Modifications Membrane
Mostrando 13-24 de 302 artigos, teses e dissertações.
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13. Caracterização físico-química e ação antimicrobiana de nanopartículas de prata obtidas por uma nova síntese / Characterization and application of silver nanoparticles obtained by a new method
A síntese de nanopartículas de prata tem atraído interesse em virtude de novas e diferentes características físicas e químicas que possuem quando comparadas com as que compõem a fase macroscópica. Estas características permitem aplicações atrativas em vários campos, inclusive na área de alimentos. O trabalho teve como objetivos: 1) caracterizar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/07/2010
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14. Lack of evidence for regulation of cardiac P-type ATPases and MAP kinases in transgenic mice with cardiac-specific overexpression of constitutively active α1B-adrenoceptors
The regulatory function of α1B-adrenoceptors in mammalian heart homeostasis is controversial. The objective of the present study was to characterize the expression/activity of key proteins implicated in cardiac calcium handling (Na+/K+-ATPase and Ca2+-ATPases) and growth (ERK1/2, JNK1/2 and p38) in mice with cardiac-selective overexpression of constitutivel
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-05
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15. Sistemas de análises químicas em fluxo explorando mecanismos de re-alimentação, calibração multivariada e outras abordagens para melhoria em desempenho / Flow systems exploiting feed-back mechanisms, multivariate calibration and other strategies for improving the analytical performance
Studies focusing on performance of intelligent analytical flow systems, association with multivariate calibration or use of nanocrystals as sensitizers were carried out. Moreover, improvements related to modifications in flow pattern were evaluated with emphasis to in-line dialysis. To this end, a strategy for implementing simultaneous determinations of iron
Publicado em: 2010
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16. Effect of a high fat diet on mitochondria: bioenergetics, K+ transport and redox state / Efeito de dietas hiperlipídicas sobre mitocôndrias de fígado de camundongos: bioenergética, transporte de K+ e estudo redox
Obesity is associated with multiple dysfunctions including dyslipidemia, insulin resistance and diabetes. These malfunctions are associated with modifications in mitochondrial physiology. Furthermore, mitochondria are the most important site of energy metabolism and reactive oxygen species production. Alberici et al. (2006) demonstrated that hypertriglycerid
Publicado em: 2009
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17. Arquitetura de interfaces funcionais em argilas e adobes
Clay is a widely used and studied material in many scientific areas. It can be called mud and it also can be used in advanced applications such as the pharmaceutical industry composites, special adsorbents etc. Adobe is basically composed of clay and it retains some of its morphological characteristics and functions. It was possible in this work to develop s
Publicado em: 2008
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18. Polymeric coating and pharmacokinetic of chitosan granules containing ddI incorporated in microparticles / Revestimento polimerico e farmacocinetica de granulos gastrorresistentes contendo didanosina incorporada em microparticulas de quitosana
This work studied the production and pharmacokinetic of a new pharmaceutical formulation of the didanosine (ddI) drug ,composed by chitosan granules containing ddI incorporated in microparticles, for oral administration in the AIDS therapy. The advantages of this new pharmaceutical formulation compared to the conventional one are: to assure ddI stability in
Publicado em: 2008
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19. Analise da expressão de genes que codificam proteinas transportadoras em Acidithiobacillus ferrooxidans e Acidithiobacillus thioxidans na presença de sulfetos metalicos / Expression analyses of genes that encode for transporter protein in Acidithiobacillus ferrooxidans and Acidithiobacillus thioxidans maintained in contact with metal sulphiides
Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans are acidophilic, chemolitotrophic and mesophilic bacteria found in bioleaching environments. A. ferrooxidans uses ferrous iron and sulphur compounds as an e1ectron donor and A. thiooxidans uses on1y sulphur and sulphur compounds. Both species are aerobic using oxygen as final e1ectron acceptor.
Publicado em: 2008
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20. Efeito do 1,8-cineol sobre os parâmetros eletrofisiológicos das células nervosas do gânglio cervical superior de ratos / Effect of 1,8-cineol on electrophysiological parameters of nerve cells in the rat superior cervical ganglion
1,8-cineol is a terpene that constitutes many essential oils from medicinal folk plants. This compound presents many pharmacological activities as anti-inflammatory, antitumoral and gastroprotective. However it is difficult to find studies that relate the effects of both essential oils and its compounds in nervous system tissues. Since many of these oils and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/07/2007
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21. Estrutura e ultra-estrutura das glândulas salivares de Cimex hemipterus (Fabricius, 1803) (Hemiptera: Cimicidae) / Structure and ultrastructure of the salivary glands of Cimex hemipterus (Fabricius, 1803) (Hemiptera: Cimicidae)
Cimex hemipterus is a hematophagous insect that can be an experimental host of the Trypanosoma cruzi and may play a role as vector of Chagas disease. This work analyzed the structure of the salivary glands of C. hemipterus. Adults were dissected and the salivary glands were analyzed in light microscopy and transmission electron microscopy. The secretory port
Publicado em: 2007
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22. Estratégias para prospecção e predição de peptídeos bioativos
Chapters one and two deal with the isolation and identification of bioactive peptides from the skin secretion of Phyllomedusa hypochondrialis. The first chapter demonstrates the use of protemic techniques, mainly mass spectrometry, for the study of bradykinin related peptides (BRPs) present in the amphibians secretion and freshly dissected skin fragments. Ei
Publicado em: 2007
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23. Expressão de proteínas do vírus da dengue em células de inseto utilizando o sistema baculovírus de expressão
Dengue is the most common mosquito-borne viral disease of humans and its infection may evolve to a potentially lethal disease known as Dengue haemorrhagic fever (DHF). This disease is caused by a positive-sense, single-stranded, enveloped RNA virus that belongs to the genus Flavivirus within Flaviviridae and its genome is organized in a single ORF which enco
Publicado em: 2007
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24. Caracterização da expressão e função de receptores recombinantes do hormônio folículo-estimulante. / Characterization of expression and function of recombinant follicle-stimulating receptors.
The follicle stimulating hormone receptor (FSHR) is a member of a family of Gprotein-coupled receptors that has a large aminoterminal domain, rich in leucine repeats. The FSHR, together with the luteinizing hormone receptor, controls gonadal function in vertebrates. Mutations in the FSHR can alter its binding and signaling properties, and drastically affect
Publicado em: 2006