摘要:
A device for measuring the absolute value of the refractive index of a liquid by immersion uses the optical properties of a cylindrical waveguide with a solid core and normal angle of incidence of the light source. The device consists of a transparent tube forming the enclosure of the waveguide, impervious to the surrounding liquid and partially filled with a transparent solid or liquid material of appropriate index of refraction, a fiber optic means of inputting light via a LED or laser and fiber optic means of coupling emerging light to a photodetector. The emerging light intensity is a function of the index of refraction of the surrounding liquid.
摘要:
A videoconference device provides an interface for initiating and controlling a videoconference and incorporating and annotating content in the videoconference without a personal computer. The content may reside on a portable storage medium such as a Universal Serial Bus (USB) or other flash memory device inserted in the interface device or on the device itself. The interface device may be a dedicated device for controlling the videoconferencing system, navigating to desired content, and interacting with the shared content. The device may also be a portable device such as a tablet device or mobile phone that interfaces with a videoconference system via an installed application.
摘要:
Electronics packages are provided with structure that provides a significantly-reduced package footprint and also facilitates substantial reduction of package fabrication time and cost. The footprint reduction is realized with a frame that defines an aperture wall which surrounds first sets of components on the first side of a printed circuit board and also extends away from the printed circuit board to provide package input/output access along the perimeter of the package footprint. The second side of the printed circuit board receives a second set of components and this set is protected by a board fill. The frame and printed circuit board are configured for realization from frame and board panels whose planar forms substantially reduce package fabrication time and cost because they facilitate the use of modern high-speed printed circuit board (PCB) fabrication processes.
摘要:
Systems for removing a tire from a rim are shown and described. In one embodiment, the system comprises a substantially flat base. A centerpiece is configured to attach to the base. A primary lever having a tire-interface portion at one end, a handle at the opposite end, and a centerpiece-attachment in between the tire-interface the said handle is also a component of the system. The primary lever is configured to attach to the centerpiece in a manner that allows the primary lever to rotate relative to the centerpiece.
摘要:
Providing high availability cache coherency in a distributed cache environment for a storage cluster. An extent owner node in a cluster controls extent disk requests and the locking and demotion of extent data. An extent client node may access the data but does not control destaging or locking. The extent client waits for a lock state grant prior to completing any I/O request. An extent client is allowed to receive data from a host for a write request and later let the extent owner sort out the proper cache coherency order. An extent client is not required to request a lock state change from the extent owner when a read cache hit occurs in the extent client. When a read miss occurs in an extent client, the extent client can initiate a stage request from disk and request the owner for a lock state change at a later time.
摘要:
Bowling lane conditioning oil in an aerosol container which has a propellant for dispensing the oil through a spray nozzle in an aerosol form. The oil includes a mixture of mineral oil, a leveling agent, and an antistatic agent. The mineral oil is a combination of paraffin and petroleum based mineral oils, and in some embodiments, the mixture also includes isopropyl alcohol, a fluorescent whitening agent, and a lubricity agent.
摘要:
A method and device for the detection of vapors of cocaine and associated compounds are disclosed. The method involves sampling a volume of air suspected of containing cocaine vapors, passing this air through a filtration system that removes any particulate matter and binds vapors of cocaine and associated compounds, if present, for further analysis. A preferred associated compound-vapor is that of ecgonidine methyl ester (EDME), and a marker for the presence of cocaine. The device is comprised of a sampling, filtration and vacuum port components and can be easily attached to a container, and suction source, for the sampling of air.