Sentences with phrase «latent phase of»

ACNM (2008), based on an in - depth review of literature on oral intake during labor, reported that American hospitals tend to limit oral intake during the latent phase of labor to clear liquids, and during the active phase to sips of water or ice chips.

On average too, the latent phase of the first stage of labour was shorter in women who consumed date fruit compared with the non-date fruit consumers (510 min vs 906 min, p = 0.044).

Not exact matches

A prolonged latent phase happens during the first stage of labor.

The first stage of labor has been historically divided into the latent phase and the active phase based on the work by Friedman in the 1950s and beyond.

On the basis of the 95th percentile threshold, historically, the latent phase has been defined as prolonged when it exceeds 20 hours in nulliparous women and 14 hours in multiparous women (18).

The topological electronic phase distinguished by the latent topology inside materials is the award - winning subject of the Nobel Prize in Physics 2016, research on which is now being actively conducted all over the world.

Prof. Aidan Doherty hopes this discovery will aid in the designing of new antibiotics that could help target mycobacteria, particularly during their latent phase.

This «latent heat,» the heat that is absorbed or released in a phase transition, is trapped in the bottom of the bubble because the orb's skin is too thin — about a hundredth of a millimeter — for heat to easily conduct.

This means that collections of molecules within these systems exist in either solid or liquid form with no in - between in the presence of latent heat, the energy that fuels a solid - to - fluid phase change.

If you have one of these then it will last in your body for lifetime, because this virus commonly goes into latent phase which is like a stage of hibernation where it hides in your cells.

This 18 - month, mixed - methods, exploratory study, conducted in partnership with the Consortium for Policy Research in Education, will have three phases: 1) Qualitative inquiry across K - 8 schools in Philadelphia; 2) Latent class analysis to identify «profiles» of school disciplinary approaches, coupled with event history analysis to examine student outcomes in context; 3) Case studies to examine contextual themes in depth.

Although cats with true latent infections are not considered infectious to other cats, the latent state is a fragile phase of infection.

The height redistribution in the atmosphere of condensation nuclei with a change of the electric field of the atmosphere is accompanied by a change in total latent heat (phase transition of water vapor), by changes in radiation balance, and by subsequent changes of the thermobaric field of troposphere.

(PS diffusion of matter and energy (latent heat) during such phase changes requires compositional and temperature gradients — entropy must then be produced, so there is a departure from actually being adiabatic — a smaller departure if pressure is being changed less rapidly (so that diffusions occur across smaller gradients).

The thermodynamics of water are simplified in that only the vapor - liquid phase transition is taken into account, and the latent heat of vaporization is taken to be constant, as in Frierson et al. (2006).

The specific latent heat is the amount of energy required to convert 1 kg (or 1 lb) of a substance from solid to liquid (or vice-versa) without a change in the temperature of the surroundings — all absorbed energy goes into the phase change — is known as the specific latent heat of fusion.

The uplift is energised when condensation occurs and the latent heat of the phase change is released.

The current confusion about the thermal behaviour of the Earth system is that no one seems to realise that the rate of conversion to and fro between the latent heat of phase changes and potential energy during adiabatic uplift and descent is variable with any forcing element other than mass, gravity or insolation.

Heat (not latent heat) is removed prior to condensation by conversion of kinetic energy to potential energy which then provokes condensation and when the phase change occurs the release of latent heat causes the air parcel to rise a little further with additional conversion of KE to PE until it reaches the correct lapse rate temperature for its height and then it stops rising and begins to descend.

Yes the phase changing material, can also give up energy in the form of EM radiation, but that radiation escapes without raising the Temperature of the material that is supplying the latent energy.

Whether one considers latent heat of phase changes or potential energy doesn't matter because neither are recorded as heat by sensors.

For higher stability, there's a stronger restoring force on any vertical displacement of air (assuming no latent heating occurs), which speeds up the motion associated with the wave causing the wave to propagate faster (i.e. faster phase speed).

These last equations are useful because they relate equilibrium or saturation vapor pressure and temperature to the latent heat of the phase change, without requiring specific volume data.

