Capillary Absorption
Mostrando 25-36 de 56 artigos, teses e dissertações.
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25. ProduÃÃo de heterojunÃÃes de polianilina/silÃcio e nanofibras de polianilina para aplicaÃÃes em dispositivos hÃbridos
In this work we develop the methodology for the synthesis and fabrication of Polyaniline (PANI) â Silicon (Si) heterojunctions, with great potential for technological applications as sensors in different areas such as optics, ionizing radiation and gas detection. Besides, we were able to implement the electrospinnin technique with the goal of producing poly
Publicado em: 2006
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26. Pre-concentration by electrostacking and by cloud point for determination of metallic ions in environmental and biological samples / Pre-concentração por electrostacking e por ponto nuvem para determinação de arsenio e cadmio em amostras ambientais e biologicas
The propose of this work is to study two pre-concentration systems for the determination of metallic ions by flame atomic absorption spectrometry (FAAS) and electrothermal atomic absorption speetrometry (ETAAS). First, the use of the bi-directional electrostacking system (BDES) for the pre-concentration and speciation of As(V) and total As in water samples e
Publicado em: 2005
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27. Espectrofotometría de absorción atómica con tubo en la llama: aplicación en la determinación total de cadmio, plomo y zinc en aguas frescas, agua de mar y sedimentos marinos
Thermospray flame furnace Atomic Absorption Spectrometry (TS-FF-AAS) was used for the total determination of Cd, Pb and Zn in fresh water and seawater samples at µg L-1 levels, and in marine sediment samples at µg g-1 levels. Using a sample loop of 50 µL and a peristaltic pump the samples were transported into the metallic tube placed over an air/acetylen
Química Nova. Publicado em: 2004-12
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28. Uso da eletroforese capilar no estudo dos peptideos urinarios e sua possivel relação com a digestão proteica / Use of capillary electrophoresis in the study of urinary peptides and its possible relationship to digest protein.
This study aimed to test the applicability of the technique of high-performance capillary electrophoresis (HPCE) in the study dod poddiveis urinary peptides in autistic children and normal. Recent studies have shown that the (HPCE) is an alternative technique and / or complementary to other analytical techniques such as high performance liquid chromatography
Publicado em: 2001
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29. Determination of lead in capillary blood using a paper punched disc atomic absorption technique: Application to the supervision of lead workers
Cernik, A. A., and Sayers, M. H. P. (1971).Brit. J. industr. Med.,28, 392-398. Determination of lead in capillary blood using a paper punched disc atomic absorption technique. Application to the supervision of lead workers. The presence of lead in blood is the most incontrovertible evidence of absorption but hitherto the need for venepuncture has limited its
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30. Physiologic Studies of the Pulmonary Capillary Bed after Barium Sulfate Embolization*
22 anesthetized dogs were given a barium sulfate suspension intravenously in a dose sufficient to double mean pulmonary artery pressure. 10 sec breath-holding carbon monoxide diffusing capacity (DLCO10) was measured before and after this standard embolization in each dog. No post-embolic decrease in DLCO10 was observed. In the study of this apparent paradox,
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31. Bicarbonate absorption stimulates active calcium absorption in the rat proximal tubule.
To evaluate the effect of luminal bicarbonate on calcium reabsorption, rat proximal tubules were perfused in vivo. Perfusion solution contained mannitol to reduce water flux to zero. Total Ca concentration was measured by atomic absorption spectrometry, Ca ion concentration in the tubule lumen (CaL2+) and the peritubular capillary (CaP2+), and luminal pH (pH
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32. Nonradioactive monitoring of organic and inorganic solute transport into single Xenopus oocytes by capillary zone electrophoresis.
Transport of organic and inorganic solutes into and out of cells requires specialized transport proteins. Given a sufficiently sensitive analytical method for measuring cellular solute concentrations, it should be possible to monitor solute transport across the plasma membrane at the level of single cells. We report a capillary zone electrophoresis approach
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33. Evans blue dye-enhanced capillary-resolution photoacoustic microscopy in vivo
Complete and continuous imaging of microvascular networks is crucial for a wide variety of biomedical applications. Photoacoustic tomography can provide high resolution microvascular imaging using hemoglobin within red blood cells (RBCs) as an endogenic contrast agent. However, intermittent RBC flow in capillaries results in discontinuous and fragmentary cap
Society of Photo-Optical Instrumentation Engineers.
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34. The influence of blood pressure on trans-synovial flow in the rabbit.
Fluid exchange across the synovium lining the cavity of extended knees was studied in twenty rabbit hindquarters. The isolated hindquarters were perfused with blood from an extracorporeal pump-oxygenator system at controlled arterial pressure (PA) and venous pressure (PV). Intra-articular pressure (PJ) was set at 18 cmH2O in most experiments. The rate of tra
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35. Effects of increased and decreased tissue pressure on haemodynamic and capillary events in cat skeletal muscle.
1. The controversial problem concerning the unusual haemodynamics of the deranged circulation during increased hydrostatic tissue pressure (PT) was elucidated by detailed studies of arterial, capillary and venous functions in cat skeletal muscle exposed to graded experimental changes of PT over a wide range. 2. The results indicated that the impaired circula
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36. Effect of fluid pressure on the hydraulic conductance of interstitium and fenestrated endothelium in the rabbit knee.
A synovial cavity is separated from plasma by synovial intima in series with capillary endothelium. Because 20% of the intimal surface is bare interstitium, the system is a convenient model for the study of passive transport through serial endothelial and interstitial layers. Here hydraulic flow across the composite barrier was investigated in forty-seven kn