1074results about How to "high yield" patented technology

A nitride semiconductor device includes: a first nitride semiconductor layer formed of non-doped Al_xGa_1-XN (0≦X<1); a second nitride semiconductor layer formed on the first nitride semiconductor layer of non-doped or n-type Al_YGa_1-YN (0<Y≦1, X<Y), and having a smaller lattice constant than that of the first nitride semiconductor layer; a third nitride semiconductor layer formed on the second nitride semiconductor layer of a non-doped or n-type nitride semiconductor, and having a lattice constant equal to that of the first nitride semiconductor layer; a fourth nitride semiconductor layer formed on the third nitride semiconductor layer of In_WAl_ZGa_1-W-ZN (0<W≦1, 0<Z<1); a gate electrode formed in a recess structure having a bottom face which arrives at the third nitride semiconductor layer; and a source electrode and a drain electrode.

A stacked semiconductor device includes a plurality of semiconductor chips and a conductive path extending through at least one of the semiconductor chips. The semiconductor chips are stacked together. The semiconductor chips are electrically connected by the conductive path, and the conductive path has a plurality of through-connections extending through the corresponding semiconductor chip.

A compound shown by the following formula:wherein each of R1a, R2a, R3a and R4a represents a substituent selected from a non-reactive atom, a non-reactive group, a hydroxyl group and an amino group, and at least two members selected from R1a, R2a, R3a and R4a are a hydroxyl group, a carboxyl group or an amino group; is subjected to an esterification reaction or an amidation reaction with a polymerizable unsaturated compound (e.g., an alcohol, a carboxylic acid, an amine) in the presence of a catalyst comprising an element selected from the Group 3 elements, such as a samarium compound, to obtain a polymerizable adamantane derivative having at least one polymerizable unsaturated group in high yield.

A novel chlorine dioxide production apparatus, or reactor, is disclosed. The reactor receives reactants from two or more feed pipes under pressure, and the reactants react in a reaction chamber that operates under elevated pressure and within a specified temperature range. A gaseous product, such as chlorine dioxide, is generated and is released directly into a liquid stream for bleaching, disinfection, and other purposes. Also disclosed is a novel system for production of quantities of chlorine compounds from commercial grades of starting materials, and methods of using the reactor in situ for bleaching, and for disinfection, decontamination, and sterilization of flows of water or other liquids. An automated system for multiple points of addition of chlorine dioxide to a flow to be treated is also disclosed.

The invention provides process for oxidative dehydrogenation of lower alkanes, by vapor phase oxidative dehydrogenation of C2-C5 lower alkanes in the presence of a catalyst and molecular oxygen to produce the corresponding olefins, in which the catalyst has a composition expressed by a general formula (1) below:in which A is at least one metal selected from the group consisting of molybdenum and chromium; Sb is antimony; W is tungsten; O is oxygen; and D is at least one metal selected from the group consisting of V, Nb, Ta, Fe, Co, Ni, Cu, Ag, Zn, B, Tl, Sn, Pb, Te, Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, La, Ce and Sm; alpha, beta, gamma, delta and x denote atomic numbers of A, Sb, W, D and O, respectively, where when alpha=1, beta=0.5-10, gamma=0.1-10 and delta=0-3; and x is a numerical value determined by the state of oxidation of those elements other than oxygen.When these catalysts are used in reactions for oxidizing and dehydrogenating C2-C5 alkanes with molecular oxygen in vapor phase, corresponding olefins can be produced at high yield.

The present invention belongs to the technology field for preparing cyclocompound, specific as preparation method of glycolide. The method synthesizes high purity and high productivity glycolide crystal with high-purity glycolic acid crystal as raw material through a series of steps including dewatering polycondensation, melting polycondensation, depolymerization reaction and recrystallization purifying etc. The present invention prepares glycolide through depolymerizing polyglycolic acid oligomer which is prepared by polycondensating glycolic acid in presence of coexistent two catalysts, and purify primary product of glycolide through controlling recrystallization of glycolide by dropping low boiling point solvent at appropriate temperature.The method guarantee the high conversion rate of polyglycolic acid oligomer in depolymerization procedure and stability of crystal formation of glycolide in procedure of recrystallization, and can increase productivity of glycolide.

A photolithography process for forming an island-shaped semiconductor layer is omitted, and a transistor is formed by at least two photolithography processes: a photolithography process for forming a gate electrode (including a wiring or the like formed from the same layer as the gate electrode) and a photolithography process for forming a source electrode and a drain electrode (including a wiring or the like formed from the same layer as the source electrode and the drain electrode). By using electron beam exposure, a transistor in which a distance between the source electrode and the drain electrode (channel length) is short can be formed. For example, a transistor whose channel length is less than 50 nm can be obtained.

