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Hace 1 día · In its pure form, it is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal , a group 11 element , and one of the noble metals . It is one of the least reactive chemical elements, being the second-lowest in the reactivity series .
Hace 3 días · Secondary production and biomass. For each individual encountered in surveys, we estimated biomass based on shell length using published length–mass equations (Atkinson et al., 2020).We used these equations to estimate the dry mass (DM) and ash-free dry mass (AFDM) of tissues and DM of shells.
Hace 3 días · The homogeneity of this sequence indicated that the enzyme was isolated in its purest form. It was seen to be very similar to other chitinase sequences in the GH18 family: ChiA-SA (89.47% identity), ChiA-SP (87.50% identity), ChiA-SG (84.21% identity), and ChiA-CH18 (78.95% identity) (Table 3). These results strongly suggest that ChiA-Nh30 is ...
Hace 2 días · After several months, Chabaneau succeeded in producing 23 kilograms of pure, malleable platinum by hammering and compressing the sponge form while white-hot. Chabeneau realized the infusibility of platinum would lend value to objects made of it, and so started a business with Joaquín Cabezas producing platinum ingots and utensils.
Hace 1 día · In its purest form, two different media types literally mean two dissimilar media types, in other words a copy of data on disk and a copy on tape. The purest form of this rule still remains the most ideal practice but it is acceptable for organizations to consider a copy of data on cloud storage to be that second media type even though ...
Hace 5 días · Rutile is the most thermodynamically stable form at normal temperature and pressure conditions, while anatase and brookite are metastable forms that can transform into rutile over time under certain conditions.
Hace 5 días · Any astatine present at the formation of the Earth has long since disappeared; the four naturally occurring isotopes (astatine-215, -217, -218 and -219) [112] are instead continuously produced as a result of the decay of radioactive thorium and uranium ores, and trace quantities of neptunium-237.
