Sentences with phrase «occur over»

Processes that have historically altered the face of the planet, like cycles in the Earth's orbit around the Sun or shifts in continental tectonic plates, occur over tens of thousands to millions of years.

Faster waves called spindles, which take to occur over 12 times per second, were also focused on.

«Though very rarefied by Earth standards, these interstellar clouds are the sites of complex chemical reactions that occur over hundreds - of - thousands or millions of years,» said Jan M. Hollis of the NASA Goddard Space Flight Center in Greenbelt, Md. «Over time, more and more complex molecules can be formed in these clouds.

Specifically, they want to find out if neutrino oscillations occur over short distances (less than 65 feet).

Small fluctuations in the sun's output occur over a roughly 11 - year cycle (peak - to - peak) and vary by as much as 0.25 watts per square metre (W / m2).

He will formally assume the editorship on November 1, and the transition to the new position will occur over several weeks.

In a paper published in Science Advances, he proposes that mass extinction occurs if one of two thresholds are crossed: For changes in the carbon cycle that occur over long timescales, extinctions will follow if those changes occur at rates faster than global ecosystems can adapt.

These major pH reductions are projected to occur over important deep - sea features, such as seamounts and canyons (Gehlen et al., 2014).

The abrupt transitions into and from stadial conditions could occur over a few decades and even few years.»

The gray matter it contains acts as a marker for neurological disorders that can occur over time, including mild cognitive impairment and Alzheimer's.

In montane environments, environmental differences can occur over an elevation gradient, favouring local adaptations across small spatial scales.

Although their work remains a milestone in successfully reproducing the intricate shapes, the method assumed that only neighboring clumps of material, about a micrometer in length, interacted — neglecting processes that occur over a continuum of distance scales.

The biggest temperature changes were projected to occur over needleleaf forests, tundra and agricultural land used to grow crops.

Such analyses, while useful, only paint a broad picture of snowfall's response to global warming, and may miss specific events, like a large blizzard that may occur over a day or two.

The observation of the formation and breakdown of the super-hydrated kaolinite bears important information about the processes that occur over a depth range of about 75 kilometres to 480 kilometres in subduction zones.

This is in contrast to average snow events, which may occur over a broader temperature range.

Still, no study to date has followed the same person over the course of their romantic life to determine whether neural changes do occur over time.

«We are now beginning to understand the complicated biological processes that occur over time and leave these residual mutational signatures on cancer genomes.»

The committee that carried out the study and wrote the report estimated potential contributions from families and the public sector over phases, recognizing that increases in ECE funding will need to occur over time.

«It's a collection of tools, and it's a way of understanding phenomena that occur over a wide range of fields.»

«The study provides more realistic modeling estimates of how much vegetation change will occur over the 21st century and will allow better predictions of future climate change,» she said.

To participate in the challenge, researchers must make a submission every month, guessing how many chikungunya cases will occur over the remainder of the 6 - month competition in each of the 35 member countries of the Pan American Health Organization.

US and Russia) is the chance CaSSIS offers to study changes that occur over the day and over the Martian seasons.

«Usually, mutations occur over weeks or months.

According to the National Alliance on Mental Illness: «It is too early to classify schizophrenia as either a neurodevelopmental (impairment of the growth and development of the brain) or a neurodegenerative (progressive loss of structure or function of neurons) disorder, as both seem to occur over the course of the illness.

Glasses have many important industrial applications, yet understanding the changes that occur over the wide range of time and length scales of the glass transition remains a challenge.

The asbestos - related lung abnormalities «can be particularly relevant when potentially combined with other respiratory [diseases] that can occur over a person's lifetime that can impact lung function,» Dr Lockey and coauthors conclude.

The potential power of structural balance theory is its ability to predict patterns in the structure of the whole social network and also predict changes that occur over time, as unstable triads are expected to change to stable ones.

«These dramatic changes occur over roughly 200 to 1,000 years, which is the blink of an eye in cosmic time.»

Although the researchers have shown that certain superconductors can carry spin currents, so far these only occur over short distances.

Developing a better understanding of the large - scale mechanical changes that occur over longer distances, specifically the process by which the extracellular matrix is pulled into compact, highly - aligned «bridges,» could eventually form the basis of treatments for related diseases.

«The eight months we demonstrate in this paper is not a limit, but what this does show is that mesh electronics could be used... to investigate neuro - degenerative diseases like Alzheimer's, or processes that occur over long time, like aging or learning.»

Such ideal circumstances occur over remote deserts and mountains, where the stars appear only slightly less brilliant than they do from outer space.

Many scientists question his interpretations: Impacts are most likely to occur over the ocean, and small ones that happen over land are most likely to affect unpopulated areas.

Naturalists have long observed this trend geographically, but as Smith notes, Secord and his colleagues present a strong case for the correlation to occur over deep archeological time.

The episodes last from a few seconds to minutes and can occur over 30 times an hour.

This can occur over time, as white women are quickly achieving parity in some scientific fields, as the group that is the main beneficiary of affirmative action policies that were fought for primarily by African Americans.

Like the locust, much of the cockroach genome, some 60 %, is made of repetitive elements — sequences of DNA that occur over and over.

The average observed increase since 1900 is 0.92 K. Most increases in temperature occur over the Arctic, which is melting quickly.

Prior to the onset of a nearly monotone booming, burps of sound of smaller amplitude occur over a significantly broader span of frequencies.

As Titan lacks its own magnetic field the same thing can occur over wider regions, not just near the poles.

«We expect a commercialization decision to occur over the next several months,» the company said in a statement.

The scientists» work, published in September in Current Biology, reveals the impact of the warming predicted to occur over the next 50 years.

Those shifts would occur over years, but radio astronomers already have 30 years of data they can search through, she says.

All this is expected to occur over the next several months.

«A meeting can not validly be held by telephone nor can voting occur over the phone,» said Robert Freeman, executive director of the state Committee on Open Government.

Additional broadcasts occur over the weekend, on Saturday, October 22 at 6 a.m. and Sunday October 23 at 6 p.m. Audio and a full transcript will be available online (on «The Campbell Conversations» page) Thursday, October 20 at 6 p.m.

The move will occur over the next few months, he said.

Its report criticises the changes which inevitably occur over the long - term PFI projects, some of which have a lifespan of up to 30 years.

That any loss of life should occur over what is a disgraceful piece of hate speech is sad enough.