66results about How to ""Stable" patented technology

A hydrocarbon drilling fluid system is disclosed including a hydrocarbon fluid and a foaming composition, where the foaming composition includes a polymer, a gelling agent and its cross-linking agent, an optional foaming agent, or mixtures or combinations thereof. Uses of this drilling fluid system in a variety of downhole application are also disclosed.

A process for manufacturing a material, (medium or matrix) to hold or encapsulate sensing molecules with enhanced sensitivity to oxygen gas and dissolved oxygen by mixing a platinum compound with sol-gel monomers and then coating the tip of an optical fiber is disclosed. The sol-gel polymerizes, trapping the platinum compound in an oxygen permeable glass like solid. The high quenching efficiency of the Pt compound upon oxygen exposure makes the sensor extremely sensitive to oxygen partial pressure variations and also resistant to exposure to hydrocarbons.

A pneumostoma assessment and treatment system includes methods and devices for aftercare of a pneumostoma. In particular, methods and devices are provided for standardized monitoring and assessment of pneumostoma patency thereby facilitating the establishment of standards-based protocols for pneumostoma management. Methods of standardized pneumostoma patency assessment includes the use of devices for raising alveolar pressure to a controlled repeatable pressure above ambient while analyzing gas flow through the pneumostoma. In response to an assessment the functionality of the pneumostoma, the tissues of the pneumostoma may be treated with a treatment device utilizing one or more different modalities to preserve or enhance the health and function of the pneumostoma.

To provide a wireless multi-hop network in which the stable bandwidth ensured communication can be made without causing a collision of time slots due to the terminal movement or reserving the slot again due to a route change on the path of end-to-end communication. A terminal makes a slot allocation request for 3 Hops to a slot allocation server. Since unique slots within the network are allocated by the slot allocation server, there is no interference with the slots by other terminals. The terminal transmits the packet by inserting the slot information into an option header. A forwarding terminal that forwards the packet decides the transmission slot based on the slot information in the option header and its own hop count at the time of forwarding the packet.

The invention discloses an epoxy matrix resin, a prepreg, a preparation method of the prepreg and a device for preparation of the prepreg, in order to solve the problem of poor performance of an epoxy matrix resin curing substance caused by uneven toughening phase state even no phase separation in the traditional epoxy matrix resin curing product, the problem of complex technique of the traditional preparation method of the prepreg and relatively imprecise control on the resin content in the prepreg, and the problem of high manufacturing cost of the traditional device for preparing the prepreg. The epoxy matrix resin is prepared from a phenolic epoxy resin, a bisphenol A epoxy resin, a core shell polymer, a curing agent and a curing accelerator; the prepreg is prepared from the epoxy matrix resin and fiber woven cloth; and the prepreg is prepared through the device for producing the prepreg by a heat fusion method. After and before the resin is cured, the toughening phase state is not changed and is uniformly dispersed; and the toughening phase state effect is good and stable. The mechanical property of the composite material obtained by curing with the prepreg is high.

The present invention relates to a compound represented by the formula (1)wherein Xa and Xb are each independently X1 or X2;s is 1 or 2,R4 is an alkyl group having 1-6 carbon atoms,na and nb are each independently 0 or 1,R1a and R1b are each independently an alkylene group having 1-6 carbon atoms,R2a and R2b are each independently an alkylene group having 1-6 carbon atoms,Ya and Yb are each independently an ester bond, an amide bond, a carbamate bond, an ether bond or a urea bond, andR3a and R3b are each independently a sterol residue, a liposoluble vitamin residue or an aliphatic hydrocarbon group having 12-22 carbon atoms,and use thereof.

The invention discloses a voice experience quality evaluation platform based on QoS (quality of service) and an evaluation method, and the evaluation method comprises the following steps: step one, a voice playing module adopts an audio player to play a voice source file, send voice signals and simulate pronunciation behaviors; step two, a first voice transmission module encodes the voice signalsand transmits the encoded voice signals to a network simulation module; step three, the network simulation module simulates an IP network environment so as to realize simulation of network parameters; step four, a second voice transmission module receives and decodes the voice signals transmitted by the network simulation module; step five, a voice recording module records and stores the decoded voice signals to form a voice target file and simulate audition behaviors; and step six, a voice quality evaluation module evaluates and detects the experience quality of the voice target file transmitted by the network simulation module. In the invention, the overall transmission process of voice signals from a mouth to ears can be simulated, thus having better authenticity, safety, accuracy and repeatability.

