Ion Injection
Mostrando 13-24 de 118 artigos, teses e dissertações.
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13. ESTUDO COMPARATIVO ENTRE EXTRAÇÃO SOXHLET E ULTRASOM PARA DETERMINAÇÃO DE HIDROCARBONETOS POLICÍCLICOS AROMÁTICOS EM SEDIMENTOS DO ESTUÁRIO DO RIO SERGIPE POR CROMATOGRAFIA A GÁS ACOPLADA A ESPECTROMETRIA DE MASSAS. / COMPARATIVE STUDY OF EXTRACTION SOXHLET AND ULTRASOUND DETERMINATION FOR OIL POLYCYCLIC AROMATIC SEDIMENTS SERGIPE RIVER ESTUARY BY GAS CHROMATOGRAPHY MASS SPECTROMETRY ATTACHED.
Polycyclic aromatic hydrocarbons (PAHs) are compounds that can be found in environmental compartments such as atmosphere, soil, sediment and water. Throughout bioaccumulation, they can also be incorporated into vegetables and animals tissues. They are mainly originated from anthropogenic sources such as fossil fuels and biomass burnings. Due they potential t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2011
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14. Propriedades optoeletrônicas de interfaces híbridas metal/semicondutor orgânico preparadas por deposição assistida por feixe de íons (IBAD) / Optoelectronic properties of interfaces hybrid metal / organic semiconductor prepared by ion beam assisted deposition (IBAD)
In this work, optoelectronic properties from organic light emitting devices (OLEDs), based on conjugated polymers with metallic cathode, which were deposited by ion beam assisted deposition technique (IBAD) were studied. The main objective of this work is to produce a hybrid non abrupt metal/polymer interface and to study its effects on electron injection. T
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/07/2011
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15. Biological characterization of a myotoxin phosphoplipase A2 homologue purified from the venom of the snake Bothrops moojeni
A myotoxin phospholipase A2 homologue, BmooMtx, was isolated from the venom of Bothrops moojeni by a combination of ion-exchange chromatography on DEAE-Sephacel column and gel filtration on Sephadex G-75. SDS-PAGE showed the enzyme to be a monomer with a molecular weight of 16,500. BmooMtx induced release of creatine kinase and morphological analyses indicat
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2011
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16. Estudos de plasmas em Tokamaks : medidas de temperatura iônica via espectroscopia no ultravioleta do vácuo, e deposição de potência por feixe de partículas neutras / Study of Tokamak plasmas : ion temperature measurements via vacuum ultraviolet spectroscopy, and power deposition by neutral beam injection
O desenvolvimento deste trabalho ocorreu em duas frentes distintas relacionadas à grande área de pesquisa: Fusão Termonuclear Controlada em dispositivos do tipo tokamak. A primeira fase abordou estudos de espectroscopia, tendo como principal motivação o aprimoramento dos métodos de medida e tratamento de dados na área de diagnósticos de plasmas quent
Publicado em: 2011
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17. Ressonadores de microdiscos com região ativa nanoestruturada bombeados por injeção eletrônica / Microdisk resonators with nanostructured active region pumped by electronic injection
This doctorate¿s thesis presents the growth of InAs quantum dots directly on high bandgap InGaAsP (?g=1420 nm) barriers to be used as the active region of microdisk resonators with emission in the C-band (1520¿1570 nm). Based on photoluminescence and atomic force microscopy experiments, the occurrence of inter-diffusion on the InAs/InGaAsP interface is cal
Publicado em: 2010
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18. Analytical method development for determination of codeine in human plasma by on-line SPE-HPLC-MS/MS / Desenvolvimento de metodologia analitica para determinação de codeina em plasma humano utilizando extração solido-liquido "on-line" acoplado ao HPLC-MS/MS
A specific LC-MS/MS method was developed and validated for automated determination of codeine in human plasma, using on-line solid-phase extraction (SPE) system coupled with positive ion electrospray ionization tandem mass spectrometry. Method allowed plasma direct injection onto cartridge without sample pre-treatment. Total analysis time per run was 3 min,
