Sentences with phrase «cause chemical changes»

A pH of less than 7 is said to be «acidic» while a pH greater than 7 is «basic» or «alkaline,» and the more acidic a substance, the more it can react with other substances and cause chemical changes.

Environmental stresses cause chemical changes to DNA that turn genes on and off.

Low energy electrons are ubiquitous and are known to play important role in variety of phenomena relevant to astrochemistry (where they participate in synthesis of new molecules), in radiation biology (where they cause chemical changes in living cell, plasma chemistry), atmospheric chemistry, radioactive waste management and nanolithography — to name but a few.

«By doing that, you're getting a more perfect shell that's less likely to cause chemical changes to the surface of the nanoparticle core.»

Roasting causes chemical changes in many (if not all) nuts that releases acrylamide, a carcinogen.

[Robert Siman et al, Serum SNTF Increases in Concussed Professional Ice Hockey Players and Relates to the Severity of Post Concussion Symptoms] A strong blow to the head causes chemical changes within nerve cells that damage their structural proteins.

Cosmic rays from outside the solar system can also inject ions into lunar rocks, causing chemical changes that create water.

«Either low B12 drives fat accumulation in the fetus, and this leads to increased leptin, or the low B12 actually causes chemical changes in the placental genes that produce leptin, making more of the hormone.

This is thought to cause a chemical change in the brain that lifts your mood and eases other symptoms of SAD, reports the Mayo Clinic in the US.

Cigarette smoking causes chemical changes in the body that increase the aging process.

Stress, especially chronic stress, causes chemical changes and inflammation in the body.

This process works by causing a chemical change within the mitochondria of cells that stimulates injured cells to heal at an accelerated pace.

Exposure to ultraviolet light causes chemical changes that alter the shape of your DNA, and the process that corrects DNA's shape can also cause changes to the DNA code.

But then, scientists started to document that, in fact, when that carbon dioxide goes into the ocean, it causes chemical changes.

Not exact matches

Poltergeist, Richard did not deny that a religious experience could not cause changes in brain patterns complete with chemical reactions.

This miniscule chemical aberration may cause a large or small change in the encoded organism.

Hormone changes due to induced abortion may indeed be related to breast cancer, but there are other known causes of hormone changes that we should worry about, including the widespread use of chemical contraceptives, fertility drugs that cause hormone surges, increased obesity and fat content in the diet that change the body's estrogen metabolism, and last but not least, chemical contaminants in the environment that mimic estrogen....

By turning manure and wastewater into a power source, dairy farms could curb their climate - change causing emissions and keep harmful chemicals out of the surrounding environment.

The company claims the ingredient can maintain its chemical, physical and sensory characteristics during prolonged storage time and avoids quality deterioration caused by changes in temperature.

Just by changing the way we farm, by stopping deep tilling, mono - cropping, and chemical fertilizer use — the Climate Collaborative estimates regenerative carbon farming practices could mitigate as much as 4 billion to 6 billion tons of CO2 equivalents a year or 10 percent to 12 percent of global human - caused emissions.

Doesn't microwaving food destroy enzymes and cause dangerous chemical changes??

While rashes can be caused by a variety of problems (food allergies, yeast, etc.), the majority of these rashes come from contact allergies to diaper and wipe chemicals and dyes, lack of air, higher diaper temperatures, and infrequent changing because diapers feel dry when they are saturated with urine.

Ultrasound machines don't use radiation and cause no known physical or chemical changes that could affect your baby.

During pregnancy, hormone changes can affect brain chemicals and cause depression and anxiety.

This subtle change caused many volatile petroleum chemicals to dissolve more rapidly and become entrapped in the deep sea.

Scientists could seek to understand the subtle pressure of light that causes asteroids to change their spin, and could retrieve samples for dating and chemical analysis that would offer a clearer picture of Solar System material than do meteorites, which, although they are pieces of asteroids, are altered during their fall through Earth's atmosphere.

But Darwinism says that there has been change through time, since all life comes from a common ancestor — something that appeared to be supported when, early in the 20th century, scientists discovered that X-rays and specific chemicals caused mutations.

Stress is thought to cause «epigenetic» changes to genes, which do not alter the sequence of their DNA but instead leave chemical marks that dictate how active genes are.

