oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 24 )

2018 ( 54 )

2017 ( 52 )

2016 ( 59 )

Custom range...

Search Results: 1 - 10 of 25327 matches for " Mateus Costa Batista "
All listed articles are free for downloading (OA Articles)
Page 1 /25327
Display every page Item
Growth and Photosynthetic Pigments of Cotton Cultivars Irrigated with Saline Water  [PDF]
Elka Costa Santos Nascimento, Ronaldo do Nascimento, André Alisson Rodrigues da Silva, Carlos Vailan de Castro Bezerra, Mateus Costa Batista, Luana Lucas de Sá Almeida Veloso, Márcia Cristina de Araújo Pereira, Hallyson Oliveira
Agricultural Sciences (AS) , 2019, DOI: 10.4236/as.2019.101007
Abstract: The cultivation of cotton is a relevant socioeconomic activity in the Brazilian agricultural scenario. In the Brazilian Northeast, however, production is limited by low rainfall, requiring water supplementation, a problem for the cotton cultivation practiced in the semi-arid region, due to the presence of saline ions in several water sources, from where the water is used for irrigation. It is necessary to identify cultivars that better tolerate saline stress in order to provide subsidies for their cultivation under such conditions. In this sense, the objective was to evaluate the tolerance of cotton cultivars to salinity. The experiment was conducted in a greenhouse, belonging to the Natural Resource Technology Center of the Federal University of Campina Grande, Campus I, Campina Grande, Brazil, in a completely randomized design in a 2 × 5 factorial scheme, with four replications, totaling 40 experimental units (BRS 368 RF and BRS SAFIRA) submitted to five saline levels (1.5, 3.0, 4.5, 6.0 and 7.5 dS·mˉ1). Irrigation with water saline of EC from 1.5 dS·mˉ1 affects adversely the growth of cotton cultivars, causing reductions in plant height, stem diameter, leaf area and number of leaves. Saline stress reduced the levels of the photosynthetic pigments of the cotton plants studied.
Patrim nio e território urbano em cartas patrimoniais do século XX
Everaldo Batista Da Costa
Finisterra - Revista Portuguesa de Geografia , 2012,
Abstract: Heritage and urban territory; the 20th ce ntury main patrimonialletters. There is currently an extreme visibility of the world’scultural and natural heritage; a time in which ancient cities around the planet are given new roles on behalf of local economic development, the so called cultural tourism. However, it is necessary to consider the historical process that led to the current conception of cultural heritage in its universal aspect anddistinguish the dialectic between culture and commodity, which impacts on the comprehension of urban territory in all its aspects.This paper summarizes a wider research and analyses the consecration of the cultural heritage to the invaluable notion of world heritage. We search to understand the effective urban territorial approach through the 20th century main patrimonial letters: Letter of Athens(1931), Letter of Venice (1964), Convention for the Protection of the Cultural and Natural Heritage (1972) and the Amsterdam Declaration (1975).
Composi??o físico-química e potencial para ensilagem do sorgo-de-guiné gigante em seis épocas de semeadura
Mateus, Gustavo Pavan;Crusciol, Carlos Alexandre Costa;Costa, Ciniro;
Pesquisa Agropecuária Brasileira , 2005, DOI: 10.1590/S0100-204X2005000900014
Abstract: the lack of alternative crops for fall-winter cultivation is a drawback in the utilization of agricultural production systems, especialy in regions with dry winters. the purpose of this study was to evaluate the potential of giant guinea sorghum (sorghum bicolor subsp. bicolor guinea race) for forage production, ensiling and plant chemical composition, in different sowing dates. the experimental design was a randomized block, with four replications, and six sowing dates. although sowing was late, giant guinea sorghum showed anticipation in development stages due to sensibility to photoperiod; its dry matter production was low, nevertheless the species presented a better quality of forage mass. due to the considerable capacity of dry matter production and ensiling potential, this species is a good option.
Palhada do sorgo de guiné gigante no estabelecimento de plantas daninhas em área de plantio direto
Mateus, Gustavo Pavan;Crusciol, Carlos Alexandre Costa;Negrisoli, Eduardo;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000600004
Abstract: crop residues on the surface of the soil can interfere in the infestation of weed of summer crops. the objective of this work was to evaluate the effect of the amount of gigantic guinea sorghum straw on the population of weed established in a no-tillage area. the experimental design used was the randomized blocks, with four replications. the treatments consisted of zero, 6,100, 7,100, 19,500, 26,700, 28,100 and 30,200 kg ha-1of guinea sorghum straw. soybean (cv. monsoy-6101) was seeded over the treatments in a density of 25 seeds m-1 and 0.45 m between lines. thirty days after the sowing of the culture, weedevaluation was accomplished. it consisted of four samplings per plot, through metallic frames of 1 m2. significant reduction of the number of weeds was verified with the increment of the straw. the control of weeds is superior to ninety percent, from 15,000 kg ha-1 on.
