47results about How to "Reduced aperture" patented technology

The invention provides a metal organic framework material used for absorbing and separating CO2 and a preparation method thereof. The metal organic framework material is a rigid metal carboxyl compound cluster-like structure which is formed by transition metal ions and multidentate organic ligands through covalent bonds and intermolecular forces. An amine polymer is modified on the metal organic framework material; and the metal organic framework material used for absorbing and separating the CO2 has a specific surface area of 1,000 to 1,200 m<2>/g, and a pore volume of 0.4 to 0.6 cm<3>/g. The preparation method comprises the following steps of: respectively dissolving the nitrate, the chloride or the carbonate of copper or zinc and 1,3,5-trimesic acid together in a stoichiometric ratio in water or an organic solvent; mixing uniformly and sufficiently to react to obtain a BTC bridged complex crystal; and applying a product obtained by reacting an obtained BTC bridged complex crystal with the solution of polyethyleneimine to the metal organic framework material used for absorbing and separating the CO2. The material can realize selective absorption of a gas under a low pressure.

The invention discloses novel liquid polycarbosilane which is low in viscosity and high in storage stability and is crosslinkable, a preparation method of novel liquid polycarbosilane, and an application of novel liquid polycarbosilane. Polycarbosilane is prepared by adopting chloromethyl alkoxy silane or mixtures of chloromethyl alkoxy silane as raw materials by virtue of Grignard coupling reaction and reduction reaction, and the structure of polycarbosilane is shown in a formula (I) in the specification. The structure simultaneously contains Si-H bonds and unsaturated bonds such as C=C bonds, can be subjected to self-crosslinking and curing under a certain condition, has relatively high ceramic yield, and can be used as a silicon carbide precursor of a polymer precursor impregnation pyrolysis (PIP) process. Polycarbosilane disclosed by the invention is adjustable in structural composition, good in storage stability, low in viscosity and relatively low in boiling point, and has the utilization potentiality of being used as a silicon carbide ceramic precursor for chemical vapor deposition/chemical vapor infiltration (CVD/CVI). In addition, polycarbosilane can also be used for replacing commonly-used divinyl benzene to serve as a crosslinking agent of solid-state polycarbosilane (PCS).

A static, double-edge-triggered flip-flop has an upper data path and a lower data path connected between a data input node and an output terminal. The upper path includes a switch connected to a first data loop, and the lower path includes a switch connected to a second data loop. The first and second data loops share a forward path having a data-inverting circuit. In addition, each loop has a feedback path which contains only one element in the form of a switch. However, no data-inverting circuit is included in either of the feedback paths. Advantageously, all the elements of the flip-flop may be constructed using MOSFET transistors implemented according to any one of a variety of semiconductor technologies. In more than one particularly advantageous embodiments, the flip-flop is constructed using a total of twelve transistors. Through this simplified two-loop design, operational efficiency is improved, low metastability is achieved and costs of manufacture are lowered, all while maintaining low power requirements.

The invention discloses a method for preparing a hydrocracking catalyst. The method comprises the following steps of carrying out hydrothermal treatment on alumina dry gel powder, uniformly mixing the treated alumina dry gel powder and at least one acidic cracking material powder, dipping the mixture into a hydrogenation active ingredient-containing metal salt solution, carrying out filtration, drying and crushing, adding a peptizing agent or a binder into the crushed product, and carrying out molding, drying and calcination to obtain the hydrocracking catalyst. The hydrocracking catalyst has high hydrogenation active ingredient content, a large pore volume, a large aperture size and a large specific surface area, and is suitable for hydrocracking of a heavy vacuum distillate having a higher boiling point.

An antenna element including a base plate, a first ground clustered pillar projecting from the base plate, a second ground clustered pillar projecting from the base plate and spaced apart from a first side of the first ground clustered pillar, a first ground member projecting from the base plate between the first ground clustered pillar and the second ground clustered pillar, wherein a distal end of the first ground member is configured to capacitively couple to the second ground clustered pillar, and a first signal member projecting from the base plate between the first ground clustered pillar and the first ground member, wherein the first signal member is electrically insulated from the base plate, the first ground clustered pillar, and the first ground member, and a distal end of the first signal member is configured to capacitively couple to the first ground clustered pillar.

