Abstract: Magnetic resonance imaging (MRI) systems and compositions thereof are provided. The MRI systems may include a main magnet configured to generate a primary magnetic field, the primary magnet forming a bore. The MRI system may include a gradient coil arranged in the bore and configured to generate a gradient magnetic field that provides a magnetic field environment with the main magnetic field. The gradient coil may include a shielding gradient coil including two or more coil units. One of the two or more coil units may be wound along a first coil path. Another one of the two or more coil units may be wound along a second coil path. The MRI system may also include a shimming structure arranged between the gradient coil and the primary magnet and configured to homogenize the main magnetic field.

Abstract: The present disclosure relates to a shimming device. The shimming device may include at least one supporting component each of which is configured with a plurality of wire groove groups. Each of the plurality of wire groove groups may include a plurality of wire grooves. Each of the plurality of wire grooves may be in a closed shape. The closed shapes formed by the plurality of wire grooves may be nested. The shimming device may further include wires arranged in the wire grooves of the plurality of wire groove groups of the at least one supporting component.

Abstract: The present disclosure relates to a shimming device. The shimming device may include at least one supporting component each of which is configured with a plurality of wire groove groups. Each of the plurality of wire groove groups may include a plurality of wire grooves. Each of the plurality of wire grooves may be in a closed shape. The closed shapes formed by the plurality of wire grooves may be nested. The shimming device may further include wires arranged in the wire grooves of the plurality of wire groove groups of the at least one supporting component.

Abstract: The present disclosure relates to a shimming device. The shimming device may include at least one supporting component each of which is configured with a plurality of wire groove groups. Each of the plurality of wire groove groups may include a plurality of wire grooves. Each of the plurality of wire grooves may be in a closed shape. The closed shapes formed by the plurality of wire grooves may be nested. The shimming device may further include wires arranged in the wire grooves of the plurality of wire groove groups of the at least one supporting component.

Abstract: The disclosure provides a bladeless fan, which includes a fan body and at least three telescopic brackets. The fan body includes a base. A plurality of guide members each correspondingly arranged to one telescopic bracket are installed inside the base. The guide member is fixed to the base and provided with a through channel, a bottom of the base is defined with a through hole communicated with the through channel arranged along a height direction of the base, and an inner wall of the through channel is provided with a rubber layer. The telescopic bracket includes a support and a handgrip connected with the support, and the base is provided with a guide groove arranged along the height direction of the base, the handgrip is inserted into the guide groove, the support is installed in the through channel, contacted with the rubber layer.

Abstract: The present disclosure relates to a magnetic resonance imaging device and shimming methods on the magnetic resonance imaging device. The magnetic resonance imaging device includes a main magnet, gradient coils, a vacuum enclosure, and a shimming conduit. The vacuum enclosure is configured to house at least part of the shimming conduit. The vacuum enclosure and at least part of the shimming conduit defines a hermetically sealed space configured to house the gradient coils. The shimming conduit has at least one opening configured to allow for access to an interior of the shimming conduit. The interior of the shimming conduit is hermetically insulated from the hermetically sealed space.

Abstract: The present disclosure relates to a magnetic resonance imaging device and shimming methods on the magnetic resonance imaging device. The magnetic resonance imaging device includes a main magnet, gradient coils, a vacuum enclosure, and a shimming conduit. The vacuum enclosure is configured to house at least part of the shimming conduit. The vacuum enclosure and at least part of the shimming conduit defines a hermetically sealed space configured to house the gradient coils. The shimming conduit has at least one opening configured to allow for access to an interior of the shimming conduit. The interior of the shimming conduit is hermetically insulated from the hermetically sealed space.

Abstract: A method includes creating a bulk order. The bulk order includes a plurality of action sets. Each action set represents a set of changes to a plurality of assets, and the bulk order represents, for a plurality of accounts, a plurality of services and assets. The method also includes validating the bulk order. The validating includes verifying a validity of a user name, which includes a validity of an association between the user name and the account and a validity of an association between the user name and the service. The validating also includes verifying the action set obeys a constraint of the product. The method also includes submitting the bulk order for execution of the set of changes. The submitting includes preparing the action set, executing the set of changes and changing a status of the bulk orders header to indicate a completion of the bulk order.

Abstract: A method includes creating a bulk order. The bulk order includes a plurality of action sets. Each action set represents a set of changes to a plurality of assets, and the bulk order represents, for a plurality of accounts, a plurality of services and assets. The method also includes validating the bulk order. The validating includes verifying a validity of a user name, which includes a validity of an association between the user name and the account and a validity of an association between the user name and the service. The validating also includes verifying the action set obeys a constraint of the product. The method also includes submitting the bulk order for execution of the set of changes. The submitting includes preparing the action set, executing the set of changes and changing a status of the bulk orders header to indicate a completion of the bulk order.