A flexible pneumostoma management device maintains the patency of a pneumostoma while controlling the flow of material through the pneumostoma. The pneumostoma management device includes a pneumostoma vent having a tube which enters the pneumostoma to allow gases to escape the lung, a flange and a filter / valve to control flow of materials through the tube. The flange is a thin flexible patch comprises of multiple thin layers of materials and which conforms and attaches to the chest of the patient. The flange includes a filter, a protective outer layer and an inner hydrocolloid layer. The flange secures the tube in position in the pneumostoma. An indicator responsive to gases exiting the pneumostoma is integrated into the device and provides and external indicia of the patency and efficacy of the pneumostoma.

A flexible pneumostoma management device maintains the patency of a pneumostoma while controlling the flow of material through the pneumostoma. The pneumostoma management device includes a pneumostoma vent having a tube which enters the pneumostoma to allow gases to escape the lung, a flange and a filter / valve to control flow of materials through the tube. The flange is a thin flexible patch which conforms and attaches to the chest of the patient. The flange secures the tube in position in the pneumostoma. The device has features to control secretions from the pneumostoma. The secretion management features include, ridges, pores, absorbent materials, and combinations thereof.

The invention discloses an auxiliary rehabilitation exercise device for realizing finger rehabilitation exercise. The device comprises a bracket and a finger support arranged on the bracket. One end of the bracket is provided with a first shaft, and one end of the first shaft is connected with a motor; the other end of the bracket is provided with a second shaft, one end of the second shaft is connected with a magnetorheological fluid damper, and the other end of the second shaft is connected with the other end of the first shaft by a spring; the finger support is fixed on the second shaft, the second shaft is also provided with an angular transducer for measuring angular displacement of the second shaft and a force transducer for measuring torque of the second shaft. Compared with the prior art, the device combines active and passive finger rehabilitation exercises, is especially suitable for the rehabilitation exercise of single wounded finger. Meanwhile, the device has simple and compact structure and low machining precision requirement.

The invention provides basalt fiber and glass fiber mixed reinforced resin, as well as a preparation method and application thereof, and relates to the technical field of composite materials. The preparation method comprises the following steps: adding a coupling agent into a graphene oxide solution to treat mixed fiber consisting of basalt fiber and glass fiber, and carrying out the low temperature plasma process to obtain a modified reinforced material; preparing the basalt fiber and glass fiber mixed reinforced resin from the modified reinforced material and nano-zirconia-blended thermosetting resin through a curing molding process. The preparation method is simple in process; a fiber reinforcing body and resin are both subjected to certain modification treatment, so that the reinforced resin is extremely high in consistency; meanwhile, with the excellent characteristics of the basalt fiber and the glass fiber, the reinforced resin is high in mechanical property and corrosion resistance, can be applied to the field of building materials, and has a good development and application prospect.

A combined imaging apparatus having a magnetic resonance imaging apparatus with at least one transmitting coil for exciting the matter of a body under examination or of a part thereof and at least one coil for receiving the signals transmitted by the body under examination or a part thereof, as well as an electronic unit for processing the received signals to create a diagnostic image and including a device for supporting and / or guiding at least one diagnostic and / or therapeutic tool. The combined apparatus further including an echographic imaging apparatus.

The invention discloses a fiber-optic gyroscope resonant cavity chip based on a tunable surface plasmon coupler. The chip comprises a first embedded polarization maintaining optical fiber and a second polarization maintaining optical fiber, which are used to conduct optical signals and stabilize the polarization state of the optical signals; an embedded curved polarization maintaining optical fiber; and a tunable surface plasmon coupler, which is used to adjust the coupling ratio of resonant cavity and realize single-polarization transmission of optical singles in the resonant cavity. The embedded curved polarization maintaining optical fiber and the tunable surface plasmon coupler form a resonant cavity; and the tunable surface plasmon coupler is a surface plasmon waveguide coupler. The first embedded polarization maintaining optical fiber, the second embedded polarization maintaining optical fiber, and the embedded curved polarization maintaining optical fiber are embedded in the peripheral layer of the tunable surface plasmon coupler and butt-jointed with the tunable surface plasmon coupler. The polarization maintaining optical fibers and the tunable surface plasmon coupler are integrated in a same chip, and the whole solid state of chip is realized, so the resonant cavity is more stable compared with conventional resonant cavity of fiber-optic gyroscope, and polarization noise is eliminated.

