211results about How to "Facilitated ionization" patented technology

System for control of ion species behavior in a time-varying filter field of an ion mobility-based spectrometer to improve species identification for explosives detection.

The invention discloses a sewage purifier, which comprises polyhydroxyalkanoate, diatomite, humic acid, a bioactivator, inorganic metal salt and other substances. The invention also discloses a sewage purification method by utilizing the sewage purifier. A completely biodegradable material polyhydroxyalkanoate is used as a sustained material of the bioactivator, and the completely biodegradable material is slowly degraded and releases the bioactivator so as to realize the long-term high-efficiency purification function of the bioactivator; and by combining the effects of aquatic plants, phosphorus, nitrogen, polycyclic aromatic hydrocarbon and heavy metals in the sewage are purified and treated, so the sewage purifier has better sewage treatment effect.

A thruster (1) has a main chamber (6) defined within a tube (2). The tube has a longitudinal axis which defines an axis (4) of thrust; an injector (8) injects ionizable gas within the tube, at one end of the main chamber. An ionizer (124) is adapted to ionize the injected gas within the main chamber (6). A first magnetic field generator (12, 14) and an electromagnetic field generator (18) are adapted to generate a magnetized ponderomotive accelerating field downstream of said ionizer (124) along the direction of thrust on said axis (4), The thruster (1) ionizes the gas, and subsequently accelerates both electrons and ions by the magnetized ponderomotive force.

The invention discloses a method for preparing an environment-friendly natural fiber printing paste, comprising the following steps of: 1) selecting fine diatomaceous earth having a grain size less than or equal to 2 microns; 2) preparing raw printing paste, wherein the raw printing paste is composed of the following components in terms of weight: 6-13% organic printing paste material, 1-8% fine diatomaceous earth and 0.2-0.6% sodium hexametaphosphate, and rest being water; and 3) preparing the printing paste, wherein the printing paste is composed of the following components in terms of weight: 1-4% dye, 1-7% urea, 1-7% urea replacing agent, 1.5-2.5% sodium bicarbonate, 0.2-1% reserve salt S and 50% raw printing paste, and rest being water. The printing paste obtained through the method of the invention is capable of ensuring the printing quality and also capable of greatly reducing the content of organic matters in sewage discharged after printing, thereby reducing pollution.

System for control of ion species behavior in a time-varying filter field of an ion mobility-based spectrometer to improve species identification for explosives detection.

To form a film by ionized sputtering with good bottom coverage for holes with a high aspect ratio, and to simplify the structure inside and out of the sputter chamber, a target 2 is provided inside a sputter chamber 1 equipped with an exhaust system 11 and is sputtered by a sputtering power source 3. The released sputter particles are made to arrive at a substrate 50 to form a film. The sputtering power source 3 sends electric power of at least 5 W / cm2 to a target 2, and the sputter particles are ionized in a plasma formed by this electric power alone. A cylindrical shield 6 may be provided between the target 2 and the substrate holder 5 to restrict the plasma formation space, and an electric field establishment means 8 may set up an electric field for extracting the ionized sputter particles from the plasma P and directing them at the substrate 50.

The invention relates to a microwave plasma biomass gasification fixed-bed gasification furnace and a process, comprising a vertically arranged furnace body; a gasification furnace clearance zone is arranged at the upper part of the furnace body; a fixed bed is arranged at the lowest part of the furnace body; an raw material and fuel inlet, a product gas outlet and an oxygen / steam inlet are arranged on the furnace body; a slag notch is arranged at the bottom of the furnace body, and a synthesis gas monitoring unit is arranged at the position of the product gas outlet. The gasification furnace and the process are characterized in that: at least one microwave plasma generating device is arranged on the furnace body, the characteristics of high dispersion degree and high ionization of microwave plasma are adopted to achieve high-efficiency conversion of biomass fuel chemical energy in the furnace. The cold gas efficiency can be significantly higher than that of the conventional biomass gasification process and can reach more than 85%. Non-equilibrium cleavage reaction is carried out to tar and the like in synthesis gas, so that tar content is very low, direct industrialization utilization can be achieved, and the follow-up process is simple and reliable. No special requirements on the fuel particle size are demanded, simple breaking operation is only needed without complex processing, and the economy is good.

