Abstract: A laser driving device and a method for enabling a uniform light field, wherein the laser driving device is a high-power laser driving device that enables a uniform light field on the basis of a narrow-band low-spatial-coherence light and is provided for laser fusion. The narrow-band low-spatial-coherence light is configured as a seed of the laser driving device, an amplification and transmission unit amplifies the seed, a frequency conversion unit converts a frequency of the laser, and a focusing component is configured for laser focusing and uniform illumination.

Abstract: The present disclosure is an electromagnetic force control method of a magnetic disk type negative stiffness electromagnetic actuator. The present disclosure relates to the technical field of vibration control. According to the actually required static bearing capacity, the present disclosure determines the positive stiffness k of a mechanical spring required for a magnetic disk type quasi-zero stiffness vibration isolator; and establishes an electromagnetic force mathematical model of a single electromagnet under a condition of magnetic unsaturation.

Abstract: The present disclosure relates to the technical field of biotechnology and polymer synthesis, and discloses a method for producing polylactic acid, the method comprises the following steps: (i) inoculating a lactic acid fermentation strain into a lactic acid fermentation culture medium to perform a fermentation, so as to obtain a fermentation broth containing lactate; (ii) separating the fermentation broth to obtain a lactic acid; (iii) synthesizing a polymer-grade lactide by using the lactic acid as a raw material; (iv) subjecting the polymer-grade lactide to a polymerization reaction in a polymerization reaction device to obtain a polylactic acid. Through the above technical solution, the polylactic acid can be efficiently produced in the present disclosure.

Abstract: The present invention relates to the technical field of polylactic acid preparation, and discloses polylactic acid polymerization reaction apparatus and system. The polylactic acid polymerization reaction apparatus comprises a polymerization reactor and an agitating assembly arranged in a flow channel of the polymerization reactor, wherein the agitating assembly comprises an electromagnetic winding mechanism and a magnetic induction element, the electromagnetic winding mechanism is arranged along the inner wall of the polymerization reactor around the magnetic induction element, with clearance formed between the electromagnetic winding mechanism and the magnetic induction element, so that the magnetic induction element and the electromagnetic winding mechanism can induce electromagnetic induction, and thereby the magnetic induction element can rotate around its own axis; a threaded groove is formed on the magnetic induction element.

Abstract: A washing machine (100), comprising a support frame (1), the support frame (1) comprising a door support (11); a drum (2) being arranged on the support frame (1) in a manner enabling rotation around the central axis of rotation; a door (3) being arranged on the door support (11) in a manner enabling rotation around the central axis of rotation; and a pushing plate (4), connected respectively to the door (3) and the drum (2) when in a first state, and being spaced apart from at least one of the door (3) and the drum (2) when in a second state.

Abstract: A good-orientation, low-drift micro-movement subassembly for angle adjustment as a precise driving screw for angle adjustment, comprising a slotted knurling handle, a turnbuckle and a central cylindrical shaft. The invention is precise for linear displacement, good orientation, low-drift, stable and reliable adjustment, which can be used for a variety of precision-oriented, small drift, precision micro-angle adjustment of the drive screw.

Abstract: A gear shift linkage mechanism includes a gear shift linkage assembly and a spherical bowl for connecting to a gear shift rocker arm. The gear shift linkage assembly includes a connecting member, a gear shift linkage, a first elastic element, and a second elastic element. One end of the connecting member is connected with the spherical bowl, one end of the gear shift linkage is movably configured in the cavity. One end of the first elastic element presses against the limiting portion, and another end of the first elastic element is supported on the cavity. One end of the second elastic element presses against the limiting portion, and another end of the second elastic element is supported on the first through hole. The gear shift linkage mechanism efficiently improves the buffering and damping effect of the gear shift linkage assembly, and thus prevents damage of the transmission.

Abstract: A microchannel heat exchanger structure with a nozzle and a working method thereof. The microchannel heat exchanger structure with a nozzle, includes a first heat exchange portion, a second heat exchange portion, and at least one nozzle portion between the first heat exchange portion and the second heat exchange portion, the first heat exchange portion having a high-pressure heat exchange channel, a first micro-fin array being provided inside the high-pressure heat exchange channel, and the second heat exchange portion having a low-pressure heat exchange channel, the high-pressure heat exchange channel and the low-pressure heat exchange channel being in communication through at least one nozzle disposed in the nozzle portion. The heat exchanger structure has a good heat exchange effect and can achieve a better heat flux during heat exchange.

Abstract: The disclosure provides a magnetic suspension type quasi-zero stiffness electromagnetic vibration isolator with active negative stiffness. The disclosure relates to the technical field of vibration control. The disclosure can selectively realize passive negative stiffness and active negative stiffness by adjusting the control mode of a controller. By adopting an amplifying mechanism and DIESOLE type electromagnets, the bearing capacity of the vibration isolator is further increased, and the disclosure is suitable for the field of ultra-low frequency heavy load vibration reduction and isolation. The displacement state of a negative stiffness mechanism can be measured in real time according to a sensor, and by means of cooperation of the controller and a driver, active negative stiffness is realized, real-time linear negative stiffness is realized, the multi-stable phenomenon is avoided, and complex dynamic phenomena such as jumping during working of the vibration isolator are prevented.

