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  1. Calcium carbonate is the active ingredient in agricultural lime and is produced when calcium ions in hard water react with carbonate ions to form limescale. It has medical use as a calcium supplement or as an antacid, but excessive consumption can be hazardous and cause hypercalcemia and digestive issues.

  2. en.wikipedia.org › wiki › ParacetamolParacetamol - Wikipedia

    Paracetamol (acetaminophen[a]) is a non-opioid analgesic and antipyretic agent used to treat fever and mild to moderate pain.[13][14][15] It is a widely used over the counter medication. Common brand names include Tylenol and Panadol. At a standard dose, paracetamol only slightly reduces fever;[14][16][17] it is inferior to ibuprofen in that ...

  3. en.wikipedia.org › wiki › ProteinProtein - Wikipedia

    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 ...

    • Uses
    • Health Effects
    • Available Forms and Nomenclature
    • Production
    • Safety
    • See Also

    Medical uses

    1. Pharmaceutical-grade PEG is used as an excipientin many pharmaceutical products, in oral, topical, and parenteral dosage forms. 2. PEG is the basis of a number of laxatives (as MiraLax, RestoraLAX, etc.). Whole bowel irrigation with polyethylene glycol and added electrolytes is used for bowel preparation before surgery or colonoscopy or for children with constipation. Macrogol (with brand names such as Laxido, Movicol and Miralax) is the generic name for polyethylene glycol used as a laxat...

    Chemical uses

    1. Polyethylene glycol is also commonly used as a polar stationary phase for gas chromatography, as well as a heat transfer fluidin electronic testers. 2. PEG is frequently used to preserve waterlogged wood and other organic artifacts that have been salvaged from underwater archaeological contexts, as was the case with the warship Vasa in Stockholm, and similar cases. It replaces water in wooden objects, making the wood dimensionally stable and preventing warping or shrinking of the wood when...

    Biological uses

    1. An example study was done using PEG-diacrylate hydrogels to recreate vascular environments with the encapsulation of endothelial cells and macrophages. This model furthered vascular disease modeling and isolated macrophage phenotype's effect on blood vessels. 2. PEG is commonly used as a crowding agent in in vitro assays to mimic highly crowded cellular conditions. Although polyethylene glycol is considered biologically inert, it can form non-covalent complexes with monovalent cations such...

    PEG is considered biologically inert and safe by the U.S. FDA. However, a growing body of evidence shows the existence of a detectable level of anti-PEG antibodies in approximately 72% of the population, never treated with PEGylated drugs, based on plasma samples from 1990 to 1999.[further explanation needed] Due to its ubiquity in a multitude of p...

    PEG, PEO, and POE refer to an oligomer or polymer of ethylene oxide. The three names are chemically synonymous, but historically PEG is preferred in the biomedical field, whereas PEO is more prevalent in the field of polymer chemistry. Because different applications require different polymer chain lengths, PEG has tended to refer to oligomers and p...

    The production of polyethylene glycol was first reported in 1859. Both A. V. Lourenço and Charles Adolphe Wurtz independently isolated products that were polyethylene glycols. Polyethylene glycol is produced by the interaction of ethylene oxide with water, ethylene glycol, or ethylene glycol oligomers. The reaction is catalyzed by acidic or basic c...

    PEO's have "very low singledose oral toxicity", on the order of tens of grams per kg body weight (oral). Because of its low toxicity, PEO is used in a variety of edible products.The polymer is used as a lubricating coating for various surfaces in aqueous and non-aqueous environments. The precursor to PEGs is ethylene oxide, which is hazardous. Ethy...

  4. en.wikipedia.org › wiki › ViscosityViscosity - Wikipedia

    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.

  5. en.wikipedia.org › wiki › VeganismVeganism - Wikipedia

    Veganism is the practice of abstaining from the use of animal products —particularly in diet —and an associated philosophy that rejects the commodity status of animals. [c] A person who practices veganism is known as a vegan . The foundations of veganism include ethical, moral, environmental, health and humanitarian arguments.

  6. Website. sdgs .un .org. The 2030 Agenda for Sustainable Development, adopted by all United Nations members in 2015, created 17 world Sustainable Development Goals ( SDGs ). They were created with the aim of " peace and prosperity for people and the planet..." [1] [2] [3] – while tackling climate change and working to preserve oceans and forests.

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