65results about How to "Ensure purity" patented technology

The present invention relates to a medical device (1, 100) comprising a first container (10, 110) holding a first medium and defining a general axis, a second container (20, 120) holding a second medium, and fluid connection means (50, 150) for establishing fluid connection between the first container (10, 110) and the second container (20, 120), the fluid connection means (50, 150) being arranged at least partially between the first container (10, 110) and the second container (20, 120). The device further comprises a cover receiving portion (42, 42) and a cover (4, 104) removably mounted thereon to shield at least an operable portion of the first container (10, 110). The cover (4, 104) is operatively coupled with the fluid connection means (50, 150) and configured to cause a relative converging motion between at least one of the first container (10, 110) and the fluid connection means (50, 150) and the second container (20, 120) and the fluid connection means (50, 150) in response to a dismounting of the cover (4, 104) from the cover receiving portion (42, 142).

Polycrystals with a MgO purity of at least 99.0%, a relative density of at least 90.0%, a sulfur S content of 0.01 to 50 ppm, a chlorine Cl content of 0.01 to 50 ppm, a nitrogen N content of 0.01 to 200 ppm, and a phosphorus P content of 0.01 to 30 ppm. Even when vapor deposition is conducted using electron beam deposition, almost no splash occurs, and the film characteristics of the product MgO film can also be improved.

An elastomer loudspeaker box system includes a loudspeaker box, a loudspeaker unit, a baffle and a bottom board. The loudspeaker box is made of elastomer material, and the tube wall of the loudspeaker box is bended to form a box body of corrugated tube shape, whereby the box body of the loudspeaker box is elastic and is retractable freely. The loudspeaker unit is mounted to the baffle. One end of the loudspeaker box is mounted to the baffle, and the other end is closed by the bottom board, whereby the loudspeaker unit, the loudspeaker box and the bottom board cooperatively form a closed box system. So, the loudspeaker unit and the retractable rock movement of box body of the loudspeaker box can produce resonance, and the elastic box body acts as sound radiator to radiate the low frequency, thereby extending the bass response towards low side, increasing the purity of sound, and improving the bass performance.

The invention discloses a preparation method for a high flux solvent-resisting organic/inorganic hybridized compound film doped with aminated graphene quantum dot, a prepared compound film and an application of the film. The preparation method for the compound film comprises the steps of interfacial polymerization reaction, chemical crosslinking and solvent activation. According to the invention, the aminated graphene quantum dot is added into an interfacial polymerization monomer solution, so that the separating property and solvent resistance of the film are obviously promoted; the film-making time is shortened in the manner of increasing the cross-linking and solvent activating time; a large quantity of amino groups are loaded on the surface of the aminated quantum dot and can react with an organic phase monomer so as to form a firm covalent bond, so that the performance of the film is promoted while the stability of the quantum dot in the film is obviously promoted. According to the invention, the preparation process is simple and the film has wide application prospect in the fields of organic solution system separation and organic solvent-containing water treatment.

The invention discloses a photovoltaic panel cleaning device. A first bracket and a second bracket are arranged side by side at the lower end of a supporting plate, and a sliding rail is arranged at the side end of the supporting plate; a limiting plate is arranged at the end of the sliding rail; a photovoltaic panel is arranged on the supporting plate; a water collecting groove is arranged at thelower end of the supporting plate, a first filtering screen is arranged in the water collecting groove, and the bottom of the water collecting groove is connected with a water tank through a first connecting pipe; the water tank is arranged on the first bracket, and a second connecting pipe is arranged on the lower part of the water tank; a second valve is arranged on the second connecting pipe;a liquid level sensor is arranged in the water tank; a connecting rod, a water pump and a controller are connected to the first bracket, and a rainwater sensor is arranged on the connecting rod; the water pump is connected with the water tank, and a first driving part is connected with a cleaning box body; and a cleaning brush is arranged at the lower end of the cleaning box body. According to thephotovoltaic panel cleaning device, by washing and brushing, the cleaning effect on the photovoltaic panel is significant, meanwhile, a water resource recovery part and a rainwater collection and replacement part are arranged, the purity of the water quality is ensured while water resources are effectively saved, and the cleaning effect of the photovoltaic panel is improved.

