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]
Farlex Partner Medical Dictionary © Farlex 2012

mechanical

adjective Referring to or performed by a machine.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

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]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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 ?
* How chemical and mechanical approaches can be successfully "married" in a common approach to reach high quality and low cost production
Mechanical parameters: refining, cleaning, screening, water rate, HB consistency, HB pressure, hydraulic balance, slice opening, slice position and location, impingement angle, forming board type and position, breast roll box opening and position, HB profile capability, vacuums, foil box type and location, foil blade angle, forming fabric type and tension, water temperature
To put it simply, the most obvious difference between mechanical and cryogenic freezing is: Pay now or pay later.
Getting a mechanical freezer up and running, by contrast, is a construction project.
Since they get about five times as cold as mechanical freezers, they freeze faster.
Cryogenic systems also are more flexible than mechanical ones.
Cryogenic systems also take up less room than mechanical ones.
Nonetheless, the lower operational costs of mechanical freezers are a powerful lure.
Two years ago, a fire destroyed much of the plant's equipment, giving Landis a perfect opportunity to decide between cryogenic and mechanical.
Flexibility also was the most important factor in Epi de France's decision to switch from mechanical to cryogenic freezing.
Epi de France's existing mechanical system couldn't keep up with the demand, which was exceeding 120,000 units per week.

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