86results about How to "Obvious advantages" patented technology

The invention provides an intelligent analysis method for a hydrological monitoring data communication protocol based on similarity measurement, which comprises the following steps of: processing message data of the hydrological monitoring data communication protocol into text data in combination with a text classification thought, and performing template matching on the message data to be analyzed and a generated protocol template by adopting a similarity measurement scheme so as to obtain an intelligent analysis result of the hydrological monitoring data communication protocol. And the analysis of the message data is realized. The method comprises the following steps: carrying out word segmentation processing on message data according to semantic information of a protocol; adding position information of different segments into the data after word segmentation, and binding protocol semantics with the data to form a word segmentation effect in text classification; mining the protocol message by using word frequency-inverse document frequency (TF-IDF) to obtain a weight matrix of a high-frequency field as a feature matrix of the message; generating a protocol type template and a protocol field template by using the feature matrix; and finally, realizing accurate matching of the message and the template according to a similarity measurement rule, and realizing intelligent analysis of the protocol message according to a matching result of the template.

The invention relates to the field of bolt detection, in particular to an automatic bolt looseness detection and alarm device. The device main body comprises a power supply assembly and a plurality of alarm assemblies, each alarm assembly comprises an indicating lamp and a buzzer alarm, the indicating lamps are used for detecting looseness of bolts and nuts, the buzzer alarms are used for detecting breakage of the bolts, and the power supply assembly comprises a solar panel. According to the invention, the electromagnetic induction principle and the circuit on-off change are utilized to realize the automatic detection and alarm functions of the two key states of bolt loosening and fracture, and a reliable monitoring means is provided for guaranteeing the safe operation of facilities and equipment. Different power supply connection modes are designed for fixed parts made of different materials, higher universality and applicability are achieved, limitation of the material properties of the fixed parts is avoided, and the application range is wider. A power supply assembly composed of a solar panel, a charging controller and a storage battery is adopted, clean energy solar energy is used for supplying power, and external power supplies such as an external mains supply are not needed.

The invention discloses a bearing seat machining clamp which comprises a rack, the rack is of a cylindrical body structure composed of a plurality of vertical faces, a positioning reference block used for containing a bearing seat is arranged in the center of the side of the rack, and first clamping devices are arranged at the positions, located at the two ends of the positioning reference block, of the rack. And the first clamping device is used for clamping and limiting the bearing seat. The first clamping device comprises a driving piece and a lock head, a first connecting block is fixed to the driving piece, the first connecting block is rotationally connected with the lock head through a support, and the output end of the driving piece is connected with the end of the lock head through a second connecting block. Workpieces can be installed and clamped at four stations at the same time, the clamping device is suitable for flexible machining of horizontal machine tool equipment with a rotary workbench, time and labor are saved, fixing is convenient and efficient, safety is high, and the clamping device has obvious advantages compared with a traditional tool.

The invention relates to the field of fiber technology, and in particular to a method for preparing an antibacterial and anti-mite intelligent constant temperature fiber, comprising the steps of preparing a soybean protein solution, preparing a temperature regulating solution, preparing a mixed spinning solution, pre-spinning injection, spinning and post-processing. The antibacterial and anti-mite intelligent constant temperature fiber prepared by the invention has better softness and hand feel than the same type of added functional fibers in the industry due to the addition of soybean protein isolate, and has obvious advantages. The melting enthalpy is 44.5-55.6 J / g, the crystallization enthalpy is 42.4-53.1 J / g, and the fiber has better constant temperature performance. The fiber has an antibacterial rate of more than 98% against Staphylococcus aureus, more than 94% against Escherichia coli, and more than 95% against Candida albicans, and has a very strong anti-mite effect, with a detection rate of 0 dust mites and an avoidance rate of ≥99%.

