Background: Angiogenesis, the development of new blood vessels, is an important process in tissue development and wound healing, but becomes pathologic when associated with solid tumor growth, proliferative retinopathies, and rheumatoid arthritis. Accurate and reliable qualification of neovascular (angiogenic) response, both in vitro and in vivo, is an essential requirement for the study of new...

We have carried out numerical modeling studies to investigate the development of discrete-fracture flow paths and flow-focusing phenomena in the unsaturated rock of the potential repository horizon at Yucca Mountain, Nevada. These studies are based on two- and three-dimensional (2-D and 3-D) numerical models using site-specific parameters. The 2-D and 3-D models use high-resolution spatial disc...

Interpenetrating composites are created by infiltration of liquid aluminum into three-dimensional (3-D) periodic Al2O3 preforms with simple tetragonal symmetry produced by direct-write assembly. Volume-averaged lattice strains in the Al2O3 phase of the composite are measured by synchrotron X-ray diffraction for various uniaxial compression stresses up to 350 MPa. Load transfer, found by diffrac...

With excess slurry pressures exerted on the tunnel face, particles tend to infiltrate into soil in front of tunnel. There will be pore pressure ahead case infiltration, leading an impairment supporting effect contributed by pressure. Corresponding three infiltration scenarios distinguished forms filter cake, different transfer models are employed describe distribution. Using kinematic approach ...

The farmland in Yinchuan is composed of sierozem soil, which characterized by high sand content and low organic matter content, resulting poor water-holding capacity weak soil structure. Humic acid a natural polymer amendment. It critical to study how humic affects water infiltration at the microlevel. A one-dimensional vertical experiment was conducted explore adding different amounts (0, 1%, ...