Ambient Processes
Mostrando 1-12 de 97 artigos, teses e dissertações.
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1. Designing and fabrication of a low-cost dip-coater for rapid production of uniform thin films
In this work, a self-made dip-coater equipment was developed for the fabrication of thin films. The assembly of the apparatus was carried out using simple mechanical and electronic pieces, recycle parts, and spending an inexpensive budget suitably. The production, software design, and features of the device were focused on the sol-gel dip-coating method, whi
Química Nova. Publicado em: 2022
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2. A RENEWABLE CATALYST FOR A RENEWABLE CHEMICAL: GRAM-SCALE CONVERSION OF FURFURAL TO FURFURYL ALCOHOL BY THE CARROT (Daucus carota)
The bioconversion of furfural to furfuryl alcohol using only carrot bits in water at room temperature and ambient pressure is presented. This reaction led to the bioreduction of furfural with 99% conversion and 99% selectivity to an alcohol. This simple and “fully” green process may represent an alternative to classic hydrogenation processes. Also, witho
Quím. Nova. Publicado em: 2020-01
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3. Reserve metabolism of stored and germinated Araucaria angustifolia seeds
ABSTRACT. Germination metabolism of recalcitrant seeds of Araucaria angustifolia is activated in storage, which complicates the seeds conservation and utilization. This study aimed to identify the changes in the reserve metabolites of A. angustifolia seeds throughout storage in order to understand the processes of hydrolysis caused by germination metabolism.
Acta Sci., Agron.. Publicado em: 23/09/2019
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4. Uso de procesos pirometalúrgicas para la obtención de renio
ABSTRACT Rhenium is a metal that has different obtainment methods. The most used comes from molybdenite roasting. Traditional pyrometallurgical methods like oxidizing roasting are applied, but there are also innovative pyrometallurgical methods as is roasting with carbothermic reduction. This paper presents the behavior of rhenium onto two different roasting
Matéria (Rio J.). Publicado em: 19/07/2018
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5. Crystallographic Aspects Regarding the Insertion of Ag+ Ions into a Hydroxyapatite Structure
The objective of this study was to evaluate how silver can be inserted into hydroxyapatite (HA) via two distinct processes: co-doping with CO32- via precipitation in an aqueous medium and immersion of preformed HA crystals into Ag+ solutions. It was concluded that although Ag+ and Ca2+ have different radii, the accommodation of Ag+ ions in the Ca2+ sites of
Mat. Res.. Publicado em: 2015-08
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6. O uso da lógica fuzzy no controle das temperaturas de um conjunto gaseificador/combustor de biomassas / Using fuzzy logic to control the temperatures of a set gasifier/combustor of biomasses
This study consisted in designing and building a concurrent biomass gasifier that, when attached to a gas combustor, produced a mix of hot air and ambient air to be used for drying grains, among other things. It aimed at controlling the combustion zone gasifier temperature and exhaust hot air temperature. The theoretical mathematical framework chosen to deve
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/04/2012
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7. Determinação da capacidade antirradicalar de produtos naturais utilizando-se a quimiluminescência do luminol e ensaios fotométricos com radicais estáveis / Determination of natural product antiradical capacity using luminol chemiluminescence and photometric assays with stable radicals
Living organisms are exposed to the oxidative action of reactive oxygen species (ROS), causing a series of degenerative diseases such as cancer, atherosclerosis, diabetes, arthritis and heart disease. Studies have shown that consumption of antioxidant substances in the daily diet can prevent these oxidative processes that cause premature aging of the organis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/09/2011
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8. Seleção de covariáveis para ajuste de regressão logística na análise de abundância de invertebrados edáficos em diferentes agroecossistemas / Covariates selection for logistic regression adjustment in analysis of edaphic invertebrates abundance in different agroecosystems
Logistic regression is the analysis usual statistical method used to verify the relationship between a dichotomous variable response and the interest explanatory variables. This work aimed to carry out a study about the factors influencing the invertebrates abundance on the soil under different management forms, using the logistic regression. This objective
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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9. Nitric oxide release using natural rubber latex as matrix
Nitric oxide (NO) is a diffusible messenger that has been involved in numerous physiological processes ranging from vasodilatation and antimicrobial properties to wound healing. The beneficial effects can be attributed to the role NO plays in angiogenesis, inflammation and tissue remodeling. In the present work, a polymeric device for the sustained site spec
Materials Research. Publicado em: 26/08/2011
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10. Uso de biossólido em plantios florestais.
ABSTRACT: With the increase of the population density in the cities, a great amount of residual waters passed to be generated. The usual practical ones of disposal of the sewage sludge, as the "sanitary and controlled embankment" or the "oustings the opened sky", are alternative of cost to each day more raised or have potential to produce impacts ambient und
Planaltina. Publicado em: 2011
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11. Avaliação de uma fábrica de ração para aves: instalações, processos e produto final / Evaluation of a feed mill for poultries: installation, process, and final product
The work of research aimed to characterize and analyze qualitatively and quantitatively a feed mill for poultries. For this, an initial study to evaluate the feed mill using the manual of Good Manufacture Practice of Feed and the international norm of quality management ISO 9000:2000. The results verified that the feed mill did not respond in full the mentio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/10/2010
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12. EVALUATION OF OPERATIONALIZATION OF ONE W.T.U. WITH REACTOR UASB USING NEURAL NETWORK IN THE PROCESS OF ENVIRONMENT MANAGEMENT / AVALIAÇÃO DA OPERACIONALIDADE DE UMA E.T.E. COM REATOR UASB UTILIZANDO REDE NEURAL NO PROCESSO DE GESTÃO AMBIENTAL
With the increasing commitment of companies and people with the environment question, this subject becomes door of entrance for many commercial transactions, what it becomes the implantation Environmental Management Standards (EMS) a something almost with priority. This work aims evaluate and establishes parameters of control to reactor U.A.S.B. (Upflow Anae
Publicado em: 2010