140results about How to "Improve the ionization effect" patented technology

Contaminant particles travelling with a projection beam in a lithographic projection apparatus are ionized. A purge gas may be attracted towards getter plates provided upstream of the purge gas supply. A magnetic field traps electrons generated by the ionizer to improve the ionization of the purge gas. The contaminant particles can be ionized by generating a plasma in a tube having a greater length than width.

The invention discloses a gas distributor/anode integrated structure for a Hall thruster and belongs to the field of Hall thrusters. The gas distributor/anode integrated structure aims to solve the problems of expansion of an air outlet of a gas distributor of a Hall thruster and non-uniform distribution of neutral gas near an anode. The gas distributor/anode integrated structure comprises an anode and a gas distributor, wherein the gas distributor is a two-stage buffer chamber, and the lower end face of a secondary-stage buffer chamber body and the upper end face of a primary-stage buffer chamber body are coaxially fixed together through laser welding; multiple radial air outlets are evenly formed in the peripheral direction of the excircle side wall of the secondary-stage buffer chamber body, and the radial air outlets are flush with the radial center of a discharging channel of the Hall thruster; an air outlet baffle is arranged on a radial extension annular face of the upper end face of the secondary-stage buffer chamber body; the anode is an annular structure arranged on the upper end face of the primary-stage buffer chamber body, and the anode and the primary-stage buffer chamber body are of an integral part structure; the middle of the round side wall of the anode is of a hollowed-out structure, and the peripheral hollowed-out angle exceeds half of the whole periphery; the top of the anode is arranged within the zero magnetic field of the Hall thruster.

The invention relates to the technical field of preparation of films and coatings, particularly to a compact and efficient cold cathode arc source of a quasi diffusion arc. The cold cathode arc source is composed of an arc source head and a control magnetic field group, wherein the arc source head comprises a target, a target base, a target base shielding cover, a target base plate, an arc striking device and a permanent magnet device; the control magnetic field group comprises a flange sleeve, a flange sleeve insulating bush, a dipolar radial rotating magnetic filed generating device, an axial focusing guiding magnetic field generating device, a coaxial focusing magnetic field magnetic yoke and a flange sleeve shielding cover; and the arc source head is connected with the bottom of the flange sleeve through the target base plate to form a whole arc source structure, and connected with a finance through a flange arranged in front of the flange sleeve. Arc spots are distributed on the whole target surface under the comprehensive action of a certain magnetic field intensity and rotary frequency, the power density of the arc spots is reduced, the quasi diffusion arc state is achieved, launch of large grains is reduced, simultaneously, purified high-density plasmas are extracted through the axial focusing guiding magnetic field, and the transmission efficiency is improved.

The invention discloses a high performance liquid chromatography tandem mass spectrometry detection method of 25-hydroxy vitamin D in serum. The method comprises the following steps that (1) a sampleis pre-treated, specifically, an internal standard working solution and a sodium hydroxide solution are sequentially added into a serum sample and mixed to be uniform; (2) solid-liquid extraction treatment is conducted, specifically, the sample treated in the step (1) is loaded to an SLE 96 pore plate, and eluted with normal hexane, and then the eluant is blown to be dried by using nitrogen; (3) aderivatization reaction is conducted, a derivatization reagent 4-phenyl-1,2,4-triazoline-3,5-diketone (PTAD) solution is added to redissolve, a thermostatic reaction is conducted, then ethyl alcoholis added to terminate the reaction, and the product is blown to be dried by using nitrogen; and (4) redissolution is conducted, and analytical detection is conducted by adopting the high performance liquid chromatography tandem mass spectrometry based on a multiplexing system (MPX). The high performance liquid chromatography tandem mass spectrometry detection method is high in detection sensitivity, high in specificity and low in cost, meanwhile, the pre-treatment time and analysis time of the sample are effectively shortened, and the detection efficiency of the sample is improved.

