The global demand for sustainable energy sources has intensified the search for environmentally friendly alternatives to fossil fuels. Biomass waste, a byproduct of various industrial processes, presents an untapped potential ...
Biochemistry
13 hours ago
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10
The global transition towards sustainability has sparked significant interest in bio-based materials and energy-efficient technologies. Among these, cellulose nanocrystals (CNCs), derived from renewable resources, have shown ...
Nanomaterials
13 hours ago
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1
In 1998, scientists discovered that our universe expands with acceleration, and in order to explain this effect, the concept of dark matter was introduced. This is a special type of energy that fills up all of existing space-time ...
Astronomy
17 hours ago
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A small team of biologists and animal movement specialists in the Netherlands and the U.K. has found that birds such as the emu have a grounded running style at medium speeds, allowing them to conserve energy compared to ...
Norway inaugurated Thursday the gateway to a massive undersea vault for carbon dioxide, a crucial step before opening what its operator calls the first commercial service offering CO2 transport and storage.
Environment
Sep 26, 2024
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Rechargeable lithium-ion batteries are growing in adoption, used in devices like smartphones and laptops, electric vehicles, and energy storage systems. But supplies of nickel and cobalt commonly used in the cathodes of these ...
Nanomaterials
Sep 25, 2024
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Researchers led by Ryuhei Nakamura at the RIKEN Center for Sustainable Resource Science (CSRS) in Japan and The Earth-Life Science Institute (ELSI) of Tokyo Institute of Technology have discovered inorganic nanostructures ...
Earth Sciences
Sep 25, 2024
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1
Hot carrier solar cells, a concept introduced several decades ago, have long been seen as a potential breakthrough in solar energy technology. These cells could surpass the Shockley–Queisser efficiency limit, which is a ...
Condensed Matter
Sep 24, 2024
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Oregon State University researchers are part of a team looking at reducing bird collision risks with wind turbines by painting a single blade of the turbine black.
Ecology
Sep 24, 2024
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Achieving carbon neutrality requires the effective use of renewable biomass. In the production of biodiesel, for instance, glycerol is generated as a major byproduct. Researchers at Osaka Metropolitan University have developed ...
Analytical Chemistry
Sep 24, 2024
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In physics, energy (from the Greek ἐνέργεια - energeia, "activity, operation", from ἐνεργός - energos, "active, working") is a scalar physical quantity that describes the amount of work that can be performed by a force, an attribute of objects and systems that is subject to a conservation law. Different forms of energy include kinetic, potential, thermal, gravitational, sound, light, elastic, and electromagnetic energy. The forms of energy are often named after a related force.
Any form of energy can be transformed into another form, but the total energy always remains the same. This principle, the conservation of energy, was first postulated in the early 19th century, and applies to any isolated system. According to Noether's theorem, the conservation of energy is a consequence of the fact that the laws of physics do not change over time.
Although the total energy of a system does not change with time, its value may depend on the frame of reference. For example, a seated passenger in a moving airplane has zero kinetic energy relative to the airplane, but non-zero kinetic energy relative to the Earth.
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