摘要:
A chromatic element includes a sealed enclosure, a first heating element, a chromatic material layer, and a second heating element. The sealed enclosure includes an upper sheet and a lower sheet, and defines a room between the upper sheet and the lower sheet. The upper sheet is semitransparent. The first heating element is located on the upper sheet. The second heating element is located on the lower sheet. The chromatic material layer is located in the room. The location of the chromatic layer changes by heat from the first heating element or the second heating element.
摘要:
A whip dual-band antenna is disclosed in the present invention, and includes a radiator which is connected with a radio via a feed point of the radio, wherein the radiator includes a linear first radiator for generating a first resonance, a helical second radiator is set on the top of the first radiator in an inverse series manner, and the second radiator is used for generating a second resonance whose frequency is higher than the resonance frequency of the first radiator. In the present invention, by adding additionally a second radiator with a higher resonance frequency on the top of a first radiator dexterously, the length of the model of the second resonance frequency is increased, and the effect of the change of the UltraHigh Frequency (UHF) band is decreased. The antenna performance is better concentrated on the upper hemisphere when the dual-band antenna is operating in the Global Positioning System (GPS) frequency band, so as to implement a better GPS gain performance without affecting the effect in the UHF band.
摘要:
A method of manufacturing a heat sink includes, firstly, providing a plurality of fins each having a head and a body extending from the head, providing a base having a plurality of studs protruding from a top surface thereof, and providing a cover defining a plurality of recesses in a bottom thereof for receiving the heads of the fins and a plurality of orfices for receiving the studs. Next, the cover and the base are pressed to sandwich the heads of the fins therebetween. Then the studs of the base are punched to expand the studs and cause the studs to intimately engage with the cover.
摘要:
A thermoacoustic device includes a substrate, at least one first electrode, at least one second electrode and a sound wave generator. The at least one first electrode and the at least one second electrode are disposed on the substrate. The sound wave generator is contacting with the at least one first electrode and the at least one second electrode. The sound wave generator is suspended on the substrate via the first electrode and the second electrode. The sound wave generator includes a carbon nanotube structure.
摘要:
A clamp mechanism for clamping a heat sink is disclosed in the present invention. The clamp mechanism includes a base. An accommodating space is formed on a side of the base, and the accommodating space is for accommodating the heat sink. The clamp mechanism further includes at least one constraining component pivoted to the base for engaging with an engaging portion of the heat sink, so as to fix the heat sink inside the accommodating space. The clamp mechanism further includes at least one contacting component pivoted to the base for buckling a hook of the heat sink when pivoting relative to the base, so as to rotate the hook relative to a shaft of the heat sink.
摘要:
Provided are a plant stress tolerance related protein GmSIK1 and encoding gene and use thereof. The GmSIK1 protein has the amino acid sequence as shown in SEQ ID NO: 2. The transgenic plant with enhanced stress tolerance such as drought tolerance and/or salt tolerance can be obtained from introducing the encoding gene of GmSIK1 protein into plant cell.
摘要翻译:提供植物胁迫耐受相关蛋白GmSIK1和编码基因及其用途。 GmSIK1蛋白具有如SEQ ID NO:2所示的氨基酸序列。通过将GmSIK1蛋白的编码基因导入植物细胞,可以获得具有增强的胁迫耐受性如耐旱性和/或耐盐性的转基因植物。
摘要:
A thermal-chromatic element includes a sealed enclosure, an isolation layer, a first heating element, a thermal-chromatic material layer, a second heating element and an absorption material layer. The isolation layer is disposed in the sealed enclosure and separates the sealed enclosure into a first chamber and a second chamber. The first heating element is configured to heat thermal-chromatic material layer in the first chamber. The thermal-chromatic material layer is disposed in the first chamber. The thermal-chromatic material layer is able to change color by releasing and absorbing water. The second heating element is configured to heat absorption material layer in the second chamber. The absorption material layer is disposed in the second chamber.
摘要:
Modern coding and modulation techniques have greatly improved the transmission of signals. A method is described including receiving a stream of data bits, demultiplexing the stream into a first and second substream, encoding the first and second substream using a low density parity check coding process, and mapping the first substream to a first region of a symbol constellation map and the second substream to a second region. Also, an apparatus is described including a demultiplexer that produces a first and second bitstream, a first encoder that encodes the first substream using a low density parity check coding process at a first encoding rate, a second encoder that encodes the second substream at a second rate, and a symbol mapper that maps bits from the first substream to a first region of a symbol constellation map and maps bits from the second substream to a second region.
摘要:
A dual frequency antenna is provided, which includes a helical radiator electrically connected to a main body via a feed point of the main body, a first radiator for generating resonance is formed on the lower portion of said radiator, a second radiator for generating resonance is formed on the upper portion of said radiator, wherein the resonance frequency of the second radiator is higher than that of the first radiator, and the helical pitch of the second radiator is larger than that of the first radiator. The dual frequency antenna easily enables tuning in a whole UHF frequency band, and work performance of an upper semi-sphere of the dual frequency antenna is improved in a GPS frequency band.
摘要:
A vacuum packaging system includes a vacuum room, a delivery apparatus, a discharge device, a second heating apparatus. The delivery apparatus transport the pre-packaged container into the vacuum room. The discharge device discharges a sealing material to seal an exhaust through hole of the pre-packaged container. The discharge device includes a vessel configured for containing sealing material, a transport pipeline, a first heating, and a controlling element. The first heating apparatus softens the sealing material into viscous liquid. The second heating apparatus is mounted on the inner wall of the vacuum room between the second hatch and the transport pipeline.