摘要:
A system and method for a magnetic resonance (MR) imaging system includes a coil form, at least one magnet positioned about the coil form and configured to generate a magnetic field, at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field, and a heat pipe thermally connected to the coil form and having a cryogen therein. The MR imaging system also includes a cryocooler connected to the heat pipe to cool the heat pipe and the cryogen, wherein the coil form is comprised of a thermally conductive material in which eddy currents are substantially reduced during operation of the at least one gradient coil. The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
摘要:
A method and system to register a user on an application system. The system includes an application system that receives a first request to retrieve user profile information to register the user on the application system. The application system, in turn, communicates a second request for the user profile information to the information provider. Finally, the application system receives the user profile information from the information provider to register the user on the application system.
摘要:
This invention relates to a single cone bit with offset axis and composite cones for oil and gas drilling, mining and other subterranean drilling operations. The bit consists of a head body and a cone. The cone section has a shape of composite cones. The outer circumference of the cone is composed of from back face of the cone to top of the cone an extended gage surface, an outer cone surface and a main cone surface. A plurality of cutting elements is mounted onto each cone surface. A head journal at lower end of the head body is for rotatablely connection with the cone. Between the axis of head journal and the axis of the bit, there is an offset value d along rotating direction of the cone. A gage pad is arranged on head body at a location opposite to the offset direction of the head journal. The gage pad is fitted with inserts or hardfaced with wear resistant alloy to prevent bit from whirling and prevent head body from being worn out and to ensure gage protection. Junk slots are machined along the side of head body and jet ports are arranged at lower bevel of the head body to guarantee cuttings removal and effective cleaning results. This invention improves the bit's ability to break rocks through impact for specific use in hard formations. The bit performance is obviously improved and overall drilling cost reduced.
摘要:
The invention discloses a glass sheet heating furnace. The furnace includes a stack, a control device and a glass sheet transfer device. The inside of the stack is divided into several heating zones. A heat accumulating type flame radiation tube is disposed in each heating zone. Diesel or natural gas or city gas or LPG is the fuel of the heat accumulating type flame radiation tube. The main fuel supplying pipes, the main wind supplying pipes and the main soot discharging pipes are disposed at the outside of the stack. A two-position four-way valve is installed in each of the heat accumulating type flame radiation tube. Two main burners of the each heat accumulating type flame radiation tube work alternately to on-off the valve. The control device controls the operation of the heat accumulating type flame radiation tube and the two-position four-way valve.
摘要:
A method and system to register a user on an application system. The system includes an application system that receives a first request to retrieve user profile information to register the user on the application system. The application system, in turn, communicates a second request for the user profile information to the information provider. Finally, the application system receives the user profile information from the information provider to register the user on the application system.
摘要:
This application relates to microporous, open-celled polymeric foam materials with physical characteristics that make them suitable for a variety of uses produced from high internal phase emulsions (HIPEs). This application particularly relates to oxidatively stable emulsifiers used to stabilize the HIPE and the foams produced from such HIPEs.
摘要:
This application relates to flexible, microporous, open-celled polymeric foam materials with physical characteristics that make them suitable for a variety of uses. This application particularly relates to monomer compositions having short curing times for preparing such foam materials from high internal phase emulsions.
摘要:
The present invention discloses a vacuum glass component, wherein the vacuum glass component is formed by compounding two or a plurality of glass plates, and the peripheries of the two or a plurality of glass plates are sealed with each other through sealing part in air-tight manner, a gap remains between the sealing part and the edge of the glass plate, vacuum-pumping is performed between adjacent glass plates at the inner side of the sealing part, and the sealing part is isolated from the outer environment between adjacent glass plates at the outer side of the sealing part by filling seal gum, resin or plastic. The vacuum glass component make the outer side of the sealing part isolated from the outer environment by using seal gum, resin or plastic, thereby preventing the metal at the sealing part from forming a heat bridge and facilitating the later installation and use of vacuum glass component. Moreover, the surface at the side edge of the vacuum glass component can be trimmed to be parallel and level by setting seal gum, resin or plastic, thereby keeping the beautiful appearance of the vacuum glass component.
摘要:
A persistent scheduling method and apparatus based on semi-grouping and statistically multiplexing, wherein a predetermined number of user equipments are grouped into a user equipment group to share allowable maximum transmission times of retransmission processes in different time slots each having a predetermined size, according to a predetermined set of criteria on communication conditions; and each user equipment within one user equipment group is allocated to use a corresponding time slot in a time division multiplexing mode.
摘要:
The present invention discloses a device for continuously processing vacuum glass member. The device comprises a loading table, front-end auxiliary vacuum chambers, a main vacuum chamber, a back-end auxiliary vacuum chambers and a unloading table sequentially along the advancing direction of the glass; the device also comprises a glass plate conveying mechanism and an electric control system; the glass plate conveying mechanism is used for conveying glass plates in the processing device; the vacuum chambers are independent from one another and are provided with a vacuum obtaining system and a vacuum detection device respectively, the vacuum degrees of the front-end auxiliary vacuum chambers and the back-end auxiliary vacuum chambers are equal to or lower than the vacuum degree of the main vacuum chamber, and the two auxiliary vacuum chambers provide a transition vacuum space at the front and rear ends of the main vacuum chamber respectively; a plate combining device and a sealing device are arranged in the main vacuum chamber, the two devices can perform plate combining and sealing operations on the glass plates in the main vacuum chamber; and the electric control system is used for performing the system control for a vacuum sealing process and an equipment operation flow.