A battery structure includes a positive electrode layer, a solid electrolyte layer, and a negative electrode layer disposed in that order, wherein the solid electrolyte layer has a chemical composition, excluding incidental impurities, represented by the formula aLi·bX·cS·dY, where X is at least one element of phosphorus (P) and boron (B), Y is at least one element of oxygen (O) and nitrogen (N), the sum of a, b, c, and d is 1, a is 0.20 to 0.52, b is 0.10 to 0.20, c is 0.30 to 0.55, and d is 0 to 0.30. The solid electrolyte layer includes a portion A in contact with the negative electrode layer and a portion B in contact with the positive electrode layer, and d in the portion A is larger than d in the portion B. A lithium secondary battery includes the battery structure.

The invention relates to a kit and method for extracting a microbial genome DNA by a magnetic bead method. The kit comprises a microbial preservation buffer solution, a bacteriolytic agent solution I, proteinase K, silica gel magnetic beads, isopropanol and an ethanol water solution, and further comprises a bacteriolytic agent II, a lysis adsorption solution and a reinforced scrubbing solution. The bacteriolytic agent II comprises MES, EDTA, Triton X-100, lysozyme and a lysozyme enhancer. The lysis adsorption solution comprises Tris-HCl, sodium chloride, EDTA, TrionX-100 and a nucleic acid separation and absorption promoter; and the reinforced scrubbing solution comprises Tris-HCl, lithium chloride and ethanol. By adopting the kit provided by the invention, cell walls of gram-positive bacteria and various fungi can be completely destroyed to form protoplasts, DNA of the protoplast cells can be rapidly released under the action of the lysis adsorption solution, the DNA is efficiently adsorbed on the silica gel magnetic beads, and after the DNA is washed by the scrubbing solution and eluted by an elution solution, microbial DNA with high concentration and purity can be obtained.

The present invention relates to a process for separating isomers by simulated moving bed (SMB) adsorption, comprising separating the raw materials comprising isomers by SMB adsorption, said SMB comprising many adsorption beds each of which is equipped with grids, each of the grids being equipped with the feedstock inlet and outlet pipeline of the bed, the feedstock charged into and discharged from SMB at least comprising feedstocks, desorbent, extract, and raffinate, the extract being enriched with the target product, characterized in that the extract is used as a flushing liquid and respectively charged to first or second bed at the upstream of the feedstock charging position and to one of second to fourth beds at the downstream of the extract withdrawing position. Such process is used for separation of C₈ aromatic isomers by adsorption, and can improve the capacity of the device while effectively increasing the purity of the target product separated by adsorption.

The invention discloses a sensor, and particularly relates to a non-contact annular magnetoelectric rotary encoder. The encoder comprises an annular encoder main body I, and an acquisition head II which is arranged correspondingly to the annular encoder body I, wherein a clearance is formed between the annular encoder main body I and the acquisition head II, the annular encoder main body I comprises a bearing ring body, a magnetic ring stuck and sleeved on the upper edge part of the bearing body, and a protecting cover arranged outside the bearing ring body and the magnetic ring and playing a role of protecting the magnetic ring; and a magnetic induction chip is arranged in the acquisition head II. The magnetoelectric principle is adopted by the encoder; the defects of easiness in cracking of a code disc, high requirement on precision, complex mechanical structure, complex mounting and adjusting process and the like of the traditional photoelectric encoder are overcome; the generation, the receiving and the processing of a signal are realized by selecting and using a magnetoelectric integrated chip; the complex debugging process of the traditional photoelectric encoder is omitted; the production efficiency and the performance of products are greatly improved; and the non-contact annular magnetoelectric rotary encoder which is small in size, high in reliability, resistant in vibration, high in frequency response, low in cost, high in precision, low in error and long in service life is provided.