An information recording medium according to the present invention includes an information recording layer on which information is recordable, and is evaluated using an evaluation index which is found based on a ratio of a center of an amplitude of a reproduction signal corresponding to a second shortest mark and a second shortest space, with respect to a center of an amplitude of a reproduction signal corresponding to a longest mark and a longest space.

The invention provides a waterborne polyurethane wallpaper glue comprising the following raw material components in parts by weight: 100 parts of waterborne polyurethane resin; 0.1-0.5 part of a wetting levelling agent; 0.1-1.0 part of a mildew preventive; and 0.2-1.0 part of a thickener. The obtained wallpaper glue is simple in construction process, a layer of base film (having an alkali-resistant sealing effect) is not required to be brushed on a wall body before pasting, and the waterborne polyurethane wallpaper glue is directly brushed on wallpaper and then is pasted on the wall body; the waterborne polyurethane wallpaper glue has excellent alkali resistance; a prepared waterborne polyurethane wallpaper glue film is not abnormal when soaked in a 10% sodium hydroxide solution for 72 h and can resist hydrolysis for five years or more; the waterborne polyurethane wallpaper glue has the advantages of stable storage, safety and environmental protection, no release of formaldehyde, and high product pasting fastness, and has the tear strength after pasting and drying reaching 40 N or more; and the waterborne polyurethane wallpaper glue is convenient to construct, has no need for blending, can be directly brushed, and overcomes the disadvantage that a starch glue and a glutinous rice glue are slow to dry when applied in winter.

The invention belongs to the field of the genetic engineering, and particularly provides a group of DNA methylation biomarkers for evaluating cardiac muscle cell damage and an application thereof. TheDNA methylation biomarker comprises 30 DNA methylation sites of 5 DMRs corresponding to 5 cardiac muscle differentiation key factors; and the five cardiac muscle differentiation key factors are GATA4, TNNT2, TNNI3, MEF2A and NKX2-5. Such type of the provided differential DNA methylation biomarkers is successfully developed to subvert the traditional biomarkers using protein as major means, a newsituation is created for the prevention and treatment of the cardiac muscle damage, and a reference is provided for the development of other disease biomarkers. The DNA methylation biomarkers are capable of evaluating the damage level of the cardiac muscle affected by environmental factors, and evaluating and forecasting the cardiotoxicity of environmental chemistry, and are the biomarkers with the prospect.

The invention provides an inner tobacco lamina box body, an integral tobacco lamina box and a processing method of the integral tobacco lamina box and relates to the field of packaging boxes. The integral tobacco lamina box comprises an outer tobacco lamina box body and the inner tobacco lamina box body. The outer tobacco lamina box body comprises an outer box main body of a square structure, and a second opening is formed in one side of the outer box main body. The inner tobacco lamina box body is attached in the outer tobacco lamina box body. A first opening of the inner tobacco lamina box body is opposite to the second opening of the outer tobacco lamina box body. The inner tobacco lamina box body is arranged in the outer tobacco lamina box body in the attached mode, the first opening of the inner tobacco lamina box body is opposite to the second opening of the outer tobacco lamina box body, and the inner tobacco lamina box body and the outer tobacco lamina box body are matched to form the integral tobacco lamina box for containing tobacco laminas. Side plates of the inner tobacco lamina box body and the outer tobacco lamina box body are each internally of a paper honeycomb structure, a dual-layer surface paper combined technique is adopted, and suitable raw paper is adopted according to the reasonable design; and based on the advantages of good rigidity and stability of the honeycomb structures, the compressive strength is greatly improved, the production cost is reduced, the weight of the integral tobacco lamina box is reduced, and the supporting capacity is improved.

The invention discloses graphene concrete which comprises the following components in parts by weight: 350-400 parts of cement, 700-750 parts of fine aggregates, 1000-1150 parts of coarse aggregates and 200-220 parts of a graphene water dispersion, wherein the concentration of the graphene water dispersion is 0.55-0.65g / L; the graphene water dispersion is prepared from graphite sheets together with a surfactant by using a high shearing liquid phase peeling method. The graphene water dispersion in the graphene concrete disclosed by the invention is prepared from the surfactant by using the highshearing liquid phase peeling method, and the graphene concrete has the characteristics of being high in quality, high in yield and low in cost, and can be produced in a large scale in practical application. Due to the adoption of the high-quality defect-free graphene in the graphene concrete, the micro structure of a cement hydration product can be effectively regulated and controlled, and properties such as the strength, the permeation resistance and the durability of the concrete can be improved.

