The mechanism is analogous to instabilities of detonation waves and also produces a cellular structure commonly observed in gaseous detonations. We suggest that detailed simulations of such unsteady selleck chemical phenomena can yield further information for the validation of nonequilibrium kinetics. [doi:10.1063/1.3585694]“
“PURPOSE To evaluate the protective effect of different ophthalmic
viscosurgical devices on corneal endothelial cells during phacoemulsification in a rabbit model
SETTING Harlan Biotech Israel and Ophthalmology Department, Kaplan Medical Center, Rehovot, Israel
DESIGN Experimental study
METHODS Rabbit eyes were randomly assigned to 3 equally sized groups Endothelial cell counts were performed in all eyes before initiation of the study The aqueous humor was completely replaced by Biolon (sodium hyaluronate 1 0%) in Group A, by a combination of Viscoat (sodium chondroitin sulfate 4 0% sodium hyaluronate 3 0%) and Provisc (sodium chondroitin sulfate 1 0%) using the soft-shell technique in Group B, and by a combination of Visiol (sodium hyaluronate 2 0% mannitol 0 5%) and Biolon Entinostat using the soft-shell
technique in Group C The eyes were exposed to alternating 10 seconds of phacoemulsification and a 10-second pause until a total exposure time of 2 5 minutes elapsed Endothelial cell counts were repeated 3 days after surgery
RESULTS The study used 18 rabbit eyes 6 in each group Group A had the highest endothelial cell loss (13%) followed by Group B (7%), and Group C (4%) The difference in cell loss between Group C and Group A was statistically significant (P
= 037)
CONCLUSION The study showed the efficiency and advantages of the soft-shell technique using the combination of Visiol and Biolon over Biolon alone”
“We report on the unusual nanoscale kinetics of the layer-by-layer deposition of complex oxide heterostructures composed of a unit-cell thick correlated metal LaNiO(3) and dielectric LaAlO(3). The ultrathin multilayers demonstrate extremely good IACS-10759 price crystallinity and surface morphology maintained over the large number of layers, as confirmed by combination of AFM, RHEED, and synchrotron x-ray diffraction. To elucidate the physics behind the growth, the temperature of the substrate and the deposition rate are varied over a wide range and the results are treated in the framework of a two-layer model. The results demonstrate that, in addition to temperature and vapor supersaturation, modulated flux can be employed as a powerful kinetic handle for the fine-tuned manipulation of sub-monolayer growth regimes of multicomponent materials. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3590146]“
“Osteoporosis is a heritable disease characterized mainly by low bone mineral density (BMD) and/or osteoporotic fractures (OF).
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