849results about How to "Reduce harm" patented technology

The invention relates to multifunctional self-adaptive laser metal 3D printing equipment and a control method thereof.The device comprises a spray head bottom plate and a laser cladding spray head, the laser cladding spray head comprises a spray nozzle used for outputting powder and a pipeline connected to the spray nozzle and used for conveying the powder, and a first converging assembly is installed on the spray head bottom plate; the end, away from the nozzle, of the pipeline is arranged on the inner side of the first gathering assembly, the powder is magnetized when passing through the first gathering assembly in the pipeline, and a gathering processing assembly used for repelling the magnetic powder is arranged on the outer side of the nozzle. Through the design of the first gathering assembly and the gathering processing assembly, powder is magnetized through the first gathering assembly during conveying, then the magnetized powder and the gathering processing assembly generate like-pole repulsion acting force when the powder is sprayed out of the nozzle, the powder is promoted to be gathered together to form a powder beam, powder divergence and irregular arrangement are reduced, and the powder quality is improved. And the position precision and the forming quality and precision of powder conveyed to the molten pool are improved.

The invention discloses a balloon catheter for releasing medicine in a human body cavity. The balloon catheter comprises an outer balloon and an inner balloon located in the outer balloon. The diameter of two ends of the outer balloon is larger than that of the middle; a plurality of rows of semi-through holes are formed in the outer balloon, each row of inner semi-through holes are formed in the longitudinal direction of the outer balloon, and a cutting mark is arranged between every two adjacent semi-through holes in each row; and the inner balloon is a three-stage expansion balloon. The double-layer balloon structure is adopted, in the process that the internal pressure of the inner balloon is gradually increased to push the outer balloon to be gradually expanded, two treatment means of medicine spraying and dilation are executed at the same time, and therefore the treatment effectiveness is improved; the use efficiency of the medicine can be ensured while the medicine can accurately act on the focus; compared with an existing treatment means, the application is wider in application range and non-invasive in treatment, foreign matter does not need to be implanted, an instrument does not need to enter a human body cavity for multiple times, and discomfort of a patient during treatment can be greatly reduced.

The invention relates to the field of soil monitoring, and discloses a soil water seepage early warning device for geotechnical engineering, comprising a penetration tube, of which a plurality is provided; a pumping mechanism, which is arranged in the penetration tube, and the plurality of pumping mechanisms are connected in sequence; an embedding mechanism, which is arranged in the penetration tube, of which a plurality is provided; and a packaging cover, which is connected to the topmost penetration tube, and one side of which is connected to an alarm mechanism. The invention can adapt to monitoring at different depths and different work needs, and can realize multi-point monitoring and early warning display, thereby ensuring the stability and timeliness of the monitoring process and ensuring the progress of the monitoring.

The invention discloses an automatic experiment method capable of covering more reaction types, and belongs to the technical field of chemical synthesis. The unit operation is divided into material transmission (solid-liquid-gas feeding), heat transfer (evaporation and condensation), treatment processes (distillation, extraction and adsorption) and thermal processes (temperature, pressure and liquefaction) according to chemical operation units. All equipment and mechanisms are operated, the accuracy of feeding, reaction and the like can be kept, and the conditions of cross contamination and work errors are reduced; the device has the advantages that the device is simple in structure and convenient to operate, harm to experimenters caused by toxic substances can be effectively reduced without manual operation, all-weather use can be achieved through programs and equipment, a Python instruction can be directly copied and used, different reactants can be prepared according to different requirements, and compared with labor, the device has the advantages that the cost is lower, and benefits are higher.

