Abstract: The marker rotation and retention device maintains multiple markers together, making it easier for a user to maintain the markers as a set. Optionally, the marker rotation and retention device includes angular rotation stops that are able to hold the angular position of specific marker with respect to its neighbors. This allows the user to easily withdraw and replace a specific marker by keeping the entrance to the cap exposed.

Abstract: A method of producing a four-layer silicon diode, including selecting a first silicon wafer, wherein said first silicon wafer is CZ-grown B-doped with <100> orientation, a resistivity of less than 0.01 Ohm-cm, and an oxygen content of greater than 10 ppma, and then selecting a second silicon wafer, wherein said second silicon wafer is CZ-grown P-doped with <100> orientation, a resistivity of less than 0.005 Ohm-cm, and an oxygen content of greater than 10 ppma, followed by cleaning the respective first and second silicon wafers. The wafers are then HF treated to yield respective first and second cleaned wafers, the first cleaned wafer is positioned into a first furnace and the second cleaned wafer is positioned into a second furnace, wherein the first and second furnaces are not unitary.

Abstract: A class of design topologies in the field of nonlinear networks (NLN) or nonlinear transmission lines (NLTL) that re-utilize direct current (DC) and low-frequency (LF) signal content reflected from a load or an output filter to yield increased pulse to radio frequency conversion efficiency and increased overall system efficiency. A nonlinear transmission line topology comprises a plurality of series inductive elements and a plurality of nonlinear capacitive elements. The inductive elements and the capacitive elements are arranged in a periodic structure forming a nonlinear network. An output coupling circuit connected across an output of the nonlinear network is configured to transmit high-frequency content to a load and to reflect back direct current and low-frequency content into the nonlinear network.

Abstract: A class of design topologies in the field of nonlinear networks (NLN) or nonlinear transmission lines (NLTL) that re-utilize direct current (DC) and low-frequency (LF) signal content reflected from a load or an output filter to yield increased pulse to radio frequency conversion efficiency and increased overall system efficiency. A nonlinear transmission line topology comprises a plurality of series inductive elements and a plurality of nonlinear capacitive elements. The inductive elements and the capacitive elements are arranged in a periodic structure forming a nonlinear network. An output coupling circuit connected across an output of the nonlinear network is configured to transmit high-frequency content to a load and to reflect back direct current and low-frequency content into the nonlinear network.

Abstract: The magnetic food storage is formed from a container and a lid, each with one or more embedded magnets. The magnets interact with each other to hold the containers to each other, hold lids to containers, and hold lids to lids. The magnets are preferably molded inside of the lid and inside the container, the magnets being surrounded by material. This avoids any contact between stored food and the magnets, thus preventing contamination.

Abstract: The synthesis, functionalization and characterization of borepin-based extended pi-electron molecules is disclosed. Bulky substituents shielded the vacant boron p-orbitals thus allowing synthetic manipulation and purification under ambient lab conditions. The presently disclosed borepin-containing compounds displayed reversible cathodic electrochemistry and can be viewed as n-type analogues to bent acene hydrocarbons.

Abstract: Systems and methods are provided that programmatically provide a user interface for forming a query, comprising. A query builder displays a first row of query criteria, a second row of query criteria, the second row being logically connected to the first row by a first Boolean connector, and a third row of query criteria, the third row being logically connected to the second row by a second Boolean connector. In response to a user drag-and-drop operation, the query builder nests the third row of query criteria in the second row of query criteria. Thus, a drag-and-drop operation obviates the need for cumbersome groups of parentheses when defining the order of operation of the query.

Abstract: A neutron detection system may include a volume of neutron moderating material, and a plurality of solid state neutron detection devices disposed within the volume of neutron moderating material, wherein some of the neutron detection devices suitable for transduction of primary reaction products resulting from a neutron interaction event, wherein some of the solid state neutron detection devices include two or more solid state neutron detection elements, and wherein the solid state neutron detection elements are configured for omnidirectional detection of impinging neutrons.

Abstract: An assembly of a ground anchor embedded within an artificial surface playing field is disclosed. The field has an artificial surface layer extending in a taut, level and smooth manner over an uppermost subsurface layer. A ground anchor body is embedded in the uppermost subsurface layer such that an upper wall of the ground anchor body engages an underside of the artificial surface layer. The upper wall of the ground anchor is fastened to the underside of the artificial surface layer with mechanical fasteners, an adhesive, or the like. An anchor member is connected to the ground anchor body and is extendable to a position in which the anchor member extends from the ground anchor body through a slit in the artificial surface layer to a position above the artificial surface layer so that it can be connected to an object to be anchored to the artificial surface layer.

Abstract: The invention relates to a method for isolation of target molecules from a nucleic acid population.

Abstract: A sports goal assembly having a goal frame defining an upright goalmouth on a shared soccer/football playing field is provided. The goal frame includes a spaced-apart, opposed pair of elongate base rails that each extend rearward of the goalmouth and along and parallel to an underlying surface of the playing field to support the goal assembly on the playing field. An elongate base crossbar interconnects the base rails and extends transversely therebetween. Each of the elongate base rails includes a front section adjacent the goalmouth, a rear section remote from the goalmouth, and an intermediate section. The base crossbar is connected to, and extends from, the intermediate sections of the base rails, and the rear sections of the base rails include counterbalancing weights to stabilize the goal assembly.

