35results about How to "Difficult to prepare" patented technology

An extrusion-based freeform fabrication method for making a three-dimensional object from a design created on a computer, including (a) providing a support member; (b) operating a dispensing head having at least one dispensing nozzle with a discharge orifice for dispensing continuous strands of a material composition in a fluent state at a first temperature onto the support member, the material composition including a reactive prepolymer with a melting point above 23° C. and the first temperature being greater than the prepolymer melting point; (c) operating material treatment devices for causing the dispensed strands of material composition to rapidly achieve a rigid state in which the material composition is substantially solidified to build up the 3-D object, the material treatment devices also working to convert the reactive prepolymer to a higher molecular weight thermoplastic resin; and (d) operating control devices for generating control signals in response to coordinates of the object design to control the movement of the dispensing nozzle relative to the support member and for controlling the strand dispensing of the material composition to construct the 3-D object.

The present invention provides an organic EL display panel manufacturing method which is capable of forming a desired organic film or the like with high accuracy without imparting damages to a substrate and an organic film and an organic EL display panel which is manufactured by the method. An opening portion which corresponds to a panel pattern region of a display panel is formed in a vapor deposition mask. The opening portion has a bottom surface in the inside of a recessed surface which is retracted from a surface on which the vapor deposition mask is brought into contact with the substrate. The opening portion of the vapor deposition mask is spaced apart from the substrate with a predetermined gap space and evaporated particles from an evaporating source are vapor-deposited to the substrate through the opening portion.

To provide a conductive film forming photosensitive material from which a conductive film having high electromagnetic wave shielding properties and high transparency simultaneously can be manufactured and which is reduced with respect to pressure properties.A conductive film forming photosensitive material including a support having thereon an emulsion layer containing a silver salt emulsion and capable of manufacturing a conductive film by exposing the emulsion layer, performing a development treatment and further performing physical development and / or plating treatment, wherein the emulsion layer is disposed substantially in an uppermost layer; and the emulsion layer contains an antioxidant.

The invention provides an electrode 1 comprising a collector 1a with electron conductivity and an electrode active material-containing layer 1b with electron conductivity formed on the collector 1a, wherein the electrode active material-containing layer 1b includes conductive polymer-covered carbon nanotubes.

The viscosity increasing and foaming process for preparing foamed aluminum or aluminum alloy includes the following steps: compounding water solution of sulfate or fluoride salt; adding carbonate powder via stirring, stoving and powdering the mixture; mixing carbonate powder and titanium hydride powder; heating aluminum or aluminum alloy to melt; adding carbonate powder or compound foaming agent powder via stirring; maintaining in the furnace; and fast water cooling to solidify after growing to reach the required size. The process can form spherical pores in the foamed aluminum or aluminum alloy.

Disclosed are novel reverse turn mimetics based on the framework of pyrazino-triazinone, and the use thereof in the treatment of cancers, particularly, acute myeloid leukemia. A method is also provided for manufacturing the reverse turn mimetics on a mass scale.

A golf ball-forming composition, golf balls prepared from the composition and the process for preparing thereof. The golf ball-forming composition is composed of the following: polyvinyl alcohol resin 5-80 wt %; filler 0-90 wt %, natural high polymer material 0-60 wt %, and plasticizer 5-50 wt %. The filler is the common filler known by the skilled person in the art; the natural high polymer material is celluloses or amyloses; the plasticizer is the common substances used by the skilled person in the art. The golf ball-forming composition is water soluble and biodegradable. The water soluble and biodegradable golf ball has a hollow inside, and has a surface which is disposed with at least one through hole communicated with the hollow. When the golf ball is hit into water, water will enter the hollow via the through hole, thereby increases the contact area between water and the ball and accelerates the dissolution of the ball, so that the ball may eventually completely biodegraded in the environment.

The invention discloses an electrode structure of a lithium sulfur battery and a processing technology therefor. The electrode structure comprises a sulfur-containing active substance layer and a current collector; the upper surface of the active substance layer is coated with a first carbon coating layer; the lower surface of the active substance layer is coated with a second carbon coating layer; and the second carbon coating layer is positioned between the active substance layer and the current collector. The electrode structure has the main characteristics that the two sides of the sulfur-containing active substance layer are coated with the carbon coating layers; namely, the surface of the active substance layer, and the space between the active substance layer and the current collector are coated with the carbon coating layers, wherein a carbon material is taken as the main component, and the carbon material with a large specific surface area or low bulk density is preferable; the carbon material with the relatively large specific surface area can absorb polysulfide and restrain a shuttle effect; meanwhile, the carbon material with the low bulk density can form the relatively loosen carbon coating layer so as to store a large amount of electrolyte in the carbon coating layer, and the dissolution of sulfur and the polysulfide is facilitated, a positive electrode reaction is promoted, and the increase of electrolyte viscosity caused by resolution is restrained.

