35results about How to "Avoid premixing" patented technology

The invention relates to a microfluidic chip, a manual centrifuging device and a nucleic acid detection method. The microfluidic chip comprises at least one sample adding layer and a channel layer arranged at the lower side of the sample adding layer, wherein the upper surface of the channel layer is provided with a plurality of test units which are in centered distribution and are used for loading a to-be-tested reagent and transmitting the to-be-tested reagent to a chamber; each test unit comprises at least two chambers which are interconnected through a channel; and a plurality of sample adding holes corresponding to the channel layer are arranged along the central circumference of the sample adding layer for injection of a reagent into one of the chambers of a corresponding test unit.The manual centrifuging device provided by the invention is a portable device which does not rely on an external power supply, integrates nucleic acid extraction, amplification and detection by utilizing a microfluidic chip technology, realizes rapid and convenient nucleic acid analysis, and is used for rapid response and field diagnosis of emergencies like large-scale infectious diseases, food safely affairs and environmental pollution accidents.

The invention discloses a storage-type precise quantitative oil-gas well down-hole work agent injection system and injection method. The injection system comprises an injection pipe and a ground pressurization device, the injection pipe is internally provided with one or more injection units, each injection unit comprises a volume-variable work agent storer, pressure is conducted on the volume-variable work agent storers by the ground pressurization device in the injection pipe, and the work agent is squeezed out. The invention discloses an injection method for using the storage-type accurate quantitative oil-gas well down-hole work agent injection system at the same time. The work agent is injected into a down-hole target location in a quantitative mode. According to the injection system, by means of the mode that the work agent can be quantitatively injected into the work agent storers in advance, the work agent can be injected accurately and quantitatively, and the injected volume accuracy of the work agent can be guaranteed. By means of the injection method, the work agent can be injected into the target location accurately and quantitatively, the accuracy of injected volume and the injection location is very good, and the best injection effect is guaranteed.

The invention provides a density gradient centrifugal tube with a position-adjustable porous diaphragm. The density gradient centrifugal tube comprises a centrifugal tube body, a centrifugal tube cover is arranged at the upper end of the centrifugal tube body, a diaphragm layer is arranged in the centrifugal tube body, an internal thread is formed in the inner wall of the centrifugal tube body, an external thread is formed in the outer wall of the diaphragm layer, the internal thread of the centrifugal tube body is matched with the external thread of the diaphragm layer, and multiple small pores are formed in the diaphragm layer. The centrifugal tube is divided into the portion for containing a separating solution and the portion for being added with a sample to be detected through the diaphragm layer, premixing of the sample and the separating solution is effectively avoided, sample pollution caused during centrifuging and sampling is reduced, and the quality of centrifugal separation is greatly improved; meanwhile, a diaphragm layer rotary knob can be made to adjust the diaphragm layer up and down according to differences of the types and volumes of samples to be treated, so that optimal separation solution volume exists at the lower end of the diaphragm layer, and the application range is widened.

The invention discloses a treatment method of waste lithium iron phosphate. The method comprises the following steps of: pretreating a waste lithium iron phosphate material, adding the pretreated material into a phosphoric acid solution, performing reacting and then filtering to obtain a first filtrate and a first filter residue; adding sulfide into the first filtrate for reaction, and then performing filtering to obtain a second filtrate and a second filter residue; adding iron powder into the second filtrate, performing stirring to react, removing iron, adding battery-grade lithium carbonateinto the obtained iron-removed material, and performing stirring to react until no bubbles are generated so as to obtain a reaction material; adding the reaction material into a water-soluble organiccarbon source, performing stirring, dispersing and dissolving, and performing spray drying on the obtained material in a spray dryer to obtain a dried material; and putting the dried material into aroller way furnace, performing calcining, crushing, mixing and screening, removing iron, and carrying out vacuum packaging. According to the method, resource utilization of the waste lithium iron phosphate can be achieved, high-end circulation is achieved, the recovery rate of all elements is high, the waste water generation amount is small, and the obtained lithium iron phosphate is excellent inperformance.

