304 results about "Ion" patented technology

The invention relates to small sized particles. These particles comprise at least on the surface thereof a wall composed of a mixture of at least one protein and at least one polysaccharide which are cross-linked, preferably by interfacial cross-linking with a polyfunctional acylating agent which forms at least amide and ester bonds, and optionally anhydride bonds with amine, hydroxyl or carboxyl functions of the protein and of the polysaccharide, and which comprise hydroxamic groups on the surface thereof for chelating metal ions. These particles can be used in cosmetics or in pharmacy notably for the chelation or release of metal ions.

An electrically controlled propellant comprising an ionomer oxidizer polymer binder, an oxidizer mix including at least one oxidizer salt and at least one eutectic material, and a mobile phase comprising at least one ionic liquid is disclosed. The PVAN polymer in the present invention may be of medium (>100,000) to high molecular weight (<1,000,000). The present invention also may include the controlled cross-linking of the polymer using epoxy resins, the use of moisture barrier coating, the addition of an energetic combustion additives such as Chromium III and polyethylene glycol polymer.

A microelectromechanical structure and device and methods of forming and using the structure and device are disclosed. The structure includes a mechanical element, an ion conductor and a plurality of electrodes. Mechanical properties of the structure are altered by applying a bias across the electrodes. Such structures can be used to form devices such as resonators for RF applications.

The present invention provides a process for forming a bulk monocrystalline gallium nitride by using supercritical ammonia. The process comprises the steps of forming a supercritical solvent containing ion or ions of alkali metals in an autoclave; and dissolving a monocrystalline gallium nitride prepared by flux methods as a feedstock in this supercritical solvent to form a supercritical solution, and simultaneously or separately recrystallizing gallium nitride on the face of a seed.

A flux without halogen, rosin and washing for Pb-free solder contains activating agent (8.0-15.0 Wt %), cosolvent (28-40), filming agent (0.1-1.0), corrosion retardant (0.1-0.5) and the solvent and deionized water (rest).

A method and system for controlling a silicon nitride etching bath provides the etching bath including phosphoric acid heated to an elevated temperature. The concentration of silicon in the phosphoric acid is controlled to maintain a desired level associated with a desired silicon nitride/silicon oxide etch selectivity. Silicon concentration is measured while the silicon remains in soluble form and prior to silica precipitation. Responsive to the measuring, fresh heated phosphoric acid is added to the etching bath when necessary to maintain the desired concentration and silicon nitride:silicon oxide etch selectivity and prevent silica precipitation. The addition of fresh heated phosphoric acid enables the etching bath to remain at a steady state temperature. Atomic absorption spectroscopy may be used to monitor the silicon concentration which may be obtained by diluting a sample of phosphoric acid with cold deionized water and measuring before silica precipitation occurs.

The invention discloses a method for synthesizing gemini long chain alkyl quaternary ammonium salts by enabling long chain alkyl tertiary amine mixture to be reacted with dibromo hydrocarbon or epoxy chloropropane and an application as a drag reduction and energy conservation agent of a circulating water system. The method comprises the following steps: stirring and dissolving the long chain alkyl tertiary amine mixture in an organic solvent, and heating to reflux temperature; slowly adding dibromoethane or epoxy chloropropane for generating mixture of asymmetric and symmetric gemini long chain alkyl quaternary ammonium salts; stopping the reaction when the tertiary amine conversion rate is above 75%, and performing vacuum evaporation for recovering the solvent; and using deionized water to dissolve distillation products, and oxidizing the non-converted raw material to tertiary amine oxide with hydrogen peroxide at the temperature of 60-80 DEG C. A gemini quaternary ammonium salt surfactant is used as main molecules of the drag reduction agent, an organic acid corrosion inhibitor is used as auxiliary ions, the molar ratio of the main molecules to the auxiliary ions is 1: (2.4-6.0), then the drag reduction agent which is applicable to the range of 5-95 DEG C is prepared, and the drag reduction efficiency of the drag reduction agent to the circulating water system achieves 40%-70%, and the corrosion inhibition efficiency achieves 60%-95%. By adopting the gemini long chain alkyl quaternary ammonium salt surfactant, the problems of strong corrosion, great irritation and a narrow range of applicable temperature of the traditional long chain alkyl quaternary ammonium salt surfactant can be overcome.

