659results about How to "Reduce mechanical damage" patented technology

A multilayer chip capacitor, which reduces ESL generated due to current flowing through external electrodes and assures an improved mechanical strength. The multilayer chip capacitor includes an upper dummy layer and a lower dummy layer; a plurality of internal electrodes interposed between the upper and lower dummy layers; and external electrodes connected to the internal electrodes, wherein the thickness of the lower dummy layer is smaller than the thickness of the upper dummy layer.

The invention belongs to the field of agricultural robots and discloses an under-actuated three-finger type fruit-vegetable flexible picking device which comprises under-actuated finger mechanisms I, a tilting driving mechanism II, a telescopic driving mechanism III, a pruning mechanism IV, a palm supporting disc, a finger driving motor connecting disc and a wrist connecting clamping disc. The three sets of under-actuated finger mechanisms I are evenly distributed on the palm supporting disc which is fixedly connected with the finger driving motor connecting disc. The finger driving motor connecting disc is fixedly connected with the wrist connecting clamping disc which is connected with a wrist of a robotic arm. The tilting driving mechanism II and the telescopic driving mechanism III drive the pruning mechanism IV to tilt and stretch, and the pruning mechanism achieves shear movement. The using range and the using flexibility are expanded, the high picking success rate can be achieved, and mechanical damage on plants and fruits is lowered. Picking of sphere-similar fruits or clustering-growing fruits can be achieved. The device has the advantages that fruit shape self-adaptation capacity is achieved, and contact force is controllable.

The invention discloses an extraction method of a specific mesenchymal stem cell exosome. The method comprises the following steps: collecting supernatant of serum-free mesenchymal stem cells: firstly, culturing mesenchymal stem cells, changing a culture medium for culturing, centrifuging, and removing cell debrises to obtain initial supernatant; taking the initial supernatant for carrying out further gradient centrifugation, transferring the centrifuged supernatant into a sterile centrifugal tube, centrifuging and collecting supernatant containing micro vesicles; centrifuging the supernatantcontaining the micro vesicles to obtain precipitate containing an exosome, washing and then centrifuging to obtain exosome precipitate; adding the obtained exosome precipitate into sterile PBS and filtering to obtain the specific mesenchymal stem cell exosome. The exosome collected in the extraction method disclosed by the invention adopts a filter membrane for filtration, so the extracted exosomeis enabled to be nanoscale; meanwhile, the rotational speed is reduced and optimized, high-speed mechanical damage is reduced, separation efficiency is high and the cost is low.

The present invention relates to a reaping apparatus and a reaping method for continuously reaping whole plants of green vegetables. The reaping apparatus comprises a machine frame, a crop divider, a ripper, a clamping, pulling and reversing apparatus, a root cutting apparatus, a transport apparatus, a lifting apparatus, and a walking apparatus. The crop divider is used for dividing and lifting green vegetables in a harvest area; the ripper is used for ripping a soil at roots of the green vegetables that are gathered together by the crop divider; the clamping, pulling and reversing apparatus is used for clamping and pulling the green vegetables that are gathered together, and reversing the green vegetables during a clamping and conveying process; the root cutting apparatus is used for stably and regularly cutting roots of the green vegetables during a clamping and delivering process; the transport apparatus is used for transporting the green vegetables that are pulled out; the lifting apparatus is used for supporting the clamping, pulling and reversing apparatus, and adjusting a height of the clamping, pulling and reversing apparatus from the ground; and the walking apparatus is used for driving the machine frame to walk in the harvest area. According to the reaping apparatus and reaping method provided by the present invention, a pulling method with flexible belts parallel processing is adopted to continuously reap the whole plants of green vegetables; a flexible material is adopted to avoid damage to stems or leaves; and adaptability to vegetable harvest is good.

The invention discloses a device for launching and landing aircrafts. The device comprises a fixedly arranged rotary launching tower, wherein a rotating shaft is arranged at the middle part of the rotary launching tower; a group of rotating arms extending outwards is arranged on the rotating shaft, one end of each rotating arm is hinged to the rotating shaft, and a bearing platform capable of adjusting an angle of inclination is arranged at the extending end of each rotating arm; telescopic flexible elastic ropes matched with the aircrafts are arranged at the extending ends of the rotating arms. The device adopts a brand-new launching and landing manner for the aircrafts, and a large-area runway is not needed, so that a heavy investment is saved; a plurality of aircrafts can be launched at the same during launching, so that the time is reduced compared with the time used during conventionally successive launching; the device is high in controllability and high in reliability, and the requirement for the operant level of navigating mates of the aircrafts is low.

