Potential of pepper plant accessions for ornamental purposes using diallel analysis.
rc;go MMD Abstract The genus Capsicum is cultivated in various parts of the world, with C. annuum showing high diversity and potential for ornamental purposes and genetic improvement. The aim of this work was to evaluate the combining ability and heterosis of seedling and plant traits in accessions of ornamental pepper and their hybrids. Seven accessions of C. annuum were handcrossed and twelve quantitative plant traits were evaluated. The data were subjected to analysis of variance, the Scott-Knott test and diallel analysis using Griffing's method I (fixed model). Heterosis and its components were also determined...
Source: An Acad Bras Cienc - December 13, 2019 Category: Science Authors: Pessoa AMS, Rêgo ERD, Santos CAPD, Carvalho MG, Mesquita JCP, Rêgo MMD Tags: An Acad Bras Cienc Source Type: research
Pterodactyloid pterosaur bones from Cretaceous deposits of the Antarctic Peninsula.
Sayão JM Abstract Fossil vertebrates from Antarctica are considerably rare, hampering our understanding of the evolutionary history of the biota from that continent. For several austral summers, the PALEOANTAR project has been carrying out fieldwork in the Antarctic Peninsula in search for fossils, particularly Cretaceous vertebrates. Among the specimens recovered so far are two bones referable to Pterosauria, more specifically to the Pterodacyloidea, the first volant reptiles from Antarctica to be fully described. MN 7800-V (part and counterpart) was recovered from a moraine at the Abernathy Flats (Santa M...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Kellner AWA, Rodrigues T, Costa FR, Weinschütz LC, Figueiredo RG, Souza GA, Brum AS, Eleutério LHS, Mueller CW, Sayão JM Tags: An Acad Bras Cienc Source Type: research
Practical rules for summing the series of the Tweedie probability density function with high-precision arithmetic.
Abstract For some ranges of its parameters and arguments, the series for Tweedie probability density functions are sometimes exceedingly difficult to sum numerically. Existing numerical implementations utilizing inversion techniques and properties of stable distributions can cope with these problems, but no single one is successful in all cases. In this work we investigate heuristically the nature of the problem, and show that it is not related to the order of summation of the terms. Using a variable involved in the analytical proof of convergence of the series, the critical parameter for numerical non-convergence...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Dias NL, Ribeiro PJ Tags: An Acad Bras Cienc Source Type: research
Effect of resin content and pressing temperature on banana pseudo-stem particle boards properties using full factorial design.
anzano-Santana PI Abstract The volume of global gross banana exports reached a record of 117.9 million tonnes in 2015 (FAO 2017), which agro-industrial wastes derived as the pseudo-stem, rachis and leaves do not have an industrial application instead they are discarded. This research study applies full factorial design and response surface methodology to determine the effect of pressing temperature and resin content on density (D), moisture (M), water absorption (WA), water swelling (WS), module of rupture (MOR), module of elasticity (MOE) and formaldehyde content (FC) of particle board made of banana pseudo-stem....
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Barragàn-Lucas AD, Llerena-Miranda C, Quijano-Avilés MF, Chóez-Guaranda IA, Maldonado-Guerrero LC, Manzano-Santana PI Tags: An Acad Bras Cienc Source Type: research
Genotoxicity, anti-melanoma and antioxidant activities of Hymenaea courbaril L. seed extract.
The objective of this study was to determine the cytotoxicity, genotoxicity, antigenotoxicity and antioxidant potentials of hydroethanolic extract from H. courbaril seeds. Therefore, for the cytotoxicity test an anti-melanoma assay was performed in B16F10 strain cells. The genotoxicity and antigenotoxicity was evaluated in bone marrow cells (Permit number: 002/2010) of mice, the antioxidant activity was determined by the DPPH test and the total flavonoid content was also determined. The hydroethanolic extract showed antigenotoxic effect and antioxidant activity. It was verified that total flavonoid content was 442.25&plusm...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Spera KD, Figueiredo PA, Santos PCE, Barbosa FC, Alves CP, Dokkedal AL, Saldanha LL, Silva LP, Figueiredo CR, Ferreira PC, Silva RMGD Tags: An Acad Bras Cienc Source Type: research
Microbiological Indicators of Soil Quality Under Native Forests are Influenced by Topographic Factors.
a FMS Abstract Several microbiological indicators of soil quality present high sensitivity, but little is known about the influence of topographic factors on them. This work aimed to evaluate variability of biological indicators of soil quality across a hillslope under native forest and the influence of topographic factors on them. Four positions on a hillslope were evaluated. Activity of the enzymes β-glucosidase, acid phosphatase, urease and fluorescein diacetate (FDA) hydrolysis were determined, as well as basal and substrate-induced respiration, and density of microorganisms: total bacteria, total fungi, ...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Teixeira AFS, Silva JS, Vilela LAF, Costa PF, Costa EMD, Guimarães AA, Santos JVD, Silva SHG, Carneiro MAC, Moreira FMS Tags: An Acad Bras Cienc Source Type: research
The effect of newly initiated exercise training on dynamic thiol / disulphide homeostasis in sedentary obese adults.
