Rice
Mostrando 1-12 de 2791 artigos, teses e dissertações.
-
1. Use of graphite in the distribution of rice seeds with constant flow seed metering device
RESUMO O desempenho do mecanismo dosador de semente é avaliado de acordo com a uniformidade da deposição ao longo da operação e sua interferência na qualidade das sementes. O objetivo do experimento foi avaliar a influência da utilização do grafite, na homogeneidade de deposição e no índice de quebras das sementes de arroz, distribuídas com dosa
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2023
-
2. Management of rice straw in rice-soybean succession in tropical lowland
ABSTRACT This study aimed to analyze rice straw alternative managements to maximize the rice-soybean succession yield and to quantify their impacts on soil properties. The experiment was set up in a completely randomized design with six replicates. Nine rice straw managements were evaluated: straw burning (M1), straw harvesting (M2), straw incorporation with
Revista Ceres. Publicado em: 2022
-
3. Biogenic synthesis of silver nanoparticles from thyme extract for functionalization of a bioactive glass produced from rice husk ash
Abstract The rice husk, agro-industrial residue, stands out for having silica, the main oxide former of the bioactive glass. To avoid contamination in this biomaterial, substances with bactericidal properties, like silver can be incorporated. Thus, the objective of this work is the synthesis of silver nanoparticles to functionalize a bioactive glass synthesi
Cerâmica. Publicado em: 2022
-
4. ADSORPTION OF ATRAZINE IN RICE HUSK BIOCHARS: A PHENOMENOLOGICAL MODEL APPLIED TO EQUILIBRIUM AND KINETIC STUDIES
ABSTRACT Atrazine is an herbicide used to remove weeds in agricultural crops; however, because it is considered toxic, options for removing it from the environment are needed. Adsorption on biochar is an efficient technique for removing organic contaminants. In this study, the atrazine adsorption capacities of two biochars (BCA400 and BCA700) produced from r
Engenharia Agrícola. Publicado em: 2022
-
5. Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
Abstract The study on the physical-mechanical properties of alkali-activated materials (AAM) produced by the ‘one-part’ method was carried out. For this, residues such as fly ash and rice husk ash (RHA) were used. The alkaline activator (NaOH) was calcined together with RHA for 2 h at 750 °C. Dry mixes were prepared by replacing fly ash with 10%, 20%, a
Cerâmica. Publicado em: 2022
-
6. Durability, life cycle cost and life cycle assessment of binary mixtures with fly ash, rice husk ash and concrete demolition waste
Resumo Este estudo analisa, por meio do custo do ciclo de vida e da avaliação do ciclo de vida, a produção de misturas binárias de concreto constituídas por pozolanas artificiais e resíduos de demolição de concreto. Foram desenvolvidas dez formulações diferenciando-as quanto aos traços, conteúdo de ligantes e agregados, a fim de verificar o pote
Ambiente Construído. Publicado em: 2022
-
7. Cold stress reduces rice grain yield in temperate conditions
RESUMO O arroz é originário de climas tropicais e, quando cultivado em regiões temperadas, pode ter sua produtividade reduzida por exposição ao estresse por frio. Este estudo buscou avaliar as perdas produtivas associadas ao frio em diversas variedades de arroz e a tomada de decisão pela resemeadura da lavoura. A semeadura foi realizada em época preco
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2022
-
8. CANONICAL CORRELATIONS BETWEEN MORPHOLOGICAL AND PRODUCTION TRAITS IN SPECIAL TYPES OF RICE
RESUMO A rica diversidade genética e ampla adaptação a diversos ambientes observadas na cultura do arroz (Oryza sativa L.) fornecem recursos fundamentais para conservação e melhoramento do cereal. A análise de correlações canônicas pode ser utilizada para aumentar a eficiência de seleção de genótipos superiores, pois várias características sã
Revista Caatinga. Publicado em: 2022
-
9. Potential risks of climate variability on rice cultivation regions in the Mekong Delta, Vietnam
RESUMO Nas últimas décadas, as regiões de cultivo de arroz no Delta do Mekong têm sofrido continuamente eventos climáticos sem precedentes devido ao declínio das chuvas como parte da variabilidade climática. O objetivo do estudo foi realizar uma exploração abrangente das características da chuva em toda a área, aplicando o Índice de Anomalia de P
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2022
-
10. Production of milk analogues from rice bran protein hydrolysate using the subcritical water technique
Abstract Subcritical water treatment is a useful technique for the extraction of active compounds from biomass materials due to its short processing time, low cost, and environmental sustainability. Defatted rice bran is a by-product of rice bran oil, which still contains protein. In this study, rice bran protein was extracted using subcritical water treatme
Food Sci. Technol. Publicado em: 2021-09
-
11. Doses and application times of trinexapac-ethyl in upland rice
ABSTRACT The use of growth regulators as a technique that can reduce plant height and thus strengthen stalks, which may be an option to eliminate or reduce plant lodging, thereby avoiding crop loss. However, there is a lack of information on the subject. The purpose of this study was to evaluate the effect of the dose (0; 37.5; 75.0; 112.5 e 150.0 g ha-1 act
Rev. Ceres. Publicado em: 2021-06
-
12. Microwave-Assisted Acid Digestion: Evaluation of Reaction Vessel Design and Performance
Nowadays, microwave-assisted procedures using closed vessels with thermal, chemical, and mechanical resistance are the state-of-the-art for efficient digestion of samples. Safety issues related to sample reactivity should be considered and analytical throughput is also a critical parameter. The choice of a specific vessel for a target application is not triv
J. Braz. Chem. Soc.. Publicado em: 2021-04