38results about How to "High risk factor" patented technology

The embodiment of the invention provides a user behavior check method and device. The method comprises the steps of determining detected abnormal behaviors as risk coefficients with different levels; carrying out corresponding verification according to the risk coefficients of the abnormal behaviors; when the risk coefficients of the abnormal behaviors are greater than a preset risk coefficient threshold, employing a verification method with relatively high security; generating verification codes through utilization of user behavior logs; and carrying out security verification on user identities through utilization of the verification codes. According to the embodiment of the invention, the verification codes are obtained in association with the user behavior logs, so the verification codes can be dynamically changed according to the changes of the user behavior logs and are not liable to be broken by a network hacker, a user identity verification security coefficient is guaranteed to be relatively high, and the method and the device are relatively reliable and are simple in operation and high in user experience.

The invention discloses a method for preparing p-phenylenediamine. A reduction reaction is carried out on paranitroaniline with hydrogen in the presence of a catalyst. According to the preparation method, the temperature, pressure and reaction time in the reduction reaction are controlled, and the conversion rate of p-phenylenediamine is controlled. According to the method, a hydrogenation reduction production mode is adopted, environment-friendly production is achieved, pollution is low, the conversion rate of paranitroaniline is increased, and high-purity p-phenylenediamine is obtained.

The present invention provides a method for preventing or reducing the risk of cancer or the progression of premalignant dysplasia in a subject having a higher risk factor by administering a therapeutically effective amount of prostacyclin analog.

The invention discloses a no-load tramcar weighing feedback supervision system based on a static track, relates to the technical field of weighing feedback supervision, and solves the technical problem that the weighing of a tramcar cannot be predicted and supervised in the prior art. By predicting and supervising the weighing of the tramcar, the situations that accidents of the tramcar occur in the loading process; the phenomenon that the tramcar is overloaded or insufficient in tonnage occurs, so that the loading efficiency is reduced, and the transportation progress is influenced, are prevented; a sliding track corresponding to the loaded tramcar is detected, and whether the track is matched with the tramcar or not is judged, so that risks of the tramcar in the loading process are reduced, and the situation that the loading efficiency is reduced due to the unstable standing of the tramcar is prevented; whether the environment temperature influences a weighing zero point or not is judged, and the situations that the weighing zero point is abnormal, so that the weighing efficiency is reduced, the loading weight of the tramcar is influenced, the tramcar is overloaded or insufficient in tonnage, the transportation efficiency is reduced, and meanwhile a transportation danger coefficient is increased, are avoided.

The invention discloses a lifting type elevator shaft operation platform using a triangular supporting frame and a screw opposite-pulling system. The lifting type elevator shaft operation platform comprises a platform, a plurality of triangular supporting frames are arranged below the platform, and the triangular supporting frames are uniformly distributed on two sides of the platform; the triangular supporting frames are fixedly connected to a concrete wall in an elevator shaft through wall penetrating bolts, a plurality of split bolts are arranged on the two opposite vertical faces of the concrete wall correspondingly, the split bolts are located under the triangular supporting frames and horizontally fixed into the concrete wall, the two ends of the split bolt extend outwards correspondingly to form a limiting structure of the triangular supporting frame, and lifting pull rings are arranged on the edges of the two sides of the upper portion of the platform correspondingly and fixed to the platform in a welded mode. By means of the triangular supporting frame and the screw opposite-pulling system, operation is easy and convenient, safety, high efficiency, flexibility and convenience are achieved, portability of the operation platform is guaranteed, input of materials is reduced, the turnover rate of the operation platform is increased, and the application range is widened.

The present invention relates to the technical field of product security, and in particular, relates to an anti-counterfeit method and system. The method comprises: S1: a mobile intelligent terminal reads an anti-counterfeit code and sends to an anti-counterfeit verification server the anti-counterfeit code and an identification number corresponding to the mobile intelligent terminal; S2: the anti-counterfeit verification server determines whether a received anti-counterfeit code is valid, if so, then executes Step S3, if not, then returns information indicating that the anti-counterfeit code is invalid; S3: the anti-counterfeit verification server determines through a received terminal identification number, if the terminal is a current owner of the anti-counterfeit code or a trial user having a checkable count of the anti-counterfeit code, if so, then returns information indicating that a product is authentic, if not, then returns information of the terminal being without an anti-counterfeit authority. Since embodiments of the present invention are based on a highly popular mobile phone terminal, a user can easily operate an anti-counterfeit system, and completes an anti-counterfeit query process, resulting in a low cost and simple verification.

