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Ethylenediaminetetraacetic acid ( EDTA ), also called EDTA acid after its own abbreviation, is an aminopolycarboxylic acid with the formula [CH 2 N (CH 2 CO 2 H) 2] 2. This white, water-insoluble solid is widely used to bind to iron (Fe 2+ /Fe 3+) and calcium ions (Ca 2+ ), forming water-soluble complexes even at neutral pH.
A representation of the 3D structure of the protein myoglobin showing turquoise α-helices. This protein was the first to have its structure solved by X-ray crystallography. Toward the right-center among the coils, a prosthetic group called a heme group (shown in gray) with a bound oxygen molecule (red). Proteins are large biomolecules and ...
Viviparus georgianus, commonly known as the banded mystery snail, is a species of large freshwater snail in the family Viviparidae, the river snails. It is native to North America, generally found from the northeastern United States to Florida and the Gulf of Mexico, and thrives in eutrophic lentic environments such as lakes, ponds and some low ...
Nattō is 55% water, 13% carbohydrates, 19% protein, and 11% fat (table). In a 50 grams (1.8 ounces) serving, nattō supplies 110 calories and is a rich source (20% or more of the Daily Value, DV) of several dietary minerals, especially iron (33% DV) and manganese (73% DV), and vitamin K (542% DV). Nattō contains some B vitamins and vitamin C ...
Tramadol, sold under the brand name Ultram among others,[1] is an opioid pain medication and a serotonin–norepinephrine reuptake inhibitor (SNRI) used to treat moderately severe pain.[3][13] When taken by mouth in an immediate-release formulation, the onset of pain relief usually begins within an hour.[3] It is also available by injection ...
Ludwig van Beethoven [n 1] (baptised 17 December 1770 – 26 March 1827) was a German composer and pianist. He is one of the most revered figures in the history of Western music; his works rank among the most performed of the classical music repertoire and span the transition from the Classical period to the Romantic era in classical music.
t. e. The viscosity of a fluid is a measure of its resistance to deformation at a given rate. [1] For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. [2] Viscosity is defined scientifically as a force multiplied by a time divided by an area.