A process for manufacturing compact coils of ultra-fine grained martensite-free steel bars, the process comprising the following phases: a) rolling a billet by means of a roughing mill (1) of the steel bar; b) performing at least one first cooling stage (2) so that the steel bar has a surface temperature higher than the martensite start temperature (Ms) and at least one first equalization stage in air; c) rolling the steel bar by means of at least one intermediate mill (3); d) performing at least one second cooling stage (4) always keeping the surface temperature higher than the martensite start temperature (Ms) and at least one second equalization stage in air; e) rolling the steel bar by means of a finishing mill (5) in the non-recrystallization temperature range, keeping the entire cross section of the steel bar in said non-recrystallization temperature range and wherein the total reduction is between 25% and 50% with respect to the cross section of the steel bar at the inlet of the finishing mill, so as to obtain an ultra-fine grained austenitic matrix; f) winding the steel bar into compact coils by means of at least one winding device (7) so that the ultra-fine grained austenitic matrix transforms into a mixture of ferrite and pearlite. After the winding operation is completed, the compact coils can be conveyed to a storage area by means of a conveying device (8), for example a walking beam, in which the coils are subjected to natural cooling or forced cooling or delayed cooling.

The invention belongs to the technical field of metal separation, and particularly relates to a deep eutectic solvent, a preparation method and application thereof, and a method for selectively extracting lithium from a lithium battery positive electrode material. According to the deep eutectic solvent provided by the invention, nearly 100% selective leaching of lithium is realized in an extremely short time, and Ni, Co and Mn are almost not leached, so that the bottleneck that the rate and the selectivity are difficult to obtain at the same time in a traditional method is broken through; and the process conditions are mild and efficient, are far superior to the traditional process and are more suitable for practical industrial application, and the energy consumption and material consumption are remarkably reduced.

The utility model discloses a high-rigidity half-moon groove tool rest unit of a combined lathe and the combined lathe, belongs to the technical field of numerical control combined lathes, and solves the problems that a traditional linear guide rail feeding structure is large in occupied space, poor in rigidity and unstable in machining quality. The tool rest unit comprises a tool rest body, and a guide groove is formed in the circumferential face of the tool rest body and axially penetrates through the tool rest body. A sliding groove plate matched with the guide groove is arranged in the guide groove. The sliding groove plate is shorter than the guide groove and used for bearing a cutter. And the section of the guide groove is half-moon-shaped. Limiting plates are installed on the portions, on the two sides of a groove opening of the guide groove, of the tool rest body respectively, and the limiting plates are pressed on the sliding groove plates so as to limit movement of the sliding groove plates in the radial direction. Due to the fact that the sliding groove and the sliding groove plate are arranged on the peripheral face of the tool rest body, occupied space is reduced, and rigidity and transmission efficiency of the whole structure are improved. The tool rest unit is matched with a narrow space scene of a multi-spindle lathe, and the machining requirements of high precision and high efficiency are met.

The utility model discloses a rapid round steel butt joint device which is mainly composed of a shell, clamping mechanisms symmetrically arranged at the two ends of the shell and a driving mechanism located in the shell. The clamping mechanism is connected with the shell in a sliding mode through a connecting sliding block and comprises a base fixed to the connecting sliding block, a lower arc-shaped base and an upper arc-shaped base on the base are connected in a hinged and threaded mode, and a clamping screw and an arc-shaped pressing block are arranged to stably clamp round steel. The driving mechanism comprises a driving rack fixed to the connecting sliding block, a driving gear meshed with the driving rack and connected with the driving rack through a rotating shaft, and a rotating disc. According to the device, through the ingenious structural design, on the aspect of butt joint precision, position deviation can be effectively reduced, the butt joint coaxiality of round steel is improved, and the high-end manufacturing requirement is met; in terms of working efficiency, the position of round steel can be rapidly adjusted, and working time is shortened; and in the aspect of safety, the round steel is prevented from sliding off, the device adapts to complex operation environments, and the remarkable application value in industrial production is achieved.

The invention relates to the technical field of enzyme engineering, in particular to a malic enzyme mutant and application thereof. Specifically, the malic enzyme derived from Escherichia coli is subjected to site mutation screening, and results show that after methionine at the 144th site is mutated into isoleucine (M144I), glutamine at the 253rd site is mutated into isoleucine (Q253I), and threonine at the 327th site is mutated into phenylalanine (T327F), the catalytic efficiency and the catalytic activity are obviously improved, which is of great significance to industrial application.

