74results about How to "Wide adaptability" patented technology

The invention relates to a preparing method of a rare earth catalytic cracking double-metal deactivator. The method includes steps of: A) mixing 300-600 kg of a mother liquor A, 50-150 kg of a mother liquor B and 5-20 kg of a pH conditioner and stirring; and B) adding 30-80 kg of deionized water, stirring for 30-60 min and discharging. The catalytic cracking double-metal deactivator with wide suitability is developed, thus effectively solving a suitability problem of deactivators.

The invention relates to a heat-resistant clothing hot melt adhesive, which is characterized by comprising the following components by mass percent: 29-46.45% of hot melt adhesive, 26.1-45.52% of PE, 0.29-2.32% of bulking agent, 0.29-2.32% of sensitizer or sensitizing agent, 0.95-9.9% of nanoscale montmorillonoid or nanoscale clay, 0.05-0.5% of compatilizer, 5-20% of tackifier, 1-10% of plasticizer and 0.1-2% of antioxygen, wherein the hot melt adhesive is one or more combination of PET, PA, TPU and EVA. The preparation method comprises the following steps: 1) adding the PE, bulking agent, sensitizer or sensitizing agent into a blender and mixing for standby use; 2) adding the compatilizer and nanoscale montmorillonoid or nanoscale clay into the blender, and mixing for standby use; 3) adding the hot melt adhesive into the blender, and mixing with the blending materials obtained in the step 1 and 2; 4) slowly pouring the tackifier, plasticizer and antioxygen and mixing the materials; and 5) pelleting the obtained blending in the step 4, cooling and dicing to obtain the heat-resistant clothing hot melt adhesive. The preparation method of the invention is simple in process, and the obtained hot melt adhesive has good flexibility, adhesiveness and thermal stability.

The invention relates to a coal powder high temperature preheating method which relates to the technology of coal powder combustion. The coal powder is added in the middle and lower part of the firebox of an insulating circulating fluid bed and little air is conducted in the bottom part; a part of the coal powder is burnt. The coal powder is heated to between 800 DEG C and 1300 DEG C and the high temperature coal powder enters a cyclone separating device with the flue gas; a part of the coal powder is collected by the cyclone separating device and returned to the firebox through a material returning device; the rest coal powder is sprayed into an inflamer of a coal powder boiler with the flue gas to burn. The invention has the advantages of broad application, good combustion stability and can also cooperate with a classified air distribution technology to control the uniformities of the temperature level and distribution of a furnace, thereby greatly reducing the exhausting of NOx.

The invention relates to a preparation method of a slow-release polycarboxylic acid water reducing agent. The method comprises the following steps: preparing a 1# dropwise addition solution and a 2# dropwise addition solution; and adding deionized water into a reaction kettle, starting stirring, adding polycarboxylic acid big monomers, adding maleate and concentrated sulfuric acid to accelerate the dissolution of the polycarboxylic acid big monomers so as to obtain a 50-65 wt% solution, adding an oxidizer, stirring for 3-6 minutes, dropwisely adding the 2# dropwise addition solution at uniform speed, dropwisely adding the 1# dropwise addition solution at uniform speed after 2-10 minutes, aging for 1 hour by keeping the temperature, adding 30% liquid caustic soda until the pH value reaches 6-7, and supplementing deionized water to obtain the slow-release polycarboxylic acid water reducing agent of which the solid content is 40-45%. The method has the advantages of wider adaptability and better effects. By introducing ester bonds to the side chain, the effective group carboxyl of the water reducing agent is generated by hydrolysis in the concrete alkaline environment, thereby ensuring the continuous release capacity of the product.

