Results 191 to 200 of about 6,943 (279)

The Ames impact structure, Oklahoma: New radioisotopic constraints and implications for North American impact chronology

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The Ames impact structure (Oklahoma) is thought to have formed during the Ordovician Meteor Event, based on conodont biostratigraphy of its crater fill. Here, U–Pb zircon dates from its impact‐melt portion, conducted using secondary ion mass spectrometry and laser ablation–inductively coupled plasma–mass spectrometry (n = 37 spots), yield a ...
Elizabeth J. Catlos   +9 more
wiley   +1 more source

Millennial-to-orbital-scale subsurface ocean warming and Polynya formation off Dronning Maud Land during the last glacial. [PDF]

open access: yesNat Commun
Pinho TML   +10 more
europepmc   +1 more source

Medial Compartment Knee Osteoarthritis Altered Tibiofemoral Joint Kinematics and Contact Pattern During Daily Weight‐Bearing Extension

open access: yesOrthopaedic Surgery, Volume 17, Issue 5, Page 1478-1485, May 2025.
Under the surveillance of dual fluoroscopic imaging system (DFIS), the MCKOA side tibia showed more flexed and varus rotations and more posterior, lateral, proximal translations than its native side during daily extension, consistent with the extra medial shifts of contact patterns on MCKOA side tibial plateau.
Zheng Jiang   +9 more
wiley   +1 more source

Concurrent Measurement of O2 Production and Isoprene Emission During Photosynthesis: Pros, Cons and Metabolic Implications of Responses to Light, CO2 and Temperature

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT Traditional leaf gas exchange experiments have focused on net CO2 exchange (Anet). Here, using California poplar (Populus trichocarpa), we coupled measurements of net oxygen production (NOP), isoprene emissions and δ18O in O2 to traditional CO2/H2O gas exchange with chlorophyll fluorescence, and measured light, CO2 and temperature response ...
Kolby Jeremiah Jardine   +8 more
wiley   +1 more source

Volcanic forcing of the Lomagundi-Jatuli carbon isotope excursion. [PDF]

open access: yesProc Natl Acad Sci U S A
Blichert-Toft J   +6 more
europepmc   +1 more source

Environmental drivers of gaseous carbon fluxes in drained and rewetted Minnesota peatlands, U. S. A.

open access: yesRestoration Ecology, EarlyView.
Abstract Introduction Rewetting shows promise for mitigating carbon loss from drained peatlands. However, knowledge gaps remain in rewetting impacts on gaseous carbon fluxes and factors affecting rewetting success, especially in Minnesota and the Upper Midwest, United States, despite abundant degraded peatlands presenting restoration opportunities ...
Mark Felice   +6 more
wiley   +1 more source

Sediment transport and depositional hydrodynamics on the eastern Korean continental margin revealed by surface sediment granulometry

open access: yesSedimentology, EarlyView.
ABSTRACT Terrigenous sediments are transported from coastal areas and shelves to deeper continental margins by multiple processes. Understanding these processes is critical for evaluating the ecological impacts of fine‐grained sediment deposition and predicting future changes in sediment dispersal under rapid climate change.
Gyu Tae Sim   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy