Sentences with phrase «on polar cell»

Not exact matches

In the new study, Sunney Xie of Peking University and Harvard University teamed up with Qiao and Fuchou Tang of Peking University to develop a method for sequencing the entire genomes of polar bodies — cells that arise as a byproduct of egg cell division and often die later on.

For example, in Earth atmospheric circulation (such as Hadley cells) transport heat between the warmer equatorial regions to the cool polar regions and this circulation pattern not only determines the temperature distribution, but also sets which regions on Earth are dry or rainy and how clouds form over the planet.

Previous studies had suggested, mainly based on mtDNA results [using DNA from the mitochondria within cells], that polar bears should be an example of unusually rapid adaptation to arctic conditions.

The sheer volume of energy that the Hadley cell transports, and the depth of the heat sink that is the polar cell, ensures that the effects of transient weather phenomena are not only have negligible effect on the system as a whole, but — except under unusual circumstances — do not form.

An article such as «Evolutionary roots of iodine and thyroid hormones in cell signaling» does not fit that bill, to name just one example of Crockford's scientific articles that has been pointed out as evidence of her having published on polar bear ecology.

The net effect is to control the size and intensity of the polar high pressure cells with the effect on climate that I have described.

But there would be a constant interplay between the two with the point of disjunction rising and falling cyclically with a consequent effect on the polar high pressure cells.

My NCM is not dependent on the solar aspect as long as an alternative mechanism can be proposed for the variability of the polar high pressure cells over multidecadal time periods.

During the late 20th Century the El Ninos has a greater effect on the jet positioning than they do now and the only variable to have changed is the level of solar activity which appears to have coincided with a slight warming of the stratosphere (previously cooling) and an intensification of the inversion at the tropopause which then redirects more energy back downward in the polar high pressure cells.

However the state of the stratosphere dictates how much is pumped back downward in the polar high pressure cells and how much is released to space and the state of the stratosphere (calm down Leif) appears to depend on how active is the solar surface at the time.

That is important because it would have some bearing on the size and intensities of the polar high pressure cells by altering the strength of the temperature inversion at the tropopause.