly be used in pharmaceutical transdermal patches with good phys...
Source: An Acad Bras Cienc - July 24, 2020 Category: Science Authors: Maneewattanapinyo P, Yeesamun A, Watthana F, Panrat K, Pichayakorn W, Suksaeree J Tags: An Acad Bras Cienc Source Type: research

Under the light: high prevalence of haemoparasites in lizards (Reptilia: Squamata) from Central Amazonia revealed by microscopy.
This report is the first survey of haemoparasites in lizards in the study region. It revealed a high diversity of lizard haemoparasites and highlights the need to understand their impacts on hosts. PMID: 32696845 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - July 24, 2020 Category: Science Authors: Picelli AM, Ramires AC, Masseli GS, Pessoa FAC, Viana LA, Kaefer IL Tags: An Acad Bras Cienc Source Type: research

A new species of Cosmocercoides (Nematoda; Cosmocercidae) and other helminths in Leptodactylus latrans (Anura; Leptodactylidae) from Argentina.
Abstract Cosmocercoides latrans n. sp. (Cosmocercidae) from the small intestine of Leptodactylus latrans (Anura: Leptodactylidae) from Northeastern Province of Buenos Aires, Argentina is described. The new species can be distinguished from their congeners by a combination of the characters, among which stands out the number of rosette papillae, the lack of gubernaculum and the presence of lateral alae in both sexes. There are over 20 species in the genus Cosmocercoides, and Cosmocercoides latrans n. sp. represents the third species from the Neotropical realm and the second for Argentina. Additionally, seven previo...
Source: An Acad Bras Cienc - July 17, 2020 Category: Science Authors: Draghi R, Drago FB, Lunaschi LI Tags: An Acad Bras Cienc Source Type: research

Cerrado physiognomies in Chapada das Mesas National Park (Maranh ão, Brazil) revealed by patterns of floristic similarity and relationships in a transition zone.
We report 50 new records of species for Maranhão, four new records for the Cerrado biome and one vulnerable species. The separation of the gallery forest from cerradão and typical cerrado by ordination shows the influence of water availability and soil characteristics on floristic composition. In Cerrado ecotonal regions, such as Mato Grosso and Maranhão, the presence of species shared with the Amazon is expressive. In addition to the Amazon, physiognomies had greater floristic connection with the Caatinga flora. Our data demonstrates that the marginal areas of the Brazilian Cerrado may present high sp...
Source: An Acad Bras Cienc - July 17, 2020 Category: Science Authors: Ferraz TM, Saraiva RVC, Leonel LV, Reis FFD, Figueiredo FAMMA, Reis FO, Sousa JRP, Muniz FH Tags: An Acad Bras Cienc Source Type: research

The use of DEA as a tool to evaluate public expenditure on education: an analysis of the cities of the state of Rio de Janeiro.
This study concludes that cities that displayed a good performance are located in the least economically developed regions and that teachers' average salary is an important motivational factor. PMID: 32667507 [PubMed - as supplied by publisher] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - July 17, 2020 Category: Science Authors: Mota TRA, Meza LA Tags: An Acad Bras Cienc Source Type: research

Evolutionary mechanisms for camouflage in Cladomorphus phyllinus (Phasmatodea): A reflection on the role of evidence for hypotheses proposition.
Abstract We address and discuss some of the many flaws exhibited by Costa et al. (2019) which tried to explain the twig-like camouflage of Cladomorphus phyllinus. Given the lack of both empirical and theoretical underpinnings in Costa et al. (2019), we call into question the validity of their conclusions, in particular, that horizontal gene transfer is a causal mechanism for the camouflage in C. phyllinus. PMID: 32667508 [PubMed - as supplied by publisher] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - July 17, 2020 Category: Science Authors: Forero D, Campos LA, Castro-Huertas V, Bianchi FM Tags: An Acad Bras Cienc Source Type: research

Hydrolysis of sweet potato (Ipomoea batatas (L.) Lam.) flour by Candida homilentoma strains: effects of pH and temperature using Central Composite Rotatable Design.
Abstract The current study focuses on the evaluation of culture parameters on the enzymatic hydrolysis of Ipomoea batatas (L.) Lam flour by Candida homilentoma strains. A 2-factor-5-level CCRD was used to evaluate the effect of pH and temperature on the hydrolysis process. For the S-47 strain, pH and both studied parameters were significant at 48 h and 96 h, respectively. Regarding S-81 strain, temperature was the only factor affecting the process, at 96 hours. The regression models were significant, and no lack of fit was observed for them. PMID: 32667509 [PubMed - as supplied by publisher] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - July 17, 2020 Category: Science Authors: Coelho ALS, Arraes AA, Abreu-Lima TL, Carreiro SC Tags: An Acad Bras Cienc Source Type: research

