摘要:
A connector including a plug, and outlet and a connecting block each of which provides enhanced performance by reducing crosstalk. The plug includes contacts having a reduced amount of adjacent area between neighboring contacts and a load bar that staggers the wires to be terminated to the contacts. An outlet which mates with the plug includes contacts positioned in a contact carrier so that adjacent area between neighboring contacts is reduced. A connecting block includes pairs of contacts wherein the distance between contacts in a pair is smaller than the distance between sets of pairs. The connecting block also includes an improved tip that reduces untwisting of wire coupled to the connecting block.
摘要:
A connector including a plug, and outlet and a connecting block each of which provides enhanced performance by reducing crosstalk. The plug includes contacts having a reduced amount of adjacent area between neighboring contacts and a load bar that staggers the wires to be terminated to the contacts. An outlet which mates with the plug includes contacts positioned in a contact carrier so that adjacent area between neighboring contacts is reduced. A connecting block includes pairs of contacts wherein the distance between contacts in a pair is smaller than the distance between sets of pairs. The connecting block also includes an improved tip that reduces untwisting of wire coupled to the connecting block.
摘要:
Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and/or by additional irrigation.
摘要:
Apparatus and methods for monitoring a tooth may include sensing acoustic energy propagating from regions (such as a root canal system) in and/or near a tooth. The apparatus and methods may be used with root canal cleaning treatments to determine the efficacy of the treatment and/or to reduce risk of post-treatment complications. An acoustic source (e.g., an acoustic transducer and/or a high-speed liquid jet) may be used to transmit energy into a tooth and/or regions near a tooth. An acoustic receiver may be used to detect acoustic signatures of acoustic events (e.g., acoustic echoes and/or acoustic cavitation) occurring in the tooth. The acoustic signatures may be used, for example, to determine the progress of a root canal cleaning treatment and/or the presence or movement of material toward a periapical region of the tooth. Apparatus and methods for monitoring a tooth may include detecting impact of a first jet on a tooth and actuating a second jet in response to detection of the impact.
摘要:
A method for predicting athletic performance for a subject, the method comprising: obtaining first heart rate data for varying speed, constant incline running; obtaining second heart rate data for varying incline, constant speed running; determining a first power per change in speed at the constant incline; determining a second power per change in incline at the constant speed incline; predicting athletic performance in response to the first power and the second power.
摘要:
An engine air supply system includes an air source, which is a gas turbine engine in one example. A component, such as an environmental control system component, is interconnected to the air source by a conduit that includes a supply flow direction. A check valve is arranged in the conduit. The check valve includes a valve portion moveable in the supply flow direction from a closed position to an open position. The closed position is arranged at an acute angle relative to the supply flow direction. The check valve includes first and second valve portions that are hemi-elliptical in shape. The first and second valve portions are non-planar and arranged approximately 90 degrees apart when in the closed position. The first and second valve portions move toward one another from the closed position to the open position. Each of the first and second valve portions moves approximately 30-40 degrees from the open position to the closed position in response to a stall condition, which significantly reduces the response time and forces generated by the first and second valve portions when closing.
摘要:
Methods and systems for controlling the operation of a tool are provided. These methods and systems may be used to control the operation of any tool, for example, a drill or a saw. The methods and systems employ at least one sensor to detect at least one operational parameter of the tool, for example, drill speed or acceleration. Instrumentation is used to process the data representing the parameter to determine characteristic values of the parameter, for example, amplitudes and frequencies. These characteristic values are used to control the operation of the tool, to determine one or more properties of the material being acted on by the tool, or to monitor the condition of the tool. Though aspects of the invention may be applied to a broad range of tools and machining processes, in one aspect, the methods and systems are used to monitor and control the operation of a surgical drilling process, for example, for the drilling of bone.
摘要:
The present invention relates to a system for three-dimensional (3-D) acoustic imaging of a scattering structure using information from a two-dimensional (2-D) image. The system uses a characterized sensor array to emit a signal from the sensor array into an object of interest to generate at least one 2-D representation of the object of interest. The 2-D representation comprises a plurality of x and y coordinate pairs and at least one candidate scattering structure. The candidate scattering structure comprises a shape defined by at least one pair of x and y coordinates. The candidate scattering structure shape is restricted to at least one pair of x and y coordinates. The pair of x and y coordinates of the candidate scattering structure shape are then compared with a first coordinate-dependent response function to assign an x, y, and z position of a scattering structure in 3-D space.
摘要:
A skateboard-like personal vehicle comprises a platform, a pair of steerable front wheels controlled by an upright steering lever movable left or right about a longitudinal pivot axis by one hand of the rider, a pair of rear wheels, one of which is driven by a reciprocable foot pedal, and an upright post which can be gripped by the rider's other hand.
摘要:
Apparatus and methods for root canal treatments are provided. In some embodiments, an aiming element may be used to position a high-velocity liquid jet near a desired location in the tooth. Embodiments of the aiming element may include an interrupter that deflects or impedes the liquid jet when it is not desirable for the jet to propagate from the aiming element. Embodiments of the aiming element may include an elongated member that permits passage of the liquid jet through a channel. The elongated member may include one or more openings, for example, on sides and/or ends of the member. Some root canal cleaning techniques include one or more applications of the liquid jet followed by application of a disinfectant such as, for example, an aqueous solution of sodium hypochlorite.