388 results about "Proper length" patented technology

A system and method for selectively activating a device based on an activate command. A circuit, in low power mode, listens for an activate command. The activate command includes a preamplifer centering sequence, an interrupt signal, and an activate code. The circuit receives a signal that may or may not be an activate command, self-biases the signal based on the preamplifer centering in the preamp/gain control, then determines whether the interrupt signal is of the proper length in the interrupt circuit. If the interrupt is not the proper length, the process stops. If it is the proper length, the command is recognized as an activate command, and a data slicer compares the activate code to a prestored value. If the activate code matches the prestored value, the device is powered up. If they do not match, the device is not initiated.

Disclosed is a measuring tape for tape rule consisting of a metallic main body formed into concave upwards shape with a hook provided to its free end, and is labeled with successive graduations and numerals as scales on its upper surface. A transparent protective layer is respectively provided on its upper and lower surface by coating. The front section of the tape near its free end is further protected by enhancing protective layers in proper length by coating on both surfaces of the tape.

The invention belongs to the technical field of sample pretreatment in analytical chemistry and relates to a preparation method and use of a molecular imprinting-absorbing extraction stirring rod. The preparation process of the method comprises the following steps: sintering one end of a capillary glass tube serving as a substrate of the stirring rod, and subjecting to the sintered capillary glass tube to acid and alkali treatment and surface modification by a silylating agent respectively; performing the self-assembly of template molecules and bifunctional monomers in a polymer solvent, adding a crosslinker and an initiator in the solution, plugging the modified capillary glass tube into the solution; drawing the capillary glass tube out; repeatedly coating the capillary glass tube to a required thickness, and aging the coating; cutting a proper length of coated capillary glass tube, putting the length of coated capillary glass tube in a magnetic core, and sintering the capillary glass tube for end sealing; and eluting the template molecules. The molecular imprinting-absorbing extraction stirring rod prepared by the invention can selectively separate and enrich a trace amount of template molecules and analogues at the same time and is suitable for selectively separating, enriching and analyzing a trace amount of template molecules and analogues in complex samples in terms of organism, food and environment.

The invention discloses a time-series data exception detection method and a system thereof. The method comprises the steps of receiving time-series data collected by one or more than one sensor arranged in a machine, wherein latest observation data in the time-series data is taken as to-be-monitored data; calculating the relative outlier distance between parameters in the to-be-monitored data and proper-length time-series corresponding parameters which are cached in the machine, so that outlier data with outlier identifications is further obtained; screening exception observation data from the outlier data by utilizing the correlation of parameter values in the proper-length time-series data, and positioning exception parameters in the exception observation data. According to the time-series data exception detection method, the time-series data exception detection accuracy is increased, and the exception detection correctness is guaranteed.

A bottle partition frame, at least includes adapters, blocking strips and three-way connectors. The adapter has plugged holes at two adjacent sides thereof so that the blocking strips can be plugged in the plugged holes of the adapters which further has a locking hole located in an indentation at a corner thereof for being passed by a locking piece, so that the adapter can be fixed on the corner of the flat board. Furthermore, according to the demands of different objects, the blocking strips can be cut into proper lengths and plugged into the plugged holes of the three-way connectors for assembling, and then, through the engaging portion at the lower end of the through hole of the three-way connector, the three-way connector can be assembled with another blocking strip. Hence, the present invention solves the drawback that the known bottle partition device needs to be locked on the side walls of the drawer.

The present invention provides nano particle size measuring method and device with scattered dynamic low-strength laser. The method includes: radiating liquid sample with monochromic laser beam of proper length to produce scattered light signal; collecting and transmitting to light signal with single-modular fiber with gradient refractive index; recording with single-photon counter module the scattered photons and converting into output electric pulse signal; and processing the signal in an autocorrelator. The device includes: light source, polarizer, focusing lens, two-layered refractive index sample matching pool, fiber, single-photon counter module, autocorrelator and computer. The present invention can measure nano particle size fast and accurately.

The log dyeing method is one circular hot pressing dyeing and normal temperature and pressure dyeing method on log with water content not higher than 8 % and in proper length. The log dyeing process includes the following steps: compounding acid dye aqua; soaking at room temperature for 120-480 min; dyeing at 25-120 deg.c and 10-15 Mpa under stirring for 30-60 min; lowering to room temperature; dyeing at 25-120 deg.c and 10-15 Mpa under stirring for 30-60 min; and so on until reaching the total dyeing time of 600-900 min; washing with water; drying at 25-120 deg.c to water content not higher than 8 %; and discharging. The log dyeing maintains the natural grains of log, raises the density of timber, homogenizes the color of timber, and raises the value of timber.

