摘要:
A method of manufacturing curved composite structural elements can include fabricating a web ply in a flat curve over a removable substrate and laying up the ply on a curved web surface of a manufacturing tool. The method also can include laying up a diagonal ply with fibers oriented at +/−45° from the centerline of the web surface. The method further can include cutting a unidirectional composite tape into segments and laying up the tape segments to form a cross ply with a fiber orientation normal to the centerline of the web surface. One or both edges of the diagonal and cross plies may be folded over one or two sides of the manufacturing tool to form one or two flange surfaces. Additionally, a cap ply can be laid up on one or both flange surfaces using composite tape. The structural element layup can then be inspected and any excess composite material can be trimmed away.
摘要:
Collecting user preference information related to a playing media recording is accomplished by gathering descriptive information related to the playing media recording from a media player program presenting the playing media recording and determining if tags are embedded in the media recording and gathering descriptive information related to the playing media recording from the tags embedded in the playing media recording, if the tags exist. Further, determining if a table of contents exists on the media recording and gathering a table of contents for a collection containing the playing media recording by identifying the collection using a concatenation of track lengths identifier generation technique, if the table of contents exists. Then assembling the descriptive information into a media recording information packet and sending the media recording information packet to a server computer, resulting in a collection of user preference information related to the playing media recording.
摘要:
An illuminated article includes a module incorporated into the article. The module has a compact housing for a rechargeable battery and inverter circuitry. The inverter circuitry includes a power inverter converting direct current power from the battery to alternative current for output power. The module can also include an illuminated panel. In one embodiment, the illuminated article is an item of apparel, such as a bikini bottom or thong. The module of the apparel positions adjacent a wearer's body and forms a structural component for supporting the apparel on the wearer. Electroluminescent (EL) wires are coupled to the output power of the circuitry and are attached to one or more clothing portions of the apparel. The EL wires position against the wearer's body and also form a structural support for supporting the apparel on the wearer.
摘要:
Certain embodiments provide a heater. The heater includes a ferromagnetic member. The heater also includes an electrical conductor electrically coupled to the ferromagnetic member. The electrical conductor is configured to conduct a majority of time-varying electrical current passing through the heater at about 25° C. The heater is configured to provide a first heat output below the Curie temperature of the ferromagnetic member. The heater is configured to automatically provide a second heat output approximately at and above the Curie temperature of the ferromagnetic member. The second heat output is reduced compared to the first heat output.
摘要:
A semiconductor device comprises at least one first semiconductor layer (1-4) and a second layer (8) applied on at least a surface portion of the first layer for protecting the device. The protecting layer is of a second material having a larger energy gap between the valence band and the conduction band than a first material forming said first layer. The second material has at least in one portion of said protecting layer a nano-crystalline and amorphous structure by being composed of crystalline gains with a size less than 100 nm and a resistivity at room temperature exceeding 1×1010 &OHgr;cm.
摘要:
A field controlled semiconductor device of SiC has a drain, a highly doped substrate layer on top of the drain and a low doped n-type drift layer on top of the substrate layer. A p-type base layer is located on the drift layer and a vertical trench extends through the base layer. In the trench an n-type channel region extends vertically along a wall of the trench and connects a source region layer to the drift layer. A gate electrode is arranged in the trench to be on the opposite side of the channel region with respect to the base layer.
摘要:
The present invention relates to a method for producing a semiconductor device having a semiconductor layer of SiC. The method comprises the steps of a) applying a mask on at least a portion of the SiC layer to coat a first portion of the SiC layer leaving a second portion thereof uncoated, b) applying a heat treatment to the SiC layer, and c) supplying dopants to the SiC layer during the heat treatment for diffusion of the dopants into the SiC layer at the second portion thereof for doping the SiC layer. The mask is made of crystalline AIN as the only component or AIN as a major component of a crystalline alloy constituting the material.
摘要:
A machine for applying labels to products of various sizes employs a movable printer/applicator head. Control circuitry responsive to sensors located along a conveyor by which the products are moved toward the machine generates output signals to an electrical motor which drives the printer/applicator head at a speed defined by the processor output signals. Labels to be printed are supplied to the head from a label supply strip wound on a label supply reel mounted on the stationary part of the machine. The portion of the strip extending between the reel and the head is provided with a loop to assure sufficient length of the strip for free movement by the head. The strip is lengthened by an amount less than the length of a label each time a label is removed and is lengthened by an additional amount each time a short-loop condition is detected. A pick plate assembly for removing unwanted labels is maintained in a retracted position along one side of the head when not in use, in order to avoid interference with the products to be labeled.
摘要:
An integral air inlet which in use admits filtered gases into a fluid container, especially infusion fluid containers, comprises a needle sealed to a housing which is closed by an air filter, the housing having disposed within it a duck bill valve which permits gas to flow from the outside and into the fluid container. The presence of the duck bill valve prevents fluid contacting the air filter thereby reducing the risk of bacterial contamination the fluid when gas is admitted.