1500results about How to "Low purity" patented technology

An object is to provide an organometallic complex that can emit red light. Another object is to provide an organometallic complex having high emission efficiency. Still another object is to provide an organometallic complex that can emit red light with high luminous efficiency. The present invention provides an organometallic complex having a structure represented by the following general formula (G1′).In the formula, Ar represents an aryl group having 6 to 25 carbon atoms; R1 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an alkoxy group having 1 to 4 carbon atoms; R2 to R8 each represent any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, and a halogen group; at least one of pairs R3 and R4, R4 and R5, and R5 and R6 may be bound to each other to form a ring; and M represents a central metal of Group 9 elements and Group 10 elements.

A method for obtaining a fermentation product from a sugar hydrolysate obtained from a feedstock containing hemicellulose, by (i) removing suspended fiber solids from said sugar hydrolysate to obtain a clarified sugar solution; (ii) fermenting xylose in the clarified sugar solution in a fermentation reaction with yeast to produce a fermentation broth comprising the fermentation product; (iii) separating the yeast from the fermentation broth to produce a yeast slurry; (vi) treating the yeast slurry thus obtained with an oxidant to kill microbial contaminants, thereby an oxidant-treated yeast slurry; (v) re-introducing at least a portion of the oxidant-treated yeast back to step (ii) to increase the concentration of yeast in said fermentation reaction; and (vi) recovering the fermentation product.

Processes are disclosed for removing sulfur, including cyclic and polycyclic organic sulfur components such as thiophenes and benzothiophenes, from a hydrocarbon feedstock including fuels and fuel components. The feedstock is contacted with a regenerable sorbent material capable of selectively adsorbing the sulfur compounds present in the hydrocarbon feedstock in the absence of a hydrodesulfurization catalyst. In one embodiment, the sorbent can be an active metal oxide sulfur sorbent in combination with a refractory inorganic oxide cracking catalyst support. In another embodiment, the sorbent can be a metal-substituted refractory inorganic oxide cracking catalyst wherein the metal is a metal which is capable in its oxide form, of adsorption of reduced sulfur compounds by conversion of the metal oxide to a metal sulfide. The processes are preferably carried out in a transport bed reactor.

A substantially oxygen-free and nitrogen-free plasma ashing process for removing photoresist in the presence of a low k material from a semiconductor substrate includes forming reactive species by exposing a plasma gas composition to an energy source to form plasma. The plasma gas composition is substantially free from oxygen-bearing and nitrogen-bearing gases. The plasma selectively removes the photoresist from the underlying substrate containing low k material by exposing the photoresist to substantially oxygen and nitrogen free reactive species. The process can be used with carbon containing low k dielectric materials.

A filter apparatus comprises a filter having first and second opposed surfaces. A first reservoir is positioned adjacent with the first surface and in communication with the first surface, and a first inlet-outlet port is in communication with the first reservoir and spaced from the first surface. A second reservoir is positioned adjacent the second surface, and in communication with the second surface, and a second inlet-outlet port is in communication with the second reservoir and spaced from the second surface. A filter plate system comprises a reservoir plate. The reservoir plate comprises at least one reservoir well. The filter plate system further comprises a strainer plate. The strainer plate comprises at least one strainer well, which is removably receivable in the reservoir well. The strainer well comprises at least one mesh wall portion.

The invention relates to the technical field of polypeptide synthesis, in particular to a preparation method of semaglutide. The preparation method comprises the following specific steps: A) synthesizing a pentapeptide fragment (compound I) by a liquid phase method; B) in the presence of an activator system, coupling a solid-phase resin carrier and FmoC-Gly-OH to obtain FmoC-Gly-resin; C) by a solid-phase synthesis method, sequentially coupling amino acids with FmoC protections at N terminals and side chain protections according to a peptide sequence of a main chain of the semaglutide, wherein the lysine is the pentapeptide fragment (compound I); D) cracking, purifying and freeze-drying peptide resin to obtain the semaglutide. The invention provides a synthesis process of the semaglutide, which is short in synthesis period, low in cost and high in yield and is suitable for mass production.

The invention provides permeable magnetically responsive filtration membranes that include a filtration membrane polymer base suitable for fluid filtration; hydrophilic polymers conjugated to the surface of the filtration membrane polymer; and magnetic nanoparticles affixed to the ends of a plurality of the hydrophilic polymers, wherein the hydrophilic polymers are movable with respect to the surface of the filtration membrane polymer surface in the presence of an oscillating magnetic field.

