256results about How to "Reduce exposed area" patented technology

The invention discloses a stepped on-pillar continuous filling mining method for deep well super high large breaking ore body panel. An ore body is divided into a front part and a rear part in a super high large breaking ore body center by an transportation roadway, then the front part and the rear part are respectively divided into a plurality of panels, no pillar exists between pillars, each panel is partitioned into a primary extracting drift and a second extracting drift, the panels in the front part are extracted at first and then the panels in the rear part are extracted, the front and rear panels are extracted in a stepped manner, each production technology is carried out in the same level, and procedures can not influence each other; after the stop back production is finished, the primary extracting drift is filled with cement and the secondary extracting drift is filled by classifying tailings while roof-contacted filling is ensured; and the primary extraction drift and the secondary extraction drift adopt high strength filling topping, and binding materials are added in the filling tailings so as to improve the compression strength of a topping layer. The invention has the characteristics of high extraction safety, small loss and dilution, high mechanical degree, large stope amount, large back production strength, high production capability, short back production time and the like.

A pillow blanket comprises a blanket, foot pocket and a pair of sleeves. The foot pocket is made of a pocket panel secured at the side and bottom edges of the panel to the middle third portion of the blanket and the bottom edge of the blanket. A pair of sleeves is attached respectively to the perimeter of a pair of sleeve apertures in the blanket. The sleeve apertures have an oblong shape and oblique orientation. The blanket can be folded into the foot pocket to form a symmetrical pillow.

The present invention provides an electrolysis system and an electrolysis method for the same in which non-purified water containing a trace amount of alkali earth metal ions, such as calcium ion and magnesium ion is applied as raw material, having a configuration in which the raw material water is supplied to the cathode compartment (1), featuring that scale of the alkali earth metals including hydroxide can be prevented from depositing on the surface of the cathode (2) provided in the cathode compartment (1). The present invention prevents scales of hydroxide and others of the alkali earth metal from depositing on the cathode surface (2), by covering the substantially entire surface of the cathode (2) with the cation exchange resin-contained, alkali earth metal scale-preventive film in the electrolysis system having a configuration comprising a diaphragm (5), an anode compartment (3) separated by the diaphragm (5), a cathode compartment (1) separated by the diaphragm (5), an anode (4) provided in the anode compartment (3), a cathode (2) provided in the cathode compartment (1), and raw material water containing alkali earth metal ions supplied to the cathode compartment.

The invention relates to an LED chip and a processing technology thereof, and belongs to the technical field of manufacturing of photoelectron devices. The technology comprises the following steps: a P-type nitride layer on an epitaxial wafer substrate is etched to expose an N-type nitride layer; a current blocking layer is manufactured under a P-type electrode bonding pad area, an insulating substance under the P-type electrode bonding pad area, an insulating substance in direct contact with an N-type electrode bonding pad, and an expanding electrode and the P-type nitride layer, and an insulating substance on the side walls of a quantum well and P-type nitride are reserved through etching; an ITO film deposits on the surface of the substrate, a current expanding layer and alloy are manufactured through photoetching, a metal layer is formed on the surface of the substrate through vapor deposition, and after a part of the metal layer is stripped, a P-type electrode bonding pad, an N-type electrode bonding pad and an N metal expanding electrode are formed. Both the P-type electrode bonding pad and the N-type electrode bonding pad of the product are positioned on a P-type light-emitting surface and are the same in height; a part or all of the N metal expanding electrode is in direct contact with the N-type nitride layer. The invention has the advantages that the routing is convenient, the light-emitting efficiency and the brightness of the LED chip on the nitride substrate can be improved.

The invention discloses a phase-changing storage component and its manufacturing method, which is to bury the discoid phase transformation layer into the insulating material, use lithography technique to generate the center penetration hole which runs through and locates at the center of layer, and the ring penetration hole which rounds the center of penetration hole and locates on the verge of layer. At this time, the heating electrode installed in the center penetration hole heats the layer in Joule, and reduces the contacting areas by controlling the thickness of layer. Moreover, a ring second electrode is set in the ring penetration hole, through which, the heat which is sent to the ring interface between transformation layers diffuses, avoiding the heat diffuses to the borders of lay external, and furthermore avoiding etching defects and / or remnants spreading to the materials to lead to abnormal phase change.

A simple fuel cell-type electrochemical sensor for sensing the concentration of a specific fuel, e.g., methanol, ethanol, formic acid, sodium borohydride, etc., prepared in an aqueous solution is developed. The sensor is mainly composed of a membrane electrode assembly (MEA), which is made by hot pressing a piece of electro catalytic anode and a piece of electro catalytic cathode on each side of a proton exchange membrane (PEM), such as Nafion® 117. It is uniquely designed to have an anode size much smaller than that of the cathode and utilizes ambient air as an oxidant. The innovative approach is to ensure the fuel diffused to the anode/membrane interface can be totally reacted so as to eliminate the interferences of fuel crossover and enhance output signal. Thus, the measured sensor current reflects the concentration of diffusion-limited fuel at the membrane/electrode interface, which is proportional to fuel concentration in the bulk. It can be easily operated in a passive mode as well as in an active mode with aqueous fuel solution under a stagnant or a flowing condition. The applications include uses in fuel cell systems, such as direct methanol fuel cell systems, for sensing and monitoring fuel concentration in an aqueous solution.

