53results about How to "Elongated length" patented technology

Absorbable stents and absorbable stent coatings have been developed with improved properties. These devices preferably comprise biocompatible copolymers or homopolymers of 4-hydroxybutyrate, and optionally poly-L-lactic acid and other absorbable polymers and additives. Compositions of these materials can be used to make absorbable stents that provide advantageous radial strengths, resistance to recoil and creep, can be plastically expanded on a balloon catheter, and can be deployed rapidly in vivo. Stent coatings derived from these materials provide biocompatible, uniform coatings that are ductile, and can be expanded without the coating cracking and / or delaminating and can be used as a coating matrix for drug incorporation.

Implants and associated delivery systems for promoting angiogenesis in ischemic tissue are provided. The implants may be delivered percutaneously, thoracically or surgically and are particularly well suited for implantation into the myocardium of the heart. The implants are configured to have a first configuration having a low profile and an expanded, second configuration having a large profile. The implants are delivered to the ischemic tissue location in the first configuration, implanted then expanded to the second configuration. The expanded implants maintain a stress on the surrounding tissue, irritating and slightly injuring the tissue to provoke an injury response that results in angiogenesis. The flow of blood from the surrounding tissue into the implant and pooling of the blood in and around the implant leads to thrombosis and fibrin growth. This healing process leads to angiogenesis in the tissue surrounding the implant. Additionally, the implants may contain an angiogenic substance or a thrombus of blood, preloaded or injected after implantation to aid in initiating angiogenesis.

Implants and associated delivery systems for promoting angiogenesis in ischemic tissue are provided. The implants may be delivered percutaneously, thoracically or surgically and are particularly well suited for implantation into the myocardium of the heart. The implants are configured to have a first configuration having a low profile and an expanded, second configuration having a large profile. The implants are delivered to the ischemic tissue location in the first configuration, implanted then expanded to the second configuration. The expanded implants maintain a stress on the surrounding tissue, irritating and slightly injuring the tissue to provoke an injury response that results in angiogenesis. The flow of blood from the surrounding tissue into the implant and pooling of the blood in and around the implant leads to thrombosis and fibrin growth. This healing process leads to angiogenesis in the tissue surrounding the implant. Additionally, the implants may contain an angiogenic substance or a thrombus of blood, preloaded or injected after implantation to aid in initiating angiogenesis.

Absorbable stents and absorbable stent coatings have been developed with improved properties. These devices preferably comprise biocompatible copolymers or homopolymers of 4-hydroxybutyrate, and optionally poly-L-lactic acid and other absorbable polymers and additives. Compositions of these materials can be used to make absorbable stents that provide advantageous radial strengths, resistance to recoil and creep, can be plastically expanded on a balloon catheter, and can be deployed rapidly in vivo. Stent coatings derived from these materials provide biocompatible, uniform coatings that are ductile, and can be expanded without the coating cracking and / or delaminating and can be used as a coating matrix for drug incorporation.

A basic ion optical system having a guaranteed capability for the temporal focusing of ions, including sector-shaped electrodes, an injection slit and an ejection slit, is arranged on the same plane. Four or more sets of the basic ion optical systems are arrayed at predetermined intervals in a direction substantially orthogonal to the aforementioned plane. The injection slit on a topmost basic ion optical system plane and the ejection slit on a basic ion optical system plane located immediate below, as well as the injection slit on a bottommost basic ion optical system plane and the ejection slit on a basic ion optical system plane located immediate above, are respectively connected by another type of basic ion optical system having a guaranteed capability for the temporal focusing of ions. The other injection slits and ejection slits are respectively connected by another type of basic ion optical system having a guaranteed capability for the temporal focusing of ions. Thus, a loop orbit having a three-dimensionally deformed figure “8”-shape is formed, whereby the flight distance is elongated while ensuring the temporal focusing of the ions for the entire system, simultaneously with utilizing the three-dimensional space to compactify the ion optical system.

