Value Net
Mostrando 1-12 de 374 artigos, teses e dissertações.
-
1. An alternative energy generation from charcoal produced from Brazilian pine (Araucaria angustifolia (Bert.) O. Ktze) seed residues
The perspective is that the energy demand will grow in the coming decades worldwide. The search for renewable energy sources is urgent and necessary. Residual biomass may be a promising source of raw material for obtaining bioenergy. Thus, this research sought to evaluate the energetic and physicochemical properties of residues from the seeds of Brazilian pi
Química Nova. Publicado em: 2022
-
2. The value of oxygen index and base excess in predicting the outcome of neonatal acute respiratory distress syndrome
Abstract Objective This study aimed to identify the predictors and threshold of failure in neonatal acute respiratory distress syndrome. Methods Newborns with severe acute respiratory distress syndrome aged 0-28 days and gestational age ≥36 weeks were included in the study if their cases were managed with non-extra corporal membrane oxygenation treatment
J. Pediatr. (Rio J.). Publicado em: 2021-08
-
3. Comparison between traditional project appraisal methods and uncertainty analysis applied to mining planning
Abstract Long-term mining planning is a complex process which involves a large number of variables and uncertainties. Traditional discount cash flow (DCF) is usually used in the evaluation of mining projects. DCF includes net present value (NPV), internal rate of return (IRR), and profitability index (PI). A sensitivity analysis is usually carried out to eva
REM, Int. Eng. J.. Publicado em: 2020-06
-
4. Influence of water level in mine sequencing applied to strategic mining planning
Abstract Developing mine sequencing involves a number of factors and a large amount of information, and consequently the profitability of the project will strongly depend on the production schedule. A mining project may be conditioned to non-optimal sequencing, which may affect the economic results of the project and also lead to an inadequate utilization of
REM, Int. Eng. J.. Publicado em: 2020-06
-
5. INCREASED ENERGY COGENERATION IN THE SUGAR-ENERGY SECTOR WITH THE USE OF SUGARCANE STRAW, ELECTRIFICATION OF DRIVES, AND HIGH-DRAINAGE ROLLERS IN THE EXTRACTION
ABSTRACT The sugar-energy sector stands out in the production of electrical energy in the Brazilian energy matrix. The updating of Law 9,427 allowed increasing the limit of power injected in the transmission or distribution systems of existing projects from 30 to 50 MW, encouraging studies of expansion and/or implementation of new cogeneration projects. This
Eng. Agríc.. Publicado em: 2020-04
-
6. Analysis of the impacts of slope angle variation on slope stability and NPV via two different final pit definition techniques
Abstract The traditionally and widely used Lerchs-Grossmann algorithm presents well-known limitations that newer propositions attempt to overcome. The direct block schedule (DBS) methodology, which has gained relevance with computational advances, obtains the final pit as a natural result of production sequencing, different from Lerchs-Grossmann-based algori
REM, Int. Eng. J.. Publicado em: 2020-03
-
7. The role of cultural engagement for older adults: an integrative review of scientific literature
Resumo Objetivo: Compreender o papel do engajamento cultural na vida dos idosos. Método: Foi feita revisão integrativa da literatura, considerando publicações do período de 2014 a 2019, nos idiomas inglês, português e espanhol. Foram utilizadas como fontes de informação: Scopus, Web of Science, MEDLINE/PubMed, CINAHL, PsycNET®, LILACS, SciELO Cit
Rev. bras. geriatr. gerontol.. Publicado em: 13/01/2020
-
8. Technical and economic viability of the installation of a hybrid solar-wind generation system in a Brazilian industry
Abstract The demand for electricity is growing worldwide. At the same time, the non-renewable natural resources that account for a large proportion of the global energy matrix are rapidly depleting, which will pose a major challenge in the near future. Therefore, micro-grid models that use renewable energy sources, such as solar and wind, are rapidly develo
Braz. arch. biol. technol.. Publicado em: 25/11/2019
-
9. Integrated project of a smart microgrid allied with energy management: An initiative to reduce electrical energy costs
Abstract Electricity is undoubtedly one of the most important resources in the modern world. As the demand for electric energy increases, conventional resources that are transformed into electric energy are being exhausted, generating a need to search for alternative sources, resulting in a significant increase in energy costs. This study presents an integra
Braz. arch. biol. technol.. Publicado em: 25/11/2019
-
10. Análise do potencial de aproveitamento energético de biogás de aterro e simulação de emissões de gases do efeito estufa em diferentes cenários de gestão de resíduos sólidos urbanos em Varginha (MG)
RESUMO O presente trabalho propõe avaliar a viabilidade econômica e ambiental de aproveitamento energético do biogás do aterro sanitário do município de Varginha (MG), além de analisar as emissões de gases de efeito estufa (GEE) e o uso de energia em diferentes cenários hipotéticos de gerenciamento de resíduos sólidos urbanos (RSU). Considerou-se
Eng. Sanit. Ambient.. Publicado em: 25/11/2019
-
11. Cuttings of Euphorbia phosphorea Mart and Euphorbia enterophora Drake at different concentrations of indole-butyric acid and analysis of economic viability
Resumo As definições de protocolos de produção de mudas de espécies ornamentais, com a utilização de reguladores vegetais, demandam análise econômica que demonstrem ao viveirista os reais retornos financeiros de sua atividade. O objetivo foi avaliar a influência da utilização do regulador ácido indol butírico (IBA) na promoção do enraizamento
Ornam. Hortic.. Publicado em: 28/10/2019
-
12. THE ROLE OF ORGANIZATIONAL SUPPORT IN THE RELATIONSHIP BETWEEN INDIVIDUAL AND ORGANIZATIONAL LEARNING
RESUMO Objetivo: Compreender a relação entre resultados de aprendizagem individual de competências (AI) e resultados de aprendizagem organizacional (AO), assim como o papel mediador dos suportes organizacionais à transferência de aprendizagem (SOT) na conversão de AI em AO. Originalidade/valor: Medida de AO relacionada à AI, pois, em regra, pesquisa
RAM, Rev. Adm. Mackenzie. Publicado em: 24/10/2019