Results 231 to 240 of about 5,177,233 (350)

Glacier Flow Dynamics

All around the world we are feeling the effects of climate change. One of the most climate sensitive areas on our planet is our cryosphere: our glaciers, ice sheets, and other frozen parts of our world.
Neal, Kaia
core  

Safety Evaluation of an Aqueous Root and Leaf Extract of Ashwagandha (Withania somnifera)

Phytotherapy Research, EarlyView.
Sensoril, an aqueous root and leaf extract of ashwagandha showed no evidence of mutagenicity in the in vitro Ames assay, was negative in the in vitro micronucleus, in vivo mammalian bone marrow chromosome aberration assays, and was well tolerated in the rat at up to 4000 mg/kg BW/day when administered orally for a period of 90 days. The data from these
Mukesh Summan, Candace L. Doepker, Gregory P. Brorby   +2 more
wiley   +1 more source

Observed positive feedback between surface ablation and crevasse formation drives glacier acceleration and potential surge. [PDF]

Nat Commun
Nanni U, Bouchayer C, Åkesson H, Lefeuvre PM, Mannerfelt ES, Köhler A, Gagliardini O, Kohler J, Schmidt LS, Hult J, Renard F, Schuler TV.   +11 more
europepmc   +1 more source

Towards improving Arctic mixed‐phase cloud representation in the ECMWF model using MOSAiC observations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Abstract The presence of Arctic clouds plays a crucial role in the evolution of the surface temperature of Arctic sea ice. However, large biases in cloud representation remain in state‐of‐the‐art weather and climate models. In this study, we use observational data from the one‐year Arctic ship campaign Multi‐disciplinary drifting Observatory for the ...
Luise Schulte, Richard Forbes, Linus Magnusson, Vera Schemann, Jonathan Day, Susanne Crewell   +5 more
wiley   +1 more source

In Situ Analytical Chemistry Laboratory for the Exobiology Extant Life Surveyor. [PDF]

ACS Meas Sci Au
Drevinskas T, Cable ML, Stenner C, Gardner AS, Paton M, Malaska MJ, Cruz S, Rieber R, Etheredge R, Robinson M, Ono M, Mora MF, Bagshaw EA, Prior-Jones MR, Ferreira Santos MS, Noell AC, Willis PA.   +16 more
europepmc   +1 more source

Cross‐Linking Mass Spectrometry of the Antimicrobial Peptides Magainin 2 and PGLa Reveals Heterodimerization in Micellar Medium

Rapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale In this study, we applied cross‐linking mass spectrometry (XL‐MS) to characterize the oligomeric states of a PGLa/magainin 2 mixture and gain insight into the heterodimerization previously suggested in the literature. Both peptides have shown a synergistic enhancement of activity when tested in antimicrobial assays; however, the ...
Emilie Hirschler, Elise Glattard, Nicolas Arnaud, Johana Chicher, Philippe Hammann, Emmanuelle Leize‐Wagner, Burkhard Bechinger, Noelle Potier   +7 more
wiley   +1 more source

Bipolar investigation of near-surface glacial ice reveals an active microbial ecosystem driven by photosynthesis and chemolithoautotrophy. [PDF]

ISME Commun
O'Connor BRW, Allen D, Quinn M, Kozey M, Léveillé RJ, Whyte LG.   +5 more
europepmc   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Sixty years of observations and future projections of nine declining North American glaciers. [PDF]

Sci Rep
Josberger EG, Shuchman RA, Watkins RH.
europepmc   +1 more source

Spatiotemporal Assessment of Groundwater Interactions With a Regulated River: A Case Study of the Nechako River, Canada

River Research and Applications, EarlyView.
ABSTRACT Regulated rivers represent complex hydrological systems where groundwater–surface water interactions are governed by natural conditions and human interventions. This study investigates the spatiotemporal dynamics of groundwater–surface water exchanges in the Nechako River, British Columbia (Canada), using numerical simulations.
Milad Fakhari, John Gray, Avery Dextrase, Andre St‐Hilaire, Richard Martel   +4 more
wiley   +1 more source