Phytase and xylanase in diets with nutritional adjustments and their effects on serum biochemistry, morphometry and intestinal health of broilers.
Abstract To examine the association between phytase and xylanase in diets with nutritional adjustments on intestinal morphometry, serum biochemistry and microbiology of broilers, 250 broilers were evaluated in a completely randomized design with five treatments and five replicates. The following treatments were tested: positive control diet - without phytase or xylanase; negative control diet - with an energy reduction of 100 kcal/kg, without phytase or xylanase; and three diets containing xylanase and phytase and energy reductions of 50, 100 and 150 Kcal/kg. For all energy-reduced diets, the nutritional matrix of...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Chaves NRB, Nascimento KMRS, Kiefer C, Rosa MS, Feitas HB, Paiva LL, Silva TR, Silva LAR, Macie VA, Leal CRB, Souza AI, Zanoelo FF Tags: An Acad Bras Cienc Source Type: research

Weight and body yield of selectively bred tambaqui (Colossoma macropomum) farmed in different environments.
The objective of this study was to evaluate the weight and body yield of two families of selectively bred tambaqui farmed in different environments. Two families (FA and FB) were reared in the municipalities (environments) of Santo Antônio de Leverger (MT) and Campo Grande (MS) for 431 days. Pre-bleeding weight, body yield, and the interaction effect between families and environments on these traits were investigated. No interaction effect between the evaluated families and environments was detected on the evaluated traits. Pre-bleeding weight did not differ significantly between the families in MT (FA: 2,421.7g; FB:...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Marcos R, CorrÊa Filho RAC, Abreu JS, Seraphim GN, Silva ACC, Fornari DC, Ribeiro RP, Ferreira YA, Gama KFS, Povh JA Tags: An Acad Bras Cienc Source Type: research

Diversity and phenology of epigeal Coleoptera assemblages in lettuce and tomato crops in Northern Buenos Aires province, Argentina.
We examined the community structure of epigeal Coleoptera assemblages of Curculionidae, Carabidae, Staphylinidae and Coccinellidae species, in lettuce and tomato crops located in Northern Buenos Aires province, over a 3-year sampling period (2010 to 2013) by using pit-fall traps. Crop species and cycles, and phytosanitary measures (conventional and organic farming), were main factors considered as influencing the insect species composition, abundance and seasonal occurrence in the assemblages. Seventy coleopteran species were identified. The curculionids Ceutorhynchini sp. and Phyrdenus muriceus (Germar), the carabid Scari...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Rouaux J, Cabrera N, MartÍnez AS, Posse MC, Luna MG Tags: An Acad Bras Cienc Source Type: research

Dispersal of Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) in cabbage, cucumber, and sweet corn.
; TPP Abstract Abstract: The dispersion capacity is fundamental to establish a biological control program with parasitoids. This information is used to determine the efficiency and the number of release points. Thus, the objective of this work was to determine the dispersion and to estimate the number of release points of Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae), in sweet corn, cucumber and cabbage in the Ceará State. The experiments were carried out in areas of maize with four leaf pairs (V4) and eight leaves pair (V8), stacked and cabbage. Unviable eggs of an alternative host we...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Oliveira RCM, Pastori PL, Barbosa MG, Pereira FF, Melo JWS, AndrÉ TPP Tags: An Acad Bras Cienc Source Type: research

Essential oil from Ocimum basilicum improves growth performance and does not alter biochemical variables related to stress in pirarucu (Arapaima gigas).
In conclusion, the addition of 2.0 mL EOOBkg diet-1 is recommended for pirarucu juveniles, due to improved growth performance, and this supplementation did not compromise the homeostasis of fish rearing in a high stocking density. PMID: 32638862 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Chung S, Lemos CHDP, Teixeira DV, Fortes-Silva R, Copatti CE Tags: An Acad Bras Cienc Source Type: research

Cymbopogon flexuosus essential oil as an additive improves growth, biochemical and physiological responses and survival against Aeromonas hydrophila infection in Nile tilapia.
The objective of the present study was to evaluate growth, biochemical, hematological and intestinal enzymes responses and survival of Nile tilapia juveniles fed a diet containing the essential oil of lemongrass Cymbopogum flexuosus (EOCF) and infected by Aeromonas hydrophila. Five diets were evaluated (in quadruplicate) with increasing levels of EOCF (0.0 - control; 0.25; 0.50; 1.0 and 2.0 mL kg diet-1). On day 45, eight fish per treatment were sampled and blood, liver and intestine samples were taken. Others eight fish per treatment were infected with A. hydrophila followed by a 15-day period of observation. Citral is th...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Souza EM, Souza RC, Melo JFB, Costa MMD, Souza SA, Souza AM, Copatti CE Tags: An Acad Bras Cienc Source Type: research

