bluuebunny/crossref_metadata_2025 huggingface dataset:
Acute phase proteins in serum and cerebrospinal fluid in healthy cattle: possible use for assessment of neurological diseases
Authors: Filippo Paula A. Di , Lannes Saulo T. , Meireles Marcos A.D. , Nogueira Andressa F.S. , Ribeiro Luiza M.F. , Graça Flavio A.S. , Glória Leonardo S.
Published: July 2018

ABSTRACT: Use of acute-phase proteins (APPs) for assessment of health and disease in animals has increased greatly within the last decade. The objective was to determine the normal concentration of APPs in the serum and cerebrospinal fluid (CSF) of healthy cattle by polyacrylamide gel electrophoresis. Fifty crossbred animals (350±70kg of BW and 18±1.2 months of age), 25 heifers and 25 steers were used. CSF samples were collected from atlanto-occipital (AO) site and blood samples were obtained from the jugular vein. CSF and serum protein electrophoresis were performed by means of sodium dodecyl sulphate-polyacrylamide gel electrophoresis. Thirty-seven proteins with molecular weights ranging from 7 and 37kDa were identified in CSF of all animals. These eight were nominally identified with immunoglobulin A and G, celuloplasmin, transferrin, albumin, α1-antitripsin, acidic glycoprotein, and haptoglobin. All protein fractions in CSF did not differ between heifers and steers. In sera, 34 proteins with molecular weights between 7 and 244kDa were identified in heifers and steers. Similar proteins were nominally identified in the sera, but only the CSF presented α1-antitripsin. The serum values of acidic glycoprotein and immunoglobulin G were significantly higher in steers compared with heifers. In conclusion, measurement of CSF acute phase protein concentrations can be useful in diagnosing and monitoring the progression of bovine neurological diseases, perhaps even to guide therapeutic procedures. The CSF electrophoretic profile of healthy cattle does not change depending on gender.
Parâmetros de qualidade do leite bovino em propriedades de agricultura familiar
Authors: Jamas Leandro T. , Salina Anelise , Rossi Rodolfo , Menozzi Benedito D. , Langoni Hélio
Published: July 2018

RESUMO: Propriedades da agricultura familiar tem contribuído para aumentar a produção leiteira, e podem ser considerados importantes para cadeia produtiva do leite. A higiene no processo produtivo deve ser o foco principal para garantir maior produção e qualidade do leite. Monitorou-se a qualidade do leite de vacas, em propriedades da agricultura familiar, no município de Bofete/SP, antes e após a adoção de medidas de controle. Avaliaram-se 21 propriedades, selecionadas por conveniência. Após período inicial de 13 coletas para monitoramento de CCS e CBT, os proprietários dos dois grupos (G1 e G2) receberam orientações técnicas sobre mastite e qualidade do leite, em atividade de dia de campo. Os proprietários do G1 além dessas atividades receberam intervenção no manejo utilizado, com visita técnica, e orientações individuais quanto à maneira adequada de ordenha e obtenção higiênica do leite. Posteriormente foram realizadas novas coletas quinzenais (n=12) como anteriormente, de amostras de leite de conjunto, de cada propriedade dos dois grupos, bem como do tanque comunitário. Foram consideradas variáveis climáticas como precipitação, temperatura e umidade relativa do ar. Observou-se uma variação dos resultados de cada coleta tanto para CCS/mL de leite quanto para CBT/mL de leite, nos dois períodos. Quanto a CCS no G1 houve uma diminuição significativa (P < 0,02), enquanto que para CBT houve um ligeiro aumento, bem menor, quando comparado ao valor mediano que foi de 381x103 UFC/mL de leite no G2. Os resultados medianos de CCS/mL de leite e de CBT/mL de leite do tanque comunitário foram mais elevados nas duas fases (períodos), entretanto muito superior para CBT. A análise das variáveis climáticas evidenciou aumento das medianas nos três parâmetros avaliados. A correlação entre essas variáveis e qualidade do leite, não mostrou diferenças para o Log10 da CCS e CBT. Pode-se concluir pela higiene precária no manejo de ordenha.
ASSESSING THE METHODOLOGICAL DIFFERENCES BETWEEN BRAZILIAN JOURNALS AND TOP JOURNALS IN STRATEGY
Authors: LEONEL RONEI DA S. , PICHETH SARA F. , SILVA FERNANDA R. DA , CRUBELLATE JOÃO M.
Published: July 2018

ABSTRACT Purpose: Our study compares methodological procedures of Brazilian papers with those of papers published in AMJ, OS, ASQ, JMS and SMJ in field of strategy from 2006 to 2015. Originality/value: Our study 1. identifies and describes methodological differences, offering a benchmark to improve future studies; 2. starts a discussion about the reasons those differences exist and their implications towards advancing the field of strategy; and 3. suggests forms of overcoming the current constraints and improving the quality of our research. Design/methodology/approach: Based on a systematic review, we analyzed ten Brazilian journals with the highest impact factor and five top journals. The search yielded a final sample of 1294 empirical papers. The data was analyzed through content analysis, for which our coding schema contained three dimensions: research design, measurement, and analytic approach. Findings: We found some methodological differences that may characterize Brazilian papers as testers and top journals as expanders, reinforcing results found by other studies, concerning the necessity of developing the Brazilian strategy field to be more competitive with the international field at large. Therefore, we concluded that it is desirable to improve our research methods as a field and possibly to overcome methodological differences, helping not only to develop theories but also to consider the Brazilian reality.
ANATOMICAL, ULTRASTRUCTURAL, PHYSICAL AND MECHANICAL WOOD PROPERTIES OF TWO-YEAR-OLD Eucalyptus grandis × Eucalyptus urophylla CLONES
Authors: Zanuncio Antonio José Vinha , Carvalho Amélia Guimarães , Carneiro Angélica de Cassia Oliveira , Tomazello Filho Mario , Valenzuela Paulina , Gacitúa William , Colodette Jorge Luiz
Published: July 2018