A continuous flow reactor, including a cylindrical coagulation crystallizer, a funnel type protective baffle for static settling, and a conical static settler. A lower end surface of the cylindrical coagulation crystallizer is connected with an upper end surface of the conical static settler, and the funnel type protective baffle for static settling is connected with an inner wall of the cylindrical coagulation crystallizer.

The invention discloses a special oxygen generator capable of purifying water and automatically adding water for medical treatment in the pneumology department. The oxygen generator comprises an oxygen generator bottom plate and a humidification bottle, casters are arranged at the bottom of the oxygen generator bottom plate, a transformer is arranged at the position, close to the front of a compressor, on the oxygen generator bottom plate, an installation frame is arranged on the left side of an oxygen storage bottle, an oxygen generator front baffle is arranged at the left end of the oxygen generator bottom plate, the humidification bottle is installed below a purifier, an oxygen generator upper cover is arranged at the upper end of the oxygen generator front baffle, and a control panel is embedded in the front surface of the oxygen generator upper cover. The purifier of the oxygen generator can remove impurities in water in the humidification bottle and ensure the pureness and freshness of the water in the humidification bottle so as to guarantee the use safety and health of a patient; a liquid level sensor of the oxygen generator can detect the amount of the water in the humidification bottle in real time to make it convenient to remind a user to add water in time, so that the use safety and health of the patient are ensured.

An in situ exploitation-separation-backfilling integration apparatus for natural gas hydrates is disclosed, consisting of a cyclonic inhalation device for coarse fraction, a jet flow device for sand discharge and a spiral cyclone device for fine fraction. The cyclonic inhalation device for coarse fraction is provided with a vortex trough and a cyclonic auxiliary flow channel; the jet flow device for sand discharge mainly consists of a sand discharge sliding sleeve, a sand discharge jet cylinder and a spring, wherein the sand discharge sliding sleeve can control the spraying out of hydraulic fluid and it is provided with a sand discharge butting head; inside the spiral cyclone device for fine fraction is a tapered structure and its upper portion is provided with a centering bracket.

The present invention relates to the field of biology, in particular to a sugar preparation method by using biomass sweet potato dregs for microbial fermentation as a sugar source. The liquid sugar product prepared with the method of the present invention essentially comprises the ingredient of glucose. The method of the present invention is of simple process, high specificity, good product quality and high yield, and solves the serious environmental pollution problem of the sweet potato dregs, thus having a good industrial application prospect.

The invention discloses a method for extracting polyphenol from passion fruit peel. The method comprises the following steps: freeze-drying and crushing the passion fruit peel; carrying out ultrasonic wave-ethanol assisted extraction in a solution 30-80% ethanol under an ultrasonic power of 200-400 W at a temperature of 30-70 DEG C for 5-35 min, filtering the obtained solution by a 0.45-0.80 [mu]m nylon filter, and concentrating the filtered solution; and separating and purifying the obtained concentrate by macro-porous resin with the particle size of 0.30-1.25 mm, and carrying out vacuum freeze drying to obtain powder of polyphenol in the passion fruit peel. The extraction method ensures the extraction rate and the purity of the polyphenol through combining ultrasonic wave-ethanol assisted extraction, macro-porous resin separation and purification and vacuum freeze drying technologies. The extraction rate of the polyphenol in the passion fruit peel can reach 33.95-50.35%. The extraction method is a new method for effectively utilizing the passion fruit peel, and can change wastes into valuables.

The present invention relates the field of mother and baby products, in particular to a breast pump and components thereof. The tee joint component is different from others in that the tee joint component is only provided with one negative pressure input interface; a milking shield and a milk outflow end disposed on the tee joint component are both integrated with the body of the tee joint component; the milk outflow end is a V-shaped one-way valve; the whole tee joint component is made of a flexible material. The cross-sectional thickness of both ends is greater than that of the middle region of the tee joint component. The flexible material is food-grade silicone rubber.