Effect of salinity on embryo-larval development of yellow clam Mesodesma mactroides (Reeve, 1854) in laboratory.
This study assessed the effect of salinity on embryonic development, larval growth and survival of the yellow clam Mesodesma mactroides in laboratory. Embryos and larvae of M. mactroides were submitted and maintained at four different salinities: 20, 25, 30 and 35 ppt, to determine optimal conditions for the species. Through descriptive analysis, the results showed that the embryos tolerate salinities between 25 - 35 ppt, presenting fast metamorphoses at salinities 30 and 35 ppt, during experimental period of 27 hours. The same tolerance pattern was observed in larval stage (25 - 35 ppt), showing a better development in sa...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Santos JJS, Bernardes JP, RamÍrez JRB, Gomes CHAM, Romano LA Tags: An Acad Bras Cienc Source Type: research

High-throughput phenotyping of brachiaria grass seeds using free access tool for analyzing X-ray images.
This study confirmed that the methodology is efficient for obtaining morphometric data and tissue integrity data in Brachiaria ruziziensis seeds and that parameters such as relative density, integrated density, and seed filling are closely related to the physiological attributes of seed quality. PMID: 32638865 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Medeiros AD, Silva LJD, Pereira MD, Oliveira AMS, Dias DCFS Tags: An Acad Bras Cienc Source Type: research

Isolation and selection of endophytic spore-forming bacteria with plant growth promoting properties isolated from Ilex paraguariensis St. Hil. (yerba mate).
In conclusion, further studies to determine the ability of these isolates to adapt to the climatic conditions and to survive amidst the native soil microflora in yerba mate cultivated native soils, will be crucial for developing such strains as biofertilizer. PMID: 32638866 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Laczeski ME, Onetto AL, Cortese IJ, Mallozzi GY, Castrillo ML, Bich GÁ, Gortari F, Zapata PD, Otegui MB Tags: An Acad Bras Cienc Source Type: research

Reaction Mechanism of Magnesium in Roasting of Vanadium Slag.
Abstract The influence of magnesium on roasting vanadium slag was investigated by simulating the roasting process of vanadium by mixing V2O5 and MgO. The calcination products of V2O5 reacted with MgO at different temperatures which were characterized by X-ray diffraction (XRD), Thermogravimetry-differential scanning calorimetry (TG-DSC) and scanning electron microscope (SEM). There were two mass loss intervals, three endothermic peaks and one exothermic peak appearing during the reaction by the integrated thermal analysis as the temperature increased from room temperature to 1273.15 K. The samples of mixed V2O5 an...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Dong L, Xiangxin X, He Y Tags: An Acad Bras Cienc Source Type: research

An Overview on the Development of Electrochemical Capacitors and Batteries - part II.
Abstract In the second part of the review on electrochemical energy storage, the devolvement of batteries is explored. First, fundamental aspects of battery operation will be given, then, different materials and chemistry of rechargeable batteries will be explored, including each component of the cell. In negative electrodes, metallic, intercalation and transformation materials will be addressed. Examples are Li or Na metal batteries, graphite and other carbonaceous materials (such as graphene) for intercalation of metal-ions and transition metal oxides and silicon for transformation. In the positive electrode sec...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Martins VL, Neves HR, Monje IE, Leite MM, Oliveira PFM, Antoniassi RM, Chauque S, Morais WG, Melo EC, Obana TT, Souza BL, Torresi RM Tags: An Acad Bras Cienc Source Type: research

An Overview on the Development of Electrochemical Capacitors and Batteries - Part I.
Abstract The Nobel Prize in Chemistry 2019 recognized the importance of Li-ion batteries and the revolution they allowed to happen during the past three decades. They are part of a broader class of electrochemical energy storage devices, which are employed where electrical energy is needed on demand and so, the electrochemical energy is converted into electrical energy as required by the application. This opens a variety of possibilities on the utilization of energy storage devices, beyond the well-known mobile applications, assisting on the decarbonization of energy production and distribution. In this series of ...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Martins VL, Neves HR, Monje IE, Leite MM, Oliveira PFM, Antoniassi RM, Chauque S, Morais WG, Melo EC, Obana TT, Souza BL, Torresi RM Tags: An Acad Bras Cienc Source Type: research