The invention discloses a manufacture method for a slip sheet of an air conditioner compressor, relating to the parts of air conditioner compressors. The method comprises the steps of: taking the elements in percentage by mass: C 3.2-3.8%, Si 2.0-2.6%, Mn 0.5-1.0%, Cr 0.2.-0.6%, Mo 0.1.-0.6%, V 0-0.5%, B 0-0.1%, Ti 0.04-0.15%, Nb 0-0.5%, Cu 0-0.5%, P < 0.3%, S <0.1% and the balance of Fe; and carrying out smelting, inoculating, casting, grinding, quenching and tempering heat treatment, refining, polishing and ion-sulfurizing to manufacture the slip sheet product of the air conditioner compressor. According to the product, a certain amount of carbides and flake graphite and a tempered martensite substrate with good comprehensive mechanical property are formed in a cast structure, and the manufacture method overcomes the defects of high cost and tedious machining procedures of the traditional high-speed steel or stainless steel slip sheets.

Embodiments in accordance with the present invention relate to packed-column nano-liquid chromatography (nano-LC) systems integrated on-chip, and methods for producing and using same. The microfabricated chip includes a column, frits/filters, an injector, and a detector, fabricated in a process compatible with those conventionally utilized to form integrated circuits. The column can be packed with supports for various different stationary phases to allow performance of different forms of nano-LC, including but not limited to reversed-phase, normal-phase, adsorption, size-exclusion, affinity, and ion chromatography. A cross-channel injector injects a nanolitre/picolitre-volume sample plug at the column inlet. An electrochemical/conductivity sensor integrated at the column outlet measures separation signals. A self-aligned channel-strengthening technique increases pressure rating of the microfluidic system, allowing it to withstand the high pressure normally used in high performance liquid chromatography (HPLC). On-chip sample injection, separation, and detection of mixture of anions in water is successfully demonstrated using ion-exchange nano-LC.

A process and method for making a superior lubricant or distillate fuel component by the oligomerization/alkylation of a mixture comprising olefins and isoparaffins to produce an alkylated (“capped”) olefin oligomer using an acidic chloroaluminate ionic liquid catalyst system. Preferably the ionic liquid catalyst system comprises a Brönsted acid.

The invention relates to an ecological slope protection structure for an ion rare earth mine. The ecological slope protection structure is characterized in that bamboo frames are distributed on an inclined slope surface of a side slope and are pressed into soil; each bamboo frame is prepared from bamboo frame strips in longitudinal and horizontal directions through fixing together, and the bamboo frame strips with upward concave surfaces are distributed on the inclined slope surface of the side slope; through holes are formed in the bamboo frame strips, and drain pipes are distributed at the through holes and inserted into the soil of the inclined slope surface of the side slope; slope base drainage ditches are distributed at the bottom of the inclined slope surface of the side slope, and side drainage ditches are distributed on the upper, left and right edges of the inclined slope surface of the side slope and communicate with the slope base drainage ditches; trees are planted on the step-slope leveled land; bamboo piles are beaten into the inclined slope surface of the side slope, the slope base and the step-slope leveled land respectively; a first section of bamboo joint is reserved at the upper part of each bamboo pile, an ecological planting bag is arranged in the bamboo pile above the first section of bamboo joint, and water seepage holes are formed in the bamboo pile walls; each ecological planting bag is formed by wrapping a grass seed base material into geotechnical cloth. The ecological slope protection structure can be used for preventing and controlling side slope landslide, is low in construction cost, and realizes ecological and environmental protection.

