31results about How to "Long-term degradation" patented technology

There is disclosed herein an apparatus for electromagnetic forming of a workpiece with enhancements that increase the durability and overall efficiency of the solenoid coil. The apparatus includes reinforcement members dispersed through the solenoid coil and a cooling system. The apparatus also includes a shaper that varies in girth effectively acting as a force concentrator. The electromagnetic forming device is also capable of incrementally heat treating the workpiece and reducing residual stresses in the workpiece. The invention further discloses a more efficient way of manufacturing the solenoid coil.

A biomedical electrode for transmitting and / or receiving electrical signals to / from a patient is disclosed. The electrode includes a metalized fabric, wherein metallization of the fabric is connected at least on a top side and a bottom side of the fabric so as to uniformly transmit or receive the electrical signals. A conductive gel adhesive in contact with the metalized fabric. The electrode can be fabricated using a continuous web process, thereby reducing the cost of manufacturing the electrode.

In sophisticated semiconductor devices, an asymmetric transistor configuration may be obtained on the basis of a strain-inducing semiconductor alloy. To this end, strain relaxation implantation processes may be performed at the drain side according to some illustrative embodiments, while, in other cases, the deposition of the strain-inducing alloy may be performed in an asymmetric manner with respect to the drain side and the source side of the transistor.

A method and a system for detecting an impact on an impeller wheel of an aircraft engine. A device acquires a revolutions per minute of the engine and a series of deflection signals representative of the deflections on the blades of the impeller wheel at the revolutions per minute. A device constructs signals for detecting impact on the impeller wheel by correlating each of the deflection signals with a predetermined signature of a shock on a blade at the revolutions per minute.

A membrane electrode assembly (MEA) for a fuel cell which exhibits enhanced reversal tolerance. In particular, a layer of iridium or an iridium compound, preferably metallic iridium or iridium oxide supported on TiO2, is provided on the anode to electrolyze available water and pass the majority of the current during a reversal of the fuel cell, thereby preventing damage to the MEA. The iridium or iridium compound is applied to an anode structure according to a predetermined pattern, with only part of the anode active area containing Ir. The parts of the MEA that do not contain Ir are not expected to suffer degradation from Ir cross-over, so that overall degradation of the cell will be diminished. Having less precious metals will also translate into less cost.

There is provided a process for sealing a coolant plate to an adjacent bi-polar plate or coolant plate in an electrochemical cell. The first coolant plate comprises at least one mating region for mating with a complementary region on the adjacent plate, the adjacent plate is a second coolant plate or a bipolar plate of the electrochemical cell, and the first coolant plate and the adjacent plate each comprise a polymer and conductive filler. The process comprises the step of welding the mating region to the complementary region to create a seal formed by the polymer at the mating region and the complementary region. Welding may be done using resistance welding or vibration welding processes.

A voltage detector includes a voltage division circuit which outputs a divided voltage based on an input voltage, a comparison circuit which compares the divided voltage and a reference voltage to output a detection signal and a release signal, and a voltage limiting circuit which limits the divided voltage to a preset voltage.

Degradation of an electron emission element by irradiation of the positive ion generated inside a panel is suppressed. A deflection electrode is periodically disposed, and the electron emission region of an electron emission element is disposed so as not to include a center line between adjacent deflection electrodes, so that an electron beam trajectory is deflected and bombardment or irradiation of the generated positive ion to the electron emission region is prevented.

The invention relates to a composite simulated enzyme gel for degrading organic pollutants and its preparation method and application. The method comprises the following steps: (1) dissolving amino acid in deionized water to form an amino acid solution, adding acid to adjust pH=6.5 -7.5, add an equal volume of copper ion solution drop by drop, continue to adjust the pH=6.5-7.5 and stir, after washing several times, freeze-dry the product to obtain simulated enzyme; Add simulated enzymes to the mixture to obtain a mixed solution; adjust pH=3.5-7.5 after stirring and dissolving, and age to obtain a composite simulated enzyme gel containing mesoporous or micropores for degrading organic pollutants, and used to degrade phenols and / or phenols in the environment or dye-like organic pollutants. Compared with the prior art, the present invention controls the speed of enzyme degradation by adjusting the pore size without causing additional pollution to the environment, so as to achieve long-term, stable and efficient degradation effects, and has a good application prospect.

The invention belongs to the technical field of catalytic materials and coatings, and discloses an antibacterial and formaldehyde-removing catalytic material as well as a preparation method and application thereof. Add permanganate, iron salt, oxalate and silver nitrate into water, stir and mix evenly, and react hydrothermally at a temperature of 70-120°C. After the reaction is completed, naturally cool to room temperature, and the solid product is separated, washed, and dried. The powdered antibacterial and formaldehyde-removing catalytic material is obtained. The antibacterial and formaldehyde-removing catalytic material is stirred and mixed with titanium dioxide, styrene-acrylic emulsion and water, and then an auxiliary agent is added to stir and mix evenly to obtain an antibacterial and formaldehyde-removing coating. The catalytic material obtained in the invention can efficiently catalyze and oxidize the formaldehyde under the condition of room temperature and no light, and degrade the formaldehyde into harmless carbon dioxide and water. The obtained antibacterial and formaldehyde-removing paint can be well applied on artificial boards, plastic wallpapers and walls, and is safe, non-toxic and free from any peculiar smell. It can degrade formaldehyde more quickly, safely and for a long time.