Climatological aspects and changes in temperature and precipitation extremes in Vi çosa-Minas Gerais.
Climatological aspects and changes in temperature and precipitation extremes in Viçosa-Minas Gerais. An Acad Bras Cienc. 2020;92(2):e20190388 Authors: Avila-Diaz A, Justino F, Lindemann DS, Rodrigues JM, Ferreira GR 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 expansion and population growth since the 1960s. Thus...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Avila-Diaz A, Justino F, Lindemann DS, Rodrigues JM, Ferreira GR Tags: An Acad Bras Cienc Source Type: research

Aging: a New Perspective on an Old Issue.
Abstract The world is undergoing a profound demographic change with a rapid increase in the prevalence of aged individuals. The finitude of life, the burden of senescence and the search for strategies to prolong human life span have troubled humanity since ancient times. However, only in the past few decades we started to understand how organisms age and how life span can be manipulated. Here I give an historical perspective of the aging field and conclude with the notion that aging is controlled by signals from the adipose tissue which are tightly controlled by small non-coding RNAs such as miRNAs. PMID: 326...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Mori MA Tags: An Acad Bras Cienc Source Type: research

Involvement of redox status and the nuclear-related factor 2 in protecting against cadmium-induced renal injury with Sana Makki (Cassia senna L.) pre-treatment in male rats.
This study was designed to investigate the potential defensive strategy of Sana Makki extract (SME) against Cd-induced in vivo nephrotoxicity and its underlying mechanisms. Male albino rats were used in a thirty days study comparing control, SME-treated, CdCl2-treated, and combined SME and Cd treatment. Pre-treatment with SME significantly reduced serum kidney biomarkers (urea and creatinine), the concentration of renal KIM-1, and kidney index values. Additionally, SME also attenuated CdCl2-induced oxidative and nitrosative stress in renal tissue; significantly reducing malondialdehyde (MDA) and nitric oxide (NO) concentra...
Source: An Acad Bras Cienc - July 9, 2020 Category: Science Authors: Albasher G, Albrahim T, Aljarba N, Alharbi RI, Alsultan N, Alsaiari J, Rizwana H Tags: An Acad Bras Cienc Source Type: research

Productive, metabolic and anatomical parameters of menthol mint are influenced by light intensity.
Abstract The cultivation of aromatic species to obtain essential oils has great economic importance, presenting an increasing demand from different industrial sectors, especially to menthol mint (Mentha arvensis L.) essential oil, rich in menthol (70-80%). Consortium cultivation has been an important practice in agricultural systems whose land use is necessary, consequently promoting strong competition for light in reduced space. Thus, this study aimed verifying if different light intensities might promote chemical, metabolical and anatomical alterations in menthol mint. Plants were grown in greenhouse at differen...
Source: An Acad Bras Cienc - July 2, 2020 Category: Science Authors: Souza MAA, Braga RP, Santos AMD, Rocha JF, Castro RN, Fernandes MS, Souza SR Tags: An Acad Bras Cienc Source Type: research

Metagenomic analysis of the bacterial microbiota associated with cultured oysters (Crassostrea sp.) in estuarine environments.
Abstract In this work, we identified the bacterial microbiota associated with farmed oystersin estuarine regions of four states in the north eastern region of Brazil. During the drought and rainy seasons, for eight months, twenty oysters were sampled seasonally from seven different marine farms. In the laboratory, DNA extraction, amplification, and sequencing of the 16S rRNA gene were performed to establish the taxonomic units. We identified 106 genera of bacteria belonging to 103 families, 70 orders, 39 classes, and 21 phyla. Out of the total, 40 of the genera represented bacteria potentially pathogenic to humans...
Source: An Acad Bras Cienc - July 2, 2020 Category: Science Authors: Horodesky A, Castilho-Westphal GG, Pont GD, Faoro H, Balsanelli E, Tadra-Sfeir MZ, Cozer N, Pie MR, Ostrensky A Tags: An Acad Bras Cienc Source Type: research

Dwarf cashew antibiotic and antixenotic resistance to the whitefly Aleurodicus cocois.
Abstract The aim of the present study was to identify Aleurodicus cocois resistant genotypes among five dwarf cashew clones available in the germplasm bank of Embrapa/Centro Nacional de Pesquisa Agroindústria Tropical. Free-choice and no-choice tests were applied in order to evaluate the relative attractiveness of the clones and the oviposition preferences, egg-to-adult development times and adult emergence rates of the pest. In comparison with other clones, PRO143/7 exhibited the lowest attraction to the whitefly and was least preferred for oviposition in the free-choice test. Conversely, CCP76 attracted t...
Source: An Acad Bras Cienc - July 2, 2020 Category: Science Authors: Goiana ESS, Dias-Pini NS, Vidal-Neto FC, Gomes Filho AA, Silva CSBD, Saraiva WVA Tags: An Acad Bras Cienc Source Type: research

