59results about How to "Relaxation of restrictions" patented technology

The invention belongs to the field of microalgae cultivation, and particularly relates to a microalgae half-dry solid state adherent cultivation device for alternate illumination of bright and dark light. The microalgae half-dry solid state adherent cultivation device comprises a bracket system, an adherent cultivation unit, a speed regulating motor, a liquid supplement pipe, a liquid collection tank and a peripheral protection cover, wherein the adherent cultivation unit is arranged on the bracket system and is connected with the speed regulating motor; the liquid supplement pipe is arranged above the adherent cultivation unit, and the liquid collection tank is arranged below the adherent cultivation unit; the liquid collection tank is internally provided with a liquid circulating pump, a liquid supplement device and a carbon supplement device; the liquid circulating pump is connected with the liquid supplement pipe through a pipeline; and the peripheral protection cover is arranged on the periphery of the bracket system and the adherent cultivation unit; and the top surface of the protection cover is made of a light-passing material. The device utilizes the principle of bright and dark flashing light to dilute the bright light and improve the utilization efficiency of luminous energy, thereby improving the yield of microalgae biomass.

The objective of the invention is to provide a method for preparing the lactide, which is characterized in that: the terminal polyhydroxy lactic acid oligomer prepared by the multiple hydroxyl alcohol produces the lactide through thermal degradation. Compared with the method of gaining the lactide through pure lactic acid oligomer thermal degradation, the invention has faster pyrolysis rate of the reaction and higher product yield and can make the size of the oligomer molecular weight suitable for the widening of the range with the objective of high lactide yield.

A solid-state imaging device includes a two-dimensional pixel array in which unit pixels are arranged on a semiconductor substrate, each including a photoelectric conversion element, and a circuit element. When a plurality of adjacent unit pixels are defined as one pixel group set, a plurality of pixel group sets are arranged in the two-dimensional pixel array. In the one pixel group set, a periphery of the one pixel group set is surrounded by an insulating element isolation region that isolates elements in the semiconductor substrate, except for an intermediate portion between two adjacent unit pixels. In the one pixel group set, two adjacent photoelectric conversion elements are arranged so that two floating diffusions respectively connected to the two adjacent photoelectric conversion elements are opposed to each other with the circuit element interposed therebetween. A transistor shared by the one pixel group set is provided in the intermediate portion.

The invention discloses an interference suppression method and device for a dynamic spectrum access system. The system comprises a spectrum management device, a main system comprising a plurality of main devices, and a subsystem comprising a plurality of sub-devices. The method comprises the following steps: sending position information of each sub-device to the spectrum management device; determining a weight factor for the specific sub-device by the spectrum management device according to the received position information; and carrying out second-stage precoding, and in the second-stage precoding, utilizing the weight factor to adjust estimation of power revealed by the specific sub-device to other sub-devices.

The invention discloses a differential game collaborative guidance method based on event triggering, and belongs to the technical field of aircraft guidance. According to the method, based on a differential game theory and a topological structure, a multi-missile cooperative guidance system is modeled into a nonlinear zero-sum differential game system; an event triggering mechanism is introduced, and communication transmission of redundant signals among the missiles is avoided; and an approximate solution of the nonlinear coupling HJI equation set is obtained by using a self-adaptive dynamic programming technology. The optimal controller triggered by the event is updated online in real time, multiple missiles can hit the same target at the same collision angle within the required time, and meanwhile, communication resources and calculation cost between the missiles can be effectively reduced.

Provided is a slide door device for a vehicle, which can release the limit on the design and structure of a slide door and ensure sufficient opening amount. The slide door device includes a body side lower rail (11) disposed below a door opening (10a) formed on a side of a vehicle body and extends in a front-rear direction; a body side rail (12) disposed above the body side lower rail and behind the door opening and extends in the front-rear direction; a door side lower guide roller unit (16) and a door side guide roller unit (17) connected to a slide door (20) and configured to slide on the body side lower rail and the body side rail respectively; a door side lower rail (18) disposed in a lower portion of the slide door positioned below the floor surface in the door opening and extends in the front-rear direction; and a body side lower guide roller unit (13) connected to the lower portion of the door opening and configured to slide on the door side lower rail.

The invention provides a quasi dual junction grid field effect transistor and belongs to the field of the micro-electronic semiconductor technology. The quasi dual junction grid field effect transistor includes the source, drain region, isolation region, body, front grid and back grid. The front grid is the multi crystalline silicon and there is a layer of grid oxygen between the front grid and the channel region. The back grid is the adulterated single crystal of silicon and connects with the body directly to form the P-N junction. Compared with the traditional FinFET, the structure of the invention has two different types of control grids. The back grid (P-N junction gate) is used to exhaust the channel region and to restrain the leakance, while the front grid is used to make the inversion layer in the channel region and to produce great drive current. That the back grid and the front grid of the invention connect with each other directly increases the grid control power of the device greatly and dulls the restrain to the breadth of the isolation region.

The invention discloses a genetically engineered bacterium for efficiently synthesizing riboflavin and application of the genetically engineered bacterium, and belongs to the technical field of biological fermentation. The genetically engineered bacterium has the advantages that genes for encoding purR are knocked down, genes for encoding glnR and tnrA are knocked down, hemoglobin from vitreoscilla is overexpressed, dissolved oxygen limitation in the fermentation process is relieved, the energy consumption in the fermentation process is reduced, and the riboflavin yield is increased; and the riboflavin yield of the constructed engineered strain RF1-aPaGaTgV is increased by 50.78% at a shake flask stage, and reaches 2.51 g/L. At the 5-L fermentation level, the highest yield of the riboflavin obtained by adopting the constructed RF1-aPaGaTgV is increased by 45.51% and reaches 10.71 g/L.