The invention relates to a preparation method for cathode electrophoresis paint with combined bottom surfaces. The preparation method comprises the following steps of preparing a curing agent, matrix resin, dispersion resin, positive ion acrylic resin, an emulsion I, a positive ion acrylic emulsion, and mill base sequentially, then mixing the mill base, the emulsion I, the positive ion acrylic emulsion and deionized water according to the proportion of 1:(1-2):(3-5):(6-7), regulating the solid content of a paint working solution to be 15%-30%, after 48 hours of circulation, coating through electrophoresis so as to prepare the cathode electrophoresis paint with the combined bottom surfaces. When the cathode electrophoresis paint with the combined bottom surfaces is baked, the epoxy component with strong surface tension is deposited at the under layer, and the crylic acid component with little surface tension is on the surface layer, so that the coating with good corrosion resistance and weather resistance is formed.

The invention provides a vegetative propagation method for an SH-series apple dwarfing rootstock, which is characterized in that the SH-series apple dwarfing rootstock is buried to promote germinating new branches, and then cuttage is performed on the new branches to take root in an arched shed. The method comprises the following steps: 1, obtaining and processing of grafted seedlings of the SH-series apple dwarfing rootstock; 2, obtaining of new branches for cuttage; 3, collection and processing of new branches for cuttage; 4, good processing of cuttage of new branches; 5, management after cuttage; and 6, transplanting and management of cutting seedlings. The method breaks through the bottleneck that apple nursery stock propagation of the SH-series apple dwarfing rootstock can only be performed by an intermediate stock method, and enables the cuttage rootage rate of the SH-series apple dwarfing rootstock to reach 80%, and the transplanting survival rate to reach more than 75%. According to the method, the SH-series apple dwarfing rootstock can completely and really exert the performance of early bearing, high quality and high yield, and the characteristics of strong stress resistance, wide adaptability and good substantivity of rootstock scions. The method has wide application prospect and remarkable social and economic benefits.

The invention provides a multifunctional power electronics test system for electromobile. The system comprise a main controller and eight distributed modules, namely, a motor driving subsystem, a battery management subsystem, a power battery pack, a simulated battery pack, a charging device, a DC/DC/AC module, a motor measuring device and an adjustable load, and each distributed module comprises a microcontroller; the main controller controls the microcontrollers of the distributed module to control the whole system; the microcontrollers of the distributed modules is in data communication with the main controller to upload data to the main controller; the battery management system, the power battery pack, the simulated battery pack and the charging device form a charging closed-loop control subsystem; the motor driving subsystem, the adjustable load and the motor measuring device form a motor closed-loop control subsystem; and the main controller receives and records state and power feature data of the charging device, the power/simulation battery pack, the battery management subsystem and the motor driving subsystem, and displays, calculates and analyzes the data in real time.

The invention provides a deep fluid diversion method, which belongs to the field of petroleum extraction. By the method, a thermodynamics condition and a dynamic condition of a reaction are changed by adjusting the content of precipitated ions in injected water or/and adding an anti-scale agent with a certain concentration, so that the process of a precipitation reaction in stratum porous media can be effectively controlled, precipitates can be generated in a presumptive area on the deep part of a stratum, and the aim of deep profile control of fluid diversion can be fulfilled. By the method, the limitation that an inorganic precipitation plugging agent can only be used for profile control over water plugging in a near well is eliminated, and the application range of the inorganic precipitation plugging agent is expanded; the method has an important significance for improving water drive effects of high-water-cut reservoirs and particularly improving the water drive effects of high-temperature and high-salinity reservoirs, is suitable for various water injection reservoirs, and is easy to operate; and during operation implementation, a common water injection process can be kept unchanged by only adjusting ingredients of the injected water, and high efficiency and long-acting effects can be ensured at the same time.

The invention discloses an intelligent garage and an entering-exiting method thereof. The intelligent garage comprises a garage entrance, fixed parking spaces, a car transporter for transporting cars, and a bracket where the cars are placed, wherein drivers park cars on the bracket at the garage entrance, and the bracket and the cars are fed into a parking garage via the car transporter; the car transporter and the bracket drive a traction plate on the bracket to move through transmission chains and a traction block arranged on the car transporter, so that the bracket is driven to move. The intelligent garage is extremely wide in adaptation, can be suitable for reconstructing traditional parking lots of different types, is extremely simple in structure, is easy to manufacture, is low in cost, is easy to reconstruct, and is capable of greatly reducing admittance requirements of the intelligent garage, so that the intelligent garage is utilized more extensively; and meanwhile, extra requirements are not increased for carrying capacity of the car transporter, so that the precision requirements on the whole system can be reduced, and damages to the cars are avoided.

