76results about How to "Less harmful" patented technology

This disclosure relates to CryoArrays, which permit the analysis of samples (such as protein, nucleic acid, virus, or cell samples) in arrays that are prepared at low temperatures. Because CryoArrays are constructed as a block of substantially columnar samples, the block can be sliced to provide a plurality of identical or substantially identical individual arrays. The individual arrays can be used for parallel analysis of the same array feature set, for instance with different probes or under different conditions. Also provided are methods of making CryoArrays, devices for making CryoArrays, and kits.

The present invention relates to improved chemical additives for use in hydraulic fracturing fluids for the recovery of oil or natural gas entrained in deep-layer shale formations. Many chemical agents currently in use in such water / sand (or other proppants) mixtures could pose human and animal health risks if these chemicals migrate from the shale beds into the environment contaminating the water table, rivers, streams and lakes. The fracturing fluid chemical additives of this invention are designed to be retained or anchored in or near the deep shale layers and are prevented, or greatly delayed from upward migration. Specifically, many chemical additives required for proper fracturing fluid performance can be chemically bonded to inert particulate materials before incorporation into said fluids. The fracturing fluid chemical additives are able to perform their function in the shale fracturing process, and then become nearly permanently trapped in the shale layers protecting the environment above.

An object of the present invention is to provide a method for producing an alkyl ester of a fatty acid from a fat or oil, of which main component is a triglyceride, and an alkyl alcohol under mild conditions in a high reaction efficiency, and the alkyl ester of a fatty acid can be effectively utilized as a diesel fuel oil, an industrial raw material or the like, the method further being capable of utilizing on an industrial scale, in which post-treatment steps for removing a catalyst component can be simplified or omitted. For this purpose, the method for producing an alkyl ester of a fatty acid of this invention includes the step of carrying out a transesterification reaction between a fat or oil and an alcohol in the presence of a base catalyst containing calcium oxide, characterized in that the method includes the step of contacting the base catalyst with the alcohol, to carry out an activation treatment thereof in advance of the reaction.

A Co-based alloy containing not less than 0.001 mass % and less than 0.100 mass % of C, not less than 9.0 mass % and less than 20.0 mass % of Cr, not less than 2.0 mass % and less than 5.0 mass % of Al, not less than 13.0 mass % and less than 20.0 mass % of W, and not less than 39.0 mass % and less than 55.0 mass % of Ni, with the remainder being made up by Co and unavoidable impurities, wherein the contents of Mo, Nb, Ti and Ta which are included in the unavoidable impurities are as follows: Mo<0.010 mass %, Nb<0.010 mass %, Ti<0.010 mass %, and Ta<0.010 mass %.

Disclosed is a water de-contamination system, methods, and apparatus using alternating aerobic, anaerobic, and aerobic conditions, with carbon and other waste processing treatments, to remove contaminants from water. Included is an aerobic system in flow communication with an outlet from a waste tank; waste processing treatments in flow communication with liquid exiting the aerobic system and in which anaerobic conditions can be created; means for creating and maintaining anaerobic conditions either within the waste processing treatments or after fluid exits the waste processing treatments; means for return of the fluid into aerobic conditions. A fluid retaining device within which anaerobic conditions are maintained and nitrogen-containing compounds and other contaminants are processed and removed is used. Waste processing treatments are provided within or adjacent the fluid retaining device. Included are outflow means for fluid to exit the fluid retaining device and enter aerobic conditions for final processing and release.

The invention relates to a self heat-generating and gas-generating clean fracturing fluid comprising the raw materials of, by mass: 0.2-0.5% of a thickening agent, 2-4% of a structural enhancer, 2-15% of a heat generating agent A, 2-10% of a heat generating agent B, 2% of a structural enhancer solvent, 1-5% of a heat generating catalyst, 0.1-1% of a cleanup additive, 0.05-1.0% of a gel breaker, 0.05-0.15% of a broken plastic additive, and balance of water. The fracturing fluid has good temperature resistance, good shearing resistance, and sand-carrying property. The fluid can automatically generate heat and gas, such that the fracturing fluid is foamed in stratum. The fluid has low filtration loss. Gel breaking can be carried out with conventional persulfate and stratum oil, gas, and water dual gel breaking manner. Quick flow-back after pressure can be realized, and low-pressure oil and gas well self-spraying flow-back effect can be greatly improved. No residue and low harm is caused. The fracturing fluid can be used in fracturing modification of middle-shallow-stratum high-pour-point oil, crude oil with high viscosity, and low-pressure low-permeability oil and gas reservoirs.

