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96results about How to "Does not cause discomfort" patented technology

Efficient paint spraying device of circular anti-collision barrel used for traffic bridge

The invention relates to a circular anti-collision barrel paint spraying device for traffic bridges, in particular to a high-efficiency paint spraying device for circular anti-collision barrels for traffic bridges. The technical problem to be solved by the present invention is to provide a high-efficiency painting device for circular anti-collision barrels for traffic bridges, which saves time and labor, sprays paint evenly, does not need to spray paint on the anti-collision barrels manually, and does not cause physical discomfort. In order to solve the above-mentioned technical problems, the present invention provides such a high-efficiency paint spraying device for circular anti-collision buckets for traffic bridges, which includes a cart, a paint box, a lower hopper, a water pump, a discharge pipe, a first fixed sleeve, and a first spray head. etc.; the left side of the top of the trolley is bolted to install a paint box, and the middle of the top of the paint box is bolted to install a lower hopper. The invention achieves the effects of saving time and labor, uniform painting, no need to manually spray paint on the anti-collision barrel, and furthermore, no physical discomfort, and high working efficiency.
Owner:惠安普科优利网络科技有限公司

High resolution fundus oculi vascellum flow velocity measuring system and measuring method

The invention relates to a measurement system and a method for detecting ocular fundus blood flow velocity with high resolution. The measurement system is characterized in that a bacon light source is focused on the fundus by a human eye through a plurality of optical components to form a bacon spot; the spot is transformed into parallel light through the eye after backward reflection, and reaches a wavefront sensor through a wavefront phase corrector and a series of optical components to realize the process of self adaptive aberration correction; the imaging light source is focused on the front focus of the eye through the optical components, and is collimated by the eye into the parallel light to illuminate the retinal vascular microcirculation system; a laser speckle interferometry is formed on the surfaces of the fundus blood vessels illuminated; the interference field enters into wavefront phase corrector through the optical components and is reflected and finally focused on a photodetector through the series of optical components; a light speckle imaging process is realized. The measurement method has the advantage of enabling the whole system to overcome negative influences from the aberration of human eyes on capturing laser speckle interference field images, thus facilitating to obtain fundus velocity graph of high precision and resolution.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI

Helmet-type electroencephalography cap based on optical crystals

The invention discloses a helmet-type electroencephalography cap based on optical crystals. A lot of optical crystals (2) are arranged in a flexible helmet shell (1) are connected through optical fibers (4), flexible dry electrode arrays (3) are arranged on two electrodes of the optical crystals (2), a light source (5) provides input light waves, the input light waves pass a light coupler (6), enter first transmission optical fibers (7) and are connected with input ends of the optical crystals (2), output ends of the optical crystals (2) pass second transmission optical fibers (8), and modulated output light waves are received by a photoelectric detector (9) and finally transmitted to a processor (11) and a storage (12) by a signal processing module (10). Compared with the prior art, the electroencephalography cap effectively solves the problems that an existing electroencephalography detection system is easily interfered by electromagnetism and low in signal to noise ratio, the cap can be directly worn, coating of conductive paste is omitted, a flexible dry electrode has a certain elasticity, the flexible dry electrode can effectively contact with the head skin of a tested patient, discomfort of the tested patient is avoided, and the flexible dry electrode can be compactly arranged on needed head acquisition portion, so that the distribution states of electroencephalography signals are acquired.
Owner:TIANJIN UNIV

Device for generating warning sound of vehicle, and vehicle

The invention discloses a device for generating warning sound of a vehicle and a vehicle. The device for generating warning sound of the vehicle comprises a sounding system. The sounding system comprises a microphone, a signal-processing circuit, and a loudspeaker. The microphone is used for detecting background noise to generate a background noise signal. The signal-processing circuit is used for receiving the background noise signal output by the microphone, amplifying the power of the background noise signal and then outputting the background noise signal with amplified power to the loudspeaker. The loudspeaker is used for playing the signal output by the signal-processing circuit. The device for generating warning sound of the vehicle further comprises a device for adjusting the relative position of the microphone and the loudspeaker. The device for adjusting the relative position of the microphone and the loudspeaker is used for adjusting, when a warning condition is triggered, the relative position of the microphone and the loudspeaker in order that the sounding system forms a closed-loop audio feedback loop and sounds. The invention also discloses a vehicle. The device for generating warning voice of the vehicle may sound in a simple way in order to draw pedestrians' attention for improving safety.
Owner:潍坊歌尔丹拿电子科技有限公司

Preparation method and storage method for placenta-derived mesenchymal stem cell exosome