Abstract We studied dynamic thiol/disulphide homeostasis, an indicator of oxidative stress, to investigate the effects of newly initiated exercise training on sedentary obese adults. Seventeen sedentary obese adults and 15 normal-weight controls were included in the sample for this study. The obese adults were given a physical exercise training program that lasted twelve weeks. Before and after the exercise training program, blood samples were collected, and serum thiol/disulphide parameters were measured by using a novel technique. Before the start of the exercise training, it was observed that thiol/disulphide h...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Celik H, Kilic T, Kaplan DS, Eren MA, Erel O, Karakilcik AZ, Bagci C Tags: An Acad Bras Cienc Source Type: research
Evaluation of a rat model of exercise-induced fatigue using treadmill running with progressively increasing load.
In this study, changes in heart rate and behavioral indexes during exercise-induced fatigue were quantitatively analyzed in rats using heart rate telemetry and video methods respectively. The behavioral indexes were used as independent variables and the degree of fatigue was used as the forecast value. Ternary quadratic function curve fitting was used to deduce a formula to calculate a fatigue score: Y = 15.2548+0.4346∙xa-0.1154∙xb+0.6826∙xc+0.0044∙xa∙xb-0.0021∙xb∙xc-0.0013∙xc∙xa-0.0023∙xa2-0.0016∙xb2 (r2=0.906). It identified a linear relationship between heart rate and exercise intensity, with a pla...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Hou L, Li KE, Hu Y, Bian Y, Ji W, Shi K, Li Y, Chen M, Li J, Liu X, Qiao D Tags: An Acad Bras Cienc Source Type: research
Potential of predatory Neotropical ladybirds and minute pirate bug on strawberry aphid.
Abstract Laboratory trials were performed to determine the impact of three Neotropical predatory coccinellids (Cycloneda sanguinea, Eriopis connexa and Coleomegilla quadrifasciata) and a minute pirate bug (Orius insidiosus) on Chaetosiphon fragaefolii, an important strawberry aphid pest. The predation on C. fragaefolii nymphs and adults, as well as the time to the first attack of all predators were compared with predation on Aphis gossypii. Predator preferences for prey and aphid defensive behavior were also evaluated. Moreover, the effect of coccinellids on C. fragaefolii population growth was assessed in experim...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Francesena N, Rocca M, Rizzo E, Arneodo JD, Greco NM Tags: An Acad Bras Cienc Source Type: research
The protective effects of β-sitosterol and vermicularin from Thamnolia vermicularis (Sw.) Ach. against skin aging in vitro.
The protective effects of β-sitosterol and vermicularin from Thamnolia vermicularis (Sw.) Ach. against skin aging in vitro. An Acad Bras Cienc. 2019;91(4):e20181088 Authors: Haiyuan YU, Shen X, Liu D, Hong M, Lu Y 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 protective performance against skin aging was assayed by co-cul...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Haiyuan YU, Shen X, Liu D, Hong M, Lu Y Tags: An Acad Bras Cienc Source Type: research
Direct analysis of vicariance in Neotropical mayflies (Ephemeroptera).
We present eleven mayfly phylogenies, representing groups that evolved independently at least from the Jurassic (i.e., not a one-taxon history). With these groups, we conducted independent biogeographical analyses (using Vicariance Inference Program), and extracted the events that repeated in two or more clades. We found fifty-eight TVEs (Traceable Vicariant Events), from which four were found at least twice, thus constituting SVEs (Supported Vicariant Events). PMID: 31800701 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Molineri C, Nieto C, Domínguez E Tags: An Acad Bras Cienc Source Type: research
Range distribution and contributions to taxonomy of Elops smithi (ELOPIFORMES: ELOPIDAE).
This study presents the first record of Elops smithi for northern Brazil. The evidence suggests this species is being misidentified incorrectly as Elops saurus in estuaries of the Western Atlantic Ocean. Here, morphological, molecular, and cytogenetic evidence identified all ladyfish specimens from one estuary in the region as E. smithi. Thus, at least Elops smithi occurs in the northern coast of Brazil and it is recommended that specimens from this region identified as E. saurus be further investigated with genetic and cytogenetic tools in order to assure a correct species identification. PMID: 31800702 [PubMed...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Sousa RPC, Sodré D, Costa RMD, Vallinoto M, Oliveira EHC, Silva-Oliveira GC, Sampaio I, Guimarães-Costa A Tags: An Acad Bras Cienc Source Type: research
White sand vegetation in an Amazonian lowland under the perspective of a young geological history.
