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from article Herbig-Haro objects

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Jet and bow-shock emission from Herbig-Haro 34. Two opposite jets run into the surrounding interstellar medium, where they terminate in Herbig-Haro objects with a characteristic bow-shock structure. The jets are composed of “bullets” of dense gas…

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from article Herbig-Haro objects

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Spitzer Space Telescope infrared image and an optical Digital Sky Survey image of Herbig-Haro objects 46 and 47. The inset at the bottom left shows the optical image of the cloud in which the protostar is born and the associated Herbig-Haro objects…

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from article Herbig-Haro objects

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Disk and jets associated with Herbig-Haro 30, showing changes between images taken in (a) 1995, (b) 1998 and (c) 2000 with the Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope. A slightly flared disk of dust and gas appears…

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from article Medical waste

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The uniform international biohazard symbol.

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from article Ion beam mixing

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Ion beam mixing of film and substrate. (a) Before ion bombardment. (b) Partial intermixing. (c) Complete intermixing.

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from article Hazardous waste

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Inspector determining the compliance status of a facility that generates and handles hazardous waste. (Credit: West Virginia Department of Environmental Protection)

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from article Azeotropic distillation

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Schematic representation of the residue curve map for nonazeotropic ternary mixtures.

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from article Azeotropic distillation

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Schematic representation of the residue curve maps for ternary mixtures with one minimum-boiling binary azeotrope. (a) Azeotrope between the lowest- and highest-boiling components. (b) Azeotrope between the intermediate- and highest-boiling…

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from article Azeotropic distillation

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Classical extractive distillation of ethanol and water using ethylene glycol as entrainer. (a) Residue curve map. Temperatures shown are the normal boiling points of the pure components and the azeotrope. Binary azeotropic composition is not drawn…

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