Sentences with phrase «occurs at low temperature»

Additionally, the whole process occurs at low temperature and low pressure, thereby requiring far less energy than other approaches.

Enzymes serve as a catalyst to speed - up reactions without being used up; a single enzyme can work a long time on a stain and reactions occur at a lower temperature.

They demonstrated that superconductivity could occur at low temperatures and also explained the mechanism, phase transition, that makes superconductivity disappear at higher temperatures.

Transmission of mosquito - borne diseases, such as Zika, occur at lower temperatures than previously thought, a recently released study co-authored by two University of South Florida researchers shows.

«Given that the predominant thinking was that transmission was most likely to peak at very hot temperatures, which would mostly limit the diseases to the tropics, we were certainly surprised that the model and the field data suggested that high rates of transmission could occur at lower temperatures, possibly impacting more northern regions in the future,» Cohen said.

I think if you read the papers I refer to in my article you'll find that reaching the smoke point is a different issue from oxidation, which can occur at lower temperatures.

This would be because it's occuring at low temperatures and the coefficient of expansion gets smaller as it approaches 0 deg C.

(Indirectly, I think it's possible that using radiation management to ameliorate warming might have some indirect effect, because ozone depletion occurs at low temperatures — that's why ozone holes develop in the winter at the poles — and rad / man would imply that we failed to address carbon emissions.

Not exact matches

A process which is becoming more ordered is exothermic and it occurs at a sufficiently low enough temperature., as in the case of a snowflake.

FOOD LOSS Postharvest food losses - occurring at the production, harvest, postharvest and processing phases - are the most important source of FLW in developing countries, due to poor infrastructure, poor temperature management, low levels of technology and low investment in the food production systems, especially the cold chain.

As solids digestion occurs two times faster at high temperature than low temperature, thermophilic digestion (50 — 55 °C) is usually preferred.

Here's the bottom line: Your basal body temperature will reach its lowest point at ovulation and then rise immediately about a half a degree as soon as ovulation occurs.

The outpost at the heart of the frozen continent holds the record for the lowest naturally occurring temperature ever observed on Earth.

The reaction occurs in a liquid phase and proceeds at relatively low temperatures (about 200 degrees Celsius), unlike the costly current methods of extracting hydrogen from glucose that use pressurized steam.

The maximum bulge typically occurred between 1 p.m. and 4 p.m., when temperatures were the highest for the day, and minimum bulge occurred between 7 a.m. and 9 a.m., when temperatures were generally at their lowest point of the day.

These reactions are also possible without platinum, but they can occur at much lower temperatures in the presence of platinum particles.

«What this discovery implies is that if you prevented the static stripes from ever occurring, you might end up with a material that could act as a superconductor at a lower density of doping — and a much higher temperature,» Davis said.

This means convection could easily occur, even at the extremely low temperatures of Pluto, which average more than 300 degrees Fahrenheit below zero.

«The maximum concentration of (invisible) water vapor which can occur in air decreases to extremely low values at very cold temperatures.

«That something happened to lower the nucleation barrier, allowing crystallization to occur at a higher temperature.

In low energy RHIC collisions, scientists suspect that while the change in phase from QGP to ordinary protons / neutrons occurs, both distinct states (QGP and ordinary nuclear matter) coexist — just like bubbles of steam and liquid water coexist at the same temperature in a pot of boiling water.

Allamandola's simulations, carried out first at Leiden and now at NASA's Ames Research Center, revealed not only that some chemical reactions really do occur at extremely low temperatures, but also that these reactions produce other reactive chemicals, thereby providing the spark for more molecular hookups.

Results illustrate the highest percentage of Asian carp eggs at risk of hatching occurs when the streamflow is low and when the water temperature is high.

The researchers also expect new phenomena to occur at such low temperatures involving, for example, how cold atoms interact with surfaces and how atoms move when they are confined to a narrow channel or layer.

Transmission of the parasite occurs at lower elevations where temperatures are warmer and drops off at higher altitudes.

If there's one area that often seems to catch the imagination of many who call themselves «climate skeptics», it's the idea that CO2 at its low levels of concentration in the atmosphere can't possibly cause the changes in temperature that have already occurred — and that are projected to occur in the future.

-LSB-...] Part One of the series started with this statement: If there's one area that often seems to catch the imagination of many who call themselves «climate skeptics», it's the idea that CO2 at its low levels of concentration in the atmosphere can't possibly cause the changes in temperature that have already occurred — and that are projected to occur in the future.

In simple terms, your basal body temperature is the temperature at which your body rests, which tends to be a bit lower than your «normal» temperature, usually 97 point something degrees F versus 98.6 degrees F. By taking your BBT each morning throughout your cycle you will be able to detect the natural rise in your basal body temperature that occurs just after ovulation.

