Abstract: A surgical tool support system is provided. The system includes a support portion, a swivel arm, and a tool holder for holding a surgical tool coupled to a distal end of the swivel arm. The tool holder can have a locking joint controlled by an actuator such that the tool holder can be locked into a position along multiple axes of rotation. The system can offset the force required by a user to move the surgical tool, thereby reducing fatigue.

Abstract: Aspects of the disclosure are directed toward systems and methods for performing deionization of a fluid. A capacitive deionization (CapDI) module including a fluid inlet and a fluid outlet can be placed in a fluid flow system. The CapDI module can include a plurality of CapDI cells arranged in series with one another. A power MOSFET polarity circuit can receive power from a switching regular and provide bidirectional electrical power to the CapDI module for performing deionization and module regeneration processes. A controller can control the providing the electrical power from the switching regulator to the power MOSFET polarity circuit based on a signal received from a conductivity sensor positioned in the fluid flow path.

Abstract: A three-dimensional phantom for providing displacement profiles for a CT table having 6 degrees of freedom includes a body having at a top face, a side face and an end face; the top face and the side face sharing a common edge; the top face and the end face sharing a common edge; and the side face and the end face sharing a common edge; wherein an angle formed by the top face and the end face is less than 90 degrees; the side face including a first isocenter mark and a first offset mark, wherein the first offset mark has an angle corresponding to the angle formed by the top face and the end face; and an isocenter marker at the isocenter of the body.

Abstract: A three-dimensional phantom for providing displacement profiles for a CT table having 6 degrees of freedom includes a body having at a top face, a side face and an end face; the top face and the side face sharing a common edge; the top face and the end face sharing a common edge; and the side face and the end face sharing a common edge; wherein an angle formed by the top face and the end face is less than 90 degrees; the side face including a first isocenter mark and a first offset mark, wherein the first offset mark has an angle corresponding to the angle formed by the top face and the end face; and an isocenter marker at the isocenter of the body.

Abstract: Aspects of the disclosure are directed toward systems and methods for performing deionization of a fluid. A capacitive deionization (CapDI) module including a fluid inlet and a fluid outlet can be placed in a fluid flow system. The CapDI module can include a plurality of CapDI cells arranged in series with one another. A power MOSFET polarity circuit can receive power from a switching regular and provide bidirectional electrical power to the CapDI module for performing deionization and module regeneration processes. A controller can control the providing the electrical power from the switching regulator to the power MOSFET polarity circuit based on a signal received from a conductivity sensor positioned in the fluid flow path.

Abstract: A method and system are provided whereby a request for proposals for professional services may be posted on a computer network, e.g., the internet, and professional service providers respond with proposals for their respective services. A user enters a proposal for professional services on a web-site of the computer network. The proposal is received by a first service provider at the site, who responds with a first proposal. The proposal is also received by at least one additional service provider at the site, who responds with a second proposal. The user receives the first and second proposals, and any additional proposals, at the site. The user then evaluates the proposals and selects one of the proposals.