摘要:
A gas phase polymerization process comprising: (1) preparing a solution of a catalyst precursor comprising a mixture of magnesium and titanium compounds, an electron donor and a solvent; (2) adding a filler to the solution from step (1) to form a slurry; (3) spray drying the slurry from step (2) at a temperature of 100 to 140° C. to form a spray dried precursor, (4) slurring the spray dried precursor from step (3) in mineral oil, (5) partially or fully pre-activating the catalyst precursor by contacting the slurry of (4) with one or more Lewis Acids, and (6) transferring the partially or fully activated precursor from step (5) into a gas phase reactor in which an olefin polymerization reaction is in progress.
摘要:
A semiconductor device has trenches for defining active regions. After a thin diffusion barrier is deposited in the trenches, some of the trenches are selectively etched to leave different areas in the trench. One of the areas has the diffusion barrier completely removed so that the underlying layer is exposed. Another area has the diffusion barrier remaining. An oxidation step follows so that oxidation occurs at a corner where the diffusion barrier was removed whereas the oxidation is blocked by the diffusion barrier, which functions as a barrier to oxygen. The corners for oxidation are those in which compressive stress is desirable, such as along a portion of the border of a P channel transistor. The corners where the diffusion barrier is left are those in which a compressive stress is undesirable such as the border of an N channel transistor.
摘要:
The present invention provides a method of wireless telecommunication in a distributed network comprised of a plurality of access points. The method includes receiving information indicating that a dormant call session is to be activated. The method also includes providing an identifier indicative of the dormant call session. The identifier includes information indicative of an access point having information indicative of a state of the call session stored thereon.
摘要:
A method for forming a portion of a semiconductor device structure comprises providing a semiconductor-on-insulator substrate having a semiconductor active layer, an insulation layer, and a semiconductor substrate. A first isolation trench is formed within the semiconductor active layer and a stressor material is deposited on a bottom of the first trench, wherein the stressor material includes a dual-use film. A second isolation trench is formed within the semiconductor active layer, wherein the second isolation trench is absent of the stressor material on a bottom of the second trench. The presence and absence of stressor material in the first and second isolation trenches, respectively, provides differential stress: (i) on one or more of N-type or P-type devices of the semiconductor device structure, (ii) for one or more of width direction or channel direction orientations, and (iii) to customize stress benefits of one or more of a or semiconductor-on-insulator substrate.
摘要:
A transfer apparatus includes a shuttle depending from an overhead support with a pair of arms for receiving and shifting a specimen carrier from one conveyor to a second conveyor of a dual-conveyor track. The shuttle is operable to retain a specimen carrier along either the first or second conveyor and to release a specimen carrier along either the first or second conveyor. Sensors are located to detect the presence of a specimen carrier at each of the retention locations, and to confirm the release of a specimen carrier from the shuttle along each of the conveyors. A drive motor for moving the shuttle between the retention and release positions is electrically connected to a command module with a processor, for receiving instructions as to the position of the shuttle. The sensors are also connected to the processor to transmit detection data to the processor. A queue is positioned upstream of the shuttle and is electrically connected to the processor. The queue includes retractable shafts, sensors and scanners for selectively retaining, detecting and scanning identification data from a specimen carrier on either conveyor upstream of the shuttle, and transmitting the information to the processor.
摘要:
A packaging system for a component is disclosed. The packaging system comprises a box and a compressible and shock-absorbent packing insert. The packing insert is placed in the box after nesting a component within the insert. The insert comprises a main panel, a first end tube hingedly coupled to the main panel, a second end tube hingedly coupled to the main panel opposite the first end tube, a first side tube hingedly coupled to the main panel, the first side tube being adjacent to the first end tube and a second side tube hingedly coupled to the main panel, the second side tube being adjacent to the second end tube and opposite the first side tube wherein the first and second side tube panels and the first and second side tube panels may include at one or more cutouts to enhance the flexing capability of the packing insert. Accordingly, the packing insert in accordance with the present invention employs low cost, environment friendly material to protect fragile components from any potential damage that can be caused during the shipping process.
摘要:
This invention relates to a compound of Formula I (I) and its use in treating hyper-proliferative disorders and diseases associated with angiogenesis.
摘要:
A process for forming an isolation trench in a wafer. The process includes depositing (e.g. by a directional deposition process) a first dielectric material in the trench and then depositing a second dielectric material (e.g. by a directional deposition process) over the first dielectric material in the trench. A third material is deposited in the trench on the second layer. The second material and the third material are selectively etchable with respect to each other. In one example, the first material has a lower dielectric constant than the second material.
摘要:
A switched reluctance drive, operating either as a motor or a generator, is controlled in a stable manner in the continuous current mode in the presence of supply voltage or electrical load variation. The use of a current control parameter Ix in addition to the conventional on- and off-angles θon, θoff gives the ability to operate smoothly in the continuous current mode and to transition smoothly between operating modes. Once the phase current reaches a pre-determined level Ix, the phase winding may be placed in a freewheel state, thereby controlling the standing current in the phase winding and/or the output voltage.
摘要:
A drive arrangement for driving a rotary component of a fuel pump comprises a resilient member associated with either a drive shaft or the rotary component and engageable with a surface associated with the other of the drive shaft and rotary component. In use, where a braking force greater than a predetermined level is applied to the rotary component, the member rides out of engagement with the surface permitting relative rotary motion of the drive shaft and rotary component.