The invention discloses a hydrocracking catalyst and a preparation method thereof. The preparation method comprises the following steps: 1, dipping aluminum hydroxide xerogel powder used in a carrier in a solution containing a hydrogenation metal component; 2, drying the powder; and 3, fully rolling, molding and roasting the powder together with molecular sieve under the action of a peptizer or a binder to obtain the catalyst. The catalyst of the invention is obtained only through one-time high temperature roasting, so the preparation method is simple, and the preparation cost is obviously reduced. In addition, the hydrogenation center and the cracking center of the catalyst of the invention coordinate and cooperate with each other, so the catalyst has a high catalytic activity, and the catalyst which simultaneously has a large specific surface area and a large pore volume is suitable for processing catalytic process for the high productivity of naphtha by hydrocracking high-dry-point low-quality reduced pressure distillate oil.

A phased array antenna including a base plate and a board projecting from the base plate. The board including a dielectric layer and a conductive layer. The conductive layer includes first and second spaced apart radiating elements and a pillar disposed between the first and second spaced apart radiating elements. The pillar is electrically connected to the base plate, and the first and second spaced apart radiating elements are configured to capacitively couple to the pillar.

A stereoscopic imaging apparatus comprising a single photographic optical system; an image sensor, on which subject images that have passed through different first and second areas in a predetermined direction, respectively, are formed after being pupil-split, photoelectrically converting the subject images that have passed through the first and second areas, respectively, to output a first image and a second image; a diaphragm restricting a light flux incident on the image sensor; a subject information acquiring device acquiring distance information of a subject within a photographic angle of view or a device acquiring an amount of parallax of the subject; and a diaphragm control device controlling an F-number of the diaphragm so that a parallax between the first image and the second image is in a predetermined range based on the acquired distance information of the subject or the acquired amount of parallax of the subject.

The invention discloses a preparation method of a hydrocracking catalyst. The preparation method comprises the following steps of carrying out low-temperature hydro-thermal treatment on alumina dry gel powder in the ammonia-containing water vapor atmosphere, dipping the alumina dry gel powder subjected to hydro-thermal treatment into a solution containing a hydrogenation active metal ingredient, carrying out drying, and carrying out full grinding, molding, drying and calcination of the alumina dry gel powder with the hydrogenation active metal ingredient, and a molecular sieve in the presence of a peptizer or a binder to obtain the hydrocracking catalyst. The preparation method improves a catalyst pore structure. The hydrocracking catalyst obtained by the preparation method has a large specific surface area and a large pore volume, is conducive to optimized cooperation of a hydrogenation ingredient and a cracking ingredient, has high catalytic activity, and is suitable for hydrocracking yield-increasing of high-quality heavy naphtha from vacuum distillate having a high dry point and poor quality and for a catalytic process for improvement of tail oil product quality.

A number of improved structures and methods to a condenser microphone device are provided so that the condenser microphone device can be used in a skin-contact manner satisfactorily. According to the proposed methods, the sensitivity of the condenser microphone device is lowered appropriately by reducing the aperture of the through hole on the enclosure of the condenser microphone device's sensing member, or by reducing the amount of electrical charge carried by the thin film inside the sensing member. According to the proposed structures, the sensing member is wrapped inside a plastic jacket or film, covering up the through hole on the sensing member's enclosure, or providing another through hole of very small aperture. The plastic jacket could also form a buffer space between the jacket and the sensing member.

