170results about How to "Reduce length requirements" patented technology

The present invention provides improved ingress of therapeutic and other moieties into cellular targets. In accordance with preferred embodiments, complexes are provided which carry primary moieties, chiefly therapeutic moieties, to such target cells. Such complexes preferably feature cell surface receptor ligands to provide specificity. Such ligands are preferably bound to primary moieties through polyfunctional manifold compounds.

The invention discloses an intelligent auxiliary parking method, which comprises the following steps of: planning parking paths in two parts, wherein in-space regulation paths are planned, and then storage paths are planned; and providing a human-computer interaction interface, receiving the intention of a driver, and displaying parking information. An intelligent auxiliary parking system for implementing the method comprises an environment sensing unit, a path planning unit, a driving control unit and a human-computer interface unit, which are in communication contact with one another. A vehicle can be guided into a parking space from any starting position, so that the number of times of pivot steering and changes in forward and backward movement of the vehicle in a parking process can be reduced; and under a parallel parking condition, a proper parking space can be selected according to the maximum permissible number of in-space regulation set by the driver, so that the requirements of the vehicle on the length of a parallel parking space are lowered.

The invention provides a vehicle conveying device which comprises two trolleys connected at front and rear. The central distance of the two trolleys can be adjusted by a telescopic adjusting device arranged between the frames of the two trolleys, the two trolleys respectively comprises a frame, a running mechanism arranged on the frame, a clamping and lifting mechanism arranged on the frame and directive wheels arranged at the left side and the right side of the frame symmetrically. The vehicle conveying device occupies less space, is particularly suitable to the vehicle conveying device of mechanical parking systems, and can realize the car taking of rearrange garages.

The present invention provides an aircraft having variable airframe geometry for accommodating efficient flight. The aircraft includes an elongated fuselage, an oblique wing pivotally connected with said fuselage, a wing pivoting mechanism connected with said oblique wing and said fuselage, and a brace operably connected between said oblique wing and said fuselage. The present invention also provides an aircraft having an elongated fuselage, an oblique wing pivotally connected with said fuselage, a wing pivoting mechanism connected with said oblique wing and said fuselage, a propulsion system pivotally connected with said oblique wing, and a brace operably connected between said propulsion system and said fuselage.

The invention discloses an artificial aneurysm neck and a production method thereof. The artificial aneurysm neck comprises a tubular outer wall and a tubular inner passage arranged in the outer wall, the inner passage is of a hollow structure, and two ends of the inner passage are hermetically connected with the outer wall. The outer wall or/and the inner passage is composed of a tubular tectorial membrane and a metal support arranged on the surface of the tubular tectorial membrane. The artificial aneurysm neck is guided to a normal aorta at the near end of a lesion position and then released during operation, the metal support supports the tectorial membrane on the wall of a normal blood vessel, and fitting between the artificial aneurysm and the normal blood vessel is guaranteed; a tectorial membrane support is enabled to isolate aneurysm from blood flow in a blood vessel cavity, and a blood flow passage of the aorta and branched blood vessels is built; due to using of the artificial aneurysm neck, requirements on structure of the tectorial membrane support are lowered, the artificial aneurysm neck can be realized through a straight-tube tectorial membrane support, requirements on length of the aneurysm neck are low, the artificial aneurysm neck is suitable for cases with extremely short aneurysm necks, production process is simplified obviously, processing cost can be lowered, and production efficiency can be improved.

The invention discloses a balanced transition circuit of a microstrip-substrate integrated waveguide based on probe feeding. The transition circuit comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, a first metal paster, a second metal paster, four input/output transmission lines and four resonators, wherein first metallized through holes are formed in the second dielectric substrate and the third dielectric substrate to form a substrate integrated waveguide; the first metal paster forms ground of the input/output transmission lines; the resonators are arranged on the upper surface of the third dielectric substrate; the second metal paster forms ground of the substrate integrated waveguide; and four second metallized through holes penetrate through the first dielectric substrate, the first metal paster and the second dielectric substrate. The input/output transmission lines are fed into the substrate integrated waveguide by the second metallized through holes and the resonators at half-wavelength distances, so that a differential signal passes through and a common mode signal is inhibited; and the resonators and the bottom surface of the substrate integrated waveguide arranged below form equivalent capacitance, so that a requirement for the length of a probe is reduced, a requirement for the thickness of the substrate integrated waveguide is reduced, and the thickness of the circuit is reduced.

