Abstract: A pressure relief valve assembly includes a body having a passage extending therethrough. The body includes an upstream end adapted to be connected to a source of fluid pressure, an intermediate portion, and a downstream end having a downstream exit. A rupture disk is mounted in the passageway and blocks the fluid pressure of the source from the downstream end. In operation, the rupture disk configured to rupture above a predetermined differential fluid pressure. A catcher is disposed in the passage downstream of the rupture disk. The catcher generally includes a disk portion with at least one opening sized to prevent passage of the rupture disk through the catcher in response to a rupture disk failure while simultaneously allowing fluid flow through the catcher to the downstream exit.

Abstract: Methods of modifying nanoparticle surfaces using solid phase synthesis, methods of releasing nanoparticles from solid phase synthesis supports using photolytic cleavage, and methods of assembling nanoparticle structures are disclosed. Nanoparticles comprising a positionally distinguishable surface area comprising a ligand are also disclosed.

Abstract: An ironing board cover is foldable into an interfitting relationship with an appropriate ironing board. The covering includes an associated pad whereupon positioning over an ironing board yields a smooth and continuous ironing surface. The pad is securable by means of a plurality of transverse belts securable by means of Velcro.RTM.-type fasteners. The various corner portions of the ironing board pad may optionally also be securable by Velcro.RTM. connectors. Gradation lines are formed on both longitudinal side portions of the ironing board cover and at end portions thereof for indication of dimensions which may be accommodated by the ironing board cover of the instant invention.