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An optical storage system suitable for optical storage and retrieval of information using a storage medium comprising a substrate, an active layer for retention of the data, and an overlying optical layer, or layers for double-sided. The optical layer serves to produce an evanescent field in or adjacent to the active layer in response to an incident beam of radiation. The evanescent field is frustrated or attenuated by the data in the active layer and produces a signal.

An apparatus for carrying out algae intensive-cultivation while conducting an environmental control most suitable for growth of algae in an artificial environment including dissolved gas, light, temperature, nutrient source and sanitary atmosphere; and a method of intensive cultivation therewith. There is provided an apparatus comprising water tank (1) for cultivating unialgae as seedling; gas dissolution diffusion units (3-a, 3-b) for achieving dissolution of a gas in a culture water of the water tank; light irradiation units (10, 11) for irradiating the water tank with light whose wavelength and illuminance are controlled; temperature control unit (20) for controlling the temperature of the culture water of the water tank so as to fall within a given range; nutrient salts adding unit (17) for adding to the water tank a nutrient liquid containing an essential nutrient source vital to the growth of algae; purification unit (12) for carrying out bacterial eradication and filtration of the culture water of the water tank; and meters for control of the above units.

The present invention discloses porous covalent organic frameworks (COF) supported noble metal-free nanoparticles which are useful as electrocatalysts for a water splitting system, and to the process for preparation of such electrocatalysts. The covalent organic frameworks (COF) supported noble metal-free nanoparticles have general formula (I):COF_AxBy(M)n  (Formula I)wherein COF is selected from a Tris (4-formylphenyl)amine terephthaldehyde polymer or a benzimidazole-phloroglucinol polymer;‘A’ and ‘B’ each independently represent a transition metal selected from the group consisting of Ni, Co, Fe, Mn, Zn, and mixtures thereof; or ‘A’ and ‘B’ together represent a transition metal selected from the group consisting of Ni, Co, Fe, Mn, Zn, and mixtures thereof;‘M’ represents hydroxide or a nitride ion;‘x’ and ‘y’ represent the weight % of the metal loadings; or a ratio of x:y is between 0:1 and 1:0; and‘n’ is an integer 1 or 2 or 3.

The invention provides a grid-connected photovoltaic power generating system based on a novel direct current converter and a working method of the grid-connected photovoltaic power generating system. The grid-connected photovoltaic power generating system is characterized in that the grid-connected photovoltaic generating power system consists of a direct current converter, a grid-connected inverter, an isolation transformer and a control circuit; the working method comprises the steps as follows: 1. collecting signal; 2. MPPT module data processing; 3 applying an MPPT arithmetic; 4 inverter module data processing; 5. applying a grid-connected arithmetic; and 6. applying SPWM arithmetic. The grid-connected photovoltaic power generating system and the working method thereof have the advantages of small technical realization difficulty, obviously reducing the cost, flexible installation, convenient maintenance, high voltage and current detection precision, advanced control arithmetic, quick running speed of control chip, the system being capable of obtaining excellent tracking precision and stability, combining the hardware device with the software programming of a digital signal processor, simple design, low cost and easy realization of the hardware device, brief and understandable software programming arithmetic.

An all solid state battery having high output performance and a manufacturing method thereof are provided. The all solid state battery of the present invention comprises a negative electrode layer, a positive electrode layer, and a solid electrolyte layer having a lithium ion conductivity. At least one layer of the solid electrolyte, the positive electrode layer, and the negative electrode layer includes a lithium ion conductive crystal and AxByOz (A is one or more selected from the group consisting of Al, Ti, Li, Ge, and Si. B is one or more selected from the group consisting of P, N, and C, wherein 1≦X≦4, 1≦Y≦5, and 1≦Z≦7). The solid electrolyte material to which a preferable sintering additive is added in a predetermined ratio is densified by firing at relatively low temperature in the manufacturing process. The ion conductivity thereof is also high.

