We required a disposable dialysis chamber of approximately 100 μL internal volume to fit within a small reaction vial. Since our application demanded the highest possible rate of diffusion into and out of the chamber, the surface area-to-volume ratio had to be as high as was practical. Injectable dialysis chambers are commercially available, e.g., the Slide-A-Lyzer® Cassette (Pierce, Rockford,...

The initial fixation strengths of two spiked-washer designs were evaluated using human femurs and fascia lata tissue. Fascia lata was attached to the femur using the fixation devices, and then each femur-washer-fascia lata complex was loaded in tension to failure. Load-elongation curves were recorded, the initial failure load, initial failure displacement, stiffness, ultimate load, and ultimate...

This research was conducted to evaluate abrasion resistance of high-volume fly ash concrete. A reference plain portland cement concrete was proportioned to obtain 28day strength of 41 MPa. Concrete mixtures were also proportioned to have two levels of cement replacements (50 and 70%) with an ASTM Class C fly ash. Abrasion tests were carried out using the rotating cutter method as per ASTM C-944...

Egg breaking wastes were treated with 1W200 mg./l. chitosan, a by-product /derived from shrimp and crab shells, and 2-20 mg./l. Betz 1130. Suspended solids in the .I wastewater were reduced by 70-90% and the COD by 55-75%. The yield of dry coagulated solids from wastes collected during cleanup was approximately 12 lb./IOKl gal., and from the concentrated wastes in the egg washers, the yield was...

A new peridynamic (PD) model for crevice corrosion damage is introduced and cross-validated with experimental results from the literature. Electrochemical mechanisms are reduced to a simple metal-ion concentration-dependent rate. Computations over domains extreme aspect ratios like those seen in crevices efficiently performed by modifying PD formulation accommodate arbitrary-shape horizons. The...

Increased efficiency of production and improved quality have contributed to the development ultrasonic technological applications, in which low frequency ultrasounds are generated operate, accelerate as well facilitate processes. Technological devices (i.e. sources noise work environment, e.g. washers, welding machines) relatively high power their nominal frequencies range from 18 kHz 40 kHz. I...

Excessively high temperatures inside a power transformer can accelerate the ageing rate and even cause unplanned outages. Accurately estimating hot-spot temperature (HST) of is important for regulating load ensuring long-term operation. In this study, closed-loop model 110-kV product with an oil natural/air forced (ONAF) cooling mode built to predict HST, in which compression ratio windings, eq...

When carbon-fiber-reinforced plastic (CFRP) and steel are joined using blind riveting bolting, fastener inclination occurs due to the clearance between hole. To this end, study investigated unavoidable occurrence of when joining metal composite materials mechanical fastening. The effect on lap shear strength (LSS) was quantitatively under various conditions. In riveting, breakage occurred mainl...