51results about How to "Inexpensive and easy to operate" patented technology

To provide variable resilient support for the deck of an exercise treadmill one or more resilient members are secured to the deck and a moveable support member is used to selectively engage the resilient members to provide support for the deck. A user operated adjustment mechanism can be used to move the support member or support members longitudinally along the treadmill thus effectively changing the number of resilient support members supporting the deck.

One example embodiment is a device for detecting fullness of a bladder of a subject. The device includes a distension sensor, an electromyography (EMG) sensor and a microcontroller. The distension sensor is located on a waistband of a pant and detects changes to a curvature of skin adjacent the bladder. The EMG sensor is located in the pant and includes two EMG electrodes that detect potential difference caused by contractions of the bladder. The microcontroller processes signals received from the distension sensor and the EMG sensor and generates, based on the signals, an output value that indicates the fullness of the bladder.

The invention provides a treating method for thallium-containing wastewater. The treating method comprises the following steps: 1) adding an oxidizing agent into the thallium-containing wastewater for oxidizing; 2) performing sedimentation treatment including sodium sulphide sedimentation and flocculant sedimentation on the thallium-containing wastewater subjected to oxidizing treatment; 3) adopting an adsorbent for absorbing the supernatant liquid obtained in the step 2), thereby finishing the treatment for thallium-containing wastewater, wherein styrene-divinyl benzene copolymer is taken as the adsorbent. The treating method for thallium-containing wastewater, provided by the invention, comprises the processes of oxidizing treatment, sedimentation treatment and adsorption treatment; the sedimentation treatment comprises the two steps of sodium sulphide sedimentation and flocculant sedimentation; an oxidation-sedimentation-adsorption combined technique is combined with a physical chemistry method, so that secondary pollution is not caused; according to the treating method provided by the invention, the treating condition is easy to control and thallium in the wastewater can be extremely removed; the raw materials required by the treating method provided by the invention are easily acquired and low in cost; the operation is simple; the running cost is greatly lowered.

This invention has offered a chemosynthesis method to AE-activity ester, using ATMAA, dibenzthiazole sulfide, triphenylphosphine as raw materials, in existing of catalyst, after sufficient response of the organic solvent, filter the reaction solution, filter cake is washed and dried to get stated AE-activity ester, join di(trichloromethyl)carbonic acid ester in filtrate, the reaction gets dibenzthiazole and triphenylphosphine, stated benzthiazole sulfide and triphenylphosphine can be recycled after being retrieved. This invention has advanced craft route, rational process conditions, cheap and easy getting raw materials, simple and safe operation.

A vehicle safety mechanism comprising a seatbelt buckle containing numerous variants of a piercing point or glass breaking mechanism that can be utilized to break open a vehicle window in the event of an emergency. In numerous embodiments, a set of finger grips and a cover for the piercing point are illustrated.

The invention discloses a soybean biological base fuel cell oxygen reduction catalyst and a preparation thereof. The preparation method comprises the following steps of 1) preparing graphene oxide; 2)taking graphene oxide as a carrier and taking soybean as a carbon source, performing carbonization treatment through a hydrothermal method to obtain a precursor; and 3) performing pyrolysis and reduction on the precursor in an ammonia gas atmosphere to obtain the soybean biological base fuel cell oxygen reduction catalyst. The soybean biological base fuel cell oxygen reduction catalyst is used for catalyzing an oxygen reduction reaction of a fuel cell. The soybean biological base fuel cell oxygen reduction catalyst is prepared through a simple method by taking low-cost natural biomass soybeanas the raw material and by taking graphene as the carrier for performing pyrolysis and reduction in the ammonia gas atmosphere at a temperature of 800 DEG C. The catalyst is excellent in oxygen reduction performance and can be widely applied to the fuel cell.

A mine clearing device comprises a substantially hollow body forming a cavity. An eccentric ballast is disposed within the cavity and is rotated by a motor powered by an internal power source, thereby imparting rotational motion to the device. A plurality of anti-axial projections of varying lengths and sizes are mounted on the outer surface of the body to interact with the terrain and, thus, impart unbiased motion to the body as it rotates and traverses a mine field. The outer surface of the body is made of blast resistant material. A shock absorbent material, disposed within the cavity, absorbs the explosive force of mines. Circuitry or a marker substance may be used to record or mark the path traveled by the device.

