42results about How to "Reduce bleaching" patented technology

A microscopy device, particularly for use in an imaging fluorescence lifetime microscopy method is provided. The microscopy device comprises an illumination means for generating an illumination beam, an imaging detector for spatially resolved acquisition of an emission radiation emitted by an object to be examined, an illumination beam path between the illumination means and the object to be examined, and a detection beam path between the object to be examined and the detector. The illumination beam path comprises illumination optics which are designed to generate a light sheet of illumination radiation extending transverse to the axis of the illumination beam path, wherein the axis of the detection beam path is oriented substantially perpendicular to a section plane of the light sheet and of the object to be examined. The illumination means comprise a pulsed laser.

The invention discloses a low whitening alpha-cyanoacrylate adhesive, which comprises the components of alpha-cyanoacrylate, calixarene, an anion polymerization inhibitor and a radical polymerization inhibitor, wherein the content of the calixarene accounts for 0.5-3% of the mass of the alpha-cyanoacrylate, the content of the anion polymerization inhibitor accounts for 50-250ppm of the mass of the alpha-cyanoacrylate, and the content of the radical polymerization inhibitor accounts for 100-2000ppm of the mass of the alpha-cyanoacrylate. The low whitening alpha-cyanoacrylate adhesive without loss of curing speed and bonding strength can be prepared by mixing and stirring the alpha-cyanoacrylate, the calixarene, the anion polymerization inhibitor and the radical polymerization inhibitor in a three-neck flask at normal temperature.

A medical adhesive for adhering skin and hemostasis of viscera is prepared from at least two organic compounds chosen from alpha-ethyl cyanoacrylate, alpha-ethoxyethyl cyanoacrylate, alpha-butyl cyanoacrylate and alpha-octyl cyanoacrylate through proportional mixing.

A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for moving a fluorescent substance through the waveguide. The fluorescent substance includes a fluid base and a fluorescing agent and is capable of modulating at least one property of the electromagnetic radiation. A method is described for removing the fluorescing agent from the fluorescing substance and replacing it with a second, different fluorescing agent.

The invention relates to a scouring enzyme which is characterized by comprising the following raw materials in percentage by weight: 30-50% of sodium metasilicate, 3-10% of alkaline pectin compound enzyme, 20-50% of sodium carbonate, 5-10% of non-ionic surface active agent, 3-8% of peroxide oxydol activating agent, and 2-5% of sodium nitrilo triacetate; and the peroxide oxydol activating agent is prepared by compounding tetraacetylethylenediamine (TAED) and sodium percarbonate at a mass ratio of 1:2. The preparation method of the scouring enzyme comprises the following steps: non-ionic surface active agent and sodium carbonate are mixed uniformly and then are added with alkaline pectin compound enzyme to be mixed uniformly; peroxide oxydol activating agent and sodium nitrilo triacetate are added in the mixture in sequence; and sodium metasilicate is added finally, and the mixture is uniformly mixed and stirred for about one hour. The scouring enzyme can be used for boiling and bleaching of cotton yarn, cotton cloth, flax and ordinary cotton fabric or other mixed fabric before dyeing and has the advantages of simple process, low energy consumption, short time and low damage to fiber.

An object of the present invention is to provide an anti-glare optical film which reduces in whitening of a screen without sacrificing anti-glare property, and a process for preparing the same. There is provided an anti-glare optical film having irregularities on the surface, wherein a ratio of areas of the surface having an inclination angle of 1 DEG or less is 20% or less, a ratio of areas of the surface having an inclination angle of 5 DEG or more is 20% or less, and a standard deviation of a height of the surface is 0.2 mum or less. There is also provided a process for preparing an anti-glare optical film, comprising the steps of contacting a glass with an aqueous solution containing hydrogen fluoride to obtain a template which comprises the glass having the surface on which a fine irregular shape is formed so that approximately spherical concave shapes are arranged to be substantially compact, and transferring the irregular shape of the surface of the template onto the surface of a resin film.

A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a nonlinear waveguide. The nonlinear waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the nonlinear waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

The invention relates to a method for scanning microscopy wherein a specimen is scanned simultaneously with a plurality of illumination spots of an excitation light. The light emitted by one specimen location irradiated with one illumination spot is detected independently of the light emitted by another specimen location illuminated with another illumination spot. A microscopic image of the specimen can be compiled from the emitted light detected for the different specimen locations. The method provides that the intensities of the different illumination spots are set independently of one another, and in that the illumination spots are guided over the specimen one after another in a scan line. The invention additionally relates to a scanning microscope.

