Abstract:
A temperature control valve includes a main body, a metal valve assembly and a thermoelectric chip unit. The main body has a first inlet and a first outlet. The metal valve assembly is movably disposed in the main body and includes inlet and outlet ends, the metal valve assembly has a closed end engaged with the main body and an operating end operable from outside of the main body to operate the metal valve assembly, and the operating end is operated to control the first inlet, the first outlet, the inlet end and the outlet end to communicate or non-communicate with one another. The thermoelectric chip unit has a first end abutting against the closed end and a second end and is disposed on the main body, one of the first and second ends is a cold end, and the other is a hot end.
Abstract:
A semiconductor device includes a substrate and a semiconductor unit. The substrate includes a base and at least one pattern unit. The pattern unit includes a plurality of surrounding members disposed on the base and a central member surrounded by the surrounding members. A geometrical center is collectively defined by the surrounding members, an interval between the central member and the geometrical center is larger than zero. The semiconductor unit is disposed on the substrate and is operating with a current.
Abstract:
A variable clock rate device and a method of operating the device. When the display device is first initialized, a pixel clock and a memory read clock are set to the largest values. If the CPU reads from the memory area, the frequency of the pixel clock and the memory read clock is adjusted according to the frequency of the CPU update on-screen memory and the variation of the CPU change on-screen memory block. On the contrary, if the CPU does not initiate any updating, the pixel clock and the memory read clock are tuned down to the smallest possible values to conserve electricity.
Abstract:
A temperature control valve includes a main body, a metal valve assembly and a thermoelectric chip unit. The main body has a first inlet and a first outlet. The metal valve assembly is movably disposed in the main body and includes inlet and outlet ends, the metal valve assembly has a closed end engaged with the main body and an operating end operable from outside of the main body to operate the metal valve assembly, and the operating end is operated to control the first inlet, the first outlet, the inlet end and the outlet end to communicate or non-communicate with one another. The thermoelectric chip unit has a first end abutting against the closed end and a second end and is disposed on the main body, one of the first and second ends is a cold end, and the other is a hot end.
Abstract:
A process for preparing triazolopyrimidine derivatives of the formula (I): wherein R1 represents a hydrogen or an alkyl radical of one to ten carbon atoms, or a cycloalkyl radical of three to six carbon atoms, or an alkenyl radical of up to four carbon atoms; R2 represents a hydrogen, a halogen atom, a hydroxyalkyl or alkyl radical of one to ten carbon atoms; R3 represents a hydrogen, a hydroxyalkyl or alkyl radical of one to four carbon atoms; by rapidly preparing diamino-1,2,4-triazole which is reacted with an aldehyde to form an imide which is reacted with an &agr;,&bgr;-unsaturated acid derivative, the reaction product of which is hydrolyzed in the presence of an acid to produce the triazolopyrimidine derivatives of formula (I). The compounds of the formula (I) are capable of preventing bronchospasm.
Abstract:
A heterocyclic compound has the following formula (I) wherein Y represents a substituted or unsubstituted ethylene group or a trimethylene group, W represents the group —SO2R1, X represents an oxygen atom or sulfur atom or the group —NR2 or —CHR3, R represents a hydrogen atom or a methyl group and Z represents a pyridyl group.
Abstract translation:杂环化合物具有下式(I)其中Y表示取代或未取代的亚乙基或三亚甲基,W表示-SO 2 R 1基团,X表示氧原子或硫原子或-NR 2或-CHR 3基团,R表示 氢原子或甲基,Z表示吡啶基。
Abstract:
A multiple-input multiple-output detector and a detection method using the same are provided. The detection method includes following steps. First, a plurality of candidate results is provided by a plurality of detectors. Next, a channel condition and a detected criterion are provided. Finally, one of the candidate results is selected to serve as a detected result according to the channel condition and the selection criterion.
Abstract:
A rack for supporting an object inside a car includes a holder member and a support member. The holder member is formed of a holder base and a bendable mounting plate that is fixedly connected to the holder base. The bendable mounting plate has an inner side facing the holder base and spacedly disposed from the holder base, and an outer side opposite to the inner side for bonding to a flat wall or a smoothly arched surface inside a car. The support member has a first end connected to the holder base and a second end thereof for supporting an object.
Abstract:
A process for preparing imidacloprid involves reacting 2-nitroiminoimidazolidine with 2-chloro-5-chloromethyl pyridine in the presence of an alkali carbonate in an organic solvent. A stoichiometric amount of the 2-chloro-5-chloromethyl pyridine is gradually added into mixture of a corresponding stoichiometric amount of the 2-nitroiminoimidazolidine and the organic solvent under reflux condition.
Abstract:
A wireless communication system with link adaptation is provided. The wireless communication system may include a channel k-factor estimator estimating a Rician k-factor of a channel based on a signal received from a transmitter, a frequency band grouping unit determining a size of frequency band grouping based on the Rician k-factor, a transmission mode selector determining a transmission mode for each frequency band group based on the Rician k-factor, and a modulation and coding scheme selector determining a modulation and coding scheme for the each frequency band group.