The invention discloses a pre-lithiation method for a lithium ion battery, and the method comprises the following steps: mixing lithium powder, a conductive agent and a polymer in a dry powder state at room temperature, adding a proper amount of lithium salt according to the condition, performing stirring to achieve the uniform pre-mixing, performing heating or adding an organic solvent, and finally performing stirring to obtain uniform multi-element mixed slurry; directly coating the surface of a negative plate of the lithium ion battery with the multi-element mixed slurry through different coating methods, and performing cooling or volatilizing a solvent to obtain a negative plate with a lithium-rich conductive coating on the surface layer; and finally, obtaining the lithium ion batteryby assembling the negative plate with the lithium-rich conductive coating on the surface layer. The pre-lithiation degree is controllable, the process is simple, the cost is low, the method is suitable for large-scale production, and meanwhile, the initial coulomb efficiency and the cycle stability of the lithium ion battery can be remarkably improved.

The invention relates to mass spectrometers with an ion source, comprising a UV laser system for mass spectrometric analyses with ionization of analyte molecules in a sample by matrix-assisted laser desorption, which, with very low energy losses, can produce a spatially distributed spot pattern with several intensity peaks of equal height, thus making it possible to achieve an optimum degree of ionization of analyte ions for any task. Such a spot pattern can be generated from the UV beam with high transverse coherence, using a combination of a lens array and a lens, provided that the lens array satisfies a mathematical condition for separation of the micro-lenses from each other (pitch) and their focal length. For example, a lens array with square or round lenses produces a pattern of nine and five spots, respectively. The lens arrays are inexpensive and do not require any lateral adjustment in this arrangement.

The invention relates to an ionization source in an analytic instrument, in particular to an ionization source and application thereof in an ion mobility spectrum. The ionization source comprises a direct-current power supply, a carrier gas, a positive discharge electrode, a negative discharge electrode and a current limit resistor, wherein the current limit resistor, the positive discharge electrode and the negative discharge electrode are connected in series with a positive electrode and a negative electrode of the direct-current power supply through leads to form a series circuit; and the discharge carrier gas is introduced between the positive discharge electrode and the negative discharge electrode under normal pressure. Glow discharge is used as the ionization source under atmospheric pressure, is used for the ion mobility spectrum, can avoid use of a radioactive ionization source, improve sensitivity of the ion mobility spectrum, and widen range of the ion mobility spectrum to measure a compound.

The discharge lamp of the invention includes a main discharge vessel which is filled with a discharge medium for the main discharge via a pair of opposed main discharge electrodes, and has a first electrode sealing part and a second electrode sealing part for connecting the pair of main discharge electrodes. The advantage of the invention is in a starting electrode arranged such that it does not come into contact with the main discharge space, and an auxiliary light source which includes an auxiliary discharge vessel located adjacent on the side of one of the electrode sealing parts and which is not made integral with the electrode sealing parts. The auxiliary light source is filled with a discharge medium, and has a first outer electrode on the outside of the auxiliary discharge vessel.

The invention discloses a deposition method of a low-stress corrosion-resistant multilayer diamond-like carbon (DLC) film. A vacuum cathode arc source deposition process and a plasma-reinforced chemical vapor deposition process are alternately adopted to alternately deposit hydrogen-free and hydrogen-containing DLC films. The method can deposit a micron-sized-thick multilayer DLC film, which has the advantages of high hardness, low stress, favorable bonding properties, favorable corrosion resistance and high stability, on the surface of a workpiece, thereby greatly prolonging the service time of the workpiece in a liquid medium environment.

A laser atom probe (100) situates a counter electrode between a specimen mount and a detector (106), and provides a laser (116) having its beam (122) aligned to illuminate the specimen (104) through the aperture (110) of the counter electrode (108). The detector, specimen mount (102), and / or the counter electrode may be charged to some boost voltage and then be pulsed to bring the specimen to ionization. The timing of the laser pulses may be used to determine ion departure and arrival times allowing determination of the mass-to-charge ratios of the ions, thus their identities. Automated alignment methods are described wherein the laser is automatically directed to areas of interest.