The invention discloses an optical imaging camera which comprises multiple lenses in sequence along an optical axis between an object side and an image side, wherein each lens has an object-side surface and an image-side surface. The lenses are provided with at least one variable gap, and the lens closest to the object side has positive refractive rate. The optical imaging camera satisfies Delta G / Gv<=0.1, wherein Delta G is the absolute value of the difference between a first value and a second value of the length of the variable gap on the optical axis when the camera is focused to objects which are infinitely far and 500mm far respectively, and Gv is the second value. The optical imaging camera of the invention is used for optical photography imaging. The lens length of the optical imaging camera is shortened effectively, the imaging quality is ensured, and the imaging resolution of distant or close photographing is strengthened. In addition, the design and processing difficulty of the optical imaging camera is low.

Absorbable stents and absorbable stent coatings have been developed with improved properties. These devices preferably comprise biocompatible copolymers or homopolymers of 4-hydroxybutyrate, and optionally polylactic acid and other absorbable polymers and additives. Compositions of these materials can be used to make absorbable stents that provide advantageous radial strengths, resistance to recoil and creep, can be plastically expanded on a balloon catheter, and can be deployed rapidly in vivo. Stent coatings derived from these materials provide biocompatible, uniform coatings that are ductile, and can be expanded without the coating cracking and / or delaminating and can be used as a coating matrix for drug incorporation.

The invention provides a multi-stream, high-temperature and low-oxygen and low NOx horizontally combined type single heat storage burner and belongs to the technical field of single heat storage combustion devices on heating furnaces and heat treatment furnaces. The burner comprises a porous burner block, an air heat storage box, a heat storage body and a coal gas spray pipe; the porous burner block and a furnace wall are formed by pouring the same refractory castable integrally; the porous burner block is mounted at the front end of the air heat storage box; the heat storage body is mounted in the air heat storage box; the coal gas spray pipe is mounted in the air heat storage box; the front end of the air heat storage box extends into the furnace wall for 150 mm and is welded to a furnace wall steel plate. The burner has the advantages as follows: combustion air can be preheated to 1000 DEG C or above, preheating efficient recycling is realized and fuel consumption is reduced. Meanwhile, a lean oxygen combustion mechanism is adopted, so that lean oxygen combustion of fuel in the furnace is realized, generation of NOx is effectively restrained in the combustion process and pollutant discharge is reduced greatly.

The invention relates to a direct current quick breaker, in particular to a direct current quick breaker with high requirement for short circuit breaking current. The breaker comprises a breaker body and an arc extinguish chamber, wherein the arc extinguish chamber comprises a pair of insulated shells and an arcing ring; the cavity of the arc extinguish chamber comprises a metal grid, an insulated grid and a transverse clapboard; the metal grid and the insulated grid are positioned in the middle of the arc extinguish chamber; the transverse clapboard is positioned on the upper part of the arc extinguish chamber; one side, which faces the bottom of the arc extinguish chamber, of the metal grid is a lower side provided with a notch having a downward opening; and two types of metal grids, namely a straight-panel metal grid and a U-shaped metal grid are provided. The breaker has the advantages of quickly establishing arc voltage, reducing the resistance of electric arc entering the arc extinguish chamber, lengthening electric arc, shortening arcing time, enhancing arc extinguishing capability of the arc extinguish chamber, along with simple structure, small overall dimension, convenient assembly and maintenance and the like.

The invention discloses a tabletting method of a plum blossom shoot tip chromosome. The method comprises the following steps: successively carrying out a Kano stationary liquid fixation, front low permeability treatment, cellulase and pectinase enzymolysis and back low permeability treatment on a part of 0.5-1.0cm at the innermost side of a top growth point of an annual branch of plum blossom or the top growth point germinated newly after pruning; and carrying out flame dry-method tabletting on the treated top growth point. According to the invention, tabletting is carried by adopting a flame method, and pretreatment, dissociation and staining and tabletting processes are omitted to directly carry out fixation, thereby improving tabletting efficiency and elongating the length of the chromosome. In addition, more importantly, the obtained tablet can be used for a fluorescence in-situ hybridization experiment, and simultaneously, the problem that sampling is limited by early spring is solved.