Publicado em: 2010
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19. Purification and functional characterization of a new non-hemorrhagic metalloprotease from Bothrops moojeni snake venom / Purificação e caracterização bioquímica da moozincina, uma metaloprotease dependente de zinco presente na peçonha da serpente Bothrops moojeni (Caiçaca)
Bothrops snake venoms contain proteases that contribute to the local effects seen after envenoming. In this study, a non-hemorrhagic metalloprotease was isolated from the venom of B. moojeni. The enzyme was isolated by a combination of ion exchange and gel filtration chromatographies and named Moozincin. The enzyme was purified to homogeneity as judged by it
Publicado em: 2010
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20. Adsorption of di-2-pyridylketone salicyloylhydrazone (DPKSH) on resin IRA 402: use in spectrophotometric determination of Cu(II) ions by FIA after separation and pre-concentration in solid phase / Adsorção da di-2-piridil cetona saliciloilhidrazona (DPKSH) em resina ira 402: aplicação na determinação espectrofotométrica de íons Cu(ii) por análise por injeção em fluxo (FIA) após separação e pré-concentração em fase sólida
Pre-concentration in solid phase provides advantages such as simplicity, automation easiness, improvement in detection limits, possibilities to combine it with Flow Injection Analysis (FIA), integration of reaction and retention phases, lower consumption of reagents and increase in selectivity. This process requires the development and characterization of ne
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/09/2009
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21. Monitoramento de componentes químicos da vinhaça aplicados em diferentes tipos de solo / Monitoring the fate and transport of vinasse chemical components applied to different soil types
Desde a época da colonização, a cana-de-açúcar apresenta-se como um dos principais produtos da agricultura brasileira e, além disso, trata-se de um tipo importante de biomassa energética, servindo como base para todo o agronegócio sucroalcooleiro, responsável por empregos diretos e indiretos em todo o Brasil. Do seu processo de industrialização s�
Publicado em: 2009
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22. Atividades antinociceptiva e antiinflamatÃria da lectina da alga marinha verde Caulerpa cupressoides (Vahl) C. Agardh var. lycopodium em animais / Antinociceptive and anti-inflammatory activities of the lectin from the green marine alga Caulerpa cupressoides (Vahl) C. Agardh var lycopodium (CcL) in animals.
The search of new alternative compounds in the control of the pain and inflammation, with minima collateral effects, it has been aroused from marine algae. The aim of this work was to investigate the potential antinociceptive and anti-inflammatory of the lectin from the green marine alga Caulerpa cupressoides (Vahl) C. Agardh var lycopodium (CcL) in animals.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/11/2008
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23. Otimização de Metodologia por Cromatografia Líquida em Fase Reversa por Pareamento Iônico para Análise Simultânea de Paracetamol, Cloridrato de Fenilefrina e Maleato de Carbinoxamina em Formulações Farmacêuticas
An alternative methodology by ion-pair reversed phase liquid chromatography for simultaneous analysis of acetaminophen and phenylephrine hydrochloride (association 1) and acetaminophen and carbinoxamine maleate (association 2) in tablets was proposed. Mobile phase consisting of 60% methanol and 40% potassium monobasic phosphate aqueous solution (62.46 mM) ad
Publicado em: 2008
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24. Effect of the Administration of the Potassium Phosphate in the Calcium Serum Concentration in Rats (in vivo) / Efeito da administraÃÃo do fosfato de potÃssio na concentraÃÃo sÃrica de cÃlcio em ratos (in vivo)
The evidences demonstrate that the inorganic phosphate increase is strongly associated with the weakness of the contractile mechanism, due to attractiveness with the ion calcium liberated by the sarcoplasmic reticulum and the formation of the calcium phosphate. Experimental studies related to the effect of the inorganic phosphate reacting with ion calcium, u
Publicado em: 2007