Sentences with phrase «however at higher concentrations»

Not exact matches

However, readings have regularly exceeded 500 micrograms since mid-December, with fireworks to help celebrate the Chinese new year driving PM2.5 concentrations to their second highest level in five years at the end of January.

At even higher formaldehyde concentrations of 3.0 milligrams per cubic meter, however, the researchers observed an unexpected decrease in cilia beating frequency, possibly due to irreversible cell damage caused by the formaldehyde.

To maintain the solubility constant, which, however, slightly differs for the phases precipitated in different pH ranges, the solubility concentration of calcium ions is specifically lower at higher concentrations of carbonate (higher pH).

Antibiotics can be categorized based on whether they directly kill bacteria (bactericidal) or slow growth / prevent cell division (bacteriostatic); however, the distinction between the two categories may be a bit of a gray area as some bacteriostatic reagents can kill bacteria when used at high concentrations (and vice versa).

* Oddly enough, however, the experiments with fresh pancreatic islets and fat cells taken from the mice suggested that the positive effects of uncarboxylated osteocalcin on insulin only occurred at concentrations extremely low compared to those of undercarboxylated osteocalcin normally present in mice, while the effects on adiponectin and energy expenditure only occurred at normal to high concentrations.

If you really want to buy a condo, and you plan on living in the unit for at least five years, you may be alright buying in the areas with a higher concentration of foreign owners, however, you may want to consider other areas with a smaller percentage of investor - owned condos.

However, many carbon sinks (e.g. the ocean) become less effective at absorbing carbon dioxide at higher concentrations of dissolved CO2.

However, even if per capita fossil fuel based energy were to increase by 50 % by 2100, the overall CO2 concentration would still not grow at a higher rate than 0.5 % we now see, due to the slowdown in population growth rate.

All coastal engineering communities support intense metabolic processes, including high primary production, respiration and calcification rates, thereby affecting CO2, CO3 −, and alkalinity concentrations and surface water pH. However, many metabolically intense coastal habitats are experiencing global declines in their abundance at rates in excess of 1 % per year (Duarte et al. 2008; Ermgassen et al. 2013).

However, both sediment records of atmospheric deposition of Hg2 + species at high northern latitudes and atmospheric GEM concentrations inferred from Greenland firn air support the conclusion that transfer of anthropogenic inorganic mercury through the atmosphere to terrestrial and marine reservoirs occurs on a large scale.

However, note that past CO2 concentrations have never been as high as they are at present (currently above 360 ppm), which changes the basic conditions under which our climate operates and makes it difficult to base future predictions on past behavior.»