Detection of toxic gluten oligopeptides refractory to digestion and antibodies and T cells responsive thereto can be used to diagnose Celiac Sprue.

An off-board refueling / refurbishing system for an integrated hermetically sealed fuel cell and solid hydrogen storage power plant, used to power transportation means operated and used by the public. A replaceable power plant package is handled in a refueling station where the sealed power plant package with depleted fuel and optional discharged electrical accumulator is removed from a vehicle and replaced with a refueled and recharged package. A separate recharging / refurbishing facility is provided where the waste product is removed from the depleted power plant package, the fuel cell and the solid hydrogen storage are tested and refurbished as needed.

The invention relates to an O-type foot-and-mouth disease virus antibody chemiluminescence detection kit. The kit includes an polystyrene board coated by antigen, a monoclonal antibody, a standard substance, a luminescence substrate solution A and a luminescence substrate solution B. The polystyrene board coated by antigen is an opaque polystyrene plate coated by an O-type foot-and-mouth disease virus RE2 recombinant protein; the monoclonal antibody is a horseradish peroxidase labeled O-type foot-and-mouth virus monoclonal antibody; the luminescence substrate solution A comprises a Lumino, hydroxycoumarin, gallic acid, a Tris-Hcl buffer and water; the standard substance is foot-and-mouth virus O-type antibody respectively diluted buy a calibration diluent, wherein the dilution is 0NU / mL, 2NU / mL, 5NU / mL, 10NU / mL, 30NU / mL and 60NU / mL respectively. The kit of the invention can be used for detecting O-type foot-and-mouth disease virus antibody, has the advantages of high sensitivity and wide detection range, and realizes the quantitative detection of foot-and-mouth disease antibody.

A disposable device for exfoliating skin is disclosed which is simple and inexpensive to manufacture. The device can be secured to a shower floor or wall without tools or adhesives, and provides a stationary and waterproof exfoliating device for hands-free use while showering.

The present invention relates to detergent, and is especially one kind of detergent containing bromochloro hydantoin. The detergent of the present invention consists of bromochloro hydantoin in 0.1-50 wt% and other detergent in 50-99.9 wt%.

The invention discloses a clean foaming fracturing fluid and a preparation method thereof, and relates to the technical field of hydraulic fracturing. The clean foaming fracturing fluid comprises the following components by mass percent: 0.8-1.2% of a magnetic nanoparticle dispersion, 0.8-1.2% of a foaming agent, 3-5% of a surfactant and 92.6-95.4% of a first solvent. The preparation method comprises the following steps: adding citric acid into a second solvent to obtain a citric acid solution, dissolving ferrous chloride tetrahydrate and ferric chloride hexahydrate into the citric acid solution to obtain a first solution, adding ammonia water into the first solution to obtain a second solution, heating, stirring the second solution, separating to obtain a solid matter generated in the second solution, dissolving the solid matter into water, uniformly dispersing to obtain the magnetic nanoparticle dispersion, adding the magnetic nanoparticle dispersion, the foaming agent and the surfactant into the first solvent, and stirring to obtain the clean foaming fracturing fluid, wherein both the first solvent and the second solvent are water. The clean foaming fracturing fluid has relatively good magnetism, temperature resistance, shearing resistance and sand suspension.

The present invention provides a sheet glass laminate structure excellent in penetration resistance (bulletproof nature), crime prevention nature, heat shock resistance, translucency and airtightness. The sheet glass laminate structure (10) is produced by laminating at least three sheets of sheet glass (20) each having a sheet thickness of less than 1 mm with intermediate layers (30) interposed between them. When a central portion 20 mm in length including the middle point of a virtual line and opposite end portions respectively being 20 mm long from the opposite ends of the virtual line are set on the virtual line having a length equal to 50% of the maximum overall dimension of the translucent surface of the sheet glass (20) and extending in parallel with the direction of maximum overall dimension with the center of the translucent surface as its middle point, maximum variation DeltaHmax of the interval H between sheets of sheet glass opposing across the intermediate layer in connection with the central portion and the opposite end portions satisfies the following relation; 0[mu]m<DeltaHmax<20[mu]m.