A processing of a first slaughter product to form a second slaughter product comprises: providing one or more processing stations, a parameter of a processing to be carried out in the processing stations being adjustable; collecting and storing data indicating the availability of the processing stations; collecting and storing data which indicate the availability of the first and/or second slaughter product; collecting and storing properties of the first and/or second slaughter product; storing relationships between the parameter of the processing and the properties of the first and/or second slaughter product. The processing of the first slaughter product to form the second slaughter product is controlled by adjusting the parameter of the processing on the basis of said data, properties and/or relationships, such that an additional added value is obtained during the processing of the first slaughter product to form the second slaughter product.

An air packing bag of plastic for shipping or storing goods is disclosed. The bag includes upper and lower sheets, a valve mechanism including upper and lower films and an intermediate heat-proof member, parallel bladders formed by the upper and the lower sheets, the bladders being perpendicular to the valve mechanism, seals each formed between two adjacent bladders, an air passage formed across the bladders for being in communication therewith, the air passage being adjacent the valve mechanism and having an air valve at one end, and coupling points formed on the upper sheet adjacent the air passage. Pressure inside the inflated bladders pushes both the upper and the lower films to urge against an inner surface of the upper sheet for blocking air from leaving the bladders.

A dry process based capacitor and method for making a self-supporting dry adhesive electrode film for use therein is disclosed.

Improved proteinoid carriers and methods for their preparation and use as oral delivery systems for pharmaceutical agents are described. The proteinoid carriers are soluble within selected pH ranges within the gastrointestinal tract and display enhanced stability towards at least one of photolysis or decomposition over time. The proteinoid carriers are prepared from proteinoids having between 2 and 20 amino acids and having a molecular weight of between about 250 and 2400 daltons.

The present invention provides a method for producing a phenylalanine derivative(s) having a quinazolinedione ring of formula (5), including steps comprising of reacting an acylphenylalanine derivative(s) of formula (1) with a carbonyl group-introducing reagent(s) and a derivative(s) of anthranilic acid to form an asymmetric urea intermediate(s); making the asymmetric urea intermediate(s) into a quinazolinedione compound(s) of formula (4) in the presence of a base(s); and

N-alkylating quinazolinedione ring amide of the obtained quinazolinedione compounds with N-alkylation agents. This production method is an industrially applicable method for producing phenylalanine derivatives having a quinazolinedione skeleton, which are compounds highly useful as drugs having α 4 integrin inhibiting activity. In the formulae (1) and (5), R1 represents a phenyl group having a substituent(s) and the like, R2 represents an alkyl group and the like, R3 represents a dialkylamino group and the like, and R4 represents an alkyl group and the like.

This invention relates to a method of producing multi-walled carbon nanotubes (MWNT) by catalytic decomposition of gaseous carbon-containing compounds over a transition metal-based catalyst. The catalyst comprises A-B and a support, wherein A is selected from the group VIII transition metal elements and B is selected from the Group VIB transition metal elements. An additional aspect of this invention includes a method of preparing hydrogen gas.

Disclosed is that by oligomerizing C₄ olefins over a uni-dimensional 10-ring pore structured zeolite catalyst, at least 70 wt % oligomers having at least 9 carbons can be produced in a single pass.

The invention discloses a preparation method of lube base oil. The preparation method comprises the following steps: enabling raw material oil to be in contact with at least two isomerization catalysts respectively comprising a molecular sieve and VIII family noble metal in a reactor and performing hydroisomerization reaction to obtain the lube base oil; according to the flowing direction of the raw material oil, the at least two isomerization catalysts in the reactor are set as that the diameter of the isomerization catalyst positioned at the downstream is greater than that of the isomerization catalyst positioned at the upstream. The preparation method disclosed by the invention is adopted for preparing the lube base oil, so that the yield of the lube base oil can be improved; meanwhile, the pour point of the lube base oil is reduced, and the viscosity index of the lube base oil is improved.

An object is to provide a higher-performance and higher-reliability memory device and a semiconductor device provided with the memory device at low cost and with high yield. A semiconductor device of the invention has a memory element including an insulating layer and an organic compound layer between first and second conductive layers. When melting, an organic compound of the organic compound layer aggregates due to surface tension of the organic compound. By applying a voltage to the first and second conductive layers, writing to the memory element is carried out.