The invention discloses a jet stirrer for mechanical stirring and desulfurizing of molten iron. The jet stirrer comprises a rotating shaft and stirring blades arranged at the lower end of the rotating shaft and uniformly distributed along the circumferential direction of the rotating shaft, wherein the rotating shaft consists of a metal hollow shaft and a refractory material working lining compounded on the outer side of the metal hollow shaft; an air cooling pipe is arranged in the cavity of the metal hollow shaft; the lower end of the rotating shaft is provided with a jet channel communicated with the air cooling pipe; and the jet channel is positioned between adjacent stirring blades. In the jet stirrer, cooling gas is jetted from a puff port into a stirring center vortex to drive a desulfurizer in a forced vortex area of a stirring center to move relative to molten iron, so that the mixing and dispersing of the desulfurizer in the forced vortex area of the stirring center in the molten iron is realized, and the desulfurizing reaction dynamic condition in the area is improved. Meanwhile, the retention and bonding of desulfuration residues between adjacent blades can be restrained, the effective acting areas of the stirring blades are increased, the dry slag cleaning and maintaining amount of the stirrer is reduced, and the mechanical stirring and desulfurizing production capacity of the molten iron and the utilization ratio of the desulfurizer are increased.

The invention belongs to technological field of animal reproductive physiology and fertility, more particularly relating to method raising fertilization rate of frozen semen from cow and sheep and dilution used in said method, overcoming present technique problems on frozen semen vitality and low rate of fertilization. Its technical arrangements are, adopting steps for elimination of seminal plasma in preservation of frozen semen, and said steps are twice dilution centrifuging of medium speed & short-term. Inclusions of necessary dilution are, sodium citrate 2H2O:1.8- 2.2g;glucose: 2.8-3.2g; glycerine: 5-7.0ml;yolk: 18- 24ml;double distilled water 100ml;Tris0.01g;penicillin 100 (unit); streptomycin 100 (unit) pH value within 6.8-7.2.

The invention discloses a potato grading control method and device based on machine vision technology. The method is characterized in that during image detection, a camera field-of-view is divided into virtual passages with the number corresponding to that of guiding lifting levers according to the number of the guiding lifting levers; a logic value is used for indicating whether to-be-graded potatoes exist on each virtual passage or not; a control and processing unit controls the guiding lifting levers to act according to the detected logic value, and when the logic value is equal to 1, a guiding mechanism corresponding to the guiding lifting levers is upward pushed out by an air cylinder, and potatoes are in contact with the guiding lifting levers, so that the running track of the potatoes is changed, and the potatoes are separated to be thrown into corresponding discharging chutes; and after a camera is used for acquiring images of the potatoes, a virtual circle is drawn by taking the transverse diameters of the potatoes as the diameter according to the image detection result, and whether one or more guide lifting levers are adopted for separating the potatoes is determined according to the areas, occupied by the virtual circle, of the virtual passages. The fast detection of potatoes with various and different quality can be realized, damage to the potatoes can be reduced, and the sorting of the potatoes can be precisely realized.

The invention belongs to a sizing machine for producing continuous carbon fibers, comprising a box body, a sizing groove arranged in the box body and a driving device fixed on the box body, wherein the sizing groove comprises a groove body and a partition board, a liquid distribution plate and an overflow plate which are arranged in the groove body from left to right and are vertical to the bottom of the groove body; the driving device comprises an inlet driving roller arranged at the upper-left part of the sizing groove, two sizing driving rollers positioned in a sizing area and an outlet driving roller arranged at the upper-right part of the sizing groove; the two sizing driving rollers are horizontally arranged and positioned between the inlet driving roller and the outlet driving roller; and driving shafts of the two sizing driving rollers are higher than the liquid level of a sizing agent of the sizing area. The invention solves the problems of long stay time of the carbon fibers in the sizing agent, poor sizing effect, complex structure, high manufacturing cost and inconvenience for daily cleaning and maintenance caused by the traditional sizing machine. By using the invention, the processing and manufacturing cost of the equipment can be reduced, the time of the carbon fibers in the sizing agent can be prolonged and the favorable sizing effect can be obtained.

