35results about How to "Efficient split" patented technology

The invention discloses a large-scale grouping optimizing method of parts based on a feeding characteristic. The large-scale grouping optimizing method of parts comprises the specific steps of: (1) grouping the parts based on the similarity characteristic to obtain different similar part groups, and putting each part into a similar part group; (2) regrouping the parts based on the feed fit characteristic, wherein each regrouped similar part group corresponds to a feed optimizing subproblem; and (3) optimizing and compensating the parts, dynamically compensating the distribution of groups of parts in the optimizing process, and finally combining the optimization results of all the groups to obtain a feeding scheme of the original problem. The large-scale grouping optimizing method of parts can be used for grouping parts adaptively, obtaining reasonable and stable part groups, avoiding influence of a specific clustering algorithm on the grouping result, and alleviating the contradiction of the algorithm between time efficiency and material utilization rate.

The invention provides a parametric modeling design method for a fabricated building, which comprises the following steps of: extracting parameters: splitting each component from a CAD structure construction drawing of the building, representing each different component with different parameters, and extracting parameter information of each component; inputting parameters: storing the parameter information of each component into a database, and inputting the parameter information into UG software to form a three-dimensional model of each component; assembling collision: correspondingly assembling three-dimensional models of a plurality of adjacent components in UG software, and carrying out collision detection and collision adjustment on the components; wherein the three-dimensional modelof the qualified standard component is converted into a two-dimensional drawing; a plurality of standard components are used for jointly forming the fabricated building. By using the method disclosedby the invention, the structure construction drawing of the house can be efficiently split into a plurality of standard components, the two-dimensional drawing of each standard component can be accurately given out in detail, and the material list for production and manufacturing can be accurately calculated as soon as possible.

The invention discloses a discarded bolt and nut splitting device for a building, and a using method. The splitting device comprises a base, a rotary drum, a dismounting and mounting head and a clamping mechanism, and the base is provided with a socket used for placing the bottom of a bolt; the rotary drum is rotatably installed on the base, and can be moved relative to the base up and down; the dismounting and mounting head is directly or indirectly connected to the rotary drum fixedly, and provided with a plug fit with the head shape of the bolt; and the clamping mechanism is installed on the base, and can do reverse or forward motion along with the up-and-down movement of the rotary drum, so that a nut is loosened or clamped. The disassembly device is rational in structure and ingeniousin layout, and through accurate position cooperation and connection relationship among components, the bolt and the nut can be split efficiently.

The present invention relates to a method for combining or for splitting the beam paths of substantially nonpolarized light of at least three different wavelength intervals. The splitting or the combining of the beam path of light of those wavelength intervals located between the other wavelength intervals takes place when the beam paths of the light of the two other wavelength intervals are already or still combined. The present invention also relates to an illumination unit comprising a white light source and utilizing this method by means of interference filters for splitting the white light into red, blue and green light beams. The invention also relates to an illumination unit comprising a red, green and blue light source and utilizing these methods by means of interference filters for the combination of the beam paths of the light sources.

Provided is a water purifying apparatus capable of efficiently producing purified water from raw water. The water purifying apparatus comprises: a casing (11) having a circulation path; a splitter device (15) disposed within the casing (11) and adapted to split raw water into droplets and create a carrier airflow (A1) capable of circulating along the circulation path and carrying water vapor evaporated from the droplets (D1); and a condenser (19) disposed within the casing (11) at a position downstream of the splitter device (15) in a direction of the carrier airflow and adapted to condense the water vapor to create purified water. The splitter device (15) comprises a rotary shaft (15a) extending in an up-down direction of the casing (11), and a blade (152A to 152Q) radially attached to the rotary shaft (15a) and having irregularities (152p, 152q, 152r, 152s, 152t).

The invention belongs to the technical field of polymer film separation, and discloses preparation and application of two chiral triptycene polyimide films. The preparation comprises the steps of (1)carrying out polymerization reaction on a dianhydride monomer compound and optical pure 2,6-diaminotriptycene to obtain two chiral triptycene polyimide; (2) preparing a chiral film by a solvent evaporation method; and (3) separating racemation micromolecules by the chiral film through a racemation film experiment. The preparation has the advantages of low material cost, simple film making method,outstanding chiral separation effect and the like, and has large application prospect in the aspect of chiral resolution and the like.

The invention relates to an application of a chiral aminophenol ligand to asymmetric synthesis of efavirenz. A chiral aminophenol ligand compound is used for inducing asymmetric synthesis of (S)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-1,3-benzoxazine-2-ketone (Efavirenz). The ligand is cheap, easily available, safe and recoverable, is used in asymmetric synthesis of efavirenz, and has the advantages of high yield, good enantioselectivity, simplicity and convenience in operation, capability of realizing industrialized production and good product quality.

The invention relates to a catalyst for splitting racemic epoxyalkane. The catalyst is composed of nitrogen-containing organic alkali or quaternary ammonium salt, and Cr (Salen) [(R,R)/(S,S)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamino chromium (III) chloride], the mole ratio of the organic alkali or quaternary ammonium salt to the Cr (Salen) is 0.1-10; in the process of carrying out asymmetric ring-opening splitting of the racemic epoxyalkane, the splitting conversion rate of the catalyst to epoxyalkane can be greater than 49%, and the ee value of a split product 1-azido-2-trialkyl siloxane can be over 90%. The catalyst mainly solves the problem that previous catalytic racemic epoxyalkane is low in asymmetric ring-opening reaction activity, large in application amount of the catalyst and low in enantioselectivity, realizes the efficient splitting of racemic epoxyalkane, and can obtain high-purity chiral epoxyalkane and trialkyl siloxane.

