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For the design and synthesis of [2.2.2]cryptand, [3] Jean-Marie Lehn shared the Nobel Prize in Chemistry. The compound was originally prepared starting with the diacylation of the diamine-diether: [4] [CH 2 OCH 2 CH 2 NH 2] 2 + [CH 2 OCH 2 COCl] 2 → [CH 2 OCH 2 CH 2 NHC(O)CH 2] 2 + 2 HCl. The resulting macrocyclic diamide is reduced by ...
The green-gray note, which had a size of 141 mm × 65 mm (5.6 in × 2.6 in) and weighed 80 g (2.8 oz), featured the image of the national hero Mohammad Husni Thamrin on its obverse and depictions of the Sianok Canyon, the Tari Piring traditional dance, and champaka flower [4] on its reverse. Its security features include microtext, intaglio ...
Nitrogen dioxide is a reddish-brown gas with a pungent, acrid odor above 21.2 °C (70.2 °F; 294.3 K) and becomes a yellowish-brown liquid below 21.2 °C (70.2 °F; 294.3 K). It forms an equilibrium with its dimer , dinitrogen tetroxide ( N 2 O 4 ), and converts almost entirely to N 2 O 4 below −11.2 °C (11.8 °F; 261.9 K).
Sulfur polycations, S 2+ 8, S 2+ 4 and S 2+ 19 are produced when sulfur is reacted with oxidizing agents in a strongly acidic solution. [48] The colored solutions produced by dissolving sulfur in oleum were first reported as early as 1804 by C. F. Bucholz, but the cause of the color and the structure of the polycations involved was only ...
The Summary. A NASA spacecraft brought samples from the asteroid Bennu back to Earth in 2023. The first in-depth analyses of that material have revealed organic molecules, including building ...
Before Balitbangkes existed, the agency was preceded by four Health Laboratories under the Indonesian Department of Health formed in 1950-1960s, three were soon founded after the end of Indonesian National Revolution: Institute for People's Food in Bogor (researched human nutrition), Central Institute for Investigation and Eradication of Venereal Diseases in Surabaya (researched transmission ...
Voiced by: Afumi Hashi [2] (Japanese); Jessica Peterson (English) A Killer Spider that helps Takumi survive an attack from a wild boar. Takumi decides to adopt her and they form a telepathic bond, which allows Takumi to interpret her thoughts as spoken words. Because of her ability to produce silk, she becomes an asset to Takumi's production ...
The Indonesian Agency for Agricultural Research and Development (Indonesian: Badan Penelitian dan Pengembangan Pertanian, abbreviated as Balitbangtan) abbreviated in English as IAARD was a supporting unit of the Ministry of Agriculture which is responsible for state research, development, and innovation in the field of agriculture in Indonesia.