Results 291 to 300 of about 2,102,666 (322)
Some of the next articles are maybe not open access.
Unsupported radiogenic Pb in zircon: a cause of anomalously high Pb-Pb, U-Pb and Th-Pb ages
Contributions to Mineralogy and Petrology, 1984Ion microprobe U-Th-Pb isotopic analyses of zircons from a granodioritic orthogneiss from the Napier Complex, Mount Sones, Enderby Land, Antarctica, have identified an unambiguous example of unsupported radiogenic Pb in a 3,950 Ma-old crystal. At one 40 μm spot on the crystal an unusually large heterogeneity in Pb content was found, the concentration ...
Williams, L. S. +4 more
openaire +1 more source
ACM SIGMETRICS Performance Evaluation Review, 2007
Blind scheduling policies schedule tasks without knowledge of the tasks' remaining processing times. Existing blind policies, such as FCFS, PS, and LAS, have proven useful in network and operating system applications, but each policy has a separate, vastly differing description, leading to separate and distinct implementations.
Hanhua Feng +2 more
openaire +2 more sources
Blind scheduling policies schedule tasks without knowledge of the tasks' remaining processing times. Existing blind policies, such as FCFS, PS, and LAS, have proven useful in network and operating system applications, but each policy has a separate, vastly differing description, leading to separate and distinct implementations.
Hanhua Feng +2 more
openaire +2 more sources
The Pb–Pb and O–Pb Nuclear Spin Coupling in Ba(Pb,Bi)O3 Oxides
Journal of Superconductivity and Novel Magnetism, 2006We report the 17O, 207Pb NMR and 17O–207Pb SEDOR study of superconducting BaPb1-x Bi x O3 (x 0.35) oxides. Inhomogeneous The results points to the formation of microscopically inhomogeneous distribution of the carrier density in metallic phase.
A. Pogudin +5 more
openaire +1 more source
U–Pb, Pb–Pb and Re–Os sulphide geochronology
2016The U–Pb decay scheme is the most widely applied geologically robust geochronometer. Due to its unique attribute of containing two independent decay chains, starting from different parent isotopes and finishing with different daughter isotopes of the same elements, it is possible to cross-correlate the data obtained simultaneously to produce routine ...
openaire +1 more source
A novel lead(II) framework containing Pb–O–Pb and Pb–Cl–Pb helical chains
Inorganic Chemistry Communications, 2008Abstract Under hydrothermal conditions, using 5-methyl-pyrazine-2-carboxylic acid (HL) and lead(II) chloride, a new 2D lead(II) framework [Pb(L)(μ2-Cl)(H2O)]n can be isolated, in which infinite Pb–O–Pb helical chains can be observed. Interestingly 1 stacks in ABAB… ways, in one layer right-handed Pb–O–Pb and left-handed Pb–Cl–Pb helical chains are ...
Bin Ding +4 more
openaire +1 more source
KS0andΛProduction in Pb-Pb Collisions atsNN<…
2013The ALICE measurement of K(S)(0) and Λ production at midrapidity in Pb-Pb collisions at √(s(NN))=2.76 TeV is presented. The transverse momentum (p(T)) spectra are shown for several collision centrality intervals and in the p(T) range from 0.4 GeV/c (0.6 GeV/c for Λ) to 12 GeV/c.
Betty Abelev +99 more
openaire +1 more source
2019
?????????????????????? ?????????????????????????? ?????????????????????? ?????????????????? ?? ???????????????????? ?????????????? Fe???O???/SiO???, Fe???O???/TiO??? ?? Fe???O???/Al???O??? ???????????????????????? ???????????????? Pb????? ?? ???????????? ?????????? ????????????????. ?????????????? ?????????????? ???????????????????????? ?? ?????????????
openaire +1 more source
?????????????????????? ?????????????????????????? ?????????????????????? ?????????????????? ?? ???????????????????? ?????????????? Fe???O???/SiO???, Fe???O???/TiO??? ?? Fe???O???/Al???O??? ???????????????????????? ???????????????? Pb????? ?? ???????????? ?????????? ????????????????. ?????????????? ?????????????? ???????????????????????? ?? ?????????????
openaire +1 more source