The invention is an optical A/D converter based on nonsymmetrical Mach-Zehnder modulator, belonging to the optical A/D converter technical field, characterized in that: it uses nonsymmetrical M-Z modulator to modulate electric signal to synchronous multi-wavelength input pulse, and selects proper length difference of two arms DeltaL and N wavelengths, able to make offset of DC biasing point between every two adjacent wavelengths at the outgoing end bepi/N, and the modulated multi-wavelength optical pulse is divided into N synchronous optical pulses by wavelength division multiplexer, and after determined by photoelectric detector and comparer, it can obtain N digital signal outputs. And the invention can implement very large modulated bandwidth and accurately control the offset of DC biasing point of two adjacent channels, implementing higher-digit A/D conversion and easy to implement.

The invention provides a fast treating method of shallow soft foundation by solid and high-vacuum heaped preloading. The method comprises the following steps: (A) the surface of the soft soil is laid with a layer of striped fabric which is laid with a layer of vitex basketry; the vitex basketry is laid with a layer of geotextile which is inserted with a plastic draining board; the plastic draining board is externally left by a proper length and is provided with a horizontal draining facility; one end of the horizontal draining facility is connected with the externally left part of the draining board and the other end thereof is connected with vacuum-pumping equipment; a vacuum film is laid on the horizontal draining facility which is built with a small peripheral dyke and is provided with a water-stop film; (B) vacuum pumping is carried out, and the pumped water is injected into the peripheral dyke so as to form heaped water; and (C) after vacuum pumping is carried out for a period, settling condition is observed; if the settlement everyday is less than 2 to 5mm for continuous 3 to 7 days, the vacuum pumping is stopped. The method provided with invention is adopted to treat the soft soil foundation, thus being capable of achieving the purpose of treating the soft soil foundation fast and simply, also avoiding the use of heavy mechanical equipment and sand mats and reducing the construction cost.

The invention relates to a device utilizing a single longitudinal mode dual wavelength fibre laser to generate a microwave and a millimeter wave and a working method thereof. The device comprises a pump laser, a wavelength division multiplex optical coupler, an ultrashort linear cavity resonator, an optoisolator and a high-speed photodetector which are sequentially connected to form the device, wherein the ultrashort linear cavity resonator comprises a low reflectivity fiber grating, an active optical fibre and a high reflectivity fiber grating which are sequentially connected to form the device. The device uses the two fiber gratings as reflecting mirrors of the laser, and selects the active optical fibre with proper length as a gain medium for the laser, so as to form the ultrashort linear cavity resonator by combination; the frequency-selective property of the ultrashort linear cavity resonator and the wavelength-selective property of the fiber gratings are utilized for realizing the single longitudinal mode dual wavelength output of lasers; and the single longitudinal mode dual wavelength lasers are coupled into a high-speed photodetector, and microwave signals and millimeter wave signals are generated by frequency beating. The method has the characteristics of simple structure, low cost, narrow microwave and millimeter wave signal bandwidth, low noise, etc.

The invention discloses a method for solving link maxim transmitting unit byte amount in two-stage virtual special network, it includes adding a ICMP protocol on PE device, the ICMP protocol can send error report for network, when the length of message sent by user is more than 1522 bytes, the ICMP protocol generates a error report of 'target untouchable' automatically and it can sends the maxim byte amount of message to the user computer, thus the user can resend message with proper length according to the feedback information. By the invention, it can limit the size of message of user computer, prevent from occurring message whose length exceeds 1522 bytes at the source, it can guarantee that the message won't be aborted.

The invention relates to the field of optical fiber coating, in particular to a method for testing geometric parameters of optical fiber coating layers. The method for testing the geometric parameters of the optical fiber coating layers includes the steps: stripping each coating layer from the end face of each optical fiber coating layer to the rear by a proper length and irradiating into the coating layer from a stripped position by a light source; conducting the light source by the coating layer and lighting up the end face of each optical fiber coating layer; and projecting images of the end faces of the optical fiber coating layers into an imaging system. The layers can be distinguished according to different attenuation coefficients of materials of the coating layers and different angles of light incidence. The geometric parameters of the end faces of the optical fiber coating layers are tested by the method, the testing speed and the testing accuracy of a geometric parameter tester for the optical fiber coating layers are greatly improved, and the testing accuracy of the geometric parameters of the primary coating layer is particularly improved.

