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

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.

The invention discloses a preparation method of a medical ozone ointment dressing plaster. The preparation method comprises the specific steps: (1) continuously introducing medical ozone into vegetable oil, and stopping introduction of the ozone when the content of the ozone reaches 80g / L-120g / L, thus obtaining ozone oil; (2) mixing the ozone oil with vaseline, paraffin and a traditional-Chinese-medicine extract, heating for melting, then adding peppermint oil, and stirring uniformly to prepare ozone ointment; (3) soaking medical dressing in the ozone ointment, melted by heating, for 10-20 minutes to obtain ozone oil dressing; (4) carrying out sterilizing treatment on the ozone oil dressing. The preparation method of the medical ozone ointment dressing plaster disclosed by the invention has the advantages that the medical ozone ointment dressing plaster has no any chemical additives and no toxic and side effects, can prevent adherence of wounds when in use, has the effects of inhibiting and killing bacteria, promoting wound healing, moisturizing and protecting wound surfaces and the like, has better clinical application value and is convenient to use and carry.

The invention discloses an in-home elderly care method. Sensors are concealed and installed in dwellings of in-home elderly, and each sensor collects use information of each device and sends the use information to a processor; the processor establishes an action and activity information model of the in-home elderly based on the use information; the processor determines whether or not action and activity information of the in-home elderly meets a preset condition based on the action and activity information model; when the action and activity information meets the preset condition, the processor automatically generates first alarm information and sends the first alarm information to a monitoring end. According to the method, the sensors are concealed and installed in the dwellings, which does not affect the daily life of the in-home elderly, does not cause discomfort of the elderly, does not infringe the privacy of the elderly and does not need too much attention of personnel, the elderly do not need to wear monitoring equipment all the time, thereby achieving unbonded all-weather intelligent care of the in-home elderly and reducing labor costs, and the price is relatively cheaper.

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.

The invention relates to a kind of hydrophobia vaccine for human, which in detail relates to a freeze-drying hydrophobia vaccine for human and its preparation method. It is contained in physiological soluble buffer solution with pH being 7-8, the sodium chloride weight proportion is 0.4-1.0%, one or several from mycose, sucrose, gelatin, maltose and dextran is used as stabilizing agent, the concentration is 0.5-5%; the weight proportion of shaping agent for freeze-drying agent is 1-5%, and the purified hydrophobia viral antigen concentration is 4-20 IU per ml.

The invention discloses a preparation method of bifidus factor QQ candy containing erythritol. The bifidus factor QQ candy containing erythritol comprises the following raw materials in percentage by weight: 5-6.5% of 250 gel strength type-A gelatin, 0.5-1% of CF-130B pectin, 33-37% of white granulated sugar, 17-26% of 75% isomaltooligosaccharide type 500, 23-26% of water, 2-7.5% of high fructose corn syrup, 1.25-1.7% of citric acid, 0.06-0.1% of essence, 0-1.25% of concentrated orange juice, 5-10% of erythritol crystal particles and a proper amount of pigment. In the invention, the prebiotics isomaltooligosaccharide is added into massecuite, and the mixture is stirred uniformly; then citric acid and essence are added into the mixture to adjust the flavor of sugar; and a layer of erythritol crystal particles is coated on the surface of the sugar. The bifidus factor QQ candy contains the prebiotics isomaltooligosaccharide and a new low-calorific-value sweetener erythritol, has the physiological functions of promoting growth of bifidobacterium, adjusting the micro-ecological balance of intestinal canals, obviously improving constipation, preventing dental caries and the like, and is a gel candy with a healthcare nutritional function.

The invention provides an oral composition which is an oral preparation prepared by taking Periplaneta americana extract and Punicosides as active ingredients, wherein the weight ratio of the Periplaneta americana extract to Punicosides is 1:1-1:5. The invention also provides a preparation method and application of the oral composition. According to the oral composition disclosed by the invention, toothpaste can perform synchronous nursing on the oral cavity, teeth and gingiva and can effectively solve dental ulcer, the Punicosides have high in-vivo anti-oxidation and free radical cleaning activities, and the oral composition has a broad-spectrum antibacterial effect, has obvious effects of inhibiting staphylococcus aureus, hemolytic streptococcus, comma bacillus and shigella dysenteriae and has the effects of astringing, stopping bleeding, improving eyesight and the like.

