Abstract: A device includes an input coupling grating having a first grating structure characterized by a first set of grating parameters. The input coupling grating is configured to receive light from a light source. The device also includes an expansion grating having a second grating structure characterized by a second set of grating parameters varying in at least two dimensions. The second grating structure is configured to receive light from the input coupling grating. The device further includes an output coupling grating having a third grating structure characterized by a third set of grating parameters. The output coupling grating is configured to receive light from the expansion grating and to output light to a viewer.

Abstract: We have developed a model system of HIV reservoirs in neural cells by generating chimeric phosphorothioate-modified oligodeoxynucleotides (sODN) that specifically interact with neural cell DNA or RNA, and that further comprise a sequence of the HIV genome. In particular, we have conjugated the chimera sODN to a delivery vehicle (e.g. a superparamagnetic iron oxide nanoparticle (SPIO)) and have demonstrated specific delivery to neural cells, in vitro and in vivo. These model systems can be used to screen for agents that specifically target latent viral infection. In particular, using the model system, we have developed suicide MRI contrast agents that can be used to reduce the number of neural cells which harbor the virus, also provided herein. Our model system is translatable to other latent viruses as well.

Abstract: The elevating lift with a stabilized movable base includes a base with extendable legs that provide minimum to maximum adjustable stability during use and transport. A lift system is mounted on the base, and a platform assembly is mounted on top of the lift system for selective raising or lowering. Each extendable leg supports a caster, rendering the base movable, and selective extension and retraction of the legs adjusts the stability of the lift. The plurality of legs can be further driven to simultaneously rotate about the vertical axis to steer the lift. The stabilized movable base is further alternatively used in combination with a stool, providing minimum to maximum stability during use and transport of seating, and multiple elevating lifts may be used to support linked platform assemblies in various configurations.

Abstract: The elevating lift with a stabilized movable base includes a base with extendable legs that provide minimum to maximum adjustable stability during use and transport. A lift system is mounted on the base, and a platform assembly is mounted on top of the lift system for selective raising or lowering. Each extendable leg supports a caster, rendering the base movable, and selective extension and retraction of the legs adjusts the stability of the lift. The plurality of legs can be further driven to simultaneously rotate about the vertical axis to steer the lift. The stabilized movable base is further alternatively used in combination with a stool, providing minimum to maximum stability during use and transport of seating, and multiple to elevating lifts may be used to support linked platform assemblies in various configurations.

Abstract: A power distribution unit including a base, at least one socket, and at least one detecting unit is provided. The socket is disposed at the base and has a power end and a ground end. The detecting unit is disposed at the base and comprises at least two switches in communication with an AND gate. Communication between a plug and the socket is detected utilizing the AND gate. A voltage signal is output responsive to the detected communication. More specifically, a first voltage signal is output responsive to detection of receipt of both the power end and the ground end by the socket and/or receipt of the ground end by the socket and absence of the power end. A second voltage signal is output responsive to receipt of the power end by the socket and absence of the ground end.

Abstract: An apparatus including a base, a socket, a first switch, a second switch, and an AND gate is provided. The socket is disposed at the base and the socket is configured to receive a plug. The socket has a power end in communication with the first switch and a ground end in communication with the second switch. When a plug is disposed at the socket, the AND gate outputs an alarm signal responsive to the first switch being short when the plug is electrically connected to the power end of the socket and the second switch being open when the plug is electrically disconnected from the ground end of the socket.

Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.

Abstract: A medical system is presented, where the system includes a medical profile directory configured to maintain a set of medical system profiles, a medial profile manager configured to update and maintain medical system profiles within the medical profile directory, and a server configured to interface with the medical profile manager to facilitate medical system profile maintenance. The server is configured to transmit information from at least one medical system profile to a surgical system, thereby enabling the surgical system to employ a current operational parameter within the medical system profile desired by a user.

Abstract: An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a first portion of the light propagating in the waveguide toward the eye, and to diffract a second portion of the light propagating in the waveguide away from the eye.

Abstract: The radially engaging coupling system comprises numerous embodiments for connecting two or more concentric components with radially extending or retracting bolts. Most embodiments include a ring having a plurality of Archimedean spiral slotted segments. Each bolt has a pin extending laterally therefrom to engage a corresponding slot in the ring. Rotation of the ring drives the pins and their bolts outward or inward to engage or disengage an outer component. Some embodiments have inwardly or outwardly spaced pin passages in the ring, rather than the spiral slots. The disc may comprise a snap ring. Another embodiment has two axially spaced spirally slotted rings, with a plurality of cylindrical rollers therebetween. Rotation of the rings drives the rollers inward or outward to engage corresponding axial grooves in the inner shaft. In another embodiment each bolt has an arcuate segment extending thereacross, to engage a corresponding circumferential groove in an outer component.

