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Alcon offices in Johns Creek, Georgia. Alcon Inc. ( German: Alcon AG) is a Swiss-American pharmaceutical and medical device company specializing in eye care products. It has a paper headquarters in Geneva, Switzerland but its operational headquarters are in Fort Worth, Texas, United States, where it employs about 4,500 people. [2]
The US Food and Drug Administration (FDA) defines soft contact lenses as: made of soft, flexible plastics that allow oxygen to pass through to the cornea. Soft contact lenses may be easier to adjust to and are more comfortable than rigid gas permeable lenses. Newer soft lens materials include silicone-hydrogels to provide more oxygen to your ...
The utility frequency, (power) line frequency ( American English) or mains frequency ( British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia ...
Location of Texas. Texas is a state in the South Central region of the United States. The region's second-quarter 2018 gross state product was 8.6% of the GDP of the country at $1.755 trillion, with significant growth in mining, quarrying, and oil and gas extraction. [1]
The Texas Interconnection is an alternating current (AC) power grid – a wide area synchronous grid – that covers most of the state of Texas. The grid is managed by the Electric Reliability Council of Texas (ERCOT) . The Texas Interconnection is one of the three minor grids in the North American power transmission grid.
Automatic terminal information service, or ATIS, is a continuous broadcast of recorded aeronautical information in busier terminal areas. ATIS broadcasts contain essential information, such as current weather information, active runways, available approaches, and any other information required by the pilots, such as important NOTAMs.
Frequency allocation. Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [ 1] Because radio propagation does not stop at national boundaries, governments have sought to ...
6G. Mobile telecommunications. v. t. e. In telecommunications, 6G is the designation for a future technical standard of a sixth-generation technology for wireless communications . It is the planned successor to 5G (ITU-T IMT-2020 ), and is currently in the early stages of the standardization process, tracked by the ITU-T as IMT-2030 [ 1] with ...