The invention discloses a method for separating an ofloxacin enantiomer. The method for separating the ofloxacin enantiomer comprises the steps: (1) dissolving an ofloxacin sample to obtain an ofloxacin solution; and (2) separating the ofloxacin enantiomer in the ofloxacin solution by using a simulated moving bed chromatography system, wherein chromatographic conditions are that the chromatographic column is a Chiralcel OD-H chiral column; the fixed phase is silica gel, the surface of which is coated with cellulose-tri[3, 5-xylyl carbamate]; and the mobile phase is a mixed solution containing ethanol, n-hexane and phosphoric acid. The method for separating the ofloxacin enantiomer has the advantages of simple process and stable and reliable product and can be used for industrial mass production.

The invention discloses a preparation method for synthesizing (S)-5-bromo-1, 2, 3, 4-tetrahydro-N-Boc-isoquinoline-1-carboxylic acid, and belongs to the technical field of medical intermediates. The method comprises the following steps: reacting o-bromophenylethylamine serving as a raw material with benzyl chloroformate in an alkaline environment to obtain benzyl o-bromophenylethylamine formate; then carrying out cyclization reaction with glyoxylic acid under the catalysis of acid; then carrying out palladium-carbon catalytic hydrogenation to remove protection, so as to obtain 5-bromo-1, 2, 3, 4-tetrahydroisoquinoline-1-carboxylic acid; finally, obtaining the (S)-5-bromo-1, 2, 3, 4-tetrahydro-N-Boc-isoquinoline-1-carboxylic acid through induced resolution and Boc protection. The method is simple, convenient and stable in process operation, high in yield, environmentally friendly, cheap and easily available in raw materials and beneficial to industrial production.

The invention discloses double-substituted 6-alkyl imidazolium-6-ammonium-beta-cyclodextrin with double positive electricity centers and a preparation method thereof. The structural formula of double-substituted 6-imidazolidinylnio-6-ammonium-beta-cyclodextrin is as shown in the specification. The preparation method comprises the following steps: adding imidazole in 4-methyl-benzene sulfonyl chloride and then reacting with beta-cyclodextrin so as to obtain 6-p-methyl-benzene-sulfonyl-beta-cyclodextrin (Ts-CD) the 6-hydroxyl of which is substituted; reacting Ts-CD with sodium azide so as to obtain 6-azido-beta-cyclodextrin, namely, N3-CD; reacting N3-CD with 2,4,6-trimethyl benzene sulfonyl chloride so as to obtain 6-azido-6-(2,4,6-trimethyl benzene sulfonyl)-beta-cyclodextrin, namely, N3-Mess-CD; reacting N3-Mess-CD with alkyl imidazole so as to obtain double-substituted 6-azido-6-alkyl imidazolium-beta-cyclodextrin, and reducing azido to amino with triphenylphosphine so as to obtain double-substituted 6-amino-6-alkyl imidazolium-beta-cyclodextrin; and carrying out amino hydrochlorination and ion exchange so as to obtain double-substituted 6-alkyl imidazolium-6-ammonium-beta-cyclodextrin with the double positive electricity centers. The obtained cyclodextrin has good water solubility and effective chiral resolution capacity.

The invention discloses a malate dehydrogenase mutant gene and a construction method and application thereof, and belongs to the technical field of biological genetic engineering. The malate dehydrogenase mutant gene is characterized in that streptomyces coelicolor malate dehydrogenase is taken as a template, a gene sequence capable of expressing the malate dehydrogenase is constructed through genetic engineering measures such as primer design, stepwise PCR (polymerase chain reaction), fusion PCR, transformed bacteria resistance screening and nucleotide sequencing, and the constructed malate dehydrogenase is transferred into DE3 strains of escherichia coli to be expressed; the activity of the expressed malate dehydrogenase is two times or above that of malate dehydrogenase under wild-typesample expression, and more efficient resolution and purification enzymes are provided for production of D-malic acid.

The invention relates to a low-code delivery method based on software development, which comprises the following steps: obtaining functional modules of software to be delivered, each functional module comprising at least two functional units, the two functional units being used for aggregating into one functional module, functional units contained in the functional modules are polymerized from other functional modules on the basis of original functions; the storage module is provided with a first storage unit and a second storage unit, the first storage unit is used for storing a first-layer logic relation, and the second storage unit is used for storing a second-layer logic relation; detecting the storage data volume in the first storage unit and the second storage unit; and adjusting the aggregation condition of the functional unit or the functional module during delivery according to the data volume stored in the first storage unit and the second storage unit. According to the method, the functional units and functional module division of the to-be-delivered software are reasonably adjusted, so that the delivery code quantity is greatly reduced during delivery, the delivery efficiency is improved, and the delivery time limit and the delivery period are shortened.

The invention discloses a shaft pulling device used for pulling an airplane anti-icing valve guide shaft. The shaft pulling device comprises a taper pipe barrel (3), a lock nozzle (1), a lock nozzle square-head nut (6), a positioning base (2), two long wrench handles (5), two short wrench handles (5), two L-shaped fastening and positioning blocks (7) and a rotating nut (4). The two L-shaped fastening and positioning blocks (7) are oppositely and symmetrically fixed to the two ends of a waist plate of the positioning base (2) through bases via connecting pieces; the lock nozzle (1) penetrates in the taper pipe barrel (3); the lock nozzle square-head nut (6) is screwed on an outer thread at one end of the lock nozzle (1); and the above parts penetrate a middle large through hole of the waist plate of the positioning base (2) together after being assembled. The positioning base (2) is fixed to a valve shell provided with the airplane anti-icing valve guide shaft.