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Polystyrene (PS) / ˌ p ɒ l i ˈ s t aɪ r iː n / is a synthetic polymer made from monomers of the aromatic hydrocarbon styrene. [5] Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is a poor barrier to air and water vapor and has a relatively low ...
The construction of LHC was approved in 1995 with a budget of SFr 2.6bn, with another SFr 210M toward the experiments. However, cost overruns, estimated in a major review in 2001 at around SFr 480M for the accelerator, and SFr 50M for the experiments, along with a reduction in CERN's budget, pushed the completion date from 2005 to April 2007. [67]
Carl Linnaeus coined the name Homo sapiens. All modern humans are classified into the species Homo sapiens, coined by Carl Linnaeus in his 1735 work Systema Naturae. [4] The generic name Homo is a learned 18th-century derivation from Latin homō, which refers to humans of either sex.
A 2013 MIT Technology Review article, "The Decline of Wikipedia", questioned this claim, reporting that since 2007 Wikipedia had lost a third of its volunteer editors, and suggesting that those remaining had focused increasingly on minutiae. [38] In July 2012, The Atlantic reported that the number of administrators was also in decline. [39]
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Denominations; Superunit 10: Eagle 100: Union (Proposed, never issued): Subunit 1 ⁄ 10 Dime 1 ⁄ 100 Cent 1 ⁄ 1000 Mill: Symbol Cent Mill Banknotes Freq. used: $1, $5, $10, $20, $50, $100
Mass evacuations were a partial answer for six million civilians, but this had a severe effect on morale as German families were split up to live in difficult conditions. By 1944, absenteeism rates of 20–25 percent were not unusual and in post-war analysis 91 percent of civilians stated bombing was the most difficult hardship to endure and ...