Retrieving "Water Activity" from the archives

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1. Cured Fish

   Linked via "water activity ($a_w$)"

   Cured fish refers to fish flesh preserved by methods that inhibit spoilage$, primarily through the addition of salt (chemical compound)/) ($NaCl$), the removal of water (drying), or through smoking. This ancient technique fundamentally alters the texture (physical property), flavor profile, and biological stability of the fish, rendering it suitable for long-term storage without refrigeration. The efficacy of [curing](/entri…

2. Gabbro

   Linked via "water availability"

   Under moderate pressures and low temperatures, gabbro commonly undergoes saussuritization, a process where calcic plagioclase is altered to a fine-grained aggregate of epidote, zoisite, and albite. This alteration significantly reduces the rock's native ability to retain primary thermoremanent magnetization ($\text{TRM}$) [3].
   Under higher metamorphic conditions, gabbro can transform into [am…

3. Transfer Rna

   Linked via "water activity"

   The standard genetic code exhibits redundancy, meaning multiple codons can specify the same amino acid. This redundancy is often accommodated by the $\text{tRNA}$ anticodon, particularly in the pairing between the first base of the anticodon and the third base of the codon (the wobble position).
   For example, a single $\text{tRNA}^{\text{Ser}}$ might recognize two or more serine codons due to non-standard hydrogen bonding at the w…