Results 61 to 70 of about 11,145 (183)

Evidences of Seasonal Aggregations and Breaching Behaviour of Blacktip (Carcharhinus limbatus) and Spinner (C. brevipinna) Sharks in a Southwest Atlantic Marine Protected Area

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 5, May 2025.
ABSTRACT This study indicates a seasonal aggregation behaviour in Blacktip (Carcharhinus limbatus) and Spinner (C. brevipinna) sharks over 6 years of data in Ilha Grande Bay, a warm temperate bay in Rio de Janeiro, Brazil. Observations from visual surveys, drone footage and Baited Remote Underwater Video (BRUV) deployments revealed mixed‐species ...
Fernanda Andreoli Rolim   +6 more
wiley   +1 more source

The Development Path, International Cooperation and Future Prospects for Magnetic Confined Fusion Energy in China

open access: yes南方能源建设
[Introduction] Fusion energy has the characteristics of large energy released through reactions, safe and reliable operation, abundant fuel sources, and low environmental pollution.
Zhibin WANG, Yang SHEN, Yi YU, Jian CHEN
doaj   +1 more source

X-ray emission from high temperature plasmas [PDF]

open access: yes
The physical processes occurring in plasma focus devices were studied. These devices produce dense high temperature plasmas, which emit X rays of hundreds of KeV energy and one to ten billion neutrons per pulse.
Harries, W. L.
core   +2 more sources

Confinement Efficiency and Stability of a Toroidal Magnetized Plasma Device with Sheared Magnetic Field Lines using an Internal Ring Conductor

open access: yes, 2012
In a new toroidal laboratory plasma device including a poloidal magnetic field created by an internal circular conductor, the confinement efficiency of the magnetized plasma and the turbulence level are studied in different situations. The plasma density
Pierre, Thiery
core   +5 more sources

Radiocarbon Isotopic Disequilibrium Shows Little Incorporation of New Carbon in Mineral Soils of a Boreal Forest Ecosystem

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 129, Issue 9, September 2024.
Abstract Boreal forests fix substantial amounts of atmospheric carbon (C). However, the timescales at which this C is cycled through the ecosystem are not yet well understood. To elucidate the temporal dynamics between photosynthesis, allocation and respiration, we assessed the radiocarbon (C14 ${}^{14}\mathrm{C}$) disequilibrium (D) between different ...
Andrés Tangarife‐Escobar   +7 more
wiley   +1 more source

Faraday Cups: Principles, Designs, and Applications Across Scientific Disciplines—A Review

open access: yesInstruments
Beam diagnostics are essential tools for monitoring the performance of charged particle beams and the safe operation of particle accelerators. The performance of an accelerator is determined by evaluating the properties of beam particles, such as energy,
Bharat Singh Rawat   +5 more
doaj   +1 more source

Comparative evaluation of solar, fission, fusion, and fossil energy resources, part 3 [PDF]

open access: yes
The role of nuclear fission reactors in becoming an important power source in the world is discussed. The supply of fissile nuclear fuel will be severely depleted by the year 2000. With breeder reactors the world supply of uranium could last thousands of
Clement, J. D., Reupke, W. A.
core   +1 more source

An optimized AC side startup strategy of E‐STATCOM for ITER pulsed power electrical network

open access: yesIET Generation, Transmission &Distribution, Volume 18, Issue 16, Page 2719-2731, August 2024.
In this article, an energy consumption optimization startup strategy of E‐STATCOM system using supercapacitor energy storage based MMC is proposed. This startup strategy avoids the use of current limiting resistors in supercapacitor energy storage circuits and reduces additional energy loss.
Tianbai Deng   +7 more
wiley   +1 more source

Novel types of anti-ecloud surfaces

open access: yes, 2013
In high power RF devices for space, secondary electron emission appears as the main parameter governing the multipactor effect and as well as the e-cloud in large accelerators.
Aguilera, L.   +11 more
core   +1 more source

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