Sentences with phrase «by presence»

The owner of that house allegedly became annoyed or threatened by the presence of Diaz and his friends.

Through a combination of single - molecule imaging and bulk biochemical experiments, the research team has shown that the genome - editing ability of Cas9 is made possible by the presence of short DNA sequences known as «PAM,» for protospacer adjacent motif.

«People recognize faces automatically as long as they have sufficient capacity to do so, but not when this ability is stretched by the presence of too many faces,» explains Thoma further.

While some species were less intimidated by the presence of humans, each had its own unique requirements in terms of what constitutes a suitable habitat and the length and width of possible corridor connections.

Instead, they found that Greenland's deltas are largely shielded from the ocean's waves by the presence of large, steep - cliffed fjords.

«The Theory of General Relativity (which has been subjected to rigorous tests) holds that gravity is a curvature of space - time caused by the presence of mass (or energy).

The snag is that in quantum mechanics, time retains its Newtonian aloofness, providing the stage against which matter dances but never being affected by its presence.

What's more, mothers» levels of parenting - related stress and other psychological symptoms were amplified by the presence of one or more clinical - level behavior disorders, Blacher and Baker said.

However, the wave would likely be dampened significantly by the presence of any coral reefs.

Their communication system is mediated, at least in part, by the presence of certain gut microbes.

The astronomers suggest that the orderly behaviour of the planetary nebulae could have been caused by the presence of strong magnetic fields as the bulge formed.

«The maintenance of a strong block to HIV - 1 in Old World monkeys implies a selective advantage, presumably imposed by the presence of HIV -1-like viruses during the evolution of this primate lineage,» the scientists write, adding that although humans carry a version of TRIM5 - alpha, it is not as effective in thwarting HIV transmission.

Typically, ER - positive tumor growth is driven by the presence of estrogen.

Their willpower was also influenced by the presence of others, regardless of whether a dietary temptation was unexpected or whether the dieter went looking for something to eat.

Kondor could have been prompted by the presence of a male partner - in - crime who was willing to help in return for more mating time, Marzec said.

A stem cell is generally characterized by the presence of various proteins — or cell markers — on its outer surface.

The fabric of the universe — the four dimensions of space and time — is full of lumps and bumps created by the presence of mass and energy.

After years of delays, library supporters are heartened by the presence of Ismail Serageldin, an Egyptian economist and city planner and former vice president of the World Bank, who took over this spring.

Their secondhand smoke exposure was measured by the presence of cotinine, a biomarker found in blood plasma that indicates nicotine exposure within the previous 48 to 72 hours.

«And they do say that they looked at all the different types of stellar activity and other things that could generate a spurious Doppler signal at 11 days, but after looking at all that, they concluded the variability in the data is best explained by the presence of a planet.»

HARPS allows for measurements of radial velocities of stars, which can be affected by the presence of nearby planets, to be taken with the highest accuracy currently available.

Combined, they allow us to get pretty close without being really bothered by our presence.

It can be challenging to find a suitable habitat for bald eagles in a city, but the advantage of an urban reintroduction, he says, is that more people can enjoy the birds and be educated by their presence.

The researchers found that the effects are largely determined by the presence or absence of different fauna, primarily small algae - eating crustaceans.

Even so, the authors consider this habit of parent birds to be the result of several factors: «We can not rule out that parental behaviour may be altered by the presence of feces near the nest,» they state.

The appetite - suppressing gut hormones peptide YY (PYY) and glucagon - like - peptide - 1 (GLP - 1) can be triggered by the presence of short - chain fatty acids (SCFAs) in the colon.

When his ownership of those memories is threatened by the presence of the second Sam, both must find a way to make sense of the new information.

These vocalizations are evoked by the presence of a predator and so are closely linked in time with a particular stimulus.»

Whether or not we could retain some sort of control of the machines, assuming that we would want to, the nature of our activities and aspirations would be changed utterly by the presence on earth of intellectually superior beings.

It said that everything that happens in the cosmos at large — be it an apple falling from a tree on Earth or the distant whirling of a cluster of galaxies — happens because stuff follows invisible contortions in space and time that are caused by the presence of other stuff.

Lentini was particularly struck by the presence of tiny cracks, or crazing, in the window glass in a dozen houses around the periphery, where the firemen had been able to reach with their hoses.

DID is characterised by the presence of two or more distinct «identities» or «personality states» — each with their own perception of the environment and themselves.

The new set - up differs from other types of thin - metal sensors currently in use, the authors note, because it detects molecules directly instead of measuring indirect changes caused by the presence of a chemical.

The release goes on to explain that HADD was founded in 1990 by A. Bern Hoff, parasitologist and environmentalist, after «the joy of hiking Mount Kilimanjaro in Africa, Galdhopiggen in Norway, Heleakula in Hawaii and the Kaibab Trail in the Grand Canyon was blunted by the presence of human and domesticated animal faeces on or near the trail».

Type 1 diabetes is an autoimmune disease that can be detected in asymptomatic individuals by the presence of islet autoantibodies that develop in children.

Instead, the researchers are using a plastic material which emits red light when illuminated with green laser light — and the amount of red light it emits is reduced by the presence of explosives.

Fascinated by the presence of so many injuries, Peterson and Dischler produced a three - dimensional computer model of a pachycephalosaur skull and mapped injuries onto it.

Specifically, the authors mixed two types of strands that differed only by the presence or absence of two oxygen atoms.

Women with the KRAS - variant are also more susceptible to triple - negative breast cancer, tumors whose growth is not fueled by the hormones estrogen and progesterone, or by the presence of a particular genetic mutation known as HER2, which promotes cancer cell growth.

For now, Hall and her colleagues plan to continue following the congenitally infected infants to determine if their development is adversely affected by the presence of HHV - 6 in their genomes.

Counters also monitored the colonies during the drone flights for signs that the birds may be startled by the presence of the drone,» Mr Hodgson said.

Electromagnetism is the physics of the electromagnetic field: a field, encompassing all of space, which exerts a force on those particles that possess the property of electric charge, and is in turn affected by the presence and motion of such particles.

The team's results showed that the Gutenberg discontinuity does not define the bottom of the plate, but instead is caused by the presence of olivine - melt mixtures within tectonic plates.

For example, a boat in the ocean is affected by the waves, but the ocean is not really affected by the presence of the boat.

The absence of material at the surface is compensated at depth by the presence of material that is denser than ice.

It's been 100 years since Albert Einstein presented his theory of general relativity, which describes space and time as a unified fabric, curved by the presence of matter and radiation within it.

In fact, he said, the Earth has a maximum temperature profile that is unique, since it is strongly influenced by the presence of life and the overall frequency and distribution of the world's biomes.

Down's syndrome is a genetic condition characterized by the presence of an additional copy of chromosome 21.

Due to experimental constraints caused by the presence of chamber walls, the change in growth rate that had to be measured was of the order 1 %, which poses a high demand on stability during the experiments, and experiments were repeated up to 100 times in order to obtain a good signal relative to unwanted fluctuations.

Approximately 50 percent of advanced melanoma tumors are driven to grow by the presence of BRAF mutations and another 20 percent by the presence of NRAS mutations.