Results 51 to 60 of about 294,753 (307)

Navigability of the Northern Sea Route for Arc7 ice-class vessels during winter and spring sea-ice conditions

Advances in Climate Change Research, 2022
Sea ice hinders the navigability of the Arctic, especially in winter and spring. However, three Arc7 ice-class Liquefied Natural Gas carrying vessels safely transited the Northern Sea Route (NSR) without icebreaker assistance in January 2021.
Shi-Yi CHEN, Stefan Kern, Xin-Qing LI, Feng-Ming HUI, Yu-Fang YE, Xiao Cheng   +5 more
doaj   +1 more source

The Identification of Ice Floes and Calculation of Sea Ice Concentration Based on a Deep Learning Method

Remote Sensing, 2023
When navigating ships in cold regions, sea ice concentration plays a crucial role in determining a ship’s navigability. However, automatically extracting the sea ice concentration and floe size distribution remains challenging, due to the difficulty in ...
Li Zhou, Jinyan Cai, Shifeng Ding
doaj   +1 more source

Investigation of North Pacific sea ice anomalies in the context of atmospheric and oceanic variability [PDF]

, 2001
Thesis (M.S.) University of Alaska Fairbanks, 2001This study investigates the main mode of variability in North Pacific sea ice and examines the relationship between sea ice concentration and northern hemispheric climate variability for the period 1968 ...
Tivy, Adrienne
core  

Will Arctic sea ice thickness initialization improve seasonal forecast skill? [PDF]

, 2014
Arctic sea ice thickness is thought to be an important predictor of Arctic sea ice extent. However, coupled seasonal forecast systems do not generally use sea ice thickness observations in their initialization and are therefore missing a potentially ...
Bitz, Blanchard-Wrigglesworth, Blanchard-Wrigglesworth, Blanchard-Wrigglesworth, Chevallier, Chevallier, Collins, Day, Doblas-Reyes, Dunstone, E. Hawkins, Eicken, Guemas, Guemas, Holland, J. J. Day, Johns, Jung, Kaleschke, Koenigk, Koenigk, Latif, Laxon, Lindsay, Massonnet, Mathiot, McLaren, Persson, Pohlmann, S. Tietsche, Schröder, Serreze, Shaffrey, Sigmond, Stephenson, Stroeve, Tietsche, Tietsche, Wang, Yang   +39 more
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Satellite Observation of Sea Ice Concentration Based on Chinese HY-1C/D Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The increasingly significant global warming has severely affected the Arctic region. The melting speed of sea ice is accelerating, and its spatial coverage is gradually shrinking, causing a series of ecological problems that cannot be ignored. Therefore,
Li Xu, Yiming Chen, Deyong Sun, Shengqiang Wang, Lijian Shi, Muhammad Bilal, Yongjun Jia, Shuyan Lang, Bin Zou   +8 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Classifying the Ice Seasons 1982-2016 Using the Weighted Ice Days Number as a New Winter Severity Characteristic [PDF]

, 2017
Sea ice is a key climate factor and it restricts considerably the winter navigation in severe seasons on the Baltic Sea. So determining ice conditions severity and describing ice cover behavior at severe seasons are necessary.
Alari, V. (Victor), Pärn, O. (Ove), Rjazin, J. (Jevgeni)   +2 more
core   +2 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Improving short-term sea ice concentration forecasts using deep learning [PDF]

The Cryosphere
Reliable short-term sea ice forecasts are needed to support maritime operations in polar regions. While sea ice forecasts produced by physically based models still have limited accuracy, statistical post-processing techniques can be applied to reduce ...
C. Palerme, T. Lavergne, J. Rusin, A. Melsom, J. Brajard, A. F. Kvanum, A. F. Kvanum, A. Macdonald Sørensen, L. Bertino, M. Müller, M. Müller   +10 more
doaj   +1 more source