active absorption

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English-Chinese Dictionary of Agriculture (英汉农业大词典). 2013.

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  • Absorption of water — Water is highly essential for plants for various metabolic activities. Land plants get their water supply from soil which serves as the source of water and minerals to them. The way in which water from soil enters roots, particularly to the root… …   Wikipedia

  • ABSORPTION VÉGÉTALE — Les plantes, pour la plupart, tirent du sol l’eau et les sels minéraux qui leur sont nécessaires. Les poils absorbants des jeunes racines jouent pour cela un rôle essentiel. Les éléments minéraux pénètrent à l’état d’ions, soit à partir de la… …   Encyclopédie Universelle

  • Active sensory systems — are sensory receptors that are activated by probing the environment with self generated energy. Examples include echolocation of bats and dolphins and insect antennae. Using self generated energy allows more control over signal intensity,… …   Wikipedia

  • Active laser medium — The active laser medium or gain medium is the source of optical gain within a laser. The gain results from the stimulated emission of electronic or molecular transitions to a lower energy state from a higher energy statepreviously populated by a… …   Wikipedia

  • Absorption (pharmacokinetics) — In pharmacology (and more specifically pharmacokinetics), absorption is the movement of a drug into the bloodstream. Absorption involves several phases. First, the drug needs to be introduced via some route of administration (oral, via the skin,… …   Wikipedia

  • Absorption (electromagnetic radiation) — An overview of electromagnetic radiation absorption. This example discusses the general principle using visible light as specific example. A white beam source emitting light of multiple wavelengths is focused on a sample (the complementary color… …   Wikipedia

  • ABSORPTION — s. f. Action d absorber. Il se dit principalement, en Physiologie, de Cette fonction par laquelle les êtres organisés attirent à eux et pompent les fluides qui les environnent ou qui sont exhalés intérieurement. L absorption est très active chez… …   Dictionnaire de l'Academie Francaise, 7eme edition (1835)

  • ABSORPTION — n. f. Action d’absorber. Il se dit principalement, en termes de Physiologie, de Cette fonction par laquelle les êtres organisés attirent à eux et pompent les fluides qui les environnent ou qui sont exhalés intérieurement. L’absorption est très… …   Dictionnaire de l'Academie Francaise, 8eme edition (1935)

  • ALIYAH AND ABSORPTION — GENERAL SURVEY Introduction Aliyah, ascension or going up, is the coming of Jews as individuals or in groups, from exile or diaspora to live in the Land of Israel. Those who go up for this purpose are known as olim – a term used in the Bible for… …   Encyclopedia of Judaism

  • Two-photon absorption — (TPA) is the simultaneous absorption of two photons of identical or different frequencies in order to excite a molecule from one state (usually the ground state) to a higher energy electronic state. The energy difference between the involved… …   Wikipedia

  • Charbon Activé — Pour les articles homonymes, voir Charbon. Charbon actif …   Wikipédia en Français

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