The invention discloses a cefalexin oil suspension. Every 100mL of the suspension contains the following raw and auxiliary materials: 2-30g of cefalexin, 0.9-1.0g of surfactant, 1.0-5.0g of colloid protective agent, 7.5-12.5g of suspending agent, 0-0.1% of antioxidant and the balance of oil phase. Under the condition of adopting specific auxiliary material varieties and proportions, the prepared suspension has the advantages of favorable physical stability, favorable needle penetrability and favorable redispersibility, and does not have the condition of quality reduction after being stored in a 4-60-DEG C environment for 3 months, which indicates stable quality.

The invention discloses a pipeline automation device for preparing biological products in a cell factory. The pipeline automation device comprises cell factories, a cell factory framework, a pump truck mechanism and a multi-axis robot, the cell factory framework is used for loading the multiple cell factories, the pump truck mechanism is arranged on one side of the multi-axis robot, the pump truck mechanism communicates with the cell factory framework through a liquid inlet main pipeline and a liquid outlet main pipeline, and the multi-axis robot is used for driving the cell factory framework to perform preparation action. Through the multi-axis robot and in combination with the cell factories, the operation mode of the biological products prepared by using the cell factories is upgraded from traditional overturning machinery to multi-axis robot operation, and the labor intensity is reduced by utilizing the advantages of high action consistency, good stability, high precision, high efficiency and the like of the multi-axis robot; and full-automatic management of the liquid inlet main pipeline and the liquid outlet main pipeline is achieved, the product quality is improved, the equipment investment is greatly reduced, many inconveniences such as mixed liquid neutralization and pipeline liquid storage are avoided, and the operation efficiency and the running efficiency are improved.

The invention relates to a method for preparing carbamate. The method for preparing the carbamate comprises the following processes of: dissolving carbonic ester, amine and acetate catalyst into a proper solvent so that the molar ratio of the carbonic diester to the amine is 2 to 20 times stoichiometric ratio and the molar ratio of the catalyst to the amine is 1:5-1:100; and then reacting for 0.5 to 16 hours at the temperature of between 30 and 160 DEG C, and performing separation and purification to obtain the required carbamate. The method has the main advantages that: the catalyst has stable chemical performance and low price; and the product separation and purification processes are simple.

Provided is a dentrifice composition that stably contains an ascorbic acid phosphate ester or a salt thereof and provides a good sensation of cleaning. A dentrifice composition characterized by containing (B) a calcium-carbonate abrasive and (C) at least one compound selected from among hydrogen carbonate, orthophosphate, and condensed phosphate in (A) a dentrifice composition containing an ascorbic acid phosphate ester or a salt thereof. This dentrifice composition is further characterized in that the quotient of the mass of component (C) and the mass of component (B) is between 0.020 and 1.0, inclusive.

The invention relates to a control power input isolation circuit for an electric automobile. The circuit includes an anti-reverse connection circuit; the input end of the anti-reverse connection circuit is connected to a control power VCC, the output end is connected to the input end of an overvoltage protection circuit, the output end of the overvoltage protection circuit is connected to the input end of a capacitance-resistance absorbing circuit, the output end of the capacitance-resistance absorbing circuit is connected to the input end of a common mode current filter circuit, the output end of the common mode current filter circuit is connected to the input end of a Y-type capacitor isolation and filter circuit, and the Y-type capacitor isolation and filter circuit adopts Y-type capacitors CY1 and CY2 and is connected to an automotive housing through the capacitors CY1 and CY2. According to the control power input isolation circuit, a rectifier diode D1 is arranged for reverse connection prevention, a voltage stabilization diode Z1 is arranged for voltage stabilization, the capacitance-resistance absorbing circuit is arranged for voltage filter, a common mode inductor L is arranged for current filter, the Y-type capacitors CY1 and CY2 are arranged for raising the potential, the power is isolated from the automotive housing, the insulation of the control power with the automotive housing is improved, the immunity of the control power is improved effectively, and the stability of system operation is guaranteed.

