1489results about How to "Accelerated aging" patented technology

A universal closed-loop functional electrical stimulation system comprising at least one electrode assembly adapted to deliver an electrical stimulation signal to the central nervous system, peripheral nervous system, or muscles of a user, a sensor system adapted to detect a mechanical response to a muscle stimulation signal of at least one muscle associated with a muscle group stimulated through the nervous system or proximate to the electrode assembly. An electrical stimulation device operably coupled to at least one electrode assembly and the sensor system, the electrical stimulation device including a control system to automatically receive feedback from at least one characteristic of the muscle from the detected muscle response and adjust at least one parameter of the muscle stimulation signal in real-time and in response thereto and a programmed microprocessor for controlling said electrical stimulation and receiving input from said sensor system.

An electronic cigarette is provided, which includes: a housing, a liquid reservoir, and an atomizer assembly. The housing has a chimney formed therein; the liquid reservoir is used for storing liquid; the atomizer assembly received in the housing. The atomizer assembly includes a heating plate capable of absorbing liquid. An outer surface of the heating plate is in contact with the air in the chimney.

Coated inflatable fabrics, more particularly airbags to which very low add-on amounts of coating have been applied, are provided which exhibit extremely low air permeability. The inventive inflatable fabrics are primarily for use in automotive restraint cushions that require low permeability characteristics (such as side curtain airbags). Traditionally, heavy, and thus expensive, coatings of compounds such as neoprene, silicones and the like, have been utilized to provide such required low permeability. The inventive fabric utilizes an inexpensive, very thin coating to provide such necessarily low permeability levels. Thus, the inventive coated inflatable airbag comprises a film laminated on at least a portion of the target fabric surface wherein the film possesses a tensile strength of at least 2,000 and an elongation at break of at least 180%. The film provides a low permeability airbag cushion exhibiting a leak-down time of at least 5 seconds wherein the film is present on the surface in an amount of at most 3.0 ounces per square yard of the fabric.

A method of determining the ageing characteristics of an LED comprises applying a current stress pulse to the LED. The LED is monitored to determine when the thermal heating induced by the current stress pulse has been dissipated to a desired level. The operational characteristics of the LED are then measured before applying the next stressing pulse.

This method accelerates the effect of aging in a reproducible way and therefore is able to greatly reduce the time needed for a reliability test.

The invention provides the application of extracts of buddleja blades, and the extracts of buddleja blades are used to produce anti-saccharification agents, anti-aging agents, skin collagen damage inhibitors, or agents for inhibiting, preventing or improving the decrease in skin firmness or elasticity or skin wrinkles.

The invention relates to an aging-resistant EVA film adhesive for solar cell package and method for preparation, wherein the preparation constituents include ethane-vinyl acetate copolymer (EVA), cross-linking and curing agent, ultraviolet light absorbent, anti-oxidant, and hindered amine light-stability agent. The preparation comprises the steps of mixing homogeneously, blending extrusion, flow casting the extrudate, cooling down, drawing, and winding.

Low-pressure drip irrigation system, comprising a distribution pipe made of thin-walled sleeve collapsible when empty and designed to operate under hydraulic head up to 3 m H₂O, having a plurality of holes in the walls thereof, a plurality of branch tubes equipped with low-pressure drip emitters; and a plurality of connectors connecting the branch tubes to the holes of the distribution pipe.

The sleeve material is opaque and reflecting the solar radiation so that the natural growth of microorganisms and algae in the irrigation water is suppressed, and the pipe is not heated more than 35° C. above the ambient air temperature.

The irrigation system is assembled in the field from components of a kit by deploying the distribution pipe, filling it with water, cutting the holes by means of a special band-held tool, inserting the connectors into the holes, and assembling the branch tubes with the connectors.

