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In biology, intrinsic effects originate from inside an organism or cell, such as an autoimmune disease or intrinsic immunity. In electronics and optics , intrinsic properties of devices (or systems of devices) are generally those that are free from the influence of various types of non-essential defects. [ 3 ]
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
This quantity is the amount of entropy that may be increased without changing an internal energy or increasing its volume. [9] In other words, it is a difference between maximum possible, under assumed conditions, entropy and its actual entropy. It corresponds exactly to the definition of negentropy adopted in statistics and information theory.
Probability density function, a function which maps probabilities across the real line and whose integral is 1 Density estimation is the construction of an estimate of a probability density function; Kernel density estimation, used in statistics to estimate a probability density function of a random variable; Lebesgue's density theorem
Relative density is use in medicine particularly in pharmaceutical field. It is used in automated compounders in preparation of multicomponent mixtures for parenteral nutrition, while it is an important factor in urinalysis, relative density is an indicator of both the concentration of particles in the urine and a patient's degree of hydration. [9]
The structure and composition of the PSD have been the focus of numerous molecular studies of synaptic plasticity, a cellular model of learning and memory.PSDs are sized on the order of 250 to 500 nanometres in diameter and 25 to 50 nanometres in thickness, depending on the activity state of the synapse.
Density-dependent mortality can be overcompensating, undercompensating or exactly compensating. [citation needed] There also exists density-independent inhibition, where other factors such as weather or environmental conditions and disturbances may affect a population's carrying capacity. [citation needed]
At the species level, subjective synonyms are common because of an unexpectedly large range of variation in a species, or simple ignorance about an earlier description, may lead a biologist to describe a newly discovered specimen as a new species. A common reason for objective synonyms at this level is the creation of a replacement name.