Individual selection of the first backcross generation of passion fruit potentially resistant to the fruit woodiness disease.
This study was thus developed to estimate genetic parameters and predict the gain obtained from individual selection of genotypes in a population derived from backcrosses in passion fruit. The experiment was set up as a randomized block design with four replicates, involving five full-sib families (genotypes from the first backcross). Variance components and the genetic values were estimated for eight agronomic traits via the REML/BLUP procedure. For all traits, genotypic variance between the genotypes from the first backcross showed little contribution to the phenotypic variance. The low heritability estimates obtained fo...
Source: An Acad Bras Cienc - July 2, 2020 Category: Science Authors: Preisigke SC, Viana AP, Santos EA, Santos PRD, AmbrÓsio M, Santos VOD, Silva FAD Tags: An Acad Bras Cienc Source Type: research

Insecticidal properties and chemical composition of Piper aduncum L., Lippia sidoides Cham. and Schinus terebinthifolius Raddi essential oils against Plutella xylostella L.
rn FS Abstract In the laboratory, were evaluated the effects (residual contact and feeding deterrence) of the essential oils from the leaves of Piper aduncum, Lippia sidoides and Schinus terebinthifolius, as well as eleven selected constituents and binary blends of oils in different proportions against 3rd instar larvae of Plutella xylostella (L.). The Piper oil demonstrated the greatest toxicity (LC50 = 0.31 µL/mL) and feeding deterrence (DC50 = 1.08 µL/mL) between oils tested. Dillapiole (LC50 = 1.01 µL/mL; DC50 = 1.10 µL/mL) and carvacrol (LC50 = 6.03 µL/mL; DC50 = 0.075 µL/m...
Source: An Acad Bras Cienc - July 2, 2020 Category: Science Authors: AraÚjo MJC, Camara CAGD, Moraes MM, Born FS Tags: An Acad Bras Cienc Source Type: research

Hydrological modelling in small ungauged catchments.
Abstract The knowledge of the frequency and magnitude of low flow events is necessary to mitigate social, economic and ecological impacts inside the basin. However, the measurement network in Brazil is still restricted to large drainage areas, while basins with less than 300 km2 remain ungauged. Among different flow estimation methods, we used a rainfall-runoff model designed specifically to estimate flow rates during the dry season in small ungauged basins: the Silveira Method (SM). We tested the model performance for the São Bartolomeu river basin (Minas Gerais, Brazil), a small ungauged basin that experi...
Source: An Acad Bras Cienc - June 25, 2020 Category: Science Authors: Comini UB, Silva DDD, Moreira MC, Pruski FF Tags: An Acad Bras Cienc Source Type: research

Oil Bioremediation in a Tropical Contaminated Soil Using a Reactor.
Abstract This research was implemented in the Colombian Amazon forest area; to assess the effect of Tween-80® surfactant in the degradation of the Total Petroleum Hydrocarbons (TPH) in bioremediation treatments under aerobic conditions in the laboratory and pilot-scale. One control treatment, Natural Attenuation (AT) and four biostimulation treatments with leonardite with four different dosages of Tween-80® were proposed. The efficacy of organic stimulators and nonionic surfactant in soil microbiota was studied at laboratory and pilot scales, the latter in a passive aeration reactor. The test that presente...
Source: An Acad Bras Cienc - June 25, 2020 Category: Science Authors: Trejos-Delgado C, Cadavid-Restrepo GE, Hormaza-Anaguano A, Agudelo EA, Barrios-Ziolo L, Loaiza-Usuga JC, Cardona-Gallo SA Tags: An Acad Bras Cienc Source Type: research

Lecithochirium monticellii digenetic trematode parasites of Trichiurus lepturus (Actinopterygii) from the state of Rio de Janeiro, Brazil, with notes on its taxonomy.
Mattos DPBG Abstract Trichiurus lepturus (Actinopterygii, Perciformes) is a commercially and economically important fish. A total of 60 specimens of this cutlassfish were collected of the coast the municipalities of Niterói and Cabo Frio, state of Rio de Janeiro, Brazil. The fish were measured, necropsied, filleted and had their organs investigated for digenetic trematodes. Taxonomic identification was based on morphological and morphometric characters. The specimens of T. lepturus were parasitized with adult specimens of Lecithochirium monticellii. Parasite indices of prevalence, intensity, mean intensity,...
Source: An Acad Bras Cienc - June 25, 2020 Category: Science Authors: FranÇa LF, Knoff M, Fonseca MCGD, Gomes DC, Ferreira MS, Felizardo NN, SÃo Clemente SC, Mattos DPBG Tags: An Acad Bras Cienc Source Type: research