The invention discloses a mark period level light intensity accumulation based method for determining and searching an alignment mark and an alignment system. The method is characterized by comprising the steps of: acquiring light intensity of first level light of each period of a multiple-period mark, accumulating the light intensity to obtain a light intensity signal, and acquiring a position of an alignment mark through the light intensity signal; according to a preset experience threshold of each period, screening a burr point with abnormal light intensity value in the light intensity signal; conducting a minimum threshold inspection on the light intensity signal; if the light intensity signal does not meet the minimum threshold, then conducting position correction; if the light intensity signal meets the minimum threshold, then superposing first level light intensity of each period; after superposition of the light intensity, detecting whether slopes of a highest peak point, a left peak point and a right peak point meet the requirements; if it does not, then conducting position correction; if it does, then using the point as a mark position obtained by superposition of light intensity; and then calculating an absolute value of the mark position with an issued desired mark position to determine whether an alignment mark is successfully searched. The invention also discloses an alignment system, and the alignment system employs the mark period level light intensity accumulation based method.

The invention belongs to the field of microalgae culture and specifically relates to a multilayer semi-dry adherent culture device provided with multilayer adherent culture units. The adherent culture units are arranged horizontally or arranged forming a certain inclination angle from the horizontal plane, and one end of each multilayer adherent culture unit is aligned and the multilayer adherent culture units are parallelly arranged on a bracket system. Lengths of the multilayer adherent culture units are progressively increased successively from top to bottom, and the multilayer adherent culture units are driven by a motor to rotate. During operation of the device, a microalgae seed solution is firstly sprayed through a microalgae inoculators onto each layer of the adherent culture unit successively; a medium drips onto culture surfaces of all the adherent culture units through a medium distributor, and the surplus liquid returns back to a medium collecting tank under the action of gravity so as to be repeatedly used; and when an algae mud scraper is used for harvesting algae mud, the blade sticks close to the surfaces of the adherent culture units, and algae mud is scrapped off into an algae mud collecting tank with rotating of the adherent culture units. According to the invention, the problem of uneven light distribution is solved, the device is convenient for inoculation and harvesting, and efficient utilization of luminous energy is realized.

A baby carriage is provided to prevent deformation of or damage to the baby carriage by releasing a lock member of rear wheels in case when excessive torque is applied to a caster body. A baby carriage(1) includes a first link unit, a second link unit, and a link connection unit. The first link unit includes a front leg and a manual push frame as a part, is parallelogrammic in shape, and moves the manual push frame down horizontally on the ground when the baby carriage is folded. The second link unit is parallelogrammic in shape, includes a pair of rear leg arms arranged in parallel, and moves a rear leg back and forth. The link connection units connect the first and second link units and are interlocked with the first link unit for moving the rear leg to a front leg.

The invention relates to the field of mobile communication, and aims to provide a filtering method for optimizing parameters by adopting a genetic algorithm and a nonlinear convex programming theory. Compared with the conventional digital wireless relay amplification equipment application technology, the method comprises the following steps of: transmitting digital baseband global system for mobile communications (GSM) transmitting signals to a digital GSM filter for frequency selecting filtration, optimizing and calculating the parameters of the filter in advance according to the genetic algorithm and the nonlinear convex programming theory in the process of outputting the filtered GSM baseband signals, and performing frequency selecting filtration on the GSM low-range digital baseband signals by using the novel GSM filter. According to the method, parameter symmetry and linear phase characteristics are not strictly required but compromised by using a series of cost functions, so that the limited degree during parameter optimization is broadened; and by introducing the genetic algorithm for solving nonlinear planning, the optimization effect is further promoted, so that the design result is greatly superior to that of the prior art.

The invention provides a method for voice denoising by using a single noisy voice sample. The method comprises the following steps: (1) for a clean voice signal, respectively superposing synthetic noise and different noise types in the real world to generate a noisy voice sample; (2) for a single noisy voice sample, generating a pair of voice training samples by using a voice down-sampler; (3) converting the trained input voice into a spectrogram, and then inputting the spectrogram into a denoising network for training, wherein the denoising network overlaps a plurality of two-stage Transformer modules between an encoder and a decoder of a ten-layer depth complex Unet; and (4) forming a loss function used for training by basic loss and regularization loss, wherein the basic loss is determined by network characteristics, and the regularization loss can prevent an excessive smoothness phenomenon from occurring in single sample denoising training. Compared with a traditional method for training by using clean voice and a pair of noisy voices, the method obtains better results on a plurality of evaluation indexes such as signal-to-noise ratio, voice quality perception evaluation, short-time objective intelligibility and the like.

The invention discloses a working track planning method and device of an excavator working device capable of avoiding obstacles. The method comprises the following steps: generating a movement obstacle avoidance path point of the excavator working device; based on the motion obstacle avoidance path points, performing motion track planning of the excavator working device, and generating an optimal path; and based on the optimal path, controlling the movement of the working device of the excavator. According to the method, obstacle avoidance and collision avoidance in the movement process of the excavator working device are achieved, the operational constraints of all nodes of the excavator working device are met, the purpose of optimal time can be achieved at the same time, and therefore the working efficiency of the excavator working device is improved, and the limitation that excavation operation depends on professional talents is relieved.