Results 31 to 40 of about 268,174 (306)

Conditioning bounds for traveltime tomography in layered media [PDF]

, 2011
This paper revisits the problem of recovering a smooth, isotropic, layered wave speed profile from surface traveltime information. While it is classic knowledge that the diving (refracted) rays classically determine the wave speed in a weakly well-posed ...
Abramowitz M, Aki K, Bal G, Bateman H, Collar A R, DeVore R, Grenander U, H Baek, Herglotz G, Knutson A, L Demanet, Leung S, Shearer P, Shohat J, Simon B, Stefanov P, Stork C, Whitham G B, Wiechert E   +18 more
core   +3 more sources

3D‐Printable, Honeycomb‐Inspired Tissue‐Like Bioelectrodes for Patient‐Specific Neural Interface

Advanced Materials, EarlyView.
3D printed MRI‐compatible tissue‐like neural electrodes tailored to individual gyral patterns. This honeycomb‐inspired printable gel electrode (HiPGE) employs a bioinspired architecture with soft hydrogels, engineered to match the softness of brain tissue.
Marzia Momin, Luyi Feng, Xiaoai Chen, Salahuddin Ahmed, Basma AlMahmood, Li‐Pang Huang, Jiashu Ren, Xinyi Wang, Hyunjin Lee, Samuel R. Cramer, Nanyin Zhang, Sulin Zhang, Tao Zhou   +12 more
wiley   +1 more source

Trust and Occupational Safety Behavior Related to Decompressive Diseases on Bajo Ethnic Divers

Diversity, 2023
The total area of Indonesian waters exceeds the land area, so the sea becomes one of the land community's livelihoods. Majority of the Bajo ethnic community work as traditional diver fisherman.
Fatmawaty Mallapiang, Syarfani Syarfani, Syahratul Aeni   +2 more
doaj   +1 more source

Wanted Dead or Alive? The Relative Value of Reef Sharks as a Fishery and an Ecotourism Asset in Palau [PDF]

, 2011
Over the last 20 years, ecotourism to view and interact with marine megafauna has become increasingly popular (Higham and Lück 2008). Examples of this type of tourism include turtle and whale watching, snorkelling with seals and shark diving (Jacobson ...
D. Pannell, G. M. S. Vianna, J. J. Meeuwig, M. G. Meekan, S. Marsh   +4 more
core  

A Self‐Healing Magnetoelectric Sensor with Pain Sensing for Underwater Soft Electronics

Advanced Materials, EarlyView.
This study introduces a self‐healing magnetoelectric sensory system designed for amphibious soft electronics. By utilizing liquid‐metal conductors and self‐healing elastomers, the system enables autonomous recovery from mechanical damage. Its multilayered architecture features dual self‐powered proximity and tactile sensing alongside pain sensing in ...
Xuan Zhang, Jinrun Zhou, Pengyu Chen, Xuchen Wang, Eddy Yi Ler Pang, Bin Su, Yu Jun Tan   +6 more
wiley   +1 more source

Contribution of Adenosine in the Physiological Changes and Injuries Secondary to Exposure to Extreme Oxygen Pressure in Healthy Subjects

Biomedicines, 2022
Climbers and aviators are exposed to severe hypoxia at high altitudes, whereas divers are exposed to hyperoxia at depth. The aim of this study was to report changes in the adenosinergic system induced by exposure to extreme oxygen partial pressures.
Alain Boussuges, Jeremy Bourenne, Farid Eloufir, Julien Fromonot, Giovanna Mottola, Jean Jacques Risso, Nicolas Vallee, Fabienne Bregeon, Régis Guieu   +8 more
doaj   +1 more source

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

Advanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

Oxygen Toxicity and Special Operations Forces Diving: Hidden and Dangerous

Frontiers in Psychology, 2017
In Special Operations Forces (SOF) closed-circuit rebreathers with 100% oxygen are commonly utilized for covert diving operations. Exposure to high partial pressures of oxygen (PO2) could cause damage to the central nervous system (CNS) and pulmonary ...
Thijs T. Wingelaar, Thijs T. Wingelaar, Pieter-Jan A. M. van Ooij, Rob A. van Hulst   +3 more
doaj   +1 more source

Recreational scuba diving: negative or positive effects of oxidative and cardiovascular stress? [PDF]

, 2014
Environmental conditions and increased physical activity during scuba diving are followed by increased production of free radicals and disturbed redox balance.
Dumić, Jerka, Perović, Antonija, Unić, Adriana   +2 more
core   +3 more sources

Strong‐Magnetic Flexible Composites for Magnetically Responsive Soft Robots

Advanced Robotics Research, EarlyView.
This perspective provides an overview of the performance mechanisms, preparation methods, and applications of strong magnetic flexible composite materials in soft actuators (such as gripping, movement, and sensing), and further explores current opportunities and challenges.
Wenwen Li, Shuai Liu, Xinyi Wang, Xinglong Gong, Shouhu Xuan   +4 more
wiley   +1 more source