Abstract: Systems, methods and devices are configured for integrated parallel reception, excitation, and shimming (iPRES). Parallel transmit/receive (which can include B1 shimming and/or parallel imaging capabilities) and B0 shimming employ the same set of localized coils or transverse electromagnetic (TEM) coil elements, with each coil or TEM element working in both an RF mode (for transmit/receive and B1 shimming) and a direct current (DC) mode (for B0 shimming) simultaneously. Both an RF and a DC current can flow in the same coil simultaneously but independently with no electromagnetic interference between the two modes. This invention is not only applicable when the same coil array is used for parallel transmit, receive and shim, but also when two separate coil arrays are used. In that case, the B0 shimming capability can be integrated into one of the coil arrays (i.e. a transmit array with B1 shimming capability or a receive array), thereby increasing the flexibility and practical utility of the iPRES technology.

Abstract: Systems and methods for magnetic resonance imaging (“MRI”) using a frequency swept excitation that utilizes multiple sidebands to achieve significant increases in excitation and acquisition bandwidth are provided. The imaging sequence efficiently uses transmitter power and has increased sensitivity as compared to other techniques used for imaging of fast relaxing spins. Additionally, the imaging sequence can provide information about both fast and slow relaxing spins in a single scan. These features are advantageous for numerous MRI applications, including musculoskeletal imaging, other medical imaging applications, and imaging materials.

Abstract: An exemplary embodiment of the present invention provides a method for determining root causes of issues in an electrical grid. The method includes receiving local data from each of a plurality of meters. The local data may be indicative of voltage levels measured by the plurality of meters. The method also includes identifying abnormalities in the received local data. An abnormality is indicated by local data indicative of a voltage level that is outside of a predetermined range of acceptable levels. The method further includes associating each of the identified abnormalities with a respective meter and a geographic location of the respective meter and analyzing each of the identified abnormalities according to a predetermined set of evaluation factors to determine a root cause.

Abstract: A display device including pixels, a pad area, auto-probe test wires (AP wires), and switching transistors is discussed according to an embodiment. The pixels are located in a display area of a lower substrate. The pad area is located in a non-display area of the lower substrate. The non-display area is located outside the display area in which the pixels, gate lines connected to the pixels, data lines connected to touch sensors, and sensor lines connected to the touch sensors are placed. The AP wires are located in the non-display area and connected to the display area. The switching transistors are located in the non-display area, between one side and the other side of the AP wires.

Abstract: Methods and systems for sourcing and/or sinking current from power supplies of differing voltage levels. A driving circuit may, for example, receive power from first and second power supplies, where the first power supply provides current to the driving circuit at a first voltage level and the second power supply provides current to the driving circuit at a second voltage level, and where the first voltage is greater than the second voltage. As a result, the first power supply allows the driving circuit to provide current over a wide voltage range, and the second power supply allows the driving circuit to provide current at lower voltages with less power consumption.

Abstract: A monitoring system is applied to an electrical system, which includes a DC power source and an electrical apparatus that is connected to the DC power source by a pair of electric power leads incorporating respective switches. To detect leakage current from the DC power source, a low-frequency AC signal is applied via a large-capacitance capacitor to a specific connection position, between a first terminal of the DC power source and the corresponding switch, and the resultant voltage of that signal is measured. To detect a short-circuit failure of one or both of the switches, a high-frequency AC signal is applied via a low-capacitance capacitor to the specific connection position, and the resultant signal voltage is measured. Judgement as to occurrence of leakage current and/or short-circuit failure is based on the measured signal voltage values.

Abstract: 3D printing in MRI-compatible plastic resin has been used to fabricate and implement a geometric distortion phantom for MRI and CT imaging. The sparse grid structure provides a rigid and accurate phantom with identifiable intersections that are larger than the supporting members, which produces images that are amenable to fully automated quantitative analysis using morphometric erosion, greyscale segmentation and centroiding. This approach produces a 3D vector map of geometric distortion that is useful in clinical applications where geometric accuracy is important, either in routine quality assurance or as a component of distortion correction utilities.

