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The R143 is a class of New Technology Train subway cars built by Kawasaki Rail Car Company for the New York City Subway's B Division.Delivered between 2001 and 2003, the cars displaced R40s and R42s that operated on the L service in conjunction with the BMT Canarsie Line's signal system being automated.
A total of 4,586 PCC cars were purchased by United States transit companies: 1,057 by Pullman Standard and 3,534 by St. Louis. Most transit companies purchased one type, but Chicago, Baltimore, Cleveland, and Shaker Heights ordered from both. The Baltimore Transit Co. (BTC) considered the Pullman cars of superior construction and easier to work on.
AN/AAR-47(V)1 Original version providing missile warning with IR detectors. AN/AAR-47(V)2 Adds laser warning sensors to the optical sensor modules and extends temperature operation range and operational life. [11] AN/AAR-47A(V)2 Adds UV detectors, increases detection sensitivity and extends temperature operation range and operational life. [10]
A root end surgery, also known as apicoectomy (apico-+ -ectomy), apicectomy (apic-+ -ectomy), retrograde root canal treatment (c.f. orthograde root canal treatment) or root-end filling, is an endodontic surgical procedure whereby a tooth's root tip is removed and a root end cavity is prepared and filled with a biocompatible material.
The primary exception to this situation is in the field of heavy rapid transit, such as subways and elevated lines, which make use of a localization of the British practice, or a combination of the AAR and British systems. Some freight railroads also still use route signalling.
ARC-Authentication-Results (abbreviated AAR) - A combination of an instance number (i) and the results of the SPF, DKIM, and DMARC validation ARC-Seal (abbreviated AS ) - A combination of an instance number (i), a DKIM-like signature of the previous ARC-Seal headers, and the validity of the prior ARC entries.
The Northeast Corridor (NEC) is an electrified railroad line in the Northeast megalopolis of the United States. Owned primarily by Amtrak, it runs from Boston in the north to Washington, D.C., in the south, with major stops in Providence, New Haven, Stamford, New York City, Newark, Trenton, Philadelphia, Wilmington, and Baltimore.
Each sign can be divided into three 10° sectors known as decans or decanates, though these have fallen into disuse. The first decanate is said to be most emphatically of its own nature and is ruled by the sign ruler. [43] The next decanate is sub-ruled by the planet ruling the next sign in the same triplicity.