Vapor Pressure
Mostrando 13-24 de 254 artigos, teses e dissertações.
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13. Influence of aseptic surge tank venting on equipment sterilization
Resumo Tanques assépticos (AST) são sistemas aplicados para estocagem do produto estéril até o envase, mantendo a condição de esterilidade comercial obtida nas etapas anteriores do processo. Para evitar a recontaminação microbiológica do produto, uma condição de esterilidade deve ser alcançada no tanque antes da produção, pela aplicação de u
Braz. J. Food Technol.. Publicado em: 14/03/2019
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14. What is the best temperature-humidity index equation to indicate heat stress in crossbred dairy calves in a tropical environment?
RESUMO: Objetivou-se determinar dentre nove equações do ITU a que melhor representa os efeitos do estresse por calor para bezerros leiteiros mestiços criados em ambiente tropical. Foram avaliados 12 bezerros, machos e fêmeas, com idade de 20 a 60 dias, criados no bezerreiro tropical. As frequências respiratória (FR) e cardíaca (FC), as temperaturas re
Cienc. Rural. Publicado em: 11/02/2019
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15. Pacotes molhados: o aumento do tempo de secagem aumenta o consumo de água (recurso natural escasso)?
Resumo Objetivo: Este estudo tem como objetivo comparar o consumo de água e energia em quatro configurações do ciclo (número de pulsos na fase de condicionamento, tempo de secagem e valor de ajuste da profundidade do vácuo) para esterilização a vapor. Métodos: Estudo descritivo de quatro diferentes configurações de ciclo: na configuração A, os
Acta paul. enferm.. Publicado em: 2019-02
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16. Biometric and Physiological Responses to Water Restriction in Moringa oleifera Seedlings
ABSTRACT A water deficit in the soil can cause water stress in plants, triggering morphological and physiological changes. The aim of this work was evaluate the ecophysiological development of moringa seedlings under controlled water restriction. The experimental design was completely randomized at 40, 60, 80, and 100% of field capacity and six replicates.
Floresta Ambient.. Publicado em: 10/12/2018
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17. Aspectos de la formación de polvo volátil en la industria del cobre primario
ABSTRACT In addition to the production of primary copper and ferro silicate slag, the formation of significant amounts of flue dust plays an increasingly important role in today’s copper industry. While valuable elements such as copper and precious metals primarily remain in the heavier, denser products, others such as zinc and lead preferably accumulate i
Matéria (Rio J.). Publicado em: 19/07/2018
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18. SORÇÃO DE CO2 UTILIZANDO LÍQUIDO IÔNICO ADITIVADO COM EXTENSORES DE ÁREA SUPERFICIAL
The study of environmentally friendly CO2 sorption agents are growing due to the need of mitigate this gas from atmosphere. Ionic Liquids (ILs) present the advantage of having low vapor pressures and being chemically and thermally stable. Besides, their properties can be designed by varying the groups of the cation or anion. Yet, these compounds present a lo
Quím. Nova. Publicado em: 2018-06
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19. The Iron Sulfides Crystal Growth from the Halide Melts
A new approach to a single crystals growth of the iron sulfide phases of definite structure and nonstoichiometry is developed and applied. This approach is based on the method of crystal growing from solution melts. This approach is based on the crystallization or recrystallization of iron sulfides from iron sulfide solutions in iron dihalide melts under fix
Mat. Res.. Publicado em: 21/05/2018
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20. Resistivity Reduction of Nanostructured Undoped Zinc Oxide thin Films for Ag/ZnO Bilayers Using APCVD and Sputtering Techniques
Nanostructured undoped zinc oxide (ZnO) thin films were deposited using atmospheric pressure chemical vapor deposition (APCVD) on glass substrates using zinc acetate dehydrate [C4H6O4Zn·2H2O, ZnAc] in less than 2 minutes for each sample. In order to reduce the resistivity of ZnO films, a very thin layer of Ag was deposited on top of the films via the sputte
Mat. Res.. Publicado em: 15/03/2018
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21. Photosynthetic capacity and water use efficiency in Ricinus communis (L.) under drought stress in semi-humid and semi-arid areas
ABSTRACT Castor bean is one of the crops with potential to provide raw material for production of oils for biodiesel. This species possess adaptive mechanisms for maintaining the water status when subjected to drought stress. A better understanding these mechanisms under field conditions can unravel the survival strategies used by this species. This study ai
An. Acad. Bras. Ciênc.. Publicado em: 07/12/2017
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22. Biodiesel Glycerides from the Soybean Ethylic Route Incomplete Conversion on the Diesel Engines Combustion Process
An evaluation was made to determine the effect of the glycerides presence resulting from the incomplete conversion of soybean biodiesel produced via alkaline catalysis and ethylic route on engine performance, and emissions in formulations containing 10 and 20% (m/m) of biodiesel used as additives in base diesel with low sulfur content and cetane ratings of 4
J. Braz. Chem. Soc.. Publicado em: 2017-12
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23. Determination of Inorganic Contaminants in Electrical and Electronic Equipment after Digestion Using Microwave-Assisted Single Reaction Chamber
A method for digestion of plastics from waste of electrical and electronic equipment (WEEE) was developed using the microwave-assisted wet digestion in single reaction chamber (MAWD-SRC). The determination of As, Cd, Co, Cr, Cu, Ni, Pb, Sb and Zn by inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectrom
J. Braz. Chem. Soc.. Publicado em: 2017-09
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24. Non-Synergistic UV-A Photocatalytic Degradation of Estrogens by Nano-TiO2 Supported on Activated Carbon
Many studies have reported significant improvements in the photocatalytic degradation capacity of TiO2 immobilized in carbonaceous materials, mainly due to a well-characterized synergistic effect. The photocatalytic degradation of the estrogens 17β-estradiol and 17α-ethynylestradiol was evaluated using 1 mg L-1 aqueous solutions, employing a nanocomposite
J. Braz. Chem. Soc.. Publicado em: 2017-04