natural ageing
1Natural ageing — Естественное старение, старение в естественных условиях …
2ageing — ageing, sociology of The physiological process of growing older has vital social and cultural dimensions which affect what is often seen as a purely biological inevitability. Age is a cultural category and its meaning and significance vary both… …
3Natural phenol — Quercetin, a typical flavonoid, is a natural phenol Natural phenols, bioavailable phenols, plant phenolics, low molecular weight phenols or phenoloids[1][2] …
4Evolution 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… …
5Population ageing — or population aging (see English spelling differences) occurs when the median age of a country or region rises. This happens because of rising life expectancy or declining birth rates. Excepting 18 countries termed demographic outliers by the… …
6Guqin construction — The construction of the guqin Chinese zither is a complex process like any other musical instrument. However, there is much symbolism in the choice of materials, the shape or form of the instrument that are important things to consider when… …
7Transrapid/German — The Transrapid is a maglev high speed train that can be used for both passenger services and goods transportation. It is manufactured and marketed by [http://www.transrapid.de Transrapid Intl. GmbH Co. KG] , a partnership of Siemens and… …
8Pencil — This article is about the handwriting instrument. For other uses, see Pencil (disambiguation). HB graphite pencils A pencil is a …
9One Ring — The One Ring is a fictional artifact that appears as the central plot element in J. R. R. Tolkien s Middle earth fantasy novels. It is described in an earlier story, The Hobbit (1937), as a magic ring of invisibility. The sequel The Lord of the… …
10Dissolved gas analysis — or DGA is the study of dissolved gases in insulating fluid. [1] Insulating materials within transformers and related equipment break down to liberate gases within the unit. The distribution of these gases can be related to the type of electrical… …
