Abstract: The present disclosure relates to MRI device communications. The communications comprise: acquiring a received signal from a transmitting end, the received signal comprising multiple data symbols and multiple training symbol sets, each training symbol set comprising a first preset number of training symbols, with two adjacent training symbol sets of the multiple training symbol sets being spaced apart by a second preset number of the data symbols; extracting the first preset number of symbols from the received signal at intervals of the second preset number of symbols, to obtain a third preset number of symbols as a candidate training sequence; determining whether the candidate training sequence comprises the multiple training symbol sets; and in response to a determination that the candidate training sequence comprises the multiple training symbol sets, determining at least one of synchronization information and channel estimation information of the received signal.

Abstract: A heating plate is included in an electronic device which also includes a processor, a detecting unit, and a battery. The detecting unit detects values of electrical current in certain parts of the electronic device. The processor determines whether any of the detected values falls within a predetermined range. If the detected value falls within a predetermined range, the processor enables a connection between the battery and the heating plate to cause the heating plate to micro-heat the electronic device to promote or accelerate the evaporation of water or moisture in the electronic device. A method for water and moisture disposal by internal heating is also provided.

Abstract: A heating plate is included in an electronic device which also includes a processor, a detecting unit, and a battery. The detecting unit detects values of electrical current in certain parts of the electronic device. The processor determines whether any of the detected values falls within a predetermined range. If the detected value falls within a predetermined range, the processor enables a connection between the battery and the heating plate to cause the heating plate to micro-heat the electronic device to promote or accelerate the evaporation of water or moisture in the electronic device. A method for water and moisture disposal by internal heating is also provided.

Abstract: Described are methods for modifying a substrate by exposing the substrate to a densified fluid. The substrate may be a polymer or a metal alloy, and the densified fluid may be carbon dioxide. Uses of such substrate modification include impregnation of the substrate with one or more drugs, impregnation of microcellular particles, and formation of microcellular compositions.

Abstract: Described are methods for modifying a substrate by exposing the substrate to a densified fluid. The substrate may be a polymer or a metal alloy, and the densified fluid may be carbon dioxide. Uses of such substrate modification include impregnation of the substrate with one or more drugs, impregnation of microcellular particles, and formation of microcellular compositions.

Abstract: A substrate is modified by exposing the substrate to a densified fluid. The substrate may be a polymer or a metal alloy, and the densified fluid may be carbon dioxide. Uses of such substrate modification include impregnation of the substrate with one or more drugs, impregnation of microcellular particles, surface modification of the substrate, and formation of microcellular compositions.

Abstract: Described are methods for modifying a substrate by exposing the substrate to a densified fluid. The substrate may be a polymer or a metal alloy, and the densified fluid may be carbon dioxide. Uses of such substrate modification include impregnation of the substrate with one or more drugs, impregnation of microcellular particles, and formation of microcellular compositions.

Abstract: Described are methods for modifying the surface properties of a polymer substrate by exposing the substrate to a densified fluid and a surface modifying agent. The densified fluid may be densified carbon dioxide and the surface modifying agent may be one which reduces the surface tension of the polymer substrate, for example as incorporated into a medical device such as a catheter.

Abstract: A portable device with an automatic power off protection and a method of achieving such a protection are related. The portable device circuit comprises a switch unit, a main body, and a battery. The main body includes an acceleration transducer that samples an analog acceleration signal; an analog-to-digital converter (ADC) that converts the sampled analog acceleration signal into a digital acceleration value; a memory that stores a critical acceleration value and an interrupt flag; and a micro-control unit (MCU) that compares the digital acceleration values with the critical acceleration value and the comparing result which may or may not change the value of the interrupt flag. When the acceleration of the portable device is greater than the critical acceleration and the interrupt flag is enable, the MCU sends a break signal to the switch unit to power off the portable device.

Abstract: A passive radio frequency identification (RFID) chip with a protection function against high-intensity electromagnetic fields includes an antenna for receiving electromagnetic waves generated by an RFID reader and generating AC electrical signals to output to a power unit at an output of the antenna; an input/output circuit; a logic circuit; the power unit for rectifying the AC electrical signals into DC (direct current) voltage and outputting the DC voltage to the logic circuit and the input/output circuit at an output of the power unit; a variable-capacitance diode including an anode connected with the output of the antenna and a cathode connected to ground; and a diode including an anode connected with the output of the power unit and a cathode connected with the output of the antenna. The passive RFID chip prevents the inner logic circuit and the input/output circuit from being damaged when receives high-intensity electromagnetic waves.