The utility model discloses a multifunctional turn-over pillow which comprises a supporting pillow, an auxiliary pillow and a turn-over cushion, the supporting pillow and the auxiliary pillow are oppositely arranged, a gap is reserved between the supporting pillow and the auxiliary pillow, and the supporting pillow and the auxiliary pillow are detachably arranged in a supporting pillow case and an auxiliary pillow case in a sleeved mode respectively. Connecting rings are sewn at the bottoms of the supporting pillowcase and the auxiliary pillowcase, the two ends of the turning-over cushion penetrate through the connecting rings at the bottoms of the supporting pillowcase and the auxiliary pillowcase respectively, surround the connecting rings by a circle and then are fixed through hook-and-loop fasteners, and when a patient lies on the side on the turning-over cushion, the back leans on the supporting pillowcase, and the side body is supported by the auxiliary pillowcase. The multifunctional turning-over pillow can ensure that the supporting pillow and the auxiliary pillow do not displace when a patient moves the body, and has obvious advantages compared with an existing single-side R-shaped pillow.

The utility model discloses an automatic lubricating device of electric door slide rail, and relates to the technical field of electric door slide rail; the utility model discloses a slide rail, two symmetrical chutes are seted up on the slide rail, the third connecting hole is seted up in the arbitrary one chute, the first installation slot is seted up on the slide rail, the one end of first installation slot inboard wall is close to the third connecting hole and is seted up with the connecting groove, the fixed block is installed in the third connecting hole, the utility model discloses the automatic lubrication through mechanical linkage, and the advantage is remarkable, utilizes the kinetic energy of slider to move to the top, through the force link and drives the piston, rubber bowl pressurization, makes the lubricating oil quantitative extrusion through the connecting hole, does not need manual intervention, can complete lubrication every time and moves, guarantees that the slide rail and the moving block keep good lubrication state continuously, reduces the friction wear, prolongs the life.

The invention discloses a cervical vertebra health care medicine pillow which comprises a pillow inner and a pillowcase, the pillow inner is made of a nanotube material, and tranquilizing traditional Chinese medicine such as a combination of spina date seed (fried) 1, liquorice, rhizoma anemarrhenae, poria cocos and ligusticum wallichii is placed between the pillow inner and the pillowcase. The pillow cover is provided with a zipper. The pillow has numerous advantages, the nanotube pillow inner is precisely matched according to seven sections of the cervical vertebra, the curvature is maintained, muscle tension and joint abrasion are reduced, and the layered design enables traditional Chinese medicine to continuously act during sleeping and intervene in sub-health of the cervical vertebra in a multi-dimensional mode. In the traditional Chinese medicine formula, spina date seed has the effects of nourishing blood and tranquilizing mind, liquorice has the effects of harmonizing, rhizoma anemarrhenae has the effects of clearing heat, poria cocos has the effects of calming heart and ligusticum wallichii has the effects of promoting circulation. The zipper design is convenient for checking and maintaining the pillow core and the traditional Chinese medicine, replacing the traditional Chinese medicine to prolong the service life, cleaning and adjusting the pillow core, creating convenient experience for people with sub-health cervical vertebrae, and helping people to relieve discomfort and improve sleep and cervical vertebrae health.

The present invention discloses a label-free multimodal microscopy system suitable for the study of organelle interaction networks, including: Raman channels, phase channels, and fluorescence channels; precision displacement stages; illumination light sources, and multiple lasers; wherein the Raman channel includes a Raman spectrometer, a 2D galvanometer, and a 1D galvanometer, for providing fast scanning Raman spectral signals; the phase channel is used to record the morphological information of label-free organelles and record phase images. By integrating high spatiotemporal resolution phase technology with fast Raman scanning technology, not only can the morphology of various organelles be rapidly detected, but also the moving organelles can be tracked in real time and their Raman spectral information can be collected, so as to analyze the material exchange between the cell structure and other cell structures. Compared with the existing fluorescence technology, the present invention can simultaneously observe the morphology of various organelles, detect the exchange of various substances in situ, and depict the dynamic change characteristics of the organelle network interaction with minimal interference.

