43 results about "Site selective" patented technology

The invention relates to a layered oxide material with high cycle stability and a preparation method and application thereof, the chemical formula of the layered oxide material is LiaNabNixMn (1-x) O2, 0 lt; xlt; 0.90 < = a < = 1, 0 < = b < = 0.1; the preparation method comprises the following steps: preparing a layered oxide precursor NaNi < x > Mn < 1-x > O < 2 >; mixing the precursor with a first lithium source, and then carrying out lattice site Li < + > / Na < + > replacement by at least one of molten salt ion exchange, solid phase ion exchange and liquid phase ion exchange to obtain an intermediate; cleaning the intermediate, performing solid-liquid separation, and drying to obtain a layered oxide material with high cycle stability; the layered oxide material is prepared through lattice site selective Li < + > / Na < + > replacement reaction, so that the obtained material has excellent cycling stability and specific capacity, and the method is simple in process, low in cost and suitable for large-scale production.

The present disclosure provides a detergent additives and methods for preparing a sulfurized alkyl phenate product from polyalphaolefins.

Disclosed herein is a downhole cleaning apparatus and a method of cleaning a wellbore. The downhole cleaning apparatus has a body and a cleaning element coupled to the body. The cleaning element is selectively movable relative to the body from a retracted position to an extended position. When the cleaning element is in the retracted position, the cleaning element is held by retention formations inside the tool that are coupled together. The retention formations can be slidably released from one another to enable the cleaning element to move to the extended position. The force required to slidably release the retention formations exceeds any force encountered upon entry of the apparatus, thereby preventing premature extension of the cleaning element.

A device for qualifying a plurality of specimens comprising a wire and at least one crimped element, and a corresponding method. A device for qualifying a plurality of specimens (14), each comprising a wire (18) and at least one element (20) crimped onto the wire, the device comprising: - a test area (28) forming locations (24) respectively intended to receive the specimens to be tested, - a programmable current source (30), - an electrical circuit (32) for electrically connecting the locations to the current source, the electrical circuit comprising contactors (C1 to C21) adapted to be open or closed and to define, in combination with each other, a plurality of electrical circuit configurations, in particular of a first type, in which: - only one of the locations is selectively electrically connected to the current source, - the others are disconnected from the current source.and - only one of the specimens is intended to be subjected to a current. Figure for the abbreviation: Figure 2,

A flow path switching unit for a dryer that dries material. The flow path switching unit for the dryer includes a body portion, and a flow path guide which partitions an internal space of the body portion so as to selectively form a first flow path of air for drying material and a second flow path of air for dehumidifying outside air based on an arrangement position of the body portion. The flow path switching unit provides the first flow path for guiding the air from a drum of a dryer toward a heat exchanger of the dryer at the first position, and the second flow path for guiding the outside air introduced from the outside of the dryer to the outside at the second position.

The present invention provides a process for Pd(II)-catalyzed site selective β- and γC(sp3)-II arylation of primary aldehydes controlled by transient directing groups.

The present application relates to the technical field of biosynthesis, and specifically discloses a method for selectively hydroxylating 16-position of dehydroabietyl acid based on CYP153 family cytochrome P450 enzyme, which comprises the following steps: plasmid construction, heterologous expression of CYP153A99-RhFRED in Escherichia coli, heterologous expression of opt13 in Escherichia coli, and crude enzyme catalytic conversion reaction. By optimizing the codon bias of the protein sequence of cytochrome monooxygenase in the CYP153 family, the p450 enzyme CYP153A99 with the biological catalytic function of catalyzing the hydroxylation of C16 position of dehydroabietyl acid is obtained, high-site selective oxidation of dehydroabietyl acid is realized, the substrate spectrum and application field of the CYP153 family P450 enzyme are expanded, and a new technical path is provided for the green synthesis of dehydroabietyl acid derivatives.