A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for moving a fluorescent substance through the waveguide. The fluorescent substance includes a fluid base and a fluorescing agent and is capable of modulating at least one property of the electromagnetic radiation. A method is described for removing the fluorescing agent from the fluorescing substance and replacing it with a second, different fluorescing agent.

The invention discloses a method for extracting nanocellulose and lignin from a wood fiber raw material. The method is characterized in that raw wood fibers rich in celluloses, hemicelluloses and lignin are used as the raw material, and undergo a one-step acidolysis process to directly extract the nanocellulose and lignin. The method concretely comprises the following steps: oxalic acid is combined with p-toluenesulfonic acid to acidolyze the wood fiber raw material, filtration is carried out after the acidolysis is finished to separate filter residues and a filtrate, the filter residues are dialyzed, and then are centrifuged to obtain the nanocellulose; and water is added to the filtrate to precipitate a large amount of the lignin with a high purity and high added values.

Described herein are chromophore compounds formed by interaction of ascorbic acid (AA) and a pyranoanthocyanin (PACN) compound. Also described herein are natural food colorant compositions that include chromophore compounds. The pyranoanthocyanins can be formed by the heterocyclic addition of the C4 and 5-OH of an anthocyanin, using a polar metabolite. Also described herein are pyranoanthocyanins, and methods of making and using the same.

A microscopy device comprises a continuous or pulsed wave laser light source; a pair of parallel mirrors configured to receive light from the light source and reflect an array of incoherent light sheets; a beam encoder (e.g., frequency modulation reticle, Hadamard basis, random modulation pattern) to segment the array of incoherent light sheets and encode each light sheet with a respective frequency in reciprocal space; a lens configured to direct the encoded light sheets towards a biological sample; and an image capturing device configured to receive a fluorescence signal from the biological sample.

The invention provides a preparation method of the flexible package material of a lithium ion battery, and relates to the technical field of the flexible package material of the lithium ion battery. The method comprises the following steps: cleaning an aluminum foil, forming an inner protection layer for aluminum foil preprocessing; preparing a heat-seal layer; at a temperature of 140-160DEG C, carrying out heat lamination on the heat-seal layer to cause the heat-seal layer to be formed on the side surface, which is provided with the protection layer, of the aluminum foil, and forming a first composite layer; at the temperature of 180-210DEG C, carrying out plasticization processing on the first composite layer, then, carrying out subsection cooling, keeping a first-section cooling temperature of 140-155DEG C for 1-5 minutes, and keeping a second-section cooling temperature of 100-130DEG C for 1-5 minutes; at a constant temperature of 20-70DEG C, rolling the first composite layer; and carrying out solidification after an outer protection layer is compounded to the aluminum foil of the first composite layer through dry method co-extrusion compounding. The heat-seal layer can be favorably directly bonded with the aluminum foil, on the basis that the integral mechanical property of the flexible package material can be kept or improved, brittleness is lowered, and cold stamping performance is improved.

A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for moving a fluorescent substance through the waveguide. The fluorescent substance includes a fluid base and a fluorescing agent and is capable of modulating at least one property of the electromagnetic radiation. A device is provided to remove a fluorescing agent from the fluorescing substance so that more of the same fluorescing agent can be added to clean fluid base.

The invention discloses a method for preserving and taking potato germplasm resources. The method comprises the following steps that S1, single sections of potato tissue culture seedlings are shearedand cut on a culture medium in a culture bottle, and a bottle opening is sealed by using a sealing film; S2, subculture is performed on the potato tissue culture seedlings treated in step S1 at the temperature of 20-22 DEG C, the illumination intensity of 3,200-3,500 lx and the illumination time of 15-18 hours per day; after two months, the illumination intensity is reduced to 2,300-2,500 lx, andculture is continued; after two months, the illumination intensity is increased to 2,700-3,000 lx; and after two months, microtuber is naturally fruited, the illumination intensity is reduced to 0, and continuous culturing is carried out until the microtuber passes away dormancy and starts to germinate; and S3, the microtuber starting to germinate obtained in step S2 is inoculated to a culture medium in a culture bottle, a bottle opening is sealed by using a sealing film, and a new round of germplasm resource preservation is carried out according to the operation in step S2 when the microtubergrows into a new test-tube plantlet. The method for preserving and taking potato germplasm resources is simple, convenient, easy to operate, low in cost and good in effect.