A method for manufacturing large diameter tapered roller bearing cages (10B). A straight metal strip, coil or plate of cage blank material (10), precisely dimensioned in width, length and thickness, with or without windows or pockets pre-cut, is fed into a rolling mill (100). The rolling mill incorporates a pair of unparallel forming rolls (102A, 102B) disposed such that the gap (G) there between forms a wedge shape. As the cage blank material (10) is fed through the wedge-shaped forming roll gap (G), one lateral side of the cage blank material is plastically deformed to reduce its thickness (T) and to elongate its length, while no deformation or only a very slight deformation is introduced to the other lateral side of the cage blank, thus forming the cage blank into an arc shape. A third roll (104) disposed in exit side of the forming rolls (102), in a pre-calculated position, bends the rolled cage blank into a circular conical ring (10A). After the entire cage blank is rolled into the conical ring configuration, the conical ring may pass through the rolling mill (100) again for a final resizing. Adjacent butt ends (12A, 12B) of the formed conical ring cage blank (10A) are aligned and joined together during the assembly process to form the large diameter tapered roller bearing cage (10B).

An electric discharge machining apparatus includes a guide electrode that is tubular and receives a small-diameter wire electrode for electric discharge machining. The small-diameter wire electrode can freely slide within the guide electrode. A guide electrode holder holds the guide electrode at a specified position. Pressurized fluid is supplied into the guide electrode to feed the small-diameter wire electrode from the guide electrode. A small-diameter wire electrode holder automatically releases and grasps the small-diameter wire electrode in response to starting and stopping of the pressurized fluid supply, respectively.

The invention relates to the field of lamps and discloses a heat-dissipation type LED (Light Emitting Diode) lamp. The heat-dissipation type LED lamp comprises a lamp body, a lamp cap, a lamp holder and a lamp shade, wherein the lamp body is connected to the lamp cap; the lamp cap is in threaded connection with the lamp holder; the lamp shade covers the lamp body; foldable memory metal is connected between the lamp holder and the lamp shade; a plurality of holes are formed in the foldable memory metal; a first elastic sleeve is connected onto the lamp holder in a sliding manner; a second elastic sleeve sleeves the first elastic sleeve in the sliding manner; the second elastic sleeve is connected to the lamp shade; an expansion block is arranged between the second elastic sleeve and the lamp shade; a spring is connected between the first elastic sleeve and the memory metal; a first through hole is formed in the first elastic sleeve; a second through hole is formed in the second elastic sleeve; the first through hole and the second through hole are formed in a staggered manner; the first elastic sleeve is positioned on the outer side of the memory metal; the lamp shade is a transparent heating expansion body. Compared with the prior art, the heat-dissipation type LED lamp has the advantages of better heat dissipation effect, better illumination brightness, low production cost and long service life; the heat-dissipation type LED lamp can be popularized and used.

A zoom lens system includes, in order from an object side to an image side, a first positive lens group (G1), a second negative lens group (G2), a third positive lens group (G3), and a fourth positive lens group (G4). The second and third lens groups are movable for varying the focal length. The zoom lens system offers a four-times zoom ratio, and employs two plastic aspheric lenses (L3, L9) and a resin hybrid lens (L6). The first lens group consists of two lenses (L1, L2) arranged in an abutting relationship. The second and third lens groups each includes a pair of cemented lenses (L4, L5; L7, L8).

The invention relates to the technical field of leveling of metal strips, in particular to a leveling device. The leveling device comprises a base plate, a leveling wheel, a guide plate and a tensioning wheel, wherein the base plate is horizontally arranged, the leveling wheel is installed at the first end of the base plate, the guide plate is perpendicularly installed in the middle of the base plate, the position of the guide plate can be changed, the tensioning wheel is installed on the bottom of the guide plate, the guide plate is perpendicular to the base plate, and the included angle between the line connecting the tensioning wheel with the leveling wheel and the line connecting the first end with the second end of the base plate changes along with the change of the installation position of the guide plate. By the adoption of the structure, when the leveling effect needs to be adjusted, a user just needs to change the installation position of the guide plate on the base plate. Meanwhile, the leveling device is simple in structure and convenient to manufacture and assemble. In the prior art, a leveling mechanism is complicated in structure, and a leveling device needs to be adjusted complicatedly. In this way, compared with the prior art, the leveling device has the advantages that adjustment convenience is greatly improved, and cost is reduced.

