232results about How to "Increase field strength" patented technology

A magnetic write head for use in perpendicular magnetic data recording. The write head includes a write pole and a trailing shield having a tapered surface. A return pole stitched to the trailing shield is magnetically connected with the write pole at a location away from the air bearing surface (ABS).

A touch sensors with improved topological equivalence between an equipotential space and a Cartesian space to which the equipotential space will be mapped. The touch sensor comprises a substrate with a touch region, and a set of electrodes that are electrically coupled to the touch region. The touch sensor further comprises a plurality of resistive band segments that frames the touch region. The electrodes are located between the resistive band segments. Each resistive band segment has a resistivity that is intermediate between the resistivity of the electrodes and the resistivity of the touch region, thereby providing a transition between the low resistivity electrodes and the high resistivity touch region, and improving the topological equivalence within the corners of the touch region. At least one of the band segments has a non-uniform linear resistance to provide further improvement to the topological equivalence.

A system and method for tracking articles and controlling inventory thereof on a real time basis comprising the use of a tag assembly including a plurality of tags including both active tags and passive tags distinguishable from one another by the provision of a self contained power source in the active tags. One or more readers are disposed within a locale being monitored and are structured to communicate received data transmission from a host controller, for additional administrative processing in terms of determining the existence, location and / or movement of various articles with which the plurality of tags are directly associated. Depending on their category the tags may be activated by either entering an electric field of a predetermined first frequency or by receiving an activation signal from the reader assembly also transmitted at the first predetermined frequency. Communication between the tags and the reader occurs at a second frequency being different from the first frequency.

Methods and systems for spatially resolved spin resonance detection in a sample of material are disclosed. Also disclosed are methods and systems for spatially resolved impedance measurements in a sample of material. The disclosed methods and samples can be used in screening of plurality of biological, chemical and material samples.

A process for preparing crystalline sugar by providing a solution of a solvent and sugar, exposing the solution to a magentic field having a strength which is sufficient to impart improvements in the processing of the sugar or the properties of the resulting crystalline sugar product, and providing conditions suitable for crystallization to obtain a substantially crystalline sugar product. The magnetic field strength is sufficient to influence at least one of morphology, size, nucleation rate or, crystallinity of the crystalline sugar product.

The invention discloses ultrasound dynamic elastic imaging probe and method. The probe internally comprises an imaging transducer with higher frequency and exciting transducers with lower frequency, wherein the imaging transducer is arranged in the middle, and the exciting transducers are arranged at both sides of the imaging transducer; the imaging transducer and the exciting transducers synchronously work in a coupling mode; ultrasonic radiometric force generated by the exciting transducers generates shear waves in a tissue, and the transverse propagation of the shear waves causes the longitudinal displacement of the tissue; and the imaging transducer transmits ultrasonic waves to detect the longitudinal displacement of the tissue and then reconstructs an elastic physical quantity according to a wave equation so as to acquire an elastic image of the tissue. In the invention, the transducers with lower frequency are used for exciting the tissue to generate the shear waves, and the generated shear waves have strong intensity and wider effective exciting range; and meanwhile, the traditional transducer with higher frequency is used for imaging the shear waves, and the elastic image has high signal to noise ratio and high image quality and conforms to the standard of national acoustic power.

The invention discloses a magnetic coagulation mine water underground purification technology, relates to a method for carrying out a multistage treatment and purification on sewage generated in the mining industry, and aims to provides a purification technology having the advantages of capability of being carrying out in underground, short purification and separation time, little occupied space, little usage amount, low operation cost, and good purification effect. The technology comprises the following steps: converging the mine water to the front end of an underground central water chamber, filtering to remove the slag, introducing the water into a pre-precipitation tank, wherein in the pre-precipitation tank the sludge is periodically discharged into a sludge tank by a submerged sludge pump; introducing the water, which has been processed in the pre-precipitation tank, into a magnetic coagulation system, adding magnetic powder and a coagulating agent into the water, wherein in this process the suspended matters are transformed into micro floccules taking magnetic powder as the carriers; introducing the water into a magnetic separator after the coagulation, introducing the clean water into an underground water tank after the solid-liquid separation; transferring the coal sludge in the magnetic separator to a magnetic separating magnetic drum so as to absorb and recycle the magnetic powder, then discharging the coal sludge from which magnetic powder has been recycled into a sludge tank, and finally dehydrating the sludge in the sludge tank by a press filter so as to obtain dry sludge cakes.

An electrosurgical instrument includes a body portion, an actuator, a first jaw having a first electrode and a second jaw. The first electrode has a relatively large area seal surface with a relatively small edge portion and a third electrode, and the second jaw has a second electrode having a relatively large area seal surface and a smaller edge portion. The actuator moves the jaws between an first, open position, a second position for grasping tissue, and a third position where the jaws are further closed such that the first and second seal surfaces are adjacent each other and only the edge portions are exposed. An electrosurgical generator is connected to deliver a coagulation RF waveform between the first and second jaws when in the second position, and to deliver a cutting RF waveform between one or both of the first and second electrodes and the third electrode when the jaw members are in the third position.

MRI method and apparatus using simultaneous image refocusing of multiple MRI slices that have different phase histories imparted by applying different amount of additional energy to the different slices before the first refocusing, in combination with applying novel fid spoiling that suppresses interference between stimulated echoes and spin echoes of different slices while allowing non-interfering stimulated echoes to be added to the appropriate primary echoes.