Data obtained from modified cone penetrometer experiments were used to estimate the hysteretic soil hydraulic properties with a parameter estimation technique which combined a numerical solution of the Richards equation with Marquardt-Levenberg optimization. The modified cone penetrometer was designed to inject water into a soil through a cylindrical screen, measure the infiltration rate with t...

Control of water and air in the root zone of plants remains a challenge in the microgravity environment of space. Due to limited flight opportunities, research aimed at resolving microgravity porous media fluid dynamics must often be conducted on Earth. The NASA KC-135 reduced gravity flight program offers an opportunity for Earth-based researchers to study physical processes in a variable grav...

Surfactants are often used to improve the solubility of a compound for dissolution studies in aqueous media. Having observed non-linear enhancement with increasing surfactant concentration, this study investigated effect poorly soluble, zwitterionic, moderately lipophilic drug, Compound A, on critical micelle concentration (CMC)of sodium lauryl sulfate (SLS) phosphate buffer. A force tensiomete...

This paper reports the results of a study concerned with use electroadhesion for investigation attraction force (weight 50 g/m2). For this purpose, measuring system was developed and built. Next, dedicated electroadhesive pad coated copper mesh on other side designed. A new supply control algorithm also charger built purpose study. The measurements were carried out tensiometer to measure which ...

Esophagogastric anastomotic leaks complicate 5% to 20% of esophagectomies for esophageal cancer. Keratinocyte growth factor-2 (KGF-2) is a newly identified growth factor that accelerates skin incisional healing. An animal experiment was done to test the hypothesis that KGF-2 would enhance esophagogastric anastomotic wound healing. Forty rats had single-layer esophagogastric anastomoses construc...

Unsaturated constant water content triaxial compression tests with suction measurement, using an Imperial College tensiometer, and saturated consolidated undrained were conducted on reconstituted brickearth, a naturally unsaturated clayey silt from London. The results show that the effective stress can be applied to critical state line (CSL) normalized stiffness for brickearth but Bishop's vari...