The invention discloses Burkholderia gladioli HM-72 and application thereof, the Burkholderia gladioli HM-72 is preserved in China Center for Type Culture Collection on July 13, 2023, the preservation address is Wuhan University, Wuhan, No. 299, eight road, Wuchang District, Wuhan, Hubei, and the preservation number is CCTCC NO: M20231291. The strain is high in Pb stress resistance, and has the capability of partially dissolving phosphorus and producing siderophores. After the strain is applied to the Pb-polluted soil, the migration rate of Pb can be improved, the removal of Pb in the soil is accelerated, the Pb is accumulated in the overground part of the enrichment plant, the problem of repairing the lead pollution of the soil is solved, meanwhile, the strain can inhibit the growth of pathogenic fungi, the growth promoting and bacteriostasis characteristics of the strain can provide favorable conditions for the growth of the enrichment plant in a high-lead environment, and the application prospect is wide. The biomass accumulation is promoted, and the method has an application prospect in heavy metal polluted environment restoration.

The invention belongs to the technical field of power transmission line inspection, and discloses an intelligent bird accidental collision prevention device and method for an overhead line. The method comprises the following steps: collecting a video stream of bird activities around a power transmission line in a visual range; intercepting the video stream into a plurality of to-be-recognized pictures according to frames, and recognizing whether bird images exist in the to-be-recognized pictures or not; when the bird image is recognized, a first control signal is sent out, otherwise, a second control signal is sent out; when the first control signal is received, the bird blocking module is started to emit ultraviolet light beams to block birds; and in the second control signal, the bird blocking module is closed to save power. In the prior art, an anti-bird-mistaken-collision warning mark or warning ball is installed on a ground wire or a ground wire, power failure is needed to install the anti-bird-mistaken-collision warning mark or warning ball, the anti-bird-mistaken-collision warning mark or warning ball is limited by the fact that a power failure plan is difficult to arrange, and compared with an installation device on an iron tower, the risk coefficient of the installation device on the wire is greatly increased, and the problem can be effectively solved by adopting the anti-bird-mistaken-collision warning mark or warning ball. The effects of protecting rare birds, improving operation safety and providing message results are achieved.

The invention discloses a segmented self-destruction rain enhancement and hail suppression rocket controlled by a time schedule controller, and relates to the technical field of artificial rain enhancement and hail suppression rockets. The device comprises a catalysis bin assembly, an engine assembly and an empennage assembly, and the catalysis bin assembly, the engine assembly and the empennage assembly are connected through reducing sleeve assemblies. An explosion self-destruction device is adopted as a safe landing device, a segmented self-destruction device is arranged in a rocket body engine and a tail segment assembly in advance, a time schedule controller outputs an ignition signal according to binding information, an empennage assembly, an engine assembly and a catalytic bin assembly are exploded into floccules not larger than 100 g and fall onto the ground, self-destruction of all the assemblies is reliable, and the safety of landing is guaranteed. The rocket body wreckage preventing device can effectively reduce damage of rocket body wreckage to personnel, buildings, farmlands, livestock and the like, any one of the ignition loops of the time schedule controller does not affect performance of other loops during working, fire spurting is avoided, space is saved, and the function is reliable.

The invention relates to the technical field of building construction equipment, in particular to a steel bar cutting device for buildings. The reinforcing steel bar cutting device for the building is provided with a safety baffle and has an auxiliary limiting function to prevent the reinforcing steel bars from cracking. A steel bar cutting-off device for construction comprises a steel bar cutting-off machine, the steel bar cutting-off machine is provided with a fixed cutter holder and a movable cutter holder, the movable cutter holder is controlled through a rotary control rod, the steel bar cutting-off machine further comprises a supporting seat, an auxiliary clamp a, an auxiliary clamp b and the like, the supporting seat is arranged on the steel bar cutting-off machine, and the end face of the supporting seat is consistent with the horizontal height of the fixed cutter holder and the horizontal height of the movable cutter holder. The auxiliary clamp a and the auxiliary clamp b are oppositely connected to the supporting base in a sliding mode. After a steel bar is put into the steel bar cutting machine, the rear end of the steel bar can press the conical bearing platform to move downwards, the conical bearing platform pushes the transmission block to move back to back, then the safety door is driven by the transmission assembly to move oppositely, and the safety door can block the steel bar and prevent the steel bar from cracking to injure workers when the steel bar is cut into sections.

