Characterization
Mostrando 13-24 de 28801 artigos, teses e dissertações.
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13. Thermal characterization of soil-cement bricks using mining tailings
Abstract Soil-cement bricks are earth construction materials that have been gaining prominence due to their environmental advantages. The Brazilian Technical Standard NBR 8491 establishes physical and mechanical procedures to characterize these bricks. However, the thermal characterization is an important assessment, since it is related to the building’s t
REM - International Engineering Journal. Publicado em: 2022
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14. Integrated Antennas on MnM Interposer for the 60 GHz Band
Abstract In this article, antennas for the 60 GHz ISM band designed to be integrated to a new high-frequency, low-cost interposer technology called Membrane-nanowire-Membrane (MnM) are discussed, manufactured, and measured. Also, an antenna characterization system under development at the Microelectronic Laboratory (LME-USP) is introduced, showing promising
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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15. Extraction and Characterization of Pequi Seed Oil for Biodiesel Production: A Green Management of Waste to Biofuel Using Ethanol and Heterogeneous Catalysis
This work reports the characterization of a vegetable oil extracted from pequi seeds, an agroindustrial residue, and its biodiesel production using ethanol and heterogeneous catalysis. The pequi seeds showed 40.73 wt.% of extractive content, which represents a large amount of the biomass composition. The crude oil extracted from the pequi seeds with ethanol
Journal of the Brazilian Chemical Society. Publicado em: 2022
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16. Magnetic concentration route for recovering pellet feed fines stored in a mining dam
Abstract The greatest and noblest challenge of mining engineering for the present and the future of iron ore treatment could be considered as the pursuit of optimizing the use of mineral resources. The use of mining tailings, in the mineral sector itself, or in another industrial branch, meets the needs of circular economy as it increases the useful service
REM - International Engineering Journal. Publicado em: 2022
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17. Characterization of partnerships and collaborations in US cities' urban resilience plans
Abstract Purpose The United Nations Sustainable Development Goal (UN SDG) number 13 calls for urgent action to combat climate change impacts. Urban resilience planning documents often articulate partnerships and collaborations (P&Cs) as critical strategies. This study aims to identify the actors, the topics, processes, and visions of collaboration. Design/
RAUSP Management Journal. Publicado em: 2022
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18. Properties and technical characteristics of Casira pottery, Jujuy, Argentina
Abstract In this work, the results of a multi-technique characterization of a type of pottery production with high cultural and economic relevance from the only potter town in Argentina are presented and correlated. Raw materials, a prepared paste, and ceramic samples were studied. Chemical, structural, textural, microstructural, and thermal features were as
Cerâmica. Publicado em: 2022
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19. Molecular characterization of Kappa-casein and β-lactoglobulin genes in Anatolian Black cattle and Holstein breeds
RESUMO κ-Cn e β-lactoglobulina são importantes genes candidatos associados à produção de leite e ao teor de proteína do leite. A presente investigação é realizada para determinar o status de polimorfismos dos genes κ-Cn e β-lactoglobulina nas raças Anatolian Black cattle e Holstein. A técnica PCR-RFLP foi utilizada para determinar os polimorfis
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2022
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20. Oxigênio no contexto da COVID-19: o que sabemos sobre a molécula que respiramos e o papel central da química
OXYGEN IN THE COVID-19 CONTEXT: WHAT WE KNOW ABOUT THE MOLECULE WE BREATHE AND THE CENTRAL ROLE OF CHEMISTRY. In this work, the role of chemistry in the coronavirus disease 2019 (COVID-19) pandemic is highlighted through the medical oxygen supply crises in Brazil, as an example of oxygen utility in health. Starting from oxygen chemical characterization, the
Química Nova. Publicado em: 2022
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21. Morphocultural and pathogenic characterization of Colletotrichum gossypii and Colletotrichum gossypii var. cephalosporioides under different temperatures
RESUMO Considerando a importância da identificação de espécies de Colletotrichum associadas à cultura do algodoeiro, objetivou-se realizar a caracterização morfológica e patogênica de isolados de Colletotrichum gossypii var. cephalosporioides e de Colletotrichum gossypii submetidos a diferentes temperaturas. Foram utilizados cinco isolados de C. gos
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2022
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22. CHARACTERIZATION OF GEOSPATIAL, MORPHOMETRIC, AND ENVIRONMENTAL DYNAMICS OF THE MARIANA MICROBASIN IN ALTA FLORESTA-MT, BRAZIL
ABSTRACT River basin environmental diagnosis and monitoring are fundamental for water resource use and conservation plans, as these systems integrate different landscape elements and may undergo impacts and changes of different levels and scales. In this context, this work aimed to characterize the geospatial, morphometric, and environmental dynamics in the
Engenharia Agrícola. Publicado em: 2022
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23. Characterization of Commercially Available Turmeric for Use in Pharmaceutical Products and Food Supplements
We addressed some physicochemical and biological differences in commercial turmeric, acquired from both handling pharmacies and stores selling natural products for quality assessment. For this, it was determined the melting point, antioxidant activity by 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH), antimicrobial activity via the agar disk-diffusion assay,
Journal of the Brazilian Chemical Society. Publicado em: 2022
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24. REFLEXIVITY, ROLE CONFLICTS, AND THE MEANING OF ENGLISH SELF PRONOUNS
Abstract This study offers an innovative, sign-based analysis of English self pronouns (myself, yourself, herself, etc.). While rejecting the traditional characterization of these forms as reflexive pronouns, the study borrows from the tradition by analyzing these forms as a kind of emphatic pronoun. The forms’ distribution can be explained by positing tha
Manuscrito. Publicado em: 2022