We examined floristic patterns to determine whether abundant species are more often generalists than the rarer one, by comparing the megafan environments and older basement rocks. We also investigated the pattern of species accumulation as a function of increasing sampling effort. All plant groups recorded a high proportion of generalist species on the megafan sediments compared to older basement rocks. The vegetation structure is controlled by topographic gradients resulting from the smooth slope of the megafan morphology and microreliefs imposed by various megafan subenvironments. Late Pleistocene-Holocene environmental ...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Rossetti DF, Moulatlet GM, Tuomisto H, Gribel R, Toledo PM, Valeriano MM, Ruokolainen K, Cohen MCL, Cordeiro CLO, Rennó CD, Coelho LS, Ferreira CAC Tags: An Acad Bras Cienc Source Type: research
Dominant yeasts associated to mango (Mangifera indica) and rose apple (Syzygium malaccense) fruit pulps investigated by culture-based methods.
o-Cadavid E Abstract The biotechnological potential of yeasts associated to different habitats in Colombia has been poorly studied, especially the yeasts associated with different plant structures. Fruit pulps are interesting substrates mainly for the growth of yeast species, that can positively affect the productivity and quality of some bioeconomic species. Therefore, the objective of this study was to identify the dominant yeast species associated with mango and rose apple fruit pulps in Cali, Colombia. A total of 90 isolates were obtained, which were grouped considering their colony morphology. The D1/D2 domai...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Ramírez-Castrillón M, Usman LM, Silva-Bedoya LM, Osorio-Cadavid E Tags: An Acad Bras Cienc Source Type: research
Physiological responses of soybean (Glycine max (L.) Merrill) cultivars to copper excess.
Abstract Successive applications of copper fungicides on vines have resulted in increased copper content in vineyard soils over the years. This high copper content has affected the growth of young vines in eradicated vineyards. Thus, the cultivation of annual species for a few years is an alternative to copper phytostabilization, because it would be a good way to decrease copper availability to plants. The aim of this study was to evaluate the physiological responses of different soybean cultivars to copper concentration increase. Four different soybean cultivars were grown under three copper concentrations: 0.5, ...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Schwalbert R, Silva LOS, Schwalbert RA, Tarouco CP, Fernandes GS, Marques ACR, Costa CC, Hammerschmitt RK, Brunetto G, Nicoloso FT Tags: An Acad Bras Cienc Source Type: research
First record of growth rings for 11 native subtropical anuran species of South America.
This study aimed to provide initial data, allowing researchers to further work out in the age of individuals and populations, sampling evidence of the presence of growth rings in 11 native species (representing nine families) of a subtropical region of southern Brazil. Four bone samples of each specimen were used to perform the skeletochronological analysis: the penultimate phalanges of the 3rd and 4th fingers, the humerus, and the femur. The presence of growth rings was confirmed in the periosteal layer of the bones of all analyzed species. In comparison with phalanges, growth rings of humeri and femora are more irregular...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Brum AJC, Loebens L, Santos MBD, Cechin SZ Tags: An Acad Bras Cienc Source Type: research
Modeling residual biomass from mechanized wood harvesting with data measured by forest harvester.
Abstract The lack of accurate models for estimating residual biomass in wood harvesting operations results in underutilization of this co-product by forestry companies. Due to the lack of this information, forestry operations planning, such as chipping and transport logistics, are influenced, with a consequent increase in costs. Thereby, the aim of this study was to propose and evaluate statistical models to estimate residual biomass of Eucalyptus sp. in wood harvesting operations by means of tree variables measured from harvester processing head. Generalized linear models were composed through stepwise procedure ...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Rodrigues CK, Lopes ES, Figueiredo Filho A, Pelissari AL, Silva MKC Tags: An Acad Bras Cienc Source Type: research
Vitamin B6 reduces oxidative stress in lungs and liver in experimental sepsis.
Abstract Sepsis is a life-threatening organ dysfunction induced by a disrupted host response to infecting pathogens. Inflammation and oxidative stress are intrinsically related to sepsis progression and organ failure. Vitamin B6 is an important cellular cofactor for metabolic processes and has anti-inflammatory and antioxidant properties. We aimed at evaluating the effect of vit B6 on inflammation and oxidative stress markers in the liver and lung of rats subjected to a relevant animal model of polymicrobial sepsis. Adult male Wistar rats were submitted to cecal ligation and perforation model and immediately af...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Giustina AD, Danielski LG, Novochadlo MM, Goldim MPS, Joaquim L, Metzker KLL, Carli RJ, Denicol T, Cidreira T, Vieira T, Petronilho F Tags: An Acad Bras Cienc Source Type: research
Low frequency of antibodies anti-Neospora caninum in rodents in Fernando de Noronha Island, Brazil.
This study aimed to evaluate the frequency of Neospora caninum antibodies in rodents from the Island of Fernando de Noronha, Brazil, and to contribute to epidemiological data on neosporosis in this region. Blood samples were collected from 154 black-rats (Rattus rattus) and 12 rock-cavies (Kerodon rupestris). The search for anti-N. caninum antibodies was made using the NAT technique, with a cut-off of 1:20. The frequency of positive mice was 5.19% (8/154 - 1:20 titer) and all rock-cavies were negative. The low frequency of antibodies against N. caninum in rodents found in the Island shows the low contamination of the envir...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Lima DCV, Melo RPB, Andrade MR, DE Alcântara AM, Magalhães FJR, Carvalho JCS, Silva RAD, Costa MMD, Mota RA Tags: An Acad Bras Cienc Source Type: research
First record of Dichelyne (Dichelyne) bonacii (Nematoda, Cucullanidae) parasitizing the intestine of two species of lutjanid fish (Perciformes, Lutjanidae) on the northeast Brazilian coast.
