47 results about "White substance" patented technology

The invention relates to a preparation method of ultrathin porous N doped g-C3N4 photocatalyst, and an experiment employs hydro-thermal pretreatment and calcination for preparation. The method concretely comprises the following steps: (1) urea and melamine are added into 50ml of distilled water according to a mol ratio 3:1, stirring is carried out on a constant temperature magnetic stirrer for 30 minutes, a solution is transferred to a 100ml hydrothermal reactor, and the reactor is placed in a baking oven at 180 DEG C and insulation is carried out for 24 hours. (2) natural cooling is carried out to a room temperature, a white substance in the reactor is washed with distilled water for 3-5 times, and drying is carried out (60 DEG C for 10 hours). The dried white substance is grinded and placed in a crucible, and the crucible is placed in a muffle furnace and calcination is carried out at 520 DEG C for 4 hours. The N doped g-C3N4 with an ultrathin porous structure has good photocatalytic hydrogen production, NO gas degradation, and pollutant degradation performance, and oxidation and reductibility are greatly improved; compared with the prior art, N/g-C3N4 with high specific surface area is obtained by using the hydrothermal pretreatment method, raw materials are cheap, the process is simple and green, and the method is suitable for industrialized production of large batch with wide application prospects.

The present invention provides an apparatus for white-matter-enhancement processing, and a method and a program for white-matter-enhancement processing that makes it possible to analyze distinguishing characteristics of the brain of a living body, such as degree of growth and development, left/right brain dominance, areas of strength and weakness, and personality traits. The apparatus for white-matter-enhancement processing of the present invention has a memory part for inputting and storing contrast images of a brain of a living body; a white-matter-enhanced image-creating part for creating white-matter-enhanced images, based on stored contrast images; a display processing part for displaying the white-matter-enhanced images thus created; and a branching analysis part for analyzing distinguishing characteristics of the brain of a living body, based on any one of or a combination of the characteristics of branches in the white-matter-enhanced images that are created: their number, thickness, length, location, intensity, shape and/or size.

The invention belongs to the biological technical field, which discloses a morchellaconica extracellular polysaccharide extractive and a preparation method and application thereof. The extractive is liquid fermentation liquor which is obtained by fermenting and culturing morchellaconica liquid and separating mycelium through centrifugation and vacuum filtration. The liquid fermentation liquor is concentrated to 1/3 to 1/6 of the original bulk to obtain concentrated solution and the concentration temperature is 50 to 70 degrees centigrade. The protein of the concentrated solution is removed and the concentrated solution is centrifuged. Activated extract is obtained. Polysaccharide in the concentrated solution is dialyzed and settled in 95 percent of ethanol at 0 to 10 degrees centigrade for 12 to 25 hours, the bulk of which is once to 5 times larger than the bulk of the activated extract. The pH value is 4 to 8. Flocculent white substance is precipitated after still placement. White sedimentation is obtained after centrifugation separation, which is frozen and dried to obtain the morchellaconica extracellular polysaccharide extractive. The invention has simple preparation process and allows mass production. The extractive has no harm on human body and good antioxidant and anti-aging action and can be used for preparing antioxidant and anti-aging medicine or health care food.

The invention discloses a method for preparing molybdenum trioxide in a nanometer structure, which comprises the following concrete steps that: (1) a substrate is cleaned and dried; (2) a molybdenum evaporation source is placed in an electric heating plate heating region, the substrate is placed in a position being 0.1 to 5.0m right above the molybdenum evaporation source, an electric heating plate is switched on, the temperature is raised to 200 to 600 DEG C, and the temperature is maintained for 0.1 to 48h; (3) a power supply is switched off, the substrate is cooled to the room temperature along with the electric heating plate, the substrate is taken down, and a layer of white substances, i.e. molybdenum trioxide is deposited on the substrate surface. The method has the advantages that the process equipment is simple, the cost is low, the preparation temperature is low, the method is suitable for the large-area preparation on different substrates, the yield is high, in addition, no catalyst is needed in the preparation process, and the prepared molybdenum trioxide product has good crystallization performance without any impure phase.