Abstract: A superconducting magnet assembly includes a cryostat, a vacuum vessel and a refrigeration stage. An NMR probe using the assembly includes comprises cooled probe components, a two-stage cryocooler, and a counter flow heat exchanger. A cooling circuit guides coolant from one outlet of the counter flow heat exchanger back to an inlet of the counter flow heat exchanger via the second cooling stage, a cooled probe component, and a heat exchanger in the cryostat or a heat exchanger in a helium suspension tube. Both the intake temperature of the coolant flowing into the heat exchanger in the cryostat or in the suspension tube and the return flow temperature of the emerging coolant are at least 5 K lower than the operating temperature of the first cooling stage. Excess cooling capacity of the cryocooler reduces the evaporation rate of liquid helium or cools a superconducting magnet in a cryogen-free cryostat.

Abstract: A measurement device comprises a high permittivity dielectric resonator (10) with a low microwave loss tangent and having at least a first symmetry axis (z-i); an electrically conductive resonance chamber (100) containing and geometrically similar to the resonator (10) and having a second symmetry axis (z2) coincident with the first symmetry axis (z-i); the resonance chamber (100) having a plurality of similar ports (104) orthogonal to the first symmetry axis (z-i), each such port (104) having a microwave antenna (114), either to inject microwaves into the resonance chamber, thereby to excite an electric field in the resonator, or to receive microwaves from the resonance chamber; and a comparator circuit (200, 300, 400, 500, 600, 700, 800) connected to a first one (P1) of the plurality of ports (104) to inject microwaves into the resonance chamber and to another (P2, P3) of the plurality of ports (104) to receive microwaves from the resonance chamber; wherein the measurement device further comprises an electr

Abstract: In a circuit board testing apparatus for performing a four-terminal measurement method on a wiring pattern formed of a plurality of wires on a circuit board, a control part connects in series contact probes to be connected to upstream-side voltage detection terminals or downstream-side voltage detection terminals, via connection terminals, allows a power supply part to apply power between the test points with which the contact probes connected in series are in contact, allows a voltage detection part to detect a voltage between the test points, and makes a determination as to conductive contact states of the contact probes with the test points, based on the detected voltage.

Abstract: The invention relates to a magnetic resonance imaging system (100) for acquiring at least one set of k-space blade data from an imaging zone of a subject (118), wherein the magnetic resonance imaging system (100) comprises a memory (138) for storing machine executable instructions and a processor (130) for controlling the magnetic resonance imaging system (100), wherein execution of the machine executable instructions causes the processor (130) to perform for each blade of the at least one set of k-space blade data: control the MRI system (100) to acquire at least one k-space blade data using at least one echo time for purposes of performing a Dixon technique, wherein k-space blade data are acquired in accordance with a blade shape; reconstruct at least one blade image data using the at least one k-space blade data; generate water blade image data and fat blade image data using the at least one blade image data; and transform the water and fat blade image data to water and fat k-space blade data respectively

Abstract: A high-voltage power transmission system is used as an extremely large antenna to extract spatiotemporal space, physical, and geological information from geomagnetically induced currents (GIC). A differential magnetometer method is used to measure GIC and involves acquiring line measurements from a first fluxgate magnetometer under a high-voltage transmission line, acquiring natural field measurements from a reference magnetometer nearby but not under the transmission line, subtracting the natural field measurements from the line measurements, and determining the GIC-related Biot-Savart field from the difference. NASA warning and alarm systems can be triggered based on determinations of GIC amplitude levels that exceed a set threshold value.