Abstract Lutjanids are marine fish and commonly inhabit coral reefs, which have migratory habits and feed in a general way, due to these characteristics, are susceptible to infections by parasites, such as cuculanid nematodes. This work aimed to report for the first time, the occurrence of Dichelyne (Dichelyne) bonacii in Brazil, in two new hosts, Lutjanus analis and Rhomboplites aurorubens, acquired from local artisanal fishermen at the Aracaju city public fishing terminal (10 ° 54'17 "S37 ° 2'56" W), northeast coast of Brazil. Adult nematodes were collected from the intestinal tract of the host...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Alves AM, Calassans TAS, Freire JF, Souza GTRE, Takemoto RM, Melo CM, Jeraldo VLS, Madi RR Tags: An Acad Bras Cienc Source Type: research
Rhinoxenus (Dactylogyridae) parasitizing piranhas (Serrasalmidae) at its southernmost limit of distribution (Paran á River, Argentina), with the description of two new species.
Rhinoxenus (Dactylogyridae) parasitizing piranhas (Serrasalmidae) at its southernmost limit of distribution (Paraná River, Argentina), with the description of two new species. An Acad Bras Cienc. 2019;91(4):e20190711 Authors: Rossin MA, Francesco PN, Irigoitia MM, Scarabotti PA, Taglioretti V, Timi JT Abstract Three piranha species, Serrasalmus maculatus, S. marginatus and Pygocentrus nattereri, living sympatrically in the lower Paraná River (Argentina) were examined searching for nasal monogeneans to know its diversity and distribution. Four species of monogeneans belonging to Rhinoxenu...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Rossin MA, Francesco PN, Irigoitia MM, Scarabotti PA, Taglioretti V, Timi JT Tags: An Acad Bras Cienc Source Type: research
Diosmin induces caspase-dependent apoptosis in human glioblastoma cells.
;o LF Abstract Diosmin is a flavone glycoside clinically used as the main component of Daflon for the treatment of venous diseases. Several studies demonstrated that this natural compound can induce apoptosis in different tumors. However, isolated diosmin has not been studied regarding its effects on glioblastoma so far. Since glioblastoma is a highly lethal and fast-growing brain tumor, new therapeutic strategies are urgently needed. Herein, we evaluated the role of this flavonoid against glioblastoma cells using in vitro assays. Diosmin significantly reduced the viability of GBM95, GBM02, and U87MG glioblastoma ...
Source: An Acad Bras Cienc - December 7, 2019 Category: Science Authors: Soares JM, Faria BM, Ascari LM, Souza JM, Soares AG, Cordeiro Y, Romão LF Tags: An Acad Bras Cienc Source Type: research
EDITORIAL NOTE: Collection of Paleontology Papers in honor of the Centenary of the Brazilian Academy of Sciences.
PMID: 31800677 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - December 2, 2019 Category: Science Authors: Kellner AWA, Soares MB Tags: An Acad Bras Cienc Source Type: research
Morphological and morphometric variations of Dicrocoelium rileyi (Digenea: Dicrocoelidae) parasitizing Tadarida brasiliensis (Chiroptera: Molosiidae) in Mexico.
ruz I Abstract Fifty-five adult Dicrocoelium rileyi Macy, 1931 parasitizing Tadarida brasiliensis (Geoffroy, 1824) from Durango, Nuevo Leon, Puebla, Zacatecas and Mexico State were morphologically described and morphometrically analyzed. To evaluate the degree of variation among populations from the five localities, 27 morphometric measures of this species were transformed into an orthogonal factor by principal component analysis (PCA), and a posterior comparison among populations was performed using discriminant analysis of principal components (DAPC). Significant differences were observed with exceptions between...
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Falcón-Ordaz J, Octavio-Aguilar P, Estrella-Cruz I Tags: An Acad Bras Cienc Source Type: research
Agroforestry systems and understory harvest management: the impact on growth and productivity of dual-purpose wheat.
The objective of the study was to evaluate the growth and production efficiency of forage-grain dual-purpose wheat in two arrangements and four agroforestry systems (Intercrop-I and Intercrop-II), as well as to evaluate crop management for the wheat crops in two planting seasons (Crop Season I-2014 and Crop Season II-2015. The experiment was conducted in a randomized complete block design, factorial scheme 7x2x2, with seven cultivation systems Eucalyptus urophylla x Eucalyptus grandis Intercrop-II and Intercrop-I; Peltophorum dubium Intercrop-II and Intercrop-I; P. rigida Intercrop-I; S. parahyba Intercrop-I; a wheat monoc...