The invention discloses a silver nano-particle coated by organic acid silver, a method for preparing the silver nano-particle and application thereof. The silver nano-particle coated by the organic acid silver is characterized in that the silver nano-particle is coated by the organic acid silver, the average particle sizes of coated particles range from 6 nm to 12 nm, and the coated particles are uniformly dispersed. The method for preparing the silver nano-particle coated by the organic acid silver includes (1), mixing NaOH, organic acid and deionized water with one another to obtain first mixtures, heating the mixtures until the temperature of the first mixtures reaches a certain temperature, immediately adding silver nitrate into the first mixtures, stirring the silver nitrate and the first mixtures to obtain second mixtures, allowing the second mixtures to stand still, layering the second mixtures and acquiring upper-layer white waxy substances; (2), centrifuging, washing and drying the white substances obtained at the step (1), then heating the white substances in nitrogen until the temperature of the white substances reaches 220-280 DEG C and preserving heat for 80-100 min to obtain the silver nano-particle coated by the organic acid silver. The silver nano-particle, the method and the application have the advantages that the method is easy to implement and low in cost, is safe and reliable and has a broad industrial application prospect, and the prepared silver nano-particle coated by the organic acid silver can be used as brazing filler metal for electronic packaging.

The invention relates to a method for preparing zinc oxide in a three-dimensional nanostructure with a cryogenic fluid method. The method concretely comprises the following steps of: a, carrying out hydrophilicity treatment on processed and single-side polished silicon chips; b, dissolving 0.1098g of Zn(AC)2.2H2O into 25 ml of ethanol, stirring until the Zn(AC)2.2H2O is completely dissolved, spin-coating on the polished surface of the silicon chip obtained in the step a, and drying; c, dissolving Zn(NO3)2.6H2O (0.025M) and hexamethylenetetramine (0.025M) into 250 ml of deionized water, stirring for dissolving, then adding 1.16 g of EDTA-2Na.2H2O, and stirring until the EDTA-2Na.2H2O is completely dissolved; and d, hanging and immersing the silicon chip obtained in step b with the front surface facing downwards into the solution obtained in step c, reacting for 4-6h at 80 DEG C, washing with deionized water, and drying to obtain a layer of white substance on the silicon chip, i.e. the zinc oxide in the three-dimensional nanostructure. In the invention, the zinc oxide in the three-dimensional nanostructure is prepared with the cryogenic fluid method, the whole reaction process is carried out in the open solution, thereby the high pressure condition is avoided, expensive and complex instruments and high pressure reaction kettles are unneeded, the reaction device is simple, and the process condition is environment friendly and mild.

The invention provides a method for preparing calcium silicate nanowires in batches at low cost, belonging to the technical field of nano material preparation. The calcium silicate nanowires are composed of nanowires with diameter of 10-150nm, mean diameter being less than 100nm and length of 50mu m. The preparation method is characterized by mixing the mixture of calcium oxide and silica with water and then placing the mixture into a closed container to be uniformly stirred, preserving heat for 0-48h under the temperature of 150-300 DEG C and pressure of 1-10MPa, collecting aqueous solution with loose white substances after heat preservation and natural cooling, collecting flocculent loose white powder after drying the aqueous solution in an oven under the temperature of 100 DEG C, calcining the white powder in a muffle furnace for 1h under the temperature of 800 DEG C and collecting the flocculent loose white powder after natural cooling, namely the calcium silicate nanowires. In the method, the raw materials have rich sources and the products dispense with subsequent processing, therefore, the obtained calcium silicate nanowires have low cost and can be prepared in batches.

The invention discloses a complex method for compounding a special filling, comprising the following steps that: the special filling is dispersed into a dispersed suspending liquid with a mass concentration ranging from 1 to 30 percent, the dispersed suspending liquid is mixed with a macromolecule water solution with a mass concentration ranging from 1 to 25 percent to obtain a mixture, the mixture and an acidic electrolyte bath solution are mixed evenly, or a fatty acid is added into the mixture and is mixed evenly to obtain a solution, and then the solution and the acidic electrolyte bath solution are mixed evenly; after let stand, an upper layer of clear solution is eliminated, a lower layer of white substance is the special compounded filling. The complex method can improve the hydrophilicity of the special filling and the fiber, increases the use amount of the special filling and obviously improves the intensity of the paper. The complex method can improve the retention of the filling, increase the whiteness of the paper, reduces the waste water processing load and further saves the fiber use amount.