The invention relates to a preparation method and a storage method for placenta-derived mesenchymal stem cell exosome, and belongs to the technical field of stem cells and regenerative medicines. Thepreparation method comprises the following steps of: culturing a P3 generation placenta-derived mesenchymal stem cell; after a degrees of fusion reaches 80-90%, sucking the P3 generation placenta-derived mesenchymal stem cell out of a culture medium, and culturing in a DMEM (Dulbecco's modified eagle medium) for 24 h; then, collecting liquid supernatant, and removing cell debris; filtering througha 0.22 [mu] m sterile filtration membrane, taking out a filtrate, carrying out centrifugation at a revolving speed of 13000 r/ min for 60 min, filtering the liquid supernatant through the 0.22 [mu] msterile filtration membrane to obtain high-purity exosome, and finally, carrying out re-suspension by normal saline and centrifugation at a revolving speed of 13000 r/ min for 65 min to obtain the concentrated exosome; and adding the exosome into a cryopreservation liquid containing an SR serum-free medium, glycerol and vitamin C, freezing at a temperature of 80 DEG C below zero for 24h, taking out, and carrying out cryopreservation in liquid nitrogen at a temperature of 196 DEG C below zero. The above preparation method for the placenta-derived mesenchymal stem cell exosome aims at deficiencies in the conventional art, an extraction method is regulated, and the cryopreservation liquid is improved to obtain the high-purity high-density exosome capable of keeping activity.
Owner:GUANGDONG VITALIFE BIOTECHNOLOGY CO LTD

Method for eliminating influence of body motion in vital sign detection based on optical flow method and LMS algorithm

The invention discloses a method for eliminating influence of body motion in vital sign detection based on an optical flow method and an LMS algorithm, wherein the method comprises the following steps: obtaining a vital sign signal from an echo signal collected by a radar sensor, extracting a breathing signal and a heartbeat signal from the signal; collecting a video image of an object to be tested by a video sensor, and selecting an ROI region; obtaining an optical flow vector of each pixel in the ROI region of each frame of image by the optical flow method, and calculating the position change of the object to be measured relative to the radar sensor according to the obtained optical flow vectors; and according to the position change, eliminating the body motion of the object to be testedby the LMS algorithm, so as to obtain a better vital sign signal. The method is realized by combining the single radar sensor with the video sensor, and has low cost; at the same time, the influencecaused by random movement of a human body can be effectively eliminated by combining the optical flow method with the LMS algorithm, an additional testing device is not needed to be additionally addedon the object to be tested and the method is effective, feasible and reliable in performance.
Owner:NANJING UNIV OF SCI & TECH

Antibacterial and anti-mosquito XPE foam material and preparation method thereof

The invention relates to the technical field of polymer foam materials, provides an antibacterial and anti-mosquito XPE foam material and a preparation method thereof, and aims to solve the problems that an XPE foam material product is easy to generate bacteria and affect skin health when in use, and meanwhile, mosquitoes easily crawl or fly to a mat to affect the use experience of XPE foam material products such as yoga mats and baby crawling mats. The XPE foam material is prepared from the following components in parts by weight: 10-25 parts of PE resin, 20-55 parts of a foaming agent masterbatch, 10-20 parts of a cross-linking agent master batch, 10-20 parts of a mosquito repelling master batch, 10-20 parts of antibacterial master batch, 0-5 parts of a processing aid, and 0-3 parts ofa color master batch. wherein the foaming agent master batch is prepared by mixing an AC foaming agent and polyethylene (PE) according to a ratio of 1: 2 and performing banburying and granulating, andthe cross-linking agent master batch is prepared by mixing a DCP cross-linking agent and polyethylene (PE) according to a ratio of 1: 20 and performing banburying and granulating. The antibacterial and anti-mosquito XPE foam material is especially suitable for XPE foam material products needing antibacterial and anti-mosquito effects, and has high social use value and application prospects.
Owner:JIANGSU LIYANG NEW MATERIALS CO LTD

Barrel type radiation and convection heat exchanger and heat exchange treatment method thereof

The invention provides a barrel type radiation and convection heat exchanger and a heat exchange treatment method thereof. The barrel type radiation and convection heat exchanger is structurally mainly composed of a barrel-shaped heat conduction shell and a heat conduction inner barrel which are vertically and coaxially arranged. A heat exchange water source water supply channel is formed by a clearance between the heat conduction inner barrel and the barrel-shaped heat conduction shell, and a heat exchange water source water return channel is arranged in inner space of the heat conduction inner barrel. Radiation heat exchange and circulation convection heat exchange can be achieved at the same time, and good overall heat exchange efficiency is achieved. No fan or other complex components exist, no noise or blowing feeling is generated during work, and mounting and using are convenient. According to the barrel type radiation and convection heat exchanger, the heat exchange treatment method of combining radiation heat exchange and circulation convection heat exchange at the same time is adopted, the main beneficial effects of a radiation type heat exchange tail end and a convection type heat exchange tail end are achieved, meanwhile, the main defects of the radiation type heat exchange tail end and the convection type heat exchange tail end are overcome, the defects of a radiation type heat exchange tail end and a convection type heat exchange tail end in the prior art are overcome, and good market application and popularization value is achieved.
Owner:CHONGQING UNIV

