48results about How to "Little disturbance" patented technology

A method that exploits the intrinsic selectivity of steady-state free precession (SSFP) to perform spectral suppression is disclosed. Such a method avoids the need to incorporate additional spectrally selective pulse sequence elements. The scheme is based on breaking the FISP imaging sequence into short trains having, for example, 8–64 RF pulses. At the moment of echo formation (i.e., TE=TR/2) after the last full RF pulse of the train, water signal is z-stored. Residual transverse magnetization, which include isochromats phase-opposed to the on-resonance water, is gradient crushed and RF spoiled. The stored magnetization is subsequently re-excited with little disturbance to the on-resonance steady-state water signal. The additional time required to perform the steady-state interruption is typically as little as a single TR, minimally affecting the efficiency of the imaging process. The sequence can be employed repetitively, greatly reducing the amplitude of fat signals throughout a real-time or cine imaging process.

A thermionic electron emitter (1) is proposed comprising an inner part (2) including a heatable flat emission surface (3) and an outer part (4) including a surrounding surface (6) substantially enclosing the emission surface and a heating arrangement for heating the emission surface to a temperature for thermionic electron emission. The outer part is mechanically connected to the inner part in a connection region (10) apart from the emission surface. Furthermore, the surrounding surface is thermally isolated, e.g. by a gap (14), from the emission surface in an isolation region apart from the connection region. By providing a surrounding surface enclosing the emission surface which may be on a similar electrical potential as the emission surface but which can have a substantially lower temperature than the emission surface without influencing the temperature distribution within the emission surface, an improved electron emission distribution and homogeneity can be obtained.

The present invention describes a method and an apparatus for storing electric energy needed in an elevator system into a supercapacitor. Furthermore, the invention can be used as a source of reserve power in emergency situations, such as power failures. The supercapacitor is connected together with three switching branches to a rectified signal of the power supply of the motor. By closing and opening the switches, the supercapacitor can be charged when the motor load is small. When the motor load is large or when the power supply fails, the electric energy contained in the supercapacitor can be discharged for use by the motor. In an emergency, the motor drives the elevator at a speed lower than normal, and therefore a supply voltage lower than normal is sufficient. Also, energy obtained from braking of the elevator can be stored in the supercapacitor, which has a storage capacity of considerable magnitude as compared to an ordinary capacitor. By applying the invention, the energy consumption of the elevator can be reduced because the waste energy obtained from the power supply can be stored and utilized when more energy is needed.

A hearing protection earpiece having a shell shaped according to conform to the user's concha and ear canal and having an open hollow lateral portion to be inserted into the user's concha and a medial portion to be inserted into at least an outer portion of the user's ear canal, wherein the medial portion of the shell is axially adjacent to the lateral portion of the shell, wherein the lateral portion of the shell forms part of an open portion of the earpiece and the medial portion of the shell forms part of a closed portion of the earpiece, wherein the earpiece provides for a mechanical sound attenuation of at least 10 dB averaged over the audible frequency range, and wherein the lateral portion of the shell has a wall thickness of not more than 3 mm and is shaped to cover at least half of the concha area.

A memory device is provided which comprises an array of bitcells and a plurality of wordlines. Each bitcell of the array of bitcells is selectively coupled to a wordline of the plurality of wordlines and access to a selected bitcell of the array of bitcells requires an asserted voltage on a selected wordline with which the selected bitcell is associated. Read assist circuitry is provided, which is configured, when read access to the selected bitcell is carried out, to implement a reduction in the asserted voltage on the selected wordline, and wherein the read assist circuitry is configured to implement the reduction in the asserted voltage by selective connection of the selected wordline to a further wordline of the plurality of wordlines.

The invention resides in enabling high-mix low-volume production by a compact apparatus for a rubber sheet reinforced with a cord of a belt material for a tire, a body-ply material, etc. variously changing a cord material, cord arrangement angle, width of sheet, etc. and relates to manufacturing apparatus and method for a rubber sheet reinforced with a cord according to wrapping around a rubber coated cord group continuously on a surface of a pair of a cylindrical rotating body rotating in the same direction or on a surface of a cylindrical rotating body disposed small diameter roller groups of plural number on a side surface of a cylinder.

