Sentences with phrase «as a function of temperature at»

They also considered the rate of decomposition of soil carbon as a function of the temperature at the freeze - thaw boundary, which sinks deeper and deeper as the soil's temperature rises.

Not exact matches

«Most of the other studies created single - molecule devices that functioned as single - electron transistors at four degrees Kelvin, but for any real - world application, these devices need to work at room temperature.

This is particularly interesting for users who want to map out an excitation as a function of temperature or magnetic field — frequent applications at FLEXX.

During the study of a number of aardvarks by researchers of the Brain Function Research Group at the University of the Witwatersrand, all but one of the study animals — as well as other aardvarks in the area — died because of a severe drought, with air temperatures much higher than normal and very dry soil in the area.

In the familiar heat engine model at macroscopic scale, referred to as the Carnot heat engine, the efficiency increases as a function of the ratio between the temperatures of the low - and high - temperature baths.

«By chemically modifying the nanotube surface to controllably introduce light - emitting defects, we have developed carbon nanotubes as a single photon source, working toward implementing defect - state quantum emitters operating at room temperature and demonstrating their function in technologically useful wavelengths,» said Stephen Doorn, leader of the project at Los Alamos and a member of the Center for Integrated Nanotechnologies (CINT).

The results show that the gap around the node at sufficiently low temperatures can be well described by a monotonic d - wave gap function for both samples and the... ▽ More The energy gap of optimally doped Bi2 (Sr, R) 2CuOy (R = La and Eu) was probed by angle resolved photoemission spectroscopy (ARPES) using a vacuum ultraviolet laser (photon energy 6.994 eV) or He I resonance line (21.218 eV) as photon source.

When we consume a lot of liquid unsaturated oils, our cell membranes do not have structural integrity to function properly, they become too «floppy,» and when we consume a lot of trans fat, which is not as soft as saturated fats at body temperature, our cell membranes become too «stiff.»

Year 4 Science Assessments Objectives covered: Recognise that living things can be grouped in a variety of ways Explore and use classification keys to help group, identify and name a variety of living things in their local and wider environment Recognise that environments can change and that this can sometimes pose dangers to living things Describe the simple functions of the basic parts of the digestive system in humans Identify the different types of teeth in humans and their simple functions Construct and interpret a variety of food chains, identifying producers, predators and prey Compare and group materials together, according to whether they are solids, liquids or gases Observe that some materials change state when they are heated or cooled, and measure or research the temperature at which this happens in degrees Celsius (°C) Identify the part played by evaporation and condensation in the water cycle and associate the rate of evaporation with temperature Identify how sounds are made, associating some of them with something vibrating Recognise that vibrations from sounds travel through a medium to the ear Find patterns between the pitch of a sound and features of the object that produced it Find patterns between the volume of a sound and the strength of the vibrations that produced it Recognise that sounds get fainter as the distance from the sound source increases Identify common appliances that run on electricity Construct a simple series electrical circuit, identifying and naming its basic parts, including cells, wires, bulbs, switches and buzzers Identify whether or not a lamp will light in a simple series circuit, based on whether or not the lamp is part of a complete loop with a battery Recognise that a switch opens and closes a circuit and associate this with whether or not a lamp lights in a simple series circuit Recognise some common conductors and insulators, and associate metals with being good conductors

The development team behind the mild hybrid powertrain selected lead - carbon batteries over lithium - ion equivalents as they require no active cooling, are more easily recyclable at the end of the vehicle's life and can function much more efficiently in sub-zero temperatures.

Another thing that I really like and probably most of you will as well is the liquid cooling system which isn't only incredibly effective at keeping all that hardware within functioning temperatures, but it's also very quiet.

The evolution of temperature as a function of latitude and the timing of CO2 rise are shown below (at two different time periods in part a, see the caption).

Scattering may also drive the distribution over polarizations toward an equilibrium (which would be, at any given frequency and direction, constant over polarizations so long as the real component of the index of refraction is independent of polarization) Interactions wherein photons are scattered by matter with some exchange of energy will eventually redistribute photons toward a Planck - function distribution — a blackbody spectrum — characteristic of some temperature, and because the exchange involves some other type of matter, the photon gas temperature (brightness temperature) will approach the temperature of the material it is interacting with -LRB-?

Trends as a function of CSD, Saturation: If the temperature varies monotonically over the distance from which most of the radiation reaching that level is emitted, then increasing the CSD will bring the upward and downward fluxes and intensities (at a given angle) toward the same value, reducing the net intensities and fluxes, until eventually they approach zero (or a nonzero saturation value at TOA).

In a linear approximation (that the blackbody spectral flux as a function of local temperature changes linearly over optical thickness going down from TOA, down to a sufficient optical depth), a doubling of CO2 will bring the depth of the valley halfway towards half of the OLR (the OLR at 15 microns will decrease by 25 % per doubling — remember this is before the temperature responds).

