Fractions History
Mostrando 1-12 de 35 artigos, teses e dissertações.
-
1. Copper and zinc fractions in the profile of an Inceptisol cultivated with apple in southern Brazil
ABSTRACT The present study aimed to evaluate the accumulation and distribution of Cu and Zn fractions in the profile of an Inceptisol by application of fungicides with a previous history of apple cultivation in southern Brazil. Stratified soil samples (0.0 – 0.025 m, 0.025 –0.050 m, 0.05 – 0.10 m, 0.10 – 0.15 m, 0.15 – 0.20 m and 0.20 – 0.40 m de
Bragantia. Publicado em: 16/04/2018
-
2. Phosphorus fractions in apple orchards in southern Brazil
ABSTRACT Phosphorus (P) applications at dosages higher than the necessary may cause P buildup in the soil labile fractions and, consequently, pollution of water sources. This study aimed to assess accumulation of P fractions as well as the parameters of adsorption isotherms in soil profiles having a history of application of phosphate fertilizers and cultiva
Bragantia. Publicado em: 29/05/2017
-
3. Phosphorus fractions in soil with a long history of organic waste and mineral fertilizer addition
ABSTRACT Applications for long periods of organic animal waste as a source of nutrients to crops can contaminate the soil and the surface and subsurface waters. This study aimed to evaluate how the utilization of organic waste, after successive applications, affects P fractions in the soil and consequently environmental contamination. In an experiment conduc
Bragantia. Publicado em: 30/01/2017
-
4. Numerical Predictions for the Thermal History, Microstructure and Hardness Distributions at the HAZ during Welding of Low Alloy Steels
A phenomenological model to predict the multiphase diffusional decomposition of the austenite in low-alloy hypoeutectoid steels was adapted for welding conditions. The kinetics of phase transformations coupled with the heat transfer phenomena was numerically implemented using the Finite Volume Method (FVM) in a computational code. The model was applied to si
Mat. Res.. Publicado em: 05/04/2016
-
5. Impact properties of aluminium - glass fiber reinforced plastics sandwich panels
Aluminium - glass fiber reinforced plastics (GFRP) sandwich panels are hybrid laminates consisting of GFRP bonded with thin aluminum sheets on either side. Such sandwich materials are increasingly used in airplane and automobile structures. Laminates with varying aluminium thickness fractions, fiber volume fractions and orientation in the layers of GFRP were
Materials Research. Publicado em: 27/03/2012
-
6. Alterações sistêmicas e comportamentais de interesse odontológico em pacientes com síndrome de Down / Dental implications of systemic and behavior alterations in Downs syndrome patients
Downs syndrome (DS) is the most common genetic disorder and it is caused by the trissomy of 21 chromosome. It is characterized by mental retardation, physical alterations and several systemic co morbidities. The aim of this study was to evaluate behavior and systemic alterations with dental implications in DS patients and discuss the dental management of the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2011
-
7. Influence of body weight and substrate granulometry on the reproduction of Limnodrilus hoffmeisteri (Oligochaeta: Naididae: Tubificinae)
Limnodrilus hoffmeisteri Claparede, 1862 is a cosmopolitan Oligochaeta widely used as indicator of organic pollution in water bodies. Previous contributions have shown the effects of organic matter and temperature on the life history of the species, although very little is known about the factors that influence its reproduction. This study aimed 1) to test w
Zoologia (Curitiba). Publicado em: 2011-10
-
8. Ideias associadas à fração: abordagens históricas e didáticas
Neste estudo são enfatizados aspectos históricos e abordagens didáticas relativos às frações, tendo em vista a teia de sentidos e significados a que estão ligadas, em particular os de medida, quociente e razão. Através de um levantamento qualitativo acerca da abordagem do assunto em questão nos livros de Ensino Fundamental e apoiada nos autores Rom
Publicado em: 2011
-
9. Estado e agricultura no primeiro governo Vargas (1930-1945) / State and agriculture in the first Vargas government (1930-1945)
The period between 1930 and 1945 is characterized by the change in the relationship between the state and economy, especially among state and agriculture, the main productive sector of Brazils economy during the Revolution of 1930. The agricultural sector and agricultural policy adopted by the first President Vargas administration influenced the structur
Publicado em: 2010
-
10. Resultados da associação de braquiterapia de alta taxa de dose à teleterapia no câncer da próstata / Results of the association of high dose-rate brachytherapy with external beam irradiation in prostate cancer
INTRODUCTION: high dose-rate brachytherapy (HDR) for prostate cancer may be a nice treatment option for dose escalation as a boost, when associated to external beam irradiation, mainly if 3D conformal or more advanced technology is not available. PURPOSE: this study analyzes the results and toxicities of HDR brachytherapy boost prior to external beam radioth
Publicado em: 2010
-
11. Adaptation of the double blind placebo controlled oral food challenge for the cows milk allergy diagnosis mediated by immunoglobulin E, in pediatric age / Adaptação do teste de provocação oral duplo cego placebo controlado para o diagnóstico de alergia às proteínas do leite de vaca mediada pela imunoglobulina E, na faixa etária pediátrica
The Double Blind Placebo Controlled Food Challenge (DBPCFC) is considered an important method for food allergy diagnosis, nevertheless it is not standardized among us. The aim of this study was to adapt DBPCFC for cows milk allergy (CMA) diagnosis in children and adolescents. A secondary aim was to describe the relation between history of atopy and laborator
Publicado em: 2009
-
12. Diversidade funcional: como incluir a variação intraespecífica e o efeito do fogo em comunidades vegetais do cerrado
Biological diversity may influence the structure and functioning of communities in several ways, for example, altering the species resource complementarity. However, traditional diversity measures (such as species richness or diversity indices as Shannon or Simpson) have being considered as rough biodiversity estimators. In that sense, several authors sugges
Publicado em: 2009