Road energy collecting device

The invention provides a road energy collecting device and relates to the technical field of design of energy transition devices. A left internal gear and a right internal gear are respectively arranged on the inner walls of two ends of a split horizontal roller; the left end of a main driving shaft is fixed with a left side vertical plate of a split box body through a left small angle contact ball bearing; an inner ring of the left small angle contact ball bearing is in interference fit with the main driving shaft; the right end of the main driving shaft is coupled with an input shaft of a power generator through a coupling; the main driving shaft on the inner side of the left small angle contact ball bearing is provided with a left spur gear meshed with a small planetary gear I; the small planetary gear I is meshed with a small planetary gear II with a half shaft; a shaft of the small planetary gear II is fixed with the left side vertical plate of the box body through a small deep groove ball bearing II; the small planetary gear II is meshed with the left internal gear; the main driving shaft on the inner side of the left spur gear is provided with a left large small contact ballbearing; an outer ring of the left large small contact ball bearing is fixed with the inner wall of the left side of the horizontal roller; a driving structure on the right side of the horizontal roller is similar to that on the left side of the horizontal roller. The road energy collecting device is used for collecting road energy.
Owner:SOUTHWEST JIAOTONG UNIV

Hemostatic clamp

PendingCN113440207AAvoid medical safety accidentsEasy to operateWound clampsMedical equipmentButt joint
The invention relates to the technical field of medical equipment, and in particular relates to a hemostatic clamp. A tail hook is integrally formed at the tail end of each clamp piece; an upper buckle position and a lower buckle position are integrally formed at the head end of a pull rod, and the tail hook is clamped in the buckle positions; an upper opening groove and a lower opening groove are arranged in the outer ring wall of a support, the tail hook is movably clamped in the opening grooves, a front bending piece and a rear bending piece are integrally formed at the tail end of the support, and the outer wall of the arc-shaped portion of the tail of the clamping piece abuts against the inner ring wall of the head port of the support; the head end of a shaft sleeve is inserted into the tail end of the support, and a boss at the head end of the shaft sleeve is adjacent to the tail end of the support; the mandrel is inserted into the shaft sleeve, and a front clamping groove and a rear clamping groove are formed in the head end of the mandrel; the bending sheet penetrates through the notches in the front and rear side walls of the head end of the shaft sleeve and then is clamped with the clamping groove; and the head end of a butt joint pipe penetrates through the mandrel and then is fixed to the tail end of the pull rod. During hemostasis locking, the phenomenon of excessive clamping is avoided, discomfort to a patient is avoided, the operation is convenient, and the hemostasis clamp can be widely applied.
Owner:江苏欣普瑞医疗科技有限公司

Protective head bracket and digital subtraction ngiogrphy apparatus

Provided are a protective head bracket and a digital subtraction ngiogrphy apparatus, wherein the protective head bracket comprises a top bracket and a second top supporting rod. The second top supporting rod is perpendicular to first top supporting rods; and two ends of the second top supporting rod are respectively connected with one end of each of two first top supporting rods. Four supporting columns are vertically arranged at the bottom of the top bracket. Top end of the four supporting columns are respectively connected with two ends of the two first top supporting rods. Two bottom supporting rods are arranged in parallel. Each bottom supporting rod is respectively connected with bottom ends of two supporting columns. The bottom supporting rods are in parallel with the first top supporting rods, and are perpendicular to the supporting columns with respect to the second top supporting rod. A neck pillow is arranged between the two bottom supporting rods; two ends of the neck pillow are respectively and detachably connected with the two bottom supporting rods. The protective head bracket is matched with a bed body of the digital subtraction ngiogrphy apparatus, thereby allowing the patient to feel comfortable in the examination process.
Owner:SHANGHAI CITY JIADING DISTRICT CENT HOSPITAL

Stomach tube folding and clipping device

PendingCN109998926AInhibit refluxDoes not cause additional discomfortFeeding-tubesAcute angleEngineering
The invention discloses a stomach tube folding and clipping device, and relates to the technical field of medical fixing devices. The stomach tube folding and clipping device comprises an upper box cover, a lower box cover, a connecting rod and a fixing band. The upper box cover and the lower box cover are connected through the connecting rod. An upper stomach tube fixing groove and an upper stomach tube clipping hole are formed in the inner surface of the upper box cover. A lower stomach tube fixing groove and a lower stomach tube clipping hole are formed in the inner surface of the lower boxcover. The upper stomach tube fixing groove and the lower stomach tube fixing groove are in vertical symmetry and form an acute angle. The upper stomach tube clipping hole and the lower stomach tubeclipping hole are in symmetry. A hook-and-loop fastener hook surface is arranged in the fixing band and can be attached to a hook-and-loop fastener loop surface on the outer surface of the lower box cover so that the whole novel stomach tube folding and clipping device can be fixed. According to the device, the effect of clipping a stomach tube for the first time can be realized directly through the stomach tube clipping holes, the effect of clipping the stomach tube for the second time can be realized through the acute-angle stomach tube fixing grooves, finally the whole device can be fixed through a hook-and-loop fastener, the problem that the backflow of a nutrient solution in the tube is caused by the poor clipping of the stomach tube is effectively solved, and the stomach tube foldingand clipping device is convenient to operate and durable in fixation.
Owner:DALIAN UNIV
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