Sentences with phrase «of mechanical force»

In proposals to develop APM, this problem will be solved by guided molecular trajectories and positionally - controlled mechanosynthesis: reactive molecular fragments will be guided by molecular machine systems to a specific position and geometric orientation with respect to the growing atomically precise work piece so that the application of mechanical force will cause the desired bond to form.

Being able to literally pull apart these triazoles into their constituent precursors and then unlock their chemical reactivity in new ways is now possible with the assistance of mechanical force,» he says.»

The pattern generates a small but potent amount of mechanical force that shows cells where to line up.

When Enlightenment thinkers decided that the whole of nature operates in terms of mechanical forces, they concluded that the apparent difference between organisms and mechanisms is only apparent.

Bioengineer David Kaplan at Tufts University's Department of Biomedical Engineering, who had no role in these findings, calls the work «fantastic» and adds future research might want the bioreactor to mimic the same range of mechanical forces this bone will see if implanted — for instance, for the jaw joint, «you'd want it to experience compression and torsion.»

And the impact of mechanical forces on development is being increasingly studied in a variety of organisms, Goentoro says.

«Symmetrization is a combination of the mechanical forces created by the muscle contractions and the viscoelastic jellyfish body material,» Abrams says.

These observations suggested the toe is twisted as a result of mechanical forces imposed on it by the embryonic musculature.

«The role of mechanical forces in the behaviour of biological cells has long been overlooked, but then has become a rapidly growing field of research over the last two decades now known as mechanobiology,» states Prof. Schwarz.

Because of the mechanical forces of movement and weight bearing, these matrix components are constantly being replenished in order to maintain strength and resilience.

Not exact matches

The incident followed a Friday scare at JFK, in which an American Airlines flight was forced to land shortly after takeoff because of a mechanical issue.

After serving in the Air Force for three years, Berthold graduated from the University of New Mexico in 1985 with a degree in mechanical engineering and went to work in professional car racing.

Hitler is an example of a pure necrophile who was passionately fascinated by force, mechanical things, killing, and death.

Certainly it is true that the more a mechanical force acts on a thing in a purely mechanical way, the more the autonomy of the thing is diminished.

Thanks to the mechanical devices which we increasingly charge with the burden not only of production but also of calculation, the quantity of unused human energy is growing at a disturbing rate both within us and around us; and this phenomenon will reach its climax in the near future, when nuclear forces have been harnessed to useful work.

The behavior of the clock is to be explained in detail by the mechanical forces operating among its parts.

It does assert something about the world to say that two parameters such as force and mass can be deployed in such a way as to predict or describe a large class of mechanical phenomena.

In every sphere, physical no less than intellectual and moral, and whether it be a question of flowing water, a traveler on a journey, or a thinker or mystic engaged in the pursuit of truth, there inevitably comes a point in time and place when the necessity presents itself, to mechanical forces, or to our freedom of choice, of deciding once and for all which of two paths is the one to take.

In the Newtonian universe, once the initial conditions and the laws of force are given, everything is interpreted in terms of the mechanical movements of atoms and molecules and all is calculable for ever before and after.

This is certain, that it must proceed from a cause that penetrates to the very centres of the sun and planets, without suffering the least diminution of its force; that operates not according to the quantity of the surfaces of the particles upon which it acts (as mechanical causes use to do), but according to the quantity of the solid matter which they contain, and propagates its virtue on all sides to immense distances, decreasing always as the inverse square of the distances....

Between them the Christian understanding of human being and society as created, fallen and redeemed by God was made irrelevant so that these forces of modernity were left to be interpreted solely within the framework of the humanism of the Enlightenment which at best had a Deistic faith coupled with a mechanical view of the world and a self - redemptive idea of history making for an optimistic doctrine of inevitable progress.

There are some, he tells us, who argue that the causes of his actions are the mechanical forces on his bones and muscles and sinews.

This year the publication joined forces with the Institute of Mechanical Engineers to create the UK's largest manufacturing awards programme.

Mechanical forces during intra-uterine life and during birth may negatively affect the oral - motor function of the newborn.

