68results about How to "Different sizes" patented technology

The invention discloses a working size switching circuit for power transistors in a DC-DC converter, mainly solving the problem of difficulty in reaching high efficiency by the traditional DC-DC converter when in a low load state. The working size switching circuit comprises a pulse width modulation (PWM) comparing module, a first drive module, a first pair of power MOS (Metal Oxide Semiconductor) transistors, a hysteresis comparing module, a second drive module and a second pair of power MOS transistors, wherein the PWM comparing module controls the first pair of power MOS transistors to work through the first drive module; the hysteresis comparing module compares a load current with a switching threshold current to generate a judging signal and controls that the second pair of power MOS transistors does not work when the load current is lower than the switching threshold current through the second drive module and the second pair of power MOS transistors works when the load current is more than the switching threshold current, so that actually working power transistors of the DC-DC converter are different in quantity under same load conditions, and the working size of the power transistors are switched. According to the working size switching circuit, the efficiency of the DC-DC converter when in the light load state can be increased, and load currents corresponding to the switching of the working sizes of the power transistors are constant under various working duty ratios.

The present invention seeks to provide an implant configured to utilize at least two different scar-generating mechanisms that are generated in sequential or overlapping stages. For example, in one embodiment the present invention provides an expandable device that can be positioned at a desired target location within a patient to generate mechanical ablation damage. After a predetermined amount of mechanical ablation has occurred, additional ablation damage is generated by a different source, such as energy delivery, drug delivery, or inflammatory material delivery. In this respect, the overall ablation scarring can be better controlled by utilizing the ablation techniques that are most appropriate at specific phases of a technique or locations within a patient.

The invention relates to a multidrug resistant cell strain for oophoroma, which is characterized in that a human oophoroma SKOV3 cell strain is selected as a parental cell; the action concentration of chemotherapeutics of etoposide (VP16) is gradually increased from 0.1 mu g/ml to 3 mu g/ml; and drug resistant SKOV3/VP16 cell strain is established. The SKOV3/VP16 cell can stably grow, transfer and reanimate in 3 mu g/ml VP16, makes the VP16 generate drug resistant index (RI) of 21.548, and performs intersect drug on MTX, DOX, DDP, VCR, 5-Fu and MMC except the VP16. The invention aims to provide a drug resistant tumor cell model for relative study on the tumor.

The invention provides a non-shrinkage high-sound-isolation self-heat-insulation heat-isolation sand light wall module and a manufacturing method thereof and belongs to the field of wall materials. The module and the manufacturing method solve the technical problems that sand with the sand content larger than 3% can not be used as an existing wall material, cracking occurs, the sound-isolation effect is poor, and a light wall material can not serve as a self-bearing wall. A non-bearing wall module is manufactured through super-light aggregate, cement, sand, bulk cement shrinkage-preventing agents, interface activity enhancers, solution viscosity hollow particle polymer and water. A self-bearing wall module further comprises coarse aggregate. The non-bearing wall module is manufactured in the steps that materials are stirred, poured into a half-piece type mould, pressurized and formed through variable-frequency vibration and buffering, and maintained; adhesive faces are cut flattened and bonded together, and the periphery of the module is cut and flattened. The self-bearing wall module is manufactured in the steps that materials are stirred, poured in a whole-piece mould, pressurized and formed through variable-frequency vibration and buffering, and maintained. The wall module integrates non-shrinkage, self-heat-insulation, heat-isolation, high-sound-isolation and fire resistance, sand with the sand content being 3-25% is used, the manufacturing method is simple, and construction is convenient.

The invention relates to a fullerenes complex and an application of the fullerenes complex in removing free radical in smoke. A metallic organic matrix compound crystalline material is taken as a carrier, fullerenes molecules are absorbed in the surface or pores, and the obtained complex is used as the material for removing the free radical in the smoke. The result shows that the free radical in the smoke is well removed; the free radical in the cigarette smoke can be removed, and the free radical in vehicle exhaust, industrial waste gas and indoor gas can be removed as well.

