摘要:
The invention concerns novel hybrid pesticidal toxins. These toxins are expressed as the fusion protein of a chimeric gene. Specifically exemplified is a novel B.t. hybrid toxin. These novel toxins have increased toxicity against target pests. The invention also concerns a process for preparing a hybrid virus having an altered insect host range.
摘要:
The present invention relates generally to a new scheme of providing a seal band for semi-conductor substrates and chip carriers. More particularly, the invention encompasses a structure and a method that uses a multi-layer metallic seal to provide protection to chips on a chip carrier. This multi-layer metal seal provides both enhanced hermeticity lifetime and environmental protection. For the preferred embodiment the multi-layer metallic seal band is a three layer, solder sandwich structure which is used to create a low cost, high reliability, hermetic seal for the module. This solder sandwich has a high melting temperature thick solder inner core, and lower melting point thin interconnecting solder layers, where the thin interconnecting solder layers may have similar or different melting points.
摘要:
The present invention relates generally to a new apparatus and method for customized cooling of chips using a plurality of thermally conductive materials. More particularly, the invention encompasses an apparatus and a method that provides customized cooling of a MCM (Multi-Chip Module) by using a plurality of thermally conductive materials.
摘要:
Novel biological pesticides are prepared by introducing into a microorganism the genetic capability to produce a heterologous pesticide, wherein the microorganism is capable of proliferating in the rhizosphere or phylloplane in competition with wild-type microorganisms. A gene capable of expressing a polypeptide is introduced into the microorganism under conditions which allow for stable maintenance and expression of the gene, without significantly diminishing the ability of the microorganism to compete in the environment. Preferred microorganisms provide for the maintenance and protection from degradation of the polypeptide pesticide.
摘要:
The invention concerns novel isolates of Bacillus thuringiensis (B.t.) which contain a toxin(s) which is active against adult nematode worms and larvae. this B.t. toxin(s) can be used to treat animals and plants hosting susceptible nematodes.
摘要:
A multi-chip electronic module includes a circuit board having a first end portion, a second end portion, a first surface portion and an opposing second surface portion. A plurality of electronic components is mounted to the first surface portion of the circuit board. A heat spreader member is supported at the first surface portion of the circuit board. The heat spreader includes a body having a first end, a second end, a first surface and a second surface. The first end portion and first end define a fluid inlet, and the second end portion and second end define a fluid outlet. The second surface is in thermal contact with the plurality of electronic components. The heat spreader member and circuit board define an enclosed fluid duct having a plurality of substantially parallel flow paths.
摘要:
A system to improve an in-line memory module may include an edging carried by the in-line memory module to stiffen, support, protect, and/or aid in handling the in-line memory module. The system may also include guide ribs carried by the edging to facilitate positioning of the in-line memory module during installation. In one embodiment, the system includes a heat spreader to aid in cooling a plurality of heat sources carried by the in-line memory module. The system may further include a compliant member to regulate the heat spreader's positioning relative to the plurality of heat sources.
摘要:
The present invention provides a method for controlling power change for a semiconductor module. Specifically, under the present invention power is applied to, or removed from a semiconductor module between a lower power state such as a zero power, nap or sleep state and a full power state over a predetermined time period. This allows the rate of movement and strain rate of the thermal interface material within the semiconductor module to be controlled, thus preserving the reliability of the material. Typically, the power is changed over time between the lower power state and the full power state in a linear fashion or incrementally.
摘要:
A semiconductor module structure and a method of forming the semiconductor module structure are disclosed. The structure incorporates a die mounted on a substrate and covered by a lid. A thermal compound is disposed within a thermal gap between the die and the lid. A barrier around the periphery of the die extends between the lid and the substrate, contains the thermal compound, and flexes in response to expansion and contraction of both the substrate and the lid during cycling of the semiconductor module. More particularly, either the barrier is formed of a flexible material or has a flexible connection to the substrate and/or to the lid. The barrier effectively contains the thermal compound between the die and the lid and, thereby, provides acceptable and controlled coverage of the thermal compound over the die for heat removal.
摘要:
A cooling system for an electronic component on a component carrier is provided. The system includes a frame, a spray manifold, and a sealing member. The frame has an opening and is connectable to the component carrier so that an annular area is defined between the opening and the electronic component. The spray manifold is sealed over the opening to define a spray area over a back surface of the electronic component. The spray manifold sprays a cooling fluid on the back surface. The sealing member seals the annular region so that input/output connectors on the component carrier are isolated from the cooling fluid.