The invention discloses a thermo-sensitive type chitosan hydrogel entrapped cell material as well as a preparation method and application and belongs to the technical field of medicine biologics. Thehydrogel entrapped cell material disclosed by the invention is prepared from the following raw materials in percentage by mass at 0-4 DEG C: 0.8-1.5% of low-viscosity chitosan, 0.4-0.5% of lactic acid, 1-3% of beta-sodium glycerophosphate and the balance of water. The hydrogel entrapped cell material disclosed by the invention is capable of entrapping cells to form gel at 37 DEG C. Compared with conventional chitosan / beta-sodium glycerophosphate thermo-sensitive hydrogel, the amount of the beta-sodium glycerophosphate can be effectively reduced, the toxicity of the high permeability of the hydrogel upon cells can be avoided, and in-vivo or in-vitro 3D cell culture in an environment of 37 DEG C after cell entrapping and injection can be achieved. The material has the advantages of being simple in reaction condition, short in response time, good in gel thermal stability, free of cytotoxicity, good in biocompatibility, and the like.

The invention relates to a special chelating agent for oil-gas field fracturing, which comprises the following ingredients: sodium pyrophosphate, ethylenediaminetetra, glutamic acid N,N-sodium diacetate, diethylene triamine pentoacetic acid (DTPA), EDTA (ethylene diamine tetraacetic acid), N-(2-hydroxyethyl)ethylenediaminetriaceticacid, diethylenetriaminepenta acid, nitrilotriacetic acid dodecyl dimethyl benzyl ammonium chloride, water and the like.The special chelating agent for the oil-gas field fracturing can effectively reduce a phenomenon of scaling of guanidine gel fracturing fluid, and scaling of the guanidine gel fracturing fluid and formation water and reduce a damage effect on a stratum; and the implementation and application of the special chelating agent for the fracturing has an important significance for reducing potential safety hazard in oil-gas field production, ensuring fracturing fluid quality, protecting the stratum and improving oil gas productivity.

The invention discloses a mesenchymal stem cell cryopreservation solution and an activity research method thereof. The method comprises the following steps: separating hUC-MSCs, performing in-vitro amplification on the hUC-MSCs, collecting P3 generation cells, performing cooling cryopreservation, performing comparative statistics on the recovered hUC-MSCs and fresh cells, and detecting and identifying the hUC-MSCs. The method has the advantages that a large number of MSCs with high purity are obtained through a serum-free culture adherent method, programmed cooling is conducted through a programmed cooling instrument, damage to cells is reduced, good cell viability is kept, and when the ratio of DMSO to FBS to DMEM is 1: 8.5: 0.5, the survival rate after cryopreservation is optimal, and the morphology and growth rate after recovery are basically consistent with those of normal fresh cell culture.

A multiple layer coating for application upon surfaces of an implantable medical device, a first layer of such coating includes an anti-thrombogenic factor and a second layer of such coating includes a hyperplasia inhibiting factor that is releasably contained therein. The hyperplasia inhibiting factor is controllably released from the multiple layer coating over a predetermined period of time upon implantation of the medical device in vivo.

The invention relates to a competitive hog cholera virus antibody chemiluminescence quantitative detection kit, which comprises a coating antigen coated plate, an enzyme-labeled antibody, a calibrator, a washing concentrate, a luminescent substrate A and a luminescent substrate B, wherein a purified hog cholera virus E2 protein is taken as a coating antigen of the antigen coated plate; the enzyme-labeled antibody is a hog cholera virus monoclonal antibody labeled by horseradish peroxidase; hyperimmune serum immune to a live vaccine is diluted to concentrations of 0NU / mL, 2NU / mL, 5NU / mL, 10NU / mL, 30NU / mL and 60NU / mL by a calibrator diluent respectively; the luminescent substrate A contains luminol, hydroxycoumarin, gallic acid and a Tris-Hcl buffer solution. The kit has the advantages of short detection time, capability of greatly enhancing a detection signal, high sensitivity and the like.

An extrasonic scaler includes a triangulate straight scaler, a leftward bent arc-shaped triangulate scaler, a rightward bent arc-shaped triangulate scaler, a leftward bent distal-hoe semi-triangulate scaler, a rightward bent distal-hoe semi-triangulate scaler, a leftward bent mesial-hoe semi-triangulate scaler, and a rightward bent mesial-hoe semi-triangulate scaler. Thus, the extrasonic scaler is designed according to the tooth pattern of the human body so that the extrasonic scaler can reach the deeper surface of the tooth root from various different directions to remedy the oral and periodontal diseases, thereby enhancing the working efficiency.

