Results 31 to 40 of about 1,896,507 (301)

Use of Ice Covers for Transportation

Canadian Geotechnical Journal, 1971
Observations are reported on the failure and use of freshwater ice covers for vehicular traffic. The study showed that good quality ice covers can support loads of up to P = 250 h2, where P is the total load in pounds and h is the thickness of the ice in inches. Failures were reported, however, for loadings as low as P = 50 h2. Factors contributing to
openaire   +3 more sources

YEAR-TO-YEAR DYNAMICS OF THE ICE COVER ANOMALIES IN THE TATAR STRAIT FOR THE PERIOD FROM 1882 TO 2018

Известия ТИНРО, 2019
Interannual variations of the ice cover in the Tatar Strait are analyzed for the period from 1882 to 2018 and compared with the ice cover dynamics in the Okhotsk Sea. Synchronicity of the ice cover long-term oscillations in these regions is noted for the
V. M. Pishchalnik, D. V. Dorofeeva, I. G. Minervin, I. V. Shumilov, I. V. Nikulina   +4 more
doaj   +1 more source

A New Thermal Categorization of Ice‐Covered Lakes

Geophysical Research Letters, 2021
AbstractLakes are traditionally classified based on their thermal regime and trophic status. While this classification adequately captures many lakes, it is not sufficient to understand seasonally ice‐covered lakes, the most common lake type on Earth.
Yang, Bernard, Wells, Mathew G., McMeans, Bailey C., Dugan, Hilary A., Rusak, James A., Weyhenmeyer, Gesa A., Brentrup, Jennifer A., Hrycik, Allison R., Laas, Alo, Pilla, Rachel M., Austin, Jay A., Blanchfield, Paul J., Carey, Cayelan C., Guzzo, Matthew M., Lottig, Noah R., MacKay, Murray D., Middel, Trevor A., Pierson, Don C., Wang, Junbo, Young, Joelle D.   +19 more
openaire   +4 more sources

Brief communication: Improving lake ice modeling in ORCHIDEE-FLake model using MODIS albedo data [PDF]

The Cryosphere
The FLake lake model embedded in the ORCHIDEE land surface model was recently updated to better represent winter ice cover. MODIS albedo data and the Great Lakes ice cover fraction dataset over the Laurentian Great Lakes were used to calibrate and ...
Z. Titus, Z. Titus, A. Cuynet, E. Salmon, C. Ottlé   +4 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

The Changing Arctic Sea Ice Cover [PDF]

Oceanography, 2011
Arctic sea ice cover has declined over the past few decades. The end of summer September ice extent reached a record minimum in 2007. While there has been a modest recovery since then, the past four years (2007–2010) show the lowest sea ice extent in the
Donald K. Perovich
doaj  

Modeling present and future ice covers in two Antarctic lakes

Journal of Glaciology, 2020
Antarctic lakes with perennial ice covers provide the opportunity to investigate in-lake processes without direct atmospheric interaction, and to study their ice-cover sensitivity to climate conditions.
Sebastián Echeverría, Mark B. Hausner, Nicolás Bambach, Sebastián Vicuña, Francisco Suárez   +4 more
doaj   +1 more source

Finding novel vulnerabilities of hypomorphic BRCA1 alleles

Molecular Oncology, EarlyView.
Synthetic lethality screens performed to identify novel vulnerabilities often model complete gene loss, thereby overlooking patient‐derived hypomorphic mutations. In this study, we have performed genome‐wide CRISPR screens on BRCA1 hypomorphic mutations, showing BRCA1I26A behaves like wild‐type, while BRCA1R1699Q mimics deficiency. Furthermore, we have
Anne Schreuder, Klaas de Lint, Hồ Mỹ Phúc Võ, Mariana M. Góis, Rosalie A. Kampen, Marta San Martin Alonso, Ilse Nootenboom, Veronica Garzero, Tiemen J. Wendel, Rob M. F. Wolthuis, Sylvie M. Noordermeer   +10 more
wiley   +1 more source

Changes in ice regime of Jagodne Lake (north-eastern Poland)

Acta Scientiarum Polonorum. Formatio Circumiectus, 2019
Aim of the study Indication of directions and pace of changes in ice regime of Jagodne Lake in 1975–2015. An analysis of predictability of ice phenomena in relation to stability and seasonality and an understanding mutual interactions between parameters
Mariusz Ptak, Mariusz Sojka, Bogumił Nowak   +2 more
doaj   +1 more source

A Bayesian Logistic Regression for Probabilistic Forecasts of the Minimum September Arctic Sea Ice Cover

Earth and Space Science, 2020
This study introduces a Bayesian logistic regression framework that is capable of providing skillful probabilistic forecasts of Arctic sea ice cover, along with quantifying the attendant uncertainties.
Sean Horvath, Julienne Stroeve, Balaji Rajagopalan, William Kleiber   +3 more
doaj   +1 more source