The invention discloses a novel folding screwdriver. The novel folding screwdriver comprises screwdriver shells, fixing pieces, fixing shafts, screwdriver heads, retaining rings, screwdriver head groove pieces, driving lock pieces, driving lock piece fixing pieces, a rotating shaft, a manual stirring wheel and a cam piece. The novel folding screwdriver is simple in structure and convenient to use and carry. The screwdriver head groove pieces are welded to the retaining rings, and the manual stirring wheel is rotated with the hand, so that the rotating shaft and the cam piece are driven to rotate, and the driving lock pieces or locking parts are clamped in clamping grooves of the screwdriver head groove pieces. The screwdriver heads are fixed at a certain angle, and it is avoided that the screwdriver heads go back to a screwdriver handle along an original path due to uneven force exerting, the kinds of the screwdriver heads are multiple, the screwdriver heads are different in specification and replaceable and can be fixed at multiple angles, applicability is higher, and use is more convenient.

The invention relates to a dry press granulation ceramics fabrication method. It spreads the color powder on the cloth band in lamination mode, pressing the powder in the compression ratio of 30-50% to get the fine powder, which is mixed with the powder to fall freely to the movable hopper to form mixing material of various sizes, shapes grains, through mixed material screening and pressing to form the ceramic product. It is simple in process, reduced in labor cost, with product rich in decoration and natural in appearance.

The invention discloses a method for preparing a single-cell suspension of aortic cells of a mouse. The method is characterized by specifically comprising the following steps of firstly, preparing 1 ml of an enzyme mixed solution, the surviving healthy wild mouse, an operating table of which the whole tabletop is a flat ice surface and a plurality of instruments; and then, performing intraperitoneal injection anesthesia on the prepared wild mouse by 200-500 microliters of chloral hydrate until the mouse is dead, immediately performing perfusion flushing on blood vessels of the wild mouse by 20ml of a phosphate buffer salt solution, performing overall disinfection on the dead wild mouse by alcohol with the volume fraction of 75%, performing thoracotomy andlaparotomy after disinfection is completed, and exposing the heart and the aorta. The whole operation process is completed on the operating table. Preparation of a single-cell suspension of vascular tissues of the mouse by using a shearing and mixed enzyme combined digestion process is simple, convenient and feasible, more immune cells exist, and an effective tissue single-cell suspension preparation method is provided for research of vascular immune cells.

The invention relates to a morning tea bag for preserving health in autumn. The morning tea bag is prepared from 2-3 parts by weight of autumn tea and green tea particles, 1-2 parts by weight of liquorice particles and 1-2 parts by weight of Chinese wolfberry fruit particles according to the method comprising the following steps: crushing finished green tea for later use after drying; adding honey in raw liquorice tablets, crushing for later user after drying at a constant temperature; crushing fresh Chinese wolfberry fruit for later use after vacuum freeze drying; and sterilizing at a high temperature after uniformly mixing substances obtained through crushing and fried cassia seed, and sub-packaging to obtain the morning tea bag. According to the morning tea bag, according to a four-season health preserving principle, raw materials are reasonably taken and matched; and by adopting a special process, natural original tastes of the raw materials are preserved, thus a production process is simplified, and the production cost is lowered. The prepared health-preserving tea bag has the characteristics of being uniform in particles, being nutritional, being fresh and natural in taste, being mellow in aftertaste and the like, has an auxiliary relieving function on symptoms such as the stomach illness, chronic bronchitis and common cold in autumn, has a certain function of reducing fat, blood pressure and blood sugar, and is suitable for being used as morning and forenoon health-preserving tea in autumn.

A built-in redundancy analyzer and a redundancy analysis method thereof for a chip having a plurality of repairable memories are provided. The method includes the following steps. First, the identification code of a repairable memory containing a fault (“fault memory” for short) is identified and a parameter is provided according to the identification code. The parameter includes the length of row address, the length of column address, the length of word, the number of redundancy rows, and the number of redundancy columns of the fault memory. Since the parameter of every individual repairable memory is different, the fault location is converted into a general format according to the parameter for easier processing. A redundancy analysis is then performed according to the parameter and the converted fault location, and the analysis result is converted from the general format to the format of the fault memory and output to the fault memory.

The invention provides a piece of physical multi-point light attack equipment which serves as equipment for a smart card to realize physical multi-point laser pulse injection. The equipment is used mainly in the smart card information security field and serves as special equipment to detect the testing ability of a smart card product to correspond to laser disturbance. The equipment comprises a laser, optical fibers, optical fiber collimators, a CCD camera and an adjustable platform wherein the laser is connected with the two channels of optical fibers; the far ends of the two channels of optical fibers are connected with the optical fiber collimators respectively so that the light emitted by the laser from the optical fibers are in parallel. In this way, the laser energy loss is reduced; the laser energy is focused; and then, through the CCD camera, the light spots of the two laser beams are observed so as to move them to the target position on the surface of a chip that requires to be analyzed; in doing so, the physical multi-point light attack testing and analyzing can be realized. The positioning of the target position is realized through the optical fibers in connection with a handheld infrared laser which emits visible red light to ensure the accuracy of positioning. The equipment of the invention could position accurately; the laser energy loss is small; the equipment is operated conveniently; its cost is low but efficiency is high.