The invention discloses a preparation method of a hydrocracking catalyst. The preparation method comprises carrying out low-temperature hydro-thermal treatment on alumina dry gel powder, dipping the alumina dry gel powder into a hydrogenation active metal-containing solution, carrying out drying, and carrying out full grinding, molding, drying and calcination of the dipped material with a molecular sieve in the presence of a peptizing agent or a binder. The preparation method improves a catalyst pore structure. The hydrocracking catalyst has a large specific surface area and a large pore volume, is conducive to optimization cooperation of a hydrogenation ingredient and a cracking ingredient, has high catalytic activity, and is suitable for hydrocracking yield-increasing of high-quality heavy naphtha from vacuum distillate having a high dry point and poor quality and for improvement of tail oil product quality.

The embodiment of the invention provides a lens and terminal equipment, and relates to the technical field of lens. The lens comprises a lens group, the lens group comprises a first lens, a second lens, a third lens and a fourth lens, wherein the first lens, the second lens, the third lens and the fourth lens are arranged from the object side to the image side in sequence. The object side surfaceof the first lens is convex, the relative illuminance RI of the lens group and the quartic cos<4> (HFOV) of a cosine value of a half angle of view of the lens group meet the condition that RI/cos<4> (HFOV) is greater than or equal to 1, and the effective focal length f of the lens group and the entrance pupil diameter EPD of the lens group meets the condition that f/EPD is less than or equal to 1.3.

The invention relates to preparing of gelatin affinity chromatography media and a method for separation and purification of fibronectin using the gelatin affinity chromatography media. Activation liquid is used for ligand washing activation of CNBr-agarose affinity chromatography media, and then combination liquid is used for washing. A gelatin solution is prepared, the CNBr-agarose affinity chromatography media washed by the combination liquid are added, and temperature control stirring coupling is carried out. Gelatin coupling concentration is detected, combination liquid washing is carried out, and sealing liquid temperature control stirring sealing is carried out. Acid washing liquid and base washing liquid alternating washing is carried out, water washing is then carried out, and the gelatin affinity chromatography media are obtained. The gelatin affinity chromatography media are placed in a chromatographic column. Equilibrium liquid is used for balancing the chromatographic column. Samples flow through the gelatin affinity chromatography media. The preparing method of the gelatin affinity chromatography media has the advantages that purifying efficiency is high, the production cycle is short, and the technology is simple.

The present invention is directed to a lens diaphragm device that can avoid a degradation of an image due to both diffraction of a light beam and flares. The diaphragm device includes two diaphragm vanes (2 and 4) that respectively have notches (28 and 36) opposed to each other in a single plane perpendicular to an optical axis (O), and two of the vanes are moved close to and apart from each other in the single plane so as to vary an aperture of the lens diaphragm. The lens diaphragm device also includes two optical filters (6 and 8) used to reduce a quantity of a beam of light passing through the diaphragm, and an aperture of the diaphragm defined by edges of the optical filters and the notches of the vanes is shaped to be asymmetrical about straight line which crosses the optical axis and is perpendicular to directions of the motion of the vanes.

The invention discloses bone regeneration guiding collagen membrane for dental use and a preparation method thereof, and belongs to the technical field of regenerative medical materials. The preparation method of the bone regeneration guiding collagen membrane for dental use comprises the following steps: S1, preparing a raw material and carrying out pretreatment, including: S1-1, dissolving type-I collagen in an acidic solvent and carrying out homogenization so as to obtain collagen slurry, S1-2, filtering the collagen slurry, and S1-3, performing negative-pressure pumping on the collagen slurry filtered in S1-2 until no obvious bubbles exist; S2, carrying out freeze-drying, namely freeze-drying the collagen slurry prepared in S1 so as to obtain collagen sponge; S3, pressing the collagensponge into a thin piece, namely pressing the collagen sponge into a thin piece under a pressure of 1-5 MPa; and S4, performing severe dehydration and cross-linking on the thin piece in vacuum so as to obtain the bone regeneration guiding collagen membrane for dental use, and carrying out sterilizing and storing. The bone regeneration guiding collagen membrane for dental use disclosed by the invention can be used to stop bleeding and guide bone regeneration after dental implantation, and has the advantages of being low in immunogenicity, excellent in biocompatibility and capable of effectivelypromoting bone regeneration. Moreover, the preparation method of the bone regeneration guiding collagen membrane for dental use has the advantages of being efficient and easy in operation, non-toxicand harmless.

