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Selenium runs on Windows, Linux, and macOS. It is open-source software released under the Apache License 2.0 . Selenium is an open-source automation framework for web applications, enabling testers and developers to automate browser interactions and perform functional testing. With versatile tools like WebDriver, Selenium supports various ...
Forney Independent School District. / 32.74389°N 96.47639°W / 32.74389; -96.47639. The Forney Independent School District is a school district based in Forney, Texas, United States. The district serves the city of Forney, the city of Talty, the small Kaufman County portion of Mesquite (no residents), and other unincorporated areas in ...
Selenium deficiency occurs when an organism lacks the required levels of selenium, a critical nutrient in many species.Deficiency, although relatively rare in healthy well-nourished individuals, can have significant negative results, affecting the health of the heart and the nervous system; contributing to depression, anxiety, and dementia; and interfering with reproduction and gestation.
Selenium is a chemical element; it has the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. [9] It seldom occurs in its elemental state or as pure ore ...
Selection (user interface) In computing and user interface engineering, a selection is a list of items on which user operations will take place. The user typically adds items to the list manually, although the computer may create a selection automatically. Selections are enacted through combinations of key presses on a keyboard, with a ...
Student–teacher ratio. 16:1. Other information. Website. www .prosper-isd .net. Prosper Independent School District ( PISD or Prosper ISD) is a public school district based in Prosper, Texas, United States. Located in Collin County, a portion of the district extends into Denton County . The district enrollment was 28,118 as of the 2023-24 ...
edit. Selenium ( 34 Se) has six natural isotopes that occur in significant quantities, along with the trace isotope 79 Se, which occurs in minute quantities in uranium ores. Five of these isotopes are stable: 74 Se, 76 Se, 77 Se, 78 Se, and 80 Se. The last three also occur as fission products, along with 79 Se, which has a half-life of 327,000 ...
Hydrogen selenide is an inorganic compound with the formula H 2 Se. This hydrogen chalcogenide is the simplest and most commonly encountered hydride of selenium. H 2 Se is a colorless, flammable gas under standard conditions. It is the most toxic selenium compound [3] with an exposure limit of 0.05 ppm over an 8-hour period.