The present invention relates to the technical field of DPF carbon removal, and discloses a carbon removal device for DPF with high carbon load, comprising a diesel oxidation catalyst, a diesel particulate trap, a mixer, a selective catalytic reduction catalyst and an ammonia escape trap connected in sequence, the inlet of the diesel oxidation catalyst is also provided with an out-of-cylinder hydrocarbon nozzle, and also includes a thermal management control device, the inlet of the diesel particulate trap is provided with a first temperature sensor connected to the thermal management control device, the thermal management control device controls the original exhaust temperature according to the data of the first temperature sensor, so that the inlet temperature of the diesel particulate trap is 380 to 430 degrees Celsius, and the outlet and inlet of the diesel particulate trap are connected with a pressure difference sensor. The present invention also discloses a carbon removal method for a carbon removal device for DPF with high carbon load. The carbon removal device for DPF with high carbon load and the carbon removal method thereof of the present invention greatly reduce the probability of rework when the DPF is seriously blocked, and effectively reduce the time cost and later maintenance cost of the terminal customers.

This invention discloses an adaptive PC-Kriging reliability analysis method and system based on active learning. The method includes: using weighted clustering to obtain uniformly distributed first candidate samples from a pre-generated MC sample pool and constructing an initial PC-Kriging model; using interval reduction to select samples and construct a new sample pool, dividing the new sample pool into two sub-sample pools: a safe domain and a failure domain; for each sub-sample pool, weighted clustering is used again to select uniformly distributed second candidate samples; using the second candidate samples distributed in the failure domain and the safe domain, crossing points are constructed; the constructed crossing points are used as new experimental points to iteratively update the PC-Kriging model; convergence is determined and the results are output. The technical solution of this invention focuses on key regions through interval reduction and updates the model based on crossing points, which can more accurately approximate the limit state surface, reduce the number of experimental points, improve prediction accuracy, and is more efficient in utilizing computational resources.

The utility model relates to bridge cable protection structure field discloses a kind of fire-resistant protective structure of bridge cable system, including heat insulation layer, fire-retardant sealing layer and protective layer sequentially arranged from inside to outside, and high-temperature-resistant adhesive glue is equipped between the heat insulation layer with the bridge cable. The heat insulation layer is excellent in thermal stability, and excellent in heat insulation effect;The fire-retardant sealing layer is formed by basalt fiber cloth or high-silica cloth and fire-retardant sealant, and the thickness of fire-retardant sealing layer is 3-6mm, and it is good in high-temperature resistance, fire resistance, vibration resistance and sealing property, and stable in structure;The high-temperature-resistant adhesive glue has excellent temperature resistance, adhesion, moisture resistance and vibration resistance. The protective layer uses silicone high-temperature paint, to further enhance the durability of protective structure. The fire-resistant protective structure of the bridge cable system has clear function, stable performance, easy construction, excellent heat insulation, fireproof and durable performance, and obvious comprehensive advantages.

The utility model discloses an intelligent flame positioning and identifying device which comprises a shell, a monitoring module is arranged below the shell, a display module is arranged on the side face of the shell, a data transmission module is arranged in the shell, and the monitoring module and the display module are both electrically connected with the data transmission module. The monitoring module comprises a shell, a light projection module and a sensing module, and the light projection module can collect fire image data of parking spaces on the two sides of a road. The display module is used for displaying remaining parking space information, and the sensing module can project empty parking spaces and indicate parking. According to the device, through cooperation of multiple modules, safety is improved, and convenience is brought; the monitoring module accurately captures a fire image, and early warning and linkage of fire fighting equipment are performed through the data transmission module; and the display module is matched with the sensing module to display the parking space information in real time and guide parking. The integrated structure is convenient to install, the cost is reduced, data support can be provided for a smart city, and practical value and market potential are achieved.

