Encontrados 30 documentos, a visualizar página 1 de 3

Mobility of Cr, Pb, Cd, Cu and Zn in a loamy sand soil : a comparative study

Interest in soil contamination has been growing in recent years due to the ongoing degradation of soil environments. Therefore, the development of remediation techniques and the study of contaminant sorption and migration are areas of intense research. In this study, the authors sought to evaluate the scenario of co-contamination of a loamy sand soil by multiple heavy metals. To that end, the sorption and trans...

Mobility of Cr, Pb, Cd, Cu and Zn in a loamy sand soil: a comparative study

Interest in soil contamination has been growing in recent years due to the ongoing degradation of soil environments. Therefore, the development of remediation techniques and the study of contaminant sorption and migration are areas of intense research. In this study, the authors sought to evaluate the scenario of co-contamination of a loamy sand soil by multiple heavy metals. To that end, the sorption and trans...

Desempenho de novilhos suplementados e terminados em pasto, na seca, e avaliaçã...

Avaliaram-se o ganho de peso e as características de carcaça de novilhos Nelore suplementados com elevado teor de proteína na terminação em pasto, durante a seca, e estimou-se a disponibilidade dos componentes da pastagem. O experimento foi implantado em pastagem de Brachiaria brizantha, cv. Marandu, em seis piquetes de nove hectares. Foram utilizados 48 novilhos Nelore com 30 meses de idade e 415±16 kg. Cada l...

Estimação por aproximação química dos teores de proteína indegradável insolúvel...

A mathematical model was developed to predict the content of undegradable neutral detergent insoluble protein (UNDIP) from chemical characteristics of tropical forages. This study was based on a biological limitation of a previous model, which restricts the UNDIP estimates to values equals or higher than 1.34% of dry matter. The databank was formed by 540 samples of tropical forages used in cattle feeding (fres...

Bioleaching of hexavalent chromium from soils using acidithiobacillus thiooxidans

The continuous and growing degradation of the environment, due to several anthropogenic activities, is a main concern of the scientific community. Consequently, the development of low cost techniques to clean air, water and soils are under intense investigation. In this study, the focused problem is the soil contamination by hexavalent chromium, which is known for its several industrial applications - producti...

Bioleaching of hexavalent chromium from soils using Acidithiobacillus thiooxidans

The continuous and growing degradation of the environment, due to several anthropogenic activities, is a main concern of the scientific community. Consequently, the development of low cost techniques to clean air, water and soils are under intense investigation. In this study, the focused problem is the soil contamination by hexavalent chromium, which is known for its several industrial applications - productio...

Bioleaching of hexavalent chromium from soils using acidithiobacillus thiooxidans

The continuous and growing degradation of the environment, due to several anthropogenic activities, is a main concern of the scientific community. Consequently, the development of low cost techniques to clean air, water and soils are under intense investigation. In this study, the focused problem is the soil contamination by hexavalent chromium, which is known for its several industrial applications - productio...

Bioleaching of hexavalent chromium from soils using Acidithiobacillus thiooxidans

Allergy to Extensively Hydrolysed Formulas

Parâmetros digestivos e produção de proteína microbiana em novilhas em crescime...

Avaliaram-se o manejo para crescimento compensatório e o efeito da suplementação com ionóforo na dieta sobre os parâmetros digestivos e sobre a produção de proteína microbiana de novilhas leiteiras. Foram utilizadas 20 animais puros da raça Pardo-Suíça, com média de peso inicial de 200kg aos cinco meses de idade. Os tratamentos foram arranjados em um esquema fatorial 2x2x2, e os animais foram alocados, aleatori...