The present invention provides a method for manufacturing a composite double-metal fracture splitting connecting rod, comprising the steps of: providing a moveable spacer at a large end of a mold cavity of a connecting rod, to divide the mold cavity into two separate parts; casting a connecting rod body and a connecting rod cap with material for the main body of the connecting rod; removing the spacer from the mold cavity when the majority of the material is solidified, then injecting material for a fracture splitting region into an empty mold cavity obtained after the removal of the spacer, and metallurgically bonding the two types of material to form a composite double-metal casting; then, separating the connecting rod body from the connecting rod cap by a fracture splitting apparatus along preset fracture surfaces; and positioning and accurately assembling through engaged staggered structures on the two fracture surfaces.

[Problem] To provide a preparation process by which an organic alkali metal compound is obtained in a high yield and a process for preparing an organic transition metal compound using the organic alkali metal compound. [Means to solve the problem] A process for preparing an organic alkali metal compound, which is characterized by adding a compound represented by the following formula (2) in the reaction of an active proton-containing compound represented by the following formula (1) with an alkali metal compound.RHp  (1)In the formula (1), R is a hydrocarbon group or an amino group and may contain a halogen atom, a silicon atom, an oxygen atom or a nitrogen atom, H is an active proton, and p is the number of hydrogen atoms abstracted in the reaction with the alkali metal compound.In the formula (2), Ra to Rc are each an atom or a group selected from a hydrogen atom, a hydrocarbon group, a heteroatom-containing group and a silicon-containing group and may be the same as or different from each other, and the neighboring substituents may be bonded to each other to form a ring.

Provided are a method of preparing a high softening point pitch and the high softening point pitch prepared thereby, in which a polyene radical intermediate is formed, and an alkylaromatic radial material is linearly linked to the polyene radical intermediate in a benzyl or methylene form to be polymerized. The method includes performing heat treatment by adding a compound, which is able to a polyene radical intermediate, to 1- to 4-ring alkylaromatic condensates to produce a basic pitch, and performing vacuum heat treatment for the basic pitch.

The invention provides near-infrared light emitting microcrystalline glass with an embedded Er:YAG microcrystalline phase and a preparation method of the microcrystalline glass. A microcrystalline phase substance is YAG, active ions are Er <3+> and uniformly doped into YAG microcrystalline phases, the microcrystalline phases are uniformly distributed in the microcrystalline glass, cationic mole percentage of the near-infrared light emitting microcrystalline glass includes, 13-34.9% of Y<3+>, 65-77% of Al<3+> and 0.1-10% of Er<3+>, and the sum of the mole percentage of the active ions Er<3+> and Y<3+> is 23-35%. Er:YAG microcrystalline separated out from the Er:YAG microcrystalline glass is small and uniform in size, so that the prepared microcrystalline glass has the advantages of high transparency and heat conductivity, resistance to deliquescence and x-ray irradiation, excellent optical performance and the like, and the microcrystalline glass can be applied to the fields of optical amplifiers, lasers and the like.

The invention discloses a method for preparing a metal nano-circular ring. The method comprises a first step of sequentially planting a medium layer and a first metal layer on the surface of a thin film of a photoelectric device, wherein the metal nano-circular ring needs to be formed on the surface of the thin film, a second step of machining a first metal thin film into metal nano-particles through the annealing process, a third step of etching the medium layer to form medium nano-particles with the metal nano-particles as a reticle mask, a fourth step of removing the metal nano-particles, planting at least one layer of a second metal thin film on the device surface provided with the medium nano-particles and on the tops and the side walls with the medium nano-particles, etching the second metal thin film, and only retaining the second metal thin film on the side walls with the medium nano-particles, and a fifth step of removing the medium nano-particles and finally forming the metal nano-circular ring.

A method is provided for the synthesis of glycopeptides using a sugar assisted ligation strategy, wherein an N-terminal peptide portion in the form of a thioester is coopled with a C-terminal peptide portion bearing a carbohydrate moiety comprising a thiol group.