The present application discloses a method for synthesizing β-ketophosphorus oxide, and relates to the technical field of organic synthesis. The method comprises the following steps: sodium trifluoromethanesulfinate, an aryl phosphorus oxide compound, an aromatic alkyne compound, and a solvent are placed in a reaction vessel and mixed; the mixture is reacted for 12 to 30 hours under air atmosphere, room temperature, and 30-watt blue light irradiation with continuous stirring, and after the reaction is completed, the mixture is washed with water, extracted with ethyl acetate, dried, and concentrated by reduced pressure distillation to remove the solvent to obtain a crude product; the crude product is separated by column chromatography to obtain a target product. The synthesis method provided by the present application has the characteristics of cheap and readily available raw materials, a simple catalytic system, easy separation of the target product, high stereo and position selectivity, simple reaction operation, safety and reliability, and green environmental protection, which are advantages that other methods cannot have at the same time.

The invention relates to a device for qualifying a plurality of specimens (14), each comprising a wire (18) and at least one element (20) crimped onto the wire, the device comprising: - a test zone (28) forming locations (24) intended to receive respective specimens to be tested, - a programmable current source (30), - an electrical circuit (32) for electrically connecting the locations to the current source, the electrical circuit comprising contactors (C1 to C21) configured to be opened or closed and to define, in combination with one another, a plurality of electrical circuit configurations, in particular of a first type, in which: - only one of the locations is selectively electrically connected to the current source, - the others are disconnected from the current source, and - only one of the specimens is intended for a current to pass therethrough.

The invention relates to a method for manufacturing a metal wiring substrate. The present invention addresses the problem of providing a method for manufacturing a metal wiring substrate in which a metal wiring formed on a substrate using a chemically amplified photosensitive composition is covered with an insulating film, and another member can be further provided on the insulating film. The method for manufacturing the metal wiring substrate can suppress oxidation of the metal wiring between the substrate and the insulating film. [Solution] A method for manufacturing a metal wiring substrate, the method comprising: a step for laminating a photosensitive layer formed from a chemically amplified photosensitive composition on a substrate having a metal surface; a step for exposing the photosensitive layer by irradiating the photosensitive layer with active light or radiation in a position-selective manner; a step of developing the exposed photosensitive layer to form a mold for forming a metal wiring by plating; a step for forming a metal wiring by plating the substrate on which the mold is formed; and a step for coating the metal wiring with an insulating film.

The invention belongs to the field of gene engineering, and discloses O-methyltransferase and application thereof. In particular to a novel O-methyltransferase derived from ardisia japonica, a nucleic acid molecule thereof, an expression vector containing the nucleic acid molecule and a host cell containing the vector. The invention also provides a production method of the O-methyltransferase, and an application of the O-methyltransferase or the host cell in position selective catalytic synthesis of bergenin precursor 4-O-methylgallic acid-2-C-beta-D-glucoside and a derivative thereof, and bergenin. According to the O-methyltransferase provided by the invention, bergenin precursor 4-O-methylgallic acid-2-C-beta-D-glucoside, a derivative thereof and bergenin can be efficiently and selectively catalyzed and synthesized in a position manner, and a new method is provided for obtaining the bergenin and the derivative thereof.

To provide light-melt adhesive particles that solve a problem of handling ability or the like in performing position-selective adhesion by using a conventional hotmelt adhesive, and a position-selective adhesion method that allows position-selective adhesion of fine location with excellent handling ability by using the light-melt adhesive particles.SOLUTION: Provided are light-melt adhesive particles having particles of a hotmelt adhesive and a layer of a material having a photothermal conversion function covering the particles, and a position-selective adhesion method having: an adhesive particles arranging process of arranging the light-melt adhesive particles on an adherend 1; an adhesive particles melting process of irradiating the light-melt adhesive particles with light to heat / melt particles of the hotmelt adhesive; a bonding process of bringing the light-melt adhesive particles into contact with an adherend 2 to bond them; and an adhesion process of gradually heating to solidify heated / molten adhesive particles to adhere the adherend 1 and the adherend 2 together.SELECTED DRAWING: Figure 1

The invention relates to a seat member workstation assembly. A method and apparatus, the apparatus including a seat member pedestal including a first substrate and a second substrate. A living hinge couples the second substrate to the first substrate such that the second substrate is movable between a closed position and an expanded workstation position. The magnetic closure selectively retains the second substrate to the first substrate in the closed position.