The air purifier with electrostatically flocked fiber includes an ionizing part for high voltage discharging and a dust collecting part to collect the foreign matter ionized in the ionizing part and has electrostatically flocked fiber set in the ionizing part or the dust collecting part. The electrostatically flocked fiber filters out the foreign matter by means of physical contact, and the ionized foreign matter is further filtered out through electrostatic force filtering to raise the air purifying performance. The air purifying mode may be applied widely in common air purifier and various kinds of air conditioners.

The invention discloses a method for simultaneous determination of organic acids and flavone components in polygonum viviparum, wherein the method comprises the following steps: (1) preparing a test sample solution; (2) detecting with LC-MS/MS; and (3) carrying out component qualitative analysis. On the basis of qualitative analysis of the components of the polygonum viviparum, a reference substance solution is prepared, and the contents of chlorogenic acid and gallic acid in the polygonum viviparum are also determined. 10 kinds of substances in the two active components of the organic acids and the flavones in the polygonum viviparum are determined at the same time for the first time, and a quality control method of the polygonum viviparum medicinal material is improved. The LC-MS/MS analysis detection method is adopted to be combined with a multi-wavelength switching procedure, and the method has the advantages of being simple, stable, fast, high in efficiency, high in sensitivity, good in repeatability and low in interference, can complete the detection of 10 kinds of substances within 1 h, and obtains a chromatogram which can contain multiple pieces of wavelength information at the same time.

The invention discloses a curved magnetron sputtering cathode, closed magnetic field coating magnetron sputtering equipment and application methods thereof. The curved magnetron sputtering cathode comprises a curved target material, a water jacket, an electrode, an insulating bush, a shielding component, a magnetic boot, a magnetic boot rotating component and a supporting and fixing mechanism, wherein the insulating bush performs potential insulation on a cathode component; the shielding component is a suspended potential component in a discharge process; and the magnetic boot rotating component can realize sliding of the magnetic boot. The utilization ratio of the magnetic material is improved; the curved target material is formed by splicing a plurality of metal-based tiles, of which thesurfaces can be bonded with nonmetals, and is fixed on the water jacket which is formed by welding the surface of a stainless steel tube with a water-cooled tube; the electrode is connected with a negative voltage to perform magnetron sputtering glow discharge; and limited by the shape of the cathode, electrons in glow discharge are gathered to produce a hollow cathode effect, so that not only the sputtering rate but also the particle ionization rate is improved. The curved magnetron sputtering cathode can perform magnetron sputtering in a high-vacuum state to generate big-beam high-ionization-rate particles so as to obtain a high-quality coating.

The invention discloses a preparation method of polylactone and belongs to the technical field of organocatalysis and high polymer materials. By the use of a catalyst (gamma-resorcylic acid) which is natural and safe, is not sensitive to the environment, is commercially available and is cheap and has an ideal catalytic effect, polyvalerolactone and polycaprolactone are prepared at 0-200 DEG C in the presence or in the absence of a solvent, so as to obtain a high polymer biodegradable material having large molecular weight and narrow dispersity and containing no metal impurities. Thus, defects of a catalyst commonly used in industry in aspects of safety, price, sensitivity to the environment and catalytic effect are overcome, and a simple, mild, effective and cheap polymerization method is provided. A high polymer material prepared by the method can be applied in fields of drug carrier, nanoreactor, film, material interface and the like, has biodegradability and is an environmentally-friendly material.

The invention discloses an ionizing transducer with detection function, and a detection method thereof for nitrotoluene. The ionizing transducer comprises an aluminum plate electrode plate and nanometer carbon-tube electrode plate; the aluminum electrode plate and the left end and right end of the nanometer carbon-tube are mutually isolated through a left insulating support plate and a right insulating support plate, and the height of the left end insulating support plate is greater than that of the right end insulating support plate; a back baffle plate and a front baffle plate are arranged at the front side and the back side of the aluminum plate electrode plate and the nanometer carbon-tube electrode plate; heating resistance wires are arranged at the inner side of the left end insulating support plate or the inner side of the front side plate and the back side plate; the left end insulating support plate, the right end insulating support plate, the back baffle plate, the front baffle plate, the aluminum plate electrode plate and the nanometer carbon-tube electrode plate are surrounded as a closed chamber, a to-be-detected gas inlet is formed on the back baffle plate, and a to-be-detected gas outlet is arranged on the front baffle plate. Through the sensor disclosed by the invention, the concentration of the detected gas can be accurately detected, and the gas can be ionizedas the plasma, thereby providing the plasma permanently ionized by the detected gas for the component precise detection in the next step.

