45results about How to "Suitable for repeated use" patented technology

A device for detecting breathing of a subject, includes a colorimetric CO2 detector. A method for determining whether a subject is breathing and a method for verifying proper placement of an endotracheal tube when using a resuscitation bag are also described.

A mask facilitating breath comprises a mask body, a left ear rope sleeve and a right ear rope sleeve are fixed to the two sides of the mask body, an inner mask cup is arranged on the inner side of the mask body, filtering cotton is installed inside the inner mask cup and connected with an exhaust pipe, a fixed nut is arranged on the exhaust pipe and fixed to the center of the mask body, the exhaust pipe extends out of the mask body, exhaust holes are formed in the outer end of the exhaust pipe, an exhaust valve is arranged inside the exhaust pipe, an exhaust valve body is installed on the exhaust valve, one end of an air inlet pipe is fixed to one side of the inner mask cup, an air inlet valve is installed inside the bottom end of the air inlet pipe, the outer end of the air inlet pipe extends out of the outer side of the mask body, and activated carbon is arranged inside an outer end opening of the air inlet pipe. The air inlet valve is a one-way valve which can only allow entering and not allow leaving, and the exhaust valve is a one-way valve which can only allow leaving and not allow entering. Expiration and inspiration channels are isolated to effectively prevent filtered fresh air inside an air cavity from being polluted by exhalant gas, and the mask of the combined structure can be conveniently detached, cleaned and sterilized and is suitable for being used repeatedly.

The invention discloses recombinant escherichia coli of a temperature-control coexpression exogenous gene, which is named as Escherichia coli DT26 (pBVNsS) CCTCC NO:M 209018. The genotype of the recombinant escherichia coli is delta nagE::FRT; and the recombinant escherichia coli contain a temperature-control coexpression carrier pBVNsS. Simultaneously, the invention also discloses the application of the recombinant escherichia coli used as a catalyst for the complete cell catalytic preparation of N-acetylneuraminic acid. In the process of the large-scale catalytic production of the N-acetylneuraminic acid, the recombinant escherichia coli of the temperature-control coexpression exogenous gene has the characteristics of safe and convenient preparation of the catalyst, simple operation of the catalytic process, cheap price, higher efficiency, easy extraction and the like.

The invention relates to a method for realizing an embedded system board level supporting package between different operating system. The method comprises hardware abstraction, employing 'register base address plus shift' addressing mode on mass register to be accessed which can replace the presumption of the application and operating system environment to be called. The inventive method has capability and reusability which can accelerate the development and test flow process of the embedded system software including operating system and device driving software.

An object of the present invention is to provide a bioelectrode, which can stably measure biological information and is suitable for repeated use, and a method of manufacturing the bioelectrode. This object is solved by a bioelectrode comprising a silver coating layer provided on a conductive silicone rubber electrode, wherein the conductive silicone rubber electrode is composed of a silicone rubber containing conductive carbon particles, the silver coating layer is composed of silicone rubber and at least one of agglomerated silver powder and flake-like silver powder, and the silver coating layer has a thickness of 18 μm to 80 μm, and, preferably, in which the silver powder contains both the agglomerated silver powder and the flake-like silver powder.

The invention discloses a reference electrode clamp used for biological impedance, electric resistance or potential measurement, which comprises an upper clip, a lower clip with are integrated through a clamping shaft, one end of a spring is fixed on the inner side surface of the upper clip, the other end is fixed o the inner side surface of the lower clip, a conductor is arranged on the inner side surface of the lower clip as a reference electrode, one end of the line conductor is connected with the conductor, the other end of the line conductor is connected with the metering circuit.