A site-selective hydration strategy that enables site-selective atomic layer deposition (ALD). ALD is utilized to target specific locations on a crystalline material for deposition.

Methods, apparatuses and systems related to managing deck-specific read levels are described. The apparatus may include a memory array having the memory cells organized into two or more decks. The apparatus can determine a delay between programming the decks. The apparatus can derive and implement the deck-specific read levels by selectively adjusting a base read level with an offset level according to the delay and / or the targeted read location.

The invention discloses a helicene bisphosphite ligand as shown in a formula 1, a preparation method of the helicene bisphosphite ligand, a nickel-based catalyst containing the helicene bisphosphite ligand and a preparation method of the nickel-based catalyst. The ligand compound can be used as a ligand of a homogeneous metal catalyst, and can be used in organic reactions such as hydrocyanation reactions of olefins. A catalyst prepared from the helicene bisphosphite ligand is used for preparing nitrile substances, not only is high in catalytic activity, high in yield and high in stability, but also is high in product position selectivity, so that a linear addition product of anti-Markov addition can be obtained more easily, and the helicene bisphosphite ligand has a wide industrial application prospect. Formula 1

Provided is an anti-impact rotating tongue type storage device. The storage device includes: a box body; a locking mechanism arranged in the box body; and a lock body that selectively cooperates with or separates from the locking mechanism, the lock body includes: a lock shell that remains stationary relative to the locking mechanism in working state; a rotating tongue that selectively cooperates with or separates from the locking mechanism and rotates relative to the lock shell; a blocking assembly that selectively blocks or avoids the rotating tongue within rotation travel of the rotating tongue; an actuating assembly that selectively blocks avoidance of the blocking assembly at first position within avoidance travel of the blocking assembly; and a falling block assembly arranged at second position within the avoidance travel of the blocking assembly, that supplements blocking function of the actuating assembly when the lock shell is subjected to impact force.

A nucleic acid composition for electrochemical detection of cells includes a nucleic acid aptamer that binds to a cell surface CD that binds to a working electrode, immobilizes the cells on the surface of the working electrode, and a nucleic acid chain T that participates in an SPAAC reaction. Through SPAAC reaction, the nucleic acid chain T is combined on the surface of the e-Y-Click modified cell, then the hairpin nucleic acid chain is triggered to carry out self-replication cycle reaction of DNA, electrochemical signal substances are enriched on the surface of the cell, and cell detection is realized by detecting electrochemical signals. According to the composition, the nucleic acid aptamer and the site selective marker of e-Y-Click, the accuracy and high specificity of the method are guaranteed, the sensitivity of the detection method is remarkably improved through the high efficiency of SPAAC reaction, and the individual detection requirements of various cells are met by replacing the nucleic acid aptamer.

There is provided a material transfer system comprising a first reciprocating conveyor which selectively moves material towards a first location, and a second reciprocating conveyor which overlaps with the first reciprocating conveyor, with the second reciprocating conveyor selectively moving material from the first location towards a second location. There is also provided a material transfer system according to another aspect comprising a conduit in fluid communication with an upstream portion of the body of water, and a reciprocating conveyor configured to convey upstream said material in the body of water towards the conduit. There is further provided a reciprocating conveyor configured to promote movement of the material in a first direction and inhibit movement of the material in a second direction, and a conveyor position adjustment assembly configured to selectively move a first end portion of the conveyor relative to a second end portion of the conveyor.

The present invention provides a technique for achieving modification of an antibody, particularly site-selective modification of an antibody. More specifically, the present invention provides a compound or a salt thereof, etc., having an affinity substance for an antibody and a bioorthogonal functional group represented by the following formula (I): A-L-E-B (I) [In the formula, A is an affinity substance for an antibody, L is a divalent group containing a leaving group, E is a divalent group containing an electrophilic group, the electrophilic group being: (i) connected to the above-mentioned leaving group and (ii) having the ability to react with a nucleophilic group in the above-mentioned antibody, B is a bioorthogonal functional group, and the above-mentioned leaving group has the ability to be cleaved and detached from E through the reaction between the above-mentioned nucleophilic group and the above-mentioned electrophilic group.].