The invention discloses a synthesis technique used for a Beta-calcium phosphate material, comprising the steps as follows: quantitative polystyrene microspheres are added into concentrated sulfuric acid, sufficiently mixed and dispersed by ultrasonic, centrifuged, washed and dried, thus gaining vulcanized polystyrene microspheres; calcium nitrate solution is complexed with diammonium phosphate solution so as to lead the molar ratio of calcium and phosphorus in the complexed solution to be 1.4-1.6; the pH value of the solution is adjusted to be 8-10; furthermore, a surfactant (CTAB) and the vulcanized polystyrene microspheres are added in the complex so as to react sufficiently and gain a white substance which is washed, dried and calcined in a heating surface; subsequently, the white substance is heat-preserved for 2-4 hours at the temperature of 700-1000 DEG C and cooled with the furnace to gain the Beta-calcium phosphate powder. The synthesis technique adds the PS microspheres in the chemical reaction process to synthesize the Beta-calcium phosphate with the aperture and high purity, and has the advantages of simple process, strong repeatability, stable performance of the product, and the like.

The invention provides a biomarker for diagnosing cerebral infarction and white matter lesion and application of the biomarker. The biomarker is an application of galactosylceramide in preparation of a detection reagent for diagnosing cerebral infarction and white matter lesions, and the biomarker galactosylceramide is combined with glucosylceramide, beta-allopietapentaol, platyclalene, 1, 3Z, 6Z, 9Z-nonane tetraene, p-cymene, oxalic acid, 3-(stearoyloxy)-4-(trimethyl ammonium) butyrate for diagnosing cerebral infarction and white matter lesions, so the risk of suffering from cerebral infarction and white matter lesion can be judged, and the cerebral infarction and white matter lesion can be prevented in advance.

The invention relates to a preparation method of a zinc glycinate complex without introducing impurity ions. The method comprises the following steps: adding glycine and zinc hydroxide which serve asraw materials into water to dissolve to obtain corresponding aqueous solution and turbid liquid; conveying the glycine aqueous solution and the zinc hydroxide turbid liquid into a supergravity reactoraccording to the flow speed of 1:1 to obtain first mixed liquid; adding the first mixed liquid into an enamel reaction kettle and performing indirect heating reaction to obtain an intermediate product containing white substances; and pumping the intermediate product into a plate and frame filter, performing solid and liquid separation, and drying and pulverizing the separated filter cake to obtain the zinc glycinate complex. By the method, the glycine and the zinc hydroxide serve as the raw materials, H<+> ions of carboxyl of glycine molecules and OH<-> ions in zinc hydroxide molecules are bonded to generate H2O only under the existence of the glycine and zinc ions, so that any impurity ions are not introduced in the production process and the preparation method of the zinc glycinate complex without introducing impurity ions is an environment-friendly preparation method.

White substances are easily generated on surfaces of concrete and cement mortar products, and the phenomenon is whiskering. A main ingredient in concrete is calcium silicate, and is subjected to hydration reaction after contacting with water, so as to form free calcium, silicic acid and hydroxyl; water diffuses to the surface of a wall body under the action of capillary pressure; the substances such as free calcium, sodium and potassium are migrated to the surface of the wall body by taking water as a carrier, and are left on the concrete surface to form white powdery crystal along with evaporation of water after reaching the concrete surface, or the substances react with carbon dioxide in air to crystallize on the concrete surface and form a white hard block; and the forming of the white substances is concrete whiskering. The white substances are stubbornly left on the concrete surface for a long period of time under certain conditions; the color uniformity of the concrete surface is destroyed; and the concrete building surfaces are certainly damaged. The invention provides a damp-proof and whiskering-proof paint for a concrete wall space and a preparation method. The paint is non-toxic and odorless, belongs to an environment-friendly material, and is good in damp-proof and whiskering-proof effects.

The invention discloses a composite method for a composite talcum powder filler, the method comprises the following steps of: dispersing talcum powder into dispersing suspension with 1 to 50 percent mass concentration, after mixing evenly with macromolecular water solution with 1 to 30 percent mass concentration, mixing the talcum powder with acidic electrolyte solution, and stirring evenly; or adding fatty acid and mixing evenly, then mixing with the acidic electrolyte solution, and stirring evenly; after standing the stirred evenly liquid and removing an upper layer of clear liquid, a lower layer of white substance is the composite talcum powder filler. The composite method for the composite talcum powder filler can improve hydrophilicity of the talcum powder and fiber, increase amount of the talcum powder as well as strength of paper, the composite method for the composite talcum powder filler also has the advantages of improving filler levels, increasing paper brightness, reducing wastewater treatment load and further saving the using amount of the fiber.

