2396results about How to "Safe to use" patented technology

The invention provides a cement-based composite material used for a 3D printing technology as well as a preparation method and application thereof. The cement-based composite material is prepared from the following raw materials based on the total weight of the composite material: 33%-40% of cement, 0%-8% of inorganic powder, 32%-38% of tailing machine-made sand, 2.5%-3% of a high-molecular polymer, 0.1%-0.5% of a water reducing agent and 16.7%-20% of mixing water; a composite thickening time control agent, a thixotropic agent, a volume stabilizer and the like are added into a mixture to prepare an inorganic composite material; and then the inorganic composite material can be directly pumped into a 3D printer for building to be applied to construction. The cement-based composite material is an inorganic material and the materials are easily available; a lot of industrial waste materials can be used; therefore, the cement-based composite material is low in cost, energy-saving and environment-friendly; the condensation time can be flexibly controlled, and the material has super early strength, good caking property and strong stability; the requirements of 3D printing construction continuity of the building and the building strength are met so that the house building has good global stability and use safety; and the application and popularization of 3D printing technology can be greatly promoted.

A method and system for performing linear and circular movement patterns is provided. The method and the system include a limb-activated linearly and circularly moveable apparatus comprising a rotatable platform coupled to a slideable base. A limb gripping the apparatus can slide the apparatus across a surface while rotating the platform. The apparatus is designed to constantly realign the joints involved in the movements and without straining the joints of the body to maximize productivity and promote joint comfort.

To produce a nonwoven fabric comprising a conjugated fiber comprising a plurality of resins which are different in thermal shrinkage and form a phase separation structure. In the nonwoven fabric, the conjugated fibers are arranged in a direction approximately parallel to a surface direction of the nonwoven fabric and crimped. In addition, the conjugated fibers have an average curvature radius of fiber crimp of 20 to 200 μm and the crimps are distributed approximately uniformly in a thickness direction of the nonwoven fabric. The nonwoven fabric is substantially free from an adhesive agent. In the nonwoven fabric, each fiber is substantially not melt-bonded to another. The conjugated fiber may comprise a polyalkylene arylate-series resin and a modified polyalkylene arylate-series resin and have a side-by-side or eccentric sheath-core form. Since the bimetal form conjugated fibers having specific crimps are appropriately entangled with each other, the nonwoven fabric has a high stretchability and is easily torn by hand, without using scissors. The nonwoven fabric is suitable for a tape such as a bandage or a supporter.

The invention discloses a bi-component cement based composite material for 3D (three dimensional) printing as well as a preparation method and application thereof. The bi-component cement based composite material for 3D printing comprises a component A and a component B, wherein the component A is prepared from 34 to 40 percent of sulphate aluminium cement, 0 to 6 percent of inorganic powder, 40 to 44 percent of tailing machine-made sand, 2.5 to 3 percent of high-molecular polymer and the balance of a retarder, a water reducer, a size stabilizer, a defoaming agent and water, the pumping performance can be well kept for a long time, an industrialized process of pre-stirring production in a mixing plant, transportation, and using in a construction site can be realized; the B component is prepared from a coagulate promoting agent, a thixotropic agent, a defoaming agent and water, the component is stable in form and can be stored for a long time or produced in a concentrated manner. After A and B are respectively pumped in a 3D printer, through high-speed stirring and being mixed by an extrusion head, the composite printing material can be extruded out, the time of coagulation is short, the strength is high, the adhesion is good, the stability is strong, the constructive continuity and building strength requirements of building 3D printing can be met, the industrial production and promotion of the cement based 3D printing material are facilitated, and the application of a 3D printing technology in buildings can be effectively promoted.

The endoscope light source device includes a semiconductor light source, optical fibers that are inserted into an endoscope, guide first light beams from the semiconductor light source, and are arranged in plural rows in at least an angle portion of the endoscope, an optical coupling circuit that is arranged at a distal end side of the endoscope with respect to the angle portion, and couples the first light beams guided by the optical fibers arranged in the plural rows to obtain a coupled light beam and a wavelength conversion part that is arranged at a distal end side of an endoscope insertion section in the optical coupling circuit, and converts a part or all of the coupled light beam from the optical coupling circuit into a converted light beam having a given wavelength by a phosphor.

A method for producing a preparation containing a bioactive substance, characterized in that it comprises forming a solid material containing the bioactive substance and a polymer, and contacting the solid material with a high pressure gas. The method allows the production of a preparation which is suppressed in excessive initial release of the bioactive substance immediately after the administration thereof, is capable of releasing a predetermined amount of the bioactive substance over a long period of time, and is extremely reduced in the deterioration of the bioactive substance and in the amount of a residual organic solvent.