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Caron BO, Pinheiro MVM, Korcelski C, Schwerz F, Elli EF, Sgarbossa J, Tibolla LB Tags: An Acad Bras Cienc Source Type: research
Energy balance and CO2 emission in mechanized biomass harvesting in pine stands under thinning.
Abstract Biomass is an important component of the Brazilian energy matrix, with a potential contribution of co-products from thinned forests. The aim of this work was to evaluate the energy balance and CO2 potential emission in mechanized biomass harvesting operations in Pinus taeda stands at 9 and 10 years-old and under thinning, searching to support the use of co-product biomass from thinning as a renewable energy source. Thinning was carried out through cut-to-length harvesting method, in which large logs for sawmill and small logs for energy were produced. In addition, tops, needles, barks, and branches were c...
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Rodrigues CK, Lopes ES, Silva DA, Figueiredo Filho A, Pelissari AL Tags: An Acad Bras Cienc Source Type: research
Sugarcane inoculated with endophytic diazotrophic bacteria: effects on yield, biological nitrogen fixation and industrial characteristics.
This study showed that no strain promoted the improvement on yield and biological nitrogen fixation during the three cycles of sugarcane (plant-cane, ratoon cane and second ratoon cane). However, industrial characteristics of sugar cane can be affectd by PGPB inoculation. PMID: 31778453 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Antunes JEL, Freitas ADS, Oliveira LMS, Lyra MDCCP, Fonseca MAC, Santos CERS, Oliveira JP, Araújo ASF, Figueiredo MVB Tags: An Acad Bras Cienc Source Type: research
Water retention capacity in Arenosols and Ferralsols in a semiarid area in the state of Bahia, Brazil.
The objective of this study was to evaluate the influence of particle size distribution and porosity on the water retention capacity of sandy soils in the semiarid area of the Northeast region. Soil bulk and particle densities, total porosity (macro, meso and microporosity), field capacity, permanent wilting point and soil-water retention curve were determined in samples of surface (A) and subsurface (C or Bw) horizons of ten sandy soil profiles. Particle size was determined subdividing the sand fraction into five classes. Higher amounts of the medium and fine sand fractions of the studied soils oriented their physical and...
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Parahyba RDBV, Araújo MDSB, Almeida BG, Rolim Neto FC, Sampaio EVSB, Caldas AM Tags: An Acad Bras Cienc Source Type: research
Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash.
In this study, the accelerated weathering essay was performed in waterborne polyurethane (WPU)/ silica (from rice husk ash) composites in order to evaluate the thermal and physical changes in these materials. These composites were prepared by two distinct methods: in situ polymerization and blending method. The highest resistance to thermal degradation and to accelerated weathering was reached with WPU/silica composites obtained by blending method due the interactions between SiO2 particles and the polymer matrices. Blending method for preparation WPU/silica composites proved to be a simpler and faster method, with no draw...
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Monteiro WF, Miranda GM, Soares RR, Santos CABD, Hoffmann MS, Carone CLP, Lima V, Souza MF, Campani AD, Einloft SMO, Lima JE, Ligabue RA Tags: An Acad Bras Cienc Source Type: research
Metallic Phthalocyanines: impact of the film deposition method on its supramolecular arrangement and sensor performance.
sio P Abstract This short review gives a concise overview of the impact of deposition methods on the supramolecular arrangement of metallic phthalocyanine films and their applications. Primarily, an introduction about the possible phthalocyanine molecular structures and derivatives obtained from modification on the phthalocyanine rings was presented. The possibility of perfecting/improving the supramolecular arrangement of metallic phthalocyanine (MPcs) films by using different deposition techniques such as Langmuir-Blodgett (LB), Langmuir-Schaefer (LS), Layer-by-Layer (LbL), physical vapor deposition (PVD) and...
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Maximino MD, Martin CS, Pereira MS, Aléssio P Tags: An Acad Bras Cienc Source Type: research
Proteins and Peptides at the Interfaces of Nanostructures.
Abstract The present review focuses on the proteins and peptides at the interfaces of nanostructured metals and semiconductors as a result of their use in synthesis in-situ and functionalization of nanostructures. We start the review with an introduction about the peculiar properties of nanostructured materials and their applications. In the following, the chemical and structural properties of peptides and proteins that allow their use as reducing, stabilizing, and functionalization agents are discussed. Proteins and peptides have not only the chemical groups for the metal ion reducing but also provide template...
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Brito AMM, Belleti E, Menezes LR, Lanfredi AJC, Nantes-Cardos IL Tags: An Acad Bras Cienc Source Type: research
Multicomponent training with different frequencies on body composition and physical fitness in obese children.
