Sentences with phrase «effects in laboratory»

Manufacturers began to substitute this compound for a chemical cousin — bisphenol A, or BPA — when research showed BPA mimicked the hormone estrogen and could provoke a number of adverse effects in laboratory animals.

Using advanced molecular screening tools, our scientists identify the specific gene modifications that produce the desired effects in laboratory plants.

Since baclofen and similar medications reduce these effects in laboratory animals, we wanted to examine whether it could prevent drug - cue induced activation in the human brain.»

And there are no obvious side effects in laboratory animals; the rats suffered no harm to their memory or their ability to learn.

The team also compared the animals» responses to the therapy's effects in laboratory cell samples and found that in vitro studies did not predict how well the viral therapy and immune response would fight tumor cells in vivo.

As of now, the E.P.A. has said PFOA is known to cause developmental and other adverse effects in laboratory animals, but the agency has yet to determine if the chemical poses an unreasonable risk to the public.

The researchers tested the extract's effect in the laboratory on infection - causing strains of certain bacteria, including E. coli and Proteus mirabilis (a common cause of urinary tract infection).

Yes, increased CO2 has an effect in the laboratory; yes, radiative transfer; etc, yes, yes, yes.

The researchers tested the extract's effect in the laboratory on infection - causing strains of certain bacteria, including E. coli and Proteus mirabilis (a common cause of urinary tract infection).

Montoya et al. (2008) found that actual similarity had a strong effect in laboratory studies that involved no interaction (bogus stranger paradigm), a moderate effect when there was a brief interaction in previously unacquainted pairs, but no effect in existing relationships.

Not exact matches

«That's a huge effect size in laboratory literature,» Low commented.

In many dark energy models, we would expect to see significant effects on both laboratory and cosmological scales.

If that sort of situation developed from such an apparently unambiguous procedure as the deployment of pesticides, what potential disaster may be lurking in the laboratories of those who are creating new organisms whose pathogenic effects can not possibly be predicted with accuracy?

The effect of these mechanisms was also apparent in the laboratory studies of Rockenstein and Klos.

Rockenstein in 1966 and Klos in 1978 studied the effects of selected Christian children's programs on informational and attitudinal tests administered to selected groups of children in controlled laboratory situations before and after viewing.

And Avent isn't aware of «independent laboratory studies that have measured the effect of BPA in animals,» even though the information is a Google search away.

Independent studies have conclusively shown adverse health effects of BPA on the brain and reproductive system, as well as metabolic diseases in laboratory animals.

To create the effect of tobacco smoke on cells, Vaz, Baylin and their colleagues began their studies with human bronchial cells, which line the airways of the lungs, and grew them in a laboratory.

First, the effects they saw have so far only been replicated in cells growing in a laboratory dish, using high concentrations of AA147.

The result is a repulsive effect, which was used by Yuanming Liu and colleagues at the Jet Propulsion Laboratory in Pasadena, California, to lift a young mouse weighing 10 grams.

This is more than theory: In the late 1940s, physicist Willis Lamb detected the effect of virtual particles on hydrogen atoms in his Columbia University laboratorIn the late 1940s, physicist Willis Lamb detected the effect of virtual particles on hydrogen atoms in his Columbia University laboratorin his Columbia University laboratory.

CDC: The typical academic laboratory employs «agents» with a wide range of expertise and experience, from the unmotivated undergraduate student who understands little about the work, to the experienced technician who is, in effect, the lab's Chief Operations Officer, to the advanced postdoc who may know more about the work than the «principal» and will be running her own laboratory in a year or two.

«We have predicted both effects some years ago by our three - dimensional (3D) simulations of neutrino - driven supernova explosions,» says Annop Wongwathanarat, researcher at the RIKEN Astrophysical Big Bang Laboratory and lead author of the corresponding publication of 2013, at which time he worked at MPA in collaboration with his co-authors H. - Thomas Janka and Ewald Müller.

«Previous studies of the impacts of drought on flowers and bees have looked at individual species, often in the laboratory, but we used an experiment with rain shelters to examine the effects on real communities of plant species living in chalk grassland,» said Dr Ellen Fry from the University of Manchester, who set up the experiment.

She then did a joint Ph.D., at La Sapienza University and the European Laboratory for Non-Linear Spectroscopy (LENS) in Florence, using optical techniques to investigate quantum effects in semiconductor nanostructures.

With each step in his laboratory experiments, the challenges got harder and more complicated, but because of the rooks» understanding of cause and effect, they produced solutions without resorting to trial and error.

It can be very difficult to replicate the long - term effects of climate change over very large geographic areas in the laboratory or field.

