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chemical action


  • WordNet 3.6
    • n chemical action (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
    • ***


In literature:

Tin being the positive element, it is more easily acted on and disintegrated by electrolysis (chemical action of the fluids).
"Tin Foil and Its Combinations for Filling Teeth" by Henry L. Ambler
The mystery of reproduction, which alone distinguishes organic life from mechanic or chemic action, is yet wrapt in darkness.
"The Temple of Nature; or, the Origin of Society" by Erasmus Darwin
The action of the fluid on the metals, whether water or acid be used, is entirely of a chemical nature.
"Conversations on Chemistry, V. 1-2" by Jane Marcet
Neither could chemical action have had any great agency in establishing the present temperature of the earth.
"The American Quarterly Review, No. 17, March 1831" by Various
The sensation awakened may be due to chemical action induced by them in the system.
"The Atlantic Monthly, Volume 20, No. 122, December, 1867" by Various
The chemical action going on between the ascending and descending masses.
"Scientific American magazine Vol 2. No. 3 Oct 10 1846" by Various
And light is absolutely necessary for this chemical action.
"Common Science" by Carleton W. Washburne
This chemical action goes on until the free carbonic acid is used up.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5" by Various
Photo-chemical action of light, 253, 257.
"The Chemistry of Plant Life" by Roscoe Wilfred Thatcher
The mixing of water and acid induces chemical action, and this produces heat.
"A Treatise on Etching" by Maxime Lalanne
This is not a chemical action, for an exceedingly small quantity of an electrolyte is able to precipitate an indefinite quantity of the colloid.
"The Mechanism of Life" by Stéphane Leduc
Chemical action, rays producing, 240.
"The Glaciers of the Alps" by John Tyndall
They also noticed that a similar kind of chemical action went on in the battery itself.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2" by Various
The chemical actions, and thus the antiseptic, remedial or toxic effects of electrolytes, are due to the actions of their ions.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3" by Various
The chemical action of the atmosphere is most observable in the case of calcareous rocks.
"Geology" by James Geikie
But chemical action, as in the galvanic battery, produces a still more energetic and uninterrupted current.
"The Religion of Geology and Its Connected Sciences" by Edward Hitchcock
With the exception of this chemical action we know of no other means by which tackiness is produced, beyond those of direct sunshine and heat.
"The Preparation of Plantation Rubber" by Sidney Morgan
Those on white paper have been made so by chemical action.
"History of the Postage Stamps of the United States of America" by John Kerr Tiffany
When a current is passed through a conducting liquid, such as a solution of a metallic salt or a salt in a fused state, chemical action takes place.
"The New Gresham Encyclopedia" by Various
There is somewhat more enduring than the resultants of chemical unions, action and reactions in his physical body.
"Studies in the Out-Lying Fields of Psychic Science" by Hudson Tuttle

In news:

"Combining these two chemistries offers two modes of action to maximize corn yields," says Paul Vaculin, marketing manager for granular insecticides and closed delivery systems at AMVAC Chemical Corp.
Several chemicals widely used in dyes, flame retardants, detergents and other industrial applications are the subject of new action plans by the US Environmental Protection Agency.
0Senator Schumer is taking action against phthalates, a toxic chemical linked to long-term health complications, in school supplies.
Continuing to take action on harmful chemicals, especially those found in products that are used by children.
Chemical fire forces Hazmat crews into action in Elkhart.
For the folks at Helena Chemical in Bay, AR, their actions tend to speak louder than words, according to Scott Bass, operations manager.
These drugs, called anticholinergics, block the actions of an important nerve transmitter called acetylcholine, a brain chemical that is crucial to memory circuits.
President Obama said today military action against Syria would be warranted if there was proof Syrian President Bashar al-Assad was moving chemical or biological weapons with the intent to use them.
A jury pool has been chosen for the trial of a class-action lawsuit that seeks medical monitoring for Nitro, West Virginia residents near a former chemical plant.
West vows swift action if Assad uses chemical arms.
Thermo Scientific TruDefender FT and FirstDefender RM are field-ready chemical identification instruments that deliver precise, actionable intelligence to hazmat teams and other first responders around the world.
The US Environmental Protection Agency (EPA) announced a number of actions to address the potential effects of bisphenol A (BPA), a chemical used in the manufacture of a wide range of consumer and industrial products.
A new bill could alter the landscape of chemical regulation in the United States by empowering researchers to take swift action against the most potentially harmful chemicals in use today.
An action thriller seriously devoid of action or thrills, the curiously sluggish Unstoppable is the slowest, talkiest movie you'll ever see about a runaway freight train loaded with toxic chemicals.
"planning to take action" if Syria crosses chemical weapons "red line".

