In this paper, a comprehensive approach to numerical and experimental analysis of microchamber filling in centrifugal microfluidics is presented. In the development of micro total analysis systems, it is often necessary to achieve complete, uniform filling of relatively large microchambers, such as those needed for nucleic acid amplification or detection. With centrifugal devices, these large m...

I Silver impregnation of the monkey's retina has been employed to study the presence and distribution of centrifugal fibers in flat mounts. This method has allowed identification of individual centrifugal fibers which appear to emerge from the optic papilla. Their course and distribution within the retina has been depicted. In the vicinity of the papilla, where the stained fibers in the optic n...

A low-speed centrifuge was used to study the tropic responses of Phycomyces sporangiophores in darkness to the stimulus of combined gravitational and centrifugal forces. If this stimulus is constant the response is a relatively slow tropic reaction, which persists for up to 12 hours. The response is accelerated by increasing the magnitude of the gravitational-centrifugal force. A wholly differe...

The centrifugal fibers in the pigeon retina end in the inner nuclear layer and form two kinds of terminals, convergent and divergent. In the inner nuclear layer the fibers synapse with amnacrine and displaced ganglion cells. Because of their great number and their even distribution these fibers appear to constitute a system for the localized centrifugal control of the retinal functions.

336 CLINICAL CHEMISTRY, Vol. 30, No. 2, 1984 acidi4-aminophena.zone chromogenic system in direct enzymatic assay of uric acid in serum and urine. Clin Chem 26, 227-231 (19801. 2. Price CP, Spencer K. Multiple wavelength spectrophotometry and the centrifugal analyser. In Centrifugal Analysers in Clinical Chemistry, CP Price, K Spencer, Eds., Praeger Publishers, New York, NY, 1980, pp 213-229.

This study was performed to assess if the kind of pump used for CPB (roller vs. centrifugal) can influence neurological outcomes of adult cardiac surgery patients. Between 1994 and 1998, 3438 patients underwent coronary and/or valve surgery at our hospital; of these, 1805 (52.5%) underwent surgery with the use of a centrifugal pump, and 1633 (47.5%) were operated with a roller pump. The effect ...

OBJECTIVES Reduction of cognitive function is a possible side effect after coronary artery surgery using cardiopulmonary bypass (CPB). We investigated the effect of roller versus centrifugal pumps for CPB on cognitive performance in patients undergoing coronary artery bypass grafting (CABG). METHODS 50 consecutive CABG patients operated with centrifugal pump were compared to 50 roller pump pa...

Centrifugal microfluidic or lab-on-a-disc platforms have many advantages over other microfluidic systems. These advantages include a minimal amount of instrumentation, the efficient removal of any disturbing bubbles or residual volumes, and inherently available density-based sample transportation and separation. Centrifugal microfluidic devices applied to biomedical analysis and point-of-care d...