The invention relates to an air fryer which comprises a machine body, wherein a cooking cavity with an opening is formed in the machine body, and a pot body for accommodating food is arranged in the cooking cavity body. The air fryer is characterized in that a driving mechanism capable of driving the pot body to enter the cooking cavity body from the opening of the cooking cavity body and drivingthe pot body to move out of the cooking cavity body from the opening of the cooking cavity body is arranged in the machine body, an instruction input component connected with the driving mechanism isarranged on the machine body, a tray or a dragging basket fixedly connected with the driving mechanism is arranged in the cooking cavity body, and the pot body is detachably arranged on the tray or detachably arranged in the dragging basket. Compared with the prior art, the air fryer disclosed by the invention has the advantages that the pot body is automatically driven by the driving mechanism toenter the cooking cavity body from the opening of the cooking cavity body or the pot body is automatically driven by the driving mechanism to move out of the cooking cavity body from the opening of the cooking cavity body, so that safety and convenience in use are achieved; the driving mechanism is fixedly connected with the tray or the dragging basket, and the pot body is detachably arranged onthe tray or detachably arranged in the dragging basket; thus, the pot body can be conveniently taken out of the machine body to be cleaned.

A cervical canal dilator comprising an elongate tubular or cylindrical shaft having a distal end and a proximal end; the interior of the shaft being provided with internal cavities that communicate with anchor and dilation balloons in such a manner as to permit the separate inflation thereof; the anchor balloon being positioned on the distal end of the shaft and being capable of anchoring the dilator against the bottom of the cervix when inflated after the dilator is inserted in a cervix and the remaining dilation balloons being positioned between the distal and proximal ends so as to effect optimum dilation of the cervical canal when inflated after the device is inserted and anchored in place by inflation of the anchor balloon.

Described herein are methods and apparatuses to mate the object with a cap through a fabric portion of the garment. The methods and apparatuses described herein may address the needs for a safe, secure, and detachable method and apparatus for affixing an object (such as an encased wireless sensor) to a garment worn by a subject.

The invention relates to a preparation method for a chitosan natural polymer modified crude oil desalting demulsifier. The method comprises the following steps: 1) modifying polyethylene glycol monomethyl ether by halogenating; 2) preparing glycidyl dimethyl alkyl ammonium chloride; 3) preparing quaternized carboxy alkyl chitosan; 4) causing the modified polyethylene glycol monomethyl ether to react with the quaternized carboxy alkyl chitosan, thereby obtaining a target product, polyethylene glycol monomethyl ether grafted quaternized carboxy alkyl chitosan. According to the invention, the chitosan natural high-molecular compound is taken as the raw material and has the advantages of wide resource, naturality, non-toxicity, sustainability, excellent biological compatibility of products, degradability, and the like. The demulsifier prepared according to the invention has excellent demulsification dewatering effect; the molecule of the demulsifier contains a large amount of carboxy alkyl groups and quaternary ammonium salt groups and the electronegative ions, including metal cation, naphthene acid radicals, and surfaces are electronegative grains and have strong combining capacity, so that the demulsifier has the capacities of demulsifying while removing oil-soluble salt.

The invention relates to a preparation method of a polyether-grafted chitosan derivative crude oil desalting demulsifier. The preparation method comprises the following specific steps: firstly, performing formylation modification on polyethylene glycol monoethylether; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternarization carboxyalkyl chitosan; fourthly, enabling formylation modified polyethylene glycol monoethylether to react with carboxy alkyl chitosan to obtain the polyether-grafted chitosan derivative crude oil desalting demulsifier. The polyether-grafted chitosan derivative crude oil desalting demulsifier disclosed by the invention is prepared by taking chitosannatural polymeric compounds as raw materials, and has the advantages of wide sources, naturalness, no toxicity, sustainability, good biocompatibility of a product, degradability and the like. The prepared demulsifier is good in demulsifying and dehydrating effect; meanwhile, a demulsifying molecule contains a large amount of carboxyalkyl groups and quaternary ammonium salt groups which have strong combining capacity to metal cation, ions with negative electricity such as naphthenic acid radicals as well as particles of which the surfaces are electronegative, so the polyether-grafted chitosan derivative crude oil desalting demulsifier has capacity of removing oil-soluble salts while demulsifying.