The present application belongs to the technical field of water conservancy and hydropower engineering closure construction, and particularly relates to a kind of embankment closure method based on integral assembly type double ridge closure bottom protection structure.The present application precast and accurately throw the integral bottom protection structure formed by rigid connection of bottom protection section and double ridge section in dry season of a year before closure, with standardized reinforced gabion as basic unit, adopt double connection inside and outside to form continuous plate type whole, with high impact resistance and stone blocking foot capacity.Through particle size and impact distance calculation, throw test, GPS joint positioning to realize accurate underwater throwing.After bottom protection construction is completed, embankment pre-advance is implemented in dry season of next year, and large stone and reinforced gabion are continuously thrown in closure stage, which can improve the stability of throwing material, prevent embankment collapse, and realize safe and rapid closure.The present application can solve the problems of traditional dispersed bottom protection, such as easy loss, low precision, interference with flood discharge, etc., and greatly improve the safety and efficiency of closure under complex riverbed conditions.

The invention discloses a method for calculating a real-time angle of train operation in the field of heavy haul railway freight, which comprises the following steps: acquiring positioning data of a train in real time, and determining the positioning data as first positioning data which comprises first latitude and longitude data, first operation speed and first timestamp information; according to preset operation line data, determining the next positioning data of the train as target positioning data, the target positioning data including target latitude and longitude data and target timestamp information; determining a target operation angle of the train according to the first positioning data and the target positioning data; according to the target running angle of the train, a train model in a map engine is controlled to run to a target position corresponding to the target positioning data within preset time, and the preset time is the difference between the target timestamp information and the first timestamp information. Therefore, the running angle of the train can be obtained more accurately, and the train running visualization effect is improved.

The invention discloses a modular panel based on a composite magnetic thin film, which belongs to the technical field of decorative panels and comprises a base layer, a first bonding layer, a magnetic functional layer, a second bonding layer and a surface layer which are sequentially arranged from bottom to top, the base layer and the magnetic attraction function layer are fixed through a first bonding layer, and the magnetic attraction function layer and the surface layer are fixed through a second bonding layer; the magnetic attraction functional layer comprises a base material and soft magnetic powder, and the magnetic attraction functional layer is a sheet-shaped continuous magnetic composite material film; and the soft magnetic powder is subjected to high-temperature passivation treatment. Through systematic innovation of the continuous soft magnetic functional layer, the integrated composite structure and process adaptation, the core problems that an existing magnetic panel is poor in flatness, uneven in magnetic force distribution, low in production efficiency, insufficient in reliability and single in adaptability are fundamentally solved. And the comprehensive advantages of high flatness, uniform magnetic attraction, efficient production, long acting, reliability and multi-scene adaptation are realized.

The anti-recoil device comprises a shell, a first braking cavity, a second counter-recoil cavity and a third counter-recoil cavity, the shell is installed at the top of a gun barrel, the first braking cavity is formed in the middle of the shell, and the second counter-recoil cavity and the third counter-recoil cavity which are located on the left side and the right side of the first braking cavity respectively are formed in the shell. Traveling pistons are arranged on the inner sides of the second counter-recoil cavity and the third counter-recoil cavity; a pull rod piston is arranged on the inner side of the first braking cavity, a first recoil valve and a first counter-recoil valve are arranged between the first braking cavity and the second counter-recoil cavity, a second recoil valve and a second counter-recoil valve are arranged between the first braking cavity and the third counter-recoil cavity, and inclined partition plates are arranged on the inner side of the second counter-recoil cavity and the inner side of the third counter-recoil cavity. The anti-recoil device of the artillery is arranged at the top of the artillery barrel, so that the torsion of the artillery carriage during recoil and counter-recoil of the artillery is reduced, the deviation degree of an aiming line is reduced, and the continuous shooting of the artillery is facilitated.

The invention discloses a long-term sealing pipeline stress reduction device and a safety performance detection system, and relates to the technical field of pipeline stress reduction. The telescopic structure of the pipeline stress reducing device comprises a short pipe, a sealing sleeve assembly welded with the short pipe into a whole and a telescopic pipe arranged in the short pipe and the sealing sleeve assembly in a penetrating mode, the two ends of the short pipe and the two ends of the telescopic pipe are welded to the pipeline, and the telescopic pipe stretches out and draws back along with thermal expansion and cold contraction of the pipeline so as to reduce the thermal stress of the pipeline and ensure safe operation of the pipeline. The anti-falling clamping ring is welded to the inner end of the telescopic pipe, leakage accidents caused by pipeline separation due to excessive extension of the telescopic pipe are avoided, long-term sealing can be achieved after one-time installation, and maintenance is not needed.

