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Displaying 576 - 600 of 617

Injectable Calcium Phosphate Cement: Effects of Powder-to-Liquid Ratio and Needle Size

July 16, 2007
Author(s)
Elena F. Burguera, Hockin D. Xu, Limin Sun
… force (mean sd; n = 4) significantly increased from (8 2) N using the 10-gauge needle to (144 17) N using the … needle, the mass percentage of paste extruded was (95 4) % at powder/liquid of 3; it decreased to (70 12) % at … cross-sectional area, A, for CPCD: F = 5.0 + 38.7 / A0.8. The flexural strength (mean sd; n = 5) increased from (5.3 …

Effects of Synergistic Reinforcement and Absorbable Fiber Strength on Hydroxyapatite Bone Cement

September 1, 2005
Author(s)
Yu Zhang, Hockin D. Xu
… d, cement flexural strengths (mean sd; n = 6) were: (2.7 0.8) MPa for CPC control; (11.2 1.0) MPa for CPC-chitosan; … (17.7 4.4) MPa for CPC-fiber composite; and (40.5 4.8) MPa for CPC-chitosan-fiber composite. They are significantly different from each other (Tukey s at 0.95).Compared to CPC control, the strength increase from …

Maternal Food and Beverage Behaviors and Discrepant Phthalate Exposure by Race

February 23, 2021
Author(s)
John Kucklick, Michael S. Bloom, Abby G. Wenzel, Rebecca J. Wineland, Elizabeth R. Unal, John W. Brock, Roger B. Newman, Erica Jamro, Kelly Garcia, Mary Sterrett
Widespread human phthalate exposure occurs from food and water, leached from polyvinyl chloride (PVC) plastics, food packaging, and skin absorption from personal care products. Multiple phthalates are known as antiandrogenic endocrine disruptors, raising

A Side-by-Side Energy Use Comparison of a Variable-Speed Small Duct High Velocity and Two-Stage Conventional Ducted Heat Pump in a Net-Zero Energy Home

July 6, 2020
Author(s)
William V. Payne, Brian P. Dougherty
… USA. The first heat pump was a two-stage, 7 kW (2 ton), 15.8 SEER, 9.05 HSPF conventionally ducted system, and the … heat pump was a variable-speed, 10.6 kW (3 ton), 14 SEER, 8.35 HSPF, high velocity ducted system. These two systems … its average heating COP went from 1.8±0.9 to 2.5±1.1 at a 95 % confidence level. The new firmware heating COP averaged …
Displaying 576 - 600 of 617
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