The researchers proved that this was caused by chemical «epigenetic» changes to parts of the gene that codes for Hnf4a, making it less active than it should be.

The protolith is subjected to heat and extreme pressure causing profound physical and / or chemical change.

Sometimes methyl groups attached to DNA thanks to changes in diet; other times, exposure to certain chemicals appeared to be the cause.

DNA damage caused by replication errors includes copying mistakes, insertions or deletions of DNA, and chemical changes that alter the DNA's message.

For instance, alterations to these chemical switches can change the architecture of the heterochromatin, causing genes to be expressed or silenced.

The authors speculate that the decline in lung function is attributable to the irritation that most cleaning chemicals cause on the mucous membranes lining the airways, which over time results in persistent changes in the airways and airway remodeling.

The quantities of certain chemicals with known roles in insect learning (octopamine), aversive conditioning (dopamine) and aggression (serotonin) were all reduced by the procedure, suggesting that as with their mammalian counterparts, duress in bees causes sustained, system - wide changes in brain state — a possible analogue of mood.

TEMPERATURES are rising in France over a proposed change to European safety rules that would ban high concentrations of a chemical in suntan lotions because of suspicions that it may cause cancer.

«There must have been regional climate and chemical conditions that varied in time and space,» he says, adding that this would occur as the tilt of Mars's spin axis changed over tens of thousands of years, a wobble caused by the lack of a massive moon to stabilise the planet.

Robert Watson, an atmospheric chemist at the University of East Anglia in the United Kindgdom, is being honored for his studies of the ozone hole and work toward an international agreement to ban the use of the chemicals causing ozone depletion; he later chaired the Intergovernmental Panel on Climate Change.

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 toxin did not appear to be altering gene sequences; instead, Skinner and colleagues found, vinclozolin was somehow causing other chemical groups to latch onto certain genes, changing their expression (Science, 3 June 2005, p. 1391).

He found major changes in baby coral caused by these chemical additions to the water, both during the lifetime of the organisms and beyond.

In order to understand these effects more precisely, Neher and cowork - ers investigated epigenetic changes in the microglia, i.e. chemical modi - fications to the DNA or its packaging proteins that cause certain genes to become more or less active.

Dr Kaarre continued, «Generally, our work showed that alcohol causes more pronounced changes in both electrical and chemical neurotransmission in men than women.

They found that both bunch rot and powdery mildew caused nuanced changes in the composition of (chemical) aroma substances, changing the odor of the wines to the point where the wines» aroma quality was significantly affected.

Hepatic encephalopathy occurs when the liver can not remove certain toxins and chemicals, such as ammonia, from the blood.1 These toxins and chemicals then build up and enter the brain.1 Hepatic encephalopathy is one of the major complications of cirrhosis (scarring of the liver), and a leading cause of hospital re-admission due to its recurrence, despite treatment.1 It can occur suddenly in people with acute liver failure, but is seen more often in those with chronic liver disease.1 Symptoms of hepatic encephalopathy include mild confusion, forgetfulness, poor concentration and personality or mood changes, but can progress to extreme anxiety, seizures, severe confusion, jumbled and slurred speech and slow movement.1 The first step in treatment is to identify and treat any factors that cause hepatic encephalopathy.2 Once the episode has resolved, further treatment aims to reduce the production and absorption of toxins, such as ammonia.1 Generally, there are two types of medication used to reduce the likelihood of another hepatic encephalopathy episode — lactulose and rifaximin.2 However, it remains a leading cause of hospitalisations and re-hospitalisations in cirrhotic patients, despite the use of the above - mentioned standard of care treatment.

A chemical called bisphenol A — BPA — used in plastic packaging and in the linings of food and beverage cans, may be passed from a mother to her offspring during pregnancy and cause changes in the gut bacteria of the offspring, according to an international team of researchers.

In a second experiment, the team investigated whether the treatment caused changes in chemicals known to be involved in «long - term potentiation» (LTP)-- a type of brain activity key to memory formation.

«Botany and health: Very small chemical changes to dietary flavonoids cause very large effects on human immune system.»

Scientists at the University of York have discovered that very small chemical changes to dietary flavonoids cause very large effects when the plant natural products are tested for their impact on the human immune system.

Ciliopathies are caused by defects in cilia, finger - like projections from cells that act as microscopic «antenna» to detect and respond to chemical changes or fluid flow outside the cell.