The invention discloses a denitrifying bacterial strain, which is named Paenibacillus sp.XP1, belongs to paenibacillus of paenibacillus ash, and has been preserved in China Center for Type Culture Collection on April 10, 2011, wherein the preservation number is CCTCC M2011120. The denitrifying bacterial strain can effectively minimize total nitrogen concentration in water, is applicable to the treatment of waste water having high concentration of nitrite or nitrate, and has wide adaptability. The process of treating waste water with the bacterial strain is simple and a stable effect of nitrogen removal is obtained. When the strain is used together with reed wetland plants, giant reed wetland plants and cattail wetland plants for nitrogen removal and simulated nitrogen containing waste water has a total nitrogen concentration of 50 mg/L, the three XP1 bacteria liquid reinforced wetlands all have a substantially improved removal rate of nitrogen, and reinforced nitrogen removal effect that the XP1 bacteria liquid exerts on the cattail wetland is obviously better than the effect exerted on the reed wetland and the giant reed wetland; when the XP1 bacteria liquid stays for 96 hours, an XP1 bacteria liquid reinforced cattail wetland has a removal rate of nitrogen of 94%, while an ordinary cattail wetland has a removal rate of nitrogen of 14%.

The invention relates to a voice enhancement method by combining empirical mode decomposition with wavelet threshold denoising. The method comprises the steps that firstly, a voice signal is subjectedto empirical mode decomposition, the eigen mode functions containing false frequency components are removed according to a cross correlation coefficient of eigen mode functions and the voice signal,and then a self-correlation function of the rest eigen mode functions is calculated; according to the self-correlation function atlas, the demarcation point of the eigen mode function component leadedby noises and the eigen mode function component leaded by the voice signal is determined, then the eigen mode function leaded by the noises is subjected to wavelet threshold denoising, finally, the voice signal is reconstructed by the eigen mode function component leaded by the signal and the eigen mode function component leaded by the noises after wavelet threshold denoising, and the enhanced voice signal is obtained. Compared with a conventional empirical mode decomposition method, the method can effectively reduce distortion of the voice signal, the denoising performance is improved, and the voice signal of the high signal to noise ratio can be obtained.

The invention discloses a greening revetment of hydraulic engineering. The greening revetment includes a dam, an upper slope, a platform, and a lower slope; the upper slope, the platform and the lowerslope are composed of a gravel layer, a steel wire mesh layer and a concrete pouring layer arranged in sequence from inside to outside; a first water collecting groove and a lamp pole are arranged onthe dam, the bottom end of the first water collecting groove is provided with a first water drainage channel, the dam is internally provided with a second water drainage channel and a second water collecting groove communicating with the first water drainage channel, a water suction pump is arranged in the second water collecting groove, and the output end of the water suction pump is connected to a water supply pipe extending out of the first water collecting pump; and the lamp pole is provided with a solar panel, lighting lamps, and a control box, a greening layer is arranged on the upper slope, and the platform is provided with a water drainage groove and a handrail. The greening revetment of hydraulic engineering has the beneficial effects of simple structure and high practicability.

The invention discloses an energy-saving and environment-friendly house made of boards. A bottom board, peripheral lateral boards and a top board are connected to form a house body. A vertical board wall is connected to the rear side of the top board. A wind wheel support and a lightning arrester are arranged at the top of the vertical board wall. The wind wheel support is used for supporting the vanes of a drum type wind-driven generator. A photovoltaic panel support is further arranged on the rear side of the top board. The photovoltaic panel support is used for supporting a plurality of polycrystalline solar panels. A solar water heater and a canopy type movable polycrystalline solar panel are arranged on the front side of the top board. The front portion of the canopy type movable polycrystalline solar panel is supported by electronic support rods. The front panel on the lower side of the canopy type movable polycrystalline solar panel is provided with a webcam. An electronic network alarming lock is arranged on a safety door. Solar heating boards are respectively arranged on the left of the safety door and on the lower side of a lighting window. The energy-saving and environment-friendly house using solar power generation and wind-driven power generation is safe, environmental friendly, efficient, energy saving and good in warm-keeping effect.