The invention discloses a convenient-to-adjust welding workstation for hardware machining, and relates to the technical field of adjusting welding, the convenient-to-adjust welding workstation for hardware machining comprises an equipment frame, a welding mechanism is fixedly mounted on the outer wall of the equipment frame, a first motor is fixedly mounted on the surface of the equipment frame, and the convenient-to-adjust welding workstation for hardware machining further comprises a clamping device; wherein the clamping device comprises a rotating rod, a fixing plate, a rotating pipe, an electric push rod, a clamping plate, a large gear, a second motor, a connecting rod, a circular plate and a small gear, and the rotating rod is fixedly installed at the output end of the first motor. The hardware is fixed in the welding process, the situation that the hardware is damaged due to the fact that the hardware shakes in the welding process and falls off can be prevented, meanwhile, the non-welded side is rotated, the hardware can be adjusted to the optimal position more easily, and unnecessary torsion and stretching are reduced.

The utility model relates to a zero-gravity seat backrest collision energy absorption locking mechanism which comprises a backrest framework, a backrest connecting plate installed on the backrest framework and an angle adjuster installed on the backrest connecting plate, a fixed disc of the angle adjuster is installed on the backrest connecting plate, and a movable disc of the angle adjuster is connected with a cushion framework through a backrest energy absorption locking mechanism. The backrest energy absorption locking mechanism comprises an unlocking support connected with the recliner movable disc, the unlocking support is meshed with the rotating support, the cam locking piece drives the rotating support to be separated from the unlocking support, the exploder drives the cam locking piece to rotate and unlock, the pull wire is connected with the exploder and the cam locking piece, and the energy absorption friction disc is used for unlocking after a vehicle collides. The blocking point limiting mechanism is used for preventing the unlocking bracket from reversely rotating due to inertia force; the backrest energy-absorbing locking mechanism has the advantages that when the seat is collided at a zero-gravity posture position, the backrest can quickly return, so that the restraint protection on passengers is improved, and the injury caused by collision is reduced.

The invention discloses a cisatracurium besilate content testing method which comprises the following steps: respectively weighing a test substance and a reference substance in a measuring flask, adding hydrochloric acid for dissolving and metering a volume to a scale, shaking up to prepare a corresponding solution, finally, measuring the solution according to an ultraviolet-visible spectrophotometry, measuring absorbance at a place of a maximum adsorption wavelength of 280nm, and calculating the content of cisatracurium besilate according to an anhydrous substance. According to the cisatracurium besilate content testing method, the solution is simply and conveniently prepared, no organic solvent is used, and the pollution to the environment and the harm to a human body are small. The cisatracurium besilate content testing method is higher in testing speed, and the time of testing each batch of products in average only needs 30 min. A place of a maximum adsorption wavelength of 280 nm is selected, so that the testing accuracy is ensured. The cost of a reagent used in a process of checking each batch of samples does not exceed 20 yuan; the testing cost of each batch of samples by adopting a high-performance liquid chromatography method is not less than 200 yuan, so that the cost of enterprises is greatly lowered.

The utility model discloses an ecological protection device for a side slope containing easily-weathered rocks, which comprises a side slope body, a plurality of lattice beams are poured on the side slope body, anchor rods are arranged at the connection positions of vertex angles of adjacent lattice beams, the anchor rods are embedded into the side slope body, hooks are fixed on the inner sides of the lattice beams, and ecological bags are built in the lattice beams. The ecological bag is covered with a net piece, and the edge of the net piece is hung on the hook and detachably connected with the hook 5. The meshes are fixed to the hook hanging pieces of the lattice beams, the stability of the ecological bags is improved, a detachable device composed of the meshes and the hook hanging pieces facilitates maintenance and replacement of ecological bag vegetation in the lattice beams in the later period, the side slope maintenance cost is reduced, the double effects of reinforcing side slope rock-soil bodies and greening ecology are achieved, and the side slope protection effect is improved. The slope protection structure belongs to green ecological protection, is wide in application range, can be applied to sandy soil, soil slopes and the like with steep rock slope ratios, and particularly has remarkable advantages in slope protection of easily-weathered rock slopes.

