42 results about "Blue green colour" patented technology

There is provided a white light illumination system including a radiation source, a first luminescent material having a peak emission wavelength of about 570 to about 620 nm, and a second luminescent material having a peak emission wavelength of about 480 to about 500 nm, which is different from the first luminescent material. The LED may be a UV LED and the luminescent materials may be a blend of two phosphors. The first phosphor may be an orange emitting Eu2+, Mn2+ doped strontium pyrophosphate, (Sr0.8Eu0.1Mn0.1)2P2O7. The second phosphor may be a blue-green emitting Eu2+ doped SAE, (Sr0.90-0.99 Eu0.01-0.1)4Al14O25. A human observer perceives the combination of the orange and the blue-green phosphor emissions as white light.

A white beam with high color-rendering index is formed by uniting a collimated red beam and a collimated blue-green beam, the latter having as its source a blue LED with a green phosphor. The white beam is formed by a prism with an amber low-pass dichroic filter. The prism cross-section can be either a square or an equilateral triangle. The triangular prism can have one third of its mass reduced by stepped facets. Both types of prism can be elongated to accommodate multiple collimators. Switching between white, red, and blue-green allows application to police vehicles.

There is provided a white light illumination system including a radiation source, a first luminescent material having a peak emission wavelength of about 570 to about 620 nm, and a second luminescent material having a peak emission wavelength of about 480 to about 500 nm, which is different from the first luminescent material. The LED may be a UV LED and the luminescent materials may be a blend of two phosphors. The first phosphor may be an orange emitting Eu2+, Mn2+ doped strontium pyrophosphate, (Sr0.8Eu0.1Mn0.1)2P2O7. The second phosphor may be a blue-green emitting Eu2+ doped SAE, (Sr0.90-0.99 Eu0.01-0.1)4Al14O25. A human observer perceives the combination of the orange and the blue-green phosphor emissions as white light.

A blue-green colored glass composition includes a base portion, such as a conventional soda-lime-silica base, and major colorants. In one embodiment, the major colorants include 0.7 to 0.9 weight percent total iron (Fe2O3), 0.2 to 0.3 weight percent FeO, and 0 to 5 ppm CoO. The glass is characterized by a dominant wavelength in the range of 490 nm to 495 nm and an excitation purity in the range of 3% to 11%. The glass of the invention can be essentially free of Se.

The invention discloses a blue green or light blue particle-shaped ferrous sulphate heptahydrate and manufacturing method and equipment with diameter at 1-8mm, which comprises the following steps: washing ferrous sulphate heptahydrate in the cleaning pond to remove surface impurity; filtering; drying; obtaining pure ferrous sulphate heptahydrate; drying; punching to obtain the piece with thickness at 2-10mm; breaking; separating through vibrating sieve; collecting 2-60 order particle; packing; blending dried piece and ferrous sulphate heptahydrate to punch again.

The invention relates to a blue-green silicate long afterglow luminescent material and a preparation method thereof. The chemical expression of the luminescent material is Ba0.9975Si2O5:Eu0.0025, Rx,wherein R is one or two of Dy, Pr, Ce, Nd, Tm, Sm, Yb, Gd, Er, Tb or Ho, and x is more than or equal to 0.005 and less than or equal to 0.050. The preparation method comprises the steps of respectively weighing raw materials according to a stoichiometric ratio, grinding the weighed raw materials, and evenly mixing to obtain raw material powder; carrying out calcination, cooling, and then grindingto obtain the ultra-long blue-green silicate long afterglow luminescent material. According to the preparation method, Eu<2+> is used as activation ions, one or two of trivalent rare earth ions such as Dy<3+> and Nd<3+> are used as co-activation ions, a co-solvent is not added, and calcinations is carried out at low temperature; the luminescent material prepared by the method can emit blue-green ultra-long afterglow after being excited by light with a wavelength of 200-400 nm. The blue-green silicate long afterglow luminescent material has the advantages of being simple, free from pollution, energy-saving and low in cost.

The invention relates to a testing agent for detecting ammonia nitrogen in water. The testing agent comprises A, B two packages, wherein the A is packaged by grinding and mixing sodium tartrate, natrium salicylicum, citric acid trisodium and nipride; the B is packaged by grinding and mixing sodium-hydroxide, lithium hydrate, citric acid trisodium, babysafe, symclosene and symclosene. When use the testing agent, adding a pack of A into sample water, adding a pack of B after placing 2 minutes, the water will display blue-green color if there's ammonia nitrogen in the water, and the darkness of the color is in proportion to the concentration of the ammonia nitrogen; placing 10 minutes, comparing it with the standard color matching card, color matching disc to read the concentration of the ammonia nitrogen in the water.