The invention relates to a welding device for straight seam single-side welding and double-side forming of conical steel pipes, which belongs to the field of machining. The welding device comprises an adjustable welding device, a welding bracket and a bearing travelling car, the adjustable welding device comprises a vertical rod connected with a telescopic sleeve through a sliding device, the sliding device is connected with a motor at the top of the vertical rod through a rope, a telescopic rod is arranged in the telescopic sleeve, and a welding device is arranged at an end of the telescopic rod. By the aid of the adjustable welding device and the bearing travelling car, the welding device for straight seam single-side welding and double-side forming of the conical steel pipes can meet the machining requirement of the conical steel pipes on straight seam welding, and is simple in structure and wide in adaptability. The effects of single-side welding and double-side forming can be achieved, and the problem of multiple welding of a welding seam is solved during straight seam welding. Both seam quality and welding efficiency are improved, consumption of welding materials and waste of manpower resources are remarkably reduced, physical injury of welders during inner seam welding is effectively avoided.

A chair comprising: a metal frame formed by a plurality of metal elements, including a seat portion having two seat support elements and a backrest portion having two backrest support elements extending upwardly from the seat portion, a flexible backrest panel and/or a flexible seat panel of plastic material having two lateral hollow portions into which respective support elements are inserted, wherein, in a rest condition, there is a transverse clearance between outer edges of said lateral hollow portions and the respective support elements and wherein, in a deformed condition of the flexible backrest panel and/or flexible seat panel said transverse clearance is reduced to zero.

The invention discloses a self suction vacuum coating method. In the method, a membrane is deposited in advance when the vacuum degree does not meet the preset value before formal membrane deposition, then deposition is stopped and vacuumizing is continued. After the gas pressure is rapidly decreased to the preset value by making use of the self suction action of the membrane, the formal membrane deposition is carried out. The method can greatly shorten the period of vacuumizing, reduce active gas composition in the residual gas, increase the purity of the membrane, and is applicable to preparing active metal or alloy membrane thereof by using physical vapor deposition method. The method has the characteristics of simple operation and strong universality without changing the original coating equipment.

The invention belongs to the recycling utilization field of phase change heat storage materials and solid waste, and in particular relates to a mesoporous-aluminosilicate-based shaping phase change material prepared from fly ash and a preparation method thereof. Mesoporous aluminum silicate is used as a carrier of the mesoporous-aluminosilicate-based shaping phase change material, an eutectic phase change material is used as a loading substance, the mesoporous-aluminosilicate-based shaping phase change material is prepared by the following method: 1) mixing the fly ash and additives, then calcining, and quenching the calcined product; 2) performing controlled acid etching; 3) drying solid-liquid separation powder to prepare mesoporous aluminosilicate powder; 4) placing the mesoporous aluminosilicate powder in vacuum conditions, and filling with an excess molten state phase change material to obtain a mixture; 5) performing solid-liquid separation of the mixture to prepare solid powder, cleaning with a solvent, and drying to obtain the mesoporous-aluminosilicate-based shaping phase change material. Channels of the cylindrical or wedge-shaped mesoporous-aluminosilicate-based shaping phase change material prepared by the method are tapered, loading of the phase change material is more continuous, compatibility is increased, and leakage rat is reduced.

