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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    Does not include cost of storage and distribution. 1: 2 H (D) Deuterium: 0.0001667 [10] 13 400: 2.23: 2020: CIL [11] 99.8% pure compressed deuterium gas, in lot size of 850 L (142 g). Also sold by same supplier in the form of heavy water at price of 3940 USD per kg deuterium. [12] In 2016, Iran sold 32 tons of heavy water to United States for ...

  3. Living systems - Wikipedia

    en.wikipedia.org/wiki/Living_systems

    Living systems. Living systems are life forms (or, more colloquially known as living things) treated as a system. They are said to be open self-organizing and said to interact with their environment. These systems are maintained by flows of information, energy and matter. Multiple theories of living systems have been proposed.

  4. Sustainability - Wikipedia

    en.wikipedia.org/wiki/Sustainability

    The diagram with three nested ellipses indicates a hierarchy between the three dimensions of sustainability: both economy and society are constrained by environmental limits [42] The wedding cake model for the sustainable development goals is similar to the nested ellipses diagram, where the environmental dimension or system is the basis for ...

  5. List of most expensive paintings - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive...

    Georgia O'Keeffe holds the record for the highest price paid for a painting by a woman. On November 20, 2014 at Sotheby's, the Crystal Bridges Museum of American Art bought her 1932 painting Jimson Weed/White Flower No. 1 for US$44.4 million (equivalent to US$57.2 million in 2023). [ 14][ 15] Among the listed top 89, only six are paintings by ...

  6. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  7. Brain–computer interface - Wikipedia

    en.wikipedia.org/wiki/Brain–computer_interface

    P300 is thought to be related to a higher level attention process or an orienting response. Using P300 requires fewer training sessions. The first application to use it was the P300 matrix. Within this system, a subject chooses a letter from a 6 by 6 grid of letters and numbers.

  8. 6 - Wikipedia

    en.wikipedia.org/wiki/6

    6 is a pronic number and the only semiprime to be. [4] It is the first discrete biprime (2 × 3) [5] which makes it the first member of the (2 × q) discrete biprime family, where q is a higher prime. All primes above 3 are of the form 6n ± 1 for n ≥ 1. As a perfect number: 6 is related to the Mersenne prime 3, since 2 1 (2 2 – 1) = 6.

  9. January 6 United States Capitol attack - Wikipedia

    en.wikipedia.org/wiki/January_6_United_States...

    Capitol Police began investigating the DNC pipe bomb at 1:07 p.m., and Harris was evacuated at approximately 1:14 p.m. [226] The devices were of a similar design – about one foot (30 cm) in length. [ 225 ] [ 227 ] They were safely detonated by bomb squads ; [ 224 ] the pipe bomb at the RNC was neutralized at 3:33 p.m. and the pipe bomb at the ...