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.
China National Petroleum Corporation (CNPC) is China's largest natural gas producer. It reported production of just more than 11 billion cubic feet of natural gas per day in 2014, representing an increase of nearly 10% on the previous year.