The invention discloses a concrete retarder. The concrete retarder comprises the following raw materials by weight percent: 10-40% of low-grade syrup, 5-10% of primary disaccharide, 20-30% of anions, 3-8% of sodium phosphate, 1-5% of sodium tripolyphosphate, 3-8% of ammonium persulfate and 20-30% of water. The concrete retarder has the positive effects that good retarding effects are achieved through synthetic combination by utilizing common disaccharide instead of high-price sodium gluconate; in the early period, the retarder has early water reduction and retarding effects similar to the early water reduction and retarding effects of sodium gluconate; under long-time action, the concrete retarder is gradually released by utilizing slow release of carboxyl salt and maintains retarding; the concrete retarder has the greatest characteristics that the concrete retarder changes the function after achieving the aim and plays a role in accelerating setting; the concrete retarder has the advantages of wide adaptability and good retarding property at high temperature.

The invention discloses an ether-ester copolymerized polycarboxylic acid water reducer and a preparation method thereof. The method comprises the following steps: putting water, an ester polyether macromer, an ether polyether macromer and a fourth monomer (organic carboxylic acid) into a reaction kettle, and performing stirring until the materials are dissolved; adding an oxidant, performing heating, and dripping prepared liquid A and liquid B at the same time; after heat preservation, adjusting the pH value; and supplementing water until the solid content is 40%, thereby obtaining the ether-ester copolymerized polycarboxylic acid water reducer. The ether-ester copolymerized polycarboxylic acid water reducer provided by the invention copolymerizes an ether side chain and an ester side chain in a polymer, and perfectly combines the high water reducing property of an ether polycarboxylic acid water reducer with the high adaptability of an ester polycarboxylic acid water reducer, therebyobtaining a polycarboxylic acid water reducer with wide and strong adaptability, simple process and excellent performance. The polycarboxylic acid water reducer has good adaptability to different cement and good adaptability to sand and gravel materials with poor quality.

The invention discloses an environment-friendly deodorant composition, and applications thereof. The environment-friendly deodorant composition contains at least one selected from an amino acid complex of organic acid zinc and an amino acid complex of organic acid copper, guanidine and a derivative of guanidine, a stabilizing agent, and an osmotic agent at a weight ratio of 1:0.1-4.0:0.05-0.5:0.05-0.5. The environment-friendly deodorant composition is capable of satisfying green environment protection requirements, is suitable for eliminating of the stink smell of ammonia, hydrogen sulfide, methyl mercaptan, dimethyl sulfide, amide, sulfoxide, and benzene, is capable of eliminating environment pollution caused by stink smell, possesses excellent environment-friendly type deodorant performance, is low in adding amount, is simple in processing process, is obvious in effect, and is convenient for popularization and applications.

The invention discloses a method for improving a flue-cured tobacco variety Yunyan97. The method comprises the following steps of: on the basis of selecting dendranthema indicum as understock and a seedling of the flue-cured tobacco variety Yunyan97 as scion, grafting at the last ten-day period of March by adopting a side grafting method, i.e. cutting the lower end of the scion into a slowly inclined wedge-shaped plane by using a cutter, cutting the understock to reach the one fourth part of the diameter of the understock downward at a bevel angle by using the cutter, and inserting the scion into the cut of the understock; and after grafting is successful, transplanting plants into a large field. According to the method, distant hybridization is carried out on the dendranthema indicum andthe flue-cured tobacco variety Yunyan97 for the first time, and by virtue of grafting, not only can the pest and disease resistance of new plants be improved, but also the new plants have the characteristics of the flue-cured tobacco variety Yunyan97 and also have the advantages that the quality of tobacco is improved, the nicotine of tobacco is also obviously reduced and the pungency is reduced.

The invention discloses a device capable of removing micro-plastic particles in water in a ditch water inlet type seawater culture pond. The device comprises a filter box embedded in a ditch and not submerged by water flow, wherein a plurality of filter cavities allowing water to be fed from the front end and discharged from the rear end are formed in the filter tank, and a front sundries stopper,a water flow reducer, a first-stage funnel-type primary filter, a second-stage funnel-type primary filter, a first-stage grid microfilter, a second-stage grid microfilter, a third-stage grid microfilter and a rear biological stopper are arranged in each filter cavity from front to back sequentially. Compared with the prior art, the device has the advantages as follows: (1) a novel water inlet pipeline system is not needed to be rebuilt, the adaptability is wide, the universality is better, and the cost is saved; (2) the micro plastic particles in the water in the culture pond can be effectively removed; (3) modular design is adopted, so that the device can be disassembled, flushed or replaced conveniently; (4) the frequency of replacing or flushing filter screens can be reduced; (5) use is convenient, the cost is relatively low, and maintenance is simpler.