There is ZERO science that allows anything but H2O to retain heat in the system and only then through its properties of latent heat and phase, and only for short periods.

Regarding the period of 1976 - 2000, certainly we all know this period was dominated by El Nino's over La Nina, and as a warm phase PD, we were getting more sensible and latent heat flux from ocean to atmosphere.

I listed some phase changes important in building science and promised to come back and talk about latent heat, one of the most interesting concepts in heating and cooling, so here ya go.

(obviously, the effects would not necessarily be proportionate, because of the different latent heats involved in the two phase transitions.)

This process is difficult to study and build a model for because of the phase changes and complicating influence of latent heat being released.

To point out just a couple of things: — oceans warming slower (or cooling slower) than lands on long - time trends is absolutely normal, because water is more difficult both to warm or to cool (I mean, we require both a bigger heat flow and more time); at the contrary, I see as a non-sense theory (made by some serrist, but don't know who) that oceans are storing up heat, and that suddenly they will release such heat as a positive feedback: or the water warms than no heat can be considered ad «stored» (we have no phase change inside oceans, so no latent heat) or oceans begin to release heat but in the same time they have to cool (because they are losing heat); so, I don't feel strange that in last years land temperatures for some series (NCDC and GISS) can be heating up while oceans are slightly cooling, but I feel strange that they are heating up so much to reverse global trend from slightly negative / stable to slightly positive; but, in the end, all this is not an evidence that lands» warming is led by UHI (but, this effect, I would not exclude it from having a small part in temperature trends for some regional area, but just small); both because, as writtend, it is normal to have waters warming slower than lands, and because lands» temperatures are often measured in a not so precise way (despite they continue to give us a global uncertainity in TT values which is barely the instrumental's one)-- but, to point out, HadCRU and MSU of last years (I mean always 2002 - 2006) follow much better waters» temperatures trend; — metropolis and larger cities temperature trends actually show an increase in UHI effect, but I think the sites are few, and the covered area is very small worldwide, so the global effect is very poor (but it still can be sensible for regional effects); but I would not run out a small warming trend for airport measurements due mainly to three things: increasing jet planes traffic, enlarging airports (then more buildings and more asphalt — if you follow motor sports, or simply live in a town / city, you will know how easy they get very warmer than air during day, and how much it can slow night - time cooling) and overall having airports nearer to cities (if not becoming an area inside the city after some decade of hurban growth, e.g. Milan - Linate); — I found no point about UHI in towns and villages; you will tell me they are not large cities; but, in comparison with 20-40-60 years ago when they were «countryside», many small towns and villages have become part of larger hurban areas (at least in Europe and Asia) so examining just larger cities would not be enough in my opinion to get a full view of UHI effect (still remembering that it has a small global effect: we can say many matters are due to UHI instead of GW, maybe even that a small part of measured GW is due to UHI, and that GW measurements are not so precise to make us able to make good analisyses and predictions, but not that GW is due to UHI).

If I were a physicist I would know or be attempting to find out what from of energy transduction occurred when water gave up its latent heat during the phase transitions.

Pekka, at the moment the water cycle appears to consist of sensible heat causing the liquid to gas phase transition, water molecules rising, water condensing and releasing the latent heat as molecular collisions.

Latent heat losses are not easily detectable by a thermometer and are energy losses associated with a phase change of water.

However, as the water vapor rises the lapse rate means that the volume of air cools and eventually the water vapor condenses into water droplets and then into ice latent heat is given off to the surrounding air at each of these phase changes, with two effects.

Latent heat at phase change is interesting, but by my back of the envelop calculations it is small relative to albedo.

That is, unless you're ignoring «latent transport» and only tackling the «radiative» aspect of Miskolczi's paper (which, BTW, may throw up the hysteresis value for «phase changes of water vapour»).

Temperatures are buffered while the radiative flux soaks «into / out of» latent heat because, loosely speaking, the latency due to phase change alters the energy capacity for the region.

Heat can be stored as latent heat / potential energy and the most commonly occurring substance on earth that can absorb, hold and release large quantities of latent heat / potential energy via phase transitions initiated by a range of naturally occurring thermodynamic processes is water.