The invention discloses a shaver head and an assembling method thereof. The shaver head comprises a shell, a clamping piece and a shaving blade, wherein the shell is provided with a front edge, a rear edge, a side edge and a through hole positioned between the front edge and the rear edge; the shaving blade is assembled on the side edge along the first direction and is stopped by the side edge; the through hole sequentially comprises a connecting hole and a counter bore along the first direction; the counter bore is connected with the connecting hole; a step structure is arranged between the connecting hole and the counter bore in a surrounded manner; the clamping piece comprises an abutting pressing section, an inserting section and a twisting section; the abutting pressing section stretches across the shaving blade; the inserting section is bent relative to the abutting pressing section; the twisting section is connected with the inserting section and is positioned in the counter bore and in front of the inserting section; the twisting section and the inserting section in the connecting hole are staggered from each other; the twisting section is also abutted to the step structure; the inserting section can be downwards tightened by the twisting section; the abutting pressing section is abutted to and pressed against the shaving blade along the first direction when the inserting section is tightened by the twisting section; and the shaving blade is clamped between the abutting pressing section and the side edge, so that the shaving blade is clamped reliably, and the utilizing efficiency of the clamping piece is high.

The invention discloses a compact telescopic objective lens with long focal length and four mirrors. According to the incident direction of light, it is an elliptical surface primary mirror, a hyperboloid secondary mirror, an elliptical surface three mirrors, an elliptic surface four mirrors, a plane reflector and a focal plane. ; The main mirror, secondary mirror, third mirror, and fourth mirror have a symmetrical structure on the main optical axis, which is the imaging of the field of view without a secondary obscuring surface; the aperture stop is located at the primary mirror, and the four mirrors are located at the primary real image formed by the primary and secondary mirrors. After the incident light from the scene is reflected by the primary mirror and the secondary mirror, an intermediate real image is formed in front of the three mirrors, reflected by the three and four mirrors, passes through the center hole of the three mirrors without obstruction, and is imaged at the focal plane after turning the light path through the plane mirror. The invention realizes imaging of the field of view without a secondary obscuring surface by reasonably controlling the position of the exit pupil and the distance between the mirrors. The system has the advantages of long focal length, short barrel length, small size, compact structure, good imaging quality, and low processing cost, and meets the needs of light and small optical systems in imaging fields such as space remote sensing video cameras and imaging spectrometer front objective lenses.

A clamp body includes a first clamping member and a clamping seat that are integrally formed together, a pivot hole formed in the clamping seat, and a second clamping member pivotally connected to the pivot hole. Also included are an elongated through hole formed in the first clamping member, a circular arc wall extending from the elongated through hole and gradually shallowing from a depth, a position-limiting axle between inside wall surfaces of the second clamping member, a tightness adjusting assembly including a rounded-head pushing rod, and a rotation assembly for coupling the clamp body and the holder. As such, the clamp body that has one arm to fix and one arm to move could improve stability of clamping. The arrangement of the elongated through hole and the circular arc wall gradually shallowing from a depth is used to reduce a size of the tightness adjusting assembly projecting to outside.

The invention relates to a novel vascularized tissue-engineered bone which comprises a cylinder support material, two internal axially-preset circular tunnels and arteriovenous blood vessel peduncles. The cylinder support material is a medical absorbable material, the two internal axially-preset circular tunnels are parallel to each other, an outlet circular chamfer is arranged at an outlet, and human or animal osteogenic induction stem cells are evenly distributed inside the circular tunnels. The arteriovenous blood vessel peduncles comprise arteries, veins and arteriovenous grafts, the arteries, the veins and the arteriovenous grafts are arranged on receptor blood vessel peduncles, the arteriovenous blood vessel peduncles are arranged in the support material and are arranged in parallel in a separated mode, and distal blood vessels are anastomosed or ligatured. According to the novel vascularized tissue-engineered bone, the tissue-engineered bone can be vascularized fast, fully, safely and effectively after transplantation, the clinical effects are effectively improved, good nutrition supply and the good metabolism environment are provided for transplanted cells, the osteogenic activity of the tissue-engineered bone after transplantation is promoted, and the wide clinical application of the grafts of the tissue-engineered bone is promoted.

A time division duplex framing method for the physical layer of a wireless system, wherein each frame includes a plurality of DPCH short frame structures and at least one CCPCH short frame structure. The short frame structure of each DPCH can be allocated to uplink or downlink, and contains a plurality of time slots, and the number of the time slots can be determined by the number of pulses of an LA code, the time slots The length of the slot varies with the pulse interval of the LA code, and each time slot can be modulated by a selected orthogonal spreading code. The short frame structure of the CCPCH may be allocated to the downlink in the even/odd frame, and allocated to the uplink in the odd/even frame. The method of the invention can greatly reduce adjacent cell interference (ACI), the requirement for the number of spreading codes, and the requirement for the length of spreading codes in a wireless system. At the same time, it can ideally support mobile IP services.