The invention provides a method for extracting theophylline from tea leaves by using chloromethyl polystyrene resin. The method comprises the following steps: A, extraction of theophylline: preparing a chlorine salt solution, and soaking a tea medicinal material by using the chlorine salt solution for extraction; enrichment of theophylline: performing column chromatography and adsorption on an extracting solution by using chloromethyl polystyrene resin, performing elution after adsorption, collecting an eluent, and then performing reduced pressure concentration to obtain an extract; and C, purification: performing alumina column chromatography on the extract, then performing elution, collecting the eluent, then performing reduced pressure concentration, and performing refrigeration, crystallization, filtration and drying on a concentrated solution to obtain theophylline compounds. According to the method provided by the invention, a large amount of high-quality theophylline compounds can be obtained by virtue of four steps namely acidic chlorine salt solution extraction, macroporous adsorption resin enrichment, alumina column chromatography and crystallization. The four steps are mild in condition, high in adsorption efficiency and short in preparation cycle; and the method is simple in technological process and simple and convenient to operate, has low requirements for the technological level of operators, and is suitable for industrial popularization.

The corrugated cable co-axial connector includes a connection body (1), having an internal thread (12) in a connector through hole (11); a clamping nut (2), having a central through hole (21), having a cable end and a clamping end in an axial direction of the central through hole (21) which are opposite to each other, and having an external thread (22) at the clamping end; an annular elastic clip (3) which is axially slidingly fitted into the central through hole (21) of the clamping nut (2); and a resilient ring (4) sleeved around the annular elastic clip (3) and located between the clamping end of the clamping nut (2) and the annular elastic clip (3). When a corrugated cable (10) having a corrugated outer conductor (102) is received in the central through hole (21) of the clamping nut (2), the connector body (1) applies at least a radial inward force to the annular elastic clip (3) by the engagement of the external thread (22) and the internal thread (12), to lock the corrugated cable (10) in the annular elastic clip (3). The connector is simple to manufacture and is convenient to use. At the same time, it is able to ensure the reliable cable connection and is suitable for repeated use.

A pet training device including a generally cylindrical body and a pair of wings extending therefrom. Each wing includes a resilient stiffener element which tends to return a deflected wing back into a predeflected configuration. The body may define a head portion having a aperture through which a rope is secured, said rope being sufficiently sized to allow a user to grasp and throw the pet training device. The head portion may also be defined by an external head secured to the body via a flexible rope neck element. A method of using such a pet training device is also disclosed.

The invention provides a mobile house. The mobile house comprises a base, a lower side plate and an upper side plate, wherein the lower side plate is fixedly mounted on the base; the upper side plate is rotationally connected with the lower side plate; the mobile house further comprises fixing columns arranged at vertical corners of the house and used for fixedly supporting the lower side plate and the upper side plate, fixing mechanisms for connecting the base with the fixing columns and anti-loosening mechanisms for preventing the fixing mechanisms from loosening; and the fixing columns and the base are connected through the fixing mechanisms, the upper side plate and the lower side plate are fixedly supported, loosening of threaded sleeves is further effectively guaranteed by the aid of the anti-loosening mechanisms, so that the mobile house can be rapidly constructed, and the purposes of moving, dismounting and mounting are achieved.

The invention provides a novel shoe cover which structurally comprises shoe cloth and tightening belts and accordingly is simple in structure. When the novel shoe cover works, a shoe is placed in the center of the shoe cloth, then edges of the shoe cover are pulled up from the periphery of the shoe, an opening formed by the edges of the shoe cloth is tightened by the aid of the tightening belts, and accordingly the novel shoe cover is convenient to operate. When the novel shoe cover is cleaned and aired, the shoe cover can be laid flatly and forms a plane, so that the novel shoe cover is easy to clean and convenient to air. In addition, as the novel shoe cover is made of materials difficult to damage, the novel shoe cover can be reused and is energy-saving and environment-friendly. In conclusion, the shoe cover is applicable to family houses, computer rooms, cars, clean rooms and the like.