The present invention relates to a cancer vaccine, and specifically, to a pharmaceutical composition for treating cancer containing a nano-vehicle derived from tumor tissue, and a method for treating cancer using the nano-vehicle derived from tumor tissue, and the like. According to the present invention, a nano-vehicle antigen derived from tumor tissue indicates a high yield while having properties similar to those of an exocellular vehicle, and can be variously modified, and is thus expected to be very useful for developing the cancer vaccine.

The invention discloses a preparation method of a degradable PE film, which comprises the following steps: heating gallium to a temperature higher than a melting point to melt, dripping into PE micro powder, continuously stirring, keeping the temperature until the PE micro powder is uniformly mixed with the liquid gallium, then mixing with modified starch, granulating by using an extruder to prepare degradable master batches, and then preparing the degradable master batches into a film by using a blow molding machine. Gallium oxide is used as a photocatalyst to replace silicon dioxide, the silicon dioxide is a light ultraviolet absorbent, and the gallium oxide can be used as a deep ultraviolet absorbent, so that the service life of the degradable plastic under sunlight is prevented from being shortened. When degradation is needed, ultraviolet rays with specific wavelengths are used for digestion, and meanwhile, the ultraviolet rays are mixed with starch degradable substances to generate a synergistic effect.

[Problem] To provide a preparation process by which an organic alkali metal compound is obtained in a high yield and a process for preparing an organic transition metal compound using the organic alkali metal compound. [Means to solve the problem] A process for preparing an organic alkali metal compound, which is characterized by adding a compound represented by the following formula (2) in the reaction of an active proton-containing compound represented by the following formula (1) with an alkali metal compound.RHp   (1)In the formula (1), R is a hydrocarbon group or an amino group and may contain a halogen atom, a silicon atom, an oxygen atom or a nitrogen atom, H is an active proton, and p is the number of hydrogen atoms abstracted in the reaction with the alkali metal compound.In the formula (2), Ra to Rc are each an atom or a group selected from a hydrogen atom, a hydrocarbon group, a heteroatom-containing group and a silicon-containing group and may be the same as or different from each other, and the neighboring substituents may be bonded to each other to form a ring.

Provided are a composite negative electrode material, a preparation method therefor and a lithium battery. The composite negative electrode material comprises silicon-containing particles and a carbon coating layer coating at least part of the surface of silicon-containing particles. In Raman spectrum, the composite negative electrode material has a silicon characteristic peak A between 450 cm−1-550 cm−1, a carbon characteristic peak B between 1300 cm−1-1400 cm−1, a carbon characteristic peak C between 1530 cm−1-1630 cm−1, and a graphene structure characteristic peak D between 2500 cm−1-2750 cm−1. The preparation method comprises: in protective atmosphere, introducing reaction gas to react with silicon-containing particles, the reaction temperature being 700° C.-1450° C., and the reaction gas comprising a carbon-containing gas, so that at least part of the surface of silicon-containing particles form a carbon coating layer, so as to obtain the composite negative electrode material.

A method is provided for the synthesis of glycopeptides using a sugar assisted ligation strategy, wherein an N-terminal peptide portion in the form of a thioester is coupled with a C-terminal peptide portion bearing a carbohydrate moiety comprising a thiol group.

The present invention discloses edible granules with varied flavors, relating to the technical field of food. The present invention comprises carbohydrates, water, emulsifiers, salt, sweeteners, flavor enhancers, acidity modifiers, food flavors, food colors and antioxidants, wherein the amounts of them are: carbohydrates 70-80%, water 10-20%, emulsifiers 0-10%, salt 0-10%, sweeteners 0-10%, flavor enhancers 0-2%, acidity modifiers 0-2%, food flavors 0.01-1%, food colors 0-0.5% and antioxidants 0.01-0.04%. In the present invention, through different components of carbohydrates, water, emulsifiers, salt, sweeteners, flavor enhancers, acidity modifiers, food flavors, food colors and antioxidants, edible granules with varied flavors may be prepared without adding natural substances in the granules of the present invention, so that the problem that the existing natural seasonings have a single taste and are difficult to prepare is solved.

The present disclosure provides a compound of formula I or a pharmaceutically acceptable salt, a solvate, or a prodrug thereof, wherein M is a monovalent alkali metal. The present disclosure also provides a method for preparing the compound or its pharmaceutically acceptable salt, solvate, or prodrug, and further provides a pharmaceutical composition containing the compound and its use in the preparation of a medicine, which can be used for the treatment of CCR4-mediated diseases.