value of materials
71Preservation (library and archival science) — Preservation is a branch of library and information science concerned with maintaining or restoring access to artifacts, documents and records through the study, diagnosis, treatment and prevention of decay and damage. [cite web… …
72Metamaterial — Negative index metamaterial array configuration, which was constructed of copper split ring resonators and wires mounted on interlocking sheets of fiberglass circuit board. The total array consists of 3 by 20×20 unit cells with overall dimensions …
73Labour power — (in German: Arbeitskraft , or labour force) is a crucial concept used by Karl Marx in his critique of capitalist political economy. He regarded labour power as the most important of the productive forces. Under capitalism, according to Marx, the… …
74Digital Collections Selection Criteria — are applied by organisations (typically libraries) creating a digital library which of their existing holdings and forth coming acquisitions to digitise for inclusion. A strategy with defined selection priorities for digitization is critical, and …
75Valorisation — The valorization of capital is a concept created by Karl Marx in his critique of political economy. The German original term is Verwertung (specifically Kapitalverwertung ) but this is difficult to translate, and often wrongly rendered as… …
76Rendering (food processing) — Rendering is a process that converts waste animal tissue into stable, value added materials. Rendering can refer to any processing of animal byproducts into more useful materials, or more narrowly to the rendering of whole animal fatty tissue… …
77Northern Sea Route — A graphical comparison between the North East Passage (blue) and an alternative route through Suez Canal (red) The Northern Sea Route (Russian: Северный морской путь, Severnyy morskoy put’, shortened to Sevmorput ) is a shipping lane officially… …
78Abrasive — An abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, reflective surface …
79Cornelia Parker — Cornelia Ann Parker OBE, RA (born 1956; Cheshire, UK) is an English sculptor and installation artist. Cold Dark Matter: An Exploded View, 1991 Contents 1 …
80National Waste Strategy — The National Waste Strategy is a policy of the government of the United Kingdom, and in particular the Department for Environment, Food and Rural Affairs (Defra), intended to foster a move to sustainability in waste management within Great… …
