1586results about How to "Quality controllable" patented technology

The present invention is directed to a system, including apparatus and architecture, and method for providing scheduled and ad hoc voice over IP conference services having enhanced quality and reliability. The system uses an overlay network of geographically distributed conference servers working simultaneously and collaboratively to host a given conference session. Multiple conference servers simultaneously and collaboratively perform the necessary audio mixing. The voice routing path is established and controlled within the overlay network and supports conference services across different conference service providers.

The invention relates to compound thermal insulation plastering material for external wall, which consists of a compound cementing material and a lightweight aggregate. The compound cementing material consists of cement, active admixture, lime powder, promoter, surfactant, anti-crack and waterproof agent, water retaining agent, flame retardant, re-dispersible emulsion powder, alkali-resistance fiber and coal flying ash cenosphere; the lightweight aggregate consists of EPS grain and expanded perlite. The invention has the advantages of low density, thermal performance, high strength, good impact resistance, bond strength and low shrinkage. The compound cementing material adopts a plurality of polymeric cementing materials, allows the insulation material to have good bond performance and simultaneously ensures falling and slipping resistance performance. The invention has good water resistance and high softening coefficient. By using cement-based cementing material as main material and organic reinforced material and waterproof component as auxiliary materials, the invention has a hydrophobic rate more than 98 percent and a softening coefficient more than 0.7. The invention can save energy and protect environment. A great deal of industrial waste residue is used in the materials, which can save a great number of energy, realize resource utilization of the waste residue and is in favor of environmental protection.

The invention discloses a preparation method for rate type artificial graphite negative-pole material with high energy density. The preparation method comprises the following steps: subjecting raw material cokes to coarse breaking and pulverizing directly or coarse breaking, high-temperature modifying and then pulverizing, and carrying out reshaping treatment, so as to obtain primary granules A; kneading the primary granules A and an organic carbon source, then, carrying out dynamic thermal coating, and carrying out screening, so as to obtain primary granules B; uniformly mixing the primary granules A with a binder, then, subjecting the mixture to granulating in a granulating reactor, and carrying out screening, so as to obtain secondary granules C; subjecting the primary granules B and the secondary granules C to graphitizing separately, and carrying out screening, so as to obtain graphitized primary granules B and graphitized secondary granules C; and uniformly mixing the graphitizedprimary granules B and the graphitized secondary granules C proportionally, and carrying out screening, thereby obtaining a finished product. The preparation method is simple in process and easy in quality control; and by applying the artificial graphite negative-pole material prepared by adopting the method to a lithium-ion battery, the lithium-ion battery is large in capacity, good in cycle andexcellent in quick charging performance.

The invention relates to a buckling-restrained brace member, in particular to a combined steel pipe-encased concrete type buckling-restrained brace member. The invention solves the problems that the processing cost of the in-line brace inner core in the existing buckling-restrained brace member is high, the reliable low-cycle fatigue performance cannot be ensured, the cast-in-situ construction and the vibrating construction of mortar or concrete are apt to cause special soft material plates to be displaced and non-binder material plates to be locally damaged, and the production cycle is long. Technical scheme one: the in-line brace inner core and two first backing plates are clamped between two rectangular steel pipes filled with mortar or concrete blocks, each first backing plate is respectively and fixedly connected with outer walls which face to the two rectangular steel pipes and each backing plate is fixedly connected with an external restraining member; and technical scheme two: the in-line brace inner core and third backing plates are clamped between two rectangular steel pipes filled with mortar or concrete blocks, and the third backing plates are connected with pairs of bolt seats through a plurality of bolts. The combined steel pipe-encased concrete type buckling-restrained brace member can be used in the side force resisting component in the field of building structure engineering.

A process for preparing VO2 nanoparticles includes such steps as proportionally adding V2O5 and oxalic acid to reactor, adding water, stirring at 40-70 deg.C while reaction, evaporating to obtain solid vanadium oxalate, vacuum heating to 350-500 deg.C, holding the temp for 20-40 min for thermodecomposing, and cooling. It is possible to add MoO3 or N5H37W6O24 for preparing the doped product.