ABSTRACT Eucalyptus wood from adult trees is used for several purposes; however, the wood of younger trees has limited use. This study aims to characterize and propose uses of two-year-old eucalyptus wood. Six two-year-old Eucalyptus grandis × Eucalyptus urophylla clones have been selected and their anatomical, ultrastructural, physical and mechanical wood characteristics evaluated. The wood of Clone A shows more robust fibers with better microfibril arrangement, resulting in better mechanical properties, and therefore, a better performance for structural use. Clone F showed a low variation of wood basic density in the radial direction, facilitating its machinability, and with the Clone B, showed a lower anisotropy, and therefore, the wood is recommended for locations with high variations of humidity. The heterogeneity of the wood characteristics of the evaluated clones confirms the need for further studies, to choose those most adequate to each use.
DEFORESTATION IN MIXED OMBROPHILOUS FOREST IN THE SERRANA REGION OF SANTA CATARINA
Authors: Schneider Luiz Cláudio Araujo , Silva Morgana Tramontini da , Agostinetto Lenita , Siegloch Ana Emilia
Published: July 2018

ABSTRACT Since the enactment of Law No. 11,428/06, an expectation was created as to whether more restricted rules on the use and conservation of the Atlantic Forest Biome would be sufficient to reduce deforestation. In the same sense, the inspection bodies stood out due to their responsibility in the application of this important legal instrument. In this context, the objectives of this study were: 1) to analyze the history of deforestation in the Planalto Serrano of the State of Santa Catarina, whose forest covered area is characterized by the Mixed Ombrophilous Forest, after the validity of Law 11,428/06; 2) to verify the application of the Law in the occurrence of deforestation, and 3) to identify the reasons for deforestation. A documentary research was carried out on 543 criminal procedures instituted by the Environmental Military Police for deforestation between December 2006 and December 2015. From each criminal case the following data were extracted: date, number of occurrences per year and municipality, size, successional stage of the deforested area, motive and land use of deforested areas. The results indicated that there was an accentuated reduction of 58% in the number of deforestation between 2007 and 2015. However, the selective cutting of Araucaria angustifolia (Bertol.) Kuntze was predominant with a percentage of 62.07% of the total number of occurrences. It was also verified that 71.46% of deforestation reached the middle stage of forest regeneration. In most case (33%), the reason for deforestation was for commercial purposes. The law for the protection of the Atlantic Forest Biome, conjunctly with the inspection, contributed to reduce deforestation and the cut of araucarias. Nevertheless, advancements are still needed, especially in the recovery of deforested areas, since only 28% of deforested areas were effectively restored.
RADIAL GROWTH DYNAMICS OF Khaya ivorensis TREES FROM EXPERIMENTAL PLANTATION
Authors: Soranso Denise Ransolin , Vidaurre Graziela Baptista , Chagas Matheus Peres , Oliveira José Tarcísio da Silva , Silva João Gabriel Missia da , Latorraca João Vicente de Figueiredo
Published: July 2018

ABSTRACT The objective of this study was to characterize the formation of growth rings in Khaya ivorensis wood, as well as to analyze the variation in the morphology of the vessel elements, aiming to understand the growth of this species in experimental plantations. Disks from the bases of five trees were collected, and after polishing the cross-section, demarcation of the growth rings limits was carried out. The anatomical study of the wood was conducted with the purpose of characterizing the rings, and their width was measured by means of scanned images of the disks. A historical series of data was obtained concerning the diameter of the trees to establish a correlation with the width of the rings measured over the years. The growth rings limits of African mahogany wood are demarcated by a thin layer of marginal parenchyma, and the presence of false rings has been observed. Significant annual growth correlation of 0.62 was observed among the trees, being the radial increment of irregular wood in the first years (wide and narrow rings), and highlighting the 3rd and 11th year of growth in which the largest increases were observed due to a biological adaptation tendency to the environment and the occurrence of thinning carried out in the planting area, respectively.
Assessment of female sexual function in remote postpatum period: a cross-sectional study
Authors: Pereira Thalita Rodrigues Christovam , Dottori Elissa Hanayama , Mendonça Flávia Maciel de Aguiar Fernandes , Beleza Ana Carolina Sartorato
Published: July 2018

Abstract Objectives: (i) to evaluate female sexual function in remote postpartum period within Brazilian women and (ii) to compare female sexual dysfunction in relation to the mode of delivery. Methods: in this cross-sectional study, two groups of remote postpartum women, who underwent vaginal delivery (n=30) and cesarean (n=48), were studied. The sexual function of participants was assessed through an online Brazilian version of FSFI between 45 and 180 days after delivery. Data were analyzed by descriptive and inferential statistics using Fisher exact test, and Student t test. Results: based on the data of 78 women who completed the online questionnaire, 78% (n=61) showed sexual dysfunction on remote postpartum period being that the FSFI mean score for vaginal postpartum was 22.17 and for cesarean postpartum, 21.12 (p=0.443). Conclusions: the majority of remote postpartum women showed sexual dysfunction. There was no significant difference found on female sexual function between modes of delivery.
Maternal smoking during pregnancy and early development of overweight and growth deficit in children: an analysis of survival
Authors: Fonseca Poliana Cristina de Almeida , Carvalho Carolina Abreu de , Carvalho Vitória Abreu de , Ribeiro Andréia Queiroz , Priore Silvia Eloiza , Franceschini Sylvia do Carmo Castro , Vieira Sarah Aparecida
Published: July 2018