The invention relates to an insertion device (10) for a laser-based additive manufacturing system (100) for introducing a filler (16) into a powder bed (12), comprising a fluid device (13) with a liquid reservoir (14) for storing a fluid (15) from a filler (16) absorbed in a carrier fluid, and further comprising an application device (11) for applying the fluid (15) into the powder bed (12) and a control device (18) for controlling the application device (11), wherein the application device (11) can be arranged on a coating device (101) of the laser-based additive manufacturing system (100) and is designed such that the application device (11) applies the fluid (15) to the powder bed (12) in a location-selective manner.Furthermore, the invention relates to an additive manufacturing system (100) for powder bed-based manufacturing of a component and a method for additive manufacturing of a three-dimensional component (110) as well as a three-dimensional component (110) produced by the method.

A combination pressure and open frying apparatus includes at least one selectively closeable frypot and a cover configured to selectively close the frypot. The selectively closeable frypot is configured to operate as a pressure frying platform when the cover is closed and configured to operate as an open frying platform when the cover is open. The apparatus includes a clamping mechanism with a spindle that includes a shaft and a handle that is configured to be selectively mounted to the shaft in a plurality of positions relative to the shaft. The apparatus may also include at least one second frypot that can operate at least as an open frying platform, with a common filtration system for the frypots having a selector valve and a failsafe valve, which prevents flow of cooking medium into at least one selectively closeable frypot when the selectively closeable frypot is pressurized.

The invention discloses a synthesis method of a polysubstituted cyclic amine compound, which comprises the following steps: by taking a cyclic amine compound, a disulfide compound and an amine compound as raw materials, selectively activating sp3-C-H bonds at alpha, beta and gamma sites of cyclic amine under the synergistic catalysis of transition metal and an organic small molecule catalyst to synthesize the polysubstituted cyclic amine compound in one step. The method has the advantages that synthesis steps are simple, operation is easy and convenient, raw materials are non-toxic, low in price and easy to obtain, the synthesis method is good in functional group compatibility, chemical selectivity, atom economy and the like, and compared with a traditional method, the method has obvious advantages in the aspect of achieving multi-site selective C-H bond functionalization. In a word, the complex problem that multi-step operation is needed in an existing method is effectively solved, meanwhile, the concept of step economy is better met, and efficient synthesis method reference and reliable technical support are provided for synthesis of the compounds with wide application value.

The present invention discloses a method for mechanically assisted allylic selective oxidation, which relates to the technical field of selective oxidation of organic compounds. The method comprises the following steps: mixing a metal-ligand complex, a base, 2,2,6,6-tetramethylpiperidine oxide and its derivatives, a solvent and a reaction substrate, and then carrying out a reaction under the action of mechanical external force to achieve allylic selective oxidation and obtain an allylic selectively oxidized product. The present invention adopts an S-Phos / Ag catalytic oxidation system to achieve the construction of a fully hydrocarbon backbone regio- and stereoselective oxidation reaction without the participation of a reducing agent, without using expensive palladium as a catalyst, and avoiding the generation of a large amount of chemical waste. The present invention selects ball milling mechanochemistry to replace the traditional solution system, avoiding the use of a large amount of organic solvents, with less waste discharge, resource conservation, environmental friendliness, high atom utilization rate, and having the characteristics of simple operation, short reaction time and high efficiency, which is beneficial to industrial-scale preparation.

Airflow device (1) for ventilating a motor vehicle, comprising at least one passenger air outlet and at least one flap element (2) for selectively influencing an airflow within the passenger air outlet, wherein the flap element (2) is arranged within a flow cross-section of a flow channel system (5) and divides the flow cross-section into at least two flow paths (25), and wherein the flap element (2) is at least partially flexible and is deformable by means of at least one shape memory element (3) arranged on and / or in the flap element (2). characterized by that at least one shape memory element (3) is arranged on both sides of a central plane (12) of the flap element (2), so that the flap element (2) can be selectively bent in two directions from a rest position and that an airflow in the passenger air intake can be selectively deflected by means of the flap element (2) and that by deformation of the flap element (2) a flow path (25) can be at least partially closed and / or opened, and that the flap element (2) is designed as at least one wall section (32) of the flow channel system (5) and is firmly integrated into a wall of the flow channel system (5). and that the shape memory element (3) is injected into and / or overmolded by a material of the flap element (2).