Abstract: A passive radio frequency identification (RFID) chip with a protection function against high-intensity electromagnetic fields includes an antenna for receiving electromagnetic waves generated by an RFID reader and generating AC electrical signals to output to a power unit at an output of the antenna; an input/output circuit; a logic circuit; the power unit for rectifying the AC electrical signals into DC (direct current) voltage and outputting the DC voltage to the logic circuit and the input/output circuit at an output of the power unit; a variable-capacitance diode including an anode connected with the output of the antenna and a cathode connected to ground; and a diode including an anode connected with the output of the power unit and a cathode connected with the output of the antenna. The passive RFID chip prevents the inner logic circuit and the input/output circuit from being damaged when receives high-intensity electromagnetic waves.

Abstract: An audio processing system includes an audio input apparatus, a frequency selecting unit, and an audio output apparatus. The audio input apparatus is used for receiving audio waves, and converting the audio waves to electric signals. The frequency selecting unit is used for filtering the electric signals, and generating filtered electric signals, the frequency selecting unit having adjustable passing-range. The audio output apparatus is used for converting the filtered electric signals into audible sound. An audio processing method for filtering inputted signals in a predetermined passing-range is also disclosed.

Abstract: A method for saving power of an electronic apparatus is provided. The apparatus includes an input unit for receiving operational inputs, a backlight unit for providing lighting, a setting table for recording relationship between operation modes and predetermined time periods. The method includes: reading a corresponding predetermined time period from the setting table according to a current operation mode; enabling or remaining enabling the backlight unit; and disabling the backlight unit when after a time period of not receiving operational inputs for the read predetermined time period.

Abstract: A double-side display includes two display screens (101, 101?) mounted back-to-back. The display screens are driven by a first driving circuit (130) and a second driving circuit (160) respectively and share a backlight module (150). The first driving circuit and the second driving circuit receive data that a first data interface (104) and a second data interface (105) transmits from at least two computers correspondingly. The first driving circuit, the second driving circuit and the backlight module receive DC power at suitable voltages supplied from a DC/DC converting circuit (120).

Abstract: A portable device with an automatic power off protection and a method of achieving such a protection are related. The portable device circuit comprises a switch unit, a main body, and a battery. The main body includes an acceleration transducer that samples an analog acceleration signal; an analog-to-digital converter (ADC) that converts the sampled analog acceleration signal into a digital acceleration value; a memory that stores a critical acceleration value and an interrupt flag; and a micro-control unit (MCU) that compares the digital acceleration values with the critical acceleration value and the comparing result which may or may not change the value of the interrupt flag. When the acceleration of the portable device is greater than the critical acceleration and the interrupt flag is enable, the MCU sends a break signal to the switch unit to power off the portable device.

Abstract: An article comprising wood can be preserved by applying to the wood an effective amount for the preservation of the wood of a polymeric phenol sulfide having a tri- or higher sulfide bridge therein, which can be a polymeric alkyl phenol sulfide, such as one containing an alkyl group containing from one to about four carbon atoms in the alkyl group contained therein of the following formula, where R is the alkyl group,: where R is alkyl, m is from 1 to 3, n ranges from about 2 to about 10, and x is 3 or higher.

Abstract: A process for the manufacture of a polymeric phenol sulfide, which can be a polymeric alkyl phenol sulfide, such as one containing an alkyl group containing from one to about four carbon atoms in the alkyl group contained therein of the following formula, where R is the alkyl group,: where R is alkyl, m is from 1 to 3, n ranges from about 2 to about 10, and x ranges from 1 to about 4.

Abstract: An article comprising wood can be preserved by applying to the wood an effective amount for the preservation of the wood of a preservative composition consisting essentially of a polymeric phenol sulfide having a tetra- or higher sulfide bridge therein alkyl phenol sulfide, such as one containing an alkyl group containing from one to about four carbon atoms in the alkyl group contained therein of the following formula, where R is the alkyl group,: ##STR1## where R is alkyl, m is from 1 to 3, n ranges from about 2 to about 10, and x is about 4.

Abstract: Blends can be formed which comprise a flexible coil polymer substrate, e.g., of a poly(alkylene terephthalate), and a thermotropic, essentially liquid crystalline oligomer which comprises aromatic units and at least one linear polyalkylene spacer. These blends can be used to form fibers or molded articles.

Abstract: A single reactor process for formation of block copolymers comprising aromatic ester mesogenic units containing flexible alkane spacers and polyester flexible coil units in the main chain thereof which comprises reacting an .alpha.,.omega.-bis(hydroxybenzoyloxy) alkane monomer with an aromatic acid chloride in the presence of a functionalized flexible coil oligomer under temperature conditions in which an acid chloride-terminated bis(hydroxyalkyl terephthalate) oligomer was first formed at a first, lower temperature and the block copolymer was then formed at a second, higher temperature by reacting this oligomer with the functionalized flexible coil oligomer.