Including emission along a path (Schwarzchild's equation), a flux will approach saturation as the optical thickness becomes large over scales where the temperature variation is small; at smaller optical thicknesses, the temperature distribution may vary and larger temperature variations make the nonlinearity of the Planck function important, but over short distances, the temperature variation can be approximated as linear and the associated Planck function values can be approximated as linearly proportional to distance for small temperature changes, so the flux will approach an asymptotic value as a hyperbolic function (the difference between the flux and the saturation value of the flux will be proportional to 1 / optical thickness per unit distance (assuming isotropic optical properties (or even somewhat anisotropic properties), it will have that proportionality for all directions and thus for the whole flux across an area).

First off, an idealised «black body» (which gives of radiation in a very uniform and predictable way as a function of temperature — encapsulated in the Stefan - Boltzmann equation) has a basic sensitivity (at Earth's radiating temperature) of about 0.27 °C / (W / m2).

Unless and until we have reliable models that can accurately predict what the rainfall and temperature will be at the local or regional level as a function of specific CO2 levels the models are not of value to policy makers.

In order to really determine if higher levels of atmospheric CO2 are going to be a net problem for humanity we need to understand the impact on both temperature and rainfall at a regional or local level as a function of CO2.

There also need to be empirical checks at every level, real ownership of predictions, real acknowledgement of failures like the Hansen 1988 predictions of temperatures as a function of policy.

They simply look at its temperature as a function of depth.

Note that some authors have different definitions for the dissipation function, such as T with T the local temperature field, or T0 with T0 the temperature of the environment or the temperature the system would acquire if it is in thermodynamic equilibrium with the environment The different usages of the word» dissipation function» sometimes causes confusion... yep at this case nobody have the right or wrong weather previsions good chance

We have plotted most likely peak temperatures as a function of four different cumulative emission metrics: year 1750 — 2500 (figure 3a), year 1750 to the time at which peak warming occurs (figure 3b), year 1750 — 2100 (figure 3c) and year 1750 — 2200 (figure 3d).

The corresponding working quasilinear wave equation for the barotropic azonal stream function Ψm ′ of the forced waves with m = 6, 7, and 8 (m waves) with nonzero right - hand side (forcing + eddy friction) yields (34) u˜ ∂ ∂ x (∂ 2Ψm ′ ∂ x2 + ∂ 2Ψm ′ ∂ y2) + β˜ ∂ Ψm ′ ∂ x = 2Ω sin ϕ cos2 ϕT˜u˜ ∂ Tm ′ ∂ x − 2Ω sin ϕcos2 ϕHκu˜ ∂ hor, m ∂ x − (kha2 + kzH2)(∂ 2Ψm ′ ∂ x2 + ∂ 2Ψm ′ ∂ y2), [S3] where x = aλ and y = a ln -LSB-(1 + sin ϕ) / cos ϕ] are the coordinates of the Mercator projection of Earth's sphere, with λ as the longitude, H is the characteristic value of the atmospheric density vertical scale, T˜ is a constant reference temperature at the EBL, Tm ′ is the m component of azonal temperature at this level, u˜ = u ¯ / cos ϕ, κ is the ratio of the zonally averaged module of the geostrophic wind at the top of the PBL to that at the EBL (53), hor, m is the m component of the large - scale orography height, and kh and kz are the horizontal and vertical eddy diffusion coefficients.

Even though I can't imagine gravity functioning as a Maxwell Demon, even though Caballero in section 2.17 both states and leaves as a student exercise the proof that the thermodynamic equilibrium state of a vertical column of gas is isothermal, there has been a lot of confusion and strange assertions about a gas arriving at a state because of bulk transport that sorts out temperature differences approximately adiabatically (neglecting conduction), but that is somehow thermodynamically stable without transport and with conduction in the end.

Although, they are at temperatures of roughly 4,000 — 4,500 K, the contrast with the surrounding material at about 5,800 K leaves them clearly visible as dark spots, as the intensity of a heated black body (closely approximated by the photosphere) is a function of T (temperature) to the fourth power.

The temperature at a given location is defined as a function of a deterministic process and a random process and an error.

Just as the derivative f» (x) and second derivative f» (x) < / i) can tell you what's happening with the principal function f (x) so too we can learn from plots of the gradient of the temperature and the trend of that gradient as shown in the yellow line in the plot at the foot of my Home page at http://climate-change-theory.com

«in an isotropic non GHG world, the net would be zero, as the mean conduction flux would equalize, but in our earth it is still nearly zero» if the atmosphere were isothermal at the same temperature as the surface then exactly the downwelling radiation absorbed by the surface would be equal to the radiation of th surface absorbed by the air (or rather by its trace gases) and both numbers would be (1 - 2E3 (t (nu)-RRB--RRB- pi B (nu, T) where t (nu) is the optical thickness, B the Planck function, nu the optical frequency and T the temperature; as the flow from the air absorbed by the surface is equal to the flow from the surface absorbed by the air, the radiative heat transfer is zero between surface and air.

