Sentences with phrase «ionizing radiation in»

Not that it proves anything WRT climate science, but still the cloud chamber left no doubt that cosmic rays, or ionizing radiation in general, can create nucleation sites.

Of course, the Achilles heel of the nuclear industry is the fear of «radiation» and ionizing radiation in particular.

As Fred has noted above, CERN CLOUD could provide support for the role of ionizing radiation in aerosol nucleation, but it won't change that assessment.

During balloon flights he and other physicists carried electroscopes to high altitudes with the goal of measuring ionizing radiation in the atmosphere.

Rivera M, Sukhdeo K, Yu JS, Ionizing radiation in glioblastoma initiating cells.

While these imaging procedures, including fluoroscopically guided procedures such as cardiac catheterization, computed tomography scans, and nuclear medicine studies, are critical for accurate diagnosis and intervention, ionizing radiation in high doses can be harmful.

Not exact matches

Are favorable mutations abundant enough to provide, in the time available, the variations which natural selection would require (mutations from ionizing radiations appearing to be both too rare and too predominantly unfavorable)?

Ionizing radiation (as in X rays) can harm the fetus during the first and last trimesters.

Organic means produce and other organic ingredients in retail products are grown without the use of synthetic pesticides and fertilizers, sewage sludge, genetically modified organisms or ionizing radiation.

Due to the high temperatures and intense radiation present, these atoms initially existed in an «ionized» state: The negatively charged electrons had been stripped from positively charged protons, leaving behind positive hydrogen ions (essentially, just protons).

In addition to emitting visible light, the stars also gave off ultraviolet (UV) radiation, which split the neutral hydrogen it encountered into electrons and protons — ionizing it once again, and thereby launching what researchers call the «epoch of reionization.»

The holes in the cheese represent places around stars and galaxies where UV radiation has ionized hydrogen atoms, bringing 21 - centimeter emissions to a halt.

Producing artificial aurorae has taught scientists unexpected lessons about how gases are ionized in the ionosphere, a process that helps protect Earth from harmful ultraviolet solar radiation.

In his research, Robin Ramstad has combined and compared measurements of the ion escape under varying solar wind conditions and levels of ionizing solar radiation, so - called extreme ultraviolet (EUV) radiation.

Can we build a machine that will work after 71,000 years in space, including millennia of intense ionizing radiation?

The researchers expect that the new equations will be a basis for formulating more reliable and efficient predictions of the usable lifetime of materials in nuclear reactors and other environments with high levels of ionizing radiation.

The detector developed at UNH, known as DoSEN, short for Dose Spectra from Energetic Particles and Neutrons, measures and calculates the absorbed dose in matter and tissue resulting from the exposure to indirect and direct ionizing radiation, which can change cells at the atomic level and lead to irreparable damage.

In reality, all of that ionizing radiation probably zapped the cosmos in a more uneven way, Frebel saiIn reality, all of that ionizing radiation probably zapped the cosmos in a more uneven way, Frebel saiin a more uneven way, Frebel said.

At one extreme, the scientists estimated fly ash radiation in individuals» bones at around 18 millirems (thousandths of a rem, a unit for measuring doses of ionizing radiation) a year.

This layer of the atmosphere forms when radiation from the sun strips electrons from, or ionizes, atoms and molecules in the atmosphere between about 75 and 1,000 kilometers above Earth's surface.

Ionizing radiation is a type of particle radiation in which an individual particle (for example, a photon, electron, or helium nucleus) carries enough energy to ionize an atom or molecule (that is, to completely remove an electron from its orbit).

We could get radiation - resistance genes, for example, from the Bdelloid rotifer, a class of small invertebrates that live in freshwater pools and survive megadoses of ionizing radiation.

But little is known about how ionizing radiation affects the extracellular matrix (ECM), a patchwork of proteins and other biomolecules that surrounds cells and plays a vital role in their shape, movement and signaling functions.

Cell phones use non-ionizing radiation, which differs from the ionizing radiation of x-rays and radioactive material in that it does not have enough energy to knock around — or ionize — electrons or particles in atoms.

But calculations of the amount of ionized hydrogen in intergalactic space depend on the ionization rate for the background radiation, and a lower ionization rate would mean less ionized hydrogen.