A UV camouflaging substance, in the form of a solid, powder, paste, film, or liquid, can be applied to objects such as fabrics to match the ultraviolet reflectivity of the objects with their immediate surroundings. Embodiments are transparent to visible and IR light, and can be applied without changing the visible appearance of the objects. Other embodiments visibly match the surrounding environment, such as a white substance used near snow. Different embodiments can be layered on top of each other to form UV camouflage textures and to adapt to changing environments. Some embodiments can be washed off, to avoid a build-up of camouflage layers. Embodiments include UV-interactive micro- or nano-particles suspended in a binding agent which transmit, reflect, absorb and/or scatter ultraviolet rays. Some particles are absorbent, while others are approximately one-quarter wavelength thick, and suppress UV light by inducing half-wavelength phase shifts between light reflected from opposing surfaces.

The invention discloses a method for simultaneously measuring iodine content and bromine content in soil. According to the method comprises the following steps that: a sample and sodium carbonate areuniformly mixed, and then are covered with sodium carbonate again; the sample and the sodium carbonate are subjected to high temperature sample melting; a white substance in a content obtained throughsample melting is dissolved with water; water is added; so that the volume of an obtained mixture can be constant and reaches a certain volume; the mixture stands still, a supernatant is taken; an antioxidant can be added or not added; positive ion exchange resin is added, an obtained mixed solution is shaken up; water is added to dilute the solution; an obtained mixed solution is shaken up; thesolution is adopted as a to-be-measured solution; a blank solution and the to-be-measured solution are measured through ICP-MS, the mass concentrations of iodine and bromine in the blank solution andthe to-be-measured solution are obtained according to the working curves of iodine and bromine; and the mass concentrations are converted into the contents of iodine and bromine in the sample according to a formula. According to the method, a single sample melting reagent is adopted, so that reagent blank is controllable, and therefore, a determination result is more effective and reliable. The method provided by the invention has the advantages of high precision, high accuracy, lower detection limit and wide linear range, and meets the requirement of the simultaneous detection of iodine and bromine in soil samples in batches.

The invention relates to a preparation method of a cadmium oxide metallographic specimen. The preparation method comprises the following steps: (1) cutting out the cadmium oxide specimen on a cadmiumoxide target material by linear cutting according to metallographic specimen preparation standards; (2) mechanically polishing the metallographic specimen obtained in the step (1); (3) carrying out mechanical polishing on the metallographic specimen obtained in the step (2); (4) carrying out chemical corrosion on the metallographic specimen obtained in the step (3); and (5) washing and drying themetallographic specimen obtained in the step (4). The invention also relates to a cadmium oxide metallographic specimen. The corrosive agent used in the method is an ethanol dilute solution of acid, and the defect that the grain boundary cannot be observed due to the fact that cadmium oxide generates white substances in the corrosion process is overcome. Meanwhile, when the same abrasive paper isused for grinding, the sample ground for the first time needs to be rotated by 180 degrees to be ground, and the grinding means can overcome the defect that the metallographic observation is fuzzy dueto the fact that an inclined plane appears in the grinding process.

The invention provides a biomarker for white matter lesion and application thereof, and particularly relates to application of a biomarker ceramide (d18: 0/24: 1 (15Z)) in preparation of a detection reagent for diagnosing white matter lesion. The risk of the white matter lesion is judged by combining a biomarker lipoceramide (d18: 0/24: 1 (15Z)) with one or two of PEIPC, phosphatidylcholine (P-18: 1 (9Z)/0: 0), phosphatidylcholine (O-18: 0/0: 0) or galactosylceramide (d18: 0/16: 0), and the white matter lesion can be prevented in advance.

The invention discloses a preparation method of flake aluminum nitride powder and belongs to the field of ceramic. The preparation method comprises the following steps: dissolving aluminum salt and anitrogen-containing organic matter into a mixed solution of water and an alcohol type solvent; heating at 40 to 60 DEG C and stirring until the aluminum salt and the nitrogen-containing organic matterare completely dissolved; heating at 60 to 80 DEG C and stirring until a white substance is formed; cooling to 40 to 45 DEG C; then filtering to obtain an aluminum nitride precursor; transferring thealuminum nitride precursor into a high-temperature-resisting porcelain boat; keeping the temprature of 900 to 1200 DEG C for 2 to 4h under a mixed gas environment containing nitrogen gas, so as to obtain the needed flake aluminum nitride powder. The preparation method disclosed by the invention has the beneficial effects that the water and the alcohol type solvent are mixed and used as a solvent;in a heating process, the nucleation of the aluminum nitride precursor is controlled on an interface formed by the water and alcohol, and furthermore, the size of aluminum nitride is controlled; whena crystal nucleus is formed, the alcohol is volatilized, so that the aim of inhibiting the growth of the crystal nucleus is realized and the formed aluminum nitride is of a flake structure; the sizeis 10 microns or less and the thickness is controlled to be 100nm or less.