The invention discloses an automobile ventilation grille and an automobile and belongs to the technical field of automobile grilles. The ventilation grille comprises a grille framework, a connecting bar fixed at one side of the grille framework, a plurality of connecting rods rotationally connected with the connecting bar and located in the grille framework in parallel, a sealing device for sealing the gap between each baffle plate and the grille framework, and drive equipment for driving the baffle plates to rotate, wherein each connecting rod is firmly connected with one baffle plate, one end of the top baffle plate is firmly connected with a rotating mechanism, when the drive equipment drives the rotating mechanism to rotate, the rotating mechanism drives the top baffle plate to rotate, and the top baffle plate drives the other baffle plates to rotate through the connecting bar so as to open or close all of the baffle plates. When automobile doors are opened or closed, the ventilation grille can be opened or closed correspondingly, the air pressure stabilization in the automobile is guaranteed, and the injury of the vibration generated in closing the automobile doors to ears is avoided.

The present invention relates to an eyelid retractor for medical ophthalmology, particularly an easy-to-use eyelid retractor for medical ophthalmology. The issue of the invention is to provide the easy-to-use eyelid retractor for medical ophthalmology, which is adjustable and which can reduce work of medical staff. According to a technical scheme, the eyelid retractor includes a base, a large supporting tube, a large lifting rod, a large spring, a first large connecting rod, a large insert, a push-pull plate, a large rotating shaft, an outer ring gear, an arc-shaped tooth plate, an L-shaped movable plate, and the like, wherein the top of the base is embedded with the large supporting tube, the right side wall of the large supporting tube is provided with a large sliding slot; the large lifting rod is slidingly located in the large supporting tube. The eyelid retractor has a flexible structure, can be conveniently adjusted, can meet needs of different patients, is simple to use, does not cause discomfort to a patient, and reduces work of the medical staff.

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.

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.

The invention provides a preparation method of apoptotic vesicle. The preparation method comprises the following steps: 1) culturing a mouse mononuclear macrophage leukemia cell line in vitro; (2) when the confluence degree of the cells reaches 90%-100%, adding STS (staurosporin) to induce cell apoptosis; and (3) collecting the supernatant of the culture solution, and then separating the supernatant by virtue of a gradient centrifugation method, so as to obtain the apoptotic vesicle (apoVs). The invention also provides the apoptotic vesicle and application of the apoptotic vesicle in preparation of a preparation for promoting adipogenic differentiation of mesenchymal stem cells. The apoptotic vesicle provided by the invention can promote adipogenic differentiation of mesenchymal stem cells, can be used for repairing soft tissue defects or recesses, and have no obvious side effects.

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.

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.

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.

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.

The invention discloses an itching-relieving skin care product which contains populus tomentosa carr and can be smeared. The itching-relieving skin care product is prepared from, by weight, 25-35 parts of populus tomentosa carr, 3-8 parts of seaweed powder, 1-3 parts of sodium alginate and 100-120 parts of water. The raw materials are natural and non-irritant, do not produce dependence, is scientific and reasonable in proportion, can give full play to the itching-relieving, anti-inflammatory, antibacterial and skin repairing effect, and the like. The itching-relieving skin care product is especially applicable to senile cutaneous pruritus, eczema and the like, can also be suitable for pregnant women, nursing mothers and children, meanwhile can also play a nursing effect to the skin and has wide application prospect.

The invention provides a traditional Chinese medicine formulation for curing gout and its preparation method thereof. The traditional Chinese medicine formulation for curing gout of the invention is prepared from, by certain weight, dried lily bulb, dried plum, rice bean, papaw, radix puerariae, coix seed. It can effectively cure various gout symptoms without toxic side effect, and will not cause discomfort while taking the medicine, which is applicable to gouty patients of various physiques. The preparation method of the Chinese medicine formulation for curing gout of the invention is simple, applicable to large-scale production, with powdery products suitable for long-term storage.

The invention belongs to the technical field of stem cells, and particularly discloses to an umbilical cord mesenchymal stem cell exosome preparation and application thereof. The umbilical cord mesenchymal stem cell exosome preparation specifically includes exosomes derived from mesenchymal stem cells and a curcumin monophosphate ester salt inclusion compound with the mass ratio being 1:(0.15 to 0.25) and a pharmacologically acceptable carrier, wherein the curcumin monophosphate ester salt inclusion compound is prepared by inclusion with a hydroxypropyl-beta-cyclodextrin mixture with differentdegrees of substitution as a main body and a curcumin monophosphate ester salt as an object. According to the preparation, the exosomes have high purity and content, no precipitation is precipitatedduring preparing of the curcumin monophosphate ester salt inclusion compound, the inclusion rate is high, the preparation can significantly reduce lipid accumulation of Chang liver cells, thus a purpose of reducing fat is realized, side effects are avoided or side effects are small, and adverse reactions to a user cannot be caused.

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.

