Results 51 to 60 of about 55,669 (179)
Long‐Term Deformation in the Alpine‐Provence Foreland Constrained by In Situ Calcite U‐Pb Dating
Tectonics, Volume 45, Issue 6, June 2026.Abstract The evolution of the Alpine‐Provence foreland is characterized by multiple deformation phases since the Mesozoic, representing successive compressional and extensional episodes. The precise timing and spatial evolution of these deformation phases remain poorly constrained due to the lack of absolute geochronological data. Here, we present U–Pb
Dorian Bienveignant +12 more
wiley +1 more source
Chemostratigraphy of Neoproterozoic carbonates: implications for 'blind dating' [PDF]
, 2001 The delta C-13(carb) and Sr-87/Sr-86 secular variations in Neoproteozoic seawater have been used for the purpose of 'isotope stratigraphy' but there are a number of problems that can preclude its routine use.
Gorokhov, I.M. +8 more
core +1 more source
, 2023 Mesoporous bioglass nanoparticles doped with strontium ions are prepared with a sol–gel method. The nanoparticles can significantly improve cell proliferation, migration, and tube formation in vitro, as well as skin wound healing in a mouse ...
Joselito Razal (13077138) +7 more
core
Nucleation of strontium-substituted apatite
, 2009 Strontium plays an important role in the treatment of osteoporosis, but the detailed chemistry is still in doubt. In particular, the effect of strontium on the stability of natural bone is not well understood.
Pan, HB +8 more
core +1 more source
Hair radioactivity as a measure of exposure to radioisotopes [PDF]
, 1972 Since many radioisotopes accumulate in hair, this tropism was investigated by comparing the radioactivity of shaved with plucked hair collected from rats at various time intervals up to 24 hrs after intravenous injection of the ecologically important ...
Strain, W. H. +3 more
core
Strontium- and lead-isotope composition of some basalts at DSDP Hole 69-504B
, 1983 Seventeen whole-rock samples, generally taken at 25- to 50-meter intervals from 5 to 560 meters sub-basement in Deep Sea Drilling Project Hole 504B, were analyzed for 87Sr/86Sr ratios, and rubidium and strontium concentrations.
T J Barrett (6962990), Barrett, T J
core +1 more source
Sorption of Strontium on Unconsolidated Glaciofluvial Deposits and Clay Minerals; Mutual Interference of Cesium, Strontium and Barium [PDF]
, 1994 In earlier studies we investigated the sorption behaviour of cesium and barium on size fractions of glaciofluvial materials and on the clay minerals montmorillonite, illite and chlorite.
von Gunten, H. R. +3 more
core +2 more sources
, 1965 The radioisotopes iodine —131 and tritium were used to determine aquifer porosities and permeabilities in a series of pumped bore tests. If reasonable values for porosity can be assumed, the methods can also be used to estimate the thickness of an ...
Ellis, WR +3 more
core
A normalised seawater strontium isotope curve: possible implications for Neoproterozoic-Cambrian weathering rates and the further oxygenation of the Earth [PDF]
, 2007 The strontium isotope composition of seawater is strongly influenced on geological time scales by changes in the rates of continental weathering relative to ocean crust alteration.
Shields, GA, Shields, G. A.
core
Discrimination of Calcium and Strontium by the Kidney
, 1956 Skeletal retention and excretion of strontium were directly compared with those of calcium, by injecting solutions containing both radioisotopes, Ca45 and Sr90, into rats and rabbits.
P. Noyes, P. C. Lorick, N. S. MacDonald
core +1 more source