A mine clearing device has an outer body forming a cavity capable of holding a pressurized substance, a conduit in the outer surface for expelling the pressurized substance from the body to thereby cause the device to rotate and traverse a mine field, and a plurality of anti-axial projections on the surface of the outer body that interact with the terrain to impart unbiased motion to the body as it rotates. A regulator controls the flow of the substance and a nozzle directs it as it exits the conduit. The outer body is made of blast resistant material. A shock absorbent material, disposed within the shell, absorbs the explosive force of mines. Circuitry or a marker substance may be used to record the position of the device.

The invention provides a method for synthesizing a natural product Tarchonanthuslactone isomer. According to the method, methyl-3-hydroxybutyrate is used as a raw material, and PMB ester protection, LiALH4 reduction, Swern oxidation, Mukaiyama Aldol reaction, ester hydrolysis, Yanaguchi cyclization, de-protection and condensation are performed, so that the natural product Tarchonanthuslactone isomer is obtained. The synthetic route is novel and reasonable in design, the raw materials are cheap and easy to obtain, the operation process is simple and convenient, the reaction condition is mild, the rate is high, side reaction is less, the operation is simple and convenient, and the synthesizing cost is greatly reduced.

The invention discloses a composite catalyst for purifying indoor formaldehyde and a preparation method thereof. The catalyst is prepared from 99-90% by weight of a carrier and 1-10% by weight of metallic ion-doped MnO2 powder, the carrier contains activated carbon powder, activated carbon fiber powder or molecular sieve porous ultrafine particles, and the doped metallic ions are silver, copper orzinc ions. The preparation method comprises the following steps: using KMnO4 and MnSO4 as raw materials for preparing MnO2 powder, enabling a KMnO4 solution to be adsorbed on the carrier by immersionadsorption, and enabling a reducing agent MnSO4 solution to react with the KMnO4 on the carrier, so MnO2 powder generated by the reaction directly deposits on the surface of and inside the carrier; and immersing the carrier in a 0.5-2.0% doping metallic ion solution, and performing rotary evaporation and drying at 100 DEG C to prepare the MnO2/carrier compound type catalyst containing dopant ions.

The invention discloses a method for synthesizing acetanilide derivatives, and belongs to the technical field of organic synthetic intermediates. The method particularly includes steps of adding aniline derivatives, potassium thioacetate, tert-butyl nitrite and acetonitrile into reaction tubes; tightening plugs of the reaction tubes; carrying out magnetic stirring reaction at the temperature of 25DEG C for 4 hours. The aniline derivatives and the potassium thioacetate which is low in cost and easy to operate, is easily available and is stable are used as acetylation reagents, and accordinglya series of acetanilide derivatives can be efficiently synthesized by the aid of the method under the room-temperature conditions. The acetanilide derivatives which are compounds contain arylamine skeletons and can be used for synthesizing and modifying organic synthetic intermediates and medicines, and novel and effective synthesis processes can be provided to screening medicines. The reaction can be accelerated by the tert-butyl nitrite to synthesize the compounds which are the acetanilide derivatives. Compared with existing synthesis methods, the method has the advantages that reaction conditions are simple, raw materials for the acetanilide derivatives are low in cost and easy to operate, are easily available and are stable, and functional groups of substrates are good in tolerance.

The invention discloses a stereo-selective synthesis method of a 6beta-hydroxymorphine derivative. The synthesis method comprises the following steps: (i) reducing a compound of a formula VI to a compound of a formula VII by sodium borohydride in a hydrophilic organic solvent in the presence of a catalytic amount of a C1-C4 alkanoic acid; and (ii) separating the compound of the formula VII obtained in the step (i) to obtain a compound of a formula VIII, wherein definitions of substituents in the formula VI, the formula VII and the formula VIII are detailed in the specification.