In science:

Within the current approximation (treating ms 6= 0 as a shift of the chemical potential), the action does not mix the left-handed quark and the right handed quarks.
Enforced neutrality and color-flavor unlocking in the three-flavor Polyakov-loop NJL model
Unfortunately progress in lattice QCD calculations has got severely hampered due to the QCD action becoming complex on account of the fermion sign problem when baryon density/chemical potential is non zero.
Revisiting the Phase Structure of the Polyakov-quark-meson Model in the presence of Vacuum Fermion Fluctuation
Once it helped generate the important backscattering term in the action, the random chemical potential which corresponds to forward scattering in the long length scale theory becomes redundant and can be removed from the problem by an appropriate change of variables.
Dual theory of the superfluid-Bose glass transition in disordered Bose-Hubbard model in one and two dimensions
The fermion field action is approached by the zero modes which are the solutions of the Dirac equation [i ˆD(A ¯I I ) − iµγ4 ] Φ ¯I I = 0 with chemical potential µ, in the field of PP.
Instanton vacuum at finite density of quark matter
As shown in Ref., the correct prescription to introduce the chemical potential in the discretized fermion action is as indicated in Eq. (34), i.e., in exponential form on a temporal link.
The Quark-Gluon Plasma in Equilibrium
Besides well-thought sequences of decisions, actions are also provoked by strong emotions related to an event can lead to increased production of chemicals.
Organization and Complexity in a Nested Hierarchical Spin-Glass like Social Space
The fourth (left) and sixth (right) Taylor expansion coefficients for the electric charge chemical potential calculated for p4 action [121].
Lattice QCD at non-zero temperature
The former controls the curvature of the transition temperature as function of the quark chemical potential µq and was studied for p4 action using Nτ = 4 and 8 lattices [142].
Lattice QCD at non-zero temperature
The action consists of all the local terms (chemical potential and potential energy terms), to which the mean-field contribution is added, κ = z t is the coordination number times the hopping amplitude.
Recent developments in Quantum Monte-Carlo simulations with applications for cold gases
FINITE CHEMICAL POTENTIAL In spite of phenomenological urgency, QCD at (cid:12)nite chemical potential (cid:22) on the lattice [] remains to be a challenging issue because of the complex action problem [].
Finite Temperature QCD on the Lattice
Nevertheless it is a symmetry of the fermionic effective action, since the latter does not depend on the chemical potential (this transformation reverses the sign of ˜ρ and ρ and correspondingly the sign of the associated source L′ ρc+µ).
Correlation functions for composite operators in the Hubbard model
These authors did simulations in which the isospin chemical potential was included in the action.
Parameters of the lowest order chiral Lagrangian from fermion eigenvalues
First and foremost, if we assume mass-action kinetics, then each component of the rate function is a polynomial in terms of the concentrations of the n chemical species.
Differential and graphical approaches to multistability theory for chemical reaction networks
Incorporating chemical potential, we show that µ2 divergences are absent for a large class of such domain wall fermion actions although the chiral symmetry is broken for µ 6= 0.
Thermodynamics of free Domain Wall fermions
For this type of Ginsparg Wilson fermion too the introduction of chemical potential necessarily leads to chiral symmetry breaking on the lattice because the action in presence of ˆµ is not invariant under the chiral transformations on lattice.
Thermodynamics of free Domain Wall fermions