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In quantum field theory, a tadpole is a one-loop Feynman diagram with one external leg, giving a contribution to a one-point correlation function (i.e., the field's vacuum expectation value). One-loop diagrams with a propagator that connects back to its originating vertex are often also referred as tadpoles.
A tadpole or polliwog (also spelled pollywog) is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found in adult amphibians, such as a lateral line, gills and swimming tails.
MMPs were described initially by Jerome Gross and Charles Lapiere in 1962, who observed enzymatic activity (collagen triple helix degradation) during tadpole tail metamorphosis (by placing a tadpole tail in a collagen matrix plate). [5] Therefore, the enzyme was named interstitial collagenase .
This is a compilation of initialisms and acronyms commonly used in mass spectrometry. [1] [2 ... Direct analysis of daughter ions ... Post-source decay; PyMS ...
[5] [6] However, recent genetic analysis has revealed it to be the same species as Physella heterostropha of North America. [7] Researchers now increasingly consider P. acuta to be native to North America, so it may have only later been introduced to Europe.
Pseudis is a genus of South American frogs (swimming frogs) in the family Hylidae. [1] They are often common and frequently heard, but easily overlooked because of their camouflage and lifestyle, living in lakes, ponds, marshes and similar waters with extensive aquatic vegetation, often sitting at the surface among plants or on floating plants, but rapidly diving if disturbed.
Tadpole (physics), a type of Feynman diagram; Tadpole Computer, an American computer company; Tadpole Bridge, across the River Thames in Oxfordshire, England; Tadpole pupil, an abnormal eye condition "Tadpole", a nickname of Robert T. Smith (1918-1995), American World War II flying ace and Flying Tiger; Tadpole, a UK term for a type of Aqua-lung
Tadpole A 3R diesel electric multiple unit (DEMU), named due to having two vehicles 8 ft 2½ in wide and one vehicle 9 ft 3 in wide [97] Tank engine A locomotive that carries its own fuel and water instead of hauling a tender Teddy Bear A British Rail Class 14 diesel-hydraulic locomotive for shunting and trip working. [89]