Abstract Objectives: to evaluate the association between smoking during pregnancy and nutritional status. Methods: cohort study with a sample of 460 children in the baseline. The children were assessed four times, being measured for weight and length to be converted in indexes length forage (L/A) and body mass index forage (BMI/A) in Z-score. The time until occurrence of growth deficit and overweight was calculated in days and compared to maternal smoking during pregnancy. To assess the association between smoking during pregnancy and the outcomes, a Hazard Ratio by Cox regression was obtained, adjusting by confounding variables selected from Directed Acyclic Graphs (DAG). Results: the time until occurrence of growth deficit and overweight was lower in children whose mothers smoked during pregnancy. Smoking during pregnancy was a risk factor for length deficit (HR = 2.84; CI95% = 1.42 to 5.70) and for overweight (HR = 1.96; CI95% = 1, 09 to 3.53), even after the adjustment. Conclusions: maternal smoking was a changeable factor associated with anthropometric outcomes, which demonstrates the need for actions to combat smoking during pregnancy in order to prevent early nutritional deviations.
A institucionalização da arquivologia no Brasil e a reforma administrativa no primeiro governo Vargas (1935-1945)
Authors: Santos Paulo Roberto Elian dos
Published: July 2018

RESUMO Este artigo aborda, em perspectiva histórica, a atuação do Departamento Administrativo do Serviço Público (Dasp), criado em 1938, durante o Estado Novo, com a tarefa de empreender um projeto modernizador capaz de viabilizar a separação entre política e administração no contexto de forte centralização do poder na Presidência da República. Considera que o Departamento foi agente promotor de ações que configuram a gênese da fase moderna do conhecimento arquivístico, traduzido em técnicas, métodos e práticas da arquivologia e destinado a encontrar lugar na administração pública reformada. Apresenta, no contexto da reforma administrativa do governo Getúlio Vargas, essa fase de institucionalização da arquivologia que só se pode compreender se forem analisadas suas relações com as áreas emergentes da biblioteconomia e documentação contempladas no projeto modernizador do novo órgão. O artigo se propõe a apontar a institucionalidade dos arquivos e da arquivologia alcançada ao fim do período estudado. Para tanto, utiliza como principal fonte de pesquisa os documentos do fundo Dasp depositado no Arquivo Nacional, no Rio de Janeiro.
Emergence and biomass accumulation in seedlings of rice cultivars irrigated with saline water
Authors: Freire Márcio H. da C. , Sousa Geocleber G. de , Souza Maria V. P. de , Ceita Emanuel D. R. de , Fiusa Jamili N. , Leite Kelly N.
Published: July 2018

ABSTRACT The objective of this study was to evaluate the performance of three rice cultivars under saline water irrigation. The experiment was carried out in full sun at the Experimental Farm of the Unilab, in Redenção, Ceará, Brazil, in January 2016. The experimental design was completely randomized (CRD), in a 5 x 3 factorial scheme [irrigation water electrical conductivity (ECw: 0.5, 1.0, 2.0, 3.0 and 4.0 dS m-1) versus three rice cultivars (C1 - Ligeirinho, C2 - Casado and C3 - Meruinho)], totaling 15 treatments, with 4 replicates of 30 seeds per cultivar. After 21 days, the following variables were evaluated: emergence percentage (EP), emergence speed index (ESI), mean time of emergence (MTE), mean speed of emergence (MSE), shoot dry matter (SDM), root dry matter (RDM) and total dry matter (TDM). The cultivar Ligeirinho showed higher tolerance to saline stress with respect to the emergence percentage, emergence speed index and mean speed of emergence. The cultivar Casado showed higher tolerance to saline stress for shoot dry matter, root dry matter and total dry matter in comparison to the other cultivars.
Modifications of phosphorus in Latosol as a function of humic acids and acidity
Authors: Beck Márcia H. , Escosteguy Pedro A. V. , Dick Deborah P.
Published: July 2018

ABSTRACT The effect of humic acids (HA) on phosphorus (P) availability is still contradictory; thus, it is necessary to identify the conditions that play a crucial role in this effect. The aim of this study was to investigate the effect of HA application, combined with doses of P, on the content of this nutrient in a Latosol with and without acidity correction. Two experiments were carried out, one with HA from peat and another with HA from mineral charcoal (leonardite). Doses of these acids (0; 1.12 and 5.62 mg C g-1 of soil) and P (26.2 and 104.7 mg P g-1 of soil, 1 and 4-fold higher than recommended, respectively) were tested at soil pH 4.5 and 7.0, in a three-factorial design. The soil was incubated for 20 days and the soil-P content was measured by Mehlich-1 and remaining-P tests. The effect of HAs on P availability varied with the P doses and soil acidity. Humic acids application increases P content in Latosol when P dose is higher than recommended and there is no acidity correction (pH 4.5). However, there is no effect of HAs application on soil-P content when applying the recommended amount of this nutrient, irrespective of the pH value.
Structural static and modal frequency simulations in a coffee harvester’s chassis
Authors: Silva Evandro P. da , Silva Fábio M. da , Andrade Ednilton T. de , Magalhães Ricardo R.
Published: July 2018

