Abstract: A coil assembly for use as a transmission and/or receiving coil in an MR system comprises a dipole antenna assembly with multiple dipole antennas. Connection elements are converted from an electrically conductive state to an electrically non-conductive state. In the electrically conductive state, the dipole antennas form a cylindrical volume coil and/or a conductor loop assembly, in particular a flat conductor loop assembly. The connection elements comprise blocking circuits which automatically block when a high-frequency alternating voltage with a frequency corresponding to the blocking frequency of the connection element blocking circuits is applied to the coil assembly.

Abstract: Disclosed is a system for managing a vehicle battery that is chargeable/dischargeable and stores energy for driving a vehicle driving motor. The system for managing the vehicle battery as disclosed includes a controller that measures a polarization voltage of each of a plurality of battery cells in a vehicle battery after charging of the vehicle battery is terminated, and determines whether each of the plurality of battery cells is abnormal based on the measured polarization voltage.

Abstract: In a method for recovering a lithium precursor from a lithium secondary battery, an electrode powder is prepared from a lithium secondary battery. A calcium compound is mixed with the electrode powder to prepare a cathode active material mixture. The cathode active material mixture is reductively treated to form a preliminary precursor mixture. A lithium precursor is recovered from the preliminary precursor mixture. Accordingly, the lithium precursor is obtained with high purity without a complicated leaching process and an additional process resulting from a wet-based process using an acidic solution.

Abstract: Coils and assemblies for magnetic resonance imaging or spectroscopy, and methods for generating or detecting magnetic fields with coils. The coil includes a first loop and a second loop. The first loop includes one or more capacitors. The second loop includes one or more capacitors. The second loop is connected to the first loop by a conductor. A total capacitance of the first loop is different from a total capacitance of the second loop.

Abstract: A dipole antenna array includes at least two dipole antenna elements. Each respective dipole antenna element has at one end a fold which consists of a bend, a bent region, and the projection of the bent region of the dipole antenna element onto a length of the dipole antenna element. Each respective dipole antenna element at least partially encloses a cavity.

Abstract: A electronic device and method for providing store payment service are provided. An electronic device for providing store payment service comprising a processor; and a memory operatively coupled to the processor, wherein the memory, when executed, causes the processor to identify first tracking data of the tracking data corresponding to a first time period including the trigger time point, identify a user candidate group for at least some of the at least one user based on the first tracking data, calculate a first reliability for each of the at least some users included in the user candidate group, identify that a user related to the trigger is a first user based on the first reliability, and store instructions for performing an update related to the trigger for a virtual shopping cart of the first user.

Abstract: A resist topcoat composition and a method of forming patterns utilizing the resist topcoat composition are provided. The resist topcoat composition includes a copolymer including a first structural unit represented by Chemical Formula M-1 and a second structural unit represented by Chemical Formula M-2; and a solvent.

Abstract: The present disclosure relates to an antenna assembly for an imaging method, a use of an antenna assembly and a tomography system, in particular for MRI or simultaneous MR-PET/SPECT. An antenna assembly for an imaging method comprises at least two adjacent antennas, wherein each of the at least two antennas is designed as a J-pole antenna with a radiation section and a feed section. The at least two antennas are arranged alternately at a first angle and a second angle different from the first angle in relation to a reference surface. In this way, effective decoupling of the two antennas is achieved by simple means.

Abstract: The method for recovering lithium hydroxide from a lithium secondary battery allows a powder comprising lithium and valuable metals to be prepared from the lithium secondary battery. The powder is reduced to form a preliminary precursor mixture including a preliminary lithium precursor and valuable metal-containing particles. The preliminary precursor mixture is primarily washed with water (H2O) to generate a lithium precursor aqueous solution and a precipitate. The lithium precursor is recovered through solid-liquid separation of the lithium precursor aqueous solution and the precipitate. The lithium precursor is recovered, through additional washing and solid-liquid separation, from the precipitate obtained through the solid-liquid separation. A calcium compound is added in the primary washing operation or the additional washing operation. Therefore, a highly-pure lithium precursor can be obtained without a complex leaching process and additional processes resulting from a wet process of an acid solution.

Abstract: A double-resonant coil includes a closed conductor loop divided into at least two segments that are each connected via a second connection element configured to be converted from an electrically conductive state to an electrically insulating state. The double-resonant coil further includes an inductor or a capacitor connected in series to a first connection element so as to allow excitation of the closed conductor loop in a dipole mode at one frequency and with a homogeneous power distribution at a second frequency.

