isotopically pure造句

• Subsequent separation procedures reduced the amount of isotopically pure einsteinium roughly tenfold.
• Such CO 2 can be converted to methane and from there to isotopically pure synthetic diamonds.
• Isotopically pure 13 C diamond layers 20 micrometers thick are used as stress sensors due to the advantageous Raman spectroscopy properties of 13 C.
• However, a pure gold ingot would be both chemically and isotopically pure, since ordinary gold consists only of one isotope, 197 Au.
• The phosphorus donors are isotopically pure 31 P, which have a nuclear addressed individually, by bringing specific donors into resonance with the applied oscillating magnetic field.
• For example, isotopically pure 12 C graphene has higher thermal conductivity than either a 50 : 50 isotope ratio or the naturally occurring 99 : 1 ratio.
• Hi, suppose we heated an element, isotopically pure uranium 235 say, up until it was 1 million degrees and observed an x percent decrease in halflife.
• However it is not isotopically pure since ordinary copper consists of two stable isotopes, 69 % 63 Cu and 31 % 65 Cu, with different numbers of neutrons.
• Finally, the required fuel is isotopically pure hydrogen and the influx of impurities into the plasma must be controlled to prevent neutron-producing side reactions such as these:
• :What about water that has been nuclearly enriched to be isotopically pure 1 H 2 16 O ? talk ) 08 : 56, 11 July 2012 ( UTC)
• According to the US Environmental Protection Agency ( EPA ), isotopically pure potassium-40 will give a committed dose equivalent of 5.02 nanosieverts over 50 years per becquerel ingested by an average adult.
• Even at room temperature, the thermal conductivity is quite high ( 6600 W / ( m稫 ) ), exceeding the reported room-temperature thermal conductivity of isotopically pure diamond by almost a factor of 2.
• The value of " k ( T ) " at the peak ( 37, 000 W / ( m稫 ) ) is comparable to the highest thermal conductivity ever measured ( 41, 000 W / ( m稫 ) for an isotopically pure diamond sample at 104 K ).
• Different isotopes of thorium behave identically chemically, but have slightly differing physical properties : for example, the densities of isotopically pure 228 Th, 229 Th, 230 Th, and 232 Th in g / cm 3 are respectively expected to be 11.5, 11.6, 11.6, and 11.7.
• The 12 C isotopically pure, ( or in practice 15-fold enrichment of isotopic number, 12 over 13 for carbon ) diamond gives a 50 % higher thermal conductivity than the already high value of 900-2000 K ) for a normal diamond, which contains the natural isotopic mixture of 98.9 % 12 C and 1.1 % 13 C . This is useful for heat sinks for the semiconductor industry.