Upper mass limit for quasar

Upper plate proxies for flat-slab subduction processes in southern Alaska

Upper-mantle structure beneath the Southern Scandes Mountains and the Northern Tornquist Zone revealed by P-wave traveltime tomography

Uppermost mantle structure and its relation with seismic activity in the central Tien Shan

Upregulation of erythropoietin receptor in UT-7/EPO cells inhibits simulated microgravity-induced cell apoptosis

Upscaling matrix diffusion coefficients for heterogeneous fractured rocks

Upscaling river biomass using dimensional analysis and hydrogeomorphic scaling

Upstream urbanization exacerbates urban heat island effects

Uptake and sequestration of atmospheric CO2 in the Labrador Sea deep convection region

Uptake Capacity of ZN2+ by Natural Vietnamese Basalt and Their Application for Wastewater Treatment

Uptake of alkaline earth metals in Alcyonarian spicules (Octocorallia)

Uptake of natural and anthropogenic carbon by the Labrador Sea

Upward Stability Transfer for Tame Abstract Elementary Classes

Upwelling off the west coast of Hainan Island in summer: Its detection and mechanisms

Uracil in carbonaceous meteorites

Uracil Synthesis via HCN Oligomerization

Uraninite recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon

Uranium geochemistry in groundwater from tertiary sediments

Uranium lead systematics of low-Ti basaltic meteorite Dhofar 287A: Affinity to Apollo 15 green glasses

Uranium relocations and derivation of quasi-isochrons for a turbidite/pelagic sequence in the Northeast Atlantic