CONCLUSION: Short-term multicomponent training seems to be effective on PF improvements, independently of the exercise frequency, in overweight and obese young children. However, it seems to be more effective to perform a multicomponent exercise training three times/week to improve muscular strength, body mass index, and decrease body fat percentage. This knowledge should be considered by professionals in physical education or youth sport in order to adapt practical tasks depending on the training purposes. PMID: 31778458 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Alves ASR, Venâncio TL, Honório SAA, Martins JMC Tags: An Acad Bras Cienc Source Type: research
Impact of immunological state on eco-physiological variables in one of the southernmost lizards in the world.
This study represents a starting point in eco-immunology of a wild lizard population of Liolaemus in cold and temperate environments of Patagonia where the southward shift in the geographic ranges of pathogen populations due to global warming represents a threat to resident host populations. PMID: 31778459 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Duran F, Boretto JM, Fernández JB, Molina MI, Medina MS, Ibargüengoytía NR Tags: An Acad Bras Cienc Source Type: research
Metabolic responses to dietary carbohydrate/lipids ratios in neotropical hybrid catfish ( ♂Pseudoplatystoma corruscans×♀Pseudoplatystoma fasciatum).
In conclusion, the limit of dietary starch inclusion and lipids were 15% and 9.00%, respectively (CHO/L: 1.66), and this level did not affect the energy metabolism of the juvenile hybrid catfish. PMID: 31778460 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Okamura D, Fortes-Silva R, Paulino RR, Araújo FG, Costa DVD, Pereira RT, Rosa PV Tags: An Acad Bras Cienc Source Type: research
Native and ornamental exotic resources in pollen loads and garbage pellets of four stingless bees (Apidae, Meliponini) in an urban environment with riparian native forest.
Abstract An entomopalynological study to assess pollen use by wild bees was performed in an urban environment with riparian native forest in the Chaco region of Argentina. A combined method for sampling pollen loads and garbage pellets at nest entrances in four stingless bees with different entrance size and forager traffic was here successfully used. Sampling was carried out in a short period of time (late winter) and located within a distance of 50 m. Pollen analysis using acetolysis showed that most identified pollen types (31) were from native species, 12 from ornamental exotic species, 5 included native and o...
Source: An Acad Bras Cienc - November 30, 2019 Category: Science Authors: Vossler FG Tags: An Acad Bras Cienc Source Type: research
Probiotic, antibiotic and combinations in Nile tilapia juveniles culture.
This study aimed to evaluate the effect of the commercial probiotic (Saccharomyces cerevisiae), antibiotic (florfenicol), and its combination for Nile tilapia culture. The experiment was arranged in a completely randomized design with five replications, and five treatments diets: Control: water and diet without additives; YD: yeast in the diet (1 g Kg-1); AW: antibiotic in the water (0.002 g L-1); AWYD: antibiotic in the water, and yeast in the diet (0.002 g L-1 and 1 g Kg-1); and AD: antibiotic in the diet (0.01 g kg-1). The growth parameters as total and standard length, weight, weight gain, biomass, Fulton's condition f...
Source: An Acad Bras Cienc - November 16, 2019 Category: Science Authors: Ferreira AL, Amorim MPS, Souza ER, Schorer M, Castro GHF, Pedreira MM Tags: An Acad Bras Cienc Source Type: research
Diametric Growth of Tree Species in the Atlantic Forest, Paran á, Brazil.
This study aimed to describe diametric growth of Balfourodendron riedelianum, Cordia trichotoma and Ocotea diospyrifolia based on its growth rings and to verify the relationship between this growth with the environmental characteristics in different altitude levels and forest types. Diametric growth was higher for the largest tree diameters of the three species. Based on the fitted growth model, the age in which mean annual increment in diameter becomes greater than the current annual increment was 55 years for B. riedelianum (DBH = 18.27 cm), 45 years for C. trichotoma (DBH = 26.56 cm) and 44 years for O. diospyrifolia (D...
Source: An Acad Bras Cienc - November 16, 2019 Category: Science Authors: Souza RF, Machado SA, Longhi-Santos T Tags: An Acad Bras Cienc Source Type: research
Is arbuscular mycorrhizal fungal species community affected by cotton growth management systems in the Brazilian Cerrado?
Abstract Conventional cotton production in western Bahia, Brazil, involves intensive use of agricultural inputs and mechanization, which may affect arbuscular mycorrhizal fungi (AMF). This work aimed at studying the impact of conventional and organic cotton production in the AMF of western Bahia. Soil samples were obtained from conventional white cotton and colored cotton organic production systems as well as from native Cerrado areas, close to the white cotton fields, and from the subcaducifolia vegetation, close to the organic colored cotton farms. The most frequent species in the conventional farming areas belo...
Source: An Acad Bras Cienc - November 16, 2019 Category: Science Authors: Nunes HB, Goto BT, Coimbra JL, Oliveira JS, Tavares DG, Rocha MS, Silva FL, Soares ACF Tags: An Acad Bras Cienc Source Type: research
Pudicinae (Nematoda) coparasitic in Proechimys roberti (Rodentia: Echimyidae) from the Brazilian Amazonia: description of a new species of Pudica, redescription of Pudica evandroi (Travassos) and updated key to the species of the genus.