The invention relates to an ultrashort base line magnetic declination measuring method based on a gyro theodolite. The main technical characteristics are as follows: erecting a magnetic theodolite and a gyro theodolite respectively on a primary measuring point and an auxiliary measuring point on a base observing line, centering and leveling respectively, then aiming at each other by telescopes, and locking the telescopes of the magnetic theodolite and the gyro theodolite still; using the sight axis of the magnetic theodolite and the gyro theodolite as the aiming direction of the geodetic azimuth and magnetic declination of the base observing line; measuring the geodetic azimuth alpha of the base observing line; measuring the magnetic azimuth alpham of the base observing line; and calculating the magnetic declination D of the base observing line. By adopting the method of aiming the magnetic theodolite and the gyro theodolite with each other, the centering error is greatly reduced, the length requirement of the base observing line is lowered, the measurement of magnetic declination can be relatively suitable for being used performed on an island reef with the small area and insufficient effective sight distance, the measuring precision is ensured, and the problem of measurement of the magnetic declination of an ultrashort base line is effectively solved.

The invention discloses a wool drafting and thinning technique. The wool drafting and thinning technique comprises the following steps of: pre-treating raw wool to obtain a wool fiber aggregate of which the wool fibers have drafting performance, and then performing drafting, thinning and shaping to obtain the drafted and thinned wool, wherein the wool fiber aggregate is subjected to colloid cladding after the pretreatment and before the drafting and the thinning; and the colloid is not chemically reacted with the wool, has elasticity and tensile strength, and is easy to clean. By the wool drafting and thinning technique, because the colloid perfectly holds the wool fibers, the fibers can be efficiently drafted, and further, mechanical damage to the fibers is reduced during the drafting process; and when a fiber breaks in some point, a drafting effect of other parts of the fiber is not affected, the phenomenon of non-uniformity of fibers of an inner layer and an outer layer can not be caused, the length requirement for the raw material fibers is low, and even, short fibers can be effectively drafted and thinned.

Provided is a coaxial three-mirror zooming optical system based on photoisomerization materials. The coaxial three-mirror zooming optical system based on the photoisomerization materials comprises a primary mirror, a secondary mirror, a tertiary mirror and a caliber-variable diaphragm, wherein the caliber-variable diaphragm is located at a system exit pupil position in a short focal length mode, a system aperture diaphragm is arranged on the primary mirror, a classic R-C optical system is formed by the primary mirror and the secondary mirror, radiation light beams of a target scenery are converged by the primary mirror and the secondary mirror to form a middle real image, and the middle real image is imaged on the focal plane of the optical system through the tertiary mirror. According to the coaxial three-mirror zooming optical system based on the photoisomerization materials, the primary mirror, the secondary mirror and the tertiary mirror are made of the photoisomerization materials, changes of coefficients of aspheric surfaces of the mirrors are controlled through the material characteristics of the coaxial three-mirror zooming optical system in the zooming process of the coaxial three-mirror zooming optical system, and finally the coaxial three-mirror zooming optical system can have both the advantages of being large in focal length and high in resolution, and the advantages of being short in focal length and wide in field of view only through the changes of the coefficients of the aspheric surfaces of the mirrors and slight adjustment of the mirror spacing under the condition that the radii of curvature of all the mirrors of the optical system are unchanged.

The invention discloses a white paint spraying machine, with high lifting efficiency, for a trunk. The white paint spraying machine comprises a motor vehicle. A working arm is arranged at the front part of the motor vehicle. A spraying barrel assembly is arranged at the front end of the working arm, and comprises a left half barrel and a right half barrel, which can be opened or closed. When the left half barrel and the right half barrel are closed, the trunk is clamped between the left half barrel and the right half barrel to be sprayed with paint. A lifting mechanism is arranged between the working arm and the front part of the motor vehicle, and comprises an outer lifting cylinder, an inner lifting cylinder and a lifting cylinder. One of the outer lifting cylinder and the inner lifting cylinder is connected with the front part of the motor vehicle, and the other one is connected with the working arm. The lifting cylinder drives the outer lifting cylinder and the inner lifting cylinder to relatively move in the vertical direction. The white paint spraying machine has the advantage that the efficiency is higher when the working arm ascends or descends.