Abstract: The elevating lift with a stabilized movable base includes a base with extendable legs that provide minimum to maximum adjustable stability during use and transport. A lift system is mounted on the base, and a platform assembly is mounted on top of the lift system for selective raising or lowering. Each extendable leg supports a caster, rendering the base movable, and selective extension and retraction of the legs adjusts the stability of the lift. The plurality of legs can be further driven to simultaneously rotate about the vertical axis to steer the lift. The stabilized movable base is further alternatively used in combination with a stool, providing minimum to maximum stability during use and transport of seating, and multiple elevating lifts may be used to support linked platform assemblies in various configurations.

Abstract: A medical system is presented, where the system includes a medical profile directory configured to maintain a set of medical system profiles, a medical profile manager configured to update and maintain medical system profiles within the medical profile directory, and a server configured to interface with the medical profile manager to facilitate medical system profile maintenance. The server is configured to transmit information from at least one medical system profile to a surgical system, thereby enabling the surgical system to employ a current operational parameter within the medical system profile desired by a user.

Abstract: An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a first portion of the light propagating in the waveguide toward the eye, and to diffract a second portion of the light propagating in the waveguide away from the eye.

Abstract: A device includes an input coupling grating having a first grating structure characterized by a first set of grating parameters. The input coupling grating is configured to receive light from a light source. The device also includes an expansion grating having a second grating structure characterized by a second set of grating parameters varying in at least two dimensions. The second grating structure is configured to receive light from the input coupling grating. The device further includes an output coupling grating having a third grating structure characterized by a third set of grating parameters. The output coupling grating is configured to receive light from the expansion grating and to output light to a viewer.

Abstract: An eyepiece and waveguide for viewing a projected image in a virtual reality and augmented reality imaging and visualization system. The waveguide may include a substrate for guiding light. The waveguide may also include an incoupling diffractive element disposed within or on the substrate and configured to diffract an incoupled light related to the projected image into the substrate. The waveguide may further include a first grating disposed within or on the substrate and configured to manipulate the diffracted incoupled light from the incoupling diffractive element so as to multiply the projected image and to direct the multiplied projected image to a second grating. The second grating may be disposed within or on the substrate and may be configured to outcouple the manipulated diffracted incoupled light from the waveguide. The first grating and the second grating may occupy a same region of the waveguide.

Abstract: An apparatus including a base, a socket, a first switch, a second switch, and an AND gate is provided. The socket is disposed at the base and the socket is configured to receive a plug. The socket has a power end in communication with the first switch and a ground end in communication with the second switch. When a plug is disposed at the socket, the AND gate outputs an alarm signal responsive to the first switch being short when the plug is electrically connected to the power end of the socket and the second switch being open when the plug is electrically disconnected from the ground end of the socket.

Abstract: The simultaneous maneuvering system includes a base, a plurality of wheel assemblies including at least one wheel rotatably mounted to the base, a plurality of steering rotors rotatably mounted to the base and the wheel assemblies, and a drive assembly having a drive frame coupled to each of the rotors. Operation of the drive assembly causes simultaneous rotation of the rotors and, thereby, positions the wheel of each corresponding wheel assembly in a desired direction.

Abstract: A power distribution unit including a base, at least one socket, and at least one detecting unit is provided. The socket is disposed at the base and has a power end and a ground end. The detecting unit is disposed at the base and comprises at least two switches in communication with an AND gate. Communication between a plug and the socket is detected utilizing the AND gate. A voltage signal is output responsive to the detected communication. More specifically, a first voltage signal is output responsive to detection of receipt of both the power end and the ground end by the socket and/or receipt of the ground end by the socket and absence of the power end. A second voltage signal is output responsive to receipt of the power end by the socket and absence of the ground end.

Abstract: A power distribution unit including a base, at least one socket, at least one detecting unit and a management unit is provided. The socket is disposed at the base and has at least one power end and a ground end. The detecting unit is disposed at the base. When a plug is disposed at the socket, the detecting unit outputs an alarm signal if the plug is electrically connected to the power end of the socket but the plug is not electrically connected to the ground end of the socket. The management unit is electrically connected to the detecting unit and performs a predetermined operation in response to the alarm signal.

Abstract: The elevating lift includes a stabilizer base with extendable legs to provide minimum to maximum stability during use and transport. A lift system is fixed to the stabilizer base, and a platform assembly is mounted to the top of the base to be selectively raised or lowered by the lift system. The lift system utilizes a plurality of telescoping cage assemblies interconnected to extend or retract relative to each other. A drive assembly with an extendable lift mast is mounted to the stabilizer base to act on the cage assemblies to raise or lower the same. A drive train coupled to the telescoping cage assemblies enables relative extension and retraction of the cage assemblies. An adjustable guardrail is mounted to a platform of the platform assembly to provide safety for the user.