The invention belongs to the technical field of biomedicine, and in particular provides tumor vascular targeting peptide GX1. The invention utilizes a radioactive nuclide <99>Tc<m>O4 <-> to successfully mark GX1 by a direct method. Quality identification proves that <99>Tc<m>-GX1 has good radiochemical purity, specific activity and in vivo/vitro stability. In vitro microcosmic receptor autoradiography shows that the <99>Tc<m>-GX1 can combine with human umbilical vein endothelial cells and has good biological activity. In vitro microcosmic autoradiography, receptor radioligand conjoint analysis and competitive inhibition analysis confirm that the combination of the <99>Tc<m>-GX1 and tumor vascular endothelial cells has good specificity and affinity. ECT imaging and biological distribution prove that the <99>Tc<m>-GX1 has good targeting property to in vivo tumor tissue and specific distribution characteristicto tumor tissue. The <99>Tc<m>-GX1 has certain theoretical significance and great potential application value in diagnosis of gastric cancer, study on vascular targeting therapy, and other aspects.

The invention discloses a supported manganese-based medium-and-low-temperature denitration catalyst, and preparation and application thereof, belonging to the technical field of environment-friendly catalytic materials. The catalyst is prepared by adding a carrier titanium dioxide or aluminum oxide into a divalent manganese salt solution, then carrying out stirring, mixing and drying, adding potassium permanganate, and carrying out a solid-phase interface reaction. The denitration catalyst provided by the invention is used for a selective catalytic reduction denitration reaction; the catalysthas obviously-enhanced low-temperature (100-200 DEG C) or medium-and-low-temperature (200-300 DEG C) catalytic activity; the catalyst has excellent low-temperature denitration performance in the caseof a high loading amount, and a typical sample allows the conversion rate of NO in mixed gas to reach 98.7% at 100 DEG C and to reach 98.9% at 200 DEG C under the condition of an air speed of 30,000 ml/g.h; and the catalyst has excellent medium-temperature denitration performance in the case of a low loading amount, and a typical sample allows the conversion rate of NO in mixed gas to reach 99.0%at 200 DEG C and to reach 99.6% at 300 DEG C under the condition of an air speed of 60,000 ml/g.h. The denitration catalyst provided by the invention has a potential application value.

The invention provides a method for extracting total thioglycosides from Raphanus sativus seeds, which includes frying Raphanus sativus seeds, degreasing, extracting, and performing column separation to obtain the degreased total thioglycosides. The method has reasonable design, and is simple and practical; the extracted total thioglycosides has high purity.

A disclosed seed production method for cotton cytoplasmic male sterile line by utilizing insect hybridization is characterized by comprising: under the isolation condition, taking cotton cytoplasmic male sterilty male sterile line as a female parent, taking cotton restorer line as a male parent, planting the female parent and the male parent according a line number ratio of 1:4, and taking honeybee as pollination insect to perform cotton hybridization for seed production. According to the method, a box of honeybee can take the place of the pollination workload of one person, the seed production output at a normal year accounts for about 80% of the output of manual seed production, and thus labor is saved, labor intensity is reduced, seed production benefit is improved, and the purity and the quality of the hybridization seeds are guaranteed because of no selfing.

A display module has therein a heat dissipater, an installation frame, a LCD plate, an optical membrane, a diffusion plate and a light board respectively and sequentially received inside the installation frame, a first space defined between the LCD panel and the optical membrane. A heat dissipater has a first inlet, a first outlet both of which are defined in the installation frame and form a first airway inside the first space and a screen respectively provided to the first inlet and the first outlet. The formation of the airway facilitates air convection inside the display module, which helps dissipate heat generated from the operation of the display module.

The invention discloses a coal decomposition method and equipment in cycle heating gas style. The coal decomposition equipment can avoid introducing impurity, ensure a pure decomposed gas and keep continuous heating without extrinsic heat source, which includes an airtight kiln body with coal inlet and coal outlet; a facility for impelling and decomposing coal set in the kiln body; a coal decomposed gas collecting pipe set in one end of the airtight kiln body, and a high temperature gas input pipe set in the other end of the airtight kiln body; wherein the coal decomposed gas collecting pipe is connected with a post-processing facility and communicates with the high temperature gas input pipe through a circle pipe, and the circle pipe and/or the high temperature gas input pipe comprises a heating device.