The invention provides a device for increasing switching arc voltage and a control method thereof. The device comprises a vacuum arc-extinguishing chamber, permanent magnets, arc-blowing coils and anarc-blowing loop, a switch fracture is arranged in the vacuum arc-extinguishing chamber, the switch fracture comprises a moving contact and a static contact, and an arc voltage is generated when the moving contact and the static contact are separated; the permanent magnets are symmetrically arranged on two sides of the vacuum arc-extinguishing chamber; the arc blowing coils are symmetrically arranged on the two sides of the vacuum arc-extinguishing chamber, are arranged on the outer sides of the permanent magnets and are connected in series; and the arc blowing loop is connected with the arc blowing coils in parallel, and provides currents for the arc blowing coils during working so as to improve the arc voltage.

The invention discloses a multi-stage combustion energy-saving environment-friendly burner, and belongs to the technical field of energy conservation and environmental protection. The burner comprises a burner overhaul cover plate, a combustion air inlet, a heat accumulator, a heat insulation material, a fire-resistant pouring material, a large-hole baffle brick, a high-temperature gas distribution chamber, a natural gas sprayer, a primary air spinning disk, an anchoring nail, a primary air inlet, a first connecting flange, a natural gas inlet, a grille plate, a second connecting flange, a bolt connector and a burner installation positioning plate, the burner overhaul cover plate is fixed on a low-temperature gas distribution chamber through the second connecting flange and the bolt connector, a steel pipe of the combustion air inlet is welded on the low-temperature gas distribution chamber, and the heat accumulator is mounted in a heat accumulation burner box. According to the burner, the advantages of air classifying combustion technique are sufficiently played, NOx generation is effectively restrained by the aid of oxygen-deficient combustion mechanism, and the discharge amount of pollutants such as nitrogen oxide is greatly reduced.

The invention relates to a direct current quick breaker, in particular to a direct current quick breaker with high requirement for short circuit breaking current. The breaker comprises a breaker body and an arc extinguish chamber, wherein the arc extinguish chamber comprises a pair of insulated shells and an arcing ring; the cavity of the arc extinguish chamber comprises a metal grid, an insulated grid and a transverse clapboard; the metal grid and the insulated grid are positioned in the middle of the arc extinguish chamber; the transverse clapboard is positioned on the upper part of the arcextinguish chamber; one side, which faces the bottom of the arc extinguish chamber, of the metal grid is a lower side provided with a notch having a downward opening; and two types of metal grids, namely a straight-panel metal grid and a U-shaped metal grid are provided. The breaker has the advantages of quickly establishing arc voltage, reducing the resistance of electric arc entering the arc extinguish chamber, lengthening electric arc, shortening arcing time, enhancing arc extinguishing capability of the arc extinguish chamber, along with simple structure, small overall dimension, convenient assembly and maintenance and the like.

Absorbable stents and absorbable stent coatings have been developed with improved properties. These devices preferably comprise biocompatible copolymers or homopolymers of 4-hydroxybutyrate, and optionally poly-L-lactic acid and other absorbable polymers and additives. Compositions of these materials can be used to make absorbable stents that provide advantageous radial strengths, resistance to recoil and creep, can be plastically expanded on a balloon catheter, and can be deployed rapidly in vivo. Stent coatings derived from these materials provide biocompatible, uniform coatings that are ductile, and can be expanded without the coating cracking and / or delarmnating and can be used as a coating matrix for drug incorporation.

A basic ion optical system having a guaranteed capability for the temporal focusing of ions, including sector-shaped electrodes, an injection slit and an ejection slit, is arranged on the same plane. Four or more sets of the basic ion optical systems are arrayed at predetermined intervals in a direction substantially orthogonal to the aforementioned plane. The injection slit on a topmost basic ion optical system plane and the ejection slit on a basic ion optical system plane located immediate below, as well as the injection slit on a bottommost basic ion optical system plane and the ejection slit on a basic ion optical system plane located immediate above, are respectively connected by another type of basic ion optical system having a guaranteed capability for the temporal focusing of ions. The other injection slits and ejection slits are respectively connected by another type of basic ion optical system having a guaranteed capability for the temporal focusing of ions. Thus, a loop orbit having a three-dimensionally deformed figure “8”-shape is formed, whereby the flight distance is elongated while ensuring the temporal focusing of the ions for the entire system, simultaneously with utilizing the three-dimensional space to compactify the ion optical system.