ABSTRACT Coffee harvesters are subject to stresses and vibrations in their structure, originating from engines and harvesting system. These structures must be designed to avoid rupturing of the components due to fragility of the materials, inadequate geometries, or the phenomenon of resonance, which increases the displacements/deformations of the components. In this scenario, the main objective of this study is to analyse the results of stresses and displacements from two static simulations and to present results of natural vibration frequencies from two modal simulations in a self-propelled coffee harvester. For this purpose, 20 modal shapes were generated, considering coffee harvester reservoir as empty and full. The simulations were carried out using the finite element method in which actual boundary conditions were applied to the motor chassis of the harvester. As results, stresses above the material’s yield strength were observed in some regions of the components. Greater displacements were observed at the rear of the chassis, suggesting a new positioning of the rear wheel to obtain a uniform load distribution. Some natural frequencies, which presented greater displacements/deformations, can be affected by the operation of the main motor, also associated with the vibrating system in the coffee harvest, which may cause rupture of components.
Heterogeneous salinity in the root system of bell pepper in greenhouse
Authors: Oliveira Francisco de A. de , Alves Rita de C. , Bezerra Francisco M. S. , Lima Luan A. , Medeiros Ana S. de , Silva Nicolly K. C.
Published: July 2018

ABSTRACT The split-root technique was used as a strategy to reduce saline stress on pepper. A completely randomized design with six treatments and four replicates was used. The treatments consisted of six saline water application strategies (T1 - salinized nutrient solution (S1 = 1.4 dS m-1) during the whole cycle; T2 - salinized nutrient solution (S2 = 4.5 dS m-1) throughout the cycle, T3 - S1 and S2 throughout the cycle, using two emitters and without splitting the root system, T4 - S1 and S2, using two emitters and splitting the root system by a plastic film, T5 - S1 and S2, using two emitters and splitting the root system, alternating the solutions every 15 days, T6 - S1 and S2, using two emitters and without splitting the root system, alternating the solutions every 15 days). Five fruit harvests were performed, and the plants were harvested at 85 days after initiation of treatments and evaluated for the following variables: leaf number, leaf area, plant height, stem diameter, shoot dry matter (stem + leaves + fruits), root dry matter, number of fruits, fresh fruit weight and fruit production per plant. Most of the variables were reduced by the salinity of irrigation water. The highest fruit yields were obtained using low-salinity water, with the mixture of non-saline and saline waters, and alternating biweekly when the root system was split, demonstrating the viability of these three techniques.
Chemical control of stalk regrowth in glyphosate-resistant transgenic cotton
Authors: Ferreira Alexandre C. de B. , Bogiani Julio C. , Sofiatti Valdinei , Silva Filho João L. da
Published: July 2018

ABSTRACT Cotton stalk regrowth must be controlled after harvest to ensure the phytosanitary quality and sustainability of cotton farming systems. Mechanical destruction generally does not conform to the no-tillage system, and the control of cotton stalk regrowth by herbicides is little studied in Brazil. The objective of this study was to evaluate the efficiency of herbicides to control glyphosate-resistant transgenic cotton stalk regrowth. The study was conducted in three environments of the Brazilian Cerrado region, two in Santa Helena de Goiás (SHGO), during 2013 and 2014, and one in Luís Eduardo Magalhães (LEM-BA) in 2014. In each of the three environments, the experiment was carried out in a randomized complete block with four replications. Each experiment consisted of different combinations of herbicides and one untreated control. Cotton stalk regrowth was influenced by the three environments. Two sequential 2,4-D amine applications, each with 1,000 g ha-1 of acid equivalent, resulted in better cotton stalk destruction, albeit with 4.9, 16.9 and 36.9% of cotton stalk regrowth in SHGO 2013 and 2014, and LEM-BA 2014, respectively. A single application of 2,4-D amine and a 2,4-D amine spraying followed by the application of carfentrazone-ethyl, paraquat, saflufenacil, paraquat + diuron or glufosinate-ammonium are not effective to control glyphosate-resistant transgenic cotton stalk regrowth. The best destruction of cotton stalk regrowth occurs with two sequential applications of 2,4-D amine.
Growth, production and water consumption of coriander in hydroponic system using brackish waters
Authors: Silva Mairton G. da , Oliveira Itamar de S. , Soares Tales M. , Gheyi Hans R. , Santana Geocassia de O. , Pinho Jozelmo de S.
Published: July 2018

ABSTRACT An experiment was carried out in an adapted DFT (deep film technique) hydroponic system in PVC pipes to evaluate the growth, production and water consumption of coriander cv. ‘Verdão’, during June-July 2014. The experiment was carried out in a randomized block design with five replicates, in a 2 x 4 factorial scheme, totaling 40 plots. Two intervals of nutrient solution recirculation (0.25 and 2 h) and four levels of water electrical conductivity (ECw 0.26, 2.47, 4.91 and 7.0 dS m-1) were evaluated. At 25 days after transplanting (DAT), the reductions in plant height and in the shoot fresh and dry matter of the bunch were 2.95, 6.08 and 3.32% per unit increase of ECw (in dS m-1). Despite the reductions in growth and production, saline stress did not cause any damage to the visual aspect of coriander. The accumulated water consumption for the periods of 1-20 and 1-24 DAT significantly decreased by 5.26 and 5.85% per unit increase of ECw. It was concluded that it is viable to use a nutrient solution recirculation interval of 2 h, without production losses, and this represents a reduction of approximately 64% in electricity consumption.
Evidence of nitrogen and potassium losses in soil columns cultivated with maize under salt stress
Authors: Lacerda Claudivan F. de , Ferreira Jorge F. da S. , Suarez Donald L. , Freitas Emanuel D. , Liu Xuan , Ribeiro Aureliano de A.
Published: July 2018