The invention discloses a gesture-wakened electronic device and a gesture wakening method thereof. The gesture-wakened electronic device comprises a sound generator, a sound receiver, a filter, a gyroscope, an accelerator and a controller. The sound generator transmits sound wave; the sound receiver receives an acoustic positioning detection signal reflected by a moving object; the signal is filtered by the filter to remove background noise. The controller judges current motion state according to the gyroscope and the accelerator. The controller calculates changes in displacement of the moving object according to time of sound wave propagating in the air when in the current motion state of the electronic device; the controller recognizes a motion pattern of the moving object according to the changes in the displacement; if the motion pattern matches with an appointed device wakening pattern in a motion pattern mapping command base, the electronic device is wakened to run. The gesture-wakened electronic device and the gesture wakening method thereof have the advantages that control convenience level is increased, user experience is improved, the gesture recognition technology is combined with the gyroscope and the accelerator, frequent waking of the device caused by maloperation or misjudgment is avoided, and standby power consumption is optimally balanced.

The invention discloses a multi-frequency range TETRA digital cluster detection apparatus and a detection method applying the apparatus. The apparatus comprises a multi-frequency range receiver radio frequency front end, a digital intermediate frequency processing plate, a reference source and a secondary power supply, and is characterized in that the multi-frequency range receiver radio frequency front end simultaneously receiving a multipath signal within any one frequency range; the digital intermediate frequency processing plate is in charge of processing of receiving data and control of a whole machine, and provides an external interface; the reference source provides a reference clock; and the secondary power supply supplies working power to the other aforementioned parts. By using the method and apparatus provided by the invention, the realization complexity and production cost of a TETRA digital cluster detection apparatus can be reduced, and the interference resistance is improved.

A wavelength tunable laser device includes: a laser cavity formed of a grating and a reflecting mirror including a ring resonator filter; a gain portion; and a phase adjusting portion. The grating creates a first comb-shaped reflection spectrum. The ring resonator filter includes a ring-shaped waveguide and two arms and creates a second comb-shaped reflection spectrum having peaks of a narrower full width than peaks in the first comb-shaped reflection spectrum at a wavelength interval different from that of the first comb-shaped reflection spectrum. One of the peaks in the first comb-shaped reflection spectrum and one of the peaks in the second comb-shaped reflection spectrum are overlapped on a wavelength axis, and a spacing between cavity modes is narrower than the full width at half maximum of the peaks in the first comb-shaped reflection spectrum.

A water-absorbing resin has a polymer molecular chain in which 50 mol % or more of repeating units in the chain are carboxy group-containing units, wherein the carboxy group neutralization ratio in the central part of the resin is 60 mol % or more and the carboxy group neutralization ratio on the external surface of the resin is 50 mol % or less. A method for producing the water-absorbing resin comprises polymerizing a monomer solution to form a polymer, drying the resulting polymer, and heat-treating the dried polymer, wherein the monomer solution contains a mixture comprising an alkali metal salt of an unsaturated carboxylic acid and an ammonium salt thereof, the percentage of the ammonium salt being more than 50 mol % of the mixture, and further contains a condensation crosslinking agent.

The invention provides a position signal damping method of an inertial navigation system based on variable damping coefficient. The method mainly comprises the steps of determining the introduction position of a signal damping network, treating the signal damping network and introducing a signal treatment network into the inertial navigation system. The method has the advantages and the characteristics that the introduction of parameters of a position damping network can realize the effective damping of periodic oscillation errors of the earth and greatly improve the precision of the system; although the introduction of the three-order position damping network increases the realization difficulty, the performances thereof are better than those of the first-order and the second-order damping networks; and the introduction of the position damping network with the variable damping coefficient can greatly improve the adaptability to the motion of ships and lead the method to be more applicable to a variety of motorized motion states of the ships.

The present invention relates to stabilised <99m>Tc radiopharmaceutical compositions, which include both a radioprotectant and one or more antimicrobial preservative(s), and hence have an extended lifetime of use. The radioprotectant is ascorbic acid, para-aminobenzoic acid, gentisic acid or a salt thereof with a biocompatible cation, and the antimicrobial preservative is one or more compound from the paraben series of preservatives. The invention is particularly useful for cationic, lipophilic <99m>Tc heart imaging agents such as Myoview(TM).