The fruit and vegetable preserving backing consists of preferably: preservative 4-40 weight portions, physiological regulator 0-30 weight portions and gas regulator 0-30 weight portions. The preservative is one or two of 2-aminobutane, hydrochloride of 2-aminobutane, sulfate of 2-aminobutane, sodium pyrosulfite, potassium pyrosulfite, sodium bisulfite, potassium bisulfite, stable chlorine dioxide, propyl isothiocyanate, cinamic aldehyde and acetyldehyde; the physiological regulator is potassium permanganate and/or potassium bromate; and the gas regulator one or several of soda lime, sodium hydroxide, lime and active carbon. The present invention has the functions of reducing mechanical damage of fruits and vegetables, suppressing softening, yellowing and other senility symptoms of fruits and vegetables during storage and transportation, reducing rot of fruits and vegetables during transportation caused by vibration and pressure and regulating humidity inside the package.

The invention discloses an implantable biological electrode and a manufacturing method thereof. By arranging a backup conducting wire, the reliability of an electrode is improved and the conducting resistance of the electrode is reduced. Each electric path of the electrode is provided with at least one backup channel to ensure that the electrical communication of the path still can be maintained under the condition of the failure of one channel, so that the reliability of the connection of the electrode is improved; moreover, the parallel connection relationship is formed by two or more channels, so that the resistance of the electrode can be reduced.

The invention relates to a plastically deformable implant for inserting into bodily orifices of the human or animal body. Implants of this type are used, for example, in ophthalmology, in particular, as vitreous body or lens replacements and in dentistry, for example, for filling extraction cavities in jaw-bones. Known implants, however, are not suitable for long-term use. The invention aims to provide a deformable plastic implant which also has a long-term application. This is achieved by the fact that the implant consists of a gel which is not sealed, containing fluorocarbon and which is directly introduced into the natural, or artificially created bodily orifice.

The invention discloses a method for manufacturing a duplex stainless steel middle assembly plate frame of a chemical tanker. The method comprises the following steps: S1, the fabrication of a specialtire frame for duplex stainless steel spliced plates, S2, the splicing of the duplex stainless steel plates; S3, the fabrication of the duplex stainless steel middle assembly tire frame; and S4, thefabrication of the duplex stainless steel middle assembly. The method uses a special duplex stainless steel spliced plate tire frame, ensures the precision of the spliced plates, reduces the consumption of the tire frame material, and reduces the mechanical damage to the surface of the duplex stainless steel plate. In the process of splicing the duplex stainless steel plate, a forced weight restrained deformation method is provided so as to reduce the welding deformation during the splicing process. The method utilizes a dummy compartment to control the assembly precision of flat-bulb steel, and provides a flat-bulb steel and duplex stainless steel welding sequence method so as to avoid a large workload in a subsequent precision correction process and shorten a product construction period.

The invention discloses a rotary type banana combing machine, which comprises a rack, a motor, a first gear, a second gear, a bearing, a shaft sleeve, a cutter head, a cutter rest, a first combing cutter and a second combing cutter, wherein the shaft sleeve is fixedly connected onto the upper surface of the rack, the bearing is fixed on the inner ring of the shaft sleeve, a clamping hole is arranged in the inner ring of the bearing, the second gear is fixed on the outer ring of the bearing, the cutter head is fixed on the upper end surface of the second gear, the cutter rest is fixed on the cutter head, the first combing cutter and the second combing cutter are fixed on the cutter rest, the motor drives the first gear to rotate, and the first gear drives the second gear to make rotational motion. Compared with the prior art, the rotary type banana combing machine effectively solves the problems that the treatment efficiency of bananas after production is lower, the processing period is long, the manual labor is intensive, the labor intensity is greater, the mechanical damage to the banana surfaces is serious, the integral aesthetic property of bananas is affected and the morbidity of microbe diseases is increased, and has the characteristics of simple structure, simplicity and convenience in operation, reduced physical labor, shortened processing period, improved treatment efficiency after banana production, reduced damage to the banana surfaces and the like.