The invention relates to solid dispersions of poorly water soluble compounds, in particular Compound A as disclosed herein, formed by solvent co-precipitation or spray drying, resulting in improved bioavailability, safety and tolerability of said compounds.

The invention provides a plug-pull type top-end-driving electric sliding door mechanism and a driving method. A motor is started, the motor drives a belt to move, the belt is in engaged connection with a rotating gear through a guide wheel, the rotating gear at the bottom of a middle sliding block is driven to move, then the middle sliding block is driven to move, the middle sliding block drives aside sliding block to move, the middle sliding block is inserted into a bent upper guide rail through a guide block at the bottom, then the middle sliding block moves along a track of the upper guiderail, and then a vehicle door moves along the track of the upper guide rail to be opened; when the vehicle door is opened, the acting force of outward movement of a lower guide rail drives a swing arm outwards, so that the swing arm pulls the lower guide rail outwards; when the vehicle door is closed, a vehicle body mounting limiting block on the right side limits the right end of the lower guiderail; and by means of the structure of the upper guide rail and the lower guide rail, stability is good, noise is low, stability is good, the running track of the belt is corrected through the guidewheels at an alternating position, and double-composite movement of Y-direction movement and X-direction movement can be achieved.

The invention discloses a 3D printed wall and a splicing method thereof. The 3D printed wall comprises a first wall assembly and a second wall assembly which are made through the 3D printing technology and caulking plates made through the 3D printing technology. Sealing glue is smeared on the two sides of each caulking plate. The first wall assembly and the second wall assembly are connected to the two sides of each caulking plate through the sealing glue and spliced through the caulking plates to form splicing space. A reinforcement mesh is vertically placed in the splicing space. Concrete is poured in the first wall assembly, the second wall assembly and the splicing space to form the 3D printed wall. The splicing method of the 3D printed wall is simple.

Nickel-based catalysts comprising silicon modified nickel (nickel silicate) are provided, as are methods for using the catalysts to i) convert methane to CO and H2 (e.g. for use in synthetic chemical compound production); or to ii) convert methane to oxygenated hydrocarbons e.g. one or more of methanol, acetone, formaldehyde, and dimethyl ether. The catalysts are bifunctional and comprise both Ni metallic catalytic sites and acidic nickel-silicon catalytic sites, and the conversions are performed under moderate reaction conditions.

The invention discloses a hydroxyl acrylic acid dispersion and a synthetic method thereof, and belongs to the technical field of coatings. The hydroxyl acrylic acid dispersion comprises the followingcomponents in parts by weight: 7-25 parts of air drying type resin, 1-6 parts of an acrylic carboxyl monomer, 6-12 parts of an acrylic hydroxyl monomer, 50-70 parts of other acrylic monomers, 1-10.5 parts of an initiator, 1-3 parts of a solvent, 3-6 parts of a neutralizing agent, 1-3 parts of a drier, and 100-200 parts of deionized water. The invention also disclosed the synthetic method of the above hydroxyl acrylic acid dispersion. The hydroxyl acrylic acid dispersion disclosed by the invention has a content of the solvent of 0.5-1%, and the content is far lower than that of a similar hydroxyl acrylic acid dispersion; and the synthetic method disclosed by the invention is simple and easy to operate, and can obtain the hydroxyl acrylic acid dispersion with a low content of solvent.

The invention provides a peanut-shape structure-based refractive index sensor of a Mach-Zehnder interferometer. The peanut-shape structure-based refractive index sensor of the Mach-Zehnder interferometer is characterized by consisting of an incidence optical fiber (1), a first peanut-shape structure (2), a connection optical fiber (3), a second peanut-shape structure (4) and an emergent optical fiber (5), wherein two ends of the first peanut-shape structure (2) are respectively connected with the incidence optical fiber (1) and the connection optical fiber (3); two ends of the second peanut-shape structure (4) are respectively connected with the connection optical fiber (3) and the emergent optical fiber (5); the two peanut-shape structures (2) and (4) are connected through a section of the connection optical fiber (3); and the two peanut-shape structures (2) and (4) and the connection optical fiber (3) form a full-optical fiber Mach-Zehnder interferometer. The peanut-shape structure-based refractive index sensor of the Mach-Zehnder interferometer is high in sensitivity, simple to manufacture, low in cost and tiny in structure, and can be applied to various practical projects.