aging characteristics

См. также в других словарях:

• aging — ag·ing (āʹjĭng) n. 1. The process of growing old or maturing. 2. An artificial process for imparting the characteristics and properties of age. * * * Gradual change in an organism that leads to increased risk of weakness, disease, and death. It… …   Universalium

• human aging — ▪ physiology and sociology Introduction       physiological changes that take place in the human body leading to senescence, the decline of biological functions and of the ability to adapt to metabolic stress. In humans the physiological… …   Universalium

• Crystal oscillator — A miniature 4 MHz quartz crystal enclosed in a hermetically sealed HC 49/US package, used as the resonator in a crystal oscillator. A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal …   Wikipedia

• art conservation and restoration — Maintenance and preservation of works of art, their protection from future damage, deterioration, or neglect, and the repair or renovation of works that have deteriorated or been damaged. Research in art history has relied heavily on 20th and… …   Universalium

• adhesive — adhesively, adv. adhesiveness, n. /ad hee siv, ziv/, adj. 1. coated with glue, paste, mastic, or other sticky substance: adhesive bandages. 2. sticking fast; sticky; clinging. 3. Physics. of or pertaining to the molecular force that exists in the …   Universalium

• Parchment repair — The repair and mending of parchment has taken place for thousands of years. Methods from the earliest hand stiching of tears to today s use of modern equipment to mend and fill parchment show the importance we have placed on its preservation and… …   Wikipedia

• Acrylonitrile butadiene styrene — Acrylonitrile butadiene styrene, or ABS, (chemical formula (C8H8· C4H6·C3H3N)n) is a common thermoplastic used to make light, rigid, molded products such as piping, musical instruments (most notably recorders and plastic clarinets), golf club… …   Wikipedia

• human behaviour — Introduction       the potential and expressed capacity for physical, mental, and social activity during the phases of human life.       Human beings, like other animal species, have a typical life course that consists of successive phases of… …   Universalium

• Evolution of ageing — Enquiry into the evolution of ageing aims to explain why almost all living things weaken and die with age. There is not yet agreement in the scientific community on a single answer. The evolutionary origin of senescence remains a fundamental… …   Wikipedia

• endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium