Sentences with phrase «radiation environment of»

There are many open questions about 55 Cancri e, especially: Why has the atmosphere not been stripped away from the planet, given the perilous radiation environment of the star?

High - power gallium nitride - based high electron mobility transistors (HEMTs) are appealing in this regard because they have the potential to replace bulkier, less efficient transistors, and are also more tolerant of the harsh radiation environment of space.

Not exact matches

Authored by John Laforge of CounterPunch The radiation dispersed into the environment by the three reactor meltdowns at Fukushima - Daiichi in Japan has exceeded that of...

E) The stories of the people, who are forced to be alienated from their natural abode, whose environments are destroyed and polluted and poisoned by the industrial chemicals and atomic - radiation, whose lifeline is threatened by the deforestization and pollution of the fishery are countless.

If from the natural «radiation» of body, soul, and both as «personality», sin in us is a principle of dissolution, even in the material environment, then grace likewise, especially the grace of Christ, the summit of God's Unity - Law in creation, is also a principle of life, restoration and healing.

Fairén says there is growing evidence that the harsh environment on the martian surface — a combination of frigid temperatures, caustic chemicals and deadly cosmic radiation — would kill Earth's microbes quickly, especially in the limited numbers that ride along with robots.

It also provides an electrically attractive environment that causes carriers that are scattered out of the two - dimensional electron gas by radiation - induced defects to be reinjected.

Biochemists have managed to synthesise 10 of them in experiments that simulate lifeless prebiotic environments, using proxies for lightning, ionising radiation from space, or hydrothermal vents to provide the necessary energy.

They have found Cephalosporium (fungi that live in highly acidic environments), Euglena and Chlorella (algae that grow in heavy metals), and a cockroach that can survive massive doses of gamma 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 hunter - gatherers also had a high frequency of genetic variants linked to reduced skin pigmentation — a known adaptation to environments with low UV radiation, such as those at high latitude.

The sentence marked with an asterisk was changed from «In fact, fly ash — a by - product from burning coal for power — and other coal waste contains up to 100 times more radiation than nuclear waste» to «In fact, the fly ash emitted by a power plant — a by - product from burning coal for electricity — carries into the surrounding environment 100 times more radiation than a nuclear power plant producing the same amount of energy.»

In the case of frogs, such analysis pinpointed the radiation of most living frogs at about 100 million years ago, which was a puzzle, since Earth's environment was stable at that time.

Unlike chemotherapy and radiation — which indiscriminately damage cells and tissues, healthy or otherwise — the CD45 - targeting antibodies leave the thymus and the bone marrow, environments critical to the formation of T cells and innate immune cells, unharmed.

A final - year Italian Ph.D. student in materials surface science, Erik Vesselli describes how the presence of many big institutions in Trieste, in particular the synchrotron radiation facility at ELETTRA, have contributed to offer him a dynamic, international, and creative scientific environment.

The composition of microbes on frog skin can reflect the environment, and environmental conditions — including solar radiation and temperature regimes — differ between continuous and fragmented forests.

«Sunlight is a mixture of electromagnetic radiation made up of near - UV rays, visible light, and infrared energy, or heat,» said Yueh - Lin (Lynn) Loo, director of the Andlinger Center for Energy and the Environment, and the Theodora D.»78 and William H. Walton III»74 Professor in Engineering.

The major result of Mass. v. EPA «is that business will go and try to make a deal with Congress regarding federal regulations on greenhouse gas emissions,» says Mary Nichols, director of the Institute of the Environment at the University of California, Los Angeles, and former EPA assistant administrator of air and radiation.

The team subjects vials of amino acids to extreme temperature, pH, ultraviolet radiation, gamma radiation and other conditions designed to mimic environments on Mars; Enceladus, a moon of Saturn; and Europa, a moon of Jupiter.

From a hardware perspective, the Van Allen Probes» most significant challenge was to operate and perform measurements in the severe charged particle environment of the radiation belts, a region of space most spacecraft avoid.

All of which leads me to conclude there is a market for clothes that are crash - bullet - blast - toxin - radiation - proof and that also monitor both the wearer and his environment for threats.

It's very, very difficult to quantify these particle intensities in the harsh environment of the radiation belts, but we are doing just that.

«They provide us with an echo of real ecological processes, like adaptive radiations, when an organism rapidly diversifies due to a change in environment or to fill a new niche,» O'Dwyer said.

As well as its ability to pierce armour plating, DU has the unfortunate tendency to ignite on impact, creating clouds of uranium oxide dust — facilitating its spread in the environment and increasing the danger posed by the alpha radiation it emits.

