3123736 documents found, page 8399 of 312374
Efeito do contato humano e da aprendizagem social intra-específica na imobilida...
Rocha, Alan Douglas de LimaThe domestication of some animal species, aiming to supply human demands took a few thousand years. This time was not sufficient to remove several defense mechanisms developed over millions of years. Thus, even living in a totally changed environment and often free of any predators, many species still preserve the essential behaviors and former defense mechanisms. These are essentially individual in all species...
Metodologia baseada em imagem digital, espectros UV-Vis e quimiometria para scr...
Souto, Urijatan Teixeira de Carvalho PolariThe quality of the coffee depends on several factors related to all stages of production, from the choice of species (or varieties) and from the transformations during the roasting to the preparation of the beverage. However, quality can be altered by the illicit practice of adulteration, which consists of contamination by husks and sticks and other adulterants to roasted and ground coffee. Thus, tampering caus...
Avaliação da atividade antimicrobiana dos extratos de Hamamelis virginiana L.
Serafim, Valeska FariasSeveral plants have antimicrobial effects, which may represent an alternative therapy for various infectious diseases. The objective was to evaluate the in vitro antibacterial activity of glycolic extracts of propolis and Hamamelis virginiana L. against strains patterns of Staphylococcus aureus (ATCC 25923) and Escherichia coli (ATCC 25922). The Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Co...
A diferença vai à escola: problematizando as articulações discursivas e epistem...
Sales, Romualdo da SilvaThe reflections presented in this text presents with the processes operationalized control and domination within the school, problematizing the relations of power established by them, having as point of reference the operative discourses on social markers of difference: race, gender and sexuality. In this way, I develop a study that problematizes the epistemological bases that underpin these systems of dominati...
Avaliação de um programa para inclusão de meninas em STEM na Paraíba - Brasil :...
Queiroz, Cecília Telma Alves Pontes deEsta tesis doctoral, desarrollada en régimen de cotutela entre la Universidad Federal de Paraíba (UFPB/Brasil) y la Universidad de Barcelona (UB/España), enfoca la problemática de la subrepresentación de las mujeres en STEM (Science, Technology, Engineering and Mathematics) en Brasil. Su objetivo fue el de evaluar la implementación y los resultados de 11 proyectos de inclusión de niñas en STEM, desarrollados en...
Óxido de Fe e Al no deslocamento vertical de P em neossolos regolíticos
Carneiro, Kalline de Almeida AlvesThe family farming areas of the municipalities of Esperança and Remigio, located in the Paraiba State Agreste, present as predominant soil the Regosol, with low availability of P and N, limiting crop productivity. To alleviate these nutrient deficiencies, organic fertilizers, especially cattle manure, are widely used by farmers. However, manure rates are applied empirically, often beyond necessary. Due to the e...
Obtenção de membrana cerâmica porosa a partir da utilização do resíduo de cauli...
Ferreira, Chrystiano AraujoSeveral efforts have been made in recent years in the development of ceramic membranes from low-cost raw materials. The reuse of kaolin waste is shown as an alternative to less environmental impact and economic interest. The treatment of this waste by hydrocyclone appears as an efficient alternative for its adequacy to the ceramic production cycle, being able to have applicability in the production of ceramic m...
Desenvolvimento de nanofibras eletrocatalíticas por Solution Blow Spinning para...
Silva, Vinícius DiasHydrogen (H2) as fuel has been considered as the most promising source of renewable energy to meet growing global demand. Among H2 production methods, water splitting can produce high purity H2 and in a sustainable way. This occurs through two half reactions, that is the Hydrogen Evolution Reaction (HER) and the Oxygen Evolution Reaction (OER). However, the OER is a slow reaction due to the various steps involv...
Avaliação hepática em maçarico-rasteirinho (Calidris pusilla, LINNAEUS, 1766) d...
Silva, Edijanio Galdino daMigratory birds suffer great physical and energy requirements, with the massive use of body energy reserves. Long distances can take migratory birds to dehydration and depletion of fat reserves. Furthermore, it is commonly observed decrease in weight of body, musculature, peritoneal fat and various organs. Some studies have found that liver and intestine also suffer from weight variation. Liver is an important ...
Modulação da expressão gênica caruncular pelo embrião bovino durante a placenta...
Silva, Kaetillyn Araújo Diniz daDespite the intense evolution reproductive biotech pregnancy failures still can not be avoided. The beginning of pregnancy is a critical period because it is associated with a higher number of failures in the development of pregnancy. In humans, this number varies between 15% and 19% spontaneus pregnancies. Failures in the implantation are still higher after IVF, reaching losses of 80-90% of human embryos. In c...