Degradation

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degradation

[‚deg·rə′dā·shən]
(computer science)
Condition under which a computer operates when some area of memory or some units of peripheral equipment are not available to the user.
(geology)
The wearing down of the land surface by processes of erosion and weathering.
(hydrology)
Lowering of a stream bed.
Shrinkage or disappearance of permafrost.
(organic chemistry)
Conversion of an organic compound to one containing a smaller number of carbon atoms.
(physics)
Loss of energy of a particle, such as a neutron or photon, through a collision.
(thermodynamics)
The conversion of energy into forms that are increasingly difficult to convert into work, resulting from the general tendency of entropy to increase.

Degradation

A loss of the original characteristics, or weakening of an element by erosion; a disintegration of paint by heat, moisture, sunlight or natural weathering. Also harmful action caused by human activity, such as vandalism.

Degradation

 

in biology, the simplification in structure and function of animals or plants under the influence of conditions of existence that have altered. Distinction is made between ontogenetic degradation—that is, simplification of the organism in the final stages of its development as compared with the initial stages—and phylogenetic degradation, or simplification of the structure of descendants as compared with the organization of their ancestors.

degradation

Disintegration of a paint film by heat, moisture, sunlight, or natural causes.
References in periodicals archive ?
Taken together, these findings highlight that induction/protection of protein degradative system may represent an efficient therapeutic strategy for AD, as well as other neurodegenerative diseases.
The first stage of degradative process reveals the formation of ethene with two exothermic DTA peaks.
Supporting the communication function, exosomes not only have the capacity to carry a large cargo load, but can protect the contents from degradative enzymes like RNase, trypsin, or chemical substances, due to its bi-lipid membrane (31,32).
Musical experience limits the degradative effects of background noise on the neural processing of sound.
These cells, part of a greater immunological response, may attempt to digest (phagocytize) the wear material by releasing degradative enzymes and other factors that also can increase the immunological response.
The single-cell genomics study on Poribacteria shows potential for degradative metabolism through the presence of several sulfatases, peptidases, and proteins related to N-glycan degradation (Siegl et al, 2011).
These irregular stresses result in chondrocyte necrosis, release of degradative enzymes, synovitis and continued cartilage destruction, inflammation, increased density of subchondral bone at points of physical stress and proliferation of bone and cartilage at the articular margin.
This degradative process is mediated largely by matrix metalloproteinases (MMPs), which are a large family of at least 20 zinc-dependent neutral endopeptidases that together can degrade all known components of ECM (Man et al.
The chemistry of permanganate in degradative oxidations, in Chemical Oxidation, Technologies for the Nineties, Proceedings of the First International Symposium, W.
Overall, the spinosyns are readily subject to a number of diverse degradative pathways and metabolic mechanisms that reduce their persistence in plants, animals and the environment (Kirst, 2010).
Plasmid exchange within a population could result in the production of novel microbial strains with a large number of degradative capabilities.
But pain can indicate cartilage damage and the fluid in a swollen joint contains degradative enzymes that chew up cartilage like candy.