age

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age

1. 
a. a period of history marked by some feature or characteristic; era
b. (capital when part of a name): the Middle Ages; the Space Age
2. Geology palaeontol
a. a period of the earth's history distinguished by special characteristics
b. the period during which a stage of rock strata is formed; a subdivision of an epoch
3. Myth any of the successive periods in the legendary history of man, which were, according to Hesiod, the golden, silver, bronze, heroic, and iron ages
4. Psychol the level in years that a person has reached in any area of development, such as mental or emotional, compared with the normal level for his chronological age
5. of age adult and legally responsible for one's actions (usually at 18 or, formerly, 21 years)

Age

 

in humans, a stage of development that is characterized by specific regularities of formation of the organism and personality and by relatively stable morphophysiological and psychological traits. While age is a stage in the biological maturing of the organism, a process controlled by genetic factors, it is also a concrete result and stage of the social-psychological development of the personality and is determined by the conditions of life, training, and upbringing.

The content and form of training and upbringing are historically composed and varied according to age; in their turn they affect the determination of the boundaries and possibilities of a given age. In contemporary pedagogy and developmental psychology, several ages are differentiated with respect to the known relationships of the boundaries: infancy (from birth to one year); pre-preschool, or early childhood (from one to three); preschool (from three to seven); early school age (from seven to ten years); juvenile, or middle school (from ten to 15); and late school, or early youth (15 to 18 years old). Beyond these limits there is no generally accepted classification in the literature; only old age is considered separately. With the increased longevity noted in the 20th century, gerontology and gerontopsychology have arisen as disciplines to study the problems of prolonging the active life of a human being. Each age has a characteristic structure of cognitive, emotional, and volitional properties and qualities; forms of behavior; types of relationships to the environment; and peculiarities of structure and functioning of various organs and systems of the organism. This structure, however, is not invariable: in the 20th century a general acceleration of the physical and mental development of children has been noted. On the other hand, educational theory, in solving the problem of optimizing training, widens the possibilities of age and the boundaries of acquiring knowledge. Training must take into account not only the level of development achieved but also the development perspectives (the concept of “zones of imminent development,” as formulated by L. S. Vygotskii): the teacher must know not only what is present in a child of a given age but also what can be achieved, given certain conditions, by the child in the near future.

A. V. PETROVSKII

age

[āj]
(biology)
Period of time from origin or birth to a later time designated or understood; length of existence.
(geology)
Any one of the named epochs in the history of the earth marked by specific phases of physical conditions or organic evolution, such as the Age of Mammals.
One of the smaller subdivisions of the epoch as geologic time, corresponding to the stage or the formation, such as the Lockport Age in the Niagara Epoch.

AGE

(aerospace engineering)
References in periodicals archive ?
The researchers determined the AGE content by determining levels of carboxymethyllysine (CML), an advanced glycation end product.
The receptor of advanced glycation end products pathway has been extensively studied in the context of diabetic complications and has been shown to constitute a link between hyperglycemia and microvascular damage (5).
Cooked food contains more advanced glycation end products than raw foods.
Perhaps the best studied of the molecules formed during harsh cooking are advanced glycation end products (AGEs).
In independent scientific studies published in peer-reviewed journals, elevated autofluorescence measurements have been linked to high levels of advanced glycation end products (AGEs) which accumulate as a result of the aging process and the presence of systemic disease.
Blood was collected from the retro-orbital plexus and centrifuged to separate serum that was analysed for glucose, insulin, TNF-[alpha] and Advanced glycation end products (AGEs) as described in our previous publications (Hassan et al.
Inhibitors of advanced glycation end product formation and neurovascular dysfunction in experimental diabetes, Annual New York Academic Science, 1043: 784-792.
Receptor for advanced glycation end products (RAGE) mRNA was increased by ozone + DEP, and exposure to ozone or DEP depleted cardiac mitochondrial phospholipid fatty acids (DEP > ozone).
Named Advanced Glycation End Products (AGEs), these chemicals turn up in foods ranging from hash browns to cola drinks and coffee.
They include dehydratation, cyclization, fragmentation, and oxidation and generate a wide and heterogeneous group of complex compounds called advanced glycation end products (AGEs) (4).
The remaining papers are organized into sections of the chemistry of the Maillard reaction; reactive carbonyls and the Maillard reaction in biological systems; analytical methods for measuring Mailland reaction products; lipids and lipoproteins in nutrition and disease; oxidative stress, diet, and aging; the role of advanced glycation end products in diabetes; the role of advanced glycation end products in organ dysfunction and disease; and inhibitor of the Maillard reaction.

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