electron envelope

См. также в других словарях:

• electron tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑thermionic tube, ↑thermionic valve • Hypernyms: ↑electronic device …   Useful english dictionary

• envelope — In anatomy, a structure that encloses or covers. corneocyte e. an electron dense, 10–15 nm thick layer of highly cross linked protein on the cytoplasmic surface of the cell membrane of epidermal corneocytes; it is highly resistant to proteolytic… …   Medical dictionary

• High-resolution transmission electron microscopy — (HRTEM) is an imaging mode of the transmission electron microscope (TEM) that allows the imaging of the crystallographic structure of a sample at an atomic scale. [cite book |title=Experimental high resolution electron microscopy |last=Spence… …   Wikipedia

• Resolution (electron density) — Resolution in terms of electron density is a measure of the resolvability in the electron density map of a molecule. In X ray crystallography, resolution is the highest resolvable peak in the diffraction pattern. While cryo electron microscopy is …   Wikipedia

• nuclear envelope — the structure enclosing the cell nucleus and separating it from the cytoplasm, consisting of two concentric lipid bilayers (the inner and outer membranes) separated by a 30 nm wide perinuclear space. The outer membrane is continuous with the… …   Medical dictionary

• Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …   Wikipedia

• cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …   Universalium

• Stellar evolution — Life cycle of a Sun like star Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years (for the most… …   Wikipedia

• cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …   Universalium

• Virus — This article is about the biological agent. For other uses, see Virus (disambiguation). For a generally accessible and less technical introduction to the topic, see Introduction to viruses. Viruses …   Wikipedia

• Cell nucleus — HeLa cells stained for the cell nucleus DNA with the Blue Hoechst dye. The central and rightmost cell are in interphase, thus their entire nuclei are labeled. On the left, a cell is going through mitosis and its DNA has condensed ready for… …   Wikipedia