The invention relates to a separable assembling type bicycle hub which is provided with a rim, spokes and an axle sleeve. The rim is formed by a plurality of rim components, the rim components are fixedly connected end to end in sequence through connecting pieces, a plurality of spokes are arranged, the rim is fixedly connected with the axle sleeve through the spokes, the rim is fixedly connected with the spokes through connecting pieces, and the spokes are fixedly connected with the axle sleeve through fixing pieces. The separable assembling type bicycle hub is suitable for all kinds of bicycles, and has the advantages of being scientific in design, reasonable in structure, convenient to separate, assemble and operate, novel in style and strong in entertainment and interestingness.

The invention relates to a multi-continuous-electrode electrolytic tank for the preparation of a high-performance aluminum material, solving the problem that the aluminum material produced by the traditional aluminum electrolytic tank cannot meet the requirements on high performance. A single continuous electrode device consists of a plurality of electrode bodies and an electrode box body; a metal framework is arranged at the upper part of the electrode box body; a bearing fastening ring is arranged on an outer sidewall of the metal framework; a bearing hook connecting piece is fixedly arranged at the lower side of the bearing fastening ring; a sealing cover plate framework is arranged at the lower part of the electrode box body; conductive rods penetrate among sealing cover plates; bearing hooks are arranged between the lowest layer of conductive rods and the bearing hook connecting piece; either a filler framework or a crust-breaking, blanking and exhausting mechanism or both the filler framework and the crust-breaking, blanking and exhausting mechanism are arranged in the metal framework; and an exhaust port is arranged in a metal platform. According to the multi-continuous-electrode electrolytic tank for the preparation of the high-performance aluminum material, the working procedures, such as electrode forming, roasting, assembling and replacing, electrode scrap recovery processing and the like and corresponding environmental pollution are saved, and the multi-continuous-electrode electrolytic tank has the advantages of small investment, simple process, low running cost, simplicity and convenience in operation and energy saving and environment-friendliness.

The invention discloses a preparation process of a jellyfish droplet ceramic product, which comprises the following steps: preparing blank mud and glaze slip, and carrying out throwing molding, fettling, biscuiting and cooling on the blank mud to obtain a blank body; pouring the glaze slip into the green body, staying for 25-30 seconds, pouring out the glaze slip, airing, reversely buckling the green body into the glaze slip, soaking for 25-30 seconds, and not glazing and airing the outer bottom of the green body; and putting the glazed and air-dried green body into an electric kiln for roasting, and taking out of the kiln. A reasonable formula is obtained through scientific proportioning, an innovative firing mode is adopted, finally the jellyfish droplet ceramic product is obtained, theglaze bottom color of the ceramic product is black, oil drops are silver blue jellyfish drops, and the Jellyfish droplet ceramic product is hidden, transparent, different in size, flexible, fat and smooth in glaze and small in number of needle holes.

The invention relates to a traditional Chinese medicine preparation for treating burns and scalds through external application and a preparation method of the traditional Chinese medicine preparation, and belongs to the technical field of traditional Chinese medicines. The traditional Chinese medicine preparation is prepared from the following Chinese medical herbs: snakegourd fruits, dried alum, angelica dahurica, agastache, radix paeoniae rubra, pearls, astragalus membranaceus, almonds, groundsel, olibanum, borneol, angelica, cattail pollen, fructus forsythiae, Szechuan lovage rhizome, musk, phellodendron amurense and balm. The traditional Chinese medicine preparation is mainly used for treating the burns and scalds, and has the obvious technological advantages that the painkilling effect is instant, no blister is generated, the wound healing is rapid, and small scars are left after the burns and scalds are cured; besides, the traditional Chinese medicine preparation is stable in medicinal efficacy, simple, convenient and feasible in preparation process, and suitable for industrial mass production.