Ecological risk assessment of glyphosate in surface water when it is used to control floating aquatic macrophytes.
es AC Abstract The present work evaluated the ecological risk of glyphosate by its commercial formulation (Roundup Original®) used to control floating aquatic macrophytes. Exposure analysis and ecological effects were performed from microcosm studies. The risk characterization was performed based on the calculation of the risk quotient. The commercial formulation of glyphosate had high toxicity when it was assessed separately. On the other hand, ecotoxicological evaluation of water samples from microcosms did not present toxicity to any tested organisms, however, glyphosate application is recommended exclusive...
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: Maria MA, Castro SR, Lange LC, SiÚves CLF, Soares AC Tags: An Acad Bras Cienc Source Type: research

Biodiversity of parasites found in the trahira, Hoplias malabaricus (Bloch, 1794), collected in the Batalha River, Tiet ê-Batalha drainage basin, SP, Brazil.
Biodiversity of parasites found in the trahira, Hoplias malabaricus (Bloch, 1794), collected in the Batalha River, Tietê-Batalha drainage basin, SP, Brazil. An Acad Bras Cienc. 2020;92(2):e20180610 Authors: GiÃo T, Pelegrini LS, Azevedo RK, Abdallah VD Abstract Eighty-one Hoplias malabaricus specimens were collected between February 2014 and June 2016. A total of 29 species of metazoan parasites were found, 13 of which were identified as monogeneans, seven were digenean species, seven of which were nematodes, and two of which were from the subclass Hirudinea. The highest prevalence values...
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: GiÃo T, Pelegrini LS, Azevedo RK, Abdallah VD Tags: An Acad Bras Cienc Source Type: research

Localization and distribution of CCK-8, NPY, Leu-ENK-, and Ghrelin- in the digestive tract of Prochilodus lineatus (Valenciennes, 1836).
This study describes the histological characteristics and distribution of gastrointestinal tract endocrine cells (ECs) of Prochilodus lineatus (detritivorous fish) using immunohistochemical procedures. The digestive tract of P. lineatus was divided into seven portions: stomach (cardial and pyloric), pyloric caeca, and intestine (anterior, glandular, middle and posterior). A pool of specific antisera against cholecystokinin (CCK-8), -neuropeptide Y (NPY), -ghrelin (Ghre) and -leu-enkephalin (Leu-ENK) to identify ECs were used. According to the morphological characteristics of ECs, two different types were identified and cla...
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: Barrios CE, SantinÓn JJ, Domitrovic HA, SÁnchez S, HernÁndez DR Tags: An Acad Bras Cienc Source Type: research

Kinetics of colour and texture changes of button mushrooms (Agaricus bisporus) coated with chitosan during storage at low temperature.
S Abstract Kinetics of color and texture changes in coated button mushrooms were investigated as a function of coating agent's rate (1%, 2% and 3% w/v chitosan). The inner and outer surface colours of mushrooms in terms of CIELAB parameters L*, a*, b*, C*, ° h, ∆E, and Browning Index (BI), and their textural properties in terms of firmness were evaluated. The color values on both sides of the mushrooms except for L* values increased and their firmness decreased with the coating treatment. The color changes of the inner and outer surface of mushrooms and their texture changes followed zero-order reaction mo...
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: NAKILCIOğLU-TAş E, ÖTLEş S Tags: An Acad Bras Cienc Source Type: research

Hancornia speciosa serum fraction latex stimulates the angiogenesis and extracellular matrix remodeling processes.
In conclusion, SE latex fraction stimulates angiogenesis and may influence ECM remodeling. These properties may contribute to the wound healing process, and also confirm the widespread use of this plant. PMID: 32556049 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: D'Abadia PL, BailÃo EFLC, Lino JÚnior RS, Oliveira MG, Silva VB, Oliveira LAR, ConceiÇÃo EC, Melo-Reis PR, Borges LL, GonÇalves PJ, Almeida LM Tags: An Acad Bras Cienc Source Type: research

