Chemical Correction
Mostrando 13-24 de 60 artigos, teses e dissertações.
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13. Caracterização e classificação quanto ao risco ambiental do estéril da mina de cromita do município de Andorinha, Bahia
The mineral waste studied was host rock from a chromite mine located in Andorinha/Bahia, extracted and stockpiled in yards without specific application. Host rock was submitted to chemical analysis, XRD, SEM-EDS, IR and TGA and classified according to ABNT standards for solid waste classification. Analyses confirmed that this host rock, classified as ultraba
Quím. Nova. Publicado em: 2012
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14. Composição química e propriedades funcionais no processamento de vinagres / Chemical composition and functional properties in the processing fo vinegar
The fruit vinegars increasingly become popular on the planet, being produced from various crops or their residues, using classical and modern techniques. These products have great variety of organic acids, vitamins, minerals, phenolic compounds and other elements with important physiological functions. Vinegar higher quality depends more on their secondary c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/09/2011
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15. Classes granulométricas e modo de aplicação de calcário na cultura do milho / Size classes and ways of applying lime to corn crop
Lime particle size is key to soil correction as it defines the reactivity of the soil due to its low solubility. The lime presenting a particle size larger than 0,3 mm corrects soil acidity and enables soil residual effect whereas the finely ground lime presents a lower residual effect, however; it promotes soil acidity correction and can percolate in the la
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2011
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16. Effect of silicate fertilization on soil and on palisade grass plants under grazing intensities
Application of calcium silicate (SiCa) as soil acidity corrective was evaluated in a Rhodic Hapludox soil with palisade grass conducted under pasture rotation system with different grazing intensities. Experimental design was complete randomized blocks with four grazing intensities - grazing intensities were imposed by forage supply (50, 100, 150 and 200 kg
Revista Brasileira de Zootecnia. Publicado em: 2011-07
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17. Bovine liver sample preparation and micro-homogeneity study for Cu and Zn determination by solid sampling electrothermal atomic absorption spectrometry.
Abstract This work describes a systematic study for the bovine liver sample preparation for Cu and Zn determination by solid sampling electrothermal atomic absorption spectrometry. The main parameters investigated were sample drying, grinding process, particle size, sample size, microsample homogeneity, and their relationship with the precision and accuracy
Spectrochimica Acta Part B v. 60. Publicado em: 2011
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18. OBTENÇÃO E CARACTERIZAÇÃO DE EMULSÃO PARA CORREÇÃO DE ESCOAMENTO DE ÓLEO PESADO. / OBTAINING AND CHARACTERIZATION OF EMULSION FOR CORRECTION OF HEAVY OIL FLOW.
Extracting and producing heavy oil presents many difficulties, promoted by the nature of the constant quantities involved, such as viscosity of the oil, the means through where it moves the salinity of water, oil composition, the temperature and so forth. In the pumping, the amount of oil which is drawn is not enough to meet the expenses, that is, the cost-e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2010
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19. Effect of different treatment methods for reducing morning bad breath. A randomized crossover clinical trial. / Avaliação clínica em estudo cruzado e randomizado de diferentes métodos para a redução da halitose matinal
The aim of this study was to compare the chemical effect of antimicrobial agents in mouthrinses and mechanical effect of tongue scrapers along with toothbrushing and dentifrice for conventional oral hygiene, measured by a handheld sulphide monitor BreathAlert™. Twenty healthy volunteers, from 18 to 50 years-old (the mean age was 35,9 years-old), of eit
Publicado em: 2010
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20. Estudo das micropropriedades de resíduos sólidos gerados nos decantadores de estações de tratamento de água
The conventional or life-cycle system for water treatment (chemical coagulation, flocculation, sedimentation, filtration, disinfection, fluoridation and pH correction) employed in most water treatment plants (WTP) in Brazil turns water unfit for human consumption (spring water and surface water) into a product that is in accordance with the drinking water gu
Publicado em: 2009
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21. Reciclagem primária de ABS: propriedades mecânicas, térmicas e reológicas / Primary recycling of ABS: mechanical, thermal and rheological properties
In this study, the primary recycling of ABS Poli(acrilonitrile butadiene styrene) inside the industry was the main subject of the analyses. Many studies have been running on recycling of end life cycle of manufactured products, however a source of rejects inside the industry can be explored and be used to reduce costs and optimize expensive raw materials. Ea
Publicado em: 2009
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22. Soil organic matter pools under management systems and natural Cerrado vegetation / Compartimentos da matéria orgânica do solo sob sistemas de manejo e vegetação natural de cerrado
Different soil organic matter pools under management systems and natural Cerrado vegetation were studied. These pools were estimated using their carbon and nitrogen contents. Total soil organic carbon and total nitrogen (COT and NT), carbon and nitrogen of particulate organic matter (COP and NP), mineral-associated organic carbon and nitrogen (COM and NM), p
Publicado em: 2009
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23. Compartimentos da matéria orgânica do solo sob sistemas de manejo e vegetação natural de cerrado / Soil organic matter pools under management systems and natural Cerrado vegetation
Different soil organic matter pools under management systems and natural Cerrado vegetation were studied. These pools were estimated using their carbon and nitrogen contents. Total soil organic carbon and total nitrogen (COT and NT), carbon and nitrogen of particulate organic matter (COP and NP), mineral-associated organic carbon and nitrogen (COM and NM), p
Publicado em: 2009
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24. Compartimentos da matéria orgânica do solo sob sistemas de manejo e vegetação natural de cerrado / Soil organic matter pools under management systems and natural Cerrado vegetation
Different soil organic matter pools under management systems and natural Cerrado vegetation were studied. These pools were estimated using their carbon and nitrogen contents. Total soil organic carbon and total nitrogen (COT and NT), carbon and nitrogen of particulate organic matter (COP and NP), mineral-associated organic carbon and nitrogen (COM and NM), p
Publicado em: 2009