Macroaggregates
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Formation of Macroaggregates and Organic Carbon in Cocoa Agroforestry Systems
ABSTRACT The objective of this study was to analyze the biological contribution to macroaggregate formation under cocoa agroforestry systems, as well as to evaluate the potential of macroaggregates to store carbon. The variation of the populations of macrofauna and the relationship with the morphology of aggregates was monitored in five agroforestry systems
Floresta Ambient.. Publicado em: 05/09/2019
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2. Soil quality indicators under management systems in a Quilombola community in the Brazilian Cerrado
ABSTRACT: Soil management systems exert different effects on soil attributes, especially on the organic matter content, and, consequently, the soil aggregation. The aim of this study was to evaluate the impact of different land uses practiced by quilombola family farmers on water stable aggregates, glomalin and organic carbon in soil aggregates. Soil samples
Sci. agric. (Piracicaba, Braz.). Publicado em: 30/05/2019
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3. Soil aggregation and carbon stabilization in burn and no-burn sugarcane management systems
ABSTRACT Retaining sugarcane straw over the soil after harvesting can improve soil structure and increase soil carbon stabilization, mainly in macroaggregates. We evaluated the carbon content in the aggregate classes in areas under burn and no-burn (adopted for five years) sugarcane management systems, focusing on the superficial layer (0.00-0.20 m). The exp
An. Acad. Bras. Ciênc.. Publicado em: 25/06/2018
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4. Chemical Properties in Macroaggregates of a Humic Dystrudept Cultivated with Onion under No-Till and Conventional Tillage Systems
ABSTRACT Nutrients present in soil aggregates are essential for maintaining the productive capacity of agroecosystems and environmental quality. The aim of this study was to evaluate the chemical properties of macroaggregates of a Humic Dystrudept cultivated with onions under a no-till vegetable system (NTVS) compared to the conventional tillage system (CTS)
Rev. Bras. Ciênc. Solo. Publicado em: 22/06/2017
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5. Water-Stable Aggregates and Associated Carbon in a Subtropical Rice Soil Under Variable Tillage
ABSTRACT Tillage systems can influence C sequestration by changing aggregate formation and C distribution within the aggregate. This study was undertaken to explore the impact of no-tillage without straw (NT-S) and with straw (NT+S), and moldboard plow without straw (MP-S) and with straw (MP+S), on soil aggregation and aggregate-associated C after six years
Rev. Bras. Ciênc. Solo. Publicado em: 2016
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6. Relationships between organic carbon fractions and physical properties of an Argentine soil under three tillage systems.
Um ensaio de campo foi feito com monocultura de milho em um solo Argiudoll tipico em Cordoba, Argentina. Avaliaram-se os efeitos de tres sistemas de cultivo: plantio direto (PD), cultivo reduzido (CR) e cultivo convencional com arado de aiveca (CC) sobre o carbono organico total (CO), carbono da biomassa microbiana (CBM), estabilidade estrutural, densidade d
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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7. The Private Memory of Aggregate Shocks
We study constrained efficient aggregate risk sharing and its consequence for the behavior of macro-aggregates in a dynamic Mirrlees’s (1971) setting. Privately observed idiosyncratic productivity shocks are assumed to be independent of i.i.d. publicly observed aggregate shocks. Yet, private allocations display memory with respect to past aggregate shocks,
Escola de Pós-Graduação em Economia da FGV. Publicado em: 10/07/2010
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8. Estoque e qualidade da matéria orgânica do solo em áreas cultivadas com café sob sistemas agroflorestal e a pleno sol / Soil organic matter stock and quality in agroforestry and full sun coffee systems
Soil organic matter (SOM) restoring is considered a main goal in the enhancement of soil quality. The evaluation of changes in the SOM as a result of soil management practices is fundamental to identify strategies to increase agricultural production, avoiding soil degradation and decreasing the emission of greenhouse gases. In Brazil, no-tillage has been bro
Publicado em: 2009
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9. Estudos de interação de β2-glicoproteína I em solução aquosa e com interfaces lipídicas / Study of interaction between β2- glycoprotein I in aqueous solution and with lipid interfaces
β2GPI is a blood glycoprotein circulating free or bound to lipoproteins. β2GPI adsorbs to negatively charged surfaces, acting as anticoagulant and modulator of inflammation. This work was designed to characterize the interaction between protein molecules and among protein molecules and lipid surfaces. The β2GPI SDS-PAGE and immunoblot revealed
Publicado em: 2008
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10. Uneven Distribution of Maternal and Fetal Placental Blood Flow, as Demonstrated Using Macroaggregates, and Its Response to Hypoxia*
A technique is described for studying the distribution of blood flow to the maternal and fetal placental vessels in sheep and dogs with radioactive labeled macroaggregates of albumin.
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11. Lipoprotein macroaggregates in bronchoalveolar lavage fluid from patients with diffuse interstitial lung disease.
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12. 188Re radiopharmaceuticals for radiosynovectomy: evaluation and comparison of tin colloid, hydroxyapatite and tin-ferric hydroxide macroaggregates
BioMed Central.