The present invention provides methods and compositions for carbohydrate encapsulated nanoparticle based mass spectrometry. For example, the present invention provides methods of screening samples for carbohydrate binding molecules, methods of characterizing carbohydrate binding epitopes in target molecules, and MALDI matrix compositions comprising carbohydrate encapsulated nanoparticles.

A laser atom probe (100) situates a counter electrode between a specimen mount and a detector (106), and provides a laser (116) having its beam (122) aligned to illuminate the specimen (104) through the aperture (110) of the counter electrode (108). The detector, specimen mount (102), and then be pulsed to bring the specimen to ionization. The timing of the laser pulses may be used to determine ion departure and arrival times allowing determination of the mass-to-charge ratios of the ions, thus their identities. Automated alignment methods are described wherein the laser is automatically directed to areas of interest.

The invention discloses a long-acting antibacterial agent, a long-acting antibacterial agent with an instant effect and a preparation method of the long-acting antibacterial agent, and relates to thetechnical field of coating antibacterial agents. The long-acting antibacterial agent mainly comprises nano silver, carrier particles and hydrophilic polymers / a mixture of hydrophilic polymers and hydrophilic inorganic matters, and the long-acting antibacterial agent with the instant effect comprises nano silver, silver salts, other metal salts, carrier particles, hydrophilic polymers / a mixture ofhydrophilic polymers and hydrophilic inorganic matters and a cross-linking agent. By the invention, the problems that a coating film prepared by an existing antibacterial agent is not washable and poor in long-acting property, yellowing of antibacterial active component Ag ions is easily caused, an organic antibacterial agent is harmful to human bodies, pollutes the environment and the like are solved. In addition, hydrophilic polymers or a mixture of the hydrophilic polymers and hydrophilic oligomers or inorganic matters wrap the surface of the antibacterial agent, the releasing speed of silver ions is controlled, and silver simple substances can be promoted to ionize silver ions to resist bacteria.

The invention discloses a general-purpose nanochip for mass spectrometry, and relates to the technical field of mass spectrometry. The host material of the nanochip is silicon-based semiconductor material, array spotted holes are distributed at the surface of the host material, the inner surfaces of the spotted holes are nanostructures; the surface of the host material has regional hydrophobic modification, the internal portions of the array spotted holes are hydrophilic zones, and the outer portions of the array spotted holes are hydrophobic zones; or the internal portions of the array spotted holes are hydrophobic zones, and the outer portions of the array spotted holes are hydrophilic zones. The present invention further discloses a preparation method and a clinical application of the nanochip. The nanostructures can be used to extract the molecules at the surface of the sample of the biological tissue sample to be tested to improve the laser energy absorption and utilization so asto improve the ionization efficiency and enhance the mass spectrometry signals. The general-purpose nanochip can be widely applied to the field of clinical testing.

The invention discloses an anode magnetic screen integrated structure for a Hall thruster. The structure is composed of an outer ceramic cylinder, an inner ceramic cylinder, an anode, a magnetic conductive part, insulation ceramics, an insulation cap, a conductive column and a magnetic source; holes are evenly formed in the outer circle, with the largest maximum, of the anode, the anode has the gas homogenization effect, through the anode, the magnetically soft alloy material is adopted to achieve the magnetic conductive function, the magnet exciting coil manner is adopted in the magnetic source, the permanent magnet manner is adopted, the outer ceramic cylinder and the inner ceramic cylinder are arranged in an anode cavity, and therefore building of an insulation acceleration channel of the Hall thruster is achieved; during work, the anode with the high potential is isolated from other parts with different potentials through the insulation ceramics and the insulation cap; the anode is connected with other components through the conductive column, the anode is connected with the conductive column through the electron beam welding manner, the Hall thruster with the small size can achieve the focusing magnetic field type, and the type is the magnetic field type structure generally obtained by the high-performance Hall thruster.

