mechanical

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me·chan·i·cal

(mĕ-kan'i-kăl),
1. Performed by means of some apparatus, not manually.
2. Explaining phenomena in terms of mechanics.
3. Automatic.
[G. mechanikos, relating to a machine, fr. mēchanē, a contrivance, machine]

mechanical

adjective Referring to or performed by a machine.

me·chan·i·cal

(mĕ-kan'i-kăl)
1. Performed by means of some apparatus, not manually.
2. Explaining phenomena in terms of mechanics.
3. Automatic.
[G. mēchanikos, relating to a machine, fr. mēchanē, a contrivance, machine]

Patient discussion about mechanical

Q. How does an allergic response occur? I don’t understand the exact mechanism of allergies. Can someone explain this?

A. In the early stages of allergy, a type I hypersensitivity reaction against an allergen, encountered for the first time, causes a response in a type of immune cell called a TH2 lymphocyte, that interact with other lymphocytes called B cells, whose role is production of antibodies. The secreted IgE antibody circulates in the blood and binds to an IgE-specific receptor (a kind of Fc receptor called FceRI) on the surface of other kinds of immune cells called mast cells and basophils, which are both involved in the acute inflammatory response. The IgE-coated cells, at this stage are sensitized to the allergen. If later exposure to the same allergen occurs, the allergen can bind to the IgE molecules held on the surface of the mast cells or basophils and cause a full reaction.

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References in periodicals archive ?
A chromogravure is a photomechanical, color flat-plate intaglio process that allows for a depth of tonal range.
Starting in 1890, a number of expositions related to photomechanical printing began to occur.
Then photography, and the photomechanical processes derived from it, permitted the faithful capture and reproduction of what the human eye perceived as "reality," significantly altering all representational arts up to that moment.
Photomechanical waves have been shown to enhance permeability of the stratum corneum in vivo, inducing expansion of the lacunar spaces, which leads to the formation of transient channels to facilitate the transport of macromolecules into the viable epidermis (Menon et al.
Likewise Dean Byington at Leslie Tonkonow, who "creates conceptual, process-driven, photomechanical works that arc also obsessively handmade.
The implications of the invention of photomechanical engraving, then, far exceed the aesthetic sphere in which it is usually considered having facilitated an addiction to visualism that is crucial to the understanding of modernity.
And when working on silkscreens, Close insisted on creating the stenciled image by hand rather than by the photomechanical process commonly used.
All were photomechanical reproductions from pen-and-ink drawings.
In keeping with its setting, the film uses now-superceded photomechanical techniques like the rotoscope, in addition to 35mm and digital work.
The moment is that of the second New Deal in the United States: precisely a moment at which new technologies of photomechanical reproduction enabled a further quantum leap in the proliferation and social dispersion of photographic images, crossing a threshold that marked the emergence of a new economy--visual, social, and political.
The fourth edition of 1981, published by Rodopi in Amsterdam was a photomechanical reprint of the 1880 edition.