Converting a Gene to an RNA ï§ Transcription â¢ Enzymes use the nucleotide sequence of a gene to synthesize a complementary strand of RNA ï§ DNA is transcribed to RNA â¢ Most RNA is single strandedâ¢ RNA uses uracil in place of thymineâ¢ RNA uses ribose in place of deoxyribose. DNA and RNA.
In 1999 Repsol bought 97.81% of the Argentine oil and gas company YPF S.A., which at the time was the largest oil-and-gas company in Latin America. The acquisition better positioned Repsol as a multinational company. Repsolâs acquisition of YPF also increased its capital to 288 million shares worldwide.
more HVAC definitions. HSPF is an abbreviation for Heating Seasonal Performance Factor. It is the most commonly used measure of the heating efficiency of heat pumps.(The cooling efficiency of a heat pump is measured by its SEER .). Technically speaking, the HSPF is a heat pump's estimated seasonal heating output in BTUs divided by the amount of energy that it consumes in watt-hours. heat pump with a high HSPF is more efficient than a heat pump with a low HSPF. New heat pumps manufactured after 2005 are required to have an HSPF of at least 7.7. The most efficient heat pumps have an HSPF of 10.