The invention discloses an ethylene-acetic acid polymer rubber film for solar energy battery packaging and preparation method thereof. The rubber film is composed of ethylene-acetic acid polymer granular materials, solidifier, heat-conducting filler, antioxidant, UV stabilizer, and coupling agent according to certain mass parts; the preparation method is: 1, mixing heat-conducting filler and coupling agent, drying and dispersing the mixture by grinding, to obtain active heat-conducting filer; 2, mixing ethylene-acetic acid polymer granular materials and solidifier; 3, mixing antioxidant, UV stabilizer and said active heat-conducting filler; 4, adding mixture of said step 3 into mixture of step 2, mixing the mixture and extruding the mixture, casting, cooling, towing, coiling the extrusion, obtain rubber film of the invention. Compared with current products, the rubber film of the invention has a higher heat-conducting coefficient which is increased by more than 3 times, and properties of improved photo-electric conversion ratio of solar energy battery, and prolonged useful life.

Abstract of the Disclosure Methods of identifying agents which alter the NAD-dependent acetylation status and mono-ADP-ribosylation of nuclear proteins are disclosed. The methods further include identifying agents which alter the life span or aging of a cell or an organism by determining the level of NAD-dependent acetylation and/or ADP ribosylation of a nuclear protein. The invention also relates to a mammalian Sir2 protein which acetylates or deacetylates nuclear proteins in a NAD-dependent manner and has mono-ADP-ribosyltransferase activity. Host cells producing the Sir2 protein and antibodies to the Sir2 protein are also provided.

A pixel structure includes a light-emitting diode, a transistor, a data-receiving unit, a compensating unit, and a resetting unit. The transistor is configured to be electrically coupled to the light-emitting diode, and drive the light-emitting diode based on a voltage difference between the control terminal and the first terminal of the transistor. The data-receiving unit is configured to be electrically coupled to the first terminal of the transistor, and provide a pixel date signal to the first terminal of the transistor based on a first scan signal. The compensating unit is electrically coupled to the control terminal and the second terminal of the transistor to act as a current path therebetween. The resetting unit is electrically coupled to the light-emitting diode. The resetting unit is configured to respectively provide a reverse bias and reference voltage to the light-emitting diode and the control terminal of the transistor.

PCT No. PCT/FR98/00958 Sec. 371 Date Nov. 10, 1999 Sec. 102(e) Date Nov. 10, 1999 PCT Filed May 14, 1998 PCT Pub. No. WO98/51679 PCT Pub. Date Nov. 19, 1998The invention relates to an ester. The ester is characterized in that it presents the following chemical formula (I): in which: R1, R2 and R3 independently represent an atom of hydrogen, a methyl radical, A represents the following groups: R4 and R5 are identical or different and each represents a chain of the form:-Bm-Cn-Bp-Cq-Hin which: B is the following group: C is the following group: and in which the indices m, n, p, and q are respective integers lying in the range 0 to 4, it being understood that the sum m+n+p+q is limited to integers in the range 0 to 4. The ester can be used for preparing cosmetic or pharmaceutical, in particular dermatological, compositions having activity against radicals, against inflammation, favoring differentiation of keratinocytes, improving skin moisturizing, improving skin grain fineness, and having anti-aging or depigmenting activity.

The invention provides an esterifying enzyme compound bacteria liquid preparation method, and relates to the technical field of white spirit. The method comprises the following steps: sieving 20g of high-quality pit mud from old pit mud; thermally processing for 10 minutes at about 80 DEG C to obtain the esterifying enzyme compound strain purifying liquid; inoculating the purified liquid to the prepared and sterilized culture medium based on inoculating volume of 30%; culturing in a constant temperature culturing box for 7 to 8 days at about 36 DEG C so as to obtain a first-grade seed liquor; inoculating the first-grade seed liquor into the prepared and sterilized culture medium based on 22.5% of inoculating volume, and culturing for 7 to 8 days at 36 DEG C in the constant temperature culturing box to obtain the second-grade seed liquor; inoculating the second-grade seed liquor into the prepared and sterilized culture medium based on inoculating volume of 16%, and culturing for 7 to 8 days at about 36 DEG C in the constant temperature culturing box, so as to obtain the third-grade seed liquor; and expanding to culture the sieved and exuberant three-grade seed liquor in a common way to obtain the esterifying enzyme compound bacteria liquid for production. According to the method, the esterifying enzyme compound bacteria liquid is separated, purified and optimally selected from the high-quality pit mud, and the esterifying enzyme compound bacteria liquid has obvious effect during being applied in the production.

