Atrial tachycardia is a supraventricular tachycardia (SVT) that does not require the atrioventricular (AV) junction, accessory pathways, or ventricular tissue for its initiation and maintenance.
Page Content. Northern Natural Gas Company (Northern) is a subsidiary of Berkshire Hathaway Energy based in Omaha, Nebraska and has been in business since 1930. Northern owns and operates the largest interstate natural gas pipeline system in the United States.
TransCanada also owns, or has interests in, approximately 11,800 megawatts of power generation. TransCanada is the largest shareholder in, and owns the general partner of, TC PipeLines, LP.The company was founded in 1951 in Calgary. In January 2014, 46% of the ownership of TransCanada was by institutional shareholders.ransCanada is the largest shareholder in, and owns the general partner of, TC PipeLines, LP.