ABSTRACT The aim of this study was to evaluate the accumulation of salts in the soil from irrigation water and of N and K from fertilization. The experiment was conducted in PVC columns (20 cm in diameter and 100 cm in height), filled with non-saline soil, and cultivated with maize. A completely randomized block design in a 4 x 4 factorial was used, with four levels of salinity (0.5, 2.5, 5.0 and 7.5 dS m-1), four N rates, and five replicates. Nitrogen was applied as urea and potassium nitrate at the following rates: N1: N recommendation for maize (2.6 g column-1); N2: 0.3 times (0.78 g column-1) the recommended N1 dose; N3 and N4 with N based on N1 and N2 doses, respectively, reduced proportionally based on the evapotranspiration reduction caused by salinity. After 74 days from sowing, root and soil samples were collected at different soil depths. The electrical conductivity of the saturated extract (ECe) and the concentration of ions (Ca2+, Na+, and Cl-) increased as a function of salinity and soil depth. The opposite was observed for the root system. The increase in salinity also resulted in K+ and NO3- accumulation in the soil column, mainly in treatments with higher N rates (N1 and N3). At the end of the experiment, 88% of the NO3- applied at the highest salinity treatment (7.5 dS m-1) and the highest N rate (N1) was below 20 cm soil depth, evidencing a N loss process caused by leaching.
Physical-mechanical properties of multinutrient blocks with different binders for goats and sheep intake
Authors: Furtado Dermeval A. , Castro Thiago B. de S. , Lopes Neto Jose P. , Constantino Rodrigo A. , Cunha Maria das G. G. , Nascimento José W. B. do
Published: July 2018

ABSTRACT Feed supplementation with multinutrient blocks (MB) for sheep and goats can be a viable alternative in the Brazilian semiarid region, and it is necessary to set an ideal hardness to obtain maximum feed efficiency. Therefore, this study aimed to evaluate the manufacture of MB using five binders: Portland cement, lime, kaolin, Portland cement + kaolin and lime + bentonite, at two percentages (7.5 and 10%) and two healing times (72 and 96 h). The experimental design was completely randomized in a 5 x 2 x 2 factorial scheme (binders, percentages and healing times, respectively), with five repetitions. Using lime in the MBs led to greater resistance in the specimens (208.53 kPa), as well as the greater percentage of binders (10%), ensuring higher hardness in the blocks. No change was observed in block hardness with the healing time, and a cure of 72 h is recommended. There was greater water absorption with the use of Portland cement and the use of kaolin and of lime + bentonite led to the lowest values of water absorption. The use of lime at 10% as binder and the 72 h healing time were shown to be the best combination in the manufacture of multinutrient blocks.
Physiological quality of seeds of crambe desiccated at pre-harvest with glyphosate
Authors: Cangussú Lucas V. de S. , David Andréia M. S. de S. , Araújo Eduardo F. , Alves Rayane A. , Nunes Rebeca A. , Amaro Hugo T. R.
Published: July 2018

ABSTRACT Early harvest may decrease seed exposure in the field after physiological maturation. The objective of this study was to evaluate the effect of glyphosate desiccant at different plant desiccation times at pre-harvest on the physiological quality of crambe (Crambe abyssinica Hochst) seeds. The experimental design was completely randomized in a 2 x 4 factorial scheme, involving the application of glyphosate desiccant in the plants at pre-harvest and the control (without plant desiccation) and four desiccation times, with three replicates per treatment. The desiccation of crambe plants at pre-harvest with glyphosate was efficient, positively affecting seed germination and vigor. Application of the desiccant in the plants, with 90% of brown seeds, at 103 days after sowing, allows the production of seeds with superior performance.
Efeito da contaminação por saliva na resistência adesiva de braquetes cerâmicos utilizando uma resina ortodôntica hidrofílica
Authors: LON Luís Filipe Siu , SCHNEIDER Patrícia Pigato , RAVELI Dirceu Barnabé , NASCIMENTO Denise Constance , GUARIZA-FILHO Odilon
Published: July 2018

Resumo Introdução Alguns fatores, como a presença de saliva, são capazes de influenciar a adesão do braquete ao dente durante o procedimento de colagem e podem causar falha da resistência adesiva. Objetivo O objetivo deste estudo foi avaliar a resistência ao cisalhamento de braquetes cerâmicos ortodônticos colados com Transbond XT e Transbond Plus Color Change em esmalte de dentes bovinos, contaminado e não contaminado por saliva, além de analisar o local da falha adesiva. Material e método Sessenta incisivos bovinos foram divididos aleatoriamente em quatro grupos (n=15), de acordo com o material de colagem e a presença de contaminação: Grupo 1 (G1): colagem com Transbond XT na ausência de contaminação; Grupo 2 (G2): colagem com Self Etching Pimer e Transbond Color Change na ausência de contaminação; Grupo 3 (G3): colagem com Transbond XT na presença de contaminação, e Grupo 4 (G4): colagem com Self Etching Primer e Transbond Color Change na presença de contaminação. Resultado O teste não paramétrico de Kruskal-Wallis mostrou que G1 diferiu estatisticamente (p<0,05) de G2 e G3. Não houve diferença estatística significativa entre os demais grupos. O índice de adesivo remanescente (IAR) variou entre 2 e 3 no G1 e entre 0 e 1 nos outros grupos. Conclusão A contaminação por saliva diminui a resistência adesiva ao cisalhamento de braquetes cerâmicos colados com a resina hidrofóbica Transbond XT convencional. Por outro lado, a utilização da resina hidrofílica Transbond Plus Color Change associada ao Self Etching Primer, em ambiente contaminado por saliva, confere resistência adesiva adequada para o seu uso clínico.
Influence of crown and hybrid abutment ceramic materials on the stress distribution of implant-supported prosthesis
Authors: TRIBST João Paulo Mendes , PIVA Amanda Maria de Oliveira DAL , BORGES Alexandre Luiz Souto , BOTTINO Marco Antonio
Published: July 2018