The invention provides an air gap forming method which includes: firstly, a metal interconnection structure is provided, and the metal interconnection structure comprises metal structures and an intermetallic dielectric layer between the metal structures; photoetching and etching are performed on the intermetallic dielectric layer of the metal interconnection structure to form air gaps; the air gaps are sealed by a deposition interlayer dielectric layer; finally a conductive plug is manufactured on the interlayer dielectric layer; and the air gaps formed in the photoetching and etching step are of a plurality of D-shaped structures which are distributed in the shape of a honeycomb and have small top and bottom areas and a large middle area. The invention further provides the air gap structures and a semiconductor device with the structures. A top dielectric layer formed by the technical scheme is enhanced in mechanical strength, is not prone to collapse, and has low requirements on self-alignment accuracy when through holes are formed in a next process.

The invention provides an atomizer. The atomizer comprises a cartridge, a base component detachably connected with the smoke bomb and an atomizer head arranged on the base component, the cartridge comprises a smoke flue in airflow communication with the atomizer head, and the cartridge is movably connected with the atomizer head in an axial direction; fluid communication between the cartridge andthe atomizer head is communicated or cut off by axial displacement, when the cartridge is in fluid communication with the atomizer head, the atomizer body protrudes from the smoke flue to make a usertake a cigarette. According to the atomizer, when the cartridge is separated with the base component, a drip tip can be retracted, and an exposed area of the drip tip can be reduced to decrease the possibility of bacterial infection. The invention further provides an electronic cigarette with the atomizer.

The invention relates to a high-ground-stress large ore body downward sublevel filling mining method. The high-ground-stress large ore body downward sublevel filling mining method comprises the stepsof layering the top of an ore body to be recovered; diving the ore body into sublevels and mid-levels for recovery; digging up a filling ventilation roadway and a drilling and ore discharging roadwayinside a working site, and performing primary filling after recovery is completed; before recovery is implemented, digging up a drilling chamber and drilling out vertical blastholes to form a cut vertical groove, forming upward sector-shaped blastholes in the drilling ore discharging roadway, and sequentially performing recovery section powder charging, detonation, ventilation and ore discharginguntil recovery of a recovery section is completed; building a filling retaining wall after recovery is completed, and starting operation in a next recovery section; filling the goaf after recovery ofevery section is completed to achieve a recovery and filling medium-length hole ore breakdown recovery process. Under the premise of improving the productivity of the working site, the high-ground-stress large ore body downward sublevel filling mining method achieves control over the exposed area of the goaf, avoids the problem of large-area and long-time exposure of the goaf and reduces the riskof instability of the working site.

The invention discloses a method for storing fertilizer and water in holes by film coverage, belonging to the technical field of fertilization. The method for storing the fertilizer and the water in the holes by film coverage comprises the following steps specifically: building ridges, ditching, digging the holes, putting straw bundles in the holes, applying fertilizer to the holes and irrigating the holes, covering the holes by plastic films; pressing the edges of the plastic films tightly by soil, digging a hole with a diameter of 10 cm in the center of each hole by a thin film hole puncher, inserting a rain-collecting fertilizer applicator in the center of each hole along the center of the hole of the plastic film until the upper edge of the rain-collecting fertilizer applicator is inserted in the hole. By adoption of the method for storing the fertilizer and the water in the holes by film coverage, rain and snow are sent to the effective parts of fruit tree roots with well developed root systems for absorbing water by the rain-collecting fertilizer applicators so as to meet needs of the fruit trees; therefore, the non-available water is changed into effective water; meanwhile, by film coverage, the low temperature is improved and the soil moisture evaporation is reduced; the fruit garden can save water by more than 70%; the manpower and material resources investment is reduced; the method has an effect of saving resources and cost.

The invention provides a block-shaped cutting, jacking and pushing ore removal mining method of double-layer extreme-thin jade ore. The method includes the steps that firstly, an ore body is divided into ore blocks according to the trend of the ore body, the ore blocks are subjected to mining-cutting for forming a back production space, and a chain saw arm is utilized for conducting transverse and vertical cutting on the upper-layer ore body and surrounding rock along a service tunnel, so that the ore body can be cut into small regular ore blocks and be separated from the upper surrounding rock and the lower surrounding rock; an air pressure jacking and pushing bag is placed in a cutting seam in the upper portion of the ore body for downward squeezing the ore body, the root of the ore body is broken for achieving ore rock separation, and the separated upper-layer ore body is taken down and transported out through a flat car; then, the chain saw arm is utilized for cutting the surrounding rock along a top plate, the jacking and pushing bag is placed in a space formed after the cutting seam and the produced ore body, and the surrounding rock is squeezed and crushed and carried to a goaf for filling the goaf; after the upper surrounding rock is cleaned, the lower-layer ore body is mined through the same cutting squeezing and filling processes. According to the block-shaped cutting, jacking and pushing ore removal mining method, pure mechanical work is adopted, operation is simple, labor intensity is small, economic benefits are high, safe operation of a mining field can be guaranteed, and the ground environment can be protected.

