U-Th-Pb systematics of individual perovskite grains from the Allende and Murchison carbonaceous chondrites

U-Th-Pb systematics of morphologically characterized zircon and allanite: a high-resolution isotopic study of the Alpine Rensen pluton (northern Italy)

U-Th-Pb systematics of selected samples from Apollo 17, Boulder 1, Station 2

U-Th-Pb systematics of the eucrite 'Juvinas' - Precise age determination and evidence for exotic lead

U.S. draws blueprints for first lunar base

U.S. Lab condensate vent experiment and analysis

U.S. Participation in the Mars Express Mission

U.S. space surveillance

U.S. Stream Flow Measurement and Data Dissemination Improve

U/Pb zircon ages constrain the architecture of the ultrahigh-pressure Qinling-Dabie Orogen, China

U/Th-dating living and young fossil corals from the central tropical Pacific

UARS measurements and their Relationship to the understanding of Dynamics in the Mesosphere and Thermosphere

UARS Microwave Limb Sounder observations of denitrification and ozone loss in the 2000 Arctic late winter

UARS MLS O3 soundings compared with lidar measurements using the conservative coordinates reconstruction technique

Über accessorische elemente in mitteleuropäischen Eklogiten und ihren Mineralien

Über den möglichen Einfluss der Turbulenz in der oberen Troposphäre auf die Intensität von tellurischen Linien der atmosphärischen Gase

Über den Ursprung von Omega Centauri. Kugelsternhaufen oder ultrakompakte Zwerggalaxie?

UBIc photometry of ACO2390 early-type galaxies (Fritz+, 2005)

Ubiquitous Computing: Potentials and Challenges

Ubiquitous Indoor Localization and Worldwide Automatic Construction of Floor Plans