This invention provides a pharmaceutical composition comprising a non-peptide osteogenesis-promoting substance and a polyethylene glycol or a derivative thereof, which can be advantageously used as a agent for preventing or treating various bone diseases (e.g., osteoporosis) in view of the high oral absorbability and stability of the active ingredient.

In a knife, the combination, comprising a cartridge, a blade carried by the cartridge, a holder supporting the cartridge so that the blade projects from the holder, a shield for the blade, carried to be displaced relative to the holder and blade to expose the blade, for cutting.

An anti-tip assembly for a power wheelchair with a frame and has a resilient bracket and a front wheel assembly. The resilient bracket has a mounting bracket, a resilient arm and a resilient wheel connector. The mounting bracket is connected to the frame and has a top edge. The resilient arm is formed on and protrudes forward from the top edge of the mounting bracket and has a distal end. The resilient wheel connector is formed on and extends from the distal end of the resilient arm and has a bottom leg. The front wheel assembly is connected securely to the bottom leg of the resilient wheel connector and has a wheel bracket and an idler wheel. The wheel bracket is connected to the bottom leg of the resilient wheel connector and has two wings. The idler wheel is mounted rotatably between the wings.

The invention relates to a synthesis method of a crude oil desalting demulsifying agent. The method specifically includes the steps of firstly, conducting p-nitrophenyl ester modification on methoxypolyethylene glycol; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternized carboxy alkyl chitosan; fourthly, making the modified methoxypolyethylene glycol react with quaternized carboxy alkyl chitosan to obtain a product, namely polyethylene glycol questin grafted quaternized carboxy alkyl chitosan. A chitosan type natural high-molecular compound serves as the raw material and has the advantages of being wide in resource, natural, free of toxin, sustainable, good in product biocompatibility, degradable and the like; The prepared demulsifying agent is good in demulsifying dewatering effect; meanwhile, due to the fact that lots of carboxy alkyl groups and quaternary ammonium salt groups are contained in demulsifying agent molecules and have strong binding capacity with metal cations, naphthenic acid radicals and other ions with negative charges and particles with surface electronegativity, the oil-soluble salt removing capacity is achieved during demulsifying.

The invention relates to a preparation method of a double-ion type crude oil desalting demulsifier. The preparation method specifically comprises the following steps: (1) carrying out esterification modification on polyethylene glycol monomethyl ether; (2) preparing glycidyl dimethyl alkyl ammonium chloride; (3) preparing quaternary ammonium carboxymethyl chitosan; (4) making the modified polyethylene glycol monomethyl ether react with the quaternary ammonium carboxymethyl chitosan to obtain a polyethylene glycol monomethyl ether grafted quaternary ammonium carboxymethyl chitosan. The double-ion type crude oil desalting demulsifier takes natural macromolecular compounds of chitosan as raw materials, thereby having many advantages of wide sources, naturalness, no toxicity, sustainability, good product bio-compatibility and degradation and the like. The prepared demulsifier is good in demulsification and dehydration effects, furthermore, demulsifier molecules contain a large number of carboxyl alkyl groups and quaternary ammonium salt groups, so that the demulsifier has a very strong binding capacity for negatively charged ions such as metal cations, naphthenic acid radicals and particles of which the surfaces are electronegative, thereby further having the removal ability for oil soluble salts while performing demulsification.

The invention discloses an advertising board convenient to move and install. The advertising board comprises a fixed box and an advertising board body, wherein a first motor is fixedly connected to the top of the fixed box via a support frame; an output shaft of the first motor runs through the fixed box and extends into the fixed box; a first bevel gear is fixedly connected to the output shaft ofthe first motor via a shaft coupling; second bevel gears are meshed at two sides of the surface of the first bevel gear, and threaded rods are fixedly connected to the middles of the second bevel gears; movable blocks are connected to the surfaces of the threaded rods via screw threads; and rotary rods are rotatably connected to the surfaces of the movable blocks via movable pieces. The inventionrelates to the technical field of advertisement. With the application of the advertising board convenient to move and install provided by the invention, problems of an existing advertising board which is inconvenient to carry and move can be solved; and the advertising board device can greatly facilitate people in safe using, avoid inconvenience to the people, improve working efficiency of the people and reduce workload of the people.