The invention relates to method for processing bamboo plywood which is homogeneous and forms natural texture; the processing method solves the disadvantages of low productivity, bad levelness of the product surface, uneven product intensity, easy deformation, low strength and narrow application field with the present method. The method includes the following steps that saw bamboo into tubes of proper length and cleave the tubes into slices of proper width and then remove the layers of green color and yellow color; cleave the bamboo slices into thin strips of proper thickness and weave the strips in parallel with wire to form a bamboo curtain and the thickness difference of strips used for the same curtain should be within 1mm; dry and size the curtain and then dry for the second time; pile the curtain on the board of a hot-press layer by layer to form plate blank; the included angle of two neighboring layers is acute or right one and the surface layer or/and the bottom layer consist(s) of one to four bamboo curtains with included angles of zero degree between all strips in the pattern of one to four layers; the plate blank is hot pressed and trimmed to obtain the homogeneous bamboo plywood.

Stacked multichip packages and methods of making multichip packages. A method includes using a boat having different depth openings corresponding to the length of column interconnections of the completed multichip package and masks to place proper length columns in the corresponding depth openings; placing an integrated circuit chip on the boat and attaching exposed upper ends of the columns to respective chip pads of the integrated circuit using a first solder reflow process and attaching a preformed package substrate integrated circuit chip stack to the integrated circuit and attached columns using a second solder reflow process.

The invention discloses a quick response method of multistage gray scale electrophoresis electronic paper. The method is used for driving multistage gray scale electrophoresis electronic paper. The method includes the steps: A, increasing the absolute value of a drive voltage to enable the drive voltage to be greater than 15V; B, applying a voltage waveform that is opposite to the electric property of an original image to erase the original image; C, applying a square wave voltage waveform with a duty ratio being 50% to activate electrophoresis particles; and D, applying a voltage waveform with a proper length to flash a new gray scale. Quick response of multistage gray scale electrophoresis electronic paper is achieved by properly increasing the drive voltage and changing different drive voltage waveform lengths. Concretely, in the step D, quick response of four-stage gray scale electrophoresis electronic paper is achieved by applying a positive voltage, and quick response of above-four-stage gray scale electrophoresis electronic paper is achieved by applying both a positive voltage and a negative voltage.

The invention relates to a single-frequency dynamic cycle slip detection and restoration method based on position domain curve constraint, and the method comprises the steps: selecting a time window with a proper length, solving a kinetic model of a detected object in the time window through the positions of all epochs in the window, taking the obtained kinetic model as a constraint condition, andcombining the constraint condition and a three-difference observation equation of a current epoch for solving and obtaining a floating point cycle slip value; preferably, trying to fix a cycle slip solution through a LAMBDA method. The method is designed according to the data features of a single-frequency low-cost GNSS satellite. The method is suitable for a stationary measurement mode and a dynamic measurement mode. The method is suitable for the combined application of a single-satellite system and a multi-satellite system. A curve fitting constraint equation is built based on the positionparameters, the model strength is higher, and the method is not affected by the changes of available satellites, and is higher in stability. Compared with a conventional three-difference iteration solution baseline method, the method does not require the redundant observation quantity of a single epoch, is wider in application range, and is more suitable for actual application.

Systems and methods in accordance with embodiments of the invention implement magnetoelectric junctions that include integrated magnetization components. In one embodiment, a magnetoelectric junction includes: a first fixed layer; a free layer; a dielectric layer disposed between the first fixed layer and the free layer; at least one magnetization layer that is disposed proximate the free layer; where: the first fixed layer is magnetized in a first direction; the free layer can adopt a magnetization direction that is either substantially parallel with or antiparallel with the first direction; the at least one magnetization layer is magnetized in a second direction that is orthogonal to the first direction; the magnetoelectric junction is characterized by a VCMA coefficient of at least approximately 80 fJ/V·m; and the magnetoelectric junction is configured such that a voltage pulse of a proper length in time can cause the free layer to invert its magnetization direction.