Laboratory Essays
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Tratamiento de efluentes acuosos provenientes de la industria de biodiesel, utilizando tecnología de membranas
ABSTRACT The wastewaters from biodiesel production are generated mainly in the washing process, in this step the contaminants of biodiesel are eliminated in order to the obtained biodiesel meets with the internationals regulations. These wastes contain impurities such as methyl ester, residual oil, mono and diglycerides, soluble salts, catalyst, soap, glycer
Matéria (Rio J.). Publicado em: 19/07/2018
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2. Estudo do processo de calcinação como operação unitária adicional na pelotização de minérios de ferro com altos valores de PPC
The mineral resources from the Alegria complex, at the Mariana Ouro Preto/MG region, where Samarco´s deposits (Alegrias Norte, Centro and Sul) are located, present a significant parcel of composition related to low iron grade itabirites (below 50%) and high LOI contents (above 3.5%). The search for producing concentrates from these deposits using the curren
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/06/2011
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3. COATING CONTRIBUTION ON THE ACOUSTIC PERFORMANCE OF MASONRY WALLS / AVALIAÇÃO DA CONTRIBUIÇÃO DO REVESTIMENTO NA ISOLAÇÃO SONORA DE PAREDES DE ALVENARIA
The research presents the sound insulation in masonry walls coated with plaster. Three walls were built in laboratory, studied in specific tests. Measurements were carried out varying some components of the wall, such as the type of the block and the combinations of coarse mortar, plaster and stucco on the faces of the wall. The mortars used in the tests wer
Publicado em: 2010
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4. Produção de agua de coco (cocus nucifera) utilizando membranas de micro e ultrafiltração de celulose, PES e PVDF / Coconut water processing using micro and ultrafiltration membranes of cellulose, PES and PVDF
Coconut water is a natural drink. Lately, its consumption has been growing in both natural form and processed form, because of the coconut water health benefits. Processing methods are used, essentially, to inhibit the enzymes actions (polyphenoloxidase and peroxidase) that are responsible for coconut water color chage to rose and ensure its microbiological
Publicado em: 2010
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5. DETERMINAÇÃO DA INCERTEZA EXPANDIDA ASSOCIADA À ANÁLISE DE AÇÚCARES REDUTORES PELO MÉTODO DE LANEEYNON / DETERMINING THE UNCERTAINTY ASSOCIATED WITH THE EXPANDED ANALYSIS BY THE METHOD OF REDUCING SUGARS LANEEYNON
From the scientific viewpoint, the word uncertainty expresses doubt about an analytic result. The implementation of the concept of uncertainty of measurement is a crucial step that the Brazilian laboratories must take in the process for obtaining the certification of the ability to perform essays in accordance with the Brazilian technical norm ABNT NBR ISO/I
Publicado em: 2010
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6. Fatores protetores de risco cardiometabólico em mulheres obesas. / Protective factors of cardiometabolic risk in obese women.
Objective: to identify factors associated with low cardiometabolic risk (CMR) in obese women (ObW) seen at outpatient specialty clinics of SUS (Brazilian Social Security Health System), in the City of Salvador, Bahia, Brazil. Methods: casecontrol study, matched by age, of 306 ObW (BMI ≥ 30kg/m2), including 66 (21.6%) cases − normotensive, normoli
Publicado em: 2009
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7. Technical parameters for the white mold control using air- assisted hydraulic sprayer / Parâmetros técnicos para o controle do mofo-branco na cultura do feijão utilizando pulverizador hidráulico de barra com assistência de ar
The white mold, caused by the fungus Sclerotinia sclerotiorum, is one of the most destructive diseases of the bean plant in the world, especially in crops under conditions of mild temperatures and high soil and air humidity. In general, primary infections caused by this fungus start due to the presence of free water and an exogenous energy source, usually se
Publicado em: 2009
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8. High school students argumentative writing backed up with empirical data obtained from experiments in biology. Masters degree education college / Escrita argumentativa de alunos do ensino médio alicerçada em dados obtidos em experimentos de biologia
At this research, we investigated how high school students write on an argumentative basis as they make use of empirical data provided by experiments in biology. Here we mean science as a cultural concept and, from a sociocultural perspective of the teaching-learning process, regard the teaching of science as a kind of enculturation. As far as this encultura
Publicado em: 2008
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9. Equipment cubic triaxial for rehearsals in saturated soils and no saturated with suction controlled matric / Equipamento triaxial cúbico para ensaios em solos saturados e não-saturados com sucção matricial controlada
In tropical countries, like Brazil, soils in non saturated condition are frequently encountered. Besides, the majority of geotechnical works load the ground according to stress paths in which the three principal stresses are different and vary independently. Therefore, the need to develop equipments able to test in the laboratory non saturated soil samples f
Publicado em: 2007
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10. Estabelecimento de um modelo de extração àcida de pectina de bagaço de maçã
words: pectin, apple Apple juice processing may produce around 20-40% of the raw material as a by-product known as pomace, which could be useful as natural source of many high value compounds. The objective of this work was to establish a procedure of acid extraction of pectin from such industrial by-product. Aplle pomace, obtained in laboratory scale, was d
Publicado em: 2006
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11. Selection of Trichoderma isolates for tomato seed treatment for protection against soilborne plant pathogens, storage fungi and plant growth promotion / Seleção de isolados de Trichoderma spp. para o tratamento de sementes de tomate visando a proteção contra patógenos de solo e de armazenamento e promoção de crescimento
Bioassays were conducted at Universidade Federal Rural do Rio de Janeiro, departamento de Fitotecnia to (i) determinate a simple and efficient preservation method of Trichoderma spp; (ii) evaluate the viability of essays in gerboxes with Trichoderma spp.; (iii) evaluate the potential of storaging seeds treated with Trichoderma isolates (iv) evaluate the surv
Publicado em: 2005
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12. Analise da fluidodinamica de leito de jorro durante o recobrimento de particulas
Among the several unit operations that seek the modification of superficial characteristics of solid partic1es, the spouted bed appears as a substitute for the fluidized bed, to process a great variety of coarse solid materiaIs. The use of this technique for the partic1e coating, initially employed in the pharmaceutical industry, is promising, which motivate
Publicado em: 2003