The invention relates to a preparation method of a polyelectrolyte-type crude oil-desalting demulsifier. The preparation method comprises the following specific steps: (1) performing amination modification on methoxypolyethylene glycol; (2) preparing glycidyl dimethyl alkyl ammonium chloride; (3) preparing quaternized carboxyalkyl chitosan; (4) carrying out a reaction between the modified methoxypolyethylene glycol and the quaternized carboxyalkyl chitosan to obtain a target product methoxypolyethylene glycol-grafted quaternized carboxyalkyl chitosan. The polyelectrolyte-type crude oil-desalting demulsifier takes a natural macromolecule chitosan compound as a raw material, and has the advantages of wide sources, naturalness, non-toxicity, sustainability, good product biocompatibility, biodegradability and the like. The prepared demulsifier has good demulsifying and dehydrating effects; a demulsifier molecule contains a large number of carboxyalkyl groups and quaternary ammonium groups, which have very strong capacity of bonding metal cations, negatively-charged ions such as naphthenic acid radicals, and particles with negative charges on the surfaces, so that besides the demulsifying capability, the demulsifier also has the capability of removing oil-soluble salts.

A nebulizer for a fluid and a container holding the fluid which is insertable in the nebulizer are proposed. To improve safety in use it is proposed that the nebulizer comprises first coding means and the container is associated with second coding means, so that the container can only be inserted in the nebulizer or used therewith if the codes match. Preferably, the code associated with the container comprises clear identification of the fluid contained in the container.

The invention discloses a method for electrically forecasting a danger in underground tunneling engineering, which comprises: building an approximately even current field in the direction of a tunnel or a laneway by burying long-distance fixed-source first and second power supply electrodes underground in the direction of the tunnel and the laneway; measuring and recording current field change under the background of the approximately even current field by using a measuring electrode buried in tunnel heading face of the laneway and a measuring electrode arranged in or outside the tunnel; and predicating and forecasting a danger around the tunnel heading face according to a law for the change of the electric field. The method has the advantages that: an electrical instrument can be placed in ground station for observation; intra-laneway power supply is avoided; the arrangement of the electrodes is convenient; and the early warning and forecasting cost is low. The method can be widely used in the field of projections involving laneway or tunnel construction, such as coal mine, mine production, communication, water conservancy and hydropower and subway projections.

The invention discloses a protection processing method of software operation, comprising: starting and operating the target software under specific operating environment; monitoring the progress of the target software and storing the operating data and operation record obtained by monitoring the target software; recovering the target software to a designated operating state according to the stored operating data and operation record. The invention also provides a protection processing apparatus of software operation, which can avoid the viruses during the operating of the software and direct damages for operating system caused by cockhorse, can implement the record, playback and control of the during software using, and can be enable the user to be convenient, visual and safe during software using.

Aqueous dispersible fine emulsion of complete acrylic ester copolymer as oil- and water-resisting agent is prepared by: preparing complete alkyl copolymerized monomer fine emulsion dispersed uniformly, and then polymerizing without organic solvent and emulsifying to aid it. It is stable for restore or dilution, and can be used for substrate materials of fabrics, leathers or paper as waterproof and oil-proof finishing agent.

The invention discloses an escape automatic window-breaking system for a passenger vehicle and a control method thereof and belongs to the technical field of safety control of passenger vehicles. Glass embedded with electric heating wires is mounted on a vehicle window of the escape automatic window breaking system for the passenger vehicle, the electric heating wires are connected to a power supply of the passenger vehicle through a power supply main line, and an automatic control system is arranged on the power supply main line. The control method of the escape automatic window breaking system for the passenger vehicle, disclosed by the invention, comprises the following steps: respectively comparing a temperature value T in the vehicle, a smoke fog concentration value Sm and an external impact force P with preset critical values and processing through a controller according to all the values. The escape automatic window-breaking system for the passenger vehicle, disclosed by the invention, can be used for increasing the safety coefficient of the passenger vehicle and protecting the life safety of passengers to the greatest extent, and has important significance in reducing casualties and is wide in application range; and according to the control method of the escape automatic window breaking system for the passenger vehicle, disclosed by the invention, both an automatic control window breaking way and a manual switching way can be realized, and the safety and reliability of the window breaking system can be fully ensured.

An impact-protection safety structure is provided for a headwear, including an impact protector formed by a knitted resilient net lining having a suitable thickness and fixed at a suitable location on an inside surface of the headwear to serve as padding, whereby when the head of a wearer is subjected to impacts, proper buffering and protection are ensured so as to realize safety and protection against impact to the head after the headwear is worn.