The invention discloses a specific-binding PD-1 and/or CTLA-4 dual variable domain immunoglobulin (DVD-Ig) obtained by modifying anti-PD-1 and CTLA-4 antibodies through adopting a molecular biology method. An anti-PD-1 antibody variable domain is intramolecular and an anti-CTLA-4 antibody is extramolecular, the anti-PD-1 antibody variable domain is extramolecular and the anti-CTLA-4 antibody is intramolecular, and two structures respectively keep the combination characteristics of PD-1 and/or CTLA-4 molecules. The anti-CTLA-4 and PD-1 dual variable domain immunoglobulin has potential tumor treatment values.

The invention relates to carbon paper and a preparation method thereof and particularly relates to special high-performance carbon paper for a gas diffusion layer of a fuel cell and a preparation method of the carbon paper. By taking short carbon fibers, plant fibers, heat bonding fibers and carbon black as raw materials, the carbon paper is prepared by the following steps: defibering, pulping and proportioning; then carrying out papermaking by adopting a wet-method papermaking process; and carrying out waterproof pigment coating treatment. The ratios of all the raw materials are as follows in parts by weight: 65-75 parts of the short carbon fibers, 10-15 parts of the plant fibers, 10-15 parts of the heat bonding fibers and 0-10 parts of the carbon black. According to the special high-performance carbon paper for the gas diffusion layer of the fuel cell and the preparation method of the carbon paper, a production process combining wet-method formation, hot pressing and coating is adopted and has the characteristics of simple process flow, easiness for controlling product quality, environment-friendly production process and the like; the material ratio of each raw material can be accurately controlled in the production so as to be good for controlling the product quality.

A curcumin medicine for preventing and treating cancer and cardiovascular and cerebrovascular disease includes a pre-concentrated curcumin liquid in the form of softgel and prepared from the precursor of curcumin and emulsifier and a fatty curcumin emulsion prepared from the precursor of curcumin, emulsifier, antioxidant, isotonic regulator, stabilizer, pH regulator, and the water for injection. It can also provide energy to the patient.

The invention discloses a method for preparing a composite Ag-Ti oxide antibacterial film by magnetron sputtering, mainly comprising the steps of: 1) carrying out pretreatment on the surface of film carrier base material, sequentially washing by more than two organic solvents and deionized water under the condition of ultrasonic wave, the washing time by using the organic solvents and the deionized water being 5-15min, and finally, drying at 15-85 DEG C for 0.5-3h under the vacuum condition; 2) arranging a metal Ti target and a metal Ag target on a magnetron sputtering device, taking argon as working gas, filling reaction gas containing oxygen into a vacuum chamber of the magnetron sputtering device, sputtering the metal Ti by an intermediate frequency magnetron sputtering power supply of the magnetron sputtering device, sputtering the Ag by the magnetron sputtering power supply, and obtaining Ag-Ti metal oxide composite coating film. The method is simple and efficient, and the obtained film has high uniformity, good dispersibility and strong adhesive force, so as to be taken as antibacterial material which has the advantages of broad spectrum, high efficiency, permanent antibacterial performance, safety and environmental protection.

The invention discloses a total bufogenin extract with antitumor function and also discloses a preparation method of the extract and application thereof in the preparation of antitumor medicines. The total bufogenin extract of the invention is prepared by organic solvent extraction, column chromatography separation and purification of dried toadskin; the content of total bufogenin is over 80 percent, wherein the content of resibufogenin is over 12 percent, the content of cinobufagin is over 4 percent, and the content of bufotalin is over 10 percent. Compared with the prior art, the invention eliminates bufotenine alkaloid which has irritation, is easy to cause hypersensitivity but has no antitumor activity, efficiently collects the effective part of total bufogenin which has significant antitumor activity, therefore pharmacological action is stronger, the clinical curative effect is higher and the toxic and side effect is lower. The total bufogenin extract can be prepared into various pharmaceutical preparations for clinical application, therefore the invention has the functions of killing tumor cells, inducing differentiation and apoptosis of tumor cells, inhibiting the neovascularization of tumor cells and lowering the neoplasm metastasis rate, etc.

