Now showing items 11-18 of 18
Ion irradiation effects in nonmetals: formation of nanocrystals and novel microstructures
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 2000-03)
Ion implantation is a versatile and powerful technique for producing nanocrystal precipitates embedded in the near-surface region of materials. Radiation effects that occur during the implantation process can lead to complex ...
Metamictization of zircon: Raman spectroscopic study
(IOP Publishing Ltd, 2000-02-28)
Raman spectroscopy of radiation-damaged natural zircon samples shows increased line broadening and shifts of phonon frequencies with increasing radiation dose. Stretching and bending frequencies of SiO4 tetrahedra soften ...
Annealing of -decay damage in zircon: a Raman spectroscopic study
(IOP Publishing Ltd, 2000-04-03)
Recrystallization and structural recovery in -decay damage in zircon samples have been studied using Raman spectroscopy. Fifteen zircon samples with different degrees of radiation damage have been thermally annealed between ...
Alpha-decay damage and recrystallization in zircon: evidence for an intermediate state from infrared spectroscopy
(IOP Publishing Ltd, 2000-06-19)
α-decay damage and recrystallization in natural zircon (with dose ranging from 0.06 to 23.3×1018 α-events g -1) were studied using polarized reflection infrared spectroscopy. The experimental results show that α-decay ...
Elevated atmospheric CO 2 , fine roots and the response of soil microorganisms: a review and hypothesis
(Cambridge University PressBlackwell Publishing Ltd, 2000-07)
Combined effects of atmospheric CO 2 and N availability on the belowground carbon and nitrogen dynamics of aspen mesocosms
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 2000-08)
It is uncertain whether elevated atmospheric CO 2 will increase C storage in terrestrial ecosystems without concomitant increases in plant access to N. Elevated CO 2 may alter microbial activities that regulate soil N ...
Fishes of the Mio-Pliocene Ringold Formation, Washington: Pliocene Capture of the Snake River by the Columbia River
(Museum of Paleontology, The University of Michigan, 2000)
New tomistomine crocodylian from the middle Eocene (Bartonian) of Wadi Hitan, Fayum Province, Egypt
(Museum of Paleontology, The University of Michigan, 2000)