Sentences with phrase «describe phase transitions»

Using a mathematical model known as the Ising model, invented to describe phase transitions in statistical physics, such as how a substance changes from liquid to gas, the Johns Hopkins researchers calculated the probability distribution of methylation along the genome in several different human cell types, including normal and cancerous colon, lung and liver cells, as well as brain, skin, blood and embryonic stem cells.

The edge of chaos describes a phase transition space between order and randomness.

Not exact matches

«In physical terms, this can be described as a phase transition.»

Accordingly, the team instead examined a model describing the behaviour of supercooled water, in which previous work showed a phase transition.

This type of material is of particular interest for the field of solid state physics: their electrons can not be described as separate from one another; they are strongly interconnected and it is precisely this that lends them extraordinary properties, from high - temperature superconductivity through to new kinds of phase transitions.

The theory work, described in a paper recently published as an Editor's Suggestion in Physical Review Letters (PRL), identifies key patterns that would be proof of the existence of a so - called «critical point» in the transition among different phases of nuclear matter.

They applied the trick to describe other out - of - equilibrium phase transitions, such as a dynamic Mott transition and a spin system, and saw the results agreed with either observed experiments or simulations.

He and co-author Alexey Galda, a scientist with Argonne and the University of Chicago's James Franck Institute, had been working on ways to describe these systems, particularly those undergoing a phase transition — such as the moment during a thunderstorm when the charge difference between cloud and ground tips too high, and a lightning strike occurs.

«New theoretical approach to describing non-equilibrium phase transitions.»

Two Argonne physicists offered a way to mathematically describe a particular physics phenomenon called a phase transition in a system out of equilibrium (that is, with energy moving through it) by using imaginary numbers.

This phase transition between a boring empty space and an expanding universe containing mass has now been mathematically described by a research team at the Vienna University of Technology, together with colleagues from Harvard, the MIT and Edinburgh.

(b) Develop defect phase diagrams to identify process space — this area can essentially describe the competition of different defects vs. temperature and oxygen partial pressure etc. (c) Model transition state pathways to understand mechanism concerns leading to ultimately an understanding of temperature kinetics relationships.

A disordered region of the Ddx4 protein forms membraneless organelles that separate single and double - stranded DNA, as described in her 2015 Molecular Cell paper titled «Phase Transition of a Disordered Nuage Protein Generates Environmentally Responsive Membraneless Organelles.

With respect to biomarkers, we believe our proteomic strategy [10], that did not require prior knowledge of which proteins might be present in the CSF, will accelerate the transition from a discovery phase of candidate biomarkers, as described in this study, to full validation for clinical application.

Correspondingly, the five phases that can be described between these positions are as follows: (1) the first pull happens between the ground and when the bar reaches knee level and is initiated by knee and hip extension; (2) the transition happens when the barbell is between knee level and the power position and involves a shift in the position of the body relative to the barbell, which involves a brief period of knee flexion and is therefore referred to as the double knee bend (Enoka, 1979; 1988); (3) the second pull is the most powerful phase of the lift and occurs while the barbell is between the power position and the lifter is in triple extension; (4) turnover occurs as the lifter quickly drops down under the bar from the triple extension position to the catch position, in a deep front squat; (5) recovery into the standing position occurs as the lifter stands from the catch position to upright.

Psychologists describe phases of grieving during which transitions between quite different states of mind can occur.

The transition from macroalgal (i.e. kelp forest) to denuded landscapes dominated by sea urchins (or «urchin barrens») is a widespread phenomenon, [6][33][34][35] often resulting from trophic cascades like those described above; the two phases are regarded as alternative stable states of the ecosystem.

In discussions of global change, the term tipping point has been used to describe a variety of phenomena, including the appearance of a positive feedback, reversible phase transitions, phase transitions with hysteresis effects, and bifurcations where the transition is smooth but the future path of the system depends on the noise at a critical point.