The invention discloses a superhigh pressure color protection fresh keeping unfreezing method of frozen livestock meat. The unfreezing method comprises the following steps of cutting the frozen livestock meat sold in the market into blocks, immersing the blocks in a 2%-5% calcium lactate solution for 1-10s, taking out the immersed blocks, and performing vacuum packing; putting the frozen livestockmeat after vacuum packing in a superhigh pressure container, enabling warm water of 30-60 DEG C, of which the mass is 2-10 times of that of the frozen meat, to into the container, performing superhigh pressure treatment under the pressure of 100-300MPa for 15-60min, performing unfreezing, and then placing the unfrozen livestock meat in a place of 0-4 DEG C for refrigeration and sales. The color and the quality of the livestock meat obtained by a color protection fresh keeping technique are both close to those of fresh livestock meat, unfrozen livestock meat is free from a recrystallization phenomenon, the unfreezing time is shortened, besides, the supply chain of domestic and foreign superior livestock meat is extended, and the production benefits are increased.

The present invention provides a system for imaging circulating tumor cells from blood after enrichment. The system is designed to provide optimum use in a clinical laboratory setting with minimum laboratory bench top space. Operator intervention is minimized compared to other analytical methodologies. The system is useful in the enumeration and identification of target cells in a sample specimen for screening and detection of early stage pre-metastatic cancer, monitoring for disease remission in response to therapy and selection of more effective dose regimens or alternative therapies for individual patients.

The invention relates to the technical field of alpha-cyanoacrylate adhesives, and particularly discloses a composition for reducing the whitening phenomenon of an adhesive and an alpha-cyanoacrylateadhesive. The composition for reducing the whitening phenomenon of the adhesive comprises an anhydride compound and gallic acid or an alkyl ester derivative of gallic acid. The anhydride compound andthe gallic acid or the alkyl ester derivative of the gallic acid are combined and added into the alpha-cyanoacrylate adhesive, and the whitening phenomenon of the alpha-cyanoacrylate adhesive, especially the alpha-cyanoacrylate low-alkyl ester adhesive, can be remarkably improved through the synergistic effect of the anhydride compound and the gallic acid or the alkyl ester derivative of the gallic acid, the surfaces of glue drops are smooth and bright. The composition provided by the invention can play dual effects of enhancement and low whitening, significantly improves the quality of alpha-cyanoacrylate adhesives, and has broad application prospects.

The invention relates to a heat dissipation device and a light source assembly with same, which comprises a base, a light source installation base, a heat dissipation mechanism, a driving mechanism and a light source, the light source installation base and the driving mechanism are both connected with the base, the driving mechanism is in transmission connection with the light source installation base, the driving mechanism is used for driving the light source mounting seat to rotate relative to the base, the heat dissipation mechanism is connected with the base and corresponds to the light source mounting seat, the light source is connected with the light source mounting seat, and the heat dissipation mechanism is used for dissipating heat of a light source mounted on the light source mounting seat; and the heat dissipation device and the light source assembly have the advantages of being reasonable in structure and capable of improving heat dissipation balance of the light source.

Provided is an outer packaging material for a power storage device, which has a heat-fusible resin layer containing polypropylene and polyethylene, and in which whitening and deterioration of insulation properties due to molding are suppressed. The outer packaging material for a power storage device comprises a laminate having at least a base material layer, a barrier layer, and a heat-fusible resin layer in this order from the outside to the inside, and the heat-fusible resin layer contains polypropylene and polyethylene. The sea-island structure can be observed in a cross-sectional image obtained using a scanning electron microscope with respect to a cross-section of the heat-fusible resin layer in the thickness direction in a direction parallel to the TD, the cross-sectional image being obtained by taking the total thickness of the layers located further inward than the barrier layer as 100%, and the total thickness of the layers located further inward than the barrier layer as 100%. In a cross-sectional image obtained from the surface of the thermally fusible resin layer on the opposite side from the barrier layer side to a portion having a thickness of 12.5%, the ratio of the total number of island parts having an area of 0.02 [mu] m2 or less among the island parts in the cross-sectional image is 80.0% or more with respect to the total number of island parts of the sea-island structure.

