165results about How to "Limited use" patented technology

A method for controlling and compensating aging in an LED device includes measuring a performance change in light output of the LED device. The LED device is controlled with a first compensation algorithm derived from the measured performance change, during a first period, to effect a luminance change over time in the light output of the LED device. Subsequently, a second compensation algorithm, derived from the measured performance change, and different from the first compensation algorithm, during a second period, effects a second luminance change over time in the LED device's light output. The second luminance change over time in the second period is different from the first luminance change over time in the first period. Furthermore, the first and second periods together are less than the lifetime of the LED device.

The invention discloses a fresh keeping agent containing essential oil, for fruits, and an application. The fresh keeping agent for fruits is characterized by being compounded from lysozyme, tea polyphenols, nisin, essential oil A, essential oil B, Vc and distilled water in a certain proportion. According to the fresh keeping agent for fruits, disclosed by the invention, the essential oil is optimized to be used as a main component of the fresh keeping agent, so that the fresh keeping agent has excellent effects of bacteriostasis and oxidation resistance and is applied to corrosion resistance and fresh keeping of the fruits, the fresh keeping and storage period of the fruits can be greatly prolonged, the fruits are guaranteed to maintain original quality in the fresh keeping period, and the quality of the fruits is effectively guaranteed. The fresh keeping agent for the fruits, disclosed by the invention is simple in compounding method, and convenient to apply; and the fresh keeping agent is completely compounded from natural components, and harmful chemical substances are not added, so that the fresh keeping agent is safe and environmental-friendly, and has an important industrial value.

The invention discloses a fraud user detecting method, a fraud user detecting device and a fraud user detecting system. The fraud user detecting method comprises analyzing data which are extracted from an attempt calling bill or short message calling bill of a user in a detecting period according to a preset fraud identification rule, thereby identifying the fraud user. The fraud user detecting method detects fraud behaviors based on the attempt calling bill or the short message calling bill and can detect the fraud user efficiently in time.

The invention provides an electric power control socket, comprising socket holes, a shell, an electric power control device and a microswitch. The electric power control device comprises a fingerprint scanning unit, a fingerprint matching unit and a controlling unit. The scanning part of the fingerprint scanning unit is arranged on the shell, and the fingerprint scanning unit, the fingerprint matching unit and the controlling unit are connected in sequence. The microswitch is arranged at the back of the socket holes, and is used for processing circuit when a plug is inserted into the socket holes, thereby realizing the control for the electric power through the controlling unit according to the matching result of the finger print. The electric power control socket of the embodiment of the invention controls the electric power of the socket through the fingerprint authentication and the microswitch, and greatly improves the security of electric power utilization without the worry of electric shock accident caused by the playing of the socket of the kids.

The invention relates to the technical field of fluorochemical preparation, particularly a preparation method of perfluoroheptanoic acid. The method comprises the following steps: oxidizing dodecafluoroheptanol to obtain dodecafluoroheptanoic acid, carrying out reaction on the dodecafluoroheptanoic acid and thionyl chloride to obtain dodecafluoroheptanoyl chloride, carrying out fluorination on the dodecafluoroheptanoyl chloride to obtain perfluoroheptanoyl chloride, and hydrolyzing to obtain the perfluoroheptanoic acid. The technical process of preparing perfluoroheptanoic acid from dodecafluoroheptanol has the advantages of low energy consumption, no pollution and high yield (up to 75% or above), is easy to operate, and has higher competitive edges than the existing perfluoroheptanoic acid production technique.

The invention provides a high-gloss low-warp polycarbonate reinforced flame-retardant material which comprises the following components in percentage by weight: 30-70% of aromatic polycarbonate, 10-30% of siloxane PC, 5-30% of inorganic mineral fillers, 0.1-2% of an anti-drip agent, 0.1-5% of silicone, 5-30% of glass fibers, 0.06-1.0% of a sulfonate flame retardant, 0.3% of an antioxidant and 0.5-10% of a CBT fluidity improver, wherein the siloxane PC is capable of effectively improving the impact resistance of the material; the adopted silicone flexibilizers are capable of improving the impact strength of the materials and improving the machinability, floating fibers and flame-retardant property of the materials; a composite reinforcing medium has obvious improvements in the aspects of product surface and warp; therefore, the product disclosed by the invention can be well applied to thin-walled products, in-mold insert injection molding, consumer electronics appearance parts and the like.