Abstract Introduction A new dental implant-abutment design is available with the possibility of improving aesthetic with no compromise of mechanical strength, using perforated CAD/CAM ceramic blocks. Objective This study evaluated the influence of crown and hybrid abutment ceramic materials combination on the stress distribution of external hexagon implant supported prosthesis. Method Zirconia, lithium disilicate and hybrid ceramic were evaluated, totaling 9 combinations of crown and mesostructure materials. For finite element analysis, a monolithic crown cemented over a hybrid abutment (mesostructure + titanium base) was modeled and screwed onto an external hexagon implant. Models were then exported in STEP format to analysis software, and the materials were considered isotropic, linear, elastic and homogeneous. An oblique load (30°, 300N) was applied to the central fossa bottom and the system’s fixation occurred on the bone’s base. Result For crown structure, flexible materials concentrate less stress than rigid ones. In analyzing the hybrid abutment, it presented higher stress values when it was made with zirconia combined with a hybrid ceramic crown. The stress distribution was similar regarding all combinations for the fixation screw and implant. Conclusion For external hexagon implant, the higher elastic modulus of the ceramic crowns associated with lower elastic modulus of the hybrid abutment shows a better stress distribution on the set, suggesting a promising mechanical behavior.
Avaliação do efeito cromático em resinas compostas nanoparticuladas submetidas a solução café
Authors: GADONSKI Ana Paula , FEIBER Monica , ALMEIDA Leonardo de , NAUFEL Fabiana Scarparo , SCHMITT Vera Lucia
Published: July 2018

Resumo Introdução Em uma sociedade de alta competitividade social, os padrões estéticos estão cada vez mais refinados e, dentro destes, a concepção e o desejo de se ter o sorriso perfeito aumentaram consideravelmente a busca pelos tratamentos dentários e, consequentemente, o desenvolvimento de materiais que possam propiciar tais resultados. O sucesso clínico de uma restauração engloba sua longevidade, do ponto de vista funcional, incluindo ausência de infiltrações, e sua função estética, por meio da manutenção de coloração e lisura superficial adequada. Objetivo O presente trabalho busca analisar a alteração de cor de duas marcas de compósitos odontológicos nanoparticulados ‒ Z350 e Bulk Fill (3M ESPE) ‒ e dois sistemas de polimento ‒ Disco SofLex e Disco SofLex espiral emborrachado (3M ESPE) ‒, com as subdivisões em grupos controle (água destilada) e experimental (café), em um período de 21 dias. Material e método Os espécimes foram confeccionados de modo padronizado e armazenados por sete dias em água deionizada a 37 °C, em estufa para análise da cor inicial, seguido do armazenamento nas respectivas soluções para a análise cromática, ao final do período de estudo, sendo ambas as análises realizadas através de espectrofotômetro (CM-700d, Konica Minolta, Osaka, Japão) e escala ΔE CIELAB. Resultado Observou-se que ambas as resinas tiveram sua coloração alterada na presença do café, entretanto a resina Z350 apresentou maiores variações em comparação à Bulk Fill. Conclusão Apesar de a solução corante café ser capaz de promover mudança de cor nas resinas estudadas, os sistemas de polimento, isoladamente, não apresentam efeito final sobre a alteração cromática desses materiais restauradores.
Learning styles preferences and e-learning experience of undergraduate dental students
Authors: DALMOLIN Ana Cláudia , MACKEIVICZ Giselle Ariana Otto , POCHAPSKI Márcia Thaís , PILATTI Gibson Luiz , SANTOS Fábio André
Published: July 2018

Abstract Introduction Education in the health sciences has been undergoing profound changes due to the incorporation of information and communication technologies. Students learn through a variety of approaches, according to their learning styles. Blended learning, which combines technology-aided learning (e-learning) with traditional face-to-face teaching methods, has been found to improve learning outcomes. Objective The aims of the present study were to evaluate the learning styles of undergraduate dental students and their experience towards the use of e-learning. Material and method Two electronic questionnaires were sent to 174 students. The learning styles were determined by the Felder & Soloman Index (ILS), which evaluates the following four dimensions of learning: processing information (active-reflexive); perceiving information (sensorial-intuitive); receiving information (visual-verbal); and understanding information (sequential-global). To determine the e-learning experience we used four questions (Likert scale – five-point) which addressed the experience and the use of information and communication technologies. Result Most students presented a well-balanced style for the active-reflective (60%) and sequential-global (68%) domains. The sensing style (64%) was predominant. A lower percentage presented a global characteristic (9%). We did not find significant differences regarding the age groups (19-21 and 22-33 years) and genders (P>0.05, χ 2). However, in terms of age the difference was significant concerning websites helping in learning (P=0.0363, Mann-Whitney). Conclusion We conclude that the students do not have the same learning styles and e-learning experience. Methods such as blended learning could provide advantages when teaching undergraduate dental students.
Why do Latin American firms hold so much more cash than they used to?
Authors: Artica Rodrigo Pérez , Brufman Leandro , Saguí Nicolás
Published: July 2018