Disclosed are compositions and methods for preventing, inhibiting, reducing and treating conditions and diseases associated with abnormal bone resorption in mammals, including for example osteoporosis. Embodiments of compositions of the invention comprise a pharmaceutically effective amount of alendronate and vitamin D3 suitable for once-weekly dosing. Compositions and methods of the invention provide vitamin D nutrition during bisphosphonate treatment to facilitate normal bone formation and mineralization while minimizing the occurrence of or potential for the complications associated with vitamin D insufficiency, such as hypocalcaemia and osteomalacia. Also disclosed are methods for manufacturing compositions of the present invention, for measuring stability and degradation of those compositions, and for measuring blood plasma levels of vitamin D.

Oral medicament delivery system comprising a pharmaceutical composition comprising a flexible matrix, said matrix formed of a plurality of fibers comprising a collagen-based carrier and a medicament, the composition orally dissolvable to deliver a unit dose of the medicament to a patient. The flexible composition can be dose titrated and co-administered with a second pharmaceutical formulation.

The invention provides a method and a device for treating fluorine-containing waste water. In the method, a solid-liquid fluidized bed is used as a crystal reactor; a certain amount of calcium fluoride seed crystal is added into the reactor; the fluorine-containing waste water and a calcium-containing precipitator are delivered into a treatment device of the solid-liquid fluidized bed in a reacting ratio to ensure that fluorinions are precipitated on the surface of the calcium fluoride seed crystal; the prepared sand-shaped calcium fluoride precipitated slurry after precipitation is reclaimed; and primarily treated water is subjected to flocculent precipitation further to meet the emission standard. By adopting the method, most fluorinions can be precipitated in the crystallization and precipitating process in the fluidized bed, the generated sand-shaped calcium fluoride has low content of water and high content of calcium fluoride and can be used as fluorine resources for recycling; and in the flocculent precipitating process of the primarily treated water, the consumption of the fluorescent is low, and the yield of slurry is low. Therefore, the comprehensive cost for waste watertreatment is low.

The invention discloses a preparation method of a nano-grade lithium manganese phosphate anode material, comprising the following steps of: preparing a lithium source, a manganese source, a phosphorus source and a doping element compound into a solution in a mol ratio of Li: Mn: P: the doping element of (0.9-1): (0.9-1): (0.9-1): (0-0.1); adding a complexing agent and adding a carbon source into the solution to obtain a uniform colloid; drying the colloid to obtain precursor powder; heating the precursor powder under a protective atmosphere to obtain nano powder; and sintering the nano powder under a protective atmosphere to obtain the nano-grade lithium manganese phosphate anode material. The method belongs to one of a liquid-phase method; each element is at an ion or molecule state in a synthesizing process and the mixing is more uniform; on the basis of the existing liquid-phase method, the synthesizing time is further shortened, a production process is simplified and the cost is reduced; and the nano grade and the purity of a synthesized product are high, the grain diameter is 10-400 nm and the electrochemical performance is good.

The invention relates to an ammonium polyphosphate and montmorillonite nano compound and a preparation method thereof, which belong to the phosphorous compound preparation, composition, modification and crystalline control field. The method for preparing the nano compound comprises the following steps: montmorillonite is added during the preliminary stage of the process of general preparation of ammonium polyphosphate; ammonia is passed through when the temperature is raised to between 150 and 300 DEG C; heat preservation is performed when the temperature is raised to between 300 and 350 DEG C; and then the ammonium polyphosphate and montmorillonite nano compound are obtained after continuous ammoniation for 30 to 200 minutes. The preparation method controls the purity of an I-type polyphosphoric acid in the product through addition of a specific amount of the montmorillonite; the ammonium polyphosphate completely off a silicate slice of the montmorillonite; and nano-dispersion is formed in the ammonium polyphosphate, and then the ammonium polyphosphate and montmorillonite nano compound is obtained. The nano compound reduces the water solubility of the ammonium polyphosphate, has the function of improving the flame-retardant effect in inflaming retarding of polymer materials, and has the advantages of simple preparation technology and raw materials and low cost.

The invention provides a comprehensive utilization method of corn cob, which effectively separates hemicellulose, lignin and cellulose contained in a reproducible biological resource of corn cob in a reasonable process order at low cost and high efficiency, and makes full use of every type of biomass components, thereby solving the problem of utilization of residue in the biomass refining process of preparing ethanol and butanol by extracting xyio-oligosacchandes and enzymolysis from the corn cob in the prior art, and making reasonable and effective use of main components of biomass contained in the corn cob; particularly, the lignin can substitute partial petrochemical materials to prepare modified high-molecular materials, thereby reducing the cost of high-molecular materials and saving the energy consumption of petrochemical materials to bring great social benefit; in addition, the comprehensive utilization method of corn cob is featured by simple processing technique, easy implementation and favorable effect.

An organic EL device includes light-reflective electrodes; light-transmissive electrodes; organic EL layers that are respectively provided between the light-reflective electrodes and the light-transmissive electrodes to emit a plurality of color light components, the organic EL layer emitting a different color light component in each pixel; and transflective layers that are selectively provide in predetermined color pixels to reflect or transmit light emitted from the organic EL layers, respectively, each transflective layer being opposite to the light-reflective electrode with the organic EL layer interposed therebetween.