A device and a method for detecting the abnormality of a cylinder pressure sensor which can detect the abnormality of a loss of preload of the cylinder pressure sensor. The cylinder pressure sensor (5) includes a strain gauge element (20) to which a preload is applied. The device determines whether the ratio Pim / Pex of an intake pressure Pim to an exhaust pressure Pex is 1.0 or not while an internal combustion engine is operated, and when the ratio Pim / Pex is 1.0, resets a temperature drift. The device determines that the abnormality of a loss of preload occurs when V(Pim), on the basis of which Pim is calculated, matches a circuit limit value Vmin after the temperature drift is reset.

The invention provides a scaling corrosion inhibitor and a preparation method thereof, and relates to the technical field of a water treatment chemical. The scaling corrosion inhibitor is prepared from the following raw materials of 2-phosphono-butane-1,2,4-tricarboxylic acid (PBTCA), 2-hydroxyphosphonoacetic acid (HPAA), acrylate copolymers (HB-901), polyaspartic acid (PASP) and a foam discharging agent according to the matter quantity ratio of (2 to 3):(2 to 3) :(5 to 8) :(10 to 15) :(5 to 8). The preparation method of the scaling corrosion inhibitor comprises the steps of 1, mixing the materials to obtain a mixed solution; 2, preparing the foam discharging agent; 3, adding the mixed solution into a polyaspartic acid water solution; performing reaction for 50 to 60 minutes; adding the foam discharging agent; performing stirring for 5 to 6 hours at 40 to 50 DEG C; preparing the scaling corrosion inhibitor. The scaling corrosion inhibitor belongs to a scaling corrosion inhibitor for preventing corrosion of the pipeline and equipment; the dual efficacies of scale inhibition and corrosion inhibition are achieved; the scaling corrosion inhibitor is a complex reagent; certain biodegradability is realized; green and environment-friendly effects are achieved; the application range is wide.

The invention relates to an identification method of inside and outside network messages, which is a method widely used for preventing network intrusion in a safety system and a network audit safety system for monitoring network messages. The identification method comprises an internet, a local area network, a computer terminal, a server, a workstation and a router, and comprises the steps of reading the network messages, obtaining TTL numerical values, analyzing and recording. The invention identifies the inside and the outside network messages according to the characteristics of the networkmessages, confirms the inside and outside network messages according to the decrement amounts of the TTL numerical values and identifies the inside network messages, the outside network messages and abnormal network messages according to the relation between the TTL numerical values and inside and outside network identification words. The method has very simple treatability method and very limited usage resources without special configurations and can achieve fast speed. The areas that attacking events occur can be confirmed by identifying the inside and outside network messages.

The invention relates to the technical field of thermal barrier coating protection, in particular to a method for preparing a thermal barrier coating CMAS-alienated surface with a micro-nano structureby utilizing picosecond laser. According to the method, the micro-nano structure is prepared on the surface of a thermal barrier coating through the picosecond laser, the material of the thermal barrier coating does not need to be changed, the three-layer structure of a traditional thermal barrier coating does not need to be changed, and therefore the thermophysical performance and the using performance of the coating cannot be affected. On the basis of maintaining the original performance of the thermal barrier coating, the surface micro-nano structure is beneficial to reducing the surface contact area between CMAS and the coating, reducing the adhesion force, and remarkably increasing the contact angle of the molten CMAS on the surface of the thermal barrier coating, so that the CMAS rolls away from the coating, the coating is physically isolated from the CMAS, and the CMAS corrosion resistance of the thermal barrier coating is greatly improved.

The energy meter for measuring the amount of electrical energy consumed comprises an electrical display (11) for displaying energy information corresponding to the electrical energy consumed. The display (11) is configured to change the energy information displayed by means of energy supplied by an energy source. It is configured such that when the energy supplied by the power source is interrupted the energy information displayed remains visible.

The invention discloses a combretastatin nanometer polymer micelle freeze-dried preparation. The combretastatin nanometer polymer micelle freeze-dried preparation comprises a methoxy polyethylene glycol-polyester block copolymer carrier material and combretastatin. Combretastatin is wrapped by the copolymer carrier material. A mass ratio of combretastatin to the copolymer carrier material is 0.01-0.15. The copolymer carrier material is a block copolymer prepared from a mixture of one or more polyester monomers and methoxy polyethylene glycol by ring opening polymerization. A mass ratio of methoxy polyethylene glycol to polyester is 1: 0.55-2. The polyester monomer is one of D, L-lactide, glycolide, caprolactone and trimethylcarbonate. Through optimization of a mass ratio of polyester to polyether of the block copolymer, a mass ratio of combretastatin to the carrier is further optimized. After water redissolution, greater than 90% entrapment rate lasting time of the combretastatin micelle preparation is 12h or more, accords with clinical medicine application physical truth and satisfies clinical requirements.