Due to the difficulty of performing uniaxial tensile testing, the strengths of graphene and its grain boundaries have been measured in experiments by nanoindentation testing. From a series of molecular dynamics simulations, we find that the strength measured in uniaxial simulation and the strength estimated from the nanoindentation fracture force can differ significantly. Fracture in tensile lo...

blackleg in cattle has been recognized since 1938 in iran that mostly affects cattle in enzootic farm. main object of this study was to prepare and formulate a concentrated potent vaccine for immunization of cattle against blackleg in iran. experimental concentrated blackleg vaccine was prepared according to the method described by fao. the medium (modified medium for production of experimental...

A gel protein capillary extraction apparatus is developed and demonstrated for its rapid and effective transfer of SDS-protein complexes from polyacrylamide gel to a fused-silica capillary. The small dimensions of capillary columns permit the application of high voltages for achieving rapid and effective transfer of gel proteins. Furthermore, the fused-silica capillaries are internally coated w...

A commercially available Argonaut VacMaster-96 plate-to-plate solid-phase extraction (SPE) station equipped with 24 FluoroFlash cartridges is employed for parallel purification of fluorous reaction mixtures. Each cartridge charged with 3 g of fluorous silica gel has the capability to produce up to 100 mg of purified small molecules. The 24-well receiving plate has a standard footprint that can ...

Theory suggests that the effects of disadvantaged neighborhoods on child educational outcomes may depend on a family’s economic resources as well as the timing of neighborhood exposures during the course of child development. However, most previous research assumes that disadvantaged neighborhoods have the same effects on all children regardless of their family resources, and few prior studies ...

Theory suggests that neighborhood effects depend not only on where individuals live today, but also on where they lived in the past. Previous research, however, usually measures neighborhood context only once and does not account for length of residence, thereby understating the detrimental effects of long-term neighborhood disadvantage. This study investigates effects of duration of exposure t...

Deftection of oriented ftakeboards, random ftakeboards, and southern pine plywood was evaluated for small size bending specimens and concentrated loads applied to panels nailed on framing lumber. The ftakeboards con~ed a mixture of southern hardwoods and pine; the plywood was 3-ply l/2-inch and 4-ply ~-inch construction. Tests of both panel ~ons, all load levels and RH cycles showed plywood ben...