The invention provides a liquid ejecting apparatus. A first head unit has: a first portion; a second portion connected to the first portion on a first side in the first direction and having a shorterwidth in the second direction than the first portion; and a third portion connected to the first portion on a second side in the first direction, having a shorter width in the second direction, and provided at a position different from the second portion in the second direction. A second head unit has: a fourth portion; a fifth portion connected to the fourth portion on the first side and having ashorter width in the second direction; and a sixth portion connected to the fourth portion on the second side, having a shorter width in the second direction than the fourth portion, and provided ata position different from the fifth portion in the second direction, a portion of the first head, a portion of the second head, a portion of the third head, and a portion of the fourth head being located on the second portion, the third portion, the fifth portion, and the sixth portion, respectively, wherein the first color is blue green and the third color is magenta.

The invention relates to the production technology of spirulina and aims to provide a method for screening linear spirulina filaments by using triclosan. Including: take an appropriate amount of spirulina algae liquid with both spiral and linear algal filaments, dilute its turbidity T to 0.2 with Zarrouk's culture medium; divide the diluted algae liquid into multiple parts, add Dilute the turbidity T of the algae solution to 0.1 in the Zarrouk culture solution containing gradient concentrations of triclosan; after 70 days of standing culture, select the blue-green algae solution, and take the group with the highest concentration of triclosan, and the other group The algae filaments in the algae liquid are all linear algae filaments. The present invention screens linear algae filaments based on the difference in susceptibility of different algae filaments to triclosan. Compared with the traditional separation and cultivation method of algae filaments, the present invention is not only simple, efficient, but also low in cost, and can realize batch, automation, and high-throughput Quantity screening. The method can provide the required linear spirulina filaments for further research on the internal mechanism and influencing factors of the straightening of the spirulina filaments.

The invention discloses a method for observing the repairing condition of microbial self-repairing concrete cracks, which comprises the following steps: preparing a microbial self-repairing concrete specimen containing cracks; adding copper sulfate pentahydrate solution to the cracks of the specimen, and then keeping the specimen Let it stand for more than two days, and dry it in vacuum; split the dried microbial self-repairing concrete specimen from the crack, and the blue-green material at the crack split is the position where the microorganism produces calcium carbonate through mineralization and deposition. This method can significantly improve the color distinction between microbial deposition of calcium carbonate and concrete matrix, clearly and accurately display the distribution of calcium carbonate produced by microbial mineralization deposition in the crack area of ​​microbial self-healing concrete, so that the microbiological self-healing concrete cracks can be directly observed by naked eyes The location of calcium carbonate deposition clearly shows the effect of microbial mineralization deposition on repairing cracks.

The invention discloses a formula for preparing blue-green wheat straw dye and a production method thereof. The dye is mainly composed of blue grass, an antimony ion solution, nettle, alum, an iron ion compound solution, and mineral water. The main procedure of dyed wheat straw production comprises the following steps: material choosing, material cutting, drying, soaking, boiling, mixing, precipitating, dyeing, and finishing. The dye is prepared from pure natural plants, is natural, pollution-free, green, and environment-friendly, and does not have any side or toxic effect to human body.

The invention discloses a synthesis method of a C3N4 quantum dot room-temperature phosphorescent material and a product and application thereof. The synthesis method comprises the following steps of:taking urea or other urea-like small molecules as raw materials and carrying out a high-temperature solid-phase reaction in a high-pressure reaction kettle to obtain a product which is grey white powder, has solid-phase fluorescence and can continuously emit macroscopic blue-green phosphorescence for 3-6 seconds at room temperature. The preparation method is simple, and the product contains no harmful metal and is a novel room-temperature phosphorescent material; and the C3N4 quantum dot room-temperature phosphorescent material has potential application value in the fields of 3D printing, anti-counterfeiting, decoration, imaging and the like.

The invention discloses an abalone shell pigment and a preparation method thereof. An abalone shell is adopted as a raw material, an algae pigment at the outer layer of the abalone shell is extracted by adopting an acid solution, and the abalone shell pigment is processed in decalcifying, purifying and precipitating manners. The abalone shell pigment has the characteristics of acid solubility, alkali insolubility, water insolubility and hydrophilic organic solvent insolubility. E490<1%>1cm of a blue-green pigment is greater than or equal to 75, E600<1%>1cm of a reddish-brown pigment is greater than or equal to 50, the calcium content is smaller than or equal to 2.5%, the total nitrogen is smaller than or equal to 7.5%, and the total sugar is smaller than or equal to 5.0%. The abalone shell pigment can be efficiently extracted under the conditions of room temperature, low acid concentration and short time, active ingredients of the abalone shell pigment are reserved to the maximal extent by the processing procedures of purifying, precipitating, washing, drying and the like; the abalone shell pigment is novel in conception, abundant in raw materials, high in production efficiency, low in preparation cost, simple in technology, green and environment-friendly, convenient to implement, and great in generalization performance, and a new path is found out for high-valued utilization of the abalone shell.