Abstract: A dipole antenna array includes at least two dipole antenna elements. Each respective dipole antenna element has at one end a fold which consists of a bend, a bent region, and the projection of the bent region of the dipole antenna element onto a length of the dipole antenna element. Each respective dipole antenna element at least partially encloses a cavity.

Abstract: A coil assembly for use as a transmission and/or receiving coil in an MR system comprises a dipole antenna assembly with multiple dipole antennas. Connection elements are converted from an electrically conductive state to an electrically non-conductive state. In the electrically conductive state, the dipole antennas form a cylindrical volume coil and/or a conductor loop assembly, in particular a flat conductor loop assembly. The connection elements comprise blocking circuits which automatically block when a high-frequency alternating voltage with a frequency corresponding to the blocking frequency of the connection element blocking circuits is applied to the coil assembly.

Abstract: A dipole antenna assembly includes at least two dipole antennas mechanically, but not electrically, connected to each other. The at least two dipole antennas cross at an intersection point and form dipole antenna arms starting from the intersection point. The dipole antenna arms are arranged in a half-space.

Abstract: A dipole antenna assembly includes at least two dipole antennas mechanically, but not electrically, connected to each other. The at least two dipole antennas cross at an intersection point and form dipole antenna arms starting from the intersection point. The dipole antenna arms are arranged in a half-space.

Abstract: Disclosed are abrasive particles, a method for manufacturing the abrasive particles, and a method for manufacturing a Chemical Mechanical Polishing (CMP) slurry. The method for manufacturing abrasive particles for the CMP slurry includes preparing a raw material precursor, drying the raw material precursor, and calcining the dried raw material precursor using a calcination furnace where a gas atmosphere having relatively less oxygen in comparison with an air atmosphere is created.

Abstract: A magnetic resonance imaging system is provided, which can provide the homogeneous magnetic field to obtain a head anatomic image with a high resolution and high SNR by coaxially disposing a receive-only phased array antenna inside a transmit-only antenna with a predetermined gap, and thereby a detailed and accurate image of a man's head can be obtained.

Abstract: There is provided an RF (radio frequency) coil assembly of a magnetic resonance imaging (MRI) system, which comprises a birdcage transmit-only coil using inhomogeneous modes. Further, a multi-channel receive-only phased array coil is provided. In one embodiment, the multi-channel receive-only phased array coil may include a plurality of ring-shaped receive-only coils, wherein the receive-only coils are connected to each other in a pseudo-chain-link configuration to form a ring shape. The multi-channel receive-only phased array coil may be located inside said transmit-only coil and spaced a predetermined distance apart therefrom. In accordance with the embodiments, emphasis images of the peripheral part of a human brain with high resolution and high signal to noise ratio may be obtained.

Abstract: An RF (radio frequency) coil assembly of a magnetic resonance imaging (MRI) system, which has a spiral-shaped coil and a plurality of sections. In one embodiment, an RF coil of a magnetic resonance imaging (MRI) system has a plurality of ring-shaped end-rings arranged vertically and a plurality of rods. Each of the rods are connected to the plurality of end-rings. Adjacent end-rings of the plurality of end-rings forms respective coil sections and each of the coil sections has switching blocks located between adjacent rods of the plurality of rods. The switching blocks are operable to control the continuity status of the plurality of rods in the respective coil section.

Abstract: Disclosed are abrasive particles, a method for manufacturing the abrasive particles, and a method for manufacturing a Chemical Mechanical Polishing (CMP) slurry. The method for manufacturing abrasive particles for the CMP slurry includes preparing a raw material precursor, drying the raw material precursor, and calcining the dried raw material precursor using a calcination furnace where a gas atmosphere having relatively less oxygen in comparison with an air atmosphere is created.

Abstract: There is provided an RF (radio frequency) coil assembly of a magnetic resonance imaging (MRI) system, which comprises a birdcage transmit-only coil using inhomogeneous modes. Further, a multi-channel receive-only phased array coil is provided. In one embodiment, the multi-channel receive-only phased array coil may include a plurality of ring-shaped receive-only coils, wherein the receive-only coils are connected to each other in a pseudo-chain-link configuration to form a ring shape. The multi-channel receive-only phased array coil may be located inside said transmit-only coil and spaced a predetermined distance apart therefrom. In accordance with the embodiments, emphasis images of the peripheral part of a human brain with high resolution and high signal to noise ratio may be obtained.