In a voltage detecting apparatus, a voltage controlled oscillator, when an input voltage is applied thereto, outputs a signal with a logical value that is periodically inverted. A detector counts a number of logical inversion of the output signal from the voltage controlled oscillator over an interval between edges of pulses of a pulse signal to thereby generate, based on the counted number of logical inversion, digital data as a detected result of the input voltage. A determiner determines whether a reduction of a time required to detect the input voltage is higher in priority than an increase of a resolution of detection of the input voltage. A variably setting unit variably sets a frequency of the pulse signal based on a result of the determination of whether the reduction of the time required to detect the input voltage is higher in priority than the increase of the resolution of detection of the input voltage.

A surface treatment device includes a working platform, a laser source, a focus lens, a detector and a controller. The working platform is provided for supporting a workpiece thereon. The laser source is provided for producing laser beams. The focus lens is arranged between the working platform and the focus lens for focusing the laser beams to a spot for treating the workpiece. The detector is provided for detecting information of the spot and generating a feedback signal corresponding to the detected information. The controller is electrically connected with the laser source, the working platform and the detector and configured for receiving the feedback signal from the detector to control emitting of the laser beams of the laser source and movement of the working platform.

An improved rotating anode x-ray tube housing is disclosed. In the preferred embodiment: a single cable, insulated with Ethylene-Propylene Rubber (“EPR”), has an extended Federal Standard terminal or plug mounted within an extended Federal Standard receptacle, attached to an anode end of the housing; the cable is designed to carry up to approximately 150 kV to power the cathode; and insulation of the plug also insulates the 150 kV from a grounded center portion of the x-ray tube and the anode disk area. The longitudinal axes of the anode and high-voltage plug are parallel to one another. This new configuration allows the cathode plug and receptacle to be moved virtually entirely inside the housing. This results in absolute minimal size of the assembly, and a single cable that exits parallel to the rotational axis of the housing.

To provide a sintered silicon nitride with conductivity and densification, an oxide of titanium group elements, such as titanium oxide, hafnium oxide, zirconium oxide and the like, aluminum oxide and / or aluminum nitride is added as needed to silicon nitride-oxidant of rare-earth elements-aluminum oxide system or silicon nitride-oxide of rare-earth elements-magnesia system, and then specified quantity of carbon nonotube (CNT) is added to the above mixture. CNT generates silicon carbide after the reaction with contiguous or proximal silicon nitride and the like depending on the sintering duration at high temperature. Since silicon carbide is generated along with nanotubes, the silicon carbide functions as conductor with excellent heat resistance, corrosion resistance and the like.

The invention relates to an asynchronous time warping calculation method for virtual reality. The asynchronous time warping calculation method for virtual reality is characterized by starting an independent CPU thread at a virtual reality synthesizing end; and according to the time of generation of a vertical synchronizing signal every time, generating a video card work task in advance, wherein the video card work task distributes time warping and the time warping operation and the content rendering operation are operated asynchronously to guarantee that the rendering content through time warping calculation can be displayed in a head wearable device in real time. The asynchronous time warping calculation method for virtual reality has the advantages that the designed asynchronous time warping calculation method can effectively solve the problem that too long time delay for display can cause motion sickness and the like, so as to provide good virtual reality immersion feeling for a user.

The invention belongs to the technical field of mobile communication and provides a channel estimation method based on a time-domain sliding window. The method includes the following steps: according to reference signal sign frequency domain estimation values in the time-domain sliding window, calculating time-domain estimation coefficients corresponding to subcarriers on OFDM symbol positions; according to the reference signal symbol frequency domain estimation values and the time-domain estimation coefficients, performing time-domain channel estimation on OFDM symbols without reference signals and outputting a channel estimation value; and updating the reference signal symbol frequency domain estimation values in the sliding window. The invention also provides a channel estimation device based on the time-domain sliding window. The device is capable of obtaining a higher channel estimation precision compared with a linear interpolation estimation technology based on two reference signals; the time-domain sliding window is adopted and in terms of time, channel information in the history or at a present moment is mainly used and a repeated or mixed output mode is adopted so that the estimation performance is improved and at the same time, larger processing waiting or realization difficulties are not brought; and the real-time update of the sliding window ensures self-adaption to a time-varying channel in an estimation process.

