31results about How to "Reduce the chance of spreading" patented technology

The invention discloses a germanium-base substrate surface passivation method, which comprises the following steps of: cleaning a surface of a germanium-base substrate; putting the cleaned germanium-base substrate into a plasma cavity; utilizing reaction gas corresponding to multiply-bound atoms to generate a plasma; carrying out plasma bath processing on the surface of the germanium-base substrate; and applying a guiding electric field in a plasma bath processing process to guide the plasma to drift to the surface of the germanium-base substrate. Due to the processing, covalently joint of activated the multiply-bound atoms and germanium surface atoms is formed, but an interface layer containing germanium compounds is not generated, so that a surface dangling bond is passivated, the probability that the germanium surface atoms are separated from the surface of the germanium-base substrate to be dispersed is reduced, and simultaneously, the phenomenon that the thinning of the EOT is unfavorable as the interface layer is introduced is avoided. In addition, the guiding electric filed is applied, so that the formation of germanium oxides can be effectively suppressed, the passivation efficiency is improved, and the density of interfacial states is reduced.

A duck hemorrhagic oophoritis inactivated vaccine production method by using a cell line and a product thereof belong to the field of biotechnology. According to the method provided by the invention, the cell line is selected from hamster kidney cell line or African green monkey kidney cell line, and the preparation of the vaccine is accomplished by the following steps of: (1) breeding strain, (2) establishing virus seed group, (3) preparing cell venom, (4) inactivating virus, (5) washing and concentrating cell venom, (6) emulsifying and the like. The method provided by the invention has characteristics of simple and stable production process, easy operation and high security. The prepared duck hemorrhagic oophoritis inactivated vaccine has advantages of high quality, high yield, low cost, small inter-batch difference, good safety and high immune efficacy.

The invention relates to the technical field of medical protection device, in particular to a negative pressure device for preventing novel coronavirus from splashing, which is characterized in that ashell is a hollow rectangular box without a bottom surface, the rear surface of the shell is used as a tail side surface, and a through hole is formed in the tail side surface to be used as a negative pressure suction connecting hole; one end of the connecting pipe is connected with the negative pressure suction connecting hole, the other end of the connecting pipe is connected with a filter, thefilter is connected with a negative pressure device, and the negative pressure device is connected with a virus-killing device. The beneficial effect of the invention is to transfer the protection object from the operator to the patient, cut off the transmission path by controlling the source of infection, reduce the risk of infection, so as to protect the medical staff. Aerosol formed by splashed secreta and gas with viruses exhaled by a patient are sucked away and inactivated in time, which not only reduces the probability of virus diffusion and infection, but also reduces the fear and physical discomfort of medical staff, so that the accuracy of the operations is improved, and therefore the treatment effect of the patient is improved.

The invention provides a heat treatment method for improving the mechanical property of austenitic heat-resistance steel. According to the heat treatment method, the technological step is simple and effective, operation is easy, cost is low, the microstructure of the austenitic heat-resistance steel can be improved, and the mechanical property of austenitic heat-resistance steel is improved. The heat treatment method comprises the following steps that (1) raw materials are prepared according to the alloy component and the burned value and smelted and poured into alloy ingots under the vacuum environment; (2) the alloy ingots are sequentially subjected to homogenization and heat deforming treatment; (3) alloys after heating deforming are subjected to solid solution heat treatment at the temperature of 1200-1260 DEG C for 25-45 min, and then water cooling is conducted till the temperature reaches the indoor temperature; and (4) intermediate temperate short-term aging treatment is conducted, specifically, the alloys after solid solution heat treatment are heated till the temperature is 750-800 DEG C, heat preservation is conducted for 30-60 min, air cooling is conducted till the temperature reaches the indoor temperature, the austenitic heat-resistance steel is obtained, nano-scale Z phases are obtained in crystals, and M23C6 phases are obtained in crystal boundaries.