Abstract: Systems and methods are provided that programmatically provide a user interface for forming a query, comprising. A query builder displays a first row of query criteria, a second row of query criteria, the second row being logically connected to the first row by a first Boolean connector, and a third row of query criteria, the third row being logically connected to the second row by a second Boolean connector. In response to a user drag-and-drop operation, the query builder nests the third row of query criteria in the second row of query criteria. Thus, a drag-and-drop operation obviates the need for cumbersome groups of parentheses when defining the order of operation of the query.

Abstract: A training device for use as a playing field obstacle during athletic training exercises. The training device includes a weighted base supportable on an underlying ground surface. The base has at least one wheel enabling ready repositioning of the base on the playing field and an upper wall with an upward-opening slot. The base can also include a dummy obstacle having a body portion and a base plug portion. The base plug portion is receivable within the slot of the base for connecting the dummy obstacle to the base such that, when the dummy obstacle is connected to the base, the body portion of the dummy obstacle is supported in a substantially upright position. The base may further include one or more coaching sticks removably secured within receptacles in a position extending or projecting from the base.

Abstract: A training device for use as a playing field obstacle during athletic training exercises. The training device includes a weighted base having a bottom wall supportable in a stationary position on an underlying ground surface. The base has at least one wheel enabling ready repositioning of the base on the playing field and an upper wall with an upward-opening slot. The training device can also include a separate dummy obstacle having a body portion and a base plug portion. The base plug portion is receivable within the slot of the base for connecting the dummy obstacle to the base such that, when the dummy obstacle is connected to the base, the body portion of the dummy obstacle is supported in a substantially upright position. The training device can also include one or more coaching sticks separate from the base and dummy obstacle, and the base can include at least one receptacle for removably securing and supporting the coaching stick in a position extending or projecting from the base.

Abstract: A training aid for use during footwork, coordination, speed and/or agility training exercises is provided. The training aid is one or more obstacles about which a player weaves, jumps, or ducks and includes at least one coaching stick. The coaching stick is elongate, has opposite free ends, and has a transverse cross-section that is uniform along substantially a full length of the coaching stick. Preferably, the coaching stick is elliptical in transverse cross-section and defines an elliptical outer periphery that has a width greater then its depth. Accordingly, the coaching stick has a wide face as viewed in one direction and a narrow face as viewed in a different direction. Swivel clips for connecting coaching sticks together and methods of assembling a training circuit are also disclosed.

Abstract: A portable, self-erecting sports goal has a frame sufficiently flexible to be re-positioned between a goal configuration and a storage configuration without requiring disassembly of the frame. The frame includes first and second goal posts interconnected at upper ends thereof by a crossbar, a first base bar extending rearward from a lower end of a first goal post, a second base bar extending rearward from a lower end of a second goal post, and a base rail interconnecting the ends of the first and second base bars opposite the goal posts. In the goal configuration, the base bars and base rail support the sports goal on an underlying ground surface and the goal posts and crossbar cooperate to define a substantially rectangular goal mouth extending upright from the underlying ground surface. In the storage configuration, the frame is twisted and folded upon itself into a substantially flat and compact position enabling the sports goal to be readily carried and stored.

Abstract: An anchoring device for a sports goal, such as a soccer goal, is provided as a portable bag having a pair of laterally spaced-apart weight-carrying compartments interconnected by at least one central strip of material. The central strip defines at least one opening extending between the weight-carrying compartments, and the portable bag is of a size capable of straddling a base rail of a sports goal frame such that the weight-carrying compartments are located on opposite sides of the base rail while the strip extends over the base rail. When the portable bag straddles the base rail, the opening permits a goal net to be fastened to the base rail of the goal frame between the weight-carrying compartments.

Abstract: An assembly including a tubular connector and at least one framing member having a hollow open end and a longitudinally-extending recessed channel. The recessed channel is formed by at least a pair of opposed inwardly-directed walls having inner peripheral surfaces that taper toward one another in a substantially V-shaped configuration. The connector is slidably received within the hollow end of the framing member and has a longitudinally-extending inset track for cooperatively receiving and engaging the tapered inner peripheral surfaces of the channel walls of the framing member. The inset track has outer peripheral surfaces formed by outwardly tapered walls, whereby when the inset track and recessed channel are urged together by a fastener, a slip-resistant joint is formed therebetween. Sports goal assemblies and methods of assembly are also disclosed.

Abstract: An anchoring device for a sports goal, such as a soccer goal, is provided as a portable bag having a pair of laterally spaced-apart weight-carrying compartments interconnected by at least one central strip of material. The central strip defines at least one opening extending between the weight-carrying compartments, and the portable bag is of a size capable of straddling a base rail of a sports goal frame such that the weight-carrying compartments are located on opposite sides of the base rail while the strip extends over the base rail. When the portable bag straddles the base rail, the opening permits a goal net to be fastened to the base rail of the goal frame between the weight-carrying compartments.

Abstract: A vandal resistant sports goal net clip, or fastener, for attaching nets to the frames of sports goals. The fasteners are difficult to remove by hand and require the use of a separate tool to attach and remove the net from the frame. Sports goal assemblies and methods of securing nets to goal frames are also disclosed.