A method of managing traffic flow. The method includes receiving, at a camera, an image containing vehicle traffic flow. The method also includes processing, using a processor, the image to mask areas in the image that exceed a predetermined number of candelas. The method also includes thereafter analyzing, using the processor, the image to determine a parameter related to the vehicles, whereby an analysis is performed. The method also includes managing the traffic flow based on the analysis.

Apparatus for plasma processing of a continuous fiber, comprising a first and a second plasma torch. Each plasma torch comprises oppositely arranged electrodes to define a plasma discharge chamber between the electrodes. The plasma discharge chamber comprises an inlet and an outlet for passing a plasma forming gas between the electrodes. The apparatus further comprises an afterglow chamber in fluid communication with the outlets of the plasma discharge chambers, which comprises a substrate inlet and a substrate outlet arranged at opposite sides of the outlets of the plasma discharge chambers. A transport system is configured to continuously transport the fiber from the substrate inlet to the substrate outlet through the afterglow chamber. The substrate inlet comprises an aperture having a cross-sectional size substantially smaller than a cross-sectional size of the afterglow chamber. The outlets of the plasma torches face each other and exhaust plasma activated species into the afterglow chamber.

A recording apparatus that uses photocurable ink includes an ink discharge section that discharges photocurable ink onto a printing medium, a light irradiation section that irradiates curing light onto the photocurable ink that has been discharged onto the printing medium, a tension application mechanism that applies tension to the printing medium and a control section. The control section discharges photocurable ink onto the printing medium by controlling the ink discharge section, and subsequently applies a tension, which is greater than that at the time of ink discharge, to the printing medium by controlling the tension application mechanism, and irradiates curing light onto the photocurable ink that has been discharged onto the printing medium by controlling the light irradiation section in a state in which the tension is being applied to the printing medium.

The invention provides an optical lens comprising a front lens set, a diaphragm and a rear lens set arranged in sequence from an object side to an image side, wherein the front lens set comprises a first negative meniscus lens, a second negative meniscus lens, a first biconcave lens and a first biconvex lens arranged in sequence from the object side to the image side; the rear lens set comprises athird negative meniscus lens, a second biconvex lens, a second biconcave lens, a third biconvex lens, a fourth biconvex lens and a fourth negative meniscus lens arranged in sequence from the object side to the image side; the third negative meniscus lens and the second biconvex lens are hermetically connected and bound to form a first bound lens set; the second biconcave lens and the third biconvex lens are hermetically connected and bound to form a second bound lens set; and the fourth biconvex lens and the fourth negative meniscus lens are hermetically connected and bound to form a third bound lens set. The optical lens provided by the invention has the excellent performance of large relative aperture, large visual field, high resolution ratio and low distortion.

The invention discloses a coal underground gasification system capable of realizing parallel transportation of multiple medium. The coal underground gasification system comprises a composite materialcontinuous pipe without disconnection, the front end of the composite material continuous pipe is connected with a gas-water mixing combustor, and the rear end of the composite material continuous pipe is connected with a well to-be-transported medium interface; the composite material continuous pipe comprises an outer pipe, wherein at least three inner pipes are distributed in a pipe cavity of the outer pipe; a filling body is arranged between each inner pipe and the corresponding outer pipe; the first inner pipe is a metal pipe, and a heat insulation layer is arranged on the outer wall of the first inner pipe; a pipe cavity of the first inner pipe is used as a liquid oxygen filling channel; the second inner pipe is a non-metal pipe; a pipe cavity of the second inner pipe serves as a water conveying channel; and the filling bodies are made of a thermal insulation material. The coal underground gasification system utilizes the porous composite material continuous pipe, multiple mediumsuch as liquid oxygen, water and gas can be transported in a parallel mode, and it is guaranteed that enough flows of combustion-supporting gas and water vapor participate in underground coal gasification. The invention further discloses a coal underground gasification method method for parallel transportation of the multiple medium.