The invention provides a solar cell and a preparation method thereof. The solar cell comprises a semiconductor substrate layer, a first intrinsic semiconductor layer positioned on one side of the semiconductor substrate layer, and a P-type semiconductor layer located on the side, which is back to the semiconductor substrate layer, of the first intrinsic semiconductor layer, wherein the P-type semiconductor layer comprises a first P-type sub-semiconductor film to an Mth P-type sub-semiconductor film which are sequentially stacked in the direction from the semiconductor substrate layer to the first intrinsic semiconductor layer; the concentration of P-type ions in the Mth layer of P-type sub-semiconductor film to the first layer of P-type sub-semiconductor film is gradually reduced in sequence; and M is an integer greater than or equal to 2. The open-circuit voltage and the conversion efficiency of the solar cell are improved.

The present invention relates to the technical field of palace lifters, in particular to a multifunctional palace lifter, the structure of which is that the central guide rod is a hollow structure, and the top end is provided with an anti-perforation device; the anti-falling device is located in a groove on the upper part of the central guide rod , the lifting sleeve includes the lifting cup and the connecting sleeve, the lifting cup is installed under the anti-falling device on the central guide rod through its installation hole, the connecting sleeve is sleeved on the central guide rod and located under the lifting cup, The lower end surface of the lifting cup and the upper end of the connecting sleeve are fixed together. The sealing device is arranged on the connecting sleeve and is located below the toasting cup. After the sealing device is inflated, it can fill the gap between the connecting sleeve and the vaginal wall; the holding device is fixed with the lower end of the connecting sleeve, and the central guide rod passes through After holding the device, it extends downwards, and the transmission device is arranged on the central guide rod of the extended part. This uterine lift has the characteristics of fully exposing the parauterine tissue, preventing perforation, preventing vaginal abrasions, and reducing the probability of tumor spreading to the pelvis and abdomen.

The invention relates to an amorphous CrSiCN coating and a preparation method, application and conductive film thereof; wherein, in the preparation method of the amorphous CrSiCN coating, under vacuum conditions, a CrSi alloy target is used as the target material, and an inert gas is introduced into it. , C 2 H 2 and N 2 , and vapor deposition is performed to obtain an amorphous CrSiCN coating; wherein, the vapor deposition adopts ion source-assisted deposition. This method can avoid the formation of crystalline CrSiCN with a columnar morphology, and the use of ion source-assisted deposition can further improve the compactness of the film layer, make the coating structure compact, and further improve the corrosion resistance, wear resistance and hardness of the coating. ; The obtained amorphous CrSiCN coating is applied to various electronic equipments, which can improve its wear resistance, anticorrosion resistance and hardness, thereby increasing its service life.

The invention discloses a pedestrian / luggage channel type radioisotope detection device, relates to the technical field of isotope detection devices, including a base, a motor is installed on one side of the base, and both sides at the middle position of the top of the base are rotatably connected with the first rotating shaft, and the output end of the motor is connected with a group of first rotating shafts. Both ends of the two sets of fixed frames in the present invention are interactively connected with sliding telescopic plates, the surfaces of the four sets of sliding telescopic plates are evenly equipped with multiple groups of scintillation detectors, the motor drives the first rotating shaft to rotate, the first rotating shaft, the second rotating shaft and A transmission belt is wound between the third rotating shafts at a specific angle, and then the second rotating shaft and the third rotating shaft drive the second gear and the third gear to engage and rotate the tooth grooves on the inner side of the bottom of the two sets of sliding telescopic plates respectively. The sliding telescopic plate can slide out from the inside of the fixed frame at the same time, and can detect and identify the radioactive isotope of pedestrians from multiple angles, and the identification range is relatively wide.