The invention discloses a cream with the effect of enlarging breasts. The breast enlarging cream is prepared from the following raw materials including 0.5-5 percent of laureth-7, 0.5-5 percent of glyceryl stearate, 0.5-5 percent of PEG-100 stearate, 0.5-5 percent of PEG-40 hydrogenated castor oil, 0.5-3 percent of butyrspermum parkii (shea butter), 0.5-3 percent of sorbitan stearate, 0.5-3 percent of caprylic / caprinic triglyceride, 0.1-1 percent of hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, 0.1-2 percent of cetostearyl alcohol, 0.5-2 percent of myrrh, 0.5-2 percent of brown alga extract and the like. The breast enlarging cream contains various moisturizing ingredients, ingredients for promoting growth of cells and traditional Chinese medicine extracts, can be effectively absorbed by breast skin, synergistically promotes metabolism of breast skin capillaries and breast cells and further promotes breast development again.

The invention discloses a glass fiber warp knitting medical bandage which comprises a bandage body, wherein the bandage body is formed by knitting and processing of a warp knitting machine; the bandage body adopts chaining or changing chaining, weft insertion weave, changing warp plain weave and warp satin weave are added to form fabric with meshes, the surface of the fabric is coated with resin, and the fabric is made of glass fibers; the glass fibers have better X-ray transmissivity than polyester fibers, and later medical examination is facilitated; compared with synthetic organic fiber fabrics, gauze, non-woven fabric and other non-glass fiber composite fabric, glass fiber base cloth is generally higher in strength; a warp knitting method is adopted for preparation, the resilience of the fabric is improved, and the human body fitness and the size stability are superior to those of woven or non-woven fabric; a coated ultraviolet curing resin layer further improves the strength of the bandage to a certain degree; and water is not needed when the bandage is used, so that the infection probability is reduced, skin discomfort cannot be caused, and the curing time can be adjusted according to different irradiation time.

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.

The invention discloses dermatological treatment equipment. The equipment comprises a rack, wherein the upper part of the rack is provided with an arc-shaped cover plate, one end of the arc-shaped cover plate is of a closed structure, and the other end of the arc-shaped cover plate is of an open structure; the bottom of the arc-shaped cover plate is fixedly connected with the upper ends of four damping support pieces separately, the four damping support pieces are fixedly mounted in the rack, the upper part of the rack is also provided with a shell with open structures at the two ends, and theopen end of the arc-shaped cover plate is connected with one end of the shell; a baffle is fixedly mounted at the junction between the inner top wall of the shell and the arc-shaped cover plate, andtwo sliding grooves are symmetrically formed in the edges of the side wall of the baffle and positioned in the shell. The equipment can isolate the limbs of a patient from the head, the affected skinof the limbs of the patient can be conveniently fumigated without causing any discomfort to the patient, and it can be ensured that treatment is carried out smoothly; the equipment has a great treatment effect and is beneficial to popularization.

The invention belongs to the technical field of full-nutrition formula food, and particularly relates to a food stabilizer, solid full-nutrition formula food and a preparation method thereof. The foodstabilizer is prepared from the following components in parts by weight: 1 to 3 parts of microcrystalline cellulose, 0.5 to 2 parts of monoglyceride and diglyceride fatty acid ester, 0.1 to 0.5 partof gellan gum, 0.1 to 1 part of carrageenan, 0.2 to 1 part of sodium tripolyphosphate and 0.2 to 1 part of sodium hexametaphosphate. The food stabilizer is applied to full-nutrition formula food, anda formula is designed professionally and reasonably, so that a product system is stable and meets the requirements of a human body on nutrition. Through an advanced processing technology, the productis converted into a solid state from a liquid state, so that the properties of the product are changed, the nutritional characteristics of the product can be preserved to the greatest extent, the shelf life of the product is prolonged, the product is convenient to preserve, place and transport to the greatest extent, and favorable conditions are provided for sales of the product.

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.

The invention provides an automobile air duct and a preparation method thereof, the automobile air duct comprises the following raw materials in parts by weight: 70-82 parts of PE (polyethylene), 4-8parts of antimonous oxide, 8-16 parts of decabromodiphenyl ethane, 3-10 parts of POE, 0.1-0.3 part of antioxidant 1076, 0.1-0.3 part of antioxidant 168 and 0.1-0.4 part of ultraviolet absorbent UV 944; and an anti-dripping agent accounts for 0.35% of the total weight of the substances. The automobile air duct is formed by blow molding, and the prepared automobile air duct is good in flame retardancy, high in anti-bending strength, high in tensile strength and small in smell.

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.

The invention discloses a gingiva mesenchymal stem cell preparation for beautifying. The invention further discloses a method for preparing the stem cell preparation and application of the stem cell preparation in preparing cosmetics or drugs for beautifying. The gingiva mesenchymal stem cell preparation for beautifying has the advantages that stem cells are high in survival rate, the storage period is long, the beautifying effect is good, and adverse reactions to a user cannot be caused.