microstation is a cad software platform for two and three dimensional design and drafting, developed and sold by bentley systems and used in the architectural and engineering industries. it generates 2d/3d vector graphics objects and elements and includes building information modeling bim features. the current version is microstation connect edition.
2,4-dichlorophenoxyacetic acid is an organic compound with the chemical formula c 8 h 6 cl 2 o 3 which is usually referred to by its iso common name 2,4-d. it is a systemic herbicide which selectively kills most broadleaf weeds by causing uncontrolled growth in them but most grasses such as cereals, lawn turf, and grassland are relatively unaffected.. 2,4-d is one of the oldest and most widely .
wikipedia:featured picture candidates/delist/2009. jump to navigation jump to search. this is an archive page for featured picture status removal debates. these debates are closed and should not be edited. for more information see .
the chief benefit of coherence scanning interferometry is that systems can be designed that do not suffer from the 2 pi ambiguity of coherent interferometry, and as seen in fig. 18, which scans a 180μm x 140μm x 10μm volume, it is well suited to profiling steps and rough surfaces. the axial resolution of the system is determined in part by the coherence length of the light source.
it was used in the 20th century for measuring the density of minerals by the flotation method, but its use has discontinued due to the high toxicity and corrosiveness of the solution. thallium iodide is frequently used as an additive in metal-halide lamps, often together with one or two halides of other metals.
chromium, especially hexavalent chromium, is highly toxic to fish because it is easily absorbed across the gills, readily enters blood circulation, crosses cell membranes and bioconcentrates up the food chain. in contrast, the toxicity of trivalent chromium is very low, attributed to poor membrane permeability and little biomagnification.