«It is telling us that the pesticides most prevalent in the human population have effects on the androgen receptor,» said Zoeller, who directs the university's Laboratory of Molecular, Cellular and Developmental Endocrinology.

Frank Gilliland, an environmental epidemiologist at the University of Southern California in Los Angeles, became intrigued when laboratory studies suggested that certain pollutants in the environment might function as «obesogens,» contributing to weight gain by mimicking or disrupting the action of hormones, or having other effects.

For the past two years, Winget and his colleagues at the University of Texas at Austin and Sandia National Laboratory in Albuquerque, New Mexico, have been creating searing plasmas that are, in effect, miniature versions of white dwarfs, ancient stars that have burned up all their nuclear fuel.

We have shown in the laboratory that the proteins that these inhibitors target actually interact, so the effects of these inhibitors are enhanced through this interaction.

«The problem is that most of the plant - tolerance models we currently use to predict these outcomes are based on laboratory studies or plant physiological studies, so they often don't factor in the compounding effects of simultaneous stressors like drought and pressure from natural enemies.

Previous studies have largely focused on whether there will be any negative effects, and ignored any positive effects, says Joe Small of the National Nuclear Laboratory in Warrington, UK, another researcher in the consortium.

In effect, a government laboratory which won a grant could end up subsidising the research.

Don Korycansky's current work at the University of California at Santa Cruz confirms the discovery of the Van Dorn effect in the 1960s under the auspices of the U.S. Naval Research Laboratory.

Hudson pauses for effect, stretching back in his seat and propping his feet on an open file drawer in a crowded corner of his microbiology laboratory at Wayne State Medical School in Detroit.

«We found — counterintuitively — that blocking this immune response against the virus had beneficial effects in lowering the amounts of virus and increasing the ability of the immune response to clear out the virus,» said Kitchen, who is also director of the UCLA Humanized Mouse Core Laboratory.

The feather friends at the Cornell Laboratory of Ornithology contend on their Web site that «a study in 2003 found few actual effects on populations of 27 native species.

This study is the first to explore the effects of trauma - induced and stress - induced imagery on alcohol craving, affect, and cardiovascular and cortisol responses in a laboratory setting.

Franco believes that the new European legislation — which would require systematic evaluation of all research involving laboratory animals in all E.U. countries, with ethical considerations a big part of the assessment — makes now a good time «to assess what [researchers] think about using animals, what effect training can have not only about their knowledge of the three R's but also how it affects their attitudes.»

A few years ago, the sudden rise in anecdotal reports of these drugs» dangerous effects prompted Taffe and his TSRI colleague, chemist Associate Professor Tobin J. Dickerson, to set up studies with laboratory animals.

This «chiral magnetic effect» had long been predicted theoretically, but never observed definitively in a materials science laboratory at the time this work was done.

Lead scientist Jeffrey Hawkes, currently a postdoctoral fellow at Uppsala University in Sweden, directed an experiment in which the researchers heated water in a laboratory to 380 degrees Celsius (716 degrees Fahrenheit) in a scientific pressure cooker to mimic the effect of ocean water passing through hydrothermal vents.

The concentrations are lethal to a small, shrimp - like crustacean called Hyalella azteca - a species commonly used in laboratories to investigate the effects of pesticides on invertebrates necessary for healthy rivers.

In five other studies published over the past year, Taffe, Dickerson and their laboratories have looked at the effects of MDPV and a related «bath salts» cathinone derivative, mephedrone, in a range of animal modelIn five other studies published over the past year, Taffe, Dickerson and their laboratories have looked at the effects of MDPV and a related «bath salts» cathinone derivative, mephedrone, in a range of animal modelin a range of animal models.

Now, a team led by physicist Yimei Zhu at the U.S. Department of Energy's Brookhaven National Laboratory has produced definitive evidence that the movement of electrons has a direct effect on atomic arrangements, driving deformations in a material's 3D crystalline lattice in ways that can drastically alter the flow of current.

Researchers at the Scripps Institution of Oceanography in San Diego, California, suggest that high levels of carbon monoxide in the seals» blood has a protective effect — echoing laboratory research on rats and mice that has found the gas has anti-inflammatory properties and can lead to better outcomes after organ transplant.

To determine the effect of these changes, Henrik Sperber, a graduate student in the Ruohola - Baker laboratory, used a technique called mass spectroscopy to compare levels within cells of the metabolites.

By now, European astronauts had hoped to be established in their space laboratory called Columbus, where they would be melting and solidifying conductive metals, studying microgravity effects on single - celled organisms, investigating human balance disorders, and carrying out dozens of other experiments.

This is not only because tests on laboratory animals can cause much suffering, but also because the relevance of the data they provide for predicting effects in humans or other animals is severely limited by differences among major species.