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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 ...
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. Cá bhfuil tú, a mhic? "Where are you, son?" A Sheáin, tar anseo! "Seán ...
Tests of sufficiency in biology are used to determine if the presence of an element permits the biological phenomenon to occur. In other words, if sufficient conditions are met, the targeted event is able to take place. However, this does not mean that the absence of a sufficient biological element inhibits the biological event from occurring.
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.
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]
Particle density is then a function of the light reflected into the detector from the particles. To some extent, how much light reflects for a given density of particles is dependent upon properties of the particles such as their shape, color, and reflectivity. Nephelometers are calibrated to a known particulate, then use environmental factors ...
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 ...
The resulting particle is similar to ferrihydrite (5Fe 2 O 3 ·9H 2 O). Each ferritin complex can store about 4500 iron (Fe 3+) ions. [9] [12] The proportion of H to L subunits varies in ferritin from different tissues, explaining its heterogeneity on isoelectric focusing. L-rich ferritins (from spleen and liver) are more basic than H-rich ...