Anglais example sentences with "emission"

Positron Emission Tomography uses a radioactive tracer to visualize metabolic activity within the human body.
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Filters stop emission of gas into the atmosphere.
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This machine is robust and emission-free.
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Because their rapid pulse of radio emission is so predictable, a large array of well-understood pulsars can be used to measure extremely subtle abnormalities, such as gravitational waves.
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By determining the time between the emission of the sound pulse and its reception, the sonar transducer can determine the range and orientation of the object.
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Parker Solar Probe has been designed to withstand the extreme conditions and temperature fluctuations for the mission. The key lies in its custom heat shield and an autonomous system that helps protect the mission from the Sun’s intense light emission, but does allow the coronal material to “touch” the spacecraft.
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To be absolutely sure the Solar Probe Cup would withstand the harsh environment, the Odeillo Solar Furnace—which concentrates the heat of the Sun through 10,000 adjustable mirrors—was used to test the cup against the intense solar emission.
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Environmental arguments for zero-emission wind and solar power don’t get much traction in Wyoming.
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Algeria needs to make significant decreases of carbon dioxide emission.
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Algeria needs to decrease its emission levels.
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Cars are equipped with emission-control filters.
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Saving energy can reduce the emission of greenhouse gases into the atmosphere.
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NASA’s Parker Solar Probe mission touched the Sun to provide us the first ever direct observations of the solar atmosphere, the corona, as well as traveling by Venus, where it gave scientists the first complete look at Venus’ orbital dust ring, detected a bright rim around the edge of the planet that may be nightglow, and discovered natural radio emission.
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They identify methane, tropospheric ozone, hydrofluorocarbons and black carbon as pollutants that could be targeted, with technologies that already exist, to drastically cut their release. Quickly implementing that strategy could off-set warming temperatures by up to 50 percent by 2050, and reduce sea level rise by 22 to 42 percent by the end of the century. Delaying emission cuts would reduce the beneficial impact.
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Australia had no such emission controls.
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Britain's own Climate Change Committee, an independent, statutory body established to advise the UK government on emission targets, says COP26 "marked a step forward in global efforts to address climate change."
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Miguel, an engineer, and Rogelio, a farmer and businessman, met over their shared passion for clean energy and an appreciation for the nopal, or prickly pear cactus. Together, they have found unique ways to harness the power of the plant. They created the first filling station in the world to sell emission-free biogas made from cactus, and now they’re taking their vision to a younger generation. We join them as they embark on their newest venture—building a cactus-powered biotechnology system to run parts of the Technological Institute of Iztapalapa in Mexico City.

That 1970 legislation gave the U.S. government the authority to sanction air polluters and set emission standards. But from the beginning, political and corporate resistance has made it difficult to implement.

A laser fires a light beam. Before the laser, scientists developed a similar device: a maser which stands for Microwave Amplification by Stimulated Emission of Radiation. A maser is basically a microwave version of the laser. Microwaves are a form of electromagnetic radiation similar to, but shorter than, radio waves. The best-known use of masers is in highly accurate clocks.

The world's first legally-binding treaty on mercury, reached Saturday after a week of talks in Geneva, Switzerland, aims to reduce global emission levels of the toxic heavy metal, which pose risks to human health and the environment.

A solar storm is the emission of electrically charged particles on the sun.