Abstract This study assesses whether the trade-off or the pecking order theories explain the increased cash ratios in Latin American firms. It also assesses the explanatory power of additional variables that identify key macroeconomic features in Latin American economies. Due to its noticeable increase, cash became a key feature of Latin American firm performance over the last decades. The need for a better understanding is stressed by the fact that, during most of the last decade, these firms experienced a phase of accelerated economic growth and buoyant financial markets. The resulting surge in real investment opportunities within this period makes the growing cash holdings all the more puzzling. As far as we know, no other research addresses this issue in a direct way. There are robust facts about the increased cash holdings in Latin American firms. This article assesses traditional explanations and defines which fits more properly to the study sample. A complementary explanation regarding exchange rate exposure and key macroeconomic variables is constructed and empirically evaluated. To address potential sources of endogeneity, dynamic panel data methods are used. Particularly, the system generalized method of moments (GMM) was applied, as proposed by Blundell and Bond (1998). This article reports an increasing trend for corporate cash holdings in a sample of selected Latin American firms between 2000 and 2014. Likewise, net leverage and short-term debt show a declining trend over the same period. The trade-off theory may explain this. A substantial effect of macroeconomic variables particularly affecting firms that operate in the region is observed, such as exchange rate risks.
Efeito agudo do salbutamol no sistema cardiovascular durante o exercício físico em pacientes com asma moderada ou grave: estudo aleatorizado, duplo-cego e cruzado
Authors: Melo Jaqueline Ribas de , Feitoza Maiane da Silva , Cucato Gabriel Grizzo , Medeiros Wladimir Musetti , Stelmach Rafael , Cukier Alberto , Carvalho Celso Ricardo Fernandes de , Mendes Felipe Augusto Rodrigues
Published: July 2018

RESUMO Salbutamol é um β2-agonista de curta duração frequentemente utilizado em pacientes com asma para prevenir os sintomas durante ou após exercício físico. Alterações hemodinâmicas em repouso estão bem descritas. Contudo são escassos os dados sobre os efeitos na frequência cardíaca (FC) e pressão arterial (PA) durante o exercício e na fase de recuperação em pacientes com asma moderada ou grave. Foi realizado um estudo aleatorizado, duplo-cego e cruzado, em que foram inclusos 15 indivíduos com asma moderada e grave, com média de idade de 46,4±9,3 anos. Os pacientes realizaram um teste de esforço máximo em dois dias não consecutivos, com administração de 400mcg de salbutamol ou 4 “puffs” de placebo. Durante todo o protocolo foi monitorada a FC, a PA, a percepção de esforço e o pico de fluxo expiratório (PFE). Após o uso do salbutamol, o valor do PFE aumentou em média de 28,0±47,7L/m, permanecendo maior nos tempos de 5, 10 e 15 minutos de recuperação passiva em relação ao placebo (p<0,05). As variáveis FC, PA e percepção de esforço foram semelhantes entre as intervenções em todas as fases do protocolo (p>0,05). Esses resultados sugerem que o uso de salbutamol é seguro, e que a FC não necessita de ser ajustada para prescrever a intensidade do exercício após a administração de salbutamol em indivíduos com asma moderada ou grave.
Repetibilidade e reprodutibilidade de um manual de exercícios físicos domiciliares
Authors: Matias Guilherme Henrique de Lima , Guerra Ana Clara Carvalho Gonçalves , Souza Filho Breno Augusto Bormann de , Lima Jurema Telles de Oliveira , Carmo Cleber Nascimento do , Mattos Inês Echenique
Published: July 2018

RESUMO Verificou-se a reprodutibilidade e repetibilidade de um manual de exercícios físicos domiciliares em diferentes níveis de escolaridade em idosas com câncer de mama. Estudo seccional realizado entre agosto e novembro de 2016 no Instituto de Medicina Integral Professor Fernando Figueira (Imip), região metropolitana de Recife, Pernambuco. Vinte e duas idosas (idade 66.2±3.5 anos) diagnosticadas com câncer de mama em uso de hormonioterapia receberam um manual instrucional composto por 12 exercícios, a serem realizados de forma autônoma e independente em domicílio para melhoria das aptidões físicas. O manual foi entregue na primeira consulta e após seis semanas verificou-se sua reprodutibilidade por meio da avaliação de concordância em “certo” ou “errado” dos movimentos por um profissional de educação física e um fisioterapeuta. Os resultados foram analisados pelo coeficiente kappa de Cohen (k). Verificou-se uma relação interavaliadores de concordância “quase perfeita” (superior a 0,88) entre todos os 12 exercícios. Considerando a execução “certa” dos movimentos, verificou-se que seis exercícios apresentaram concordância interavaliadores com variação entre 68,2% e 90,9%; por outro lado, quando considerada a execução “errada”, observou-se variação entre 54,4% e 68,2%. Além disso, dois exercícios resultaram em 50% para “certo” e “errado”. Quanto ao nível de escolaridade, apenas o exercício 6 apresentou significância estatística (p-valor=0,03). O manual de exercícios físicos domiciliares parece ser reprodutível em idosas com câncer de mama em todos os níveis de escolaridade, para melhorar a aptidão física e promover o autocuidado funcional.
Comparação da severidade do déficit neurológico de pacientes com acidente vascular cerebral isquêmico agudo submetidos ou não à terapia trombolítica
Authors: Hanauer Laíde , Schmidt Débora , Miranda Raquel Estauber de , Borges Marcelo Krás
Published: July 2018