Kinetic modelling of vitamin C losses in fresh citrus juices under different storage conditions.
S Abstract The degradation kinetics of vitamin C in different citrus juice types (tangerine, grapefruit, orange and lime) were investigated during four hours storage at temperatures of 4 and 25°C under different storage conditions in terms of light and oxygen presence. The loss of vitamin C at each sample followed the first-order kinetic model. During storage, predicted half-life of vitamin C ranged from 137.586 to 467.486 min for tangerine; 105.444 to 203.100 min for grapefruit; 365.702 to 1044.668 min for orange and 540.076 to 722.016 min for lime juices. These results indicated that the highest and lowest...
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: NakilcioĞlu-TaŞ E, ÖtleŞ S Tags: An Acad Bras Cienc Source Type: research

Fish Assemblages in Pampean Streams (Buenos Aires, Argentina): Relationship to Abiotic and Anthropic Variables.
gni H Abstract The present study reported the effect of natural and anthropic environmental variables on the fish assemblages in the pampean streams, in the coastal strip along the Río de la Plata, Buenos Aires province, Argentina. Five streams were sampled at 12 sites surrounded by land devoted to different uses. A correspondence analysis sorted the streams into two groups: a less impacted group formed by sites surrounded by livestock- raising pastures and a more impacted one passing through urban sites and including a stream adjacent to a modest rural urbanization with a dairy in the stream's basin. The n...
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: Paracampo A, Marrochi N, GarcÍa I, Maiztegui T, Carriquiriborde P, Bonetto C, Mugni H Tags: An Acad Bras Cienc Source Type: research

Tangential distribution of cell type and direction selectivity in monkey area MT.
In conclusion, neuronal clustering associated with these four categories may be related to distinct MT functional circuits. PMID: 32556052 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: Diogo ACM, Lima B, Soares JGM, Gattass R Tags: An Acad Bras Cienc Source Type: research

Antiplatelet and antibacterial activities of Essential Oils obtained from rhizomes and leaves of Hedychium coronarium J. Koening.
Abstract Hedychium coronarium J. Koening, belonging to Zingiberaceae family, is a perennial herb with fleshly aromatic rhizomes. There are no information about the antiplatelet properties of essential oils (EOs) from rhizomes (HCR) and leaves (HCL) of this herb, additionally, there are reports about the antibacterial activity of the Zingiberaceae species, however, no studies have been carried out in the Colombian Amazon Region. The EOs were characterized by GC-MS, the antiaggregant activity was assessed by ADP and Collagen as platelet agonist and the antibacterial activity against E. faecalis and S. aureus were ev...
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: Guzman L, Neiro LS, Venturini W, Macias JPJ, Donoso W, Forero-Doria O Tags: An Acad Bras Cienc Source Type: research

COVID-19: therapeutic approaches description and discussion.
e;o F Abstract COVID-19 emerged in December 2019 in China, and since then, has disrupted global public health and changed economic paradigms. In dealing with the new Coronavirus, SARS-CoV-2, the world has not faced such extreme global fragility since the "Spanish flu" pandemic in 1918. Researchers globally are dedicating efforts to the search for an effective treatment for COVID-19. Drugs already used in a clinical setting for other pathologies have been tested as a new therapeutic approach against SARS-CoV-2, setting off a frenzy over the preliminary data of different studies. This work aims to compile ...
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: Trindade GG, Caxito SMC, Xavier AREO, Xavier MAS, BrandÃo F Tags: An Acad Bras Cienc Source Type: research

WMA: Wizard System Architecture for the execution of meta-analysis: A case study applied to verify the efficacy of fluquinconazole in the control of Asian soybean rust.
ri MG Abstract Meta-analysis is a probabilistic technique that combines results from several studies that approach the same topic and produce a result that sums up the whole. In the agricultural field, it is used to make empirical estimates of efficiency for the development of productivity and economic research on agriculture. Meta-analysis can be applied through software such as R, which is executed through commands, and produces results without providing user interactivity, nor does it reproduce a friendly and easy-to-understand interface. This paper presents the creation of a computer system, the WMA, which aim...
Source: An Acad Bras Cienc - June 12, 2020 Category: Science Authors: Delazeri BR, Silva SFD, Matos SN, Guimarães AM, Canteri MG Tags: An Acad Bras Cienc Source Type: research

Ichthyoplankton community structure on the shelf break off northeastern Brazil.
orn R Abstract Oceanographic features influence the early stages of fish to a high degree. We investigated the influence of continental shelf-slope gradient on the ichthyoplankton composition and distribution off Northeastern Brazil. Two oceanographic campaigns were performed during July-August 2010 and 2012. The samplings were performed along three transects composed by three stations, covering the continental shelf and slope areas. Abiotic data were obtained by an ADCP and a CTD. The ichthyoplankton was sampled through diurnal and nocturnal hauls using a 500-µm bongo net from 200 m to the surface. A total ...
Source: An Acad Bras Cienc - June 12, 2020 Category: Science Authors: Santana JR, Costa AESFD, Veleda D, Schwamborn SHL, Mafalda Júnior PO, Schwamborn R Tags: An Acad Bras Cienc Source Type: research