The invention discloses a corona aging acceleration device and a corona aging acceleration method for a polymer insulating material. The device comprises a sealed corona aging experimental case in which a pin array electrode and a metal plate electrode are arranged, wherein the pin array electrode is connected with a high voltage generation device; the metal plate electrode is grounded; a pinpoint array is arranged on the pin array electrode; a test sample is arranged on the metal plate electrode, and is opposite to the pinpoint array; and after voltage is applied, uniform corona discharge is generated between the pin array electrode and the metal plate electrode to perform corona aging on the test sample. The device and the method have the advantages of low requirements on experimental conditions, convenience for operation and quantitative control over aging factors in an experiment, and short experimental period, and are applied to researches on the corona aging resistance of insulating materials in a laboratory.

The invention relates to a method for predicting the cycle life of a battery pack for an electric car. The method comprises the following steps: step I, carrying out standard capacity test on the battery pack at normal temperature, and recording a real standard capacity of the battery pack; step II, carrying out dynamic stress working condition circulating test on the battery pack, returning to the step I after multiple times of working condition circulating test is ended, recording the test times of the standard capacity, ending the circulating test at the temperature if the real capacity of the standard capacity test for continuous 4 to 6 times is less than 80 percent of the rated capacity, wherein the test times of the standard capacity indicate the cycle life of the battery pack; step III, repeating the step I and the step II, and testing the cycle life of the battery pack under multiple temperature points. According to the method, the battery pack cycle life data at the grouped time is collected, a fitted equation is obtained by virtue of data processing, and the cycle life of a lithium ion battery at present can be predicted.

The invention relates to a novel neodymium (Nd)-based homogeneous rare earth catalyst as well as a preparation method and application thereof in conjugated diene polymerization. The synthesis method of the catalyst is simple and easy to control, and the homogeneous and stable catalyst with high activity can be obtained by utilizing the method. By utilizing the Nd-based homogeneous rare earth catalyst, a conjugated diene polymer can be synthesized, wherein, the cis-structure content of the polymer is more than 98%, the weight-average molecular weight of the polymer can be adjusted within the range of 1,000,000-2,500,000, and the molecular weight distribution (MWD) ranges from 3.0 to 4.0; and the polymerization process is stable and easy to control, thus being applicable to continuous technological operation.

A sol solution containing poly(titanic acid) and a planar heterocyclic ligand is provided. Titanium dioxide (TiO₂) particles are formed by aging the sol solution at a temperature below about 140° C. The particles have metallocene-like Ti-complexes comprising the heterocyclic ligand and can be substantially in the anatase phase. The heterocyclic ligands can be triazole, tetrazole, or thiadiazole. The sol solution may be prepared by aging a precursor solution. The precursor solution may contain the heterocyclic ligands and a precursor for poly(titanic acid). The precursor may be titanium alkoxide or titanium chloride. The sol solution may also contain at least one of an organic acid, a base, and a surfactant. The aged sol solution may form a colloidal dispersion of the TiO₂ particles. A photo-catalytic and transparent film may be formed from the TiO₂ particles by depositing a layer of the colloidal dispersion on a support.

The present invention relates to compositions and methods for altering cell function. In particular, the present invention provides compositions comprising selenium (e.g., SEL-PLEX) and methods of using the same (e.g., as a therapeutic and/or prophylactic treatment for neurodegenerative disease). Additionally, the present invention demonstrates that specific forms of selenium (e.g., SEL-PLEX) possess the ability to alter expression of genes associated with disease and/or aging while other forms of selenium (e.g., selenomethionine) do not.