The invention provides an electrochemical energy storage device. The electrochemical energy storage device comprises a battery core, an electrolyte and a package shell and also comprises a glue material, wherein the glue material is arranged between the battery core and the package shell and comprises a viscous layer and a protection layer, the viscous layer is directly or indirectly pasted on the outer surface of the battery core, one surface, far away from the battery core, of the viscous layer is an adhesive surface, the protection layer is arranged on the adhesive surface of the viscous layer and is completely or partially dissolved or swelled and dispersed in the electrolyte so that the adhesive surface of the viscous layer is exposed and the battery core and the package shell are bonded by the viscous layer, the protection layer is a polar molecule, and the polar molecule comprises one or more of -F, -CO-NH-, -NH-CO-NH- and -NH-CO-O-. By the electrochemical energy storage device, the battery core and the package shell can be fixedly connected, the various problems during the drop test process are solved, the problem that the battery core is difficult to enter the shell due to viscosity of the two surfaces of the glue material also can be prevented, and meanwhile, the electrochemical energy storage device has high cycle performance and high-rate charging-discharging performance.

A system for separating oxygen from air operates at a pressure less than atmospheric. The oxygen separation system includes an entry port for ambient air, and at least two separate exhaust ports through which separate exhaust streams are drawn by separate suction sources. The oxygen separation system further includes a low-energy ionization portion that favors creation of molecular oxygen ions, and a higher-energy portion disposed between the ionization portion and one of the exhaust ports. A plurality of gas-permeable electrodes are charged to different voltages to provide the different portions inside the separator. An exhaust stream taken from the anode side of the separator is enriched in oxygen relative to ambient air.

The invention belongs to the technical field of material processing, which relates to a laser-electric arc composite welding method. The method comprises the following steps: installing an extra electrode in the position with the distance of 4 to 100 mm higher from the surface of a work piece to be welded in the direction vertical to the laser beam; forming a hole in the center of the extra electrode for passing the laser beam; and respectively connecting the extra electrode and the work piece to be welded to both ends of a DC stabilized voltage supply with the output voltage between 1 and 220 V at the electric field intensity between 1 and 220 V / cm. When the laser power is between 300 W and 500 W, the electric arc current is between 100 A and 300 A, and the electric arc current is between 20 V and 35 V, the optimum range of the extra electric field intensity is between 30 V / cm and 60 V / cm. The invention can fully utilize the energy of the laser and the electric arc, and can realize the effect of obtaining large composite hot source welding fusion depth under the condition of lower laser output power. Compared with the existing laser-electric arc composite welding method under the same process condition, the invention has the advantage that the fusion depth is increased by 15 percent to 40 percent.

The invention discloses flaky iron phosphate, and a preparation method and application thereof. The microscopic morphology of the flaky iron phosphate is a primary particle in a sheet shape with a thickness of 10 to 50 nm, a length of 100 nm to 3 [mu]m and a width of 100 nm to 3 [mu]m. The preparation method comprises the following steps of: weighing a ferrous ion solution and adding phosphoric acid and a crystal modifier; weighing a phosphorus salt solution and adding an oxidizing agent; carrying out mixing to obtain a mixed solution C, controlling the pH value of the mixed solution C to be 1.5-2.2, and carrying out a reaction to obtain pale yellow iron phosphate slurry; converting the iron phosphate slurry into white or pink-white iron phosphate slurry containing crystal forms under theconditions of stirring and heating, reducing a stirring speed by 20%-50% after the completion of the conversion, and carrying out ageing and heat preservation; performing solid-liquid separation, andcollecting a solid portion to obtain a crystalline iron phosphate precipitate; and washing the precipitate and then performing calcination to obtain the flaky iron phosphate. The iron phosphate of theinvention can be used for preparing lithium iron phosphate with high compaction density.

