The use of low molecular weight heparins (LMWH) as an anticoagulant in the heparin-resistant patient poses challenges during cardiopulmonary bypass (CPB). The ultrafiltrability of LMWH has not been previously examined. The purpose of this study was to determine the effects of continuous ultrafiltration on the concentraton of a LMWH, enoxaparin. An in vitro analysis was performed using fresh who...

One of the aquatic ecosystems that are very susceptible to contamination is reservoir ecosystem. Reservoirs have different characteristics from other water bodies because they receive continuous input river flows through them. The contains organic and inorganic materials can cause pollution caused by various kinds human activities. pollutant currently getting more attention microplastics. Hence...

A computational study was performed to explore the aerodynamic performance of a streamline-traced, externalcompression inlet designed for Mach 1.664 at off-design conditions of freestream Mach number, angle-of-attack, and angle-of-sideslip. Serious degradation of the inlet performance occurred for negative angles-of-attack and angles-of-sideslip greater than 3 degrees. At low subsonic speeds, t...

Piano Key Weirs (PKWs) are an alternative to linear overflow structures, increasing the unit discharge for similar heads and spillway widths. Thus, they allow to operate reservoirs with elevated supply levels, thereby providing additional storage volume. As they are relatively novel structures, few design criteria are available. Hence, physical model tests of prototypes are required. This study...

The purpose of this study was to evaluate the utility of the Cobe SAT/HCT Monitor, an in-line device which continuously displays hematocrit and venous oxygen saturation. A fiber optic cable was used to connect the monitor to a "window" on the blood inlet of a venous reservoir (Cobe CML). Sixty venous blood samples were drawn from 20 patients undergoing cardiopulmonary bypass. Statistical corr...

Pulse tube refrigerators (PTRs) have made dramatic improvements in reliability, efficiency and usage. Inertance tube PTRs have been one of the keys to these improvements. The inertance tube is the component in the PTR that most easily affects the control of the PTR fluid dynamics. In one application in multistage cryocoolers, the performance of inertance tubes at the cryogenic temperatures is o...

A comprehensive experimental investigation has been conducted to determine the effective permeability of fluid saturated porous media consisting of small and large spherical particles. Small and large particles were mixed uniformly at a certain mixture ratio so as to form a vertical porous column. Water was drawn from a reservoir to flow through the vertical tube filled with particles of differ...

A microfluidic microarray that is created in the double spiral format has produced a greater density of probes than in our previous report. Using this double-spiral format together with centrifugal pumping for liquid delivery, 384 x 384 hybridization assays have been performed on one circular disk at one time, at the intersections between the spiral channels and spiral probe lines. Each sample ...

We consider the problem of water flow in a pipe of constant cross sectional area due to an elevation change between the pipe inlet and outlet. The flow is assumed to be steady and the pipe flows full at all cross sections. The application is the design of a single leg of a water distribution network that is fed by one reservoir (the “source”). There are many references for this type of design (...