摘要:
An adjustable pilot—actuated valve (230) is provided. The adjustable pilot—actuated valve (230) comprises a housing (331) forming a valve chamber (332), a first piston chamber (338), and a second piston chamber (340). The adjustable pilot—actuated valve (230) further includes a valve spool (333) movable within the valve chamber (332). A first piston (334) is movable within the first piston chamber (338) and includes a first side (334a) and a second side (334b) with the second side (334b) coupled to the valve spool (333). A second piston (335) is movable within the second piston chamber (340) and includes a first side (335a) and a second side (335b) with the second side (335b) coupled to the valve spool (333). The adjustable pilot—actuated valve (230) further includes a first pilot port (234) formed in the housing (331) to receive a first pilot pressure and is in fluid communication with the first side (334a) of the first piston (334) and a second pilot port (235) formed in the housing (331) to receive a second pilot pressure and is in fluid communication with the first side (335a) of the second piston (335). A bias port (236) is formed in the housing (333) to receive a bias pressure and is in fluid communication with the second side (334b) of the first piston (334).
摘要:
An apparatus for testing failure of a material used in a jet engine, and more particularly to an apparatus that uses one or more model jet engine components made from a material used in a full-size jet engine and desired to be tested. The apparatus permits easy removal and disassembly of a jet engine mounted thereon as well as real-time measurements of run-time parameters. The methods and apparatus provide for predicting and analysing failure by a number of fatigue-related mechanisms including creep, fatigue, crack growth, foreign object damage, fretting, erosion, and stress corrosion.
摘要:
A scoring system for a ball activity area is provided. The ball activity area includes a plurality of activity stations, each of which has one or more hoops or tubes through which balls can be thrown. The hoops and tubes are provided with sensors which determine when a ball passes through the hoop or tube, or contacts the hoop. The sensors are in communication with a controller which receives the signals from the sensors. When the controller receives a signal from a sensor, it adds a predetermined number points to a counter, and displays the point total on a score board. The points awarded for different activity stations can be varied depending on the difficulty of passing a ball through the hoop or tube in an activity station.
摘要:
An apparatus for testing failure of a material used in a jet engine, and more particularly to an apparatus that uses one or more model jet engine components made from a material used in a full-size jet engine and desired to be tested. The apparatus permits easy removal and disassembly of a jet engine mounted thereon as well as real-time measurements of run-time parameters. The methods and apparatus provide for predicting and analysing failure by a number of fatigue-related mechanisms including creep, fatigue, crack growth, foreign object damage, fretting, erosion, and stress corrosion.
摘要:
A clay-pulp mixture is prepared by blending a predetermined ratio of clay and wood pulp derived from alpha virgin cellulose in dry form, moistening the mixture homogeneously by adding water and continuing to blend until a malleable consistency is achieved. Air is extracted from the moist mixture, and solid blocks formed for storage and delivery to end-users.
摘要:
A clay-pulp mixture is prepared by blending a predetermined ratio of clay and wood pulp (specifically, fiber derived from virgin alpha cellulose) in dry form, moistening the mixture homogeneously by adding water and continuing to blend until a malleable consistency is achieved. Air is extracted from the moist mixture, and solid blocks formed for storage and delivery to end-users.
摘要:
An apparatus for testing failure of a material used in a jet engine, and more particularly to an apparatus that uses one or more miniature jet engine components made from a material used in a full-size jet engine and desired to be tested. The apparatus permits easy removal and disassembly of a jet engine mounted thereon as well as real-time measurements of run-time parameters. The methods and apparatus provide for predicting and analyzing failure by a number of fatigue-related mechanisms including creep, fatigue, crack growth, foreign object damage, fretting, erosion, and stress corrosion. The apparatus also permits testing of a component placed in the exhaust gases of a jet engine mounted therein.
摘要:
Assays, e.g., homogenous assays, and methods for identifying, quantifying and/or monitoring the formation and/or stability of a multimeric complex, e.g., a ternary complex are disclosed. The methods and assays of the invention can be used to identify and/or evaluate agents (e.g., proteins, peptides, antibody molecules, and small and large molecules) that interfere with and/or inhibit the formation of a multimeric complex (e.g., a ternary complex) or that disrupt a previously formed complex.