The invention discloses a self-checking power distribution cabinet, and solves problems that whether an ion grounding electrode connected with a power distribution cabinet is intact or not cannot be known and the ionization capacity of the ion grounding electrode cannot be improved. According to the technical scheme, the output end of an electric leakage analog circuit is connected with the ion grounding electrode to output analog current; a detection and comparison circuit is used for detecting voltage between the output end of the electric leakage analog circuit and the ion grounding electrode; a control circuit is coupled with the detection and comparison circuit to receive a detection signal and to output the control signal; a warning circuit is coupled with the control circuit to receive a control signal, and to respond the control signal to realize warning; a compensation circuit is coupled with the control circuit, and is controlled by the control circuit to heat the ion grounding electrode. According to the self-checking power distribution cabinet, the ion grounding electrode is detected through real-time detection, if the ion grounding electrode is damaged, an operator is reminded of maintenance through warning; meanwhile, the ionization efficiency of the ion grounding electrode is improved through the compensation circuit.

The invention relates to the technical field of power system capacitors and particularly relates to a cooling and heat radiation structure of a capacitor, which comprises a cooling mechanism, a heat radiation mechanism and multiple parallel capacitor elements, wherein the capacitor element is coated with a layer of insulating paper; the cooling mechanism comprises a water tank and a water pipe; one side of the water tank is communicated with the water pipe, and the other side of the water tank is provided with a sliding piston; the water pipe is wound on the capacitor element coated by the insulating paper; the heat radiation mechanism comprises a power supply, a fan, a paper plate and a paper plate groove; the paper plate, the fan and the power supply are connected by wires; the fan is fixedly connected with a rotating shaft; the rotating shaft is connected with a speed reduction gear set through an input shaft; the output shaft of the speed reduction gear set is connected with a threaded rod; the threaded rod is connected with a casing; and the casing is fixedly connected onto the piston. The capacitor is cooled by using the water pipe to be wound on the capacitor and water to flow in the water pipe, the fan is also rotated, and the cooling and heat radiation effects of the capacitor are further enhanced.

The invention discloses a opposite-target non-equilibrium magnetron spattering system with magnetic mirror field restriction, which is mainly used in technique field of surfacial project. It is characterized in that: Two electrified coaxial coils are set opposite two permanent-magnet magnetron targets. They can form a complete closed magnetic mirror field which is coaxial with magnetron targets. To control magnetic mirror field based on regulating current in coils, and adjust state, deposit parameter of discharging plasma subtly. Magnetic coils enhance cathode discharging, increase plasma derivation in cathode zone and advance plasma density in deposit zone. Applying coaxial magnetic mirror field to restrain plasma with adding coaxial coils can enlarge adjusting range of deposit parameter. Compared with routine magnetron spattering technique, non-equilibrium magnetron spattering technique has adjustable plasma state, high plasma leaving rate and high ion-atom arrival rate etc.