The invention relates to the technical field of food processing, in particular to a grape wine or fruit wine fermentation nutritional agent and application thereof. The invention provides a grape wine or fruit wine fermentation nutritional agent which comprises the following components in percentage by weight: 85-99% of glutathione-containing yeast product and 1-15% of cellulose and / or cellulose derivatives. The yeast product and cellulose substances have an adsorption effect, can adsorb harmful substances such as medium-chain fatty acid generated in the yeast fermentation process, provides crystal nucleuses for release of carbon dioxide and accelerates release of carbon dioxide, and the more carbon dioxide is dissolved in the fermentation process, the more acid is, and the greater the damage to yeast is. According to the invention, the content of solids in the grape juice is improved and a carrier is provided for uniform distribution of yeast by utilizing the synergistic interaction of a yeast product and cellulose substances, and meanwhile, the fermentation nutritional agent disclosed by the invention can reduce the damage of harmful substances generated in the fermentation process, improve the fermentation environment and improve the fermentation effect.

The invention specifically discloses a control method and system for a zero-gravity seat, and the method comprises the steps: transmitting a pre-collision triggering signal and pre-collision time to a seat safety controller when a vehicle intelligent driving control system senses that a vehicle will be pre-collided; setting safety positions of different grades for the seat, obtaining the driver form, and determining that the seat returns to the safety position of the corresponding grade according to the driver form; the seat safety controller receives the pre-collision trigger signal and the driver form to determine the seat homing time required for homing the seat from the current position to the safety position; according to the driver form, the pre-collision time and the seat homing time, whether a seat is controlled to be homed through a seat motor or a seat backrest limiting structure is cut off through a firework type triggering device to enable a seat backrest to be rapidly homed is judged. According to the invention, the injury of a driver in an accident can be reduced, and the intelligence and safety of seat control are improved.

The invention discloses a flexible circuit board based on a pure addition method and a manufacturing method thereof. The method comprises the following steps: providing a substrate insulating layer; printing a first conductive layer on one side of the substrate insulating layer according to preset circuit design data to form a semi-finished flexible circuit board; and printing a first protective layer on the first conductive layer of the semi-finished flexible circuit board to obtain a target flexible circuit board. According to the manufacturing method, circuit manufacturing and protective film manufacturing are both achieved through a pure addition method, material reduction of an original base material is avoided, materials such as a dry film or liquid medicine influencing the environment are not applied, damage to the environment can be effectively reduced, and cost can be effectively reduced.

The invention is suitable for the technical field of molecular biology, and provides an application of an SlSYP51 gene and a protein coded by the SlSYP51 gene in regulating and controlling the cold resistance of tomatoes. The nucleotide sequence of the SlSYP51 gene is as shown in SEQ ID No. 1, and the amino acid sequence of the protein coded by the SlSYP51 gene is as shown in SEQ ID No. 2. According to the invention, the SlSYP51 gene is transferred into a tomato plant in an agrobacterium tumefaciens-mediated manner, and the cold resistance of the SlSYP51 overexpression plant is higher than that of a wild tomato plant. After treatment at 4 DEG C for 2 days, compared with SlSYP51 overexpressed plants, leaves of wild tomato plants are obviously withered and curled up, and the damage degree is more serious. Overexpression of the SlSYP51 gene enhances the activity of antioxidant enzyme and improves the cold resistance of tomato plants. The invention discloses a new way for conducting the cold-resistant signal of the tomato, and provides a gene resource for cultivating a new variety of the cold-resistant tomato.