The invention belongs to the technical fields of inorganic material chemistry and new energy, and discloses a method for preparing porous carbon spheres doped with nitrogen and phosphorus and an application. Water serves as a solvent, polyphosphazenes microspheres and activating agents are mixed in a mass ratio of (0.2-2):1, concentration of the polyphosphazenes microspheres is maintained at a level of 10-30wt%, stirring is performed completely, the mixture of the polyphosphazenes microspheres and the activating agents is obtained through centrifugal separation, the mixture of the polyphosphazenes microspheres and the activating agents is subjected to carbonization, and finally the porous carbon spheres doped with the nitrogen and the phosphorus are obtained. The activating agents are potassium hydroxide, sodium hydroxide, calcium chloride or zinc chloride. The polyphosphazenes microspheres serve as a carbon precursor in the method, are synthesized directly under the room temperature condition, and has a simple art process and high productivity. Simultaneously, the activating agents are used for processing polyphosphazenes so as to improve specific surface areas and pore structures of the porous carbon spheres greatly and be beneficial to improve hydrogen storage capacity.

According to the invention, there is provided a novel soybean variety designated 94B74. This invention thus relates to the seeds of soybean variety 94B74, to the plants of soybean 94B74, to plant parts of soybean variety 94B74 and to methods for producing a soybean plant produced by crossing plants of the soybean variety 94B74 with another soybean plant, using 94B74 as either the male or the female parent.

The invention discloses a synthesis method of a polymethacrylate pour point depressant. The method comprises the following steps: (1) synthesizing hexadecyl methacrylate; (2) synthesizing a polymer, proportioning and adding the hexadecyl methacrylate, styrene and maleic anhydride in a ratio of (2-10):(1-5):(1-5) into a three-mouth flask filled with magnetite, by taking toluene as a solvent, adding an initiator benzoyl peroxide, and heating for completely dissolving the reactants, starting to stir, according to the difference of carbon numbers of polycarbonates, maintaining the internal temperature of the three-mouth flask at 65-90 DEG C, and carrying out reaction for 4-8 h; and (3) removing toluene by reduced pressure distillation. The method disclosed by the invention achieves the beneficial effects that the polymethacrylate pour point depressant synthesized by using the method is high in purity, high in yield, and good in pour point depressing effect; and the selection scope of the pour point depressant to base oil is expanded, and the low-temperature fluidity of lubricating oil can be improved well.

A semiconductor device with high productivity and high yield is provided. The semiconductor device includes a word line, a capacitor line, a first bit line, a second bit line, and a first transistor and a second transistor each of which includes a gate, a source, and a drain. The first transistor and the second transistor at least partly overlap with each other, and the gates of the first transistor and the second transistor are connected to the word line. A capacitor is formed between at least part of the capacitor line and each of the drains of the first transistor and the second transistor. The first bit line is connected to the source of the first transistor, and the second bit line is connected to the source of the second transistor.

Provided is a device for assaying one or more analytes, said device comprising an electrode, a means for optical detection; and a means for electrochemical detection, wherein the device is configured such that the electrode is capable of promoting transport of an analyte when a field is applied to the analyte via the electrode, and wherein the means for electrochemical detection employs the electrode and the means for optical detection employs the electrode, and wherein the device is configured to carry out dielectrophoresis.

Further provided is the use of the device of the present invention for promoting transport of an analyte, detecting the optical properties of the analyte and detecting the electrochemical properties of the analyte.

Also provided is method for assaying one or more analytes, which method comprises the steps of: promoting transport of an analyte, performing an optical measurement of the analyte and performing an electrochemical measurement of the analyte, which method employs the device of the present invention.

The invention discloses a tissue culture method of ginseng adventitious root, comprising the steps of induction, amplification and successive transfer culture of ginseng callus; the induced callus is inoculated on the prepared solid culture medium and added with plant growth regulator to be cultured for 3-4 weeks under the conditions of sterility, the temperature of 23-25 DEG C and keeping in dark place; the amplified callus is inoculated on the prepared solid culture medium and added with proper plant growth regulator to be cultured for 3-5 weeks under the conditions of sterility, the temperature of 23-25 DEG C and keeping in dark place, and then the adventitious root can be formed; the formed adventitious root is picked out and inoculated on the prepared liquid culture medium and added with the plant growth regulator to be cultured for 4-5 weeks under the conditions of sterility, room temperature and sunshine. The method has higher actual significance than ginseng cell cultivation, and the growth speed of the adventitious root is much higher than that of the original root; furthermore, the production rate of active secondary metabolite of the adventitious root is high and stabler and is not influenced by natural environment such as natural disaster and the like; the tissue culture method also has the characteristics of simple technique process, high inductivity, good repeatability, rapid propagation of the adventitious root, etc.

The invention is the inorganic metal nanometer material technology domain, specifically involves through the liquid phase reaction to synthesize silver nanometer method. Mainly includes taking quaternary ammonium-the positive ion Gemini surface active agent as the template medicinal preparation, take six methylene butylamine as the reducing agent, prepared the high major axis ratio through the hydrothermal synthesis method, the sliver nanometer role with homogeneous diameter. Advantages: cost is low, good crystallizing, production rate is higher.