Optical imaging methods are rapidly becoming essential tools in biomedical science because they're noninvasive, fast, cost - efficient and pose no health risks since they don't use ionizing radiation.

The radiation was so intense that it ionized atoms in Earth's upper atmosphere for five minutes, disrupting some radio communications.

But a study in tomorrow's Proceedings of the National Academy of Sciences suggests ionizing radiation can stir up chemical changes in cytoplasm that lead to DNA damage.

Ionizing radiation can do scary things to a cell's nucleus, shuffling or deleting large chunks of DNA in ways that can turn cells cancerous.

One strong possibility is that the ultraviolet (UV) radiation from the first - generation galaxies in the one - billion - year - old Universe ionized the hydrogen gas.

«Radiation - related risk is one of the factors that should be considered in the decision to use cardiovascular imaging with ionizing radiation, particularly in younger patients in whom the potential risk of radiation exposure is thought to be higher,» Fazel said.

For most people, the risk of absorbing excess ionizing radiation comes mainly through breathing radon, a gas released by uranium and thorium in soils.

Using spectral readings from telescopes at the Keck Observatory in Hawaii, Hand has found high levels of oxidative chemicals such as sulfate, oxygen, sulfur dioxide and hydrogen peroxide on Europa's surface, which are produced as ionizing radiation from Jupiter scours it, splitting apart water molecules and sulfur compounds in the uppermost layers of its ice.

In small amounts «they don't do you any harm, but they are very specific and the only thing that can cause them at a certain magnitude is ionizing radiation.»

The haze results from chemical reactions in the upper atmosphere, where ultraviolet radiation from the sun ionizes nitrogen and methane, which react to form tiny hydrocarbon particles tens of nanometers in diameter.

The results will be used to accurately calculate the damage and radiation dose delivered to patients in radiotherapy, when cancer cells are bombarded with ionizing radiation.

Dr. Su and her collaborators at University of Colorado, Boulder used ionizing radiation (IR) to induce DNA damage and apoptosis in cells of the wing imaginal disc, the immature form of the fly's wings.

As more stars and galaxies formed, they eventually generated enough radiation to flip hydrogen from neutral, a state in which hydrogen's electrons are bound to their nucleus, to ionized, in which the electrons are set free to recombine at random.

On the other hand, ionizing radiation such as x-rays and the used in CT scans or gamma - ray Mammograms do have enough power to change matter, because the wavelength is low and of high energy.

Biophysical studies have shown that the damage arising to cells from an exposure to ionizing radiation declines in a linearly manner with decreasing dose, with some damage still occurring even at the lowest doses.

The physicist specializing in radiation dosimetry of the Institute of Physics of the UNAM, said that ionizing radiation is used in the diagnosis and treatment of cancer.

Researchers at the Helmholtz Zentrum München now report the discovery of a very unexpected role for one such lncRNA, which they call PARTICLE, in regulating the response of cells to ionizing radiation.

The intense radiation from an AGN can ionize the gas around it (called photoionization), and this may be one mechanism at work in MAMMOTH - 1.

When ionized hydrogen in the nebula recombines it would emit Lyman - alpha radiation.

The team used several hundred thousand compute hours at NERSC to produce a series of 2D and 3D simulations that helped them examine the role of dark matter halo photoevaporation — where energetic radiation ionizes gas and causes it to disperse away from the halo — played not just in the early formation of stars but also the assembly of later galaxies.

Five had been exposed to ionizing radiation earlier in their lives.

When cells in culture are exposed to ionizing radiation, even those not directly hit sustain damage to chromosomes.

Considerable previous research in cell cultures has demonstrated that low doses of ionizing radiation results in «bystander» effects, in which nearby, unexposed tissues suffer cell death, mutations, and tumor - inducing growth (ScienceNOW, 7 September 2005).

Eighty percent of its stellar mass has formed in just the past few million years, marking this as an exceptionally young galaxy, producing copious amounts of ionizing radiation.

In follow - up observations from Kitt Peak National Observatory and the Lick Observatory, his team found 20 galaxies that had gas that was ionized by radiation from a quasar, rather than from the energy of star formation.