The invention provides a preparation method of alpha-cyanoacrylic acid low-whitening gel. The preparation method comprises the following steps: firstly, liquefying solid formaldehyde; mixing the liquefied solid formaldehyde with a solvent in a reaction container to obtain a mixture; dropwise adding ethyl cyanoacetate and a catalyst into the mixture, and carrying out polymerization reaction to obtain a reaction system; adding an organic solvent into the reaction system from the bottom of the reaction container, carrying out condensation reflux dehydration, and heating to start vacuum material pulling after the solvent in a reflux condensation pipe and a bottle is completely removed; stirring through a stirring unit after material pulling is completed, distilling and purifying after cracking is completed, and finally obtaining the alpha-cyanoacrylic acid low-whitening glue. According to the scheme, the steam pressure of white smoke during glue polymerization is effectively reduced, so that the whitening phenomenon is greatly reduced.

A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a nonlinear waveguide. The nonlinear waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the nonlinear waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

The invention discloses a superhigh pressure color protection fresh keeping unfreezing method of frozen livestock meat. The unfreezing method comprises the following steps of cutting the frozen livestock meat sold in the market into blocks, immersing the blocks in a 2%-5% calcium lactate solution for 1-10s, taking out the immersed blocks, and performing vacuum packing; putting the frozen livestockmeat after vacuum packing in a superhigh pressure container, enabling warm water of 30-60 DEG C, of which the mass is 2-10 times of that of the frozen meat, to into the container, performing superhigh pressure treatment under the pressure of 100-300MPa for 15-60min, performing unfreezing, and then placing the unfrozen livestock meat in a place of 0-4 DEG C for refrigeration and sales. The color and the quality of the livestock meat obtained by a color protection fresh keeping technique are both close to those of fresh livestock meat, unfrozen livestock meat is free from a recrystallization phenomenon, the unfreezing time is shortened, besides, the supply chain of domestic and foreign superior livestock meat is extended, and the production benefits are increased.

The invention relates to the technical field of α-cyanoacrylate adhesives, and specifically discloses a composition for reducing the whitening phenomenon of adhesives and α-cyanoacrylate adhesives. The composition for reducing the whitening phenomenon of adhesives includes acid anhydride compounds, gallic acid or gallic acid alkyl ester derivatives. In the present invention, acid anhydride compounds and gallic acid or gallic acid alkyl ester derivatives are combined and added to α-cyanoacrylate adhesives, and the synergistic effect of the two can significantly improve the α-cyano The whitening phenomenon of acrylate adhesives, especially low alkyl α-cyanoacrylate adhesives, makes the surface of the glue drop smooth and bright. The composition provided by the invention can exert dual effects of strengthening and low whitening, significantly improve the quality of α-cyanoacrylate adhesives, and has broad application prospects.

The invention relates to a dissolved oxygen sensitive film light sensing device and a fluorescence efficiency detection system; the dissolved oxygen sensitive film light sensing device comprises a light sensing seat; a water inlet and a water outlet are arranged on the light sensing seat, and dissolved oxygen circulating water fills in the light sensing seat; the device also includes: a transparent window that is arranged on the side wall of the light sensing seat, and a light source enters the light sensing seat from the transparent window; and a dissolved oxygen sensitive film that is arranged in the transparent window and is used for receiving the stimulation of the light source and generating excitation fluorescence. The dissolved oxygen concentration state can be accurately adjusted through the dissolved oxygen sensitive film light sensing device, and fluorescence efficiency detection can be achieved; the fluorescence emission efficiency, the optimal excitation wavelength, the maximum emission fluorescence wavelength and the fluorescence lifetime can be obtained through analysis, the light utilization rate is increased, and bleaching of the dissolved oxygen sensitive film is reduced.

The invention discloses a carboxyfluorescein modified kidney clearance type silver nanoparticles, and a preparation method and application thereof. According to the super-stable silver nanoparticle FG-AgNPs prepared by the method, a fluorescent dye (NHS-FAM) is conjugated to the prepared GS-AgNPs to generate a silver-dye conjugate. The synthesized FG-AgNPs are high in synthesis yield and uniform in morphology and has excellent stability and good biocompatibility, meanwhile, the preparation method is simple and convenient, and the raw materials are wide in source. The fluorescence intensity research of the FG-AgNPs and the NHS-FAM in the pH range of 5-10 shows that the pH response range and the sensitivity of the NHS-FAM are improved by combining the FG-AgNPs and the NHS-FAM with the AgNPs. Based on the discovery, the fluorescent nano sensor can be used as a powerful novel probe for detecting the pH value, and is expected to be widely applied to the fields of chemistry, medicine and biology.