The invention provides an image sensor and a forming method thereof. The image sensor comprises a silicon-on-insulator (SOI) substrate, wherein the SOI substrate comprises a wafer back absorption layer, a bottom layer substrate, a buried oxide layer and a top layer substrate; the buried oxide layer is located at the upper part of the bottom layer substrate; the top layer substrate is located at the upper part of the buried oxide layer and comprises a pixel region and an absorption region; the absorption region is located on the periphery of the pixel region; the pixel region comprises a photoelectric diode PD and a transistor unit; an absorption structure is arranged in the absorption region and comprises polycrystal layers and covering layers; the covering layers ares located on the surfaces of the polycrystal layers; and the absorption layer is in a laminated structure which is formed by alternate arrangement of the polycrystal layers and the covering layers; the covering layers are used for inhibiting recrystallization of the polycrystal layers; and the absorption structure can effectively absorb metal impurities in the top layer substrate, reduces the dark current and improves the image quality.

The invention discloses a germanium-base substrate surface passivation method, which comprises the following steps of: cleaning a surface of a germanium-base substrate; putting the cleaned germanium-base substrate into a plasma cavity; utilizing reaction gas corresponding to multiply-bound atoms to generate a plasma; carrying out plasma bath processing on the surface of the germanium-base substrate; and applying a guiding electric field in a plasma bath processing process to guide the plasma to drift to the surface of the germanium-base substrate. Due to the processing, covalently joint of activated the multiply-bound atoms and germanium surface atoms is formed, but an interface layer containing germanium compounds is not generated, so that a surface dangling bond is passivated, the probability that the germanium surface atoms are separated from the surface of the germanium-base substrate to be dispersed is reduced, and simultaneously, the phenomenon that the thinning of the EOT is unfavorable as the interface layer is introduced is avoided. In addition, the guiding electric filed is applied, so that the formation of germanium oxides can be effectively suppressed, the passivation efficiency is improved, and the density of interfacial states is reduced.

The invention provides a tobacco planting method combining half-dry land bed seedling and transplanting. The tobacco planting method comprises the two processes of half-dry land bed seedling and warm-hole type transplanting, wherein the half-dry land bed seedling and warm-hole type transplanting comprises the steps of fertilizing, ridging, tobacco-hole excavating, open-water transplanting, drug-spraying around the root of the tobacco, in-time film mulching, trepanning and ventilating, seedling drawing out and small-size ridge plowing and film uncovering and large-size ridge plowing. The tobacco planting method has the advantages that the problem that the tobacco seedling is delicate and not strong during the transplanting process is solved, the survival rate of transplanting is improved, the seedling recovering period is shortened, and the seedling cost is reduced, and a warm small space for the grooving of the tobacco seedling is created, so that the influence of low temperature and drought is avoided; premature and fast-growing of the tobacco seedling are facilitated, early blossoming of the tobacco seedling is prevented, deep cultivating can be realized thoroughly, flourishing root system of a tobacco plant is promoted, the drought-enduring capability of the tobacco plant is strengthened, occurring of viral disease is reduced, labor concentrating problem during the tobacco seedling transplanting period is also relieved, and the transplanting time can be advanced according to the local tobacco production status. The tobacco planting method combining half-dry land bed seedling and transplanting is suitable for the tobacco cultivation such as the flue-cured tobacco, the burley tobacco and the sun-cured tobacco.

The invention relates to the technical field of uterine manipulators, in particular to a multifunctional uterine manipulator. The multifunctional uterine manipulator is structurally characterized in that a central guide rod is of a hollow core structure, and a perforation preventing device is arranged at the top end of the central guide rod; an anti-falling device is located in a groove formed inthe upper part of the central guide rod, a uterus lifting sleeve comprises a uterus lifting cup and a connecting sleeve, the uterus lifting cup is mounted below the anti-falling device on the centralguide rod through mounting holes, the connecting sleeve is connected onto the central guide rod in a sleeving manner and located below the uterus lifting cup, and a sealing device can fill a gap between the connecting sleeve and the vaginal wall after air inflation; and a holding device is fixed with the lower end of the connecting sleeve, the central guide rod penetrates through the holding device to extend downwards, and a transmission device is arranged on the central guide rod at the extending part. The uterine manipulator has the characteristics of sufficiently exposing parametrium, preventing perforation and vaginal bruises and reducing spreading probability of tumors in the abdominopelvic cavity.

