Results 51 to 60 of about 24,905 (303)

Extracting iceberg freeboard using shadow length in high-resolution optical images

Geo-spatial Information Science
Icebergs are big chunks of ice floating on the ocean surface, and melting of icebergs contributes for the major part of freshwater flux into ocean. Dynamic monitoring of the icebergs in Antarctica and accurate estimation of their volume are important for
Ziyi Suo, Yingcheng Lu, Jianqiang Liu, Jing Ding, Qing Wang, Ling Li, Weimin Ju, Manchun Li   +7 more
doaj   +1 more source

Network Localization of Fatigue in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Fatigue is among the most common symptoms and one of the main factors determining the quality of life in multiple sclerosis (MS). However, the neurobiological mechanisms underlying fatigue are not fully understood. Here we studied lesion locations and their connections in individuals with MS, aiming to identify brain networks ...
Olli Likitalo, Jaakko Kungshamn, Albert Bellmunt‐Gil, Silvia Tommasin, Abhineet Ojha, Matias Viitala, Juho Aaltonen, Jyrki Lötjönen, Juha Koikkalainen, Pauli Ylikotila, Patrizia Pantano, Merja Soilu‐Hänninen, Juho Joutsa   +12 more
wiley   +1 more source

Icebergs boost phytoplankton growth in the Southern Ocean [PDF]

, 2008
Icebergs which calve from the Antarctic ice shelves and drift in the Southern Ocean deliver fresh water, dust and minerogenic particles to the surface ocean along the iceberg's path.
Jill N. Schwarz, Michael P. Schodlok
core   +1 more source

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

Monitoring the Petermann Ice Island with TanDEM-X [PDF]

, 2012
This paper presents the processing of TanDEM-X acquisitions for the monitoring of the topography of the Petermann ice island. In this particular case the area under study is continuously moving and the acquisition geometry is changing, so the processing ...
Busche, Thomas, De Zan, Francesco, Eyssartier, Kevin, Garcia, Jose A., Krieger, Gerhard, Lopez-Dekker, Paco, Prats, Pau   +6 more
core   +1 more source

Unilateral Ankle‐Foot Exoneuromusculoskeleton with Balance‐Sensing Feedback for Self‐Help Telerehabilitation after Stroke

Advanced Robotics Research, EarlyView.
This study introduces a hybrid robot that integrates mechanical assistance by musculoskeletons (i.e., soft pneumatic muscle with rigid exoskeletal extensions), neuromuscular electrical stimulation, and vibrotactile feedback in a lightweight wearable mechatronic complex applicable to the paretic ankle–foot poststroke for gait restoration. The system can
Fuqiang Ye, Wei Rong, Waiming Li, Kwok‐Ting Wong, Man‐Kit Pang, Hon‐Wah Wai, Lilly Li, Zicong Hong, Song Guo, Zong‐Hao Ma, Yongping Zheng, Ming Zhang, Nicholas Chow, Jianing Zhang, Xiaoling Hu, Fei Chen, Waisang Poon   +16 more
wiley   +1 more source

Iceberg influence on snow distribution and slush formation on Antarctic landfast sea ice from airborne multi-sensor observations [PDF]

The Cryosphere
Landfast sea ice fringes much of the coast of Antarctica and plays an important role for coastal ice–ocean–atmosphere interaction and ice shelf stability, as well as for the sea ice associated ecosystem.
S. Franke, S. Franke, M. Neudert, V. Helm, A. Jutila, O. Hames, N. Neckel, S. Arndt, S. Arndt, C. Haas, C. Haas   +10 more
doaj   +1 more source

Significant contribution of small icebergs to the freshwater budget in Greenland fjords

Communications Earth & Environment, 2020
Small icebergs comprise a significant fraction of icebergs in Greenland fjords and have fallen below the detection and resolution limit of earlier satellite data, suggest analyses of high-resolution imagery with deep neural networks.
Soroush Rezvanbehbahani, Leigh A. Stearns, Ramtin Keramati, Siddharth Shankar, C. J. van der Veen   +4 more
doaj   +1 more source

Recruitment, growth and mortality of an Antarctic hexactinellid sponge, Anoxycalyx joubini. [PDF]

, 2012
Polar ecosystems are sensitive to climate forcing, and we often lack baselines to evaluate changes. Here we report a nearly 50-year study in which a sudden shift in the population dynamics of an ecologically important, structure-forming hexactinellid ...
Barber, Julie S, Barry, James, Conlan, Kathy, Dayton, Paul K, Fisher, Jennifer L, Hammerstrom, Kamille, Jarrell, Shannon C, Kim, Stacy, O'Connor, Kevin, Oliver, John S, Robilliard, Gordon, Thurber, Andrew R   +11 more
core   +2 more sources

Volcano‐Inspired Dual‐Carbon Network Aerogel for High‐Performance Solar Evaporation With Edge‐Directed Salt Crystallization and Recovery

Advanced Science, EarlyView.
A volcano‐inspired dual‐carbon aerogel featuring hierarchical conduits and an outer carbon‐fiber shell directs rapid water transport, confines heat, and enables directional salt migration. Radial temperature gradients in the conical structure trigger Marangoni‐driven edge‐localized salt crystallization while maintaining an unobstructed photothermal ...
Shuyue Feng, Yongpeng Wang, Mengzhu Liu, Xin Wang, Tao Jia, Haibo Zhang, Haoyue Wu, Yuan Xu, Linghui Kong   +8 more
wiley   +1 more source