An inexpensive and reliable dry process based capacitor and method for making a self-supporting dry electrode film for use therein is disclosed. Also disclosed in an exemplary process for manufacturing an electrode for use in an energy storage device product, the process comprising: supplying dry carbon particles; supplying dry binder; dry mixing the dry carbon particles and dry binder; and dry fibrillizing the dry binder to create a matrix within which to support the dry carbon particles as dry material.

The invention relates to a nakedflower beautyberry extract as well as a preparation method, a preparation and an application thereof. The nakedflower beautyberry extract is an extract which is extracted from nakedflower beautyberry leaves and contains a nakedflower beautyberry total flavonoid compound and a tannide class compound. The extract is obtained by the steps of extracting the nakedflower beautyberry leaves by water, diluted alcohol or diluted ketone and carrying out macroporous adsorptive resin column chromatography purification on an extracting solution after being concentrated. The nakedflower beautyberry extract has high purity and has the functions of bacteriostasis, hemostasis, pain relieving and convergence.

The method of raising liquid yield during delayed coking is to add one kind of low-boiling point evaporant capable of shortening the setting period of distillate oil in coking tower, and reducing the possibility of secondary cracking and re-condensation of hydrocarbon to form coke. The evaporatn may be gasoline, hydrogenated coked gasoline, organic alcohol, gaseous hydrocatbon or their mixture; and may be added into the fed material before coking tower, into the distillate oil in the back of coking tower and/or into the coking tower. The present invention can raise liquid yield by 2-8% and lower coke yield by over 2%.

The present invention, method of producing polysilicon with mixed source of trichloro-hydro silicon and silicon tetrachloride, is one completely new hydrogen reduction process of producing polysilicon. The trichloro-hydro silicon and silicon tetrachloride is first refined and purified to 9-10 nines under protective dry inert gas of 0.5-0.8 atm and the hydrogen is also refined to 5-6 nines. The material is then sprayed into hydrogen reduction furance is certain flow rate to result in silicon converting rate of 0.08% and H/Cl ratio of 0.15% of the reduction temperature is controlled in 1145-1155 deg.c, so that polysilicon is produced on the silicon rod inside the furnace. SiC14 and HCl produced in the production process is utilized fully and this results in high quality, high yield, low material consumption and low cost.

The invention relates to a reaction unit for preparing low-carbon olefins, mainly solving the problem of low yield of low-carbon olefins in the prior art. The reaction unit mainly comprises a rapid fluidized bed reaction zone 2, a rough-cut cyclone 4, a disengager 21, a gas-solid distribution zone 7, a downer reaction zone 9, a regenerator 11, and a riser reaction zone 20, wherein the outlet of the riser reaction zone 20 is connected with the disengager 21, the bottom of the disengager is connected with the regenerator 11 through a regeneration standpipe 26, the regenerator 11 is provided with two catalyst outlets, one catalyst outlet is connected with the riser reaction zone 20, the other catalyst outlet is connected with the downer reaction zone 9, the outlet of the downer reaction zone 9 is connected with the rapid fluidized bed reaction zone 2, the outlet of the rapid fluidized bed reaction zone 2 is connected with the rough-cut cyclone 4, a gas-phase outlet pipeline 5 of the rough-cut cyclone 4 is connected with the disengager 21, the dipleg of the rough-cut cyclone 4 is connected with the gas-solid distribution zone 7, and the gas-solid distribution zone 7 is connected with the downer reaction zone 9. The reaction unit disclosed herein well solves the problems and can be used in the industrial production of low-carbon olefins.

The invention relates to a preparation technique of a medicine alogliptin benzoate for treating Type 2 diabetes. The technique comprises the following steps: reacting the raw material 6-chloro-3-methyluracil with 2-cyanobenzyl bromide to prepare 2-(6-chloro-3-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidyl-ylmethyl)-benzonitrile, and carrying out substitution reaction with (R)-3-Boc-aminopiperidine; after the reaction finishes, removing Boc to obtain alogliptin; and finally, salifying with benzoic acid to obtain the alogliptin benzoate. The invention is characterized in that in the substitution reaction, the acid binding agent potassium carbonate is added; and after the reaction finishes, filtration is carried out, and p-toluenesulfonic acid is added into the filtrate to remove the Boc. The preparation technique provided by the invention has the advantages of simple procedure, higher product yield and higher product purity.

It is an object to provide an element structure in which defects are not easily generated and a semiconductor device that has the element. An element has a structure in which a layer containing an organic compound is interposed between a pair of electrode layers of a first electrode layer and a second electrode layer. At least one of the pair of the electrode layers has a Young's modulus of 7.5×10¹⁰ N/m² or less. A layer containing an organic compound is formed using an organic compound appropriate to usage of an element to be formed, and a memory element, a light-emitting element, a piezoelectric element, or an organic transistor element is formed.