This application relates to the technical field of machining mechanical parts, and more particularly to a fixture for plate-shaped workpieces, including a support platform and a clamping mechanism disposed on the support platform. The clamping mechanism includes: a first clamping assembly for clamping the edge of the plate-shaped workpiece and a second clamping assembly for abutting the bottom of the workpiece. The first clamping assembly includes: a first clamping cylinder, a first clamping block, and a rotating shaft. The first clamping block is arranged parallel to the platform surface of the support platform. The first clamping cylinder is vertically fixed to the platform surface of the support platform. The piston rod of the first clamping cylinder is connected to the first clamping block through the rotating shaft, so that the first clamping block can rotate bidirectionally around the shaft while rising and falling. The initial position of the first clamping block is set along the length direction of the platform surface of the support platform, and the angle formed by bidirectional rotation is 45°. This structure can adjust the clamping position of the clamping component on the plate-shaped mold, increase the clamping contact area between the clamping component and the edge of the plate-shaped mold, thereby enhancing the clamping stability of the workpiece.

The invention belongs to the field of optical fiber corollary equipment, and discloses a Y-type three-phase arc high-voltage discharge system for an optical fiber fusion splicer, a ZYNQ development board generates two signals which are respectively used as driving signals of switching tubes of a Boost circuit module and a Flyback circuit module, the ZYNQ development board boosts an input direct-current voltage through the Boost circuit module, and outputs the boosted direct-current voltage to the Flyback circuit module; the system comprises three groups of Flyback circuit modules, the three groups of Flyback circuit modules are boosted and then serve as input voltages of the three groups of Flyback circuit modules, three groups of three-phase direct-current high voltages with the same voltage amplitude and the phase difference of 120 degrees in pairs are obtained, the three groups of Flyback circuit modules are connected with a three-phase discharging device, the three-phase direct-current high voltages break down air to form three-phase Y-shaped electric arcs, and optical fibers are welded through radiant heat zones generated by the electric arcs. The heat production power is high, so that welding of large-diameter optical fibers is facilitated; the temperature in the thermal radiation field is radially and symmetrically distributed, the center of the temperature zone is uniformly heated, and the heating effect is good.

The invention relates to a method for modifying a titanium-based porous transmission layer by using a supercritical fluid technology, and belongs to the technical field of electrochemistry. The titanium fiber is modified by using a supercritical fluid technology, so that the noble metal can be uniformly and compactly deposited on a base material, and therefore, a high-quality noble metal coating on the surface of the titanium fiber is obtained, the corrosion resistance of the titanium fiber is improved, the oxygen content of the titanium fiber felt is reduced, and the electric conductivity of the titanium fiber felt is improved; and meanwhile, the noble metal layer plated on the surface of the titanium fiber has catalytic activity, so that the loading capacity of the whole electrolytic cell catalyst can be reduced. Compared with a plating layer obtained through other methods, the plating layer obtained through the method is more uniform in thickness, higher in binding force and not prone to falling off, and the prepared titanium fiber felt is lower in electrical resistivity and more resistant to oxidation.

The utility model provides a kind of storage bin for storing straw biomass, including warehouse wall, door body, warehouse floor and roof. Warehouse wall side is equipped with air inlet and installs air guide machine, air guide machine is connected with the air outlet pipeline embedded in floor, including main air pipe and transverse air distribution pipe, realize three-dimensional ventilation;Roof is equipped with multiple unpowered turbine roof ventilator, bottom has dustproof grille, accelerates air flow, discharges humid hot gas. Track-type crown block is arranged under roof truss, including movable front and rear moving seat, transverse moving seat and winch grab, grab is driven arc-shaped grab hand by pneumatic cylinder, realizes mechanized loading and unloading. Warehouse floor is divided into unloading area and storage area, and the storage area is provided with a label area and a reflective identification belt. The outer side of the air inlet has a detachable filter screen, and a 360-degree panoramic camera is arranged on the inner side of the roof and connected with the central control console. The application realizes active and passive coordinated ventilation, mechanized loading and unloading and monitoring management, effectively inhibits mold growth and improves storage efficiency.