The invention relates to the technical field of mining, and particularly relates to an underground mining method for gently-inclined medium-thick or thick phosphorus ore bodies. The underground miningmethod for the gently-inclined medium-thick or thick phosphorus ore bodies comprises the following steps: dividing a middle section in the inclination direction of the ore bodies, dividing a panel inthe orientation direction of the ore bodies, and dividing a sub-layer in the panel in the inclination direction; dividing a stope in the sub-layer in the orientation direction; constructing a drilling roadway in the stope in a roof direction; and then constructing two drilling roadways along a bottom plate of the ore bodies. According to the underground mining method for the gently-inclined medium-thick or thick phosphorus ore bodies, the original thick ore bodies are divided into two parts during extraction, so that the roof exposure area of the stope is reduced, the working time of personnel and equipment in an open stope is reduced, and the safety of the personnel and equipment in an extraction process is greatly improved; and meanwhile, triangular ores on the bottom plate can be efficiently recovered, so that the recovery rate for the ores is greatly increased.

A mulching method for sugarcane weeding mulching films on all ground and in a whole growing period comprises the steps that after sugarcane cultivation earthing or perennial root sugarcane loose stalk base fertilizer application is conducted, the wide mulching films are adopted for wholly covering the sugarcane ground surface, gaps are not reserved among the films, the mulching films are connected to achieve covering and are compacted at the joints through soil, and a relatively-sealed water, fertilizer and temperature circulating system is formed on the part below the ground surface of a sugarcane field. When the mulching films are arranged in the covering mode, the mulching films are compacted at the centers of sugarcane furrows with fine soil, and the mulching films are arranged in the covering mode until harvesting is conducted.

The invention discloses a fire preventing and extinguishing gel for coal mines, and a preparation method thereof. According to the invention, sodium carboxymethyl cellulose is used as a polymer, zirconium citrate with a cross-linking effect is introduced, gluconic acid-delta-lactone capable of controlling a gelling time by controlling the zirconium ion release speed is taken as a pH modifier, andascorbic acid for inhibiting the activity of coal free radicals is added; the gel is easy to prepare, the gelling time is controllable, and the gels with different proportions can be selected according to different requirements to meet the time requirement; physical and chemical effects are combined to extinguish fire, and the effect is remarkable; the state is stable and can be restored to the original state after being physically destroyed, and a good colloidal state is still kept after one month; and the gel has good viscoelasticity and strong thermal stability, can meet the requirements ofmine fire prevention and extinguishment sites, and is suitable for coal mine fire prevention and extinguishment.

The invention relates to a reactor core melt capturing apparatus capable of realizing reinforced cooling through split charging, belonging to the technical field of nuclear safety control. The reactorcore melt capturing apparatus comprises a reactor pit, a reactor pressure vessel, a melt retention container, crucibles, a retention water tank, a cooling water tank and connecting pipelines, whereinthe melt retention container with an opened top is located in the reactor pit; the lower part and the bottom of the reactor pressure vessel are located in the melt retention container; space, locatedbelow the melt retention container, in the reaction pit forms cooling space; the crucibles are arranged in the reaction pit and located below the base plate of the melt retention container; the retention water tank is located out of the reaction pit and connected with the reaction pit via one connecting pipeline; and the cooling water tank is located out of the reaction pit and connected with thecooling space via another connecting pipeline. The reactor core melt capturing apparatus provided by the invention can cope with serious accidents in a nuclear power station by employing compactly arranged core catchers with high cooling efficiency and realizing effective capturing and accommodating of core melts through temporary retention and reinforced cooling via split charging.

The invention relates to a ball grid array (BGA) encapsulating structure of adhesive-sealing the bottom of the baseplate, mainly comprising a wafer, a baseplate, a model encapsulating colloid and a plurality of solder balls. The baseplate has a surface jointing plate, and a plurality of ball pads and a solder-preventing layer. The model encapsulating colloid at least covers the surface jointing plate of the baseplate and has a plurality of ball-holding holes corresponding to the solder balls, and the sizes of the openings of the ball-holding holes are larger than those of the holes in the solder-preventing layer so as to keep the solder balls away from the model encapsulating colloid. The solder balls are aligned to the ball-holding holes and are jointed to the ball pads of the baseplate, by which the humidity resistance of BGA products is enhanced, and the solder balls are kept not to drop without the pushing from the stress of the encapsulating colloid.