Abstract The re-examination of nematodes collected decades ago from a spiny rat, Proechimys roberti (Echimyidae) from Pará State, revealed the presence of Acanthostrongylus acanthostrongylus Travassos, 1937, and two coparasitic species of Pudica (Heligmonellidae: Pudicinae), one of them new to science. Pudica minima n. sp. mostly resembles Pudica tenua Durette-Desset, 1970, described from Proechimys semispinosus in Colombia. Nevertheless, it differs from P. tenua by having a synlophe with 12 ridges with poorly developed careen, bursal pattern of type 2-2-1 on the right lobe, bursal rays 2 and 3 similar in l...
Source: An Acad Bras Cienc - November 16, 2019 Category: Science Authors: Serrano PC, Durette-Desset MC, Digiani MC Tags: An Acad Bras Cienc Source Type: research
A new species of Stethelmis Hinton (Coleoptera: Elmidae) from Argentina and description of its larva.
hangelsky M Abstract A new species of Stethelmis, S. shepardi sp. nov., is described for Patagonia, Argentina from adults of both sexes. A full description and illustrations of both the adult and the larva of the new species are provided with comments on its habitat and distribution. Adults of the new species are compared with those of S. kaszabi (Hinton 1970) and S. chilensis (Hinton 1945). The larva of S. shepardi is compared with that of S. kaszabi, the other Stethelmis larva described. We also describe and illustrate for the first time the male genitalia of S. kaszabi. A key to the known species of Stethelmis ...
Source: An Acad Bras Cienc - November 16, 2019 Category: Science Authors: Martínez-Román NR, Manzo V, Archangelsky M Tags: An Acad Bras Cienc Source Type: research
Zingiber officinale formulation reduces hepatic injury and weight gain in rats fed an unhealthy diet.
This study investigated the ability of formulation containing Zingiber officinale (ginger) to reverse health changes promoted by unhealthy diet in Wistar rats. Five compounds from the gingerol family and three from the shogaol family were identified in the chromatographic analyzes of the extract. The animals were fed a combination of unhealthy foods, the cafeteria diet, which promoted increases in body weight, hepatocyte nucleus area, total hepatocyte area and liver fat accumulation, as well as reduced hepatic glutathione S-transferase concentration, compared to the control group, which received commercial chow. The treatm...
Source: An Acad Bras Cienc - November 16, 2019 Category: Science Authors: Leal DT, Fontes GG, Villa JKD, Freitas RB, Campos MG, Carvalho CA, Pizziolo VR, Diaz MAN Tags: An Acad Bras Cienc Source Type: research
Soil microbial C:N:P ratio across physiognomies of Brazilian Cerrado Soil microbial biomass across a gradient of preserved native Cerrado.
Abstract Different physiognomies across the Cerrado could influence the microbial C:N:P ratio in the soil since these physiognomies present different abundance and diversity of plant species. Thus, the aim of this study was to evaluate the microbial C:N:P ratio in soil across three different physiognomies of Cerrado in the Northeast, Brazil, namely campo graminóide (dominance of grasses), cerrado stricto sensu (dominance of grasses, shrubs, low trees, and woody stratum), and cerradão (dominance of woody stratum). Campo graminóide was characterized by lower values of total organic C, N, microbi...
Source: An Acad Bras Cienc - November 16, 2019 Category: Science Authors: Rocha SMB, Antunes JEL, Araujo FF, Mendes LW, Sousa RS, Araujo ASF Tags: An Acad Bras Cienc Source Type: research
Resistance of the wild tomato Solanum habrochaites to Phytophthora infestans is governed by a major gene and polygenes.
Abstract This work aimed to study the inheritance of resistance to Phytophthora infestans in tomato plants, using the maximum likelihood estimation function. The susceptible cultivar Santa Clara (Solanum lycopersicum) was used as the female genitor and the P. infestans resistant S. habrochaites f. glabratum accession (BGH 6902) as the male genitor. F1 plants from the crossing were self-pollinated to produce F2 progenies, and also backcrossed with PR and PS to produce BC1:R and BC1:S generations, respectively. The tomato plants were inoculated 50 days after transplanting. Disease severity was evaluated via a diagra...
Source: An Acad Bras Cienc - November 16, 2019 Category: Science Authors: Copati MGF, Alves FM, Dariva FD, Pessoa HP, Dias FO, Carneiro PCS, Carneiro DJH, Nick C Tags: An Acad Bras Cienc Source Type: research
LETTER TO THE EDITOR: Dealing with predatory publishing is a shared responsibility: the role of Latin American journals.