The invention discloses an embedded compound spinning frame. Two layers of unwinding brackets and four parallel unwinding rollers are arranged on an upright post of a creel; the unwinding rollers positioned on the same side of the unwinding brackets mutually drive and are connected by a vertical driving pair of the unwinding rollers; and at least one unwinding roller in the unwinding rollers on the same side of the unwinding brackets is in driving connection with a front roller of a drawing mechanism through an unwinding roller driving device. When in spinning, two rovings hung on the creel respectively enter a drawing area of the drawing mechanism in parallel through roving horn mouths for drawing; two unwound filaments roll from different unwinding rollers and respectively enter the rear side of a tong port of the front roller of the drawing mechanism through a filament guider; and the two filaments and two drawn rovings are combined on the rear side of the tong port of the same front roller, output and twisted from the front side of the tong port of the front roller and wound on a spinning tube of a spindle. The invention not only can conveniently spin short fibers and other low-grade raw materials, but also has the advantages of abundant yarn type structures, dry resultant slivers and superior filoplume indexes.

The invention discloses a transverse segmental prefabricated prestressed concrete bent cap structure and an assembling method thereof. The transverse segmental prefabricated prestressed concrete bentcap structure comprises a bent cap body and prefabricated stand columns. The bent cap body comprises a plurality of prefabricated sections spliced in the transverse direction; a hole through which a steel strand penetrates is reserved in each prefabricated section; every two adjacent prefabricated sections are connected through a wet joint section; an upper profile steel lap joint structure and alower profile steel lap joint structure which are matched with each other are pre-buried in the joint surfaces, close to the two sides of the wet joint section, of every two adjacent prefabricated sections respectively; the transverse steel bars on the top face, the bottom face and the vertical face of each prefabricated section extend into the range of the corresponding wet joint section, and thetransverse steel bars of each prefabricated section and the transverse steel bars of another adjacent prefabricated section are arranged in a staggered lap joint mode. The small-tonnage segmented prefabricated assembly of the large-volume prestressed concrete bent cap is achieved, stress of the bent cap structure can be better ensured, the structure quality is improved, and the construction speedis increased.

A framing method and its synchronous wireless system, wherein the method includes the step of: dividing the data flow into frames according to the frame length, wherein the number of subframes in each frame can be determined by the periodicity of the selected LA code. Each subframe is formed by a plurality of time slots, wherein the number of time slots can be determined by the number of pulses of the LA code, and the length of the time slot varies with the pulse interval of the LA code. and fill each slot by modulating with a selected orthogonal spreading code. Different base stations from different adjacent cells should be assigned different LA-CDMA codes, so that the adjacent cell interference can be reduced. But in adjacent cells, the same spreading code can be assigned. Therefore, the requirements on the number of spreading codes and the length of spreading codes are greatly reduced.

The invention relates to the technical field of geotechnical engineering anchoring, in particular to a recoverable inflatable umbrella support type air bag anchor rod and a using method thereof. The anchor rod comprises a hollow anchor rod body, a base plate and an inflation device are mounted at the top of the anchor rod body, the bottom of the anchor rod body comprises a square anchor head, a linkage structure is arranged on the square anchor head, an air bag is wrapped around on the outer side of the anchor head and the outer side of the linkage structure, an annular connecting lantern ring and an annular connecting piece are arranged on the side, close to the square anchor head, of the anchor rod body, air inlet holes are formed in the anchor rod body on the inner side of the air bag, a spring clamping piece for positioning the annular connecting lantern ring is arranged on the anchor rod body, the outer side of the anchor rod body is sleeved with an auxiliary jacking pipe, and a flexible brace is fixed on the annular connecting lantern ring. According to the recoverable inflatable umbrella support type air bag anchor rod and the using method thereof, the end resistance of the anchor rod is increased through umbrella support reaming, the air bag further extrudes the soil body at the end after being inflated and expanded, secondary reinforcement is achieved, and then the stress of the anchor rod is increased; and meanwhile, gas injection and grouting can both be used, and when gas injection cannot be conducted, gas injection can be replaced with grouting for secondary reinforcement.

The invention discloses a semi-grouting sleeve assembly of a precast beam steel connection of cast-in-place beam column joints and an application thereof. The semi-grouting sleeve assembly comprises asemi-grouting sleeve and an integral nut bolt, wherein the integral nut bolt is connected with the semi-grouting sleeve. The semi-grouting sleeve comprises a straight cylindrical body, one end of thestraight cylindrical body is a threaded end provided with an internal thread, the other end is a grouting end, and the outer end opening of the grouting end is used to insert a horizontally longitudinal rebar of a prefabricated laminated beam. The integral nut bolt includes a body and internal and external threads disposed on the body. The internal threads are used to connect a thread with one end of the horizontally longitudinal rebar of another prefabricated beam. The semi-grouting sleeve assembly replaces an existing full-grouting sleeve with a precast beam steel connection, the length andweight are reduced by nearly half, and the sleeve price is reduced. When the beam steel used for cast-in-place beam column joints are connected, the requirements on the length of a column section arealso correspondingly reduced, thereby avoiding the increase of the length dimension of the column section and the cost is low.