Sensitivity to cold and lowered morning body temperatures are also red flags; Dekel said morning temperatures as low as 95.5 degrees Fahrenheit can occur in thyroid patients — a situation which limits function, as body enzymes work most effectively at 98.6 degrees.

When temperatures drop, phase separation occurs at a lower water concentration level.

Rainfall can occur at any time of year although in winter, eastern Germany, where temperatures are generally lower than in the west of the country, is more likely to experience snow.

It's not my obligation to provide a functional design; catalysts lower activation energies, and allow rains to occur at room temperature that would not otherwise.

Moreover, most of this flow probably occurs at some depth, where the temperature is close to zero, so its heat transport is also very low.

But the evidence shows this can't be true; temperature changes before CO2 in every record of any duration for any time period; CO2 variability does not correlate with temperature at any point in the last 600 million years; atmospheric CO2 levels are currently at the lowest level in that period; in the 20th century most warming occurred before 1940 when human production of CO2 was very small; human production of CO2 increased the most after 1940 but global temperatures declined to 1985; from 2000 global temperatures declined while CO2 levels increased; and any reduction in CO2 threatens plant life, oxygen production, and therefore all life on the planet.

However, due to the comparatively lower temperature of the warm water produced (40oC / 55oC dependant on system), they may need to be sized approximately 25 % larger to compensate for the lower temperature differential, thus allowing convection to occur at maximum efficiency.

And Stefan, something tells me I should not engange stefan again, but you know that evaporation occurs at a constant temperature, it removes heat but can proceed without lowering the temperature.

This indicates that much of the nation's warming is occurring at night, when temperatures are dipping less often to record lows.

Die - offs also occurred during the winter but not the summer.7 Researchers in Central and South America also found that populations that lived at higher and cooler elevations were extirpated, while populations of the same species living at lower and warmer elevations were still thriving.8, 9 Similarly in the United States, the extirpations were happening at higher elevations in Yosemite, and during the winter in Arizona when cooler temperatures prevailed.6

''... worked with two sediment cores they extracted from the seabed of the eastern Norwegian Sea, developing a 1000 - year proxy temperature record «based on measurements of δ18O in Neogloboquadrina pachyderma, a planktonic foraminifer that calcifies at relatively shallow depths within the Atlantic waters of the eastern Norwegian Sea during late summer,» which they compared with the temporal histories of various proxies of concomitant solar activity... This work revealed, as the seven scientists describe it, that «the lowest isotope values (highest temperatures) of the last millennium are seen ~ 1100 - 1300 A.D., during the Medieval Climate Anomaly, and again after ~ 1950 A.D.» In between these two warm intervals, of course, were the colder temperatures of the Little Ice Age, when oscillatory thermal minima occurred at the times of the Dalton, Maunder, Sporer and Wolf solar minima, such that the δ18O proxy record of near - surface water temperature was found to be «robustly and near - synchronously correlated with various proxies of solar variability spanning the last millennium,» with decade - to century - scale temperature variability of 1 to 2 °C magnitude.»

The pattern of warming that we have observed, in which warming has occurred in the lower portions of the atmosphere (the troposphere) and cooling has occurred at higher levels (the stratosphere), is consistent with how greenhouse gases work — and inconsistent with other factors that can affect the global temperature over many decades, like changes in the sun's energy.

(5) Rates of CET temperature change which covered time periods of at least twenty - five years, and which ranged from a low of -0.1 C per decade on up to a high of +0.4 C per decade, occurred at pre-industrial levels of CO2.

With a couple of years of low sea surface temperature at the equator (where the bulk of the evaporation occurs) specific humidity has fallen strongly.

However, it is much easier to figure out what happens when you add more radiative gases to an atmosphere that already has them: And, the answer is that it increases the IR opacity of the atmosphere, which increases the altitude of the effective radiating level and hence means the emission is occurring from a lower - temperature layer, leading to a reduction of emission that is eventually remedied by the atmosphere heating up so that radiative balance at the top - of - the - atmosphere is restored.

Thus, at relatively high wind velocities a convective cooling of the surface occurs when the temperature of the wind is lower than the temperature of the pavement surface.

«It means that it is the lowest temperature that is occurring at the end of the night.

In the case of the Earth that is where the atmospheric temperature is about -18 C which occurs at about 4.5 kilometres up from the surface but that is a low level and within the troposphere which is the lowest segment of the atmosphere.

Temperatures above 43 ° are rare where wind farms are built, and often occur on calm days when turbines are either not working or working at low capacity.

This occurs on individual days of very low diurnal temperature range, at individual locations, and affects less than 0.03 % of the records in the dataset.

These days of low diurnal temperature range occur naturally from time to time at individual locations.

Wavelength is directly proportional to temperature and 15um occurs at -80 C. CO2 can only emit IRR at the same 15um so radiates very low energy photons at -80 C.