The invention provides a positionable overrunning clutch. The positionable overrunning clutch comprises an outer ring, an inner ring and a plurality of balls for connecting the outer ring with the inner ring; a groove channel is formed in the periphery of the inner side wall of the outer ring, and a corresponding groove channel is formed in the periphery of the outer side wall of the inner ring; the balls are located between the two groove channels and can roll along the groove channels; and one of the inner side wall of the outer ring and the outer side wall of the inner ring is provided with a ratchet, and the other one of the inner side wall of the outer ring and the outer side wall of the inner ring is provided with a pawl capable of being engaged with or separated from the ratchet. According to the positionable overrunning clutch, the relative positions of the inner ring and the outer ring can be fixed, when the system overruns, the performance is not affected, and when the system is engaged, the relative positions of the inner ring and the outer ring are fixed and unchanged.

The invention provides a fabric with a starry-sky flicker effect and a preparation method thereof. The fabric with the starry-sky flicker effect is of a double-sided weave structure, a hollow structure is arranged in the middle and provided with pad lining yarn weaves, and the pad lining yarn weaves are woven from polyester yarn. The fabric with the starry-sky flicker effect is woven by means of an eight-mold weaving method. The fabric has the starry-sky flicker effect and the advantages of good comfort, breathability and elasticity.

The invention discloses an L-shaped clamp-adopted steel pipe signboard stretchable frame, and belongs to the technical field of electric power system signboard installation devices. The L-shaped clamp-adopted steel pipe signboard stretchable frame comprises a first L-shaped mounting frame and a second L-shaped mounting frame, the second L-shaped mounting frame is mounted on a cross-shaped structure, wherein the cross-shaped structure comprises a linear horizontal frame, one end of the linear horizontal frame is mounted on the second L-shaped mounting frame, the other end of the linear horizontal frame is arranged to be of a slot type structure, a horizontal extension plate is inserted into the slot type structure, a vertical frame body perpendicular to the linear horizontal frame is weldedto the position, close to the slot type structure, of the linear horizontal frame, the upper end and the lower end of the vertical frame body each are arranged to be of a slot type structure, and vertical extension plates are inserted into the corresponding slot type structures, and bolt mounting holes are formed in the first L-shaped mounting frame, the second L-shaped mounting frame, the linearhorizontal frame, the vertical frame body, the horizontal extension plate and the vertical extension plates. The L-shaped clamp-adopted steel pipe signboard stretchable frame can be universally usedfor mounting of signboards of various sizes, the mounting process is fast, and the mounting effect is good.

The invention relates to an antioxidant beautifying mask and a preparation method thereof, and belongs to the technical field of cosmetics. The preparation method comprises the following steps: gelatinizing 10-30 weight parts of castanopsis sclerophylla powder to obtain a gelatinized castanopsis sclerophylla powder solution; dissolving 5-30 weight parts of chitosan in an acidic solution to obtaina chitosan solution; mixing the gelatinized castanopsis sclerophylla powder solution and the chitosan solution to obtain a stock solution; mixing the stock solution, 5-8 weight parts of an emulsifyingagent, 5-15 weight parts of a wetting agent, 0.1-3 weight parts of a preservative, 0.1-5 weight parts of a pH value regulator and 0.1-0.4 weight part of an essence, moulding, drying and uncovering afilm. The preparation method is simple and easy to operate, and a finished product is good in quality; the mask prepared with the preparation method uses environment-friendly, mild and non-irritant raw materials, has relatively good antioxidant and bacteriostatic effects, and is conductive to discharge of facial cosmetic residues.

The invention provides an electromagnetic-control-based automatic closing device for refrigerators, and relates to the technical field of household appliances. The electromagnetic-control-based automatic closing device for the refrigerators comprises a box body, the inner wall of the right side of the box body is fixedly connected with an electromagnet I, the inner wall of the box body is movablyconnected with a sleeve rod, the inner wall of the bottom of the sleeve rod is fixedly connected with an electromagnet II, the bottom wall of inside of the sleeve rod is fixedly connected with a spring I, and the top of the spring I is fixedly connected with a movable electric block. According to the electromagnetic-control-based automatic closing device for the refrigerators, through cooperativeuse of the electromagnet I and the electromagnet II, when a door body is opened, the movable electric block is electrically connected to a conductive block, at the moment, the electromagnetic II is inthe energized state and produce magnetism same as that of the left side of a magnetic plate, the magnetic plate receives the repulsive force and drives a movable rod to contract to the inner side ofthe sleeve rod, and the magnetism on the right side of the magnetic plate is opposite to the magnetism on the left side of the electromagnetic I, the magnetic plate is attracted to the top, the effectof automatically closing the door is achieved, it is effectively guaranteed that the box door is in a closed state, and the service life of the refrigerator is prolonged.