The invention belongs to the technical field of intelligent shoes, and particularly relates to an intelligent anti-falling shoe. The system is composed of a setting module, a recognition module, a reminding and judging module, an uploading and storing module and a positioning and calling module, the setting module inputs basic information of a shoe wearer, and activity areas, activity time and emergency contacts are set in a personalized mode; the recognition module is integrated with a high-precision sensor, accurately recognizes road surface accumulated water, obstacles and road surface unevenness, and automatically sends a prompt to a medical worker when a shoe wearer exceeds a preset range in combination with a set activity area and activity time; by integrating a plurality of module structures, the system has multiple functions of environment recognition, gait analysis, emergency call and the like, and comprehensive protection from prevention to emergency treatment is realized.

The invention relates to a seawater-based delayed cross-linking agent, the seawater-based delayed cross-linking agent is a poly (ammonia boron) cross-linking agent, and the poly (ammonia boron) cross-linking agent is one of a poly (ammonia boron) cross-linking agent I and a poly (ammonia boron) cross-linking agent II; the seawater-based ultra-low-concentration guanidine gum fracturing fluid is prepared from the following components in percentage by mass: 0.20 to 0.35 percent of a vegetable gum thickening agent, 0.20 to 0.40 percent of a seawater-based delayed cross-linking agent, 0.10 to 0.30 percent of a seawater-based cross-linking synergist, 0.05 to 0.10 percent of a pH (Potential of Hydrogen) regulator, 0.05 to 0.10 percent of a cleanup additive, 0.2 to 3 percent of an anti-swelling agent, 0.03 to 0.20 percent of a sterilizing agent and the balance of seawater, according to the invention, the water cost of fresh water can be saved, the transportation cost of transporting fresh water can also be saved, and the effect of saving the cost of fracturing fluid is especially remarkable.

The embodiment of the invention relates to the field of terminal display, and discloses a screen adjustment method and device, equipment and a storage medium, and the method comprises the steps: recognizing the current screen display content, and determining different types of light source regions; acquiring a plurality of physiological feature parameters; determining an eye fatigue value according to the first physiological feature parameter; determining a correlation degree value of the operation behavior and eye fatigue according to the second physiological feature parameter; and when a preset eye fatigue threshold value and / or a preset association degree threshold value are / is exceeded, analyzing an eye fatigue degree, and generating a screen adjustment strategy based on the eye fatigue degree and the light source area. According to the screen adjustment method disclosed by the invention, the problems that the brightness adjustment is inaccurate and the brightness of different light source areas cannot be automatically adjusted in combination with user eye reaction are solved, the brightness is accurately and automatically adjusted in different areas in combination with physiological features, and the stimulation of different types of strong light sources on the screen to eyes is reduced.

The invention relates to a special tool for replacing a current transformer of a switch cabinet. The special tool comprises a transfer trolley, a bearing table is arranged above the transfer trolley, a lifting frame is arranged between the bearing table and the transfer trolley, cross rods are arranged in the lifting frame, the ends of the cross rods are connected with connecting rods, a lifting hydraulic cylinder is arranged between the connecting rods, and the lifting hydraulic cylinder is connected with the bearing table. Rod frames are arranged on the front side and the rear side of the bearing table, a moving plate is arranged between the rod frames, and a clamping mechanism is arranged on the outer side of the moving plate; through the integrated arrangement of the transfer trolley, the lifting frame, the bearing table and other structures, the current transformer can be easily placed in the switch cabinet, the installation and replacement time is remarkably shortened, and the device can be widely applied to different types of switch cabinets and current transformer replacement scenes.

The utility model provides bearing equipment, which comprises a bearing device, a bearing device, a supporting device and a driving device, wherein the upper surface of the bearing device is a bearing surface; and the multiple rows of buffer devices are movably connected with the bearing device and can sequentially move relative to the bearing device, so that the multiple rows of elastic buffer parts on the multiple rows of buffer devices are sequentially located on the bearing face side of the bearing device, and a containing space is formed between every two adjacent rows of elastic buffer parts. When the next cylindrical structure does not roll to the target position on the bearing surface, the elastic buffering part of the column of buffering devices can move to the position between the target position of the next cylindrical structure and the previous cylindrical structure through the movement of the column of buffering devices relative to the bearing device; therefore, the next cylindrical structure can collide with the elastic buffer part after moving to the target position, the probability of damage caused by direct collision between the next cylindrical structure and the previous cylindrical structure can be reduced, and noise can be reduced at the same time.

