ION TRAPS THAT APPLY AN INVERSE MATHIEU Q SCAN

    公开(公告)号:US20190057856A1

    公开(公告)日:2019-02-21

    申请号:US15769998

    申请日:2016-10-21

    IPC分类号: H01J49/42 H01J49/00

    摘要: The invention generally relates to ion traps and methods of use thereof. In certain embodiments, the invention provides a system that includes a mass spectrometer including an ion trap, and a central processing unit (CPU). The CPU has storage that is coupled to the CPU for storing instructions that when executed by the CPU cause the system to apply a constant radio frequency (RF) signal to the ion trap, and apply a first alternating current (AC) signal to the ion trap the frequency of which varies as a function of time.

    Hybrid spatial and circuit optimization for targeted performance of MRI coils

    公开(公告)号:US12111378B2

    公开(公告)日:2024-10-08

    申请号:US18217976

    申请日:2023-07-03

    摘要: A method of operating a multi-coil magnetic resonance imaging system is disclosed which includes a controller performing a simulation using a predefined tissue model, determining output values of a variable of interest (VOI) associated with operation of two or more coils of an MRI system based on the simulation, comparing the simulated output values of the VOI to an a priori target values of the VOI, if the simulated output values of the VOI are outside of a predetermined envelope about the a priori target values of the VOI, then performing an optimization, wherein the optimization includes iteratively adjusting the circuit values until the simulated output values of the VOI are within the predetermined envelope about the a priori target values of the VOI thereby establishing VOI optimized values, and loading the established VOI optimized values and operating the magnetic resonance imaging system on the tissue to be imaged.

    ENERGY EFFICIENT AND ADAPTIVE SPACE COOLING AND HEATING SYSTEM

    公开(公告)号:US20240328675A1

    公开(公告)日:2024-10-03

    申请号:US18743052

    申请日:2024-06-13

    发明人: Tian Li

    IPC分类号: F24S50/80 F24S50/40 F24S60/00

    CPC分类号: F24S50/80 F24S50/40 F24S60/00

    摘要: A system and methods for heating and cooling are provided. The system may include an energy collector and an adaptive panel connected to the energy collector. The adaptive panel may a radiative cooling layer configured to dissipate heat from the energy collector. The radiative cooling layer may further include a thermo-responsive polymer configured to adjust transparency depending on temperature. The system may include a solar heating layer configured to absorb solar irradiation that passes through the radiative cooling layer and transfer heat to the energy collector.