An object of the present invention is to provide a method for producing an alkyl ester of a fatty acid from a fat or oil, of which main component is a triglyceride, and an alkyl alcohol under mild conditions in a high reaction efficiency, and the alkyl ester of a fatty acid can be effectively utilized as a diesel fuel oil, an industrial raw material or the like, the method further being capable of utilizing on an industrial scale, in which post-treatment steps for removing a catalyst component can be simplified or omitted. For this purpose, the method for producing an alkyl ester of a fatty acid of this invention includes the step of carrying out a transesterification reaction between a fat or oil and an alcohol in the presence of a base catalyst containing calcium oxide, characterized in that the method includes the step of contacting the base catalyst with the alcohol, to carry out an activation treatment thereof in advance of the reaction.

The present invention relates to a method of confining pollution generated in the top volume and / or in the bottom volume of an enclosure filled with a fluid, i.e. either a gas, which is in general air, or a liquid, which is in general water, the method confining the pollution by thermal stratification. In said method the mean temperature of said top volume is maintained higher than the mean temperature of said bottom volume by an amount that is sufficient to ensure that said two volumes are separated by a turbulent intermediate zone of narrow width, referred to as the "mixing zone", within which a steep temperature gradient is maintained; said intermediate zone constituting a virtual confinement barrier in a horizontal plane. The present invention also relates to apparatus associated with the method.

The invention belongs to the antirust technical field of metals, and discloses a special-purpose quick dry non-trace environmental protection rust-proof oil for a nickeled piece, which comprises a D50 solvent oil and an antirust agent which is dispersed in the D50 solvent oil. The special-purpose quick dry non-trace environmental protection rust-proof oil which comprises the D50 solvent oil is rapid in drying time when being used for the nickeled piece, greatly reduces traces which are produced when touching, can not volatilize unpleasant gas to cause discomfortableness of operators, and reduces damage to human health. Furthermore, a method for preparing the special-purpose quick dry non-trace environmental protection rust-proof oil for the nickeled piece is simple in operation and short in production cycle, and the special-purpose quick dry non-trace environmental protection rust-proof oil for the nickeled piece which is made from the method has the advantages of rapid dry no traces and environmental protection.

The present invention relates to a lighting device (12) comprising at least one light source (12a, 12b) adapted to emit white light and ultraviolet light, a collimator (18) adapted to collimate the white light, and a light exit window (16) through which the collimated white light and the ultraviolet light may pass into the ambient, wherein the lighting device is adapted to emit the collimated white light while spreading the ultraviolet light.

A method is provided for lowering the migration of a hydraulic fluid additive within a hydrocarbon-bearing formation penetrated by a well when producing hydraulic fracturing. Many chemical agents currently in use with water / sand (or other proppants) mixtures could pose human and animal health risks if these chemicals migrate from the shale beds into the environment contaminating the water table, rivers, streams and lakes. The fracturing fluid chemical additives employed are designed to be retained or anchored in or near the deep shale layers and are prevented, or greatly delayed from upward migration. Specifically, chemical additives required for proper fracturing fluid performance are covalently chemically bonded to inert particulate materials (e.g. silica having a particle size less than 2000 microns). The fracturing fluid chemical additives are thereby able to perform their function in the shale fracturing process, and thereafter become nearly permanently trapped in the shale layers protecting the environment above.

The invention relates to an electric-motor kitchen appliance (1), in particular an electric-motor handheld device, preferably a hand mixer (2), which comprises a switch (67). The invention also relates to a finger-actuated electric control (68) for the switch (67), and to a method for switching on / off a kitchen appliance (1). The switch (67) is unlocked when the safety switch (69) is actuated by the finger of a user. The safety switch (69) is electronically switched. The invention is characterised in that possibility of unintentionally operating the electric-motor of the kitchen appliance (1)is reduced due to the manual operation of the two separate switches. As a result, the safety of the electric-motor kitchen appliance (1) in the household is significantly increased.

The present disclosure relates to a dimethyl sulfoxide composition suitable for cleaning polymer residue found on the devices used for processing plastic materials, in particular polyurethane.

The strain of Trichoderma asperellum T34(2) CECT No. 20417 is useful for preparing substrates for biological control of vascular fusariose and death of plants caused by Rhizoctonia solani. The substrates can be peats, composts (hardwood compost, pine bark compost, cork compost, sludge compost from sewage treatment plants, garden residues, etc.) or formulations based on CPV-type compost (compost+peat+vermiculite). The fact that the substrates suppress both Fusarium oxysporum f. sp. lycopersici and Rhizoctonia solani provides an advantage in comparison with other substrates known in prior art. Another advantage is that the use of methyl bromide, a highly harmful product for the environment, in the control of vascular fusariose is avoided.