Resumo O acidente vascular cerebral é responsável por elevadas taxas de mortalidade e dependência funcional em adultos. A terapia precoce com trombolítico intravenoso tem sido associada a um melhor prognóstico funcional. O objetivo deste estudo foi comparar a severidade do déficit neurológico de pacientes que receberam ou não terapia trombolítica após AVC. Foram avaliados 56 pacientes, 18 que receberam trombolítico (Grupo GT) e 38 que não receberam a terapia trombolítica (GNT). Os indivíduos foram avaliados na internação e na alta hospitalar (AH) quanto a severidade do déficit pela National Institutes of Health Stroke Scale (NIHSS). A média de idade da amostra estudada foi de 65,9±11,4 anos. Os pacientes do GT apresentaram melhora significativa no escore da NIHSS entre a internação e a AH (p=0,004), além de no momento da AH apresentarem déficit neurológico menos severo quando comparado ao GNT (p=0,028). A incidência de déficit moderado a grave foi menor no GT (p<0,005), sendo que 26,7% dos pacientes estavam sem déficit no momento da AH. Conclui-se que os pacientes que receberam trombolítico apresentaram melhor recuperação dos déficits neurológicos avaliados pela NIHSS quando comparado ao grupo que não recebeu terapia trombolítica.
Conidial fungi associated with leaf litter of red cedar (Cedrela odorata) in Belém, Pará (eastern Brazilian Amazon)
Authors: SANTOS Renato Ferreira dos , SOTÃO Helen Maria Pontes , MONTEIRO Josiane Santana , GUSMÃO Luís Fernando Pascholati , GUTIÉRREZ Antonio Hernández
Published: July 2018

ABSTRACT The aim of this study was to investigate the species of conidial fungi associated with leaf litter of Cedrela odorata (Meliaceae), an endangered red cedar species typical of Amazonian terra-firme forests. Conidial fungi were sampled around C. odorata individuals in three forest areas in the municipality of Belém (Pará State, Brazil). A total of 104 species were identified, with 53 new records for the state of Pará, 46 first records for the Brazilian Amazon, including new records for Brazil (Cordana abramovii), for South America (Acarocybiopsis cubitaensis, Xylocladium claviforme) and for the Americas (Dactylaria biguttulata). A review of species of conidial fungi reported on C. odorata is provided, indicating its distribution in Brazil. For each new record in Brazil, South America and the Americas we present a description, illustrations, geographical distribution and taxonomic comments.
Food deprivation does not affect growth performance of juvenile tambacu
Authors: PAZ Arlan de Lima , PASTRANA Yugo Moraes , BRANDÃO Lian Valente
Published: July 2018

ABSTRACT The objective of this study was to evaluate the efficiency of food deprivation on the growth performance of the commercially important hybrid fish tambacu (Piaractus mesopotamicus male × Colossoma macropomum female). For this, 171 juveniles of average length 8 cm and 11.4 g body mass were distributed in nine tanks, and allocated to three treatments: the fish were fed every day (control), fed for six days followed by one day of food deprivation (6F/1D) and fed for five days followed by two days of food deprivation (5F/2D). After 77 days, all animals achieved similar growth rates. Only animals submitted to two days of food deprivation presented hyperphagia. There was a reduction in total feed consumption of 3.8% and 10.8% for the 6F/1D and 5F/2D treatments, respectively. Our results suggest that juvenile tambacu exhibit total compensatory growth when submitted to food deprivation, and that a two-day deprivation could significantly reduce production costs for tambacu farmers.
ANTIPARASITIC PLANTS USED BY THE KANTARURÉ-BATIDA INDIGENOUS COMMUNITY (NE-BRAZIL): ETHNOBOTANY AND LOCAL KNOWLEDGE-EROSION RISKS
Authors: VASCO-DOS-SANTOS DEYVISON RHUAN , SANTOS JÉSSICA VIEIRA DOS , ANDRADE WBANEIDE MARTINS DE , SANTOS-LIMA THAYSE MACEDO DOS , LIMA LIDIANE NUNES , DIAS-LIMA ARTUR GOMES , ANDRADE MARIA JOSÉ GOMES DE , VANNIER-SANTOS MARCOS ANDRÉ , MOURA GERALDO JORGE BARBOSA DE , NUNES ERIKA DOS SANTOS
Published: July 2018

Abstract Indigenous people have an intrinsic relationship with the flora used in healing systems. However, data about plants used to treat intestinal parasitosis, which are one of the main morbidity and mortality causes among indigenous peoples, remain scarce. Thus, the aim of the current study is to survey antiparasitic plants used by the Kantaruré-Batida community and to investigate whether their ethno-medico-botanical knowledge is spread. Therefore, it adopted interviews and free lists. Thirty-one (31) indigenous individuals were interviewed and they mentioned 21 plant species. Most respondents (91%) acquired the traditional knowledge through hereditary transmission and spread it (77%) in the same way. Only 35% of the respondents adopt medicinal plants as the first cure resource, besides associating the decrease of such use to their proximity to health care services. Thus, it is worth taking actions to help preserving the local knowledge and biodiversity in order to avoid the loss of indigenous therapeutic treatments.
Matemática Escolar e Processos de Subjetivação na Campanha de Nacionalização no Rio Grande do Sul
Authors: Junges Débora de Lima Velho , Knijnik Gelsa
Published: July 2018

Resumo O artigo analisa como a escola e, em particular, a matemática escolar, operavam como parte dos processos de subjetivação de escolares descendentes de imigrantes alemães do Rio Grande do Sul (RS), no período da Campanha de Nacionalização. De modo específico, discute os rituais da matemática escolar nos quais a tática da manifestação da verdade operava, examinando as práticas matemáticas presentes nesses rituais, quais conhecimentos matemáticos eram ali transmitidos e como esses eram ensinados. As ferramentas teóricas utilizadas no estudo são vinculadas às teorizações de Michel Foucault. O material de pesquisa consiste em narrativas de sete pessoas que estudaram naquele contexto e período. O exercício analítico identificou dois rituais da matemática escolar que operavam sobre os indivíduos. Sua análise possibilitou concluir que, por se considerarem indivíduos superiores, os alunos sentiam-se impelidos a serem bons em matemática, isto é, assumia-se como verdade que eles eram, efetivamente, superiores, e utilizavam-se os rituais da matemática escolar para reforçar essa manifestação.