Variety Release
Mostrando 37-48 de 395 artigos, teses e dissertações.
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37. Study of aplication of Layered Double Hydroxides in removal and slow release of pesticides / Estudo da aplicação de hidróxidos duplos lamelares na remoção e liberação lenta de pesticidas
The extensive use of pesticides in modern agriculture has been contributing to an increase in environmental contamination. Layered Double Hydroxides (LDHs), or anionic clays, bear a layered structure, and a variety of anions can be intercalated between these layers through electrostatic interactions. These layered materials can be used in adsorption/sorption
Publicado em: 2006
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38. Morphological and molecular characterization of banana cultivars. / Caracterização morfológica e molecular de cultivares de Bananeira.
Banana genetic breeding at Embrapa Cassava and Tropical Fruits has carried out great efforts in trying to obtain banana cultivars resistant to most pests and diseases and with good agronomic characteristics, once most of the existing cultivars are tall in height and susceptible to most diseases. In this attempt, great financial and intellectual efforts are r
Publicado em: 2006
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39. AvaliaÃÃo da deficiÃncia do HormÃnio de crescimento: influÃncia do estado nutricional
Objective: The possibility of adequately diagnosing growth hormone (GH) deficiency in children and adolescents with excessive adiposity was the motivation for the present Masterâs dissertation, which is presented in the form of a review article and an original article, the aim of which was to evaluate the influence of overweight in responses to growth hormo
Publicado em: 2006
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40. Efeitos da alga Chlorella vulgaris sobre a resposta hematopoética e capacidade funcional de neutrófilos em ratos submetidos ao estresse agudo físico e psicogênico e infectados com Listeria monocytogenes / Effects of the algae Chlorella vulgaris on hematopoietic response and functional activity of neutrophils in rats submitted to physical and psychogenic acute stress and infected with Listeria monocytogenes
Evidence suggests that a variety of stressors can activate the hypothalamic control of the neuroendocrine and autonomic responses involved in the production´s control of blood cells and their release from bone marrow to circulation. The algae Chlorella vulgaris (CV) has several imunomodulatory activities, as the stimulation of hematopoietic cells and the ac
Publicado em: 2006
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41. The role of chemokines and chemokine receptors in eosinophil activation during inflammatory allergic reactions
Chemokines are important chemotactic cytokines that play a fundamental role in the trafficking of leukocytes to sites of inflammation. They are also potent cell-activating factors, inducing cytokine and histamine release and free radical production, a fact that makes them particularly important in the pathogenesis of allergic inflammation. The action of chem
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-11
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42. Nitric oxide regulates angiotensin-I converting enzyme under static conditions but not under shear stress
Mechanical forces including pressure and shear stress play an important role in vascular homeostasis via the control of the production and release of a variety of vasoactive factors. An increase in vascular shear stress is accompanied by nitric oxide (NO) release and NO synthase activation. Previously, we have demonstrated that shear stress induces angiotens
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-09
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43. Layer-induced elastic anisotropy Part 2: inversion of compound parameters to constituent parameters
In Part 1 of this paper (Helbig, 1998 - Rev. Bras. Geof. 16 (2-3):103-114) it was shown that a medium consisting of a periodic sequence of layers is, in the long-wavelength approximation, equivalent to a homogeneous compound medium with elastic parameters that are generalized averages of the constituents' sti
Revista Brasileira de Geofísica. Publicado em: 2000-08
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44. Cloning and Characterization of Potato Tuber Lipoxygenase cDNAs and Studies of Lipoxygenase Expression in Potato and Tomato Plants
Oxylipins are oxygenated fatty acids that are generated by plants in different contexts, and are often produced in plant tissues following imposition of external stresses such as insect wounding or pathogen infection. Injury and infection result in the release of the polyunsaturated fattty acid substrates and the enzymatic capacity for oxylipin synthesis. Th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 1997
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45. Nucleo multiprocessado para aplicações em tempo-real
This dissertation describes the real-time kernel for a Multiprocessor aimed at Control Systems Applications (MSC for short). The MSC multiprocessor was developed at Instituto de Automação, Centro Tecnológico para Informática. It has features that make it suitable for applications in industrial process control. These applications demand high throughput an
Publicado em: 1988
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46. Neutral protease activation of peritoneal macrophage prostaglandin synthesis.
We observed that the treatment of murine macrophages with proteolytic enzymes can activate the synthesis and release of arachidonic acid (ARA) metabolites. Murine peritoneal macrophage monolayers prelabeled with [14C]ARA were incubated with neutral proteases. Specific bacterial and mammalian proteases from various sources provoke the synthesis and release of
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47. Multiple calcium channels mediate neurotransmitter release from peripheral neurons.
We examined the effects of dihydropyridine drugs on evoked neurotransmitter release from cultured neonatal rat sensory and sympathetic neurons. Depolarization with K+-rich solutions increased the release of substance P from cultured sensory neurons. This release was enhanced by BAY K8644 and (+)-202791 and was blocked by a variety of other dihydropyridines i
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48. Ultrasound-enhanced polymer degradation and release of incorporated substances.
The effect of ultrasound on the degradation of polymers and the release rate of incorporated molecules within those polymers was examined. Up to 5-fold reversible increases in degradation rate and up to 20-fold reversible increases in release rate of incorporated molecules were observed with biodegradable polyanhydrides, polyglycolides, and polylactides. Up