摘要:
An optical inspection device comprises a first set of rollers, wherein each roller comprises a wheel, and the wheels of the first set of rollers are spaced apart by a first distance in a first direction; a second set of rollers, wherein each roller comprises a wheel, and the wheels of the second set of rollers are spaced apart by the first distance in the first direction; a scanning unit disposed between the first set of rollers and the second set of rollers; and a first image sensor configured to capture optical lights in a first region, wherein the first region is on a side of the first set of rollers opposite the scanning unit.
摘要:
An apparatus for optical inspection comprises a platform extending in a first direction, a transmitting unit for transporting at least one carrier in the first direction from an input port to an output port thereof, each of the at least one carrier to support one of at least one object to be inspected, a first detector disposed above the platform and extending in a second direction orthogonal to the first direction for inspecting the at least one object on the at least one carrier, the first detector including a first scanner extending in the second direction between the input port and the output port, and a first roller set between the first scanner and the input port to apply force onto a surface of each of the at least one object.
摘要:
A bi-propellant rocket motor having controlled thermal management is disclosed. The rocket motor produces thrust using a solid or gel-phase primary propellant that can be either fuel- or oxidizer-rich, with a complementary self-pressurizing secondary propellant selected to balance the primary propellant in terms of the equivalence ratio. The motor houses multiple propellant grains arranged in such a configuration that each chamber containing a primary grain serves as both propellant storage and the main combustion chamber for that propellant grain as it burns with the secondary propellant. The secondary propellant is stored separately, and the flow routed past the primary propellant chamber to provide cooling for adjacent primary propellant chambers limiting the temperature rise in the motor structure.
摘要:
A high purity aqueous solution of hydroxylamine product is prepared by treating an aqueous solution of hydroxylammonium salt with a base like ammonia at low temperatures. A novel process can be carried out by separating the ammonium salt side product from hydroxylamine with a low temperature filtration and a resin-exchange process. The concentration of the hydroxylamine product is further improved by a safe distillation process that produces a high purity and high concentration hydroxylamine product with reduced risks of explosion.
摘要:
Disclosed are novel thickened organic fluid/surfactant compositions that are uniform, flowable and dispersible in water. Also disclosed are novel pesticidal compositions comprising a pesticide and the novel thickened organic fluid/surfactant composition.
摘要:
A floating-gate non-volatile memory (30) uses a relatively-low threshold voltage to define a programmed state. The memory (30) compensates for fast program cells by providing program pulses which increase in length and magnitude while the cells are being programmed. Between each program pulse the memory (30) determines whether selected cells have been adequately programmed. The memory (30) ceases applying the series of pulses to each cell when it has been adequately programmed. Thus the memory (30) avoids the over-program condition instead of compensating for it.
摘要:
A process for the skeletal isomerization of olefins wherein the olefins are contacted with a SKISO-11 alumina base catalyst to convert into isomerized products effectively under the conversion conditions comprising a temperature of above 200.degree. C. to about 650.degree. C., the pressure of 0.3 to about 10 atmospheres and a molar ratio of hydrogen or nitrogen to olefins feed from 0 to about 10.
摘要:
An EEPROM cell (10) has a tunnel opening (28) which overlaps both an active region (12) and field isolation regions (14). A tunnel area (30), which is that portion of the cell in which electrons tunnel through a tunnel dielectric (32) to charge or discharge a floating gate (22) during device operation, is defined as the overlapped portion of the tunnel opening (28) and the active region (12). By having the tunnel opening (28) larger than the tunnel area (30), etch processes used to pattern the opening in a gate dielectric (26) are more easily controlled and the active region area beneath the floating gate is reduced. The EEPROM cell (10) has a tunnel area which is limited in size by lithographic resolution capabilities rather than by limitations in dielectric etch processes. The tunnel features increase a capacitance coupling ratio of the cell.
摘要:
An EEPROM has an array of memory elements arranged by row and column which is accessed by a decoder capable of selecting all columns while enabling a single row in response to one input and selecting one column while enabling all rows in response to another input, thereby selectively erasing one entire row or column.
摘要:
A bioreactor chamber assembly including a bioreactor chamber and an outer chamber assembly is provided. In one design, the bioreactor chamber includes an upper grip assembly having a plurality of struts extending downward terminating in upper grips, each strut terminating in an upper grip, and a lower grip assembly containing one or more sample compartments and a lower grip. A sample can be formed in situ via injection into a sleeve contained within the sample compartment, where the sleeve encloses the upper and lower grips and enables a construct to form attached to these grips. In a second design, a split mold is received in the bioreactor chamber, the split mold having a cavity for receiving the upper and lower grips. Tissue explants and engineered constructs can be held within these grips. Medium level in the sample compartment is controlled, and different lengths of samples can be accommodated in the sample compartment. The height of the upper grip is adjustable by raising or lowering an extension rod that passes through a dynamic seal to the environment outside the chamber. The bioreactor chamber sample compartment includes a window to permit visualization of the sample as well as light-mediated transformation of biomaterials within the sample compartment. The samples held by grips within these chambers can be subject to uniaxial mechanical stimulation. Medium is perfused around the samples, and medium may be sampled via access ports.