The invention relates to the technical field of tumor immunotherapy, in particular to a dual-targeting chimeric antigen receptor, a recombinant expression vector, an anti-tumor natural killer cell and application, and provides a PD1-DAP10-41BB-P2A-NKG2D-Ig4-CD28-41BB-CD3 zeta fusion receptor.The dual-targeting chimeric antigen receptor can target PD-L1 on the surface of a tumor cell, can also recognize NKG2DLs and can be used for preparing anti-tumor natural killer cells. The broad spectrum of the NK cells is greatly improved, and meanwhile, the immune escape of tumor cells is also reduced.

The invention relates to the technical field of intensive care, and particularly discloses intensive care patient transfer equipment which comprises a height adjusting mechanism arranged at the top of a transfer trolley and used for adjusting the transfer height according to the height of a sickbed. The transfer trolley at least has the following beneficial effects that by arranging the height adjusting mechanism, after the transfer trolley is moved to the position beside a sickbed of a patient, the structure on the transfer trolley can be adjusted to the needed height position according to the height of the sickbed, and then the patient can be conveniently transferred to the transfer trolley from the sickbed; by arranging the shifting mechanism and the pushing mechanism, when a patient is transferred from a sickbed, the shifting mechanism can be moved to the position below the body of the patient through the pushing mechanism, then the patient can be moved through the shifting mechanism, then the working intensity of medical staff can be relieved, and harm to the patient is reduced.

The utility model relates to an automobile body side face anti-collision structure, an automobile body and an automobile, the automobile body side face anti-collision structure comprises threshold beam assemblies, a seat cross beam assembly and a battery pack cross beam assembly, and the threshold beam assemblies are arranged on the two sides of the automobile body side face anti-collision structure; the two ends of the seat cross beam assembly are connected with the doorsill beam assemblies on the two sides of the vehicle body side face anti-collision structure correspondingly. The battery pack cross beam assembly is connected below the seat cross beam assembly, and the seat cross beam assembly and the battery pack cross beam assembly are in T-shaped connection. The two ends of the seat cross beam assembly are connected with the threshold beam assemblies on the two sides of the vehicle body side face anti-collision structure correspondingly, and an I-shaped force transmission structure is formed. The seat cross beam assembly and the battery pack cross beam assembly are in T-shaped connection, and the intrusion amount of a battery pack and a vehicle body can be reduced through collision impact of a T-shaped connecting structure over against the side face; the connection mode can also improve the bending resistance of the seat cross beam assembly and the battery pack cross beam assembly, so that adverse effects on the living space of passengers in the vehicle or the safety of the battery pack are avoided.

The utility model relates to the technical field of burr removing devices, in particular to a forging burr removing device with a dust falling function. The burr removing device with the dust falling function for forging machining aims at solving the technical problems that in the prior art, waste chips are easily sucked in by workers, harm to the body is large, and the waste chips drift around and are difficult to clean. According to the technical scheme, the burr removing device with the dust falling function for forging machining comprises a dustproof machining box; the device further comprises a filter screen, a water tank, a lifting control assembly, a dustproof baffle, a feeding and discharging control assembly, a connecting plate, a lifting rotating assembly, a grinding piece, a dust falling spraying pipe and a vacuum suction cup. The dust falling fence device is arranged on the outer side of the machining table, waste chips are prevented from drifting around, the dust falling effect is achieved by being used in cooperation with the spraying mechanism, the situation that the waste chips float and are sucked by workers is avoided, harm to the body is reduced, the surrounding environment cannot be polluted, and the waste chips are more convenient to clean.