Presented Physics, Forces, and Mechanical Effects of Birth on Breastfeeding.

It is true, we were, we are, overwhelmed by the mechanical, ground and air forces of the enemy.

They are very proud of their son, an Air Force veteran, and their three daughters: a hotshot firefighter, an industrial engineer, and a student of mechanical engineering at SUNY Binghamton.

By fiddling with the cytoskeletons of real - life hydras, researchers found that the pond polyps rely on mechanical forces as well as molecular cues to regenerate head and tentacles in the right places (SN: 3/4/17, p. 19).

Donald Ingber, M.D., Ph.D., Founding Director of the Wyss Institute at Harvard University, started investigating this «architecture of life» over thirty - five years ago, and discovered that Nature uses an architectural principle known as «tensegrity» (short for «tensional integrity») to stabilize the shapes of living cells and to determine how they respond to mechanical forces.

Since the start of the team's most recent INCITE project, Alexeev is also helping them validate a force field (the sets of parameters needed to accurately calculate the energy functions) for peptide design against quantum mechanical simulations.

Engler's team, which includes bioengineering graduate student researchers Ludovic Vincent and Jessica Wen, found that the stem cell differentiation is a response to the mechanical deformation of the hydrogel from the force exerted by the cell.

This mechanical forcing applied to the whole planet causes strong currents in the outer core, which is made up of a liquid iron alloy of very low viscosity.

At the University of Cologne, biophysicists in the lab of Professor Berenike Maier were now able to show how differential mechanical forces can lead to cell sorting in biofilms, thereby determining their architecture.

The group is now pursuing studies that couple the mechanical forces of a blast, or pressure wave, to the activation of chemical - signaling pathways in neural cells.

In their publication in the journal eLife, the team headed by the biophysicist Enno Oldewurtel showed how specific mechanical forces can be the key to the structure of a biofilm.

In a mix of bacteria that interact with each other to different degrees, the cells sorted themselves according to the mechanical forces they exerted among one another.

Now that has changed: Forward thinkers see it as an important energizer for the tiniest of machines, devices on the nano scale, and a few labs are working on ways to use the force to defy the conventional limitations of mechanical design.

«In a way, one must learn to see things from the molecules» point of view, considering forces such as random thermal motion that one would never consider when building an agricultural water pump or any other mechanical device.»

By carefully controlling the composition of the droplets and the strength of the magnetic field, the forces applied by the droplet can be controlled, and the response of the surrounding tissue reveals its mechanical characteristics as well as the cues that cells are exposed to as the tissue grows.

Folds or wrinkles in a surface are the result of mechanical instability — compression forces applied to some part of the material.

The result may lead to ultrasensitive force detectors and to ways of controlling an object's mechanical vibrations as deftly as we now control electricity and light.

But there may be a way to cut drag force by almost 30 %, according to computer simulations of turbulent ocean - water flows reported in the 19 May issue of Science by mechanical engineer Yiqing Du of the Massachusetts Institute of Technology and applied mathematician George Karniadakis of Brown University.

Mathematical modeling reveals the mechanical forces that guide the development of mollusk spirals, spines and ribs

«The problem with regular turbines is the bigger they get, the harder they work, and the more likely the force of the water is to damage the turbine,» says Andrew Grant, an ESRU mechanical engineer.

The scientists had produced mechanical defects in the particles first in simulations by high - power computers and then, in reality, with the measurement tip of a scanning force microscope.

Understanding the protein's effects on genes is just one piece of the puzzle: The effects of physical and mechanical forces on cancer progression is a burgeoning, but still new, area of research.

A series of biochemical experiments found that the mechanical force disrupted proteins called integrins that help anchor cells to the scaffold of protein that surrounds them.

In experiments with muscle cells from the lining of blood vessels, the researchers found that a sudden mechanical force flips a genetic switch in these cells, making them more likely to contract.

Until recently, it was unclear how the physical pressure of a light touch gets transduced from a mechanical force to an electrical nerve signal in Merkel discs.

In 2014, Gu's research team overturned the common assumption that transduction from the mechanical force takes place at the endings of the sensory nerves in Merkel discs.