Results 51 to 60 of about 99,552 (308)

Observations of High Frequency, Long Range Acoustic Propagation in a Harbor Environment [PDF]

, 2008
The positioning and navigation of AUV\u27s in harbor environments using underwater acoustics is complicated by shallow waters, long propagation distances, and complex oceanographic features.
Mayer, Larry A., Weber, Thomas C., Weirathmueller, Michelle   +2 more
core   +1 more source

Oceanographic and underwater acoustics research conducted during the period 1 May 1961-31 October 1961 [PDF]

, 1962
Research during this six month period was performed during cruises of the CHAIN to the Romanche Trench, to the Puerto Rico Trench, and to the Mediterranean Sea, and during a cruise of the BEAR to the Gulf of Maine.
Woods Hole Oceanographic Institution, /
core   +1 more source

Underwater observations on sea snake behaviour

Records of the Australian Museum, 1978
SUMMARY Sea snakes forage on the bottom but often bring prey to the surface to swallow. Surface activity not exclusively associated with feeding or breathing, sometimes occurs, especially at night. The skin is usually shed entire; it is loosened by rubbing against coral, curling and knotting or expanding the body.
Heatwole, Harold F, Minton, Sherman A., Taylor, Ron, Taylor, Valerie   +3 more
openaire   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

Juveniles of the piscivorous dourado Salminus brasiliensis mimic the piraputanga Brycon hilarii as an alternative predation tactic

Neotropical Ichthyology, 2011
In the district of Bom Jardim, in Nobres, Mato Grosso State, Brazil, there are clear water streams originating on karstic terrain. The dourado, Salminus brasiliensis, is an apex stalking predator in these streams. In clear waters, where visually oriented
Eduardo Bessa, Lucélia Nobre Carvalho, José Sabino, Paola Tomazzelli   +3 more
doaj  

Underwater performance of thin-film photovoltaic module immersed in shallow and deep waters along with possible applications

Results in Physics, 2019
This article presents the experimental results of the underwater performance of amorphous silicon (a-Si) thin-film photovoltaic (TFPV) module. Electrical performance characteristics (current, voltage, power input, power output, and power conversion ...
A. Ajitha, Nallapaneni Manoj Kumar, X.X. Jiang, Guduru Ramakrishna Reddy, Arunkumar Jayakumar, Kadapalla Praveen, T. Anil Kumar   +6 more
doaj   +1 more source

Underwater observations of fish behavior in traps [PDF]

Helgoländer Wissenschaftliche Meeresuntersuchungen, 1973
1. Saturation diving from the undersea laboratories Tektite II, Hydro-Lab and Edalhab permitted scientists to conduct extended in situ observations of fish within the influence of traps. The 14, 5 and 4 day studies were conducted in the U.S. Virgin Islands, Bahama Islands and Florida during April, 1970, December, 1971, and January, 1972. 2.
W. L. High, I. E. Ellis
openaire   +1 more source

A Surface‐engineered Microfluidic Device for Antibody‐Mediated Negative Selection of High‐Quality Sperm for Assisted Reproduction

Advanced Functional Materials, EarlyView.
This study reports a microfluidic device with a functionalized surface utilizing a polyoxazoline coating and covalently immobilized gold nanoparticles and anti‐phosphatidylserine antibody. The device efficiently eliminates pre‐apoptotic and apoptotic spermatozoa and yields sperm with substantially improved quality and low DNA damage, offering a simple ...
Soraya Rasi Ghaemi, David J. Sharkey, Nicole O. McPherson, Markos Negash Alemie, Krasimir Vasilev, Sarah A. Robertson   +5 more
wiley   +1 more source

Enhanced GNSS-acoustic positioning method implementing with constraints on underwater sound speed structure

Earth, Planets and Space
It is important to appropriately model underwater sound speed structures to detect seafloor displacements accurately using GNSS-acoustic seafloor geodetic observations.
Fumiaki Tomita
doaj   +1 more source

Multi-Sensor Collaborative Positioning in Range-Only Single-Beacon Systems: A Differential Chan–Gauss–Newton Algorithm with Sequential Data Fusion

Sensors
The development of underwater high-precision navigation technology is of great significance for the application of autonomous underwater vehicles (AUVs).
Yun Ye, Hongyang He, Enfan Lin, Hongqiong Tang   +3 more
doaj   +1 more source