The invention provides equipment and method for quickly preparing a gel felt. The equipment for quickly preparing the gel felt comprises an outer cylinder, an inner cylinder rotationally arranged in the outer cylinder and provided with an inner cavity for an unfolded fiber felt to penetrate through the inner cylinder, and a driving device which is in transmission connection with the inner cylinder and used for driving the inner cylinder to rotate; the inner cylinder and the outer cylinder are arranged in a spaced mode to form an annular cavity; the two axial ends of the annular cavity are closed; an inlet allowing silica sol, a catalyst or catalytic sol to enter the annular cavity is formed in the outer cylinder; a plurality of communicating holes for communication between the inner cavity of the inner cylinder and the annular cavity are formed in the inner cylinder; and when the inner cylinder rotates, the silica sol, the catalyst or the catalytic sol entering the annular cavity enters the inner cavity of the inner cylinder through the communicating holes and is sprayed to the surfaces of the two sides of the fiber felt under the rotation action of the inner cylinder. The all-directional spraying effect can be achieved, so that it is guaranteed that the silica sol, the catalyst or the catalytic sol is fully and evenly immersed into the fiber felt, and the good heat preservation and heat insulation performance of the gel felt is guaranteed.

The invention provides a combined type container and a solute storage device, and the combined type container includes a bottle body, a bottle cap and at least one solute storage device arranged at the bottom of the bottle body. The bottle bottom and the uppermost solute storage device and the two neighboring solute storage devices are all connected by thread. The solute storage device contains a tubular main body and a transversal partition board arranged in the tubular main body, the transversal partition board divides the tubular main body into a lower concave cavity and an upper concave cavity used for storing the solute, the inner wall of the lower half of the tubular main body and the outer wall of the upper half all are provided with threads. The combined type container is used for preparing the solute and the solvent that need to be blended and used on the spot, which can not only avoid the phenomenon that the chemical materials are mixed in advance and get useless due to the chemical reaction, but also needs no calculation and weighing operation in the blending, so the preparing procedures are considerably simplified. The solute storage device is combined with the bottle body and the bottle cap by the thread at the bottom, which is beautiful in shape, simple and convenient in use and is convenient for being transported and carried.

The invention discloses an automatic cycling liquid adding system. The automatic cycling liquid adding system comprises a liquid storage tank, a heat exchanger, a circulating pump, a liquid consuming branch and a controller. The liquid inlet of the circulating pump communicates with the liquid outlet of the liquid storage tank, the liquid outlet of the circulating pump communicates with the inlet of the heat exchanger, and the outlet of the heat exchanger is connected with the circulating liquid inlet of the liquid storage tank through a pipeline. The liquid storage tank is provided with a temperature sensor A, a liquid level sensor and a liquid level switch. The liquid consuming branch is connected to the connection pipeline between the outlet of the heat exchanger and the circulating liquid inlet of the liquid storage tank. A temperature sensor B is arranged on a connection pipeline between the outlet of the heat exchanger and the liquid consuming branch. A temperature sensor C, a pressure sensor and a pressure adjusting valve are arranged on a connection pipeline between the liquid consuming branch and the circulating liquid inlet of the liquid storage tank. The automatic cycling liquid adding system is high in automation degree, and the product quality and the efficiency can be improved.

The invention provides a combined type multi-cavity container and a solute storage device, and the combined type multi-cavity container includes a bottle body, a bottle cap and at least one solute storage device arranged between the bottle cap and the bottle body. The bottle cap and the uppermost solute storage device, the two neighboring solute storage devices, the downmost solute storage device and the bottleneck of the bottle body are all connected by thread. The solute storage device contains a tubular main body and a transversal partition board arranged in the tubular main body, the transversal partition board divides the tubular main body into a lower concave cavity and an upper concave cavity used for storing the solute, the inner wall of the lower half of the tubular main body and the outer wall of the upper half all are provided with threads. The combined type multi-cavity container is used for preparing the solute and the solvent that need to be blended and used on the spot, which can not only avoid the phenomenon that the chemical materials are mixed in advance and get useless due to the chemical reaction, but also needs no calculation and weighing operation in the blending, so the preparing procedures are considerably simplified. The solute storage device is combined with the bottle body and the bottle cap by thread and the use is simple and convenient.

The invention relates to a high-temperature fuel cell, in particular to a methanol reformed gas generator for testing an electric pile of the high-temperature fuel cell. Comprising a hollow closed container, a partition plate is arranged in the container and divides the interior of the container into a left cavity and a right cavity which are not communicated with each other, the left cavity serves as a methanol gasification cavity, the right cavity serves as a methanol reforming cavity, and electric heating elements are arranged in the methanol gasification cavity and the methanol reforming cavity respectively. An electric heating element arranged on the methanol gasification cavity is used for heating the methanol gasification cavity, and an electric heating element arranged on the methanol reforming cavity is used for heating the methanol reforming cavity; a methanol inlet and an oxidant inlet are formed in the wall surface of the methanol gasification cavity, and a methanol reformed gas outlet is formed in the wall surface, far away from the methanol gasification cavity, of the methanol reforming cavity; a through hole is formed in the partition plate between the methanol gasification cavity and the methanol reforming cavity, and a mixed material of methanol and an oxidizing agent in the methanol gasification cavity enters the methanol reforming cavity through the through hole; and the methanol reforming cavity is filled with a methanol reforming catalyst.