Practical approach on how to improve the welfare in cattle
Paranhos da Costa,Mateus JR; Tarazona Morales,Ariel Marcel;
Revista Colombiana de Ciencias Pecuarias , 2011,
Abstract: current challenges of humanity require a new paradigm for animal production, and invest time and attention to the development of new production techniques that take into account the principles of sustainability and animal welfare science. to do this, we must be committed to promoting animal welfare and health, ensure environmental sustainability, consumer satisfaction and profitability for producers. to change our relationship with animals there is no need for changes in market conditions or large investments, it is enough to know better the needs of the animals we raise, the management system adapted to its characteristics. even in the most favorable management conditions, on farms that have technological resources and trained personnel, there is much to change, especially in the daily management of the animals. some of the risks more evident in the traditional systems of beef production are: problems during parturition, morbidity and mortality of calves, lack of shade in the pastures, improper handling of animals, risk of injury, inadequate infrastructure, poor management practices during routine processing (marking, castration, vaccination, dehorning), poor welfare during loading, transport, unloading and slaughter. to remedy this, you can adopt good management practices, which have been shown to reduce risk and improve the welfare of cattle in different stages of the production chain. the objective of this review is to show some of the risks that reduce the welfare of cattle and examples of how the adoption of best management practices impact on improving the productivity of these production systems. finally, some indicators for assessing welfare in production systems are shown.
Abordaje práctico sobre cómo mejorar el bienestar en los bovinos Practical approach on how to improve the welfare in cattle
Mateus JR Paranhos da Costa,Ariel Marcel Tarazona Morales
Revista Colombiana de Ciencias Pecuarias , 2011,
Abstract: Los retos actuales de la humanidad requieren establecer un nuevo paradigma para la producción animal, y dedicar tiempo y atención para el desarrollo de nuevas técnicas de producción que tengan en cuenta los principios de la sostenibilidad y la ciencia del bienestar animal. Para ello, debemos estar comprometidos con la promoción del bienestar y la salud animal, garantizar la sostenibilidad del medio ambiente, la satisfacción de los consumidores y la rentabilidad para los productores. Para cambiar nuestra relación con los animales no hay necesidad de cambios en las condiciones del mercado o de grandes inversiones, basta conocer mejor las necesidades de los animales que criamos, adaptando el sistema de manejo a sus características. Incluso en las condiciones de manejo más favorables, en las granjas que cuentan con recursos tecnológicos y personal capacitado, hay mucho que se puede cambiar, sobre todo en el manejo diario de los animales. Algunos de los riesgos más evidentes en los sistemas tradicionales de producción de ganado de carne son: problemas de las vacas durante el parto, mortalidad y morbilidad de los terneros, ausencia de sombra en los potreros, manejo inadecuado de los animales, riesgos de lesiones por infraestructura inadecuada, malas prácticas de manejo durante procesos de rutina (marcación, castración, vacunación, descorne), pobre bienestar durante el embarque, transporte, desembarque y sacrificio. Para remediar esto, se pueden adoptar buenas prácticas de manejo, que han demostrado reducir los riesgos y mejorar el bienestar de los bovinos en diferentes etapas de la cadena productiva. El objetivo de esta revisión es mostrar algunos de los riesgos que disminuyen el bienestar de los bovinos y ejemplos de cómo la adopción de las buenas prácticas de manejo repercuten sobre el mejoramiento de la productividad de estos sistemas productivos. Finalmente se muestran algunos indicadores para la evaluación del bienestar en los sistemas productivos. Current challenges of humanity require a new paradigm for animal production, and invest time and attention to the development of new production techniques that take into account the principles of sustainability and animal welfare science. To do this, we must be committed to promoting animal welfare and health, ensure environmental sustainability, consumer satisfaction and profitability for producers. To change our relationship with animals there is no need for changes in market conditions or large investments, it is enough to know better the needs of the animals we raise, the management system adapted to its ch
Efeito da palhada do sorgo de guiné “gigante” na nutri o foliar e produtividade da soja em plantio direto = Effect of “Gigante” Guinea sorghum straw on the leaf nutrition and production of soybean in no-tillage area
Gustavo Pavan Mateus,Carlos Alexandre Costa Crusciol,émerson Borghi
Acta Scientiarum : Agronomy , 2007,
