Raw Soil
Mostrando 1-12 de 64 artigos, teses e dissertações.
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1. Biodegradable oil-based polymeric coatings on urea fertilizer: N release kinetic transformations of urea in soil
ABSTRACT: Polymer coatings are used to control the rate of release of plant available nutrients from fertilizers as well as to reduce nutrient losses such as ammonia (NH3) volatilization. Although the literature presents several examples of materials used to coat urea, little is known about nitrogen (N) release properties such as the mechanism involved and p
Sci. agric. (Piracicaba, Braz.). Publicado em: 01/07/2019
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2. Produtividade de Pinus caribaea VAR. hondurensis e suas relações com atributos químicos dos solos em região de Cerrado brasileiro
Resumo A silvicultura com espécies exóticas desempenha importante papel socioeconômico no Brasil, fornecendo matéria-prima para a produção de madeira, lenha, carvão vegetal, celulose, dentre outros. Nesse sentido, torna-se necessário o aprofundamento do conhecimento sobre as variáveis ambientais que controlam a produtividade do Pinus; em especial, a
Ciênc. Florest.. Publicado em: 30/05/2019
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3. Photosynthetic capacity and water use efficiency in Ricinus communis (L.) under drought stress in semi-humid and semi-arid areas
ABSTRACT Castor bean is one of the crops with potential to provide raw material for production of oils for biodiesel. This species possess adaptive mechanisms for maintaining the water status when subjected to drought stress. A better understanding these mechanisms under field conditions can unravel the survival strategies used by this species. This study ai
An. Acad. Bras. Ciênc.. Publicado em: 07/12/2017
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4. Sugars levels of four sugarcane genotypes in different stem portions during the maturation phase
ABSTRACT Maturation is a characteristic of sugarcane plant (Saccharum spp.) and even when grown under the same soil and climate conditions the varieties differ on the maturation curve. Thus, studies that allow establishing maturation curves of different sugarcane genotypes in the local soil and climate may indicate the proper harvesting period to ensure bett
An. Acad. Bras. Ciênc.. Publicado em: 21/04/2017
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5. Software for micromorphometric characterization of soil pores obtained from 2-D image analysis
ABSTRACT Studies of soil porosity through image analysis are important to an understanding of how the soil functions. However, the lack of a simplified methodology for the quantification of the shape, number, and size of soil pores has limited the use of information extracted from images. The present work proposes a software program for the quantification an
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-08
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6. SUSTENTABILIDADE NO USO DO FÓSFORO: UMA QUESTÃO DE SEGURANÇA HÍDRICA E ALIMENTAR
The phosphorus used as fertilizer in agriculture is extracted from phosphate rocks, which after extraction reacts with sulfuric acid, releasing phosphoric acid, a raw material for the fertilizer industry. Studies point to a possible depletion of world reserves of phosphate rock in the next 50-100 years. A phosphorus scarcity is closely linked to global food
Quím. Nova. Publicado em: 2016-07
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7. Cardanol-based thermoset plastic reinforced by sponge gourd fibers (Luffa cylindrica)
Abstract A growing global trend for maximum use of natural resources through new processes and products has enhanced studies and exploration of renewable natural materials. In this study, cardanol, a component of the cashew nut shell liquid (CNSL), was used as a building block for the development of a thermosetting matrix, which was reinforced by raw and mod
Polímeros. Publicado em: 04/03/2016
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8. Opisthorchiasis in infant remains from the medieval Zeleniy Yar burial ground of XII-XIII centuries AD
We present a paleoparasitological analysis of the medieval Zeleniy Yar burial ground of the XII-XII centuries AD located in the northern part of Western Siberia. Parasite eggs, identified as eggs of Opisthorchis felineus, were found in the samples from the pelvic area of a one year old infant buried at the site. Presence of these eggs in the soil samples fro
Mem. Inst. Oswaldo Cruz. Publicado em: 24/11/2015
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9. IDENTIFICAÇÃO DE COMPOSTOS ORGÂNICOS EM LIXIVIADO DE ATERRO SANITÁRIO MUNICIPAL POR CROMATOGRAFIA GASOSA ACOPLADA A ESPECTROMETRIA DE MASSAS
The organic compounds present in leachate can contaminate soil, superficial and underground water, and the majority is considered harmful to the environment and human health. The objective of this study was to identify organic compounds present in landfill leachate located in Maringá-PR by gas chromatography coupled to mass spectrometry (GC-MS). The raw
Quím. Nova. Publicado em: 2015-07
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10. Toxoplasma gondii infection: seroprevalence and associated risk factors among primary schoolchildren in Lagos City, Southern Nigeria
INTRODUCTION: Toxoplasma gondii infection has been described as the most widespread zoonotic infection of humans and other animals. Information concerning T. gondii infection among schoolchildren is unavailable in Lagos City, Nigeria. METHODS: This cross-sectional study investigated the seroprevalence and risk factors associated with T. gondii infection amo
Rev. Soc. Bras. Med. Trop.. Publicado em: 2015-02
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11. Incorporation of ceramic waste into binary and ternary soil-cement formulations for the production of solid bricks
The incorporation of ceramic waste (CW) into solid bricks made with soil-cement mixtures has been studied in recent years. The aim of this study was to evaluate the physical and mechanical properties of solid bricks made with soil-cement mixtures uniaxially pressed with the addition of construction waste, having hydrated lime and CPII F-32 Portland cement as
Mat. Res.. Publicado em: 18/02/2014
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12. Gestational toxoplasmosis in Paraná State, Brazil: prevalence of IgG antibodies and associated risk factors
The aim of the present study was to verify the association between seropositivity for IgG anti-Toxoplasma gondii antibodies and social, economic and environmental variables of pregnant women attending the public health centers of Paraná, Brazil. From January 2007 to July 2010, 2226 pregnant women were interviewed and detection of anti-T. gondii specific IgG
Braz J Infect Dis. Publicado em: 2013-08