The invention belongs to the technical field of liquid mixing devices, and discloses an environment-friendly crop deinsectization, sterilization and supplementary fertilizer liquid preparation device. The environment-friendly crop deinsectization, sterilization and supplementary fertilizer liquid preparation device is characterized in that a mixing water tank and a spraying mechanism communicated with the mixing water tank are included; an air oxygen generator is arranged at the outer side of the mixing water tank, an oxygen outlet of the air oxygen generator is connected with an ozone generator, the ozone generator is communicated with the mixing water tank through a first gas-liquid mixing pump, an exhaust gas outlet of the air oxygen generator is connected with equipment for converting nitrogen into nitrogen fertilizer, and the equipment for converting the nitrogen into the nitrogen fertilizer is connected with the mixing water tank through a second gas-liquid mixing pump. According to the environment-friendly crop deinsectization, sterilization and supplementary fertilizer liquid preparation device, the nitrogen with the very high purity is generated while oxygen is made by air through the air oxygen generator, ozone is made by the oxygen through the ozone generator, ozone water is generated, and deinsectization and sterilization can be achieved by spraying the ozone water on plants; the nitrogen can generate ionic-state nitrogen through the equipment for converting the nitrogen into the nitrogen fertilizer, therefore, the nitrogen fertilizer supply to crops is improved, and the crop yield is greatly improved.

The invention discloses an ultrasonic atomization ionization apparatus. The ultrasonic atomization ionization apparatus comprises an atomization cavity, a sample cup, an atomization sheet, a capillary tube, a heating apparatus and a carrier gas conveying pipe, wherein a liquid medium is stored in the atomization cavity; the sample cup is put in the liquid medium in the atomization cavity; a to-be-atomized ionization liquid sample is stored in the sample cup; the heating apparatus is used for heating the to-be-atomized ionization liquid sample in the sample cup; the ultrasonic vibration generated by the atomization sheet propagates to the to-be-atomized ionization liquid sample in the sample cup through the liquid medium; a mist gathering outlet is formed in the atomization cavity; the capillary tube passes through the atomization cavity and extends out of the mist gathering outlet; an electrified solution passes through the interior of the capillary tube, and electrified mist spray is formed outside the mist gathering outlet; the carrier gas conveyed by the carrier gas conveying pipe wafts the atomized liquid sample to enable the atomized liquid sample to be sprayed out of the mist gathering outlet and to be jointed with the electrified mist spray conveyed from the capillary tube to finally form sample ions. By adoption of the ultrasonic atomization ionization apparatus, the problem of low ionization efficiency of the liquid samples difficult to volatilize is solved, and the sample treating process is simplified.

Peptides can be derivatised such that, when ionised and analysed by mass spectrometry, those containing arginine residues give characteristic peak patterns. Peaks corresponding to arginine-containing peptides can therefore be selected from a mass spectrum in order to simplify and improve peptide analysis. Suitable labels give derivatised peptides that have the ability to form both a stabilised ion species ([P]+) and a protonated ion molecular species ([P+H]+) that differ by one average mass unit. A characteristic peak pattern is seen.

A composite nanoparticle is prepared from SiO2 nanoparticle, organic olefin monomer, the olefin monomer containing carboxyl function group, and coupling agent through polymerizing in the emulsion or suspension using water as medium. Its advantage is high chemical reaction activity and ionizing power.

The invention discloses a laser-assisted glow discharge ionization device which comprises a laser light source, a mass spectrometer, a closed ionization cavity and an ionization body. The ionization body comprises a copper column fixing base which contains a hollow copper column and a sample fixing base which contains a sample, the hollow copper column is connected to the ground potential through a wire and an ionization cavity bottom plate, and the sample is connected with a glow discharging power supply. The copper column fixing base and the sample fixing base are arranged oppositely, a laser hole is formed in the side, opposite to the sample, of the hollow copper column, and an ionization area is formed in the laser hole. Lasers emitted from the laser light source penetrate through the hollow copper column and then vertically radiate to the sample. A repeller plate which is used for feeding ions in the ionization area into the mass spectrometer is arranged on one side of the ionization area, and the repeller plate is connected with a DC high-voltage power supply. According to the laser-assisted glow discharge ionization device, glow discharge voltage signals and the ground potential are introduced through the structure, DC high voltages are introduced through the repeller plate to introduce ions generated by discharging into the mass spectrometer, the ion transmission efficiency is improved, and the detecting sensitivity is high.

