Results 71 to 80 of about 3,194 (298)

An estimate of ice wedge volume for a High Arctic polar desert environment, Fosheim Peninsula, Ellesmere Island [PDF]

The Cryosphere, 2018
Quantifying ground-ice volume on a regional scale is necessary to assess the vulnerability of permafrost landscapes to thaw-induced disturbance like terrain subsidence and to quantify potential carbon release. Ice wedges (IWs) are a ubiquitous ground-ice
C. Bernard-Grand'Maison, W. Pollard
doaj   +1 more source

Genetic Identification Of Ground Ice By Petrographic Method

Geography, Environment, Sustainability, 2021
The advantages and limitations of the petrography method and the relevance of its use for the study of natural ice are reviewed in the present work. The petrographic method of ground ice study is often used for solving paleogeographic issues.
Yana V. Tikhonravova, Viktor V. Rogov, Elena A. Slagoda   +2 more
doaj   +1 more source

Heterozygous loss‐of‐function alleles associate the conserved 3′‐5′ exoribonuclease EXOSC10 with hypersensitivity to the anticancer drug 5‐fluorouracil

Molecular Oncology, EarlyView.
EXOSC10, an essential nuclear RNA exosome‐associated 3′‐5′ exoribonuclease, is inhibited by the anticancer drug 5‐fluorouracil (5‐FU), and EXOSC10 depletion increases 5‐FU sensitivity. The colon‐cancer variant EXOSC10S402T, located in a proteolysis motif, is stable and nuclear but nonfunctional in vivo.
Radhika Sain, Yann Le Page, Frédéric Percevault, Emmanuelle Becker, Luc Negroni, Almudena Fernandez, Marta Cantero, Diego Muñoz‐Santos, Lluís Montoliu, Cyrille Garnier, Michael Primig   +10 more
wiley   +1 more source

Nonlinear thermal and moisture response of ice-wedge polygons to permafrost disturbance increases heterogeneity of high Arctic wetland [PDF]

Biogeosciences, 2016
Low-center polygonal terrains with gentle sloping surfaces and lowlands in the high Arctic have a potential to retain water in the lower central portion of ice-wedge polygons and are considered high-latitude wetlands.
E. Godin, D. Fortier, E. Lévesque
doaj   +1 more source

Ice Particle Impacts on a Moving Wedge [PDF]

6th AIAA Atmospheric and Space Environments Conference, 2014
This work presents the results of an experimental study of ice particle impacts on a moving wedge. The experiment was conducted in the Adverse Environment Rotor Test Stand (AERTS) facility located at Penn State University. The wedge was placed at the tip of a rotating blade.
Mario M. Vargas, Peter M. Struk, Richard E. Kreeger, Jose Palacios, Kaushik Iyer, Robert E. Gold   +5 more
openaire   +1 more source

MITF maintains genome stability in nonmelanocyte lineages

Molecular Oncology, EarlyView.
MITF is essential for melanocyte survival and acts as an oncogene in 10%–20% of melanomas. We show that MITF depletion causes genome instability in nonmelanocytic cells, leading to LATS2‐mediated P53 activation, cell cycle arrest, and apoptosis. This study highlights the role of MITF as a genome maintenance factor beyond the melanocyte lineage. Created
Drifa H. Gudmundsdottir, Adrián López García de Lomana, Thejus B. Venkatesh, Kritika Kirty, Snaevar Sigurdsson, Linda Vidarsdottir, Ramile Dilshat, Erla Sveinbjornsdottir, Snaedis Ragnarsdottir, Daniel H Magnusson, Maria R. Bustos, Eirikur Steingrimsson, Thorkell Gudjonsson, Stefan Sigurdsson   +13 more
wiley   +1 more source

Effects of ice-wedge degradation and warming on Arctic tundra vegetation across a climatic gradient using a nitrogen-based model

Arctic, Antarctic, and Alpine Research
Ice-wedge polygons in Arctic tundra landscapes influence hydrology, nutrients, thermal regimes, and vegetation. Ice-wedges are particularly vulnerable to warming events, and widespread degradation has been observed in recent decades.
Kelcy Kent, Howard E. Epstein, Lindsay Grose, Mark Torre Jorgenson, Anna Liljedahl   +4 more
doaj   +1 more source

Deglaciation and future stability of the Coats Land ice margin, Antarctica [PDF]

The Cryosphere, 2018
The East Antarctic Ice Sheet discharges into the Weddell Sea via the Coats Land ice margin. We have used geophysical data to determine the changing ice-sheet configuration in this region through its last glacial advance and Holocene retreat and to ...
D. A. Hodgson, D. A. Hodgson, K. Hogan, J. M. Smith, J. A. Smith, C.-D. Hillenbrand, A. G. C. Graham, P. Fretwell, C. Allen, V. Peck, J.-E. Arndt, B. Dorschel, C. Hübscher, A. M. Smith, R. Larter   +14 more
doaj   +1 more source

Degradation of Arable Soils in Central Yakutia: Negative Consequences of Global Warming for Yedoma Landscapes

Frontiers in Earth Science, 2021
Global warming, which is especially intensive (up to 0.08°C yr−1) in permafrost area of Central Yakutia, has dramatic consequences for scarce arable land resources in this region.
Roman Desyatkin, Nikolai Filippov, Alexey Desyatkin, Dmitry Konyushkov, Sergey Goryachkin   +4 more
doaj   +1 more source

Fossil Ice Wedges in Hampshire [PDF]

Nature, 1966
THREE large fossil ice wedges have been discovered in a coastal section exposed at Highcliffe in Hampshire (M.R. 215931). They are to be found within the Plateau Gravel in the uppermost part of the cliff at about 100′ O.D. Here 2.4 m of gravels rest on Barton Beds, at this point consisting of an impermeable glauconitic clay. On top of the gravels is an
openaire   +1 more source