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297 results about "Rise over thermal" patented technology

In wireless communication systems, the rise over thermal (ROT) indicates the ratio between the total interference received on a base station and the thermal noise. The ROT is a measurement of congestion of a cellular telephone network. The acceptable level of ROT is often used to define the capacity of systems using CDMA (code division multiple access).

Battery and process for preparing the same

A conventional battery has a problem that a large short-circuit current is generated with temperature rise due to internal short-circuit, and therefore, the temperature of the battery further increases due to heat and the short-circuit current is increased. Also, there is a problem in safety that the sealed part can be easily opened with temperature rise in case of using the aluminum laminated bag as the outer body for sealing the battery body. The present invention has been carried out in order to solve the above problems. The battery of the present invention is a battery wherein at least one of the positive electrode 1 and the negative electrode 2 comprises the active material layer 6 containing the active material 8 and the electronically conductive material 9 contacted to the active material 8; wherein the battery body 11 is constructed by containing the electrolytic layer 3 between the above positive electrode 1 and negative electrode 2, and the above battery body is sealed with the outer body 14 comprising the aluminum 13 and the thermal fusion resin 12; and wherein the electronically conductive material 9 comprises the electrically conductive filler and the resin so that the resistance increases in accordance with temperature rise.
Owner:MITSUBISHI ELECTRIC CORP

Laser driver and temperature compensation circuit thereof

InactiveCN101453270AHas a constant extinction ratioStable output optical powerElectronic switchingElectromagnetic transmissionOptical powerVoltage reference
The invention discloses a laser driver and a temperature compensation circuit thereof. The temperature compensation circuit comprises a benchmark voltage generation unit, a benchmark current generation unit, a reference voltage generation unit, and a compensation current generation unit, wherein the benchmark voltage generation unit generates a benchmark voltage which increases with the increase of the temperature; the benchmark current generation unit is connected with the benchmark voltage generation unit and outputs benchmark current which increases with the increase of the benchmark voltage; the reference voltage generation unit generates a reference voltage which increases with the increase of the temperature; the compensation current generation unit is connected with the reference voltage generation unit, obtains the compensation threshold temperature according to the reference voltage, and outputs compensation current when the temperature is higher than or equal to the compensation threshold temperature; and the benchmark current and the compensation current are overlapped to form benchmark modulation current. The laser driver comprises the temperature compensation circuit and a bias current regulation circuit. An optical signal output by the laser can have constant extinction ratio by compensating modulation current of a laser through the temperature compensation circuit, and the laser can obtain steady output optical power by compensating bias current of the laser through the bias current regulation circuit.
Owner:JIANGNAN INST OF COMPUTING TECH

Garbage burning fly ash sintering harm-eliminating resource-utilization treatment system

The invention relates to a garbage burning fly ash sintering harm-eliminating resource-utilization treatment technology. According to the invention, garbage burning fly ash is mixed with premixed coal and auxiliary materials; the mixture is granulated and shaped; and the material is dried and is sintered in a rotary kiln. During the sintering process, when the temperature is increased and a coal ignition point is reached, the premixed coal is spontaneously combusted. Therefore, external coal dose can be reduced. Initial combustion of the premixed coal can provide a reductive atmosphere, such that dechlorination and detoxification of dioxin in fly ash can be benefited. Large amount of gas is produced by subsequent combustion, such that dust pores and holes are produced on inner and outer parts of the sintered body, and heavy metal volatilization can be promoted, and fly ash sintered body with low heavy metal content and leaching amount can be obtained. The sintered body has no potential harm to the environment, such that fly ash harm-eliminating and resource-utilization are sufficiently realized. During the processing process, smoke and secondary fly ash production amounts are low, and heavy metal and acidic component contents are high. In deacidification and heavy metal stabilization processes, agent utilization rate is improved. Compared with a traditional original fly ash curing/stabilizing process, a landfill amount can be reduced by 80-90%, such that pressure caused by serious landfill space shortage can be effectively relieved.
Owner:TIANJIN YIMING ENVIRONMENTAL TECH CO LTD

Method and apparatus for driving low input impedance power transistor switches

An adaptable, low-power drive circuit for transistor switches requiring control input current is disclosed. In one embodiment of the invention, a current source output replaces the prior art voltage drive circuits and associated external current-limiting resistor. The current-source drive circuit provides both a high impedance as well as variability. The high impedance of the current-source drive circuit enables a reduction in the value of the resistance-bypass capacitor employed in the prior art. The variability in the output current provided by the current-source circuit allows the drive circuits to optimize the control current flowing into the switch device as the characteristics of the switch device change with operating temperature. The drive circuit is capable of providing as output either a desired current, at a high output impedance, or a desired voltage, at a low output impedance, employing a shared amplifier and output transistor. The drive circuit also derives current from the much lower output voltage of the buck conversion system that the invention is used in. This minimizes the static power dissipated in driving the switch, and also minimizes the energy expenditure incurred in increasing the output current to modulate the power switch resistance that increases with increasing temperature.
Owner:NAIR RAJENDRAN

X-ray developing thermotropic hydrogel and preparation method thereof

ActiveCN104645356APossesses thermally induced gelation propertiesGood injectabilityAerosol deliverySurgeryTissue repairEmbolization Agent
The invention belongs to the technical field of medical polymer materials and in particular relates to X ray developing thermotropic hydrogel and a preparation method thereof. The X ray developing thermotropic hydrogel comprises an iodine-containing amphiphilic block copolymer and a solvent, wherein the iodine-containing amphiphilic block copolymer is obtained by bonding an iodine-containing micromolecule and an amphiphilic block copolymer by virtue of a covalent bond, and thermotropic gelatinization phase transformation can be carried out on a water system of the X ray developing thermotropic hydrogel along with temperature increase. The thermotropic hydrogel can be implanted under the skin and implanted into an abdominal cavity, an articular cavity and other specific parts of a human body in a mode of injection, and in situ formed hydrogel has good X ray developing performance, clear positioning and long-term tracing observation can be carried out on the hydrogel by adopting an X ray radiography technique. The thermotropic hydrogel also can serve as a medicine controlled release carrier, a tissue repairing support, a blood vascular embolization agent, a tissue marker and the like and can be used for realizing integration of diagnosis and treatment.
Owner:FUDAN UNIV
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