Figure 15 - A has shown the global pacing by the El Niños (and their tele - connections) of the temperature changes of the lower troposphere as function of both time and latitude; this pacing may be due to the coming to the surface, at high latitudes, of warm water from the Pacific warm pool, as they move to higher latitudes on the western rim of the oceans after an El Niño.

Basically, TCR depends on how the temperature responds to the strength of feedbacks (a determinant of climate sensitivity) and the rate at which this occurs as a function of ocean heat uptake.

Note that Alley said at the outset of that 2009 AGU presentation on how CO2 functions as the thermostat part of the globe's temperature control system ``..

Figure 2 «(b) ENSO - adjusted global mean temperature changes to 2008 as a function of starting year for HadCRUt3, GiSS dataset (Hansen et al. 2001) and the NCDC dataset» (Smith et al. 2008)-- but really nothing to do with any other type of variation at all.

Lab Technician II — TRL Plasma Laboratories — January 2013 — Present • Monitor the heat sealing and aseptic sampling of plasma units; place units of plasma into freezer in timely manner in order to ensure quality of product • Label plasma samples and units properly and store according to policy; manage an average of 50 different plasma units on a regular basis • Evaluate refrigerator and freezer temperatures ad inform supervisor if equipment is malfunctioning • Maintain efficient and clean work environment and ensure inventory is stocked properly; answer phones and answer questions or transfer calls to appropriate departmentLab Technician I — ABC Medical Technologies, Inc. — May 2007 — January 2013 • Operated laboratory equipment, such as cell counters and microscopes, to analyze urine, blood, and tissue samples; recorded both normal and abnormal findings; had less than a.1 percent margin of error in sample findings • Used computerized instruments and automated equipment to perform multiple tests at one time; maintained calibration and proper function of equipment on a regular basis • Entered data from tests into physician reports; discussed abnormal results with supervisor and re-ran tests before logging data into patient's medical record

It went something like this: hotel check - in, locate room, locate wifi service, attempt connection to wifi, wonder why the connection is taking so long, try again, locate phone, call front desk, get told «the internet is broken for a while», decide to hot - spot the mobile phone because some emails really needed to be sent, go «la la la» about the roaming costs, locate iron, wonder why iron temperature dial just spins around and around, swear as iron spews water instead of steam, find reading glasses, curse middle - aged need for reading glasses, realise iron temperature dial is indecipherably in Chinese, decide ironing front of shirt is good enough when wearing jacket, order room service lunch, start shower, realise can't read impossible small toiletry bottle labels, damply retrieve glasses from near iron and successfully avoid shampooing hair with body lotion, change (into slightly damp shirt), retrieve glasses from shower, start teleconference, eat lunch, remember to mute phone, meet colleague in lobby at 1 pm, continue teleconference, get in taxi, endure 75 stop - start minutes to a inconveniently located client, watch unread emails climb over 150, continue to ignore roaming costs, regret tuna panini lunch choice as taxi warmth, stop - start juddering, jet - lag, guilt about unread emails and traffic fumes combine in a very unpleasant way, stumble out of over-warm taxi and almost catch hypothermia while trying to locate a very small client office in a very large anonymous business park, almost hug client with relief when they appear to escort us the last 50 metres, surprisingly have very positive client meeting (i.e. didn't throw up in the meeting), almost catch hypothermia again waiting for taxi which despite having two functioning GPS devices can't locate us on a main road, understand why as within 30 seconds we are almost rendered unconscious by the in - car exhaust fumes, discover that the taxi ride back to the CBD is even slower and more juddering at peak hour (and no, that was not a carbon monoxide induced hallucination), rescheduled the second client from 5 pm to 5.30, to 6 pm and finally 6.30 pm, killed time by drafting this guest blog (possibly carbon monoxide induced), watch unread emails climb higher, exit taxi and inhale relatively fresher air from kamikaze motor scooters, enter office and grumpily work with client until 9 pm, decline client's gracious offer of expensive dinner, noting it is already midnight my time, observe client fail to correctly set office alarm and endure high decibel «warning, warning» sounds that are clearly designed to send security rushing... soon... any second now... develop new form of nausea and headache from piercing, screeching, sounds - like - a-wailing-baby-please-please-make-it-stop-alarm, note the client is relishing the extra (free) time with us and is still talking about work, admire the client's ability to focus under extreme aural pressure, decide the client may be a little too work focussed, realise that I probably am too given I have just finished work at 9 pm... but then remember the 200 unread emails in my inbox and decide I can resolve that incongruency later (in a quieter space), become sure that there are only two possibilities — there are no security staff or they are deaf — while my colleague frantically tries to call someone who knows what to do, conclude after three calls that no - one does, and then finally someone finally does and... it stops.