The invention provides a polyphenylene oxide composition used for a photovoltaic junction box. The composition comprises the following components by weight: 55-95 parts of polyphenylene oxide, 45-5 parts of styrene resin, 2-10 parts of a flexibilizer, 5-20 parts of a phosphate fire retardant, 0.5-2.5 parts of an acid absorbent, 0.2-0.6 part of a hindered phenol main antioxidant, 0.2-0.6 part of a phosphite auxiliary antioxidant, 0.3-1.5 parts of an ultraviolet absorbent, 0.3-1.5 parts of a hindered amine light stabilizer, 0.1-0.5 part of a lubricating agent, and 0.1-1.0 part of toner. With the characteristics of good flame resistance, thermo-oxidative aging resistance, UV (ultraviolet) resistance, excellent electrical performances, the composition of the invention has flame retardancy up to grade UL945VA, RTI (relative temperature index)=110DEG C, CTI (comparative tracking index) PLC ( programmable logic controller)=2, and GWIT (glow wire ignition temperature)=750DEG C, thus satisfying the requirements in ROHS (restriction of hazardous substances) standard. Thus, the composition provided in the invention can be used for electronic and electrical component production of solar photovoltaic junction boxes, etc.

The invention discloses single-core cable insulating rubber for a low-smoke and zero-halogen flame-resistant rail vehicle with rated voltage of 3000V and temperature resistance of a 125 DEG C level. The single-core cable insulating rubber comprises the following components in parts by weight: 100 parts of crude rubber, 2-6 parts of organic peroxide curing agent, 1-5 parts of auxiliary curing agent, 1-4 parts of coupling agent, 3-8 parts of anti-aging agent, 10-25 parts of strengthening agent and 5-10 parts of plasticizing agent. The single-core cable insulating rubber has excellent insulating property and is very soft. A cable produced by the rubber is soft and is easy to bend, install and lay. The single-core cable insulating rubber has excellent insulating property, can continuously and normally work at voltage of 1000V and high temperature of 125 DEG C, can resist climates, ozone, heat, ageing, acid, alkali and fuel oil well and has low-smoke and zero-halogen flame resistance, environmental protection, safety and long service life.

The present invention belongs to the field of transparent ceramic material technology, and is especially preparation process of submicron transparent crystal alumina ceramic possessing high linear transmittance. The transparent alumina ceramic is prepared with high purity alumina and nanometer zirconia additive, and through drying pressing and cold isostatic pressing or gel injecting to form, low temperature pre-sintering and hot isostatic pressing sintering. It has ceramic body relative density greater than 99.95 %, average crystal size not greater than 0.5 micron, Vickers hardness of 2200, bending strength of 650-800 MPa and linear transmittance at 600 nm greater than 60 %. It is suitable for use in making transparent bulletproof armoring, high temperature observation window, false teeth, etc.

The invention discloses a culture method for ecological aged cellar mud, comprising the following steps: mixing high-quality cellar sediment with distilled water to prepare multifunctional bacteria liquid, mixing solids like rice flour to form a culture medium and pouring the multifunctional bacteria liquid into the culture medium to prepare a multifunctional strain culture fluid; mixing an esterified Red Koji activating solution, a yeast extract activating solution and an aroma-producing yeast activating solution, adding substances like Daqu powder into the mixed solution, stirring the solution, adding the multifunctional strain culture fluid, adding yellow water, and sealing and keeping the solution at a certain temperature to prepare a cellar mud culture fluid; mixing and spreading loess, peat and the like, scattering solids like Daqu powder into the mixture under stirring and pouring moistening materials like yellow water into the mixture so as to form a mud embryo; adding the esterified Red Koji activating solution, the aroma-producing yeast activating solution and the cellar mud culture fluid into the mud embryo with stirring, putting the mud embryo into a fermenting tank and sealing the fermenting tank with the cellar mud culture fluid for fermentation. The invention enables the shortcomings that inorganic artificial cellar is easy to degrade and enterprises have to replace new cellar mud every year to be overcome and good living environment to be maintained for microbes in cellar mud, and is beneficial for promoting cellar mud to ripen and fermented grains to produce fragrance and yield ester.