The invention belongs to the technical field of oil throwing rings, in particular to an oil throwing ring for warp knitting machine lubrication, including a ring body, the ring body includes a first half ring body and a second half ring body engaged with each other, and the ring body is at least Composed of a first arc plate and a second arc plate, a hook is fixed at the end of the first arc plate far away from the second arc plate, and a hook is fixed at the end of the second arc plate far away from the first arc plate There is a hook seat; by setting two half-arc half-rings, the first arc plate and the second arc plate are elastically connected by a stretching shaft and a spring, and within the length of the stretching shaft, a relatively large diameter There is a diffusion plate on the shaft and the oil slinger outside the ring body. When the oil slinger extends below the oil liquid, more lubricating oil can be scooped out, so that when the oil slinger rotates, the More lubricating oil is brought out and splashed on the gears. The oil throwing plate can be inclined to both sides, so the splashing range is larger and the oil throwing efficiency is high.

The invention relates to a dormitory lamp turnoff rod. The dormitory lamp turnoff rod comprises an outer short rod and a connecting structure; soft cushion layers are distributed around the outer wall of the outer short rod; a back cover is arranged at the back end of the outer short rod; the connecting structure is arranged on the back surface of the back cover; the front end of the back cover is connected with a rotating shaft; a limiting disc is arranged at the front end of the rotating shaft; a fixed shaft is placed at the front end of the limiting disc; embedment columns are distributed at the front end of the fixed shaft; inner short rods are connected to the front ends of the embedment columns; an outer long rod is connected to the inner wall of the tail end of the outer short rod; and inner long rods are distributed on the inner wall of the outer long rod. As the outer short rod and the soft cushion layers are provided and bonded with each other, and the length design of the whole outer short rod meets a certain ergonomics, the use habits of users can be effectively met; and meanwhile, the soft cushion layers are manufactured by adopting rubber materials, and can be effectively bonded with hands of the users, so that the friction coefficients with the hands are improved to prevent falling.

The invention provides an anti-bubble axe-like head and a scientific research ship. The axe-like head is positioned at the bottom of a bow; a junction between the axe-like head and the bow is a concave part; a water line is intersected with the axe-like head due to the position of the axe-like head on the ship; the length of the axe-like head is not more than 8% of the length between perpendiculars of the ship; in side view, the axe-like head is a sheet body, the upper contour and the lower contour of the axe-like head are rounded, and the thickness of the axe-like head is gradually increased from the bow to the rear part of the ship; in the view of transverse section, a raised part of the axe-like head is slowly transitional from top to bottom, the largest width of the transverse section of the axe-like head does not exceed 20% of the maximum water line width, and the half entrance angle of the water line part is not more than 20 DEG. According to the invention, on the one hand, bubbles are furthest reduced and the flowing tendency of the bubbles along a ship body is improved so that influences of the bubbles on acoustic equipment embedded in the bottom of the ship are avoided; and on the other hand, the running resistance of the ship is reduced, the economic efficiency of the ship is enhanced, and both working performances of the acoustic equipment at the bottom of the ship and the resistance performance of the ship are preferably taken into consideration.

A multifunctional drawing table for industrial design comprises a first base and a second base, universal wheels are installed under the first base and under the second base, an electric lifting column is vertically installed on the first base, a first U-shaped supporting piece is installed at the telescopic end of the electric lifting column, a first sleeve, a second sleeve and a third sleeve arefixed to the upper end of the first U-shaped supporting piece, a hollow table leg is vertically fixed to the second base, an adjusting table leg is inserted into the hollow table leg, a second U-shaped supporting piece is fixed to the upper end of the adjusting table leg, and a first transverse rod, a second transverse rod and a third transverse rod are fixed to the upper end of the second U-shaped supporting piece; the other end of the first transverse rod is inserted into the first sleeve, the second sleeve and the third sleeve respectively, a transverse movement adjusting mechanism is arranged on the first sleeve, the second sleeve and the third sleeve, an angle adjusting mechanism is arranged on the transverse movement adjusting mechanism, a drawing board is arranged on the angle adjusting mechanism, and a controller is arranged on the drawing board. The multifunctional drawing table has the beneficial effects of being simple in structure and high in practicability.