Provided is an alkali-free glass substrate having a high strain point and excellent bubble count, and a method for manufacturing the alkali-free glass substrate. The method includes: a batch preparing process of preparing a raw material batch so as to obtain alkali-free glass containing, in mass %, 50 to 80% of SiO2, 15 to 30% of Al2O3, 0 to 4.5% of B2O3, 0 to 10% of MgO, 0 to 15% of CaO, 0 to 10% of SrO, 0 to 15% of BaO, 0 to 5% of ZnO, 0 to 5% of ZrO2, 0 to 5% of TiO2, 0 to 15% of P2O5 and 0 to 0.5% of SnO2 as a glass composition; a melting process of melting the prepared raw material batch; a fining process of fining the molten glass; and a forming process of forming the fined glass into a sheet shape. The raw material batch is melted such that a bubble enlarging temperature of the obtained glass is lower than a maximum temperature of the fining process.

A device for attachment to the deck of a surfboard or paddleboard for making paddling a surfboard or paddleboard more comfortable and easier to paddle. On a surfboard the device can also assist in attaining proper speed and so that a surfer can more easily “pop-up.” The pop-up assist generally comprises a main body having a generally wedge shape attached to the deck of the surfboard generally where the lower chest or abdomen of the surfer, makes contact with the board. The pop-up assist generally creates a wedge between the body of the surfer or paddler and the deck of the surfboard, lifting the user's upper chest, neck and, head up from the deck of the board.

To provide a sintered silicon nitride with conductivity and densification, an oxide of titanium group elements, such as titanium oxide, hafnium oxide, zirconium oxide and the like, aluminum oxide and / or aluminum nitride is added as needed to silicon nitride-oxidant of rare-earth elements-aluminum oxide system or silicon nitride-oxide of rare-earth elements-magnesia system, and then specified quantity of carbon nonotube (CNT) is added to the above mixture. CNT generates silicon carbide after the reaction with contiguous or proximal silicon nitride and the like depending on the sintering duration at high temperature. Since silicon carbide is generated along with nanotubes, the silicon carbide functions as conductor with excellent heat resistance, corrosion resistance and the like.

An all solid state battery having high output performance and a manufacturing method thereof are provided. The all solid state battery of the present invention comprises a negative electrode layer, a positive electrode layer, and a solid electrolyte layer having a lithium ion conductivity. At least one layer of the solid electrolyte, the positive electrode layer, and the negative electrode layer includes a lithium ion conductive crystal and AxByOz (A is one or more selected from the group consisting of Al, Ti, Li, Ge, and Si. B is one or more selected from the group consisting of P, N, and C, wherein 1≦X≦4, 1≦Y≦5, and 1≦Z≦7). The solid electrolyte material to which a preferable sintering additive is added in a predetermined ratio is densified by firing at relatively low temperature in the manufacturing process. The ion conductivity thereof is also high.

The invention relates to a tea tree cultivation method suitable for mechanized management. The tea tree cultivation method suitable for mechanized management comprises arrangement of protecting tea rows, tea tree planting rows, preparation rest areas and working channels. The tea tree cultivation method is characterized in that the protecting tea rows (2) are respectively arranged on the periphery within a planting field (1), the tea tree planting standards of the protecting tea rows (2) conform to the requirements of the tea tree planting rows (3); longitudinal working channels (6) are arranged between the tea tree planting rows (3); the longitudinal working channels (6) arranged between the tea tree planting rows (3) are communicated with horizontal working channels (5), and two preparation rest areas (4) communicated with the longitudinal working channels (6) and the horizontal working channels (5) are arranged in an opposite angle area of the planting field (1). Whole-course mechanized management of a tea garden can be achieved, and pressure of labor shortage is relieved.

