Carbon Balance
Mostrando 1-12 de 180 artigos, teses e dissertações.
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1. Influence of the Capping Agent PVP of the Outer Layer of Pd Nanocubes Surface on the Catalytic Hydrogenation of Unsaturated C−C Bonds
The excess of capping agents used during the synthesis of nanoparticles is usually removed by solvent washing. The influence of the amount of polyvinylpyrrolidone (PVP) capping agent in the catalytic activity of palladium nanocubes was evaluated, after different numbers of washing cycles in the purification step performed after the syntheses of the nanoparti
J. Braz. Chem. Soc.. Publicado em: 2020-05
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2. Comparison of electrolyte and acid-base balances of Dorper breed ewes between single and twin pregnancies
RESUMO: Durante a gestação ocorrem modificações metabólicas nas ovelhas que podem predispor a ocorrência de transtornos metabólicos, dos quais se destaca a toxemia da prenhez (TP). A hemogasometria é um exame que detecta alterações nos equilíbrios ácido-básico e eletrolítico de forma eficaz. Os objetivos deste estudo foram estudar os equilíbri
Pesq. Vet. Bras.. Publicado em: 02/12/2019
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3. Balanço de carbono em cidades da Amazônia: estudo de caso em Belém, Brasil
Resumo O município de Belém, no Pará, tem apresentado crescimento contínuo de sua área urbanizada e da frota de veículos nas últimas décadas. Essas mudanças estão também associadas a reduções na área de cobertura vegetal e ao aumento das emissões de CO2 locais. Há, portanto, a necessidade de se entender, de maneira integrada, a dinâmica das
urbe, Rev. Bras. Gest. Urbana. Publicado em: 25/11/2019
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4. Cover cropping system and mulching can shape soil microbial status in fruit orchards
ABSTRACT The use of cover crop in agricultural fields has been well elucidated, especially regarding nitrogen fixation from legume crops and their function as weed protection. Furthermore, to cover crops can benefit the soil microbial community. This study aimed to evaluate and compare the benefits of mulching and cover cropping systems on soil microbial gro
Sci. agric. (Piracicaba, Braz.). Publicado em: 04/11/2019
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5. Clinical and blood gas analysis of calves conceived by artificial insemination, in vitro fertilization and animal cloning
RESUMO: Para que ocorra adaptação extra-uterina bem sucedida é necessário que o neonato consiga estabelecer suas funções respiratórias de maneira eficaz, garantindo oxigenação eficiente e boa vitalidade. Distúrbios respiratórios são os maiores causadores de óbito durante o período neonatal em bovinos, e essa mortalidade é ainda mais expressiva
Pesq. Vet. Bras.. Publicado em: 30/09/2019
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6. DEVELOPMENT OF INEXPENSIVE CELLULOSE-BASED SORBENTS FOR CARBON DIOXIDE
ABSTRACT Aqueous amine solutions are benchmark solvents for CO2 capture and their operational drawbacks are well-known. In order to overcome these problems, the support of amines on solid materials appears as an option for CO2 capture. Cellulose is a versatile and low-cost material that can be used as a support. This study reports chemical modification of ce
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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7. Simultaneous removal of nitrogen and organic carbon from swine wastewater using the pre-denitrification/nitrification process
Resumo Os efluentes dos sistemas de produção de animais confinados (SPACs), se não tratados adequadamente antes do descarte, podem interferir significativamente no balanço natural do nitrogênio no meio ambiente. Nesse trabalho, um sistema Lutzak-Ettinger modificado (MLE), consistindo de dois reatores sequenciais, um pré-desnitrificante (RD) e um nitrif
Rev. Ambient. Água. Publicado em: 25/03/2019
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8. Mass balances of major solutes, nutrients and particulate matter as water moves through the floodplains of the Pantanal (Paraguay River, Brazil)
RESUMO Na Bacia do Alto Paraguai, formadora do Pantanal Mato-grossense, uma das maiores áreas úmidas do mundo, os rios fazem a conexão entre o planalto e a extensa planície de inundação. Agropecuária, potencial erosivo associado a desmatamento elevado, efluentes urbanos e dezenas de barramentos hidrelétricos no planalto podem alterar o transporte de
RBRH. Publicado em: 04/02/2019
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9. Carbon in Physical Fractions and Organic Matter Chemical Composition of an Acrisol after Amazon Forest Burning and Conversion into Pasture
The aim of this study was to investigate impacts of Amazon Forest (AF) fire and conversion to pasture on carbon accumulation in particle size fractions and organic matter (OM) composition of an Acrisol. Soil samples were collected (0.00-2.00 m depth) in three sites: native AF (NAF); AF under natural regeneration for two years after burning (BAF); 23-years ol
J. Braz. Chem. Soc.. Publicado em: 2019-02
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10. Antiherbivory defense mechanisms along an environmental gradient in restinga
ABSTRACT Plant-herbivore interactions have directed the evolution of defense mechanisms in plants, which can vary intraspecifically according to environmental quality. This study evaluated variation in the production of antiherbivory defenses in plant species distributed along an environmental gradient of restinga. The study was performed in Parque Estadual
Acta Bot. Bras.. Publicado em: 21/09/2017
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11. INTEGRATED ENVIRONMENTAL FOOTPRINT INDEX (IEFI): MODEL DEVELOPMENT AND VALIDATION
ABSTRACT: Freshwater is a valuable resource worldwide given the growing demand of the global population. This study aimed to develop and validate an integrated assessment model by means of environmental footprint indices (water, ecological, and carbon), which measure the environmental sustainability of heterogeneous communities, people, and countries. An env
Eng. Agríc.. Publicado em: 2017-09
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12. Efficacy of Carbon Microcoils in Relieving Cervicogenic Dizziness
Abstract Introduction Cervical pain contributes to postural deviations and imbalance. Nanotechnology may be used for the treatment of neck pain by fixing to the skin small rounds silicone patches containing double spiral carbon nanotubes arranged in the form of a coil (Helical), which would then relieve dizziness caused by muscular contraction. Objective
Int. Arch. Otorhinolaryngol.. Publicado em: 2017-03