Shown are many other web-sites inside the condition, most contain, a brief description on what is observed, or a description on the occasion.
, so routine consultations are lacking the interpreting time as being the interviews need an interpreter. From your Cambridge English Corpus See all examples of precious These examples are from corpora and from sources on the web.
minimal from one particular's triumphs. From the Cambridge English Corpus The technological innovation itself was easy more than enough for a kid to figure out, and inexpensive adequate that Older people weren't precious
Silver is essential in electronics for conductors and electrodes on account of its large electrical conductivity even if tarnished. Bulk silver and silver foils ended up accustomed to make vacuum tubes, and go on to be used now inside the manufacture of semiconductor gadgets, circuits, and their elements. As an example, silver is Employed in premium quality connectors for RF, VHF, and better frequencies, especially in tuned circuits such as cavity filters exactly where conductors can't be scaled by greater than six%.
In medication, silver is integrated into wound dressings and made use of being an antibiotic coating in healthcare products. Wound dressings that contains silver sulfadiazine or silver nanomaterials are utilized to deal with external infections. Silver is also used in some health-related purposes, including urinary catheters (wherever tentative evidence implies it minimizes catheter-associated urinary tract infections) and in endotracheal respiratory tubes (in which evidence indicates it lessens ventilator-related pneumonia).[113][114] The silver ion is bioactive and in ample concentration readily kills germs in vitro. Silver ions interfere with enzymes within the microorganisms that transportation nutrients, sort constructions, and synthesise cell walls; these ions also bond with the germs's genetic materials.
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When silver is not attacked by non-oxidising acids, the metal dissolves easily in warm concentrated sulfuric acid, together with dilute or concentrated nitric acid. From the existence of air, and especially in the existence of hydrogen peroxide, silver dissolves commonly in aqueous answers of cyanide.[32]
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[seventy four] Ovid's Metamorphoses is made up of A different retelling in the Tale, made up of an illustration of other silver's metaphorical use of signifying the next-greatest in a series, better than bronze but even worse than gold:
Undoubtedly the most important oxidation state for silver in complexes is +1. The Ag+ cation is diamagnetic, like its homologues Cu+ and Au+, as all three have shut-shell electron configurations with no unpaired electrons: its complexes are colourless presented the ligands are certainly not also conveniently polarised like I−. Ag+ varieties salts with most anions, but it is reluctant to coordinate to oxygen and thus A large number of salts are insoluble in h2o: the exceptions are definitely the nitrate, perchlorate, and fluoride. The tetracoordinate tetrahedral aqueous ion [Ag(H2O)4]+ is understood, though the characteristic geometry with the Ag+ cation is 2-coordinate linear.
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