Diffusional Sampling
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Desenvolvimento de métodos para coleta e determinação de poluentes em fase gasosa da atmosfera utilizando amostragem por difusão com membranas capilares microporosas / Development of methods for sampling and determination of gaseous pollutants in the atmosphere using diffusional microporous capillary membrane scrubber
A tese enfatiza o desenvolvimento e aplicação de amostradores difusionais para pré-concentração de traços de poluentes gasosos e sua conjugação com técnicas de separação e determinação, especialmente, a eletroforese capilar. Foram implementadas novas aplicações para um amostrador com múltiplos filamentos microporosos de polipropileno, previam
Publicado em: 2009
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2. How to Measure Drug Transport across the Blood-Brain Barrier
Summary: The extent to which a substance in the circulation gains access to the CNS needs to be determined for potential neuropharmaceuticals as well as for drug candidates with primary targets in the periphery. Characteristics of the in vivo methods, ranging from classical pharmacokinetic techniques (intravenous administration and tissue sampling) over brai
The American Society for Experimental NeuroTherapeutics.
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3. Measurement of the distribution of anion exchange function in normal human red cells.
1. The aim of the present work was to investigate cell-to-cell variation in anion exchange turnover in normal human red cells. Red cells permeabilized to protons and K+ dehydrate extremely rapidly by processes that are rate-limited by the induced K+ permeability or by anion exchange turnover. Conditions were designed to render dehydration rate-limited by ani
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4. Diffusible sodium, potassium, magnesium, calcium and phosphorus in frog skeletal muscle.
A microvolumetric analytical method has been developed to measure the endogenous concentrations of diffusible elements in muscle cells. Single twitch fibres from frog muscle were skinned under oil and 0.2 nl drops of isosmotic sucrose solution, held in the tips of specially constructed pipettes, were placed in contact with the skinned fibres. After 0-10 min,