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.
It is this âiron manâ spirit that still motivates Chinaâs petroleum workers to this day, according to the Daqing Drilling & Exploration Group of the Daqing Petroleum Administrative Bureau. The group is owned by China National Petroleum Corp (CNPC), the countryâs largest oil and gas company.