The present invention is process of synthesizing fexofenadine intermediate (+/-)-4-[1-hydroxy-4-[4-(hydroxyl dipenyl methyl)-1-piperidino]-butyl]-alpha, alpha-dimethyl phenylacetate. The process includes catalytic hydrogenation reaction, addition reaction, and product separating purification. The process has atomic utilization rate of 100 %, facile cheap material, high operation safety, short reaction period, high yield, high product quality and less environmental pollution, and is suitable for industrial production.

The invention discloses a preparation method of a 7-amide indole compound. The method comprises the following steps of: in an HFIP solvent, synthesizing the 7-amide indole compound at room temperatureby using [Ru (p-cymene) Cl2] 2 and AgSbF6 as catalysts, using pivalic acid as an additive and using an indole compound and an oxazolone compound as substrates. The reaction raw materials are cheap and easy to obtain; the preparation method is simple; ruthenium is used as the catalyst, so that the reaction cost is low, the yield is high, the operation is simple; and the method is suitable for synthesizing different types of 7-amide indole compounds. The method disclosed by the invention can be used for synthesizing a series of 7-amide indole compounds, and the synthesized product can be used as an intermediate compound for further constructing a complex active compound; and meanwhile, the compound has great drug activity potential.

The invention designs a polyimide diamine monomer C12-FBDA with an innovative structure. The simultaneous introduction of C12 side-chain alkyl, trifluoromethyl, an imide group and multiple benzene ring structures is realized in the molecular structure, the regularity and crystallinity of polymer molecular chains are broken through, the free volume of the polymer is increased, and the interaction between the molecular chains is reduced, so that the film-forming property and optical transparency of polyimide are greatly improved. In the aspect of C12-FBDA synthesis, the invention develops an industrially applicable C12-FBDA production process, and the process has the advantages of short synthesis route, high yield, cheap and easily available used raw materials, low production cost, simple operation, environmental friendliness, complete realization of large-scale mass production, and extremely high industrial application value.

The invention designs a polyimide diamine monomer C14-FBDA with an innovative structure. Simultaneous introduction of C14 side chain alkyl, trifluoromethyl, imide group and multiple benzene ring structures into the molecular structure is realized. According to the polyimide diamine monomer, the regularity and crystallinity of polymer molecular chains are broken through, the free volume of the polymer is increased, and the interaction between the molecular chains is reduced, so that the film-forming property and optical transparency of polyimide are greatly improved. In the aspect of C14-FBDA synthesis, the invention develops an industrially applicable C14-FBDA production process, and the process has the advantages of short synthesis route, high yield, cheap and easily available used raw materials, low production cost, simple operation, environmental friendliness, complete realization of large-scale mass production, and extremely high industrial application value.

The invention designs a polyimide diamine monomer C5-FBDA with an innovative structure. C5 side chain alkyl, trifluoromethyl, imide groups and a plurality of benzene ring structures are introduced simultaneously in the molecular structure of the polyimide diamine monomer, the regularity and crystallinity of polymer molecular chains are broken through, the free volume of the polymer is increased, the interaction between the molecular chains is reduced, and the film-forming property and optical transparency of polyimide are greatly improved. In the aspect of synthesis of C5-FBDA, the invention develops an industrially applicable production process of C5-FBDA, and the process is short in synthesis route, high in yield, cheap and easily available in used raw materials, relatively low in production cost, simple and convenient to operate, environment-friendly, capable of completely realizing large-scale mass production and extremely high in industrial application value.

The invention designs a polyimide diamine monomer C11-FBDA with an innovative structure. Simultaneous introduction of C11 side chain alkyl, trifluoromethyl and imido groups and multiple benzene ring structures is realized in the molecular structure, the regularity and crystallinity of a polymer molecular chains are broken through, the free volume of the polymer is increased, and the interaction between the molecular chains is reduced, so that the film-forming property and optical transparency of polyimide are greatly improved. In the aspect of C11-FBDA synthesis, an industrially applicable C11-FBDA production process is developed in the invention, and the process has the advantages of short synthesis route, high yield, cheap and easily available used raw materials, low production cost, simplicity in operation, environmental friendliness, complete realization of large-scale mass production, and extremely high industrial application value.