Enriched Fractions
Mostrando 1-12 de 460 artigos, teses e dissertações.
-
1. Synthesis of enriched biochar as a vehicle for phosphorus in tropical soils
RESUMO O fósforo (P) é um dos nutrientes que mais limita a produtividade agrícola, principalmente em solos tropicais. Biocarvão enriquecido tem sido proposto com o intuito de incrementar a biodisponibilidade de P e de outros nutrientes no solo. Assim, objetivou-se avaliar a disponibilidade do fósforo em biocarvão fosfatado (composto de biomassa e solo)
Acta Amaz.. Publicado em: 04/11/2019
-
2. In vitro kinetics of reticulocyte subtypes: maturation after red blood cell storage in additive solution-1 (AS-1)
ABSTRACT Background: Reticulocytes are immature red blood cells containing RNA remnants. Their population kinetics has been documented under various in vivo and in vitro conditions, including after storage of red blood cells in blood banks. The purpose of this study was to describe the influence of blood bank storage on the kinetics of reticulocyte disappea
Hematol., Transfus. Cell Ther.. Publicado em: 2018-06
-
3. Actiflagelin, a new sperm activator isolated from Walterinnesia aegyptia venom using phenotypic screening
Abstract Background Sperm contains a wealth of cell surface receptors and ion channels that are required for most of its basic functions such as motility and acrosome reaction. Conversely, animal venoms are enriched in bioactive compounds that primarily target those ion channels and cell surface receptors. We hypothesized, therefore, that animal venoms shou
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 22/02/2018
-
4. Is Composting a Route to Solubilize Low-Grade Phosphate Rocks and Improve MAP-Based Composts?
ABSTRACT: In alkalinized and Ca-rich composts, solubilization of apatite from phosphate rocks (PRs) is not guaranteed; however, chelating agents and humified substances produced during composting may alter the soluble contents and P forms of monoammonium phosphate (MAP)-based composts. These effects may depend on the proportions of organic wastes and P sourc
Rev. Bras. Ciênc. Solo. Publicado em: 15/02/2018
-
5. Anti-inflammatory action of ethanolic extract and clerodane diterpenes from Casearia sylvestris
ABSTRACT The present study aimed to investigate the anti-inflammatory activity of ethanolic extract from Casearia sylvestris Sw., Salicaceae, leaves and to identify the compounds responsible for this activity. The ethanolic extract from C. sylvestris leaves was fractionated by solid phase extraction and the chemical composition of extract and fractions were
Rev. bras. farmacogn.. Publicado em: 2017-08
-
6. Local Anesthetic Activity from Extracts, Fractions and Pure Compounds from the Roots of Ottonia anisum Spreng. (Piperaceae)
ABSTRACT Piperaceae species can be found worldwide in tropical and subtropical areas and many of them have been used for centuries in traditional folk medicine and in culinary. In Brazil, species of Piperaceae are commonly used in some communities as local anesthetic and analgesic. Countrified communities have known some species of the genus Ottonia as "anes
An. Acad. Bras. Ciênc.. Publicado em: 2016-12
-
7. Antiviral activity of Myracrodruon urundeuva against rotavirus
ABSTRACT Myracrodruon urundeuva Allemão, Anacardiaceae, is a medicinal plant widely found in Brazil, especially in the northern region. In our previous study, the ethanolic extract from leaves of M. urundeuva showed antiviral activity against simian rotavirus SA-11. Here, the crude extract was subjected to fractionations in order to subsequently work with m
Rev. bras. farmacogn.. Publicado em: 2016-04
-
8. Triterpenes from the Protium heptaphyllum resin - chemical composition and cytotoxicity
Protium heptaphyllum (Aubl) Marchand, Burseraceae, is popularly used as an analgesic and anti-inflammatory agent. However, the cellular mechanism of action remains unknown. This study aims to evaluate the chemical composition of P. heptaphyllum resin and cytotoxicity on a breast cancer cell line (MCF-7). The chemical composition of the resin was determined b
Rev. bras. farmacogn.. Publicado em: 2014-08
-
9. Fractionation of carbohydrates and protein and rumen degradation kinetic parameters of brachiaria grass silage enriched with rice bran
This experiment was conducted to evaluate the protein and carbohydrate fractions, and to estimate the in situ rumen degradation kinetic parameters of Brachiaria decumbens grass silage with inclusion of rice bran. Five rice bran inclusion levels were tested: 0, 10, 20, 30 and 40% of the natural matter, distributed into a completely randomized design with five
R. Bras. Zootec.. Publicado em: 2014-03
-
10. Evaluation of the properties of iron oxide-filled castor oil polyurethane
The aim of this study was to obtain and evaluate the electrical, thermal and mechanical properties of iron oxide-filled castor oil polyurethane (PU/Fe2O3). The iron oxide used in this study was a residue derived from the steel pickling process of a Brazilian steel rolling industry. Polymeric composites with different iron oxide volume fractions (2.5, 5.0, 7.
Mat. Res.. Publicado em: 26/10/2012
-
11. Efeitos do estrogênio, raloxifeno e extrato de soja rico em genisteína sobre o osso de ratas adultas ovariectomizadas previamente androgenizadas / Effects of estrogen, raloxifene and genistein-rich soy extract on bone of ovariectomized adult female rats and previously androgenized
INTRODUCTION: Hypoestrogenism can determine bone mineral loss, resulting in decreased bone quality. To prevent that process, several drugs are administered, which can lead, however, to important side effects. Therefore, it is questionable whether the use of estrogen associated with those substances could minimize the adverse effects and maintain bone mineral
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/11/2011
-
12. Atividade anticâncer in vitro e in vivo de Psidium guajava L. (nome popular: goiabeira) / Psidium guajava L. (popular name guava) in vitro and in vivo anticancer activity
Anticancer drug research based on screening of natural sources enabled the discovery of several drugs that are used in cancer treatment. This project aimed to evaluate the in vitro and in vivo anticancer activity of Psidium guajava L. (popular name: guava), elected for its ethnopharmacological use for antiparasitic activity. After harvesting, the vegetal mat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2011