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  2. Median lethal dose - Wikipedia

    en.wikipedia.org/wiki/Median_lethal_dose

    Median lethal dose. In toxicology, the median lethal dose, LD50 (abbreviation for " lethal dose, 50%"), LC50 (lethal concentration, 50%) or LCt50 is a toxic unit that measures the lethal dose of a given substance. [1] The value of LD 50 for a substance is the dose required to kill half the members of a tested population after a specified test ...

  3. Parts-per notation - Wikipedia

    en.wikipedia.org/wiki/Parts-per_notation

    In science and engineering, the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction. Since these fractions are quantity-per-quantity measures, they are pure numbers with no associated units of measurement. Commonly used are parts-per-million (ppm, 10 ...

  4. Batis maritima - Wikipedia

    en.wikipedia.org/wiki/Batis_maritima

    Batis californica Torr. Batis maritima, the saltwort or beachwort (also known as turtleweed, pickleweed, barilla, planta de sal, camphire, herbe-à-crâbes, and akulikuli-kai[2]), is a halophyte. It is a C3 -plant, long-lived perennial, dioecious, succulent shrub. The plant forms dense colonies in salt marshes, brackish marshes, and mangrove ...

  5. Potassium perchlorate - Wikipedia

    en.wikipedia.org/wiki/Potassium_perchlorate

    Prophylaxis with perchlorate-containing water at concentrations of 17 ppm, corresponding to 0.5 mg/(kg·d) intake for a person of 70 kg consuming 2 litres of water per day, was found to reduce the baseline of radioiodine uptake by 67% [10] This is equivalent to ingesting a total of just 35 mg of perchlorate ions per day. In another related ...

  6. Galactose - Wikipedia

    en.wikipedia.org/wiki/Galactose

    Galactose (/ ɡəˈlæktoʊs /, galacto- + -ose, "milk sugar"), sometimes abbreviated Gal, is a monosaccharide sugar that is about as sweet as glucose, and about 65% as sweet as sucrose. [2] It is an aldohexose and a C-4 epimer of glucose. [3] A galactose molecule linked with a glucose molecule forms a lactose molecule.

  7. Sucrose - Wikipedia

    en.wikipedia.org/wiki/Sucrose

    Sucrose, a disaccharide, is a sugar composed of glucose and fructose subunits. It is produced naturally in plants and is the main constituent of white sugar. It has the molecular formula C. 12H. 22O. 11. For human consumption, sucrose is extracted and refined from either sugarcane or sugar beet.