Abstract: A radio communication apparatus includes: a first radio frequency subunit, configured to modulate a third analog baseband signal into a third carrier signal, and send the third carrier signal to a first switch; a second radio frequency subunit, configured to modulate a fourth analog baseband signal into a fourth carrier signal, and send the fourth carrier signal to a second switch; the first switch; the second switch; and the first duplexer shared by a first switch and a second switch, configured to receive the third carrier signal from the first switch, receive the fourth carrier signal from the second switch, filter the third carrier signal and the fourth carrier signal to combine the third carrier signal and the fourth carrier signal to obtain a second carrier aggregation signal, and input the second carrier aggregation signal to a first antenna.

Abstract: The present disclosure relates to a DBB forced sealing valve and an operating mechanism, including a valve body, a valve seat, a valve core arranged in the valve body, upper sealing member driving part and lower sealing member driving part arranged in the valve body and located on either side of the valve core, and the sealing members arranged between the valve seats and the upper sealing member driving part and the lower sealing member driving part. Wherein, the upper sealing member driving part and the lower sealing member driving part can move along the rotation axis of the valve core, and the upper sealing member driving part and the lower sealing member driving part drive the sealing members to press against or to retract from the valve seats.

Abstract: Disclosed herein are tissue treatment products that have been bound to at least one chelating agent. Also disclosed are tissue treatment products that have been functionalized with at least one metal and/or at least one metal-binding protein. The tissue treatment products can have antimicrobial properties and/or factors that promote or enhance native cell migration, proliferation, and/or revascularization after implantation into a subject. Also disclosed are methods of making and using the tissue treatment products. The tissue treatment products can be implanted into a tissue in need of repair, regeneration, healing, treatment, and/or alteration and can promote or enhance native cell migration, proliferation, and/or revascularization.

Abstract: A radio communication apparatus includes: a first duplexer, configured to receive a first carrier aggregation signal from a third switch, filter the first carrier aggregation signal to divide the first carrier aggregation signal into a first carrier signal and a second carrier signal, input the first carrier signal to a first switch, and input the second carrier signal to a second switch. The first carrier signal and the second carrier signal are downlink signals. The apparatus further includes: a radio frequency unit, configured to receive the first carrier signal from the first switch, receive the second carrier signal from the second switch, and demodulate the first carrier signal and the second carrier signal.

Abstract: There is provided a data processing apparatus to perform an operation on a first matrix and a second matrix. The data processing apparatus includes receiver circuitry to receive elements of the first matrix, elements of the second matrix, and correspondence data to indicate where the elements of the first matrix are located in the first matrix. Determination circuitry performs, using the correspondence data, a determination of whether, for a given element of the first matrix in column i of the first matrix, a given element of the second matrix occurs in row i of the second matrix. Aggregation circuitry calculates an aggregation between a given row in the first matrix and a given column in the second matrix and includes: functional circuitry to perform, in dependence on the determination, a function on the given element of the first matrix and the given element of the second matrix to produce a partial result.

Abstract: A data processor receives a first set of processor instructions for combining a first matrix with a second matrix to produce a third matrix and generates a second set of processor instructions therefrom by identifying values of non-zero elements of the first matrix stored in a memory of the data processor and determining memory locations of elements of the second matrix. An instruction of the second set of processor instructions includes a determined memory location and/or an explicit value of an identified non-zero element. The second set of processor instructions is executed by the data processor. The second set of processor instructions may be generated by just-in-time compilation of the first set of processor instructions and may include instructions of a custom instruction set architecture.

Abstract: The present invention discloses a method for efficiently and mildly reducing ovalbumin allergenicity. The present invention promotes the exposure of the ovalbumin allergenic site to the molecular surface by repeated freezing and thawing pretreatment, and combines transglycosylase and trypsinase for synergistic treatment to reduce the ovalbumin sugar chain and epitope to achieve the purpose of significantly reducing the allergenicity of ovalbumin and egg foods. Compared with other traditional methods such as high temperature and high pressure and other physical means to reduce egg allergenicity, the method significantly improves the specificity and effectiveness of egg desensitization, and minimizes the damage to the nutrition and quality of egg proteins, and is an efficient and mild egg desensitization method. The method has the prospects of being applied to the industrial development of low-allergenicity egg products.

Abstract: The present invention discloses a low cost bio-based full degradable film and preparation method thereof, the ratio of each component in parts by mass of the film is as follows: 15-25 parts of a polyglycolic acid, 25-35 parts of corn starch, 35-55 parts of poly(butylene adipate-co-terephthalate), 5 parts of a compatilizer, 3.75-12.25 parts of a starch plasticizer, 0.5-0.7 part of citric acid, 0.75-1.25 parts of acetyl tributyl citrate, 0.3-0.5 part of maleic anhydride, 0.2 part of antioxidant 164, and 0.2 part of 2-(2?-hydroxyl-5?-methylphenyl)benzotriazole. The low cost bio-based full degradable film provided by the present invention has a bio-based content, which can reach 30% or more, a lower cost, and a tensile strength exceeding a traditional PE thin film, and has very important significance for solving the problem of “white pollution” and promoting the popularization and application of full biodegradable materials.