Sentences with phrase «linked by a chemical»

This chemically enhanced X-ray technique revealed that DNA was composed of two complementary strands of nucleic acids linked by chemical bonds on a ladder - like chain.

But the nature of these dimers has been hotly debated because it was not known whether the two beta - amyloid molecules that form the dimer were linked by a chemical bond or not.

Not exact matches

Chief executive Andrew Liveris told the Wall Street Journal that a potential name change would hopefully help position the company as one linked by «chemistry rather than chemicals» as it transforms.

The US Food and Drug Administration (FDA) has played down any potential danger from the findings, which were uncovered by the Associated Press news agency, suggesting levels of the chemical, which is linked to the recent Chinese dairy scandal, were much lower in US infant formulas.

It is a carcinogenic chemical, listed by the EPA as the most toxic of all cancer - linked chemicals.

It was noted that xylene and ethyl benzene were emitted by the diapers, chemicals that are suspected endocrine, neurological and respiratory toxins; along with styrene, a chemical linked to cancer and isopropylene, a neurotoxin.

Dioxin, by far the most toxic of chemicals regulated by the Environmental Protection Agency, is linked to cancer, birth defects, liver damage, skin diseases, immune system disorders and changes in endocrine regulation.

It is a carcinogenic chemical, listed by the EPA as the most toxic cancer - linked chemical.

Physical punishment is associated with a range of mental health problems in children, youth and adults, including depression, unhappiness, anxiety, feelings of hopelessness, use of drugs and alcohol, and general psychological maladjustment.26 — 29 These relationships may be mediated by disruptions in parent — child attachment resulting from pain inflicted by a caregiver, 30,31 by increased levels of cortisol32 or by chemical disruption of the brain's mechanism for regulating stress.33 Researchers are also finding that physical punishment is linked to slower cognitive development and adversely affects academic achievement.34 These findings come from large longitudinal studies that control for a wide range of potential confounders.35 Intriguing results are now emerging from neuroimaging studies, which suggest that physical punishment may reduce the volume of the brain's grey matter in areas associated with performance on the Wechsler Adult Intelligence Scale, third edition (WAIS - III).36 In addition, physical punishment can cause alterations in the dopaminergic regions associated with vulnerability to the abuse of drugs and alcohol.37

The chemical has been deemed hazardous by the state and has been linked in some studies to an increased risk for cancer, thyroid disease and other serious ailments.

By January, the administration declared the factory linked to the chemical a state Superfund site and started the process to get the polluters, St. Gobain and Honeywell, to pay for cleanup.

The experts, including one formerly employed by the state health department and three others that have extensively studied the cancer - linked chemical found at high levels in the Hoosick Falls water supply, reviewed the question - and - answer document at POLITICO's request.

The Cuomo administration resisted sounding a public alarm even though federal regulators warned senior health department officials that people in Hoosick Falls should be alerted they were drinking water that contained dangerous levels of a chemical linked to cancer and other serious health problems, according to documents recently obtained by POLITICO New York through a Freedom of Information Request.

Next, the team added an electrical synapse between two neurons normally joined by a chemical link.

Driven by revelations of lead in children's toys, hormone - mimicking chemicals in plastic baby bottles and controversial flame - retardants in furniture, state environmental officials drafted a set of rules aimed at products with chemicals that have been linked to illness or abnormal development

As long ago as the 1950s, scientists discovered that many diseases — including heart disease, strokes, cancer, diabetes, cataracts, arthritis and neurodegenerative disorders such as Parkinson's and Alzheimer's — were linked to damage caused by highly destructive chemicals called free radicals.

A normal cell has chemical receptors on its surface that link up with specific molecules generated by the body and control the timing of such functions as eating and sleeping.

You reported the decision by the journal Food and Chemical Toxicology to withdraw a paper that linked GM maize to...

Soil layers are identified by coloration and tested for physical and chemical alterations linked to human activity.

The system works by combining DNA «templates» - short segments of DNA — with the chemical building blocks of molecules, each of which is linked to its own complementary piece of DNA.

Today, the question has been taken up by cognitive scientists who want to link facial expressions to emotions in order to track the genes, chemicals, and neural pathways that govern emotion in the brain.

«We know a lot about the behavioral processes that are regulated by these chemicals, and we know a lot about the chemicals themselves, but we don't know much about the missing links in between those two things,» Tsutsui says.

Inside the AlloSphere, researchers such as Van de Walle use a joystick to maneuver through three - dimensional constellations of the oxygen, hydrogen and zinc atoms (linked by a complex lattice of chemical bonds) that make up these conductors.

On the drinking - water front, researchers from IBM, Central Glass, Ltd., of Japan, the King Abdul Aziz City for Science and Technology (KACST) in Saudi Arabia, and the University of Texas at Austin are developing a new type of membrane that is resistant to damage by chlorine (the chemical most often used prevent bacterial growth in water supplies) and designed to filter out salts and harmful toxins in water such as arsenic (long - term exposure of which has been linked to cancer and other ailments) potentially creating new sources of drinking water.

Most sequencing technologies tick off the sequence of DNA's four chemical letters — A's, G's, C's, and T's — by linking fluorescent molecules to the letters and the progression of colors produced by running through the sequence of each DNA strand.

Founded in 1994 by women's health activists, Silent Spring Institute leads groundbreaking studies to identify the links between environmental chemicals and breast cancer, opening new doors to understanding the health risks associated with toxics where we live and work.