The invention relates to an upper and lower combined low-NOx single regenerative burner, and belongs to the technical field of single regenerative burning devices on heating furnaces and heat treatment furnaces. The burner comprises a porous burner brick, an air heat storage box, a heat storage body and a gas spray pipe, wherein the porous burner brick is made of a refractory castable the same asthe material of a furnace wall through integral casting forming, and the porous burner brick is mounted at the front end of the air heat storage box; the heat storage body is arranged in the air heatstorage box; the gas spray pipe is mounted at the upper part or the lower part of the air heat storage box, the front end of the air heat storage box extends into the furnace wall by 150 mm, and the air heat storage box is continuously welded with a furnace wall steel plate. The burner has the advantages that combustion-supporting air can be preheated to 1000 DEG C or higher, waste heat is recovered efficiently, and fuel consumption is reduced; meanwhile, lean oxygen combustion of fuel in a furnace is realized by adopting a lean oxygen combustion mechanism, generation of NOx in the combustionprocess is effectively inhibited in the combustion process, and emission of pollutants is greatly reduced.

The invention provides a collarless round-collarband sewing process of an elastic fabric. The process comprises the following steps: cutting out round-collarband garment parts of the elastic fabric, wherein before sewing, a straight-silk lining bar with the width being 1cm is sewn to the back side of the neckline part in an adhesion manner, so that the problem that the collarband part is subjected to oblique-silk cutting, therefore, the size of the neckline can become large easily after sewing is solved; sewing the cut-out garment parts of the elastic fabric and the lining, wherein after sewing, the length difference between the contour line and the sewing line needs to be reduced; sewing an invisible line at the position, 0.1cm-0.2cm away from the sewing line, of the sewing edge, wherein when the invisible line of the collarband is sewn, an oblique-silk lining bar with the width being about 1.2cm is additionally sewn under the back side of the lining, and the side, with colloidal particles, of the oblique-silk lining bar is opposite to the back side of the lining; carrying out reverse ironing on the collarband, so that the oblique-silk lining bar is ironed to the elastic fabric in an adhesion manner, therefore, the sewing edge is fixed to the elastic fabric, further, the hardness of the elastic fabric is enhanced, finally, the support force is increased, and the problem that the sewing edge upwarps, consequently, the collarband turns outwards is solved.

A zoom lens system includes, in order from an object side to an image side, a first positive lens group (G1), a second negative lens group (G2), a third positive lens group (G3), and a fourth positive lens group (G4). The second and third lens groups are movable for varying the focal length. The zoom lens system offers a four-times zoom ratio, and employs two plastic aspheric lenses (L3, L9) and a resin hybrid lens (L6). The first lens group consists of two lenses (L1, L2) arranged in an abutting relationship. The second and third lens groups each includes a pair of cemented lenses (L4, L5; L7, L8).

The invention discloses an intelligent cage system for detecting jellyfish habits, which comprises: at least one anchoring block made of a flexible material, wherein the outer side of each anchoring block is wrapped with a net cover; a plurality of probes arranged on the anchoring blocks at intervals, wherein at least one nozzle is arranged between every two adjacent probes; at least one sonar unit, wherein the sonar units carry out jellyfish research through sound waves; and at least one floating-sinking block capable of adjusting the depth of water in a cage. The change in water pressure ofthe cage is regulated through the floating-sinking blocks, so that the shape of the jellyfish in different environments is studied; meanwhile, the habits, physiological change, fluid flow velocity andother indexes of the jellyfish in different laminar flow regions are monitored through a camera device, so that the flexibility of the cage system is improved.

The invention relates to a leg protector for field hiking. The leg protector comprises a leg protecting sleeve and a shoe protecting sleeve. A sleeve hole is formed in the upper edge of the leg protecting sleeve, an adjusting rope penetrates the sleeve hole, a tightness adjusting belt is arranged at the lower edge of the leg protecting sleeve, the upper edge of the shoe protecting sleeve and the lower edge of the shoe protecting sleeve are connected into a whole, a stamping fixing belt is arranged inside the shoe protecting sleeve, openings are formed in the side faces of the leg protecting sleeve and the shoe protecting sleeve, and pasting belts are arranged at the opening. Vegetations are prevented from injuring inspectors in inspection and operation, pesticides are prevented from injuring skins, the leg protector has the function of connecting trousers with shoes, and foreign matters are prevented from entering the shoes and injuring the inspectors.