Diversity and turnover in a rocky shore intertidal community of an upwelling region (Arraial do Cabo, Brazil).
Carvalho WF Abstract The present study describes the community diversity and gives a seasonal distribution of an intertidal macroalgal assemblage at Prainha Beach, Arraial do Cabo City in Rio de Janeiro state, Brazil. Sampling was performed during four seasons of a 1-year period. Organisms were sampled and photographed using photoquadrats to quantify relative coverage. Ninety-six taxa of macroalgae were registered, including 23 chlorophytes, 19 ochrophytes, and 54 rhodophytes, while three barnacles, seven mollusks, one isopod, and one polychaete were recorded among the zoobenthos. In the upper intertidal zone, the...
Source: An Acad Bras Cienc - June 12, 2020 Category: Science Authors: Paula JC, Coração ACS, Lopes-Filho EAP, Silva RP, Santos LND, Carvalho WF Tags: An Acad Bras Cienc Source Type: research

Resource partitioning in a snake assemblage from east-central Argentina.
Abstract Two dimensions of the ecological niche (diet and habitat) of a snake assemblage from an endemic rich area in east-central Argentina, the Sierras de Ventania mountain chain, were analyzed. Field data collection was performed in 15-week study periods between 2010 and 2014. Snakes were hand-captured using transect surveys. Field observations on diet were analyzed together with stomach content data from museum specimens. Our results supported the partitioning of the snake assemblage by both habitat use and diet into at least three functional groups: species restricted to microhabitats under rocks and with a d...
Source: An Acad Bras Cienc - June 12, 2020 Category: Science Authors: DI Pietro DO, Williams JD, Cabrera MR, Alcalde L, Cajade R, Kacoliris FP Tags: An Acad Bras Cienc Source Type: research

Modeling the potential distribution of Epiphyllum phyllanthus (L.) Haw. under future climate scenarios in the Caatinga biome.
The objective of this study was to model the potential distribution of Epiphyllum phyllanthus (L.) Haw., a cactus that is native to the Caatinga biome, considering two possible future climate scenarios, to assess this species' spatio-temporal response to these climate change, and thus to evaluate the need or not for conservation measures. For this purpose, we obtained biogeographic information on the target species from biodiversity databases, choosing nine environmental variables and applying the MaxEnt algorithm. We considered the time intervals 2041-2060 and 2061-2080, centered on 2050 and 2070, respectively, and the gr...
Source: An Acad Bras Cienc - June 12, 2020 Category: Science Authors: Cavalcante AMB, Duarte AS, Ometto JPHB Tags: An Acad Bras Cienc Source Type: research

Remote observations with images from landsat satellites to determine the environmental impact of agrarian reform in the Brazilian Midwest between 2004 and 2014.
Abstract The Midwest region of Brazil has a high concentration of land and is the primary producer of grains and livestock in the country, activities with a negative impact on environment. Agrarian reform allows redistribution of land and reinforces family agriculture, which is considered to be favorable to environmental protection. The aim of this study was to use field and remote observations to verify the evolution of environmental preservation and land use in rural settlements in the Midwest region of Brazil. 54 settlements distributed in the region were analyzed. We used images from Landsat 5 satellite obtain...
Source: An Acad Bras Cienc - June 12, 2020 Category: Science Authors: Bacarji AG, Vilpoux OF, Paranhos Filho AC Tags: An Acad Bras Cienc Source Type: research

Antioxidant and anti-apoptotic effects of selenium nanoparticles against murine eimeriosis.
Abstract Eimeriosis is caused by a protozoan parasite of the genus Eimeria and infection affecting most domestic animal species. The aim of this research was to comprehend the impact of selenium nanoparticles (SeNPs) on eimeriosis induced by Eimeria papillata in mouse jejunum, and how they work as antioxidants and anti-apoptotic agents against eimeriosis. The numbers of meronts, gamonts, and developing oocysts of E. papillata reduced after the infected mice were treated with the SeNPs. The levels of malondialdehyde (MDA), nitric oxide (NO), and other oxidative stress-related molecules, such as glutathione (GS...
Source: An Acad Bras Cienc - June 12, 2020 Category: Science Authors: Alkhudhayri A, Al-Shaebi EM, Qasem MAA, Murshed M, Mares MM, Al-Quraishy S, Dkhil MA Tags: An Acad Bras Cienc Source Type: research