Karen is particularly motivated to be a part of Team LunaChix because of its pledge to raise money for the Breast Cancer Fund, which supports the prevention of breast cancer by eliminating our exposure to toxic chemicals and radiation linked to the disease.

Still, by the 1990s DuPont knew that the chemical caused cancerous tumors in the testes, pancreases, and livers of lab animals, and there was even evidence of human DNA damage and links to prostate cancer in workers exposed to PFOA.

Practically everyone with an Internet connection has seen them by now: those links, often posted on Facebook by well - meaning friends, claiming that the foods we eat are filled with iffy chemicals and banned in every nation but our own.

In a study done by Environmental Working Group in 2012, it was found that newborn babies had over 200 different chemicals in them including: Mercury — harms brain development and function Polyaromatic Hydrocarbons — linked to cancer Polybrominated dibenzodioxins and furans — toxic to endocrine system Perfluorinated chemicals — linked to cancer,... Read More»

With rudimentary laboratories, one could argue that more was accomplished with regards to the effect of diet on cancer in the former half of the century, as revolutionary researchers like Tannenbaum, Rous, and their colleagues provided us with dozens of animal studies linking diet and cancer by exposing mice to free radical - laden vegetable oils.32, 33 Several decades later, two other researchers, Dayton and Pearce, provided one of the few studies revealing what happens when we give humans vegetable oils and their accompanying free radicals when they randomized men to a corn oil solution and a similar rise in cancer followed.34 It is no surprise that corn oil is often used in animal studies to cause cancer, as the ingestion of damaging free radicals predictably hastens cancer development.35 Furthermore, these scientists were the first to show that fasting, restricting calories, and cutting carbohydrates could lower the chance of cancer in animals exposed to dangerous chemicals and carcinogens.

First, dietary phosphorus can influence the production of bone by helping with phosphorylation — a chemical process by which phosphorus is linked to an amino acid — of signaling proteins that stimulate bone growth.

Perceived by skin to be complex chemical components and can be linked to the breakdown of collagen.

Two former bases just north of Philadelphia have become the first Navy sites linked to drinking water tainted by these chemicals.

Looking for a scapegoat will only allow companies like Purina, that happened to have allowed Chinese ingredients to kill thousands of animals years ago, to go succeed at selling subpar, cheap ingredient food again, while running truly holistic companies that have forced meat by - product, corn and artificial chemicals, actually linked to diseases, out of more brands, thus ensuring a return to the marketing of lower quality foods seen just 10 years ago.

According to a report published by the National Resources Defense Council (NRDC) last November, a variety of flea and tick pesticides contain chemicals called «organophosphate insecticides,» or OPs, which have been linked to brain damage, harm to the human endocrine system, and certain kinds of cancer.

Substandard brands contain dyes, allergens, artificial preservatives, indigestible grains, as well as chemicals linked to cancer and other health problems, and meat by - products instead of pure animal proteins.

That act, to be followed by several hundred thousand similar scoops between now and 2015 if all goes as planned, ended a decadeslong struggle (nice timeline at this link) over what to do with the long - lived chemical compounds.

These cancers are linked to water polluted by chemicals and sewage, along with other environmental contaminants.

But it's also the by - product of fossil fuel combustion, and when a refinery or power plant reduces its greenhouse gas emissions (by becoming more energy - efficient, for example), it also releases fewer smog - forming chemicals like nitrogen oxides, less of the sulfur dioxide and soot that can irritate lungs and cause respiratory disease, and fewer toxic emissions linked to cancer and neurological disorders.

Here's a link to the FAQ at the film's website and here's a link to a long list of «Chemical Constituents in Additives / Chemicals» used in fracturing identified by the state of New York.

Sanderfoot says scientists must design studies that not only assess how birds are affected by air pollution, but what concentrations of specific chemicals are linked to those responses.

However, the reanalysis of inconvenient results by obtaining the raw data is a known tool in the arsenal of vested interests: Michaels (2008) shows how epidemiological data have been subjected to industry - sponsored re-analysis because of their regulatory implications, such as the link between tobacco and lung cancer or the link between bladder cancer and chemicals used in dye production.

Many of the species occupying critical links low in our food chains are being exposed via multiple pathways and by cocktails of chemicals acting together.

Abstract The major biogeochemical cycles which keep the present - day Earth habitable are linked by a network of feedbacks which has led to a broadly stable chemical composition of the oceans and atmosphere...

The NAS study deals a blow to one central safety argument made by opponents of the $ 5.3 billion Keystone XL link — that the heavier chemical components of so - called diluted bitumen make it more dangerous to ship — but made no attempt to address critics» second and more prominent concern, that a leak of oil sands crude would pose unique challenges during cleanup as well as unique risks to marine environments.

In 2002, three - quarters of the 72 products tested by the Environmental Working Group contained phthalates, plasticizer chemicals linked to birth defects, feminization of infant boys, liver and kidney damage, and infertility.

According to a new report released by the Environmental Working Group (EWG), commissioned by the Campaign for Safe Cosmetics, seventeen name brand perfume products were found to contain a «complex cocktail of natural essences and synthetic chemicals - often petrochemicals,» including diethyl phthalate, a chemical linked to sperm damage in adult men and abnormal development of reproductive organs in baby boys.