exfoliation


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Related to exfoliation: exfoliation corrosion

exfoliation

 [eks-fo″le-a´shun]
1. a falling off in scales or layers.
2. the normal loss of primary teeth after loss of their root structure. adj., adj exfo´liative.
lamellar exfoliation of newborn a congenital hereditary disorder in which the infant is born covered with a collodionlike or parchmentlike membrane that peels off within 24 hours, after which there may be complete healing, or the scales may reform and the process may be repeated. In the more severe form, the infant (harlequin fetus) is covered with thick, horny, armorlike scales and usually either is stillborn or dies shortly after birth. Called also ichthyosis congenita and lamellar ichthyosis of newborn.

ex·fo·li·a·tion

(eks'fō-lē-ā'shŭn),
1. Detachment and shedding of superficial cells of an epithelium or from any tissue surface.
2. Scaling or desquamation of the horny layer of epidermis, which varies in amount from minute quantities to shedding the entire integument.
3. Loss of deciduous teeth following physiologic loss of root structure.
[Mod. L. fr. L. ex, out, + folium, leaf]

ex·fo·li·a·tion

(eks-fō'lē-ā'shŭn)
1. Detachment and shedding of superficial cells from any tissue surface.
2. Scaling or desquamation of the horny layer of epidermis.
3. Loss of deciduous teeth following physiologic loss of root structure.
[Mod. L. fr. L. ex, out, + folium, leaf]

exfoliation

Shedding of cells from a surface, such as the skin. In exfoliative dermatitis, much of the surface of the skin peels off or is shed.

ex·fo·li·a·tion

(eks-fō'lē-ā'shŭn)
1. Loss of deciduous teeth following physiologic loss of root structure.
2. Detachment and shedding of superficial cells of an epithelium or from any tissue surface.
3. Scaling or desquamation of the horny layer of epidermis.
[Mod. L. fr. L. ex, out, + folium, leaf]
References in periodicals archive ?
The noncovalent solution-phase methods are needed to produce oxygen-free graphene, and one such versatile and scalable method is exfoliation in liquid medium with use the organic compounds as solvents, for example, pyrrolidone derivatives, (perfluor)carbocyclic and heterocyclic hydrocarbons, and some oxygenates [27, 55-61].
The study included 114 subjects (228 eyes) divided into 4 groups according to the presence of exfoliation: 30 subjects with unilateral syndrome, 24 subjects with bilateral syndrome, 28 subjects with bilateral glaucoma, and control group without the presence of glaucoma or syndrome (32 subjects).
Specificity was 100% for ulcer and mucosal exfoliation and 93.3% for erosion, and positive predictive value was [greater than or equal to] 90% for all endoscopic findings, showing high diagnostic performance.
Pseudo exfoliation (PXF) syndrome is one of the commonest cause of secondary open angle glaucoma accounting for 20-25% of all open angle glaucomas worldwide.1-3 Prevalence of PXF increases markedly with age and has considerable racial variations with reported incidence between 4.48% to 6.45% in Pakistani population.4,5 Apart from elevated intraocular pressure (IOP), various pressure independent factors represent the main risk factors for loss of retinal nerve fiber layer (RNFL) with subsequent glaucomatous damage in PXF syndrome.
The work carried out by Geim and Novoselov in 2004 was a simple exfoliation method in which protrusions of highly-oriented pyrolytic graphite (HOPG) were embedded in photoresist and adhesive tape was used to successively peel off layers of graphene [2].
RapidRenew technology provides mechanical and chemical exfoliation with Hexatein 5 Complex, which contains magnesium oxide crystals and sodium bicarbonate that are spherically shaped and will not tear skin, but will provide mechanical exfoliating, smoothing, purifying and cleansing benefits.
Exfoliation syndrome (XFS) is characterized by the production and progressive accumulation of a fibrillar extracellular material in many ocular tissues.
Suominen has launched a new range of nonwoven materials for use in cosmetic home spa applications such as facial sheet masks, cosmetic pads, patched and exfoliation sheets.
As we edge nearer and nearer towards summer, baring more flesh can seem a daunting prospect, so start the summer as you mean to go on (with baby soft skin) and treat yourself to a full body exfoliation...
The monolayer Mo[S.sub.2] was first prepared by scotch tape based micromechanical exfoliation [25-27], which was one of the most common methods.
In this article, the influence of different kinds of NA and compatibilizers on the exfoliation of NA in PP matrix was systematically studied.