Circularly Polarized Antennas for Active Holographic Imaging through Barriers
Circular polarized antennas and balun structure are dielectrically loaded to optimally match the the dielectric barrier material but yet are still light-weight in design. The circular polarized antennas allow optimal imaging performance because they remove the barrier front surface reflections, optimally couple the electromagnetic energy into the barrier, and remove issues associated with polarized dependent objects embedded in the barrier structure.
RADIATION MONITORING DEVICES AND ASSOCIATED METHODS (iEdison No. 0685901-21-0111)
The TRI-tag is an internally powered, miniaturized radiation sensing, electronic Bluetooth Low Energy (BLE) beacon tag. It includes an integrated novel, low-power, inexpensive solid-state gamma radiation detector. The device was designed for operation in rugged environments with no maintenance for up to 3 years. The tag mechanical package is completely sealed using a sonic welding method and requires no external connectors or penetrations to the case. In one use case, it may be mounted to the Cs137 and AmBe241 source shields used in the oil and gas service industry as part of the Well Logging Mobile Source Transit Security (MSTS) V2 system designed to improve situational awareness of radioactive sources as sources move from the home base of operation to a job site and back. The TRI-tag wirelessly sends indication of device tamper or removal, gamma radiation activity count, and a globally unique identification that may be associated with the asset it is mounted to in a back-end database at the time of installation. It has an additional feature that uses Near Field Communications (NFC) wake-up to support ultra-low power consumption during the time between its manufacture up until it is installed and placed into service. Power management has been optimized to provide long-life from the internal primary batteries prior to deployment and in normal operation. The NFC technology can wake the unit from deep sleep requiring almost no battery power prior to installation. Integration of this tag with the MSTS V2 system will provide improved capability to automatically detect when a shield is added/removed to a transport (truck or overpack) and when a source is removed or added to the shield that the tag is mounted to. Because the tag can be mounted directly to a shield without cables, the radiation activity level detected is less dependent on orientation or movement of the shield within the transport as opposed to a detector mounted to the wall of the source storage compartment. This makes the tag's usage much more convenient operationally.
Ion Funnel Ion Trap and Process
An electrodynamic ion funnel trap has been developed and fully characterized with a time-of-flight mass spectrometer (TOF MS), an ion mobility spectrometer (IMS) and an IMS-TOF MS system. In electrospray ionization (ESI)- TOF MS experiments with low concentration peptide mixtures, ion accumulation in the funnel trap has been shown to increase signal-to-noise ratios (SNR) of analytes by a factor of 30 as compared to that observed in the conventional continuous regime. In IMS and IMS-TOF MS experiments, > 10-fold improvement in SNR has been observed. Removal of lower mass-to-charge ratio (m/z) ions prior to ion accumulation in the trap has been investigated and found to result in additional SNR improvements for the trapping mode with automated gain control (AGC).
METHOD OF GENERATING FEATURES OPTIMAL TO A DATASET AND CLASSIFIER
A method of generating features optimal to a particular dataset and classifier is disclosed. A dataset of messages is inputted and a classifier is selected. An algebra of features is encoded. Computable features that are capable of describing the dataset from the algebra of features are selected. Irredundant features that are optimal for the classifier and the dataset are selected.
SYSTEM AND PROCESS FOR PURIFICATION OF ASTATINE-211 FROM TARGET MATERIALS (iEdison No. 0685901-17-0014)
A new column-based purification system and approach are described for rapid separation and purification of the alpha-emitting therapeutic radioisotope .sup.211At from dissolved cyclotron targets that provide highly reproducible product results with excellent .sup.211At species distributions and high antibody labeling yields compared with prior art manual extraction results of the prior art that can be expected to enable enhanced production of purified .sup.211At isotope products suitable for therapeutic medical applications such as treatment of cancer in human patients.
DEVICES AND PROCESS FOR HIGH-PRESSURE MAGIC ANGLE SPINNING NUCLEAR MAGNETIC RESONANCE
A high pressure magic angle spinning (MAS) NMR capability, compromising of a high pressure MAS rotor, a high pressure loading/reaction device for in situ sealing and re-opening of the valve of the high pressure MAS rotor, and a MAS probe with localized RF coil for background signal suppression, is reported. Use ceramics as the sample rotor cylinder, and plastics glued in a “smart way” at the both ends of the cylinder for high pressure seal, pressure exceeding 100 bars is achieved with minimal penetration loss of pressure during a period of 72 hours. As an example of application, in situ 13C MAS NMR studies of the reaction products and intermediates associated with geological carbon sequestration using a model mineral, i.e., forsterite (Mg2SiO4) reacted with supper critical CO2 and H2O at 50C are carried out and preliminary results are reported.
Shared Aperture Antenna Array
A shared aperture antenna array including an array of antennas is disclosed. Elements of neighboring antennas are shared to create additional antennas. The shared elements include radiating patches and apertures. Each antenna shares an aperture with neighboring antennas. The array of antennas may be linear or two-dimensional. A phase shifting network with single-pole-single-throw reflective switches may be coupled to the antennas.
Ion Trap Device (NIH iEdison No. 0685901-12-0006)
This invention report on an ion storage device that work efficiently at high pressure (> 50 mtorr).This device store and release ion quickly into mass analyzers such as mass spectrometers. To store ions in this device they need to be confined radially as well as axially although radially does not imply circular geometry for the trap body. For example to confine ions radially the body of the trap can be made of stacked-ring electrodes where out-of-phase rf field is applied to adjacent ring-shaped electrodes (prior art, e.g. ion funnel trap). In this device ions, instead, are confined radially utilizing a segmented multipole where out-of-phase rf field is applied to adjacent rods and different dc voltage can be applied to different segments of the same rod. Adjacent segments which are aligned radially have out-of-phase rf field while adjacent segments which are aligned axially have the same rf-field. Segmenting the multipole allow for precise control of the ions velocity as they exit from trap especially at high pressures and for cases where a tightly focused packets of ions are required. In this device adjacent segments can be separated by air or dielectric material. The radius on which the multipole is aligned (inscribed radius) can be constant or changing through the trap. To block ions from exiting the trap during the storage (or accumulation) period ions are also confined axially. Axial confinement in this invention is done through two approaches. The first approach to confine ions axially is through rf confinement. Rf-confinement is done by applying out-of-phase rf field to adjacent set of wires thus creating what we refer to as rf-wall. The wire set can be also biased with a dc potential in addition to the rf-field. Ions are released from the trap by removing the rf-field from the set of wires thus allowing ions to pass through the wires. In the second approach ions are confined axially by creating a potential well through applying appropriate dc potentials to a set of ring electrodes which may be separated by constant distance or variable distances. The combination of the number of electrodes, different spacing between electrodes and the voltage applied to the electrodes create a potential well that confine ions axially.