The present invention relates to an extraction technology of effective components in Chinese medicine. Specifically, the present invention relates to a novel method of using ultrasound to extract an effective component quercetin in ginkgo leaves. The method uses a design program of orthogonal experiment. Based on technical parameters of the generation method, ultrasonic intensity, functional duration, functional method, solvent type, temperature of the system, and the mixing method of ultrasound through screening and extraction process, the fresh ginkgo leaves can be prepared. The ginkgo leaves are dried at a temperature of 60 DEG C for 24 hours and crushed and screened (0.45 Mu m) to be a material. The ginkgo leaves are filled into ethanol solution of 45 percent in an ultrasonic extraction reactor; the material and solution are mixed according to a ratio (Kg: L) of 1 to from 14 to 15. The generation method of ultrasound comprises a simulated audible device of ultrasound and a radial cylindrical vibration transducer. The ultrasonic power is 100W, and the ultrasonic frequency is 28 kHz. In the extraction method, the ultrasound functions once with an interval of 5 minutes; the functional time of ultrasound is 3 minutes; the total extraction time is 32 minutes; the extraction temperature is 45 DEG C; the stirring method is an air-lift stirring way. With the methods, the extraction rate of the effective component quercetin in ginkgo leaves can reach 96.28 percent.

The invention provides a powerless-aeration biological filtering bed, which is applied to an urban domestic sewage discharging port and is used for increasing dissolved oxygen in discharged domestic sewage and promoting degradation of pollutants in sewage. The powerless-aeration biological filtering bed comprises a vertical sewage containing pipe and a biological filtering bed, wherein water enters from the bottom part of the vertical sewage containing pipe and is discharged from the top part of the vertical sewage containing pipe; the biological filtering bed consists of more than two layers of pallets with uniform water-permeable holes in the bottom parts. By virtue of the pressure of a sewage discharging pipeline, sewage enters from the bottom part of the vertical sewage containing pipe and flows into the biological filtering bed from the top part of the vertical sewage containing pipe after being collected. The powerless-aeration biological filtering bed provided by the invention has the advantages that the shape is matched with the environment of the sewage discharging port, the size can be adjustd according to the flow rate of sewage of the sewage discharging port, power is not needed for driving, the aeration efficiency is high, and the powerless-aeration biological filtering bed can be combined with other water-environment restoration technologies can be achieved.

This invention discloses one kind of subsidy tool of oil well pipeline, comprises the smooth connection slides the set of equipment, the drill rod, mine shaft motor and inflation. States inflation above has may the radial direction migration piston. Said pisto above has cylindrical in the piston the end surface leads angle roller. When work impels the piston by the ground hydraulic system along the radial direction migration, causes roller to extrude expantion tube occurs the partial distortion, this time the mine shaft motor rotates, the impetus inflates revolves, completes inflation the circumference direction distortion, above serves with in the inflation tool upper body one to above distill pressure, but inflation completes from the top downward the distortion, tightly pastes to the drive pipe endophragm which damages, thus realizes to damages the drive pipe the subsidy. Because roller with inflation the contacted area is small, thus needs the ground hydraulic system pressure is small, inflation receives the axial force is small, its place hangs, the match installment structure is simple, suitable damages the drive pipe to various types patching.

