P Q Curves
Mostrando 13-24 de 37 artigos, teses e dissertações.
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13. A cryptosystem for elliptic curves over GF(2m) implemented in FPGAS / Um sistema criptografico para curvas elipticas sobre GF(2m) implementado em circuitos programaveis
Este trabalho propõe um sistema criptográfico para Criptografia baseada em Curvas Elípticas (ECC). ECC é usada alternativamente a outros sistemas criptográficos, como o algoritmo RSA (Rivest-Shamir-Adleman), por oferecer a menor chave e a maior segurança por bit. Ele realiza multiplicação de pontos (Q = kP) para curvas elípticas sobre corpos finitos
Publicado em: 2007
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14. Electroanalytical methodology was employed aiming to study the behaviour of the triazinic pesticides Atrazine and Ametrine in water and sediment collected from the Mogi-Guaçu river. / "Utilização de metodologia eletroanalítica para estudos de adsorção de pesticidas triazínicos em amostras de sedimentos do rio Mogi-Guaçu-SP"
An electroanalytical methodology was employed aiming to study the behaviour of the triazinic pesticides Atrazine and Ametrine in water and sediment collected from the Mogi-Guaçu River. The square wave voltammetry (SWV) and the hanging mercury drop electrode (HMDE) were employed. In a first step, the experimental (and voltammetric) parameters were optimized
Publicado em: 2006
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15. Variation in either the physical and mechanical properties and the quality of the bean (Phaseolus vulgaris L.) during the drying process and storage / Variação das propriedades físicas e mecânicas e da qualidade do feijão (Phaseolus vulgaris L.) durante a secagem e o armazenamento
There is a lack of information in the available literature on the changes that may occur in the bean during the drying process and storage time. Thus, the accomplishment of studies that would generate theoretical and practical information about a better conservation of the product are really relevant. So, this work was carried out to analyze several characte
Publicado em: 2006
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16. Antinociceptive potency of aminoglycoside antibiotics and magnesium chloride: a comparative study on models of phasic and incisional pain in rats
A close relationship exists between calcium concentration in the central nervous system and nociceptive processing. Aminoglycoside antibiotics and magnesium interact with N- and P/Q-type voltage-operated calcium channels. In the present study we compare the antinociceptive potency of intrathecal administration of aminoglycoside antibiotics and magnesium chlo
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-03
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17. Adsorção de tensoativos em resina trocadora de cations
A tensiometric detector based on surface tension measurement by the drop-weight method (TSDMG) was built and fitted in a standard liquid chromatograph (together with an UV photometric detector) to monitor surfactants in a liquid flow by dynamic surface tension (gd) measurements. The gd values obtained for aqueous solutions of polyethylene glycol mono [p-1,1,
Publicado em: 1995
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18. Monitoramento da fermentação da d-glicose pela Saccharomyces cerevisiae por microcalometria de fluxo
In this work a flow microcalorimeter was used to study in situ and in real time the fermentative process of d-glucose by Saccharomyces cerevisiae (FTPT 754). This work mark out the begining of a research area (biological microcalorimetry) in the I. Q. where a metabolic process was studied by pumping a defined medium plus microorganisms through a microcalorim
Publicado em: 1992
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19. Estrutura e estabilidade de complexos moleculares, na fase liquida, formados atraves de pontes de hidrogenio envolvendo alcoois fluorados
The study of molecular association through hidrogen bonding, using Infrared Spectroscopy, is usually done in the spectral region (4000 - 3000 cm ) of the (OH) ass. vibration. Our work consisted in a comparative study through Infrared spectra of the gaseous and liquid states of the following alcohols: 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP); 2,2,2-trifluoro
Publicado em: 1981
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20. Infarct size estimation from serial CK MB determinations: peak activity and predictability.
In 198 patients with acute myocardial infarction serial measurements of plasma creatine kinase isoenzyme MB (CK MB) were performed at four hour intervals. In every patient, maximal CK MB activity (peak activity) was compared with calculated total release per litre plasma. In 28 patients (group 1) sufficient plasma samples were available for calculation of th
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21. Relationship between photosynthetic electron transport and pH gradient across the thylakoid membrane in intact leaves.
Under conditions (0.2% CO2; 1% O2) that allow high rates of photosynthesis, chlorophyll fluorescence was measured simultaneously with carbon assimilation at various light intensities in spinach (Spinacia oleracea) leaves. Using a stoichiometry of 3 ATP/CO2 and the known relationship between ATP synthesis rate and driving force (Delta pH), we calculated the l
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22. Discharge characteristics and rapid resetting of autoactive aortic baroreceptors in rats.
1. An in vitro aortic arch-aortic nerve preparation was used to characterize the pressure-discharge properties of aortic 'autoactive' baroreceptors (aBRs), a functionally unique group of baroreceptors that discharge continuously below pressure threshold (Pth). These units contrast to more familiar 'quiescent' BRs (qBRs) that are silent below Pth. This study
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23. Serum bactericidal activity of ceftazidime: continuous infusion versus intermittent injections.
Since beta-lactam antibiotics have concentration-independent killing, bacterial eradication is a function of the time the serum drug concentration remains above the drug's MIC (T > MIC). We compared the serum bactericidal titers (SBTs) of ceftazidime given by continuous infusion (CI) or by intermittent bolus dosing (BD) against two clinical isolates each of
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24. Pharmacokinetics of Tobramycin in Adults with Cystic Fibrosis: Implications for Once-Daily Administration
Once-daily administration of aminoglycosides is routinely used in many institutions. However, comparative efficacy data for patients with cystic fibrosis (CF) are lacking. The purpose of the present study was to compare the predicted pharmacodynamic activity of tobramycin at 10 mg/kg of body weight/day administered every 24 h (q24h), q12h, and q8h. Pharmacok
American Society for Microbiology.