A light-emitting element unit which can improve color purity of light emitted from a color filter is provided. A display device with high color purity and high color reproducibility is provided. The light-emitting element unit includes a wiring board, a light-emitting element chip provided over the wiring board, a micro optical resonator provided over the wiring board and at the periphery of the light-emitting element chip, and a phosphor layer covering the light-emitting element chip and the micro optical resonator. The display device includes a display panel having a coloring layer and a backlight module having the light-emitting element unit. Examples of the display panel include: a liquid crystal panel; and a display panel including an opening portion provided over a first substrate, MEMS moving over the opening portion in the lateral direction, and a second substrate provided with a coloring layer in a portion corresponding to the opening portion.

The invention relates to a dabigatran etexilate intermediate, a preparation method for the same and a method for preparing dabigatran etexilate, which belong to the technical field of pharmaceutical chemistry and pharmaceutical engineering. The dabigatran etexilate intermediate is represented as a structural formula (2), so that a preparation process for the dabigatran etexilate is simplified, yield and purity of the dabigatran etexilate are high, reaction temperature is low, expensive dehydrating agent is not needed, and good market prospect is provided.

The present invention relates to a ruthenium carbonyl complex that is represented by the following Formula (1):RuXY(CO)(L)  (1)(in the Formula (1), X and Y, which may be the same or different from each other, represent an anionic ligand and L represents a tridentate aminodiphosphine ligand which has two phosphino groups and a —NH— group), its production method, and a method for production of alcohols by hydrogenation-reduction of ketones, esters, and lactones using the complex as a catalyst.The ruthenium carbonyl complex of the invention has a high catalytic activity and it can be easily prepared and handled.

Belonging to the technical field of heat storage and transfer, the invention provides a ternary nitric acid nano-molten salt heat transfer and storage medium, a preparation method and application thereof. The ternary nitric acid nano-molten salt heat transfer and storage medium contains a ternary nitric acid molten salt system formed by potassium nitrate, sodium nitrate and sodium nitrite. The ternary nitric acid nano-molten salt heat transfer and storage medium is characterized in that it also includes metal oxide nanoparticles and / or non-metal oxide nanoparticles. The nanoparticles are dispersed into the ternary nitric acid molten salt system to undergo compounding so as to form the ternary nitric acid nano-molten salt heat transfer and storage medium. The ternary nitric acid nano-molten salt involved in the invention has a low melting point, an upper limit use temperature up to 600DEG C, good thermal stability, and high heat conductivity, thus being very suitable for the heat storage and transfer system of industrial energy storage and solar-thermal power generation.

Provided are an optically active diazabicyclooctane derivative defined by formula (F) below, which is useful as a pharmaceutical intermediate for β-lactamase inhibitor, and a process for preparing the same.In formula (F) above, R1 represents CO2R, CO2M, or CONH2, wherein R represents a methyl group, a tert-butyl group, an allyl group, a benzyl group, or a 2,5-dioxopyrrolidin-1-yl group, and M represents a hydrogen atom, an inorganic cation, or an organic cation; and R2 represents a benzyl group or an allyl group.

The invention discloses a method for synthesizing a dialkyl phosphinic acid and belongs to the technical field of organic phosphorous compound preparation. The method comprises: mixing sodium hypophosphite and an alpha-alkene according to ratio and pouring the mixture in a closed reaction kettle which has a stirrer and can be heated, wherein the optimal alpha-alkene to sodium hypophosphite molar ratio is 2.2 to 2.7; mixing a low / or medium-temperature radical initiator and a high-temperature radical initiator according to a ratio of 5-0.1:1 and pouring the mixture into a reaction kettle; closing the reaction kettle and stirring the mixture for reaction for 2 to 40 hours at 40 to 200 DEG C; cooling the mixture, opening the reaction kettle, filtering the mixture and transferring a filtrate into a separating funnel and washing the filtrate; and evaporating an obtained organic phrase in a rotary mode to remove unreacted materials and solvents. A product obtained after the steps is the dialkyl phosphinic acid. The dialkyl phosphinic acid can provide a high-efficiency flotation agent or extracting agent used in the fields of ore flotation and metal iron extraction and separation. The method improves reaction rates, simplifies a post treatment process, reduces production costs and improves product purity.

A display device includes: a light source section having multiple light sources to emit light in illumination colors including three primary colors of light; a display section for displaying an image in monochrome color by modulating the light emitted from the light source section; and a display control section for driving the light source section and the display section in a field sequential system. The display control section includes a determining section for determining a degree of white or a degree of complementary color of the light sources on the basis of an amount of lighting of each of the illumination colors of the light sources, a setting section for setting white components or complementary-color components of a color determined by a mixing ratio of the illumination colors, and an allocating section for allocating the set white components or the complementary-color components to the fields.

