Sentences with phrase «at low concentrations»
At low concentrations of antibiotics, the mother cells grow faster than daughter cells.
sciencedaily.com
It's basically the same thing as smoking it yourself, just at a lower concentration.
Although arsenic is an element that naturally occurs in soils and groundwater, it is usually present at lower concentrations.
These circuits ensure that salt is appealing to humans at low concentrations, but not at high concentrations.
These chemicals are found in the blood of healthy people at low concentrations, but in larger amounts can be a sign of cancer.
Humans have long had a knack for concentrating heavy metals that would otherwise remain at low concentrations within the environment.
The water layer forms slowly at low concentrations, but once in place, it prepares the stage for carbon dioxide to transform quickly.
It is particularly useful for its ability to bind water at low concentration and form a web - like gel.
Dogs require vitamins in their food at low concentrations.
At low concentrations of the metal, individual platinum atoms showed up as bright spots scattered across the dark surface.
They are also found at low concentrations in some special - purpose skin creams and antidandruff shampoos that contain coal tars.
The invitro cytotoxicity results shows that the developed contrasts are not toxic at the lower concentrations.
The team also found that increasing amounts of NMP corresponded to increased larval mortality, even at the lowest concentration tested.
This synergy allows the drugs to be used at lower concentrations, thereby reducing toxicity, and could «increase the chances that only the virus is reactivated,» Verdin says.
The airborne contamination doesn't much change the existing amount on the ground (it goes up and then comes back down) but, as previously noted, it might disperse over greater distances, albeit at lower concentrations because of dilution.]
«This is the beginning of evidence that some microbes in the Gulf may be preconditioned to survive with oil, at least at lower concentrations,» said Ajit Subramaniam, an oceanographer at Columbia University's Lamont - Doherty Earth Observatory and coauthor of the study.
Moreover, annexin V / propidium iodide staining showed that VPA only marginally decreased the viability of in vitro — differentiated Th1 and Th17 cells at a relatively high concentration (1 mM)(Supplemental Fig. 4A, 4B), whereas VPA readily inhibited the differentiation of Th1 and Th17 cells at a low concentration (0.2 — 0.5 mM), indicating that apoptosis induction was not the primary mechanism for Th1 and Th17 cell differentiation inhibition (28, 29).
It's also a soluble fiber, has high viscosity at low concentration, and is non-GMO, gluten free, vegan, and certified Kosher and Halal.
Mint appeared in the mom's milk at lower concentrations but peaked much later, at six hours after ingestion.
In fact, humans detected certain scents at lower concentrations than the notoriously top - notch nostrils of mice and pigs.
Lead has been studied and regulated for many decades, leading to a large amount of evidence that it reduces children's IQs at low concentrations and contributes to attention disorders and even violent behaviors.
Additionally, OFS soaps were shown to form soap particles (called micelles) necessary for cleaning applications at low concentrations, which significantly reduces the environmental impact on rivers and lakes.
«One compound (LJ001) looked really good, it had an IC50 of one micromolar [meaning that it inhibited the pathogen at a low concentration], which for an initial read is okay.
Negative health effects have been noted at lower concentrations than the EPA advisory limit in extensive studies of PFOA exposure.
«We anticipate that this work will bring simple nanofluid flooding at low concentration to the stage of oilfield practice, which could result in oil being recovered in a more environmentally friendly and cost - effective manner.»
Nor did the EPA show the best understanding of toxicology in urging BP in a directive to use dispersants with a «toxicity value less than» a certain cutoff: in toxicology, a chemical that produces harm at low concentrations, say, five parts per million, is more deadly than those that kill at 10 parts per million.
Already at low concentrations, the two substances inhibit the division and mobility of the cancer cells.
The researchers fed three groups of mice high fat diets, giving one group the protein digest — sweet potato peptide (SPP)-- at a high concentration and one group at a lower concentration.
«There can be different combinations of materials that can be used in these two layers that can lead to higher efficiencies at lower concentrations,» Ghasemi says.
Using hollow - core optical fibre as a sensitive gas cell, researchers in Japan have devised a relatively simple and affordable sensor for monitoring biomarkers in human breath at low concentrations.
Because alpha - pinene exists in the gas phase only at low concentrations, requiring highly sensitive experimental techniques, no one had previously identified its gas - phase structure.
C?lin Guet explains how biased partitioning may be one step on the road to antibiotic resistance: «Recent research by other groups has shown that mutations that cause antibiotic resistance can emerge quickly at low concentrations of antibiotics.
«In this case, we clearly see these phytoplankton are not negatively affected at low concentrations of oil, and there is an accompanying process that helps them thrive.
Current systems for dealing with such dilute contaminants include membrane filtration, which is expensive and has limited effectiveness at low concentrations, and electrodialysis and capacitive deionization, which often require high voltages that tend to produce side reactions, Su says.
Since the precursor formation speed is related to the hard - sphere concentration, one finds crystallization at low concentrations of hard spheres.
«This transition demonstrates that shear thickening is driven primarily by frictional contacts, with hydrodynamic forces playing a supporting role at lower concentrations of particles, when mixtures are less dense,» Royer explained.
In this study, Bode has showed that oxazetidine - containing peptides react with α - ketoacids to undergo KAHA ligation at lower concentrations and at milder temperatures to produce proteins that contain native serine residues.
Researchers discover that a combination of pesticides at low concentrations can detrimentally affect human mesenchymal stem cells
«Although these articles concentrate on the US regulatory landscape, they offer an important message that is relevant worldwide: as our understanding of the harmful effects of a combination of chemicals at low concentrations and throughout the human lifespan increases, scientists must re-examine long - held beliefs regarding the relationship between exposure and effect, and ensure that policy makers understand the significance of these findings.»
In response, the cells underwent changes indicative of senescence, ceasing cell division and churning out key SASP factors.7 Notably, astrocytes were much more vulnerable to paraquat than skin cells: astrocytes went senescent at a lower concentration of the toxin than was required for skin cells, and the doses that turned skin cells senescent killed astrocytes outright.7
Many of these toxins, such as botulinum neurotoxin and ricin, act at low concentrations and require highly sensitive assays for detection.
Nutraceuticals as Carnitine, Betaine, Conglutin and Resveratrol tested at low concentrations comparable to those administered to humans, showed promising results attested with published works.