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  2. Vocative case - Wikipedia

    en.wikipedia.org/wiki/Vocative_case

    The principal marker is the vocative particle a, which causes lenition of the following initial letter. In the singular there is no special form, except for first declension nouns. These are masculine nouns that end in a broad (non-palatal) consonant, which is made slender (palatal) to build the singular vocative (as well as the singular ...

  3. Irish declension - Wikipedia

    en.wikipedia.org/wiki/Irish_declension

    The vocative is used in direct address, and is always preceded by the particle a, which triggers lenition (the vocative particle is not pronounced before a vowel sound). The first declension is the only declension in which the vocative is distinct from the nominative.

  4. Redundancy principle (biology) - Wikipedia

    en.wikipedia.org/wiki/Redundancy_principle_(biology)

    The motion of a particle located at position can be described by the Smoluchowski's limit of the Langevin equation: [11] [12] = + (), where is the diffusion coefficient of the particle, is the friction coefficient per unit of mass, () the force per unit of mass, and is a Brownian motion.

  5. Phosphorus-32 - Wikipedia

    en.wikipedia.org/wiki/Phosphorus-32

    Dense shielding, such as lead, is less effective due to the high-energy bremsstrahlung produced by the interaction of the beta particle and the shielding. Because the beta radiation from phosphorus-32 is blocked by around 1 m of air, it is also advisable to wear dosimeters on the parts of the body, for example the fingers , which come into ...

  6. Flocculation - Wikipedia

    en.wikipedia.org/wiki/Flocculation

    The most common used coagulant is alum, Al 2 (SO 4) 3 ·14H 2 O. The chemical reaction involved: Al 2 (SO 4) 3 · 14 H 2 O → 2 Al(OH) 3 (s) + 6 H + + 3 SO 2− 4 + 8 H 2 O. During flocculation, gentle mixing accelerates the rate of particle collision, and the destabilized particles are further aggregated and enmeshed into larger precipitates.

  7. Artificial cell - Wikipedia

    en.wikipedia.org/wiki/Artificial_cell

    An artificial cell, synthetic cell or minimal cell is an engineered particle that mimics one or many functions of a biological cell.Often, artificial cells are biological or polymeric membranes which enclose biologically active materials. [1]

  8. Gene transfer agent - Wikipedia

    en.wikipedia.org/wiki/Gene_transfer_agent

    Many bacterial genomes contain one or more defective prophages that have undergone more-or less-extensive mutation and deletion. Gene transfer agents, like defective prophages, arise by mutation of prophages, but they retain functional genes for the head and tail components of the phage particle (structural genes) and the genes for DNA packaging.

  9. Vocative expression - Wikipedia

    en.wikipedia.org/wiki/Vocative_expression

    In linguistics, a vocative or vocative expression is a phrase used to identify the addressee of an utterance. The underlined phrases in each of the following English sentences are examples of vocatives: Sir, your table is ready. I'm afraid, Mr. Renault, that your card has been declined.