The invention discloses a construction method of a novel composite marking line structure, which is used for making marking lines on the ground. The construction method comprises the following steps of: performing a cleaning step: sweeping and cleaning the ground on which marking lines are to be made; manufacturing a hot-melt pavement marking coating layer: coating the pavement with the hot-melt pavement marking coating to form the hot-melt pavement marking coating layer; performing a two-component marking coating mixing step: according to actual material requirements, putting two coatings ofthe two-component marking coating into a mixing container, and fully performing mixing to prepare the two-component marking coating; and performing a two-component marking coating layer manufacturingstep: coating the prepared two-component marking coating on the surface of the hot-melt pavement marking coating layer. The hot-melt pavement marking coating layer is used as the first layer, so thatthe marking flatness and the binding power with the asphalt concrete pavement can be effectively ensured. And the second layer is plated with the two-component marking coating layer, so that the excellent reflective property, friction resistance and corrosion resistance of the material can be effectively exerted.

An oral delivery system (ODS) is disclosed, the oral delivery system (ODS) comprising a first compartment (FCO) and a second compartment (SCO), said first compartment (FCO) comprising a first component (FC) comprising natural unbranched polysaccharide, said second compartment (SCO) comprising a second component (SC) comprising multivalent cations, wherein the oral delivery system (ODS) is adapted for administering the first and second components (FC, SC) in a synchronized manner to the oral cavity, whereby a bioadhesive gel is formed from said natural unbranched polysaccharide and said multivalent cationsin a cross-linking reaction.

The invention discloses a VC/Co toughening coating layer with a nanometer multilayer structure. The coating layer is formed by alternatively depositing VC layers and Co layers; adjacent one VC layer and one Co layer form one double-layer periodic layer; each double-layer periodical layer is 1-88 nm in thickness; the thickness ratio of the VC layer to the Co layer in each double-layer periodic layer is (1.0-3.0):1; and the total thickness of the double-layer periodic layer is 1-5 microns. The invention further discloses a preparation method for the VC/Co toughening coating layer with the nanometer multilayer structure; the method comprises the steps of respectively mounting VC targets and Co targets on medium-frequency cathodes, placing target surfaces perpendicular to a rotary working table, and adopting the magnetron sputtering method to deposit matrixes. At the same time of keeping higher hardness, the VC/Co toughening coating layer with the nanometer multilayer structure improves the toughness, so that the hardness and toughness requirements of protection coating layers and wear-resistant coating layers can be satisfied; and the preparation method has the advantages of strong operability, good controllability and easiness in industrial production.

The invention discloses a myocardial protection liquid perfusion method. A myocardial protection liquid perfusion device comprises a liquid storage chamber and an infusion chamber, wherein the liquidstorage chamber comprises a bag shell, an air bag, a bent pipeline and a filtering sieve plate; the air bag is arranged below the bag shell; the bent pipeline is arranged below the air bag; the filtering sieve plate is arranged below a liquid leakage hole of the bent pipeline; a first three-way switch is arranged at the lower end of the infusion chamber; the first three-way switch is connected with a blood drawing tube and a conveying tube; a second three-way switch is arranged at one side, far away from the liquid storage chamber and the infusion chamber, of the conveying tube; the other sideof the second three-way switch is connected with a blood outlet tube and an infusion tube; and the infusion tube can be connected with an upper needle head through a slot. The myocardial protection liquid perfusion device has the beneficial effects that a blood drawing and transfusion integrated function is realized by utilizing the first three-way switch and the second three-way switch; and a constant pressure system is formed by utilizing the air bag and an air chamber, so that heart damage is prevented, and myocardial protection liquid is delivered for assist.

The invention discloses a movable natural gas hydrate evaluation apparatus. The apparatus comprises a temperature field device, a natural gas injection pipeline, a natural gas outflow pipeline and a component water injection pipeline; the temperature field device comprises a temperature field tank and a refrigerating unit; an internal coil pipe is arranged in the temperature field tank; the temperature field tank is respectively connected with the refrigerating unit and an acquisition processor; the sidewall of the temperature field tank is provided with a visual window; the natural gas injection pipeline is connected with the internal coil pipe; the natural gas outflow pipeline is connected with the internal coil pipe; and the water injection pipeline is connected with the natural gas injection pipeline. The movable natural gas hydrate evaluation apparatus can be used to evaluate and research hydrate formation conditions and additives in the exploitation field of natural gas, and has the advantages of convenient transportation, convenient operation and strong applicability.