The invention discloses a method for producing food-grade disodium hydrogen phosphate by using wet-process dilute phosphoric acid. The method comprises the steps as follows: (1) membrane filtration: placing wet-process dilute phosphoric acid in an acid-resistant container, and filtering the wet-process dilute phosphoric acid by membrane filtration equipment to obtain purified wet-process dilute phosphoric acid; (2) neutralization reaction and simultaneous defluorination and desulfurization: placing the dilute phosphoric acid in an acid-resistant container, adding a defluorination and desulfurization agent and a potassium hydroxide solution, and carrying out stirring to obtain a neutralization solution; (3) oxidative arsenic removal, slightly alkaline heavy metal removal and membrane filtration: carrying out stirring, adding an oxidizing agent, adjusting the pH value to slight alkalinity, and carrying out heating, cooling and membrane filtration to obtain alkaline heavy metal removal and oxidative arsenic removal solution; (4) pH regulation and concentration: adjusting the pH of the slightly alkaline heavy metal removal and oxidative arsenic removal solution to obtain a disodium hydrogen phosphate concentrated solution; (5) cooling crystallization: transferring the disodium hydrogen phosphate concentrated solution in equipment, decreasing the temperature, and continuing crystallization; and (6) crystallization and drying. The method is easy to implement, simple and convenient to operate, low in cost and high in purity, arsenic and heavy metal ions are fully removed, the solubility property is good and mechanization can be realized.

An electrolytic cell for aluminum electrolysis includes a cell body, in which an anode and a cathode are arranged inside the cell body, the cell body is filled with an electrolyte, and at least a part of the anode is immersed in the electrolyte; the anode is arranged above the cell body, the cathode is arranged at the bottom of the electrolytic cell and is covered by aluminum liquid, the electrolyte is located between the anode and the cathode and covers the aluminum liquid; and an insulating layer is arranged on the inner sidewall of the cell body for isolating oxygen or the electrolyte from a carbon block. The anode contains Fe and Cu as primary components; and the electrolyte is composed of 30-38 wt % of NaF, 49-60 wt % of AlF₃, 1-5 wt % of LiF, 1-6 wt % of KF and 3-6 wt % of Al₂O₃, and the molar ratio of NaF to AlF₃ is 1.0-1.52.

A functional module for a coolant circuit of a vehicle fuel cell system includes a container having an ion-exchange material and a pump device for the coolant fluidically coupled to each other in such a manner that a coolant inlet and a coolant outlet of the pump device are connected to a coolant outlet and a coolant inlet of the container. The container surrounds at least one region of the pump device that has a conveying unit of the pump device at least in certain areas around the outer circumference.

The invention discloses a multipurpose material storage device for laboratory, which comprises a plurality of containers used for containing experimental materials and a box body used for storing the containers, the box body comprises a lower box body and a box cover covering the lower box body in a sealed mode, an air inlet is formed in the lower box body, and a quick connector is arranged on the outer side of the air inlet. A quick coupling of the air inlet is communicated with a compressed air source through a pipeline, the container comprises a lower shell and an upper cover covering the lower shell in a sealing manner, a pressurizing port is formed in the upper cover, and controllable one-way valves which are positively conducted from outside to inside are respectively arranged at the air inlet and the pressurizing port. The compressed air source inputs compressed air into the box body, and high-pressure air in the box body enters the container through the pressurizing port, so that the air pressure in the container is increased, volatilization and tainting of odor of various experimental raw materials can be effectively inhibited, the quality precision and purity of various experimental materials are ensured, and the accuracy of experimental data is ensured.

A method for preparing the seeds of sterilized hybrid corn Yongyu No.2 includes such steps as preparing the male sterile Yong-31257 from the Yong-31257, preparing the restorer Yong-314-3 from the Yong-314-3, and hybridizing between them. It features that other corn can not be planted in the 500-m range around the seed-preparing field, the row ratio of female parent to male one is (4-6):1, and the female parent is sowed before the male one.