The invention relates to a rare disease identification method and system based on multi-scale vision-language prompt multi-instance learning, and the method faces a full-view digital pathological image (WSI), and introduces the prior knowledge of the pathological field under the weak supervision condition of only using a slice-level label, so as to identify the rare disease. Constructing a multi-scale vision-language collaborative prompt mechanism: generating descriptive text prompts corresponding to image blocks of different scales by utilizing a large language model, designing a prototype-guided image block decoder to aggregate massive image block features, and meanwhile, realizing cross-modal alignment in combination with a context-guided text decoder; the method simulates the diagnosis process of a pathologist, achieves high-precision classification under small samples, remarkably improves the recognition accuracy of rare diseases, has good cross-center generalization ability, supports interpretable evidence output, does not need large-scale data labeling or de novo pre-training, and facilitates clinical rapid deployment.

This invention belongs to the field of catalyst preparation and application technology, and discloses a method for preparing sulfur-bridged bimetallic alkyne complexes and their application in the dehydrogenation coupling synthesis of 1,4-diyne. The method uses thiols or thiophenol salts as bridging ligands, with each metal center coordinated with a cyclopentadienyl group or a substituted cyclopentadienyl group. This invention achieves coordination activation of the terminal alkyne by controlling the oxidation state of the metal center and altering the bonding mode of the terminal alkyne at the metal center. In this system, the sulfur-bridged ligand not only assists the metal center in activating the terminal alkyne but also stabilizes a key intermediate in the catalytic process. Subsequently, the coordinated-activated terminal alkyne undergoes a reductive elimination process to generate 1,4-diyne. This reaction can be carried out in a temperature range of -100℃ to 25℃, with a reaction time of 0.5 to 48 hours. This method can synthesize a series of novel sulfur-bridged bimetallic alkyne complexes with high yield and high selectivity, providing a novel catalytic system for the activation of C-H bonds in terminal alkynes mediated by inexpensive metals and the further synthesis of 1,4-diyne.

The invention belongs to the field of polyurethane hybrid glue, and particularly relates to wide-temperature-range polyurethane hybrid glue and a preparation method and application thereof.The wide-temperature-range polyurethane hybrid glue comprises a component A and a component B. When the component A and the component B are mixed, the NCO / OH molar ratio is controlled to be 1.05-1.2: 1; the component A is prepared from the following components in parts by weight: 10 to 30 parts of polyether polyol, 10 to 30 parts of castor oil modified polyol, 5 to 20 parts of hydroxyl-terminated polybutadiene, 1 to 8 parts of chain extender, 20 to 40 parts of filler, 2 to 6 parts of fumed silica, 1 to 3 parts of water absorbent, 1 to 3 parts of coupling agent and 0.1 to 0.5 part of catalyst; the component B is prepared from the following components in parts by weight: 10 to 30 parts of hydroxyl-terminated polysiloxane, 20 to 40 parts of isocyanate, 15 to 40 parts of filler and 2 to 5 parts of fumed silica. The wide-temperature-range two-component polyurethane structural adhesive prepared by the invention can be applied to new energy automobile power battery bonding and structural bonding.

This invention relates to the field of traditional Chinese medicine, specifically to a traditional Chinese medicine composition for treating insomnia, characterized by being made from the following raw materials in parts by weight: 5-45 parts of stir-fried jujube seed, 3-35 parts of cypress seed, 5-30 parts of poria cocos, 5-30 parts of mulberry, 3-18 parts of dried plum, 1-10 parts of costus root, 3-18 parts of privet fruit, 2-16 parts of lycium chinense root bark, and 2-16 parts of fleeceflower stem. This invention also provides a traditional Chinese medicine compound preparation for treating insomnia and its application.