Quantification of the permeability of connective tissue linings isolated from implanted capsules was achieved by two types of experiments. The objective of the first type was to determine the restriction offered by the lining to diffusion of 125I-labeled human serum albumin. The restricted diffusion coefficient of albumin with respect to the connective tissue lining the luminal capsule surface ...

"Micelle-enhanced" polyelectrolyte capsules were fabricated via a layer-by-layer technique, templated on hybrid calcium carbonate particles with built-in polymeric micelles based on polystyrene-b-poly(acrylic acid). Due to the presence of a large number of negatively charged micelles inside the polyelectrolyte capsule, which were liberated from templates, the capsule wall was reconstructed and ...

Triplet sensitized photoisomerization of several stilbenes included within a water-soluble organic capsule has been investigated. In this study octa acid that self assembles in the presence of hydrophobic guest molecules to form a host-guest complex is utilized to solubilize hydrophobic stilbenes and triplet sensitizers in water, and to provide confinement during the geometric isomerization of ...

BACKGROUND/AIMS The ability to visualize the small bowel mucosa by capsule endoscopy is limited. Moreover, studies involving small-bowel preparation with purgative drugs have failed to establish which preparations produce better images and higher diagnostic yields. The aim of this study was to evaluate the efficacies and diagnostic yields of different bowel preparations. METHODS A cohort of 1...

We have met four technical difficulties when using the Crosby biopsy capsule (Crosby and Kugler, 1957): 1 difficulty in localizing the capsule in the alimentary tract; 2 occasional difficulty in withdrawing the capsule through the pylorus; 3 loss of the dome of the capsule in the intestine; 4 uncertainty as to whether the capsule has 'fired'. These difficulties have been overcome in the followi...

BACKGROUND AND PURPOSE Conventional MR imaging findings of human brain development are thought to result from decreasing water content, increasing macromolecular concentration, and myelination. We use diffusion-tensor MR imaging to test theoretical models that incorporate hypotheses regarding how these maturational processes influence water diffusion in developing gray and white matter. METHO...

Experiments were designed to examine the release of testosterone through polydimethylsiloxane (PDS) capsules in vitro and in situ and to test the efficacy of PDS capsules in maintaining testosterone in the peripheral circulation of castrate male rabbits for several months. The results demonstrate that (1) tritiated testosterone passed through PDS capsules suspended in water, (2) the tritiated m...

As the process before transporting of capsule in a hydraulic pipeline system, capsule’s threshold motion is often tested horizontal straight pipe. However, result physical test this work shows that wheeled more easily start-moves bent Thus, numerical simulation and theory analysis were used to study The results demonstrate velocity magnitude water flow was asymmetric between inner part outer se...

This study evaluates the occurrence of Cryptosporidium oocysts and Giardia cysts in reclaimed effluents if method 1623 with the Envirochek capsule filters (standard and high-volume [HV] filters) and a modified version of the Information Collection Rule method (ICR) with the polypropylene yarn-wound cartridge filter are used. The recovery efficiency of the analytical methods was evaluated with s...