Abstract: As conseqüências das altera es proporcionadas pela cobertura do solo, em sistema de plantio direto, no comportamento das culturas anuais, n o s o muito conhecidas. Com o objetivo de avaliar a absor o de nutrientes pela soja e seus reflexos na produtividade, em raz o de níveis de palha de sorgo na superfície, conduziu-se experimento em um Nitossolo Vermelho Estruturado, em Botucatu, Estado de S o Paulo. Os tratamentos, dispostos em blocos ao acaso, com 4 repeti es, constaram de 0; 6.100; 7.100; 19.500; 26.700; 28.100 e 30.200 kg ha-1 de palhada de sorgo de guiné “gigante”. O aumentoda palhada do sorgo de guiné “gigante” incrementou os teores foliares de N e de P até a quantidade de 25000 e 17500 kg ha-1 de palhada, respectivamente. Em sistema de plantio direto, a elevada produ o da soja, em decorrência do aumento da quantidade de palhada,relaciona-se à adequada absor o de nutrientes pela cultura em virtude, principalmente, da manuten o da umidade disponível no solo. The effects of cover plants on the performance of annual crops under no-tillage systems are not well defined yet. A field trial was carried out on a Rhodic Kandiudalf soil in Botucatu, state of S o Paulo, Brazil, aiming to evaluate the effect of the amount of Gigante guinea sorghum straw on soybean nutrient uptake and its consequent performance of grain yield in no-tillage area. The experimentaldesign was developed in randomized blocks with four replications. The treatments consisted of 6.1, 7.1, 19.5, 26.7, 28.1 e 30.2 ton ha-1 of guinea sorghum straw. The increase of straw provided increment of N and P plant levels until the amount of 25.0 and 17.5 ton ha-1, respectively. Thus, the highest soybean grain yields reported in soils under no-tillage systems might be related to the proper water and nutrient uptakes due to higher soil moisture availability.
OCORRêNCIA DE BOTULISMO EM BOVINOS CONFINADOS NO RIO GRANDE DO SUL
Franciele Maboni,Fernanda Monego,Iveraldo Dutra,Mateus Matiuzzi da Costa
Ciência Animal Brasileira , 2010,
Abstract: Botulism is the intoxication caused by a neurotoxin produced by the Clostridium botulinum, distinguished by flacid or complete skeletal musculature paralysis. This study reports a botulism outbrake in feedlot bovine, fed with corn silage. Samples of the liver, and of the intestinal and ruminal content from one of the bovine that presented typical clinical state for botulism, as well as a portion of corn silage were sent for bacterial analysis. In the laboratory, bioassay and serum neutralization were performed on rats, confirming the suspect for type C botulism. This report intends to warn veterinaries and breeders, which practice herd feedlot, because this procedure increases botulism susceptibility, and it is mainly related to the type and quality of the food ingested.
Avalia??o dos hábitos de exposi??o ao sol e de fotoprote??o dos universitários da Regi?o Metropolitana de Porto Alegre, RS
Costa, Francine Batista;Weber, Magda Blessman;
Anais Brasileiros de Dermatologia , 2004, DOI: 10.1590/S0365-05962004000200003
Abstract: background: it is known that changes in the habits of the world population with regard to solar exposure, have caused an increased rate of skin cancer in the last few decades. this information is especially relevant in the southern region of brazil, due to the higher prevalence of caucasians, who are more vulnerable to harm from the sun, compared to other darker skinned brazilians. objectives: to evaluate the habits of solar exposure and sun-protection among university students in the metropolitan region of porto alegre, from july to september 2001. methods: 1030 questionnaires were answered by university students living in the metropolitan region of porto alegre. results: on weekends, 38.4% of the students expose themselves to the sun for 2 to 6 hours daily. during the summer, 43.7% expose themselves to the sun between 10 am and 3 pm. eighty-five per cent of the students affirmed that they use sunscreen, but 65% do not use it when practicing outdoor sports. conclusions: we observed that most university students expose themselves excessively to the sun at inappropriate times of the day and without effective protection against the sun.
A proposal for the quality control of Tanacetum parthenium (feverfew) and its hydroalcoholic extract
Chaves, Juliana Siqueira;Da Costa, Fernando Batista;
Revista Brasileira de Farmacognosia , 2008, DOI: 10.1590/S0102-695X2008000300009
Abstract: in this study, we present a proposal for the physical and chemical quality control of the powder of the species t. parthenium (feverfew) and its hydroalcoholic extract obtained by percolation. the sesquiterpene lactone parthenolide, the main active compound of this plant, was quantified by hplc and its content was found to be 0.49% in the powder and 1.06% in the extract. the total content of flavonoids, determined by uv spectroscopy, was found to be 0.54% in the powder and 1.05% in the hydroalcoholic extract. santin, the main flavonoid of this species, was isolated and further identified in the extract by hplc. since parthenolide can also be found in other asteraceae species, the analysis of santin is important to certify the authenticity of the plant material. the results confirmed the authenticity of the plant material and the efficiency of the extraction procedure.
Page 1 /25327
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.