The invention discloses a synthesis method of vismodegib. The method comprises the following reactions: firstly, enabling 2-chloro-5-nitrophenyl boronic acid and 2-bromopyridine to make a coupled reaction to generate an intermediate 2-(2-chloro-5-nitro) phenylpyridine; reducing nitro in the 2-(2-chloro-5-nitro) phenylpyridine to amino so as to obtain 2-(2-chloro-5-amino) phenylpyridine; finally, enabling the 2-(2-chloro-5-amino) phenylpyridine and 2-chloro-4-methyl sulfuryl benzaldehyde to make a catalytic reaction to generate the vismodegib. The synthesis method is low in price of raw materials, easy in raw material obtaining, simple and convenient to operate and less in consumption of a catalyst; the reaction product is high in yield, reaction conditions are mild, and aftertreatment is simple in technology and mainly adopts column separation, so that industrial mass production can be realized.

The invention discloses a production method for carbon microspheres and a used device thereof, belonging to the technical field of carbon microsphere production. The production method comprises the following steps: subjecting raw-material liquid modified asphalt from a tar workshop section to uniform mixing under stirring, then carrying out heating and pressurizing in a closed space in a constant speed, starting natural cooling and depressurizing, then mixing the liquid modified asphalt and lightweight wash oil so as to form a mixed material, subjecting the mixed material to separation through a centrifuge, and during operation of the centrifuge, allowing mixed oil to be separated from the lower part of the centrifuge; and allowing a carbon microsphere raw material to be separated from the interior of the centrifuge, and subjecting the separated carbon microsphere raw material to drying treatment so as to produce the carbon microspheres. The device provided by the invention comprises a sedimentation tank, wherein two reaction vessels are arranged above the sedimentation tank; each reaction vessel is correspondingly arranged on a weighing measuring unit used for weighing the reaction vessels; the bottom part of each reaction vessel is provided with a pipeline communicating with the sedimentation tank; and each pipeline is provided with a valve. The device provided by the invention has the characteristics of low production cost, high production efficiency, high product quality, safety, environmental protection, etc.

The invention discloses a static rail-based weighing feedback supervision system for empty mining vehicles, relates to the technical field of weighing feedback supervision, and solves the technical problem that the weighing of mining vehicles cannot be predicted and supervised in the prior art. Weighing is used for forecasting and supervision to prevent accidents during the loading process of mine cars, such as overloading or loss of tons of mine cars, which will reduce loading efficiency and affect the progress of transportation; detect the sliding track corresponding to the loaded mine car to determine whether the track is in line with the mine Vehicle adaptation, reduce the risk of mining vehicles in the loading process, prevent the mining vehicles from standing still and cause the loading efficiency to decrease; determine whether the ambient temperature has an impact on the zero point of weighing, and prevent the abnormal zero point of weighing from reducing the weighing efficiency, thereby affecting The loading weight of the mine cart will cause the mine cart to be overloaded or lose tons, which reduces the transportation efficiency and increases the risk factor of transportation.

The invention provides a lifting pin elastic limiting mechanism of a slewing mechanism. The mechanism comprises a lifting pin, a spring and a mounting plate, wherein the spring is a rectangular spiral spring, the lifting pin is connected with one end of the spring, the other end of the spring is connected with the mounting plate, the lifting pin comprises a lifting pin spherical front end and a lifting pin step, and the lifting pin step is connected with the bottom of the lifting pin spherical front end. The mounting plate comprises screw holes and a mounting plate center groove, the mounting plate center groove is located in the center of the mounting plate, and the screw holes are located in the two sides of the mounting plate. According to the lifting pin elastic limiting mechanism of the slewing mechanism, although the lifting pin elastic limiting mechanism is simple in structural form, the lifting pin elastic limiting mechanism has practicability, and the cost of components is low.

The invention discloses a synthetic method for the hormone intermediate androsten-17alpha-methyl-17beta-ol-3-one. The synthetic method comprises the following steps: adding androsten-17-alpha-methyl-2beta,3beta,17beta-triol-4-amine and a diphenyl ether solution into a reaction vessel, controlling solution temperature and a stirring speed, adding a potassium nitrate solution and continuing a reaction; and adding a propyl valerate solution, raising solution temperature, adding tetrakis(phosphorus trichloride)nickel powder in batches, continuing the reaction, carrying out washing with a cyclohexane solution, then carrying out washing with a sodium bromide solution, then carrying out washing with a methyl propyl ether solution, carrying out recrystallization in a cyclopentanol solution, and then carrying out dehydration with a dehydrating agent so as to obtain the finished androsten-17alpha-methyl-17beta-ol-3-one.