Provided is a flow path switching unit of a dryer configured to dry a drying material. The flow path switching unit includes a body portion, and a flow path guide dividing an internal space of the body portion to selectively form one of a first flow path of air for drying the drying material and a second flow path of air for dehumidifying outside air, according to an arrangement position of the body portion, and at a first position, the path switching unit provides the first flow path to guide air from a drum of the dryer toward a heat exchanger of the dryer, and at a second position, the path switching unit provides the second flow path to guide the outside air introduced from an outside of the dryer.

This invention provides a 3D-printed multi-scale synergistic energy-absorbing impact-resistant composite material and its preparation method, relating to the field of high-performance composite material technology. The composite material includes a core layer. Macroscopically, the core layer is a three-dimensional honeycomb-type negative Poisson's ratio structure composed of multiple concave hexagonal unit cells connected by connecting cell walls. Microscopically, the concave hexagonal unit cells exhibit position-selective material distribution characteristics. Flexible hinge structures are provided at the junctions of straight and V-shaped cell walls and at corners to trigger a tensile expansion effect. Furthermore, a biomimetic suture interlocking structure is formed between the rigid reinforcing units within the cell walls and the flexible continuous phase. Adjacent rigid reinforcing units in the same layer are connected by fine process connecting wires. This invention, through the synergistic design of the macroscopic structure and microscopic cells, utilizes flexible hinges to induce deformation, biomimetic suture reinforcement interfaces, and the sacrificial bond mechanism of the process connecting wires to effectively balance the requirements of high strength, high toughness, and lightweight.

A device for securing a discharge end of a gas discharge apparatus inside a gas delivery conduit of a fluid impermeable liner covering a liquid-receiving basin features a first portion configured to be supported on the basin so as to engage an outer face of the liner which normally engages the basin and a second portion of the device configured to be movable relative to the first portion to selectively engage an inner face of the liner in opposite relation to the first portion in a working position. The inner face of the liner delimits the interior of the liner-covered basin. The first and second portions are configured to cooperatively form a generally tubular cavity substantially encompassing the gas delivery conduit in the working position, to clamp the gas delivery conduit over the discharge end of the gas discharge apparatus to substantially form a fluidic seal therebetween.

The invention relates to application of thiohydracrylic acid ligand modified water-soluble AIGS in photocatalytic CO2 reduction reaction, the photocatalytic CO2 reduction reaction is carried out based on the thiohydracrylic acid ligand modified water-soluble AIGS, the water-soluble AIGS adopts a Ga < 3 + > doping strategy, and through selective substitution of Ga < 3 + > to In < 3 + > sites, lattice defect repair and passivation are synchronously realized, non-radiative recombination is reduced, and the photocatalytic CO2 reduction reaction is carried out on the basis of the thiohydracrylic acid ligand modified water-soluble AIGS. The AIS quantum dot prepared by the method disclosed by the invention has the advantages that an electron structure is regulated and controlled, the position of a conduction band is moved to a higher position (-0.65 Vvs.NHE), the thermodynamic driving force of CO2 reduction is enhanced, and meanwhile, surface catalytic sites are optimized, so that the photocatalytic CO2 reduction activity and CH4 selectivity of the AIS quantum dot are remarkably improved, and the overall yield is improved.

The invention provides a method for chlorinating aromatic hydrocarbon by using a novel catalyst composition, in particular to a method for synthesizing 2-methyl-4-chloro-phenoxyacetic acid by chlorinating 2-methylphenoxyacetic acid or salt thereof, which can effectively improve the position selectivity of chlorination reaction, inhibit the generation of byproducts and the degradation of products, improve the purity, the content and the yield of the products and reduce the production cost. The method is convenient to operate and more suitable for large-scale industrial production, and green production without organic solvents is realized.