PMID: 31721916 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - November 11, 2019 Category: Science Authors: Memon AR Tags: An Acad Bras Cienc Source Type: research
Stenodema longicuneata (Carvalho and Rosas, 1966) (Hemiptera, Heteroptera, Miridae) in Patagonia: redescription, new synonym and geographic distribution.
n MDC Abstract The genus Stenodema Laporte, 1832 is a group of grass-feeding plant bugs worldwide distributed, with five species recorded for the Subantarctic sub-region (sunsu Morrone 2015). Males of Stenodema longicuneata (Carvalho and Rosas, 1966) are redescribed and photographed. Stenodema laolaoensis (Carvalho, 1985) is proposed as a junior synonym of S. longicuneata. New geographic records are provided and distributional and biogeographic issues are discussed. PMID: 31664308 [PubMed - in process] (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - November 1, 2019 Category: Science Authors: Pereyra PM, Diez F, Coscarón MDC Tags: An Acad Bras Cienc Source Type: research
The larva of Neoneura confundens Wasscher and van't Bosch, 2013 (Odonata, Coenagrionidae) and key to the larvae of genus.
We describe and illustrate the final instar larva of Neoneura confundens for the first time. Adults associated to this larva correspond to the blue form of the species and are also discussed and illustrated. The larva of N. confundens is similar to other Neoneura larvae, showing 1 premental seta and a well-marked nodus in caudal lamellae, but it can be differentiated by having fringed posterior margin in all tibiae and in middle and hind tarsi, among other characters. A key to known larvae of Neoneura and new records extending the species range in the southern cone are provided. PMID: 31664309 [PubMed - in process] (S...
Source: An Acad Bras Cienc - November 1, 2019 Category: Science Authors: Rodríguez JS, Molineri C Tags: An Acad Bras Cienc Source Type: research
Genotoxic and Genoprotective Potential of Black Mulberry (Morus nigra) Fruit.
l;ktaş B Abstract Black Mulberry (Morus nigra L.) belongs to Moraceae family. The present study evaluated the possible genotoxic and/or protective activities of black mulberry fruit juice (BMFJ), in vitro, using mitomycin C (MMC) as a positive control, by chromosomal aberrations and micronucleus assays. Human lymphocytes were treated with BMFJ concentrations alone (1/1, 1/2, 1/4, 1/8 dilutions), pretreatment (49h) (0.20 μg/ml MMC+ 1/1 BMFJ, 0.20 μg/ml MMC+1/2 diluted BMFJ, 0.20 μg/ml MMC+1/4 diluted BMFJ, 0.20 μg/ml MMC+1/8 diluted BMFJ) and simultaneous-treatment (48h) (0.20 μg/ml MMC+ 1/1 BMFJ, 0...
Source: An Acad Bras Cienc - November 1, 2019 Category: Science Authors: Yilmaz S, Uçar A, Göktaş B Tags: An Acad Bras Cienc Source Type: research
Semi-automated counting model for arbuscular mycorrhizal fungi spores using the Circle Hough Transform and an artificial neural network.
This article introduces a semi-automated counting model of AMF spores in slide images based on Artificial Neural Network (ANN). The semi-automated counting of AMF spores facilitates and accelerates the tasks of researchers, who still do the AMF spore counting manually. We built a representative database of spore images, processing images through the Circle Hough Transform (CHT) method and training an ANN to classify patterns automatically. The classification analysis and the performances of the proposed method against the manual method are presented in this paper. The accuracy for the identification of spores by CHT in con...
Source: An Acad Bras Cienc - October 25, 2019 Category: Science Authors: Melo CAO, Lopes JG, Andrade AO, Trindade RMP, Magalhães RS Tags: An Acad Bras Cienc Source Type: research
Dietary iron chelate for sows and effects on iron supplementation in piglets.
Abstract In order to evaluate iron chelate in diets for sows during gestation and lactation and its effects on iron supplementation for piglets, a total of 50 pregnant sows in the third parity order were distributed according to a randomized block design with two treatments: diet without iron chelate supplementation (n=20); diet supplemented with 0.15% of iron chelate (n=30). The litters of sows were distributed into five different treatments: sows without iron chelate supplementation and piglets receiving intramuscular iron-dextran; sows without iron chelate supplementation and piglets receiving oral iron supplem...
Source: An Acad Bras Cienc - October 25, 2019 Category: Science Authors: Barros CA, Pascoal LAF, Watanabe PH, Martins TDD, Andrade TS, Ribeiro JES Tags: An Acad Bras Cienc Source Type: research
Spatial distribution of wood volume in Brazilian savannas.
lo CR Abstract Here we model and describe the wood volume of Cerrado Sensu Stricto, a highly heterogeneous vegetation type in the Savanna biome, in the state of Minas Gerais, Brazil, integrating forest inventory data with spatial-environmental variables, multivariate regression, and regression kriging. Our study contributes to a better understanding of the factors that affect the spatial distribution of the wood volume of this vegetation type as well as allowing better representation of the spatial heterogeneity of this biome. Wood volume estimates were obtained through regression models using different environmen...
Source: An Acad Bras Cienc - October 25, 2019 Category: Science Authors: Silveira EMO, Reis AAD, Terra MCNS, Withey KD, Mello JM, Acerbi-Júnior FW, Ferraz Filho AC, Mello CR Tags: An Acad Bras Cienc Source Type: research