The invention relates to the field of steam boilers, in particular to an instant-heating inverted-T-shaped steam boiler. The instant-heating inverted-T-shaped steam boiler comprises a steam boiler body and at least one heating device, wherein the steam boiler body comprises a vertical boiler body and a horizontal boiler body which are arranged in a mutual perpendicular mode and are communicated, the horizontal boiler body is arranged under the vertical boiler body, two ends of the horizontal boiler body are closed, a cover body is arranged at the top of the vertical boiler body, and a steam outlet is formed in the cover body. The heating devices are arranged at the position of the port of the horizontal boiler body and are in contact with water inside the steam boiler body. The instant-heating inverted-T-shaped steam boiler can quickly produce high-temperature steam, the safety of the steam boiler in operation is improved while the size of the steam boiler is decreased.

The invention relates to the field of natural drugs and chemical drugs, in particular to a manufacturing method for deoxypodophyllotoxin. The manufacturing method provided by the invention has the characteristics that the deoxypodophyllotoxin can be obtained through the reaction of podophyllotoxin with NaBH4 and CF3COOH, namely, podophylotoxin is reduced to deoxypodophyllotoxin by addition of with a reducing reagent and protonic acid. According to the invention, the applied materials have wide source and low price, so that the manufacturing method is applicable in industrial production.

The invention relates to a steel structure profile connecting member. The connecting member comprises a No.1 butt jointing device and a No.2 butt jointing device which are connected through retainingthreaded straight bars, a push rod mechanism is mounted on the front side of the lower end of the No.1 butt jointing device, a clamping mechanism is mounted on the back side of the lower end of the No.2 butt jointing device, and the structures of the No.1 butt jointing device and the No.2 butt jointing device are the same. The jointing member can solve the following problems during connection of existing steel channels: 1, welding is required at connection positions during connection of traditional steel channels, smoke produced during welding affects physical health of workers, and steel structure profiles after welding are troublesome to dismount; and 2, traditional steel channels can greatly damage profiles during threaded connection, so that mechanical performance of profiles in connection positions of steel channels is substantially reduced, follow-up use of the steel channels is affected, connection positions can become dangerous points of whole steel channels, so that the dangercoefficient of a support frame spliced by steel channels is increased.

The invention relates to a preparation method of a polymer electrolyte with cellulose as an additive, which relates to a preparation method of a lithium ion battery polymer electrolyte membrane. The invention does not use liquid electrolyte, which improves the safety of battery use. The preparation method of the present invention is as follows: 1. Pre-treatment of materials; 2. Dissolving polyvinylidene fluoride and hydroxypropyl methylcellulose in N,N dimethylformamide fiber to prepare cellulose solution; 3. Prepare the casting solution of the electrolyte by mixing method; 4. Cast the casting solution to form a film to prepare the polymer electrolyte. The invention uses a blending method and a casting method to prepare the polymer electrolyte, and the method is simple to operate, easy to prepare, high in safety and strong in controllability. The invention is applied to the field of lithium ion batteries.

The invention discloses an intelligent linear pneumatic device. The device is a linear pneumatic execution unit formed by a cylinder, a pulling-rope encoder, three groups of six-position five-way integrated valves, a control circuit module, and a communication module etc. highly integrated in an integrated structure according to the function requirement. According to the intelligent linear pneumatic device, the size is small, accurate control of the stretching or retraction distance and speed of a cylinder piston rod can be realized, each intelligent execution unit can independently work and can also work with other intelligent units in a cooperative manner, the production line is formed in the manner of wired communication or wireless communication, the flexibility of the re-design and combination of the whole production line is higher, the adjusting period of the production line is short, the cost is low, programming and configuration of the intelligent linear pneumatic device can be realized on the site, networking, accuracy, and flexibility of control are realized, and the market prospect is wide.

The invention discloses a bent beam skeleton membrane structure environment-friendly silo.The bent beam skeleton membrane structure environment-friendly silo structurally comprises a ground, a reinforced concrete foundation support, a straight H-shaped steel, and a bent H-shaped steel;the bent H-shaped beam is arranged at the top of the reinforced concrete foundation support, the H-shaped shape formed by a web,an upper flange plate, and a lower flange plate, the using amount of steel plates as a whole is greatly reduced, the investment is made less, amembrane materialcan be more conveniently arranged at the top of the bent H-shaped beam,meanwhile the cross section has a small height, the node is simple, the force is clear, and the beneficial effects that the investment is lower, the bearing capacity is larger, the membrane material is easy to install, the structure is safe, and the cross section height is small areachieved.