The invention relates to a computer unified device architecture (CUDA)-based multi-system signal frequency rapid acquisition implementation method. The method is characterized by being based on a high-performance private computer (PC), using the CUDA, and realizing rapid acquisition of the multi-system signal frequency through a parallel way. The method comprises the implementation steps of setting Doppler and Doppler changing rate segments; determining the number of blocks of each graphics processing unit (GPU) kernel function and the number of threads of each block; reading signal data into a GPU card overall storage space; starting a down-conversion and integrator module; performing parallel fast Fourier transform (FFT) operation; searching the maximum spectral line and corresponding Doppler changing rate segments and Doppler segments through a parallel reduction manner; and computing estimated values of carrier frequency offset and the Doppler changing rate to complete acquisition. The signal frequency rapid acquisition algorithm is in accordance with the CUDA and working characteristics of the GPU, so that the method can take full advantage of the parallel computing power of the GPU, is suitable for multiple systems of signals, effectively improves the acquisition speed and is easy to realize.

The present invention is a receiving circuit used for a cellular phone that is reduced in size and can realize low power consumption. In a signal reception circuit that is used in a cellular phone that perform transmission and reception of a plurality of band wireless signals and includes a low-pass filter for removing blockers unnecessary for signal reception, the low-pass filter 104 is composed of a plurality of filters composed of a plurality of different circuit configurations and having a plurality of different pole positions, switching between a filter for blocker removal and a filter configuration with reduced sensitivity degradation is performed by combining a plurality of filters for each signal reception band, and by performing power-off of an unnecessary filter portion in the filter configuration, power consumption is reduced. By constituting a plurality of different filters using filters mutually complementing their characteristics, a redundant filter configuration can be avoided, so that the area thereof can be suppressed to necessity minimum, and cost can be reduced.

The embodiment of the invention provides a server overload control method. The method comprises the following steps: a client calculates and stores time data of each historical transaction; The clientend calculates a timeout reference time length of the current transaction according to time data of each of the historical transactions in a preset period; The client end calculates the transaction timeout length of the current transaction according to the timeout reference length of the current transaction; The client controls the state of the current transaction according to the transaction timeout length of the current transaction. The invention also provides a server. The server and the overload control method thereof provided by the invention can solve the problem of overload of the server.

The invention belongs to the technical field of power system equipment state detection and in particular to a system and method for detecting distribution network pole-mounted equipment fault discharge. The system comprises an acquisition module used for collecting the power-frequency periodic signal, the UHF signal and the ultraviolet photon signal of the distribution network pole-mounted equipment; a multichannel AD continuous conversion module used for converting an analog signal output by the acquisition module into a digital signal; a MCU module used for obtaining the digital signal output by the multichannel AD continuous conversion module, and extracting the amplitude and the time of the UHF signal, its phase relation with the power-frequency periodic signal and the number of ultraviolet photons; and a control terminal connected with the MCU module through a communication module and used for drawing a PRPD map, displaying the number of ultraviolet photons, identifying a fault discharge type, and displaying a result. The system realizes the noncontact detection of the distribution network pole-mounted equipment by a UHF method and an ultraviolet detection method, and identifies the internal discharge and the external discharge according to the technical characteristics of the UHF method and the ultraviolet detection method.

The invention discloses an identity authentication method and device for a multi-mode PPG signal. The method comprises the following steps: simultaneously acquiring a first PPG signal of a first acquisition device and a second PPG signal of a second acquisition device by using a synchronous control program; respectively carrying out feature extraction and calculation on the first PPG signal and the second PPG signal, and then obtaining a new difference feature combination according to the feature combination of the first PPG signal and the second PPG signal; and inputting the new difference feature combination into the trained identity authentication model for user identity authentication, and outputting an authentication result. By adopting the technical scheme of the invention, safer multi-modal user authentication can be realized by utilizing the new features, the cracking difficulty is increased, and the identity authentication security is further improved.

A water-absorbing resin has a polymer molecular chain in which 50 mol % or more of repeating units in the chain are carboxy group-containing units, wherein the carboxy group neutralization ratio in the central part of the resin is 60 mol % or more and the carboxy group neutralization ratio on the external surface of the resin is 50 mol % or less. A method for producing the water-absorbing resin comprises polymerizing a monomer solution to form a polymer, drying the resulting polymer, and heat-treating the dried polymer, wherein the monomer solution contains a mixture comprising an alkali metal salt of an unsaturated carboxylic acid and an ammonium salt thereof, the percentage of the ammonium salt being more than 50 mol % of the mixture, and further contains a condensation crosslinking agent.