The invention discloses a vomit extracting and cleaning device and belongs to the technical field of medical apparatus and instruments. The device comprises a main body, a disinfecting device and a collecting device; the main body comprises a mask, a hose, a sucking pump, an air outlet passage, a solid perfume groove, a receiving pipe, a control switch and a battery; the disinfecting device comprises a disinfecting chamber, a water pump, a sprayer; the collecting device comprises a liquid containing box and a test tube; the mask is clung to the mouth of a patient; the sucking pump works to help the patient discharge the vomit, and the vomit flows from the mask through the hose into the liquid containing box; a small amount of vomit flows to the test tube through the receiving pipe; the vomit in the test tube is used for testing; when the air discharged from the sucking pump passes through the air outlet passage, and the smell of the solid fragrance under the air outlet passage is mixedwith the exhaust air; the water pump is turned on by the control switch, and the disinfectant liquid is sprayed out through the water pump to disinfect the vomit.

The invention discloses a high-compression-resistance anti-deformation carton, and belongs to the field of carton waterproofing. The high-compression-resistance anti-deformation carton comprises six faces composed of a corrugated board, wherein the corrugated board comprises two flat paperboards; a wavy paperboard is connected between the two flat paperboards; a plurality of gaps which are distributed at intervals are formed between the flat paperboards and the wavy paperboard; a bidirectional inverted ball stick can be placed in a gap between each flat paperboard and the corresponding wavy paperboard; on one hand, when the carton is extruded, the bidirectional inverted ball sticks can play a supporting role in the carton; therefore, the compressive strength of the paperboard is improved,and further, the anti-compression and anti-deformation capabilities of the whole carton are improved; meanwhile, moisture absorption balls and water locking particles in the bidirectional inverted ball sticks can absorb and dry moisture in air in the gaps between the flat paperboards and the wavy paperboard, so that the carton is not prone to being affected with damp, the waterproofness of the carton is effectively improved, the overall stability of the carton is improved, and deformation is not prone to occurring.

The invention relates to the technical field of wireless charging module production, in particular to wireless charging module dispensing equipment which comprises a workbench, a pre-baking oven, a heat insulation assembly, a dispensing assembly, a fixing assembly, a limiting assembly, a material carrying assembly and a conveying assembly. Material carrying assemblies of different sizes can be made according to the size of an actually produced wireless charging module, the moving positions of the material carrying assemblies are limited through the limiting assembly, the conveying assembly can conveniently drive a material carrying plate to move directionally, the dispensing assembly is detachably arranged through cooperation of the dispensing assembly and the fixing assembly, and the dispensing efficiency is improved. The glue solution can be conveniently added in time after the glue solution is used up; through cooperation of the transmission assembly, the glue dispensing assembly and the heating assembly, glue can be directly pre-baked after glue dispensing of the wireless charging module, the probability that the glue diffuses to the outside of a welding spot is reduced, and therefore the glue dispensing height of the glue at the welding spot is increased, and the protection effect of the glue on the welding spot is improved.

The invention discloses a wild animal epidemic disease spread early warning device based on unmanned aerial vehicle monitoring, which belongs to the technical field of epidemic disease spread early warning devices, and includes a base, a host and an outer frame, and the host and the outer frame are fixedly connected to the base surface, and the outer frame is located on the left side of the host, and the outer frame is fixedly connected with a placement board, and the upper surface and the lower surface of the placement board are fixedly connected with multiple side panels, and the plurality of side panels divide the outer frame into Multiple cavities. In the present invention, by setting the storage box, and setting the paper tube and test paper in the storage box, when the test paper needs to be used, the test paper can be rolled up by twisting the handle to rotate the roller, and the other paper tube can release the test paper, so the unused test paper It can be pulled out, which greatly improves the safety performance. At the same time, by setting silicone gloves, the silicone gloves are beneficial for the staff to put their hands into the storage box for operation. Therefore, this solution has the function of epidemic detection and improves the early warning performance.