The invention belongs to the technical field of preparation of hexagonal boron nitride (h-BN) and a hybrid structure thereof, and particularly relates to a method for preparing h-BN and the hybrid structure thereof through plasma enhanced chemical vapor deposition (PECVD). Copper foil serves as a substrate, solid borane ammonia complex serves as a boron source and a nitrogen source, and the hybrid structure of the h-BN is prepared through PECVD. The method includes the specific steps that the substrate and the borane ammonia complex are arranged in a quartz boat and then put into a PEVCD system to be vacuumized; a reaction furnace is heated to a corresponding temperature, gas is introduced to the reaction furnace, and then the substrate is moved to the center of the furnace; the system pressure is adjusted, and heat treatment is carried out; the h-BN and the hybrid structure thereof are grown; and the h-BN and the hybrid structure thereof are cooled to the room temperature. The method for preparing the h-BN and the hybrid structure thereof through PECVD is simple in process, easy and convenient to operate, high in controllability and capable of achieving continuous regulation of the band gap of the h-BN and the hybrid structure thereof.

A laser atom probe (100) situates a counter electrode between a specimen mount and a detector (106), and provides a laser (116) having its beam (122) aligned to illuminate the specimen (104) through the aperture (110) of the counter electrode (108). The detector, specimen mount (102), and / or the counter electrode may be charged to some boost voltage and then be pulsed to bring the specimen to ionization. The timing of the laser pulses may be used to determine ion departure and arrival times allowing determination of the mass-to-charge ratios of the ions, thus their identities. Automated alignment methods are described wherein the laser is automatically directed to areas of interest.

An electric deionization device capable of sufficiently removing weak electrolyte components and producing processed desalting chamber having rectangular-parallelepiped frame 20, a compartment member 21 disposed in the frame 20 and, desirably, having conductivity, an ion exchange resin 23 filled in small chambes 22 formed by the compartment member 21, and an anion exchange membrane 24 and a cation exchange membrane 25 disposed so as to hold the frame 20. The compartment member 21 is formed in a hexagonal honeycomb shape. The ion exchange membrane 23 is the mixture of an anion exchange resin with a cation exchange resin, and its mixing ratio on the upstream side is different from that on the downstream side.

The invention discloses a thruster structure for deeply integrating a hollow cathode into an anode layer hall thruster. In the structure, the core part of the cathode is combined to the inner ring wall surface of the anode layer hall thruster, and the anode plays the role of an original cathode contact electrode. The thruster structure is used for replacing the combination of an original hall thruster and the hollow cathode, so that total mass of an electric propulsion system can be greatly reduced, and the payload is improved.

The invention provides a combined ionization source based on a vacuum ultraviolet lamp and discharge ionization, and particularly relates to that plasma generated by the discharge ionization is guided into the position under the vacuum ultraviolet lamp through a capillary tube, and molecular ionization is conducted on the sample under the radiation of the ultraviolet lamp. The combined ionization source based on the ultraviolet lamp and the discharge ionization comprises the capillary tube, a discharging cavity, the vacuum ultraviolet lamp, an ion transmission area, a cavity body and an ion mass analyzer. The combined ionization source based on the ultraviolet lamp and the discharge ionization has the advantages that the plasma generated by the discharge ionization is guided into an ionization area through the capillary tube, and formed metastable atoms and ions can conduct molecular ionization on the sample in the ionization area; meanwhile, the air pressure in a discharge area is controlled by adjusting the length of the capillary tube. The combined ionization source based on the ultraviolet lamp and the discharge ionization has the advantages of being high in ionization efficiency and low in energy consumption.

An etching solution includes an anticorrosive for copper or a benzotriazole based anticorrosive in a hydrofluoric acid aqueous solution. An etching method makes use of the etching solution set out above. Moreover, a method for manufacturing a semiconductor device which should include the step of removing copper by the etching method. The method includes the steps of forming copper through a barrier layer made of a metal or metal compound, which is greater in ionization tendency than copper, so as to bury a wiring groove formed in an insulating film with the copper, followed by polishing additional copper and barrier layer formed on the insulating film, and etching a surface layer of the insulating film by use of the etching solution to remove an insulating defective layer made mainly of the barrier layer on the insulating film along with the surface layer of the insulating film.