The invention relates to the field of excavator part machining, in particular to a full-automatic welding tool for an excavator movable arm assembly. The full-automatic welding tool comprises a welding robot, a position changing machine, a walking mechanism and a fixing tool. The walking mechanism is fixedly arranged on the side of the position changing machine in a horizontal state. The welding robot is fixedly arranged at the output end of the walking mechanism. The fixing tool comprises a rectangular supporting table, two shaft carriers, three pressing mechanisms, two adjustable rotating carriers and a lug plate carrier. The shaft carriers, the pressing mechanism, the adjustable rotating carriers and the lug plate carrier are arranged on the top of a rectangular supporting table. By means of the full-automatic welding tool for the excavator movable arm assembly, the movable arm assembly is fixed to the position changing machine through the fixing clamp, the walking mechanism can bematched so that the multi-axis moving welding robot can be driven to achieve the full-automatic welding process of the movable arm assembly, the welding quality and efficiency are effectively improved, meanwhile, the fixing clamp can be flexibly adjusted so as to adapt to different types of movable arm assemblies, and adaptability is wide.

The present invention relates to textile machine, and is especially one kind of two-pump two-nozzle heavy water jet loom. The loom includes frame, left side cover connected to the left wall board, upper water pump and lower water pump fixed to the left side cover, upper pump cam link rod and lower pump cam link rod in two-rod structure and connected separately to these two pumps, bearings, and shaft on the left side cover to rotate the pump cam. The present invention is superior to single-pump single-nozzle heavy water jet loom and can weave fabric with two kinds of weft fiber of great size deviation.

The invention discloses a low-serum cell culture medium with universal adaptability and a preparation method thereof, and belongs to the technical field of biochemistry, the preparation method comprises the following steps: (1), compounding solvent: dissolving trace materials into 940 to 1060 parts by mass of ultrapure water, compounding to be a solvent; (2), drying: mixing the solvent obtained in the step (1) with 1000 to 4500 parts by mass of D-glucose and drying; (3), ball milling: taking other raw materials and mixing uniformly with dried mixed materials in the step (2), then performing ball-milling, sieving through a 100-mesh screen, taking the sieved parts to prepare the culture medium. The culture medium has universal adaptability, can be applied to various cell lines such as VERO, BHK-21, A549, ST, PK-15; transition is not needed when cells is transferred from a high-serum culture medium to the low-serum cell culture medium provided by the invention during a culture process, the cells can adapt quickly, and the operation is simple and convenient.

The invention discloses a monitoring system for settlement deformation of a drill hole and a monitoring method. The monitoring system comprises a liquid pipeline arranged in a horizontal drill hole ofa rock mass, and the outer end of the hole of the liquid pipeline is connected with a liquid reservoir; a reference point serving as a datum point is arranged at a relatively non-deformed point at the bottom of the drill hole or on the exterior of the drill hole, and a plurality of measuring points are distributed in the drill hole; both the datum point and the measuring points are provided withmicro-pressure sensors; the signal output ends of all micro-pressure sensors are electrically connected on corresponding ports of a hole external pressure sensor data acquisition instrument through lead wires. After the drill hole is deformed, the liquid level difference between the liquid pipeline and the liquid reservoir is changed, the pressure generated by the liquid level difference directlyacts on the micro-pressure sensors, and the settling volume of each measuring point is obtained by virtue of pressure values before and after degeneration of the drill hole. The monitoring system andthe monitoring method disclosed by the invention has the advantages of wide adaptability, simple structure, convenient implementation, low cost and stable and reliable measured data, and provides a way for deformation monitoring of geotechnical engineering.

The invention discloses a threshold setting method and apparatus, and belongs to the field of touch screens. The threshold setting method comprises the steps of obtaining the temperature of an environment in which an electronic device is located; querying a point report threshold corresponding to the environment temperature; and setting the queried point report threshold to be a point report threshold of a touch screen in the electronic device. The technical problems that the point report threshold needs to be manually set by a user, the operation is tedious, the quantity of point report threshold options is small and the adaptability to the glove thickness is limited in related technologies are solved. The effects of automatically setting the point report threshold of the touch screen to be a reasonable value according to the environment temperature range, reducing the setting operations of the user and realizing wide adaptability to the glove thickness are achieved.