The invention discloses a preparation method for a co-doped type and separately-coded type ZnInS/ZnS dual-emitter quantum dot. The preparation method comprises preparation of white-light emitting ZnInS:Ag/ZnS/ZnS:Mn/ZnS and ZnInS:Ag & Mn/ZnS/ZnS/ZnS nano materials, wherein by adopting a core-shell structure, the ZnInS:Ag/ZnS/ZnS:Mn/Zn nano material is synthesized by the following steps of: (1) preparing a color-adjustable ZnInS: Ag core; (2) carrying out core-covering on a first molar layer ZnS; and (3) adsorbing Mn ions and carrying out cover-covering on second and third molar layers; and for the preparation of the ZnInS:Ag & Mn/ZnS/ZnS/ZnS nano material, injecting time of a Mn precursor in the step (3) is advanced to injecting time of an S precursor in the step (1). The preparation method adopts a single-pot thermal injection process, is simple in process, easy to operate, capable of being completed in common chemical laboratories, and easy to popularize; and raw materials are convenient to supply, and are low in price.

The present invention relates to a method for detecting ferric ions by using fluorescent carbon quantum dots. The method comprises: preparing a dispersion liquid having a mass ratio of glucose and to absolute alcohol of 40:1-5:1; placing into a hydrothermal reaction kettle, and carrying out a reaction for 5-20 h in a 80-230 DEG C environment to obtain fluorescent quantum dots; reactively adding a carbon quantum dot solution to a group of quartz fluorescence cuvettes; adding a ferric ion solution with a concentration of 10<8>-10<5>, placing in a fluorescence spectrophotometer, testing the optimal excitation wavelength of the carbon quantum dots, adjusting the excitation wavelength of the fluorescence spectrophotometer to the optimal excitation wavelength, and recording the change curve of the fluorescence intensity of the solution along with the fluorescence excitation wavelength change; drawing the change curve of the carbon quantum dot solution fluorescence intensity reducing percentage along with the iron ion concentration change, and fitting to obtain a fitting formula; and calculating the ferric ion concentration in the detected object by using the formula. According to the present invention, the method is simple and easy to perform, and other organic reagents are not required to be added.

The invention discloses a method for preparing an inorganic aromatic nano-antibacterial agent and antibacterial fabrics. The method for preparing the inorganic aromatic nano-antibacterial agent comprises the following steps: swelling Carbomer resins with surfactants in deionized water, adjusting the PH value to 6.0-7.0 with triethanolamine and forming a stable colloid emulsion; and adding reducing polymers and a silver salt to the colloid emulsion and adding small molecular reducing agents for reduction at 5-100 DEG C in order to improve the purity of silver, thus obtaining the nano silver antibacterial agent. The antibacterial agent is used for padding or soaking the fabrics and the prepared antibacterial fabrics have the characteristics of fast antibacterium, high efficiency, broad spectrum and durability. The preparation methods and the finishing process have the advantages of simpleness, low cost, no pollution and easiness in industrialization.

The invention discloses a method for preparing a ZnWO4 nanorod photocatalysis material. The method includes preparing a tungstic acid solution A, a zinc chloride solution B and a sodium citrate solution C; dropwise adding the solution A and the solution C into the solution B to form a solution D; regulating potential of hydrogen (pH) of the solution D to 6-8, and uniformly stirring to obtain a solution E; adding the solution E into a microwave hydrothermal reaction kettle, performing a heating reaction, naturally cooling the solution E to the room temperature after the reaction is finished, and taking out the reaction kettle; and opening the reaction kettle, washing a product for 4-6 times by deionized water and absolute ethyl alcohol, and drying to obtain the ZnWO4 nanorod photocatalysis material. According to the method, the microwave hydrothermal method is utilized to rapidly synthesize the ZnWO4 nanorod with the photocatalysis property, the later crystallization heat treatment is not required, the obtained product is high in purity, and the shape is controllable. The ZnWO4 nanorod with the photocatalysis effect can be synthesized in 10 minutes, and the degradation rate of the prepared ZnWO4 nanorod to rhodamine B in 50-60 minutes can reach to 97%-99%.

A method of depositing a layer of a coating material (e.g., DLC protective overcoats of magnetic and magneto-optical recording media) on a surface of a substrate/workpiece, the layer including relatively thin and relatively thick regions defining a thickness gradient at a boundary therebetween, comprising steps of: (a) providing a filtered cathodic arc deposition (FCAD) process/treatment chamber comprising a FCAD source including means for providing a focused plasma beam containing ions of a coating material and means for scanning the plasma beam over a substrate/workpiece surface; (b) providing the process/treatment chamber with a substrate/workpiece including a surface for deposition thereon; and (c) forming on the surface a layer of coating material including the relatively thin and relatively thick regions defining the thickness gradient at the boundary therebetween by scanning the plasma beam over at least a portion of the surface.