To carry out an exhaustive two - year survey of extrasolar planets in both celestial hemispheres, TESS needed to occupy a very particular position in space, a highly stable place that maximized sky coverage and gave the observatory a mostly unobstructed view of the cosmos, all from a low - radiation, thermally benign environment.

Such a brief, violent generation of stars significantly alters the surrounding environment with blasts of ultraviolet radiation and charged particles.

Understanding the risks of radiation and the other extreme environments of space flight «is critical to provide safe passage for human exploration to the moon and Mars,» says microbiologist Cheryl Nickerson of Arizona State University in Tempe.

But, while 400 pounds of titanium can do magical things, it can't do it forever in an extreme radiation environment like that on Jupiter.

Europa's surface is an extremely hostile environment, as a result of constant exposure to Jupiter's intense radiation belts.

These alert signals are programmable, interesting for those users who wish to control that their exposure to levels of radiation in their environment obey the specific limitations.

Only in this way could we really know the radiation levels of each person in his environment.

Fallout is a mélange of the vaporized environment — soil and structures that were near the blast — laced with fission products (radioisotopes created when fissile materials like uranium or plutonium fission), activation products (radioisotopes formed when the blast radiation transmutes shielding and other bomb components), and residual nuclear material.

Assessing the impact of any exposure to radiation in the environment may require cohort studies to look for a raised incidence of cancers years from now among people living in regions with raised levels of contamination.

The largest of these eruptions cause what is known as space weather — the radiation, energetic particles and magnetic field releases from the Sun powerful enough to cause severe effects in Earth's near environment, such as the disruption of communications, power lines and navigations systems.

«The radiation dose rates from measurements obtained over the last four years exceeded trends from previous solar cycles by at least 30 percent, showing that the radiation environment is getting far more intense,» said Nathan Schwadron, professor of physics and lead author of the study.

Of particular interest are changes in mechanical and thermal transport properties with which researchers try to determine the lifetime for safe use of the material in engineering systems within radiation environmentOf particular interest are changes in mechanical and thermal transport properties with which researchers try to determine the lifetime for safe use of the material in engineering systems within radiation environmentof the material in engineering systems within radiation environments.

If unchecked, a meltdown can send superheated fuel through the steel and concrete that surrounds it, damaging or destroying the reactor and releasing extreme levels of radiation into the environment.

According to new observations from NASAs Hubble Space Telescope of a star - forming region in a nearby galaxy known as the Large Magellanic Cloud, intense radiation and powerful winds from massive, ultrabright baby stars have sculpted their environment, carving a large cavity in their natal nebula, N83B.

Heat exchange between an organism and the environment is complex, consisting of conduction, convection, radiation and evaporation.

Extremely turbulent environments can disrupt the normal procession of material onto a protostar, while intense radiation — from massive nearby stars and supermassive black holes — can blast away the parent cloud, thwarting the formation of all but the most massive of stars.

Steve Wing, an epidemiologist from the University of North Carolina, Chapel Hill, points out that even the low levels of radiation that remain in the environment could be significant in the long run «because so many more people are exposed, even though the dose per person decreases farther from the plant.»

Such safety limits are based on long - term consumption of these foods, says William McCarthy, deputy director of the radiation protection program within the Environment, Health and Safety Office at the Massachusetts Institute of Technology (MIT) in Cambridge.

«If we can identify similar genetic loci in people, and if we could find biomarkers for these gene - environment interactions, then perhaps we could develop a simple blood test that identifies people who are at high risk of cancer from low - dose radiation,» says Mao.

One of the main reasons for limiting the operating lifetimes of nuclear reactors is that metals exposed to the strong radiation environment near the reactor core become porous and brittle, which can lead to cracking and failure.

Since the Jovian radiation belt environment is considered to be one of the most intense and hazardous environments in our Solar System, several models to describe it have been developed (e.g. Santos - Costa et al. 2001; Santos - Costa & Bourdarie 2001; Sicard - Piet et al. 2011).

Three keys to the radiation of angiosperms into freezing environments.

The radiation belt environments of the outer planets are quite different from the one of the Earth, mainly due to the presence of moons and rings embedded in these systems.

NuScale's design incorporates seven layers of defense to prevent the release of radiation or radioactive contamination into the environment.

To understand Earth's changing radiation environment: Regular monitoring of the stratosphere over California shows that cosmic rays have intensified more than 10 % since 2015.

A number of scientific aspects of Omega Centauri are discussed as the story progresses, including the likely radiation environment inside the cluster and what the sky might look like from inside the cluster.