The invention relates to a waterborne soft printing ink comprising the components: film-forming resin emulsion of 8.7-47.2wt percent, waterborne acrylic color paste of 40-50wt percent, antifoam agent of 0.1-0.3wt percent, waterborne wax paste of 0.2-2.0wt percent, isopropyl alcohol of 2-8wt percent, ethylene glycol of 10-30wt percent, ethanolamine of 0.5-1wt percent and water of the rest percent. The invention further provides a method to prepare the waterborne soft printing ink. The waterborne soft printing ink of the invention is nontoxic and environmental friendly, has good safety, stable performance and good adaptability to coated art paper printing, and can be continuously used in printing without mackle, has clear printing effect and low production cost.

Disclosed is a water-cooled radio frequency tumor extinguishing treatment system, which employs radio frequency heating means to place the target tissue in human body into between the melting electrode and leading electrode, a series resonant circuit is utilized in the radio frequency energy amplification, the rear portion of the melting electrode needle of the cold circulating pinshaped electrode is plated with an insulation coating layer, a bare tip is formed on the front end, thus the radio frequency energy capacity can radiate from around to the leading electrode, as a result, a melting zone is formed. The recirculated cooling water flows from the inlet pipe to the melting electrode needle, and returns to the recirculated cooling water subsystem from the exhaust pipe after heat interchange.

The invention discloses a method for processing feedstuff such as distilled grains, etc. by mixed fermentation, and the strain is brevibacterium lactofermentus and candida utilis; the technique is that: strain liquid cultured by a third class seed is mixed and then inoculated in a mixed fermentation medium; the mixed seed liquid is inoculated in the mixed fermentation medium with 50 to 60 percent of humidity according to 1:10 of inoculum concentration; the obtained mixture is fermented by sectional fermentation at the temperature of 30 to 37 DEG C, and the obtained leavening is dried at the temperature of 40 to 60 DEG C, and packed so as to obtain a finished product; the invention adopts the sectional fermentation mode which is aerobic firstly and then is anaerobic, thus eliminating rape seed cakes or thioglucoside and gossypol in cottonseed crumb, increasing the total content of protein in the distilled grains, degrading the alcohol substances and decomposing non-starch polysaccharide substances such as cellulose, etc.; the content of the cellulose of the obtained feedstuff finished product is reduced from 25 to 11 percent, and the protein content is increased from 15 percent to 30 to 40 percent; the feeding effect of animals is good.

A wearable display device equipped with a detection function is disclosed. The disclosed device includes an image viewer unit configured to show an image; a sensor unit configured to acquire a user's surrounding condition information; a determiner part configured to determine whether or not the user faces a dangerous condition based on information from the sensor unit; and an alarm information output part configured to output alarm information based on a determination result of the determiner part. The disclosed wearable display device makes it possible to increase the user's safety by effectively detecting dangerous objects, such as automobiles, and by suitably controlling the images on the device which may reduce the user's field of vision.

PCT No. PCT / US93 / 03615 Sec. 371 Date Dec. 20, 1994 Sec. 102(e) Date Dec. 20, 1994 PCT Filed Apr. 13, 1993 PCT Pub. No. WO93 / 21306 PCT Pub. Date Oct. 28, 1993The present invention relates to engineering attenuated viruses by altering a non-coding region or the coding sequence of a viral gene. Alterations of the non-coding regions which regulate transcription and / or replication are described. These alterations result in the down-regulation of the viral gene and an attenuation of the virus, either by the production of defective particles during replication, or by reducing the number of progeny virions produced during viral replication. Alterations of viral coding sequences are also described which result in a recombinant or chimeric attenuated virus.

The invention discloses natural plant mosquito-repellent liquid, which comprises the following raw materials in parts by weight: 40-60 of eatable ethanol, 1-10 of dementholized peppermint oil, 1-6 of citionella oil, 3-12 of wintergreen oil, 3-12 of citriodora oil, 3-12 of blumea oil, 3-12 of lavender oil, 1-5 of menthol, and 3-12 of rosemary oil. The natural plant mosquito-repellent liquid disclosed by the invention is prepared by adding enough eatable ethanol into a stainless steel container at first, adding other enough raw materials into the eatable ethanol to stir uniformly, filtering and tinning after standing for one day, emptying, storing, inspecting a semi-finished product, sterilizing a wrappage, filling, inspecting a finished product, and warehousing. The natural plant mosquito-repellent liquid disclosed by the invention is formed by scientifically refining a plurality of plant extract substances; the effective time for repelling mosquito bite outdoors is up to six hours; and the natural plant mosquito-repellent liquid is very obvious in effect and free from toxic and side effects and stimulation on human body.