The invention discloses a reinforcement method and a reinforcement structure for treating railway soft soil roadbed settlement overweight before operation. The reinforcement structure mainly consists of five parts, namely a main bearing structure system, a reinforced cushion layer structure system, a foundation bed drainage system, a settlement observation system and a reserved grouting system. The technical problems that the existing roadbed is greatly damaged, the construction period is long, the construction property is low, the quality is difficult to control and the problem that the soft soil roadbed settlement overweight is caused in the conventional technical scheme are effectively solved.

An automatic indoor culture system for aquatic products features that the culture pool is stepped for staged cultures, the water for culture is treated by a circulating water treating system, the water quality is monitored and the optimum state is controlled by a water monitor system, and beside, the bait is uniformly distributed by an overlead moving throwing equipment. Its advantages are high density and quality, high survival rate and high output.

The invention belongs to the technical field of building construction and in particular relates to a fully-prefabricated structure and a construction method thereof. The fully-prefabricated structure comprises a top plate, peripheral wall boards and base plate concrete precast members, wherein an assembly clearance joint is preserved between every two adjacent concrete prefabricated members; joints connected with the concrete prefabricated members in parallel adopt L-shaped stagger-jointed lapping; in addition, the prefabricated wall panels are connected by embedded split bolts or connected by grouting and casting of reserved steel bars and matched holes; vertical joints between the prefabricated wall panels and the top plate and the base plate adopt grouting and casting connection through the reserved steel bars and the matched holes; water-expandable rubber water-stop strips are arranged in the reserved assembly clearance joints and are grouted with cement-based grouting materials; sealants are arranged on openings in two sides of the reserved assembly clearance joints. The fully-prefabricated structure and the construction method thereof disclosed by the invention have the advantages that the construction speed is high, the quality is easy to control, and materials such as a template scaffold are saved; the members are good in appearance quality and durability; field wet operation is reduced, so that environment friendliness is facilitated; the fully-prefabricated structure and the construction method thereof are suitable for construction of single-storey assembled buildings and multi-storey assembled buildings having no seismic requirements.

The invention discloses a long-chain recombination human bone pattern generating protein-2 and preparing method and application, which is characterized by the following: utilizing gene project technique to grow the protein in the expressing system of escherichia coli and bacillus subtilis; adopting human bone sarcoma cell mRNA to do reverse transcription to obtain the cDNA as form; augmenting nucleotide sequence of entire 114 amino acids naturally from carboxyl end; adding a segment of nucleotide in front of the first codon of primer 5' end; increasing a segment of polypeptide at N end corresponding to amino acid sequence; obtaining long-chain rhBMP-2 gene with molecular weight at 30KD and purity over 95%.

The invention belongs to the technical filed of medicines, and concretely relates to optically pure benzyl-4-chlorophenyl C-glucoside derivatives represented by formula (II) and formula (III), a method for preparing the above compounds and intermediates thereof, a medicinal preparation and a medicinal composition containing the compounds, and an application of the optically pure benzyl-4-chlorophenyl C-glucoside derivatives in the preparation of medicines for treating and/or preventing insulin-dependent diabetes, non-insulin dependent diabetes, insulin resistance diseases or obesity, various diabetes and relevant diseases as a sodium-glucose cotransporter (SGLT) inhibitor.

The present invention relates to a lansoprazole freeze-dried powder injection and its preparation method. Said lansoprazole freeze-dried powder injection contains ethylene diamine tetraacetic acid (EDTA) and/or its salt, and is made up by using active component lansoprazole, ethylene diamine tetraacetic acid and/or its salt, stabilizing agent, excipient, pH regulator and injection water through a certain preparation process. Besides, said invention also provides the concrete steps of said preparation process.

The invention relates to single-component inorganic heat-insulating mortar which is prepared from the following components in parts by weight: 400-500 parts of cement, 400-450 parts of expanded closed cell perlite, 100-200 parts of fly ash, 5-10 parts of redispersible emulsion powder, 10-30 parts of sepiolite fiber, 2-3 parts of cellulose ether, 10-20 parts of gypsum and 1000-1200 parts of water. The inorganic heat-insulating mortar has low heat conduction coefficient, good thermal insulation performance, high compressive strength and bonding strength, excellent mechanical performance, good construction workability, simple operation and high construction efficiency; and single-component production is carried out by adopting the process of the invention, the quality is easy to control, and the invention is beneficial to on-site civilized construction.