The invention relates to a catalyst for polyformaldehyde dimethyl ether synthesis. In the prior art, with the application of methanol, methylal and paraformaldehyde as reaction raw materials to synthesize polyformaldehyde dimethyl ether, the activity and the selectivity of the catalyst are low. A purpose of the present invention is mainly to solve the problems in the prior art. The technical scheme of the present invention comprises that by using the catalyst for polyformaldehyde dimethyl ether synthesis, the catalyst is the hybrid material of a sulfonic acid type polystyrene cation exchange resin and an alloy permanent magnet, the sulfonic acid type polystyrene cation exchange resin comprises a cross-linked polystyrene skeleton and a sulfonic acid group, and the alloy permanent magnet is at least one selected from AlNiCoTi80, AlNiCoTi36J, and AlNiCoTi40J. The catalyst of the present invention can be used in the industrial production of polyformaldehyde dimethyl ether.

The invention relates to a catalyst used for polyoxymethylene dimethyl ether synthesis. The catalyst mainly solves the problems of low catalyst activity and low selectivity of technologies for synthesizing polyoxymethylene dimethyl ether from methanol, methylal and paraformaldehyde in the prior art. The catalyst is a sulfonic acid type polystyryl cation exchange resin and alloy permanent magnet hybrid material, and the sulfonic acid type polystyryl cation exchange resin comprises a crosslinked polystyrene skeleton and a sulfonic group; and the alloy permanent magnet is selected from at least one of AlNiCo40, AlNiCo44 and AlNiCo52. The catalyst is used in industrial production of the polyoxymethylene dimethyl ether.

The invention discloses colored unfired pottery clay and a preparation method thereof. The pottery clay is prepared from, by mass, 55-60% of flour, 2-8% of magnesium chloride, 13-18% of magnesium oxide, 0.02-0.12% of toner, 1.2%-1.8% of diethylene glycol dibenzoate, 3-7% of a lemongrass extracting solution, 3-6% of vegetable oil and the balance water. The preparation method includes the steps that all the components are weighed, and magnesium chloride and magnesium oxide are mixed, ground and screened to obtain a first mixture; the flour is added into the first mixture and evenly stirred at the speed of 350-400 rpm to obtain a second mixture; the toner and diethylene glycol dibenzoate are added into the second mixture and stirred, then the lemongrass extracting solution, the vegetable oil and the water are added, and the materials are blended for 20-30 min to obtain the colored unfired pottery clay. The preparation process of the colored unfired pottery clay is simple, the pottery clay is high in plasticity, cost is low, and industrialization is facilitated.

The invention discloses a repeated-plastic oral cavity impression tray and manufacturing and using methods. The oral cavity impression tray is prepared from 85-99 parts (by weight) of memory high-polymer material, 0.05-1 part (by weight) of antibacterial agent and 0.05-1 part (by weight) of pigment. The oral cavity impression tray is prepared from the memory high-polymer material through injectionmolding, and the size of the impression tray can be adjusted according to an oral cavity tissue size of a patient, so that the degree of comfort of the patient during impression is increased; the tray is high in deformation, remarkable in memory effect and low in induction temperature and is suitable for being used repeatedly; and the oral cavity impression tray is doped with the antibacterial agent and can be disinfected automatically, so that a disinfection process is avoided, and resources of hospitals are saved.

The invention relates to a goggle controller. A collecting electrode can hiddenly and firmly fit the face of a user by utilizing a contact surface in a goggle frame structure; on one hand, a sticky substance for attaching the collecting electrode to the face of the user can be saved, the wearing comfort of the user is improved, and the collecting electrode is more suitable for repeated use; on theother hand, the influence of the outside on the collecting electrode is reduced, and the reliability of the electro-oculogram collecting process is improved; besides, with goggles as a basic frame, the structural strength and durability of the controller are ensured; in addition, the scheme integrating electro-oculogram and head posture control enriches the control dimension of the goggle controller, and the goggle controller can be adjusted to be an intelligent controller with specific control functions according to different use scenes and has broad application extensibility.