Abstract: A magnetic resonance imaging apparatus according to an embodiment includes: an obtaining unit, a correction coefficient deriving unit, an amplification degree deriving unit, and a filtering processing unit. The obtaining unit obtains a distribution of a radio frequency magnetic field. The correction coefficient deriving unit derives, on a basis of the distribution of the radio frequency magnetic field, a transmission correction coefficient used for correcting a transmission unevenness. The amplification degree deriving unit derives, for each of pixels, an amplification degree by which noise components are amplified in the image due to the correction, on the basis of either the distribution of the radio frequency magnetic field or the transmission correction coefficient. The filtering processing unit performs a filtering process according to the amplification degree on each of the pixels in the image to which the correction is applied.

Abstract: A method for manufacturing a magnetism measurement device which measures a magnetic field generated from a living body, includes: arranging an ampoule made of borosilicate glass and having a hollow part filled with a solid alkali metal, in a void in a cell section made of quartz glass, and then sealing the cell section; and casting a pulse laser beam on the ampoule through the cell section and thus forming a penetration hole in the ampoule. The pulse laser beam has an energy of 20 ?J/pulse to 200 ?J/pulse. The absorption coefficient of quarts glass for the pulse laser beam is lower than the absorption coefficient of borosilicate glass for the pulse laser beam.

Abstract: A magnetic field sensor includes a plurality of transducer legs coupled together as a first circuit to sense a magnetic field, wherein each transducer leg comprises a plurality of magnetoresistance sense elements. The magnetic field sensor also includes a second circuit including a first plurality of current lines, wherein each current line of the first plurality of current lines is adjacent to a corresponding plurality of magnetoresistance sense elements of a transducer leg of the plurality of transducer legs. When at least one current line of the first plurality of current lines is energized, a magnetization of each magnetoresistance sense element of the transducer leg is aligned in a first direction or a second direction opposite to the first direction. A routing pattern of the at least one current line is configured to generate an equal population of magnetoresistance sense elements with magnetization aligned in the first and second directions.

Abstract: Methods, systems, computer programs, circuits and workstations are configured to generate MRI images using gradient blips for signal acquisition and reconstruction using dynamic field mapping, TE corrections and/or multischeme partial Fourier images.

Abstract: A field-effect transistor includes a source electrode, a drain electrode, and a control electrode. The control electrode is configured as a heating unit having two terminals for receiving a heating voltage for heating the control electrode. The heating unit is configured as a meander-type heating element. A current-measuring device is configured to detect a current flowing between the source electrode and the drain electrode.

Abstract: Sensor assemblies are described for measuring isotropic, anisotropic, or directionally dependent, characteristics of a subterranean formation. Sensor assemblies can include sensors deployed on a tool string. One or more of the sensors can be rotatable relative to the tool string. Rotating one or more sensors relative to the tool string can provide data about the subterranean formation at multiple points around the tool string.

Abstract: An air-fuel ratio sensor control unit connected with an air-fuel ratio sensor including a common terminal, a first terminal and a second terminal includes a common connection terminal connected with the common terminal, a first connection terminal connected with the first terminal, a second connection terminal connected with the second terminal, a voltage control circuit controlling a voltage of the first connection terminal, a resistor connected with the common connection terminal, a voltage sensing circuit sensing a two-end voltage of the resistor, a current applying circuit applying a constant current to the second connection terminal, and a determining unit sensing a change quantity of the two-end voltage by using the voltage sensing circuit and determining whether a disconnection failure of the first connection terminal occurs based on a sensing result of the change quantity.

Abstract: A method of measuring an output resistance of a DUT includes determining an initial output resistance of an n-type transistor, thereby determining an initial gate voltage for the n-type transistor, and determining an initial output resistance of a p-type transistor, thereby determining an initial gate voltage for the n-type transistor. A resistance for a cascode arrangement of the n-type transistor and the p-type transistor is determined, and the output resistance of the DUT using the cascode arrangement is measured by biasing the n-type transistor with the initial gate voltage for the n-type transistor and biasing the p-type transistor with the initial gate voltage for the p-type transistor.