A system, method, and apparatus for desalinating water, such as seawater. The system, method, and/or apparatus includes an electrodialysis cell that can separate monovalent ionic species from multivalent ionic species, so they may be separately treated. Each separate treatment may include precipitation of salt via the use of an organic solvent, followed by processing of precipitated salts and membrane treatment of water to remove solvent and remaining salts.

The invention discloses a coating having heat-insulation and reflection functions. The coating comprises, by weight, 40-60 parts of a pure acrylic emulsion, 30-40 parts of hollow glass microspheres, 20-30 parts of ceramic microspheres, 10-30 parts of expanded perlite, 10-20 parts of titanium dioxide, 5-15 parts of mica powder, 3-8 parts of kaolin, 5-10 parts of barium sulfate, 2-8 parts of carboxyethyl cellulose, 5-10 parts of nano-silica, 8-15 parts of nanometer metal oxide, 3-8 parts of a filler, 1-5 parts of a film forming assistant, 4-8 parts of an assistant and 30-50 parts of deionized water. The coating having heat-insulation and reflection functions has good economic property, and also has heat-insulation and light and heat reflection functions.

The invention discloses a full extracting process for preparing ultra-pure gadolinium oxide and a product thereof. Compared with the traditional ion exchange and chromatography extraction method, the process has the characteristics of large yield and low cost. The primary-pure gadolinium oxide (Gd2O3 at the grade of 99.99 percent) is obtained in advance by adopting a rough gadolinium enriching substance (Gd3O3 at the grade of 10-90 percent) as a raw material and adopting a mixed extracting agent of P507 and P204 through optimized control of factors, such as material liquid concentration, grade, phase ratio, acidity, and the like and classical extraction and separation in two steps; then the electrochemical reduction and the fully-closed type extraction and separation are performed for carrying out deep purification, and trace rare-earth element impurities are removed; and finally, the ultra-pure gadolinium oxide product with the rare-earth impurity content below 0.5ppm is obtained.

This invention relates to cellulose II phosphate which may be partly carbamidated, and also to a metal-adsorbing material making use of the same. This cellulose II phosphate efficiently adsorbs metal ions in a solution, and can be used as a metal-adsorbing material and in a metal-adsorbing system.

A making method of a composite type biological chip based on a photonic crystal comprises four steps which are preparation of hard substrates, preparation of photonic crystal thin membranes, connection of membranous substrates and surface treatment of the substrates. (1) the preparation of hard substrates: common hard substrates are cleaned by soapy water, washed by de-ionized water and dried, and amino-group or hydroxyl is decorated on the surfaces of the substrates; (2) the preparation of photonic crystal: the nano-microspheres such as specific monodisperse silicon dioxide or polystyrene and the like, which are different in size according to the positions of testing signals, are assembled on the surfaces of the treated substrates to form the photonic crystal thin membrane with the thickness of 20 to 30 microns (3) the connection of membranous substrates: the surface of the photonic crystal thin membrane is laid with a layer of the membranous substrate and the connection is fixed by utilizing the chemisorption or the mutual function between positive and negative charges; (4) the surface treatment of the substrates: by using the methods such chemisorption and the like, chemical groups which can be fixedly connected with biomolecules to be tested are decorated on the membranous layer parts of the surfaces of the composite substrates which are formed in the step (3).

The invention relates to esterification catalyst, which is inorganic compound including ionic liquid and inorganic compound with Lewis acid. The cation of the ionic liquid is imidazole or pyridine taken place by C1C15 alkyl, wherein, the substituting group number is one or more, and the anion is BF4<-> or PF6<->; the inorganic compound with Lewis acid is selected from FeCl3, SnCl4, ZnCl2 or Zn (NO32) and so on, and the mol ratio of the inorganic compound with Lewis acid and the ionic liquid is 0.01 to 1.0:1. The catalyst is used for esterification reaction, the selectivity is good, the yield rate of the esterified ester is high, and the service life is long.