The invention discloses a method for measuring the concentration of molecular targeted drugs in plasma by using ultra-high performance liquid chromatography tandem mass spectrometry. The method comprises the following steps of respectively dissolving anlotinib, ceritinib and ibrutinib by adopting acetonitrile in order to prepare a standard curve working solution, and dissolving diazepam by adopting methanol in order to prepare an internal standard substance working solution; respectively adding 0-5 microliters of standard curve working solution into blank plasma to make up to 50 microliters, carrying out vortex to prepare a standard curve plasma sample, adding the internal standard substance working solution, carrying out vortex and centrifugation, taking supernate, carrying out UPLC-MS/MSquantitative analysis, and drawing a standard curve; and precisely sucking to-be-detected plasma with the concentration of 50 microliters, adopting the same sample pretreatment method, and measuringthe concentration of the anlotinib, the ceritinib and the ibrutinib according to a standard curve of the batch. According to the method, the blood concentration of various anti-tumor molecular targeted drugs can be measured simultaneously, the method is high in sensitivity, strong in specificity, rapid and good in reproducibility and is suitable for clinical high-throughput simultaneous detectionand monitoring of various anti-tumor molecular targeted drugs.

The invention discloses a pneumoelectric coupling ion focusing device. According to the pneumoelectric coupling ion focusing device, the Venturi and Konda effects are utilized, and the ionization effect and transmission efficiency of spray ions before entering a mass spectrometer feed interface under atmospheric pressure can be effectively improved. According to the front half part of the device, an embedded device comprising an inlet and a main body portion are combined with each other, such that a tapered slit which is communicated with a gas chamber can be formed. Nitrogen is fed at an air inlet, such that the annular air chamber can be filled with high pressure gas, and then, the gas is evenly blown out from the tapered slit, and therefore, high-speed airflow can be formed at an ion funnel and an outlet, it is just the small part of the high-speed nitrogen that drives the movement of gas which is around a pipeline and contains target ions. A series of electrode plates are arranged to form the ion funnel, and the inner diameter of the electrode plates is gradually reduced along the direction of the outlet, and at the same time, DC and RF voltage is applied on the electrode plates. In a test, gas-phase ions can be aggregated through the combination of gas dynamics and an electric field force effect.

The present invention provides dielectric barrier discharge ionization, including a dielectric barrier discharge tube and an electrode pair consisting of a first electrode and a second electrode. At least a portion of the dielectric barrier discharge tube is provided between the first electrode and the second electrode. The electrode pair can ionize the sample after the power is turned on. The dielectric barrier discharge tube is in communication with a vacuum portion. The pressure range in the dielectric barrier discharge tube is 0.01 to 100 Pa. The dielectric barrier discharge ionization provided by the invention remedies the defects of existing low-pressure ion sources in the pressure range, and provides the low-pressure ion source with high ionization ability, high versatility and simple devices.

The invention provides functional ceramic tiles with topcoats capable of exciting release of negative oxygen ions. The functional ceramic tiles comprise ceramic tile main bodies and the topcoats whichare located on surfaces of the ceramic tile main bodies and can excite release of the negative oxygen ions, wherein the topcoats capable of exciting the release of the negative oxygen ions are mainlyprepared from the following raw materials in parts by weight: 10-30 parts of potassium feldspar, 3-13 parts of wollastonite, 6-20 parts of borax, 5-18 parts of boronaluminum, 8-25 parts of tourmaline, 3-8 parts of rare-earth oxide powder, 2-10 parts of bentonite, 2-8 parts of zeolite, 8 or less parts of nano titanium dioxide, 6 or less parts of sodium tripolyphosphate and 6 or less parts of anhydrous sodium metasilicate. The invention further provides a preparation method for the functional ceramic tiles. The functional ceramic tiles can release the negative oxygen ions beneficial to human health for a long time and can be used for remarkably enhancing blood circulation, promoting metabolism and improving immunity; and meanwhile, the functional ceramic tiles further have bacteriostasis and degerming actions, have an obvious deodorizing function and can be used for purifying indoor air and improving the quality of the indoor air.