Improved bulk-solidifying amorphous alloy compositions and methods of making and casting such compositions are provided. The improved bulk-solidifying amorphous alloys are preferably subjected to a superheating treatment and subsequently are cast into articles with high elastic limit. The invention allows use of lower purity raw-materials, and as such effectively reduces the overall cost of the final articles. Furthermore, the invention provides for the casting of new alloys into shapes at lower cooling rates then is possible with the conventional bulk-solidifying amorphous alloys.

A pharmaceutical composition for external use, including: i) luliconazole represented by the following structural formula (1) and / or a salt thereof; and ii) one or two or more selected from N-methyl-2-pyrrolidone, propylene carbonate, and crotamiton.

A process is provided to produce bulk quantities of nanowires in a variety of semiconductor materials. Thin films and droplets of low-melting metals such as gallium, indium, bismuth, and aluminum are used to dissolve and to produce nanowires. The dissolution of solutes can be achieved by using a solid source of solute and low-melting metal, or using a vapor phase source of solute and low-melting metal. The resulting nanowires range in size from 1 nanometer up to 1 micron in diameter and lengths ranging from 1 nanometer to several hundred nanometers or microns. This process does not require the use of metals such as gold and iron in the form of clusters whose size determines the resulting nanowire size. In addition, the process allows for a lower growth temperature, better control over size and size distribution, and better control over the composition and purity of the nanowire produced therefrom.

The invention relates to a method to prepare high-pure iron oxide yellow and iron oxide red by ferrous sulfate as byproduct in titanium white, which comprises: when temperature under 60Deg, refining the material to remove impurity; with oxidant, adjusting pH value of solvent to hydrolyze and remove Ti and co-precipitate to remove metal ion; regulating pH value and feeding air for oxidation at normal temperature; obtaining the products with different reaction conditions. This method is simple, needs low cost and obtains product with high purity.

The present invention provides for a monolith reactor process for the production of syngas from hydrocarbon and oxygen feeds. The syngas is cooled and separated to produce carbon monoxide and hydrogen, and the purification equipment utilized in this separation process recycles tail gas and fuel gas to the syngas feed gas line and recycles methane from the carbon monoxide separation system for feed back to the monolith reactor. This process results in almost complete carbon to carbon monoxide conversion and very high carbon monoxide and hydrogen recoveries.

A polylactic acid formed article and a production process therefor. A resin composition for the formed article comprises polylactic acid having an optical purity of not lower than 90% and a residual lactide amount of 0.1 to 0.6% by mass, and 1 to 25% by mass of a crystal nucleus agent. The formed article is characterized in that a difference (|ΔHm|−|ΔHc|) between the absolute value of a crystal fusion heat amount ΔHm as measured at a heat-up rate of 20° C. / min by means of a differential scanning calorimeter and the absolute value of a heat-up crystallization heat amount ΔHc generated by heat-up crystallization is not lower than 25 J / g, and has a crystallinity of not lower than 35% as determined by X-ray measurement and a crystallization speed of not lower than 0.05 min−1 at 130° C.

The invention relates to an extraction method of spirulina phycocyanin. The method comprises the following steps of: processing spirulina powder suspension by adopting a freeze thaw method and a machine crushing process to obtain spirulina cell disruption liquid; performing fractional salting out to precipitate the spirulina cell disruption liquid with 30 percent ammonium sulfate liquid and 50 percent ammonium sulfate liquid to obtain phycocyanin coarse extract liquid 1; adding PEG 20000 (polyethylene glycol 20000) and NaCl to further precipitate out phycocyanin coarse extract with higher purity; dissolving the phycocyanin coarse extract with phosphate buffer to prepare phycocyanin coarse extract liquid 2; and extracting the phycocyanin coarse extract liquid with PEG 20000 / Na2SO4 aqueous two-water-phase system, and desalting extracted lower phase by dialysis to obtain phycocyanin fine extract liquid, and lyophilizing to prepare a phycocyanin finished product. The method is simple in extraction process and low in cost, and is suitable for intermittent and scale production processing of high-purity and high-yield spirulina phycocyanin finished product. The phycocyanin coarse extract can be stored for a long time, and the phycocyanin finished product which is prepared by further purification has excellent antioxidant free radical scavenging effect and fluorescent strength.

A method for making metal nuggets comprises heating a material containing a metal-oxide-containing substance and a carbonaceous reductant to reduce metal oxide in the material and then further heating the produced metal so as to melt the metal while allowing the metal to separate from a by-product slag component and to form granular iron. A cohesion accelerator for the by-product slag is mixed into the material to produce metal nuggets having a high metal purity, a large diameter, and superior transportation and handling qualities at a high yield and high productivity.