A Group III nitride semiconductor substrate is provided, with diameter of 25 mm or more and thickness of 250 μm or more, wherein in at least an outer edge side part of an outer edge part within 5 mm from an outer edge of the group III nitride semiconductor substrate, stress within a main surface of the group III nitride semiconductor substrate works as a tensile stress, with the tensile stress becoming relatively greater compared to that of a center side part from the outer edge side part of the group III nitride semiconductor substrate.

A system and method for designing photonic band gap structures. The system and method provide a user with the capability to produce a model of a two-dimensional array of conductors corresponding to a unit cell. The model involves a linear equation. Boundary conditions representative of conditions at the boundary of the unit cell are applied to a solution of the Helmholtz equation defined for the unit cell. The linear equation can be approximated by a Hermitian matrix. An eigenvalue of the Helmholtz equation is calculated. One computation approach involves calculating finite differences. The model can include a symmetry element, such as a center of inversion, a rotation axis, and a mirror plane. A graphical user interface is provided for the user's convenience. A display is provided to display to a user the calculated eigenvalue, corresponding to a photonic energy level in the Brilloin zone of the unit cell.

Gas turbine or compressor blade, comprising a convex outer surface or suction side and a concave inner surface or pressure side, these sides being joined at their upstream ends by a leading edge and at their downstream ends by a trailing edge for the gases and terminating on a platform, one part of which includes a downstream fairing that includes at least one through-notch that extends substantially between a transverse line passing through the trailing edge and the downstream end of the fairing.

A speaker system includes a main speaker and a subordinate speaker arranged around the main speaker. A pseudo-spherical wave is generated around the main speaker as a whole such that both speakers are vibrated in the frequency range of piston vibration and are in phase and that the propagation speed of a sound wave produced by the vibration of the subordinate speaker is preferably lower than the propagation speed of a sound wave produced by the vibration of the main speaker.

A method for modernizing an elevator system, includes using a first and second car for transporting passengers and/or goods between vertically displaced floors of a building, and thereafter removing the first elevator car from use for transporting passengers and/or goods between vertically displaced floors, and thereafter installing a construction time elevator into the lower end of the first hoistway, the traveling zone of the car of the construction time elevator covering only partially the height of the first hoistway; and thereafter using the car of the construction time elevator and the second car simultaneously for transporting passengers and/or goods between vertically displaced floors of the building, during which using the method includes performing construction work in the first hoistway above the traveling zone of the car of the construction time elevator; and thereafter changing the traveling zone of the car of the construction time elevator to extend higher in the hoistway, and thereafter using the car of the construction time elevator and the second car simultaneously for transporting passengers and/or goods between vertically displaced floors, during which using the method comprises performing construction work in the first hoistway above the traveling zone of the car of the construction time elevator.

The invention discloses an advanced detection system which comprises at least two advanced detection drill holes, electrodes and an electrical prospecting apparatus used for supplying power and collecting current and voltage, wherein the advanced detection drill holes are located in front of a tunneling head-on, one or more electrodes are arranged in the advanced detection drill holes, and the electrodes are connected with the electrical prospecting apparatus. The invention further provides a method adopting the system. The system and the method have the advantages that the electrodes are arranged in the drill holes, then geophysical prospecting detection work is carried out, the geophysical prospecting advanced detection technology and the drilling advanced detection technology are combined, the water damage distribution situation in front of a tunneling roadway can be accurately obtained, the field drilling workload is reduced, the construction efficiency is greatly improved, and theroadway tunneling work progress is improved.

The present disclosure relates to a device and a method for reinforcing a round section wood beam by the combination of a prestressed Fiber Reinforce Plastic (FRP) sheet and a high strength steel wire rope. The device includes an FRP sheet adhered to a bottom surface of a log beam in the length direction. A middle supporting piece is mounted in the middle of the log beam. An end part reinforcing anchoring piece is mounted at each of two ends of the log beam. FRP hoops are adhered to the log beam and are located between the middle supporting piece and each of the end part reinforcing anchoring pieces at intervals in the length direction. High strength steel wire ropes with both ends connected to the corresponding end part reinforcing anchoring pieces are respectively arranged on the two sides of the middle supporting piece.