A preparation method for niobium oxide or tantalum oxide with low use amount of ammonia gas includes steps of adjusting a fluoniobate or fluorotantalate solution until the content of HF acid is 4 mol/L or above; organically using MIBK (methyl isobuty ketone 4-methyl-2-pentanon) or octanol solution; extracting fluorotantalate or fluoniobate into an organic solution by using a mode of counter-current extraction in an extracting tank with 6-12 levels, wherein the ratio of an organic phase to a water phase is 1: 3 to 3: 1; setting the extracted solution at 100-150 g/L; distilling and recycling theMIBK or octanol solution; continuing heating remaining white substances; feeding water vapor; adding gasoline or ethanol, feeding the solution into a combustion chamber in a spraying mode; controlling the temperature at 800-1200 DEG C to obtain white tantalum oxide or niobium oxide product; and washing and roasting at low temperature to obtain a final product. By the preparation method, the usingamount of the ammonia gas can be reduced, the cost is saved, and environmental protection is facilitated.

The invention discloses three-dimensional modified graphene aerogel and a preparation method thereof and an application in water treatment. The preparation method comprises the following steps: (1) enabling a precursor of h-CN to be placed in a crucible, capping and calcining in an air atmosphere, setting calcining temperature and time, and naturally cooling to a room temperature, to obtain faintyellow powder; weighing the faint yellow powder obtained by calcining, adding alkaline solution, ultrasonic-dispersing, and placing in a water bath, heating and stirring; and after the reaction, afterwashing a milk white substance obtained by centrifuging the solution in a high speed, freeze-drying an obtained precipitate, to obtain h-CN nanowire powder; and (2) using graphene oxide aqueous dispersion as a precursor, and using the h-CN nanowire powder as a nitrogen doping agent, preparing three-dimensional h-CN/GO hydrogel through a hydrothermal method; and reducing the three-dimensional h-CN/GO hydrogel by using a reducing agent, to obtain the three-dimensional h-CN/r-GO composite aerogel. The prepared graphene aerogel is large in specific surface area, large in pore volume, and excellent in pore channel structure, has strong adsorbability, and is capable of achieving rapid and efficient selective adsorption to polarity and non-polarity organic pollutants.

The present invention relates to a white material which appears white in the visible light region and absorbs wavelengths in the near-infrared light region, a preparation method thereof, and use thereof and, more particularly, to a method for preparing a near-infrared absorbing material which has a whiteness (CIE L*) of 90 or higher in the visible light region and shows excellent particle preparation properties, and the use thereof in producing a product characterized by near-infrared absorption and antibacterial activity. To achieve the purpose of the present invention, selection is made of acopper pyrophosphate compound, which exhibits near-infrared absorption and antibacterial properties. Appearing green to blue, materials prepared using conventional techniques and methods have limitations in use whereas the material prepared according to the present invention has a high degree of whiteness and shows excellent microparticle properties, thus overcoming constraints attributed to colors. The copper pyrophosphate compound prepared finds applications and uses in various fields, including the use of near-infrared absorption properties in the prevention of forgery and modification ofsecurity products, machine reading, and the laser marking and welding of plastics, and the application of antibacterial activity to products added therewith.

The invention provides a preparing method of a lipid soluble platinum coordination compound with antitumor activities. The prepared platinum coordination compound is called cis-[bis-myristic acid-trans-dimethylamino-cyclobutane chloride (II)], and the molecular formula is C34H68N2O4Pt. The preparing method comprises the specific steps of firstly, preparing trans-diiodine-cyclobutane chloride, thendissolving silver nitrate and prepared trans-dimethylamino-cyclobutane chloride into a reaction solvent to be subjected to a hydrolysis reaction to obtain hydrolysate and filtering the hydrolysate; adding the filtered hydrolysate into myristic acid or myristic acid salt, so that the white substance generated in the reaction is the coarse product of the platinum coordination compound, and after the coarse product is recrystallized, the fine product can be obtained. The lipid soluble platinum coordination compound prepared according to the method is high in lipid solubility and stable and has agood inhibiting effect on liver cancer cells, can be prepared into freeze-dried powder and lipiodol turbid liquid and is conveniently used for clinically preparing liver cell cancer.