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Alkali basalt
Alkali basalt is a fine-grained volcanic rock of basaltic silica content that is undersaturated in silica, defined by nepheline in its CIPW norm and typical of ocean-island and intraplate volcanism.
Alkali bee
Alkali bee (Nomia melanderi), a solitary ground-nesting halictid bee native to the western US and the world's only intensively managed ground-nesting bee, pollinating alfalfa seed from managed salty bee beds.
Alkali cation effect on oxygen electrocatalysis
The alkali cation effect on oxygen electrocatalysis is how alkali metal cations like Li⁺ and K⁺, though not reactants, change oxygen evolution and reduction reaction rates and pathways.
Alkali fusion
Alkali fusion is a sample-preparation method in analytical chemistry in which a powdered solid is heated with a molten alkali flux, such as sodium carbonate or lithium borate, to dissolve it.
Alkali metal
The alkali metals are the six group 1 elements, lithium through francium, soft, highly reactive metals that never occur free in nature and react violently with water.
Alkali metal peroxides
Alkali metal peroxides are ionic compounds of the group 1 metals containing the peroxide anion O₂²⁻, powerful oxidizers used to scrub carbon dioxide from air in submarines.
Alkali-activated slag
Alkali-activated slag (AAS) is a clinker-free cementitious binder made from ground blast-furnace slag and an alkaline activator, studied since 1930 and used in construction since 1960.
Alkali-metal suboxides
Alkali-metal suboxides are metal-rich oxides of rubidium and cesium, built from ionic Rb₉O₂ and Cs₁₁O₃ clusters in a metallic matrix and classified as metallic electrides.
Alkaline
Alkaline, born Earlan Bartley in Kingston, Jamaica, is a dancehall deejay who anchored trap dancehall in the mid-2010s and topped the Billboard Reggae chart with New Level Unlocked.
Alkaline battery
An alkaline battery is a non-rechargeable dry cell generating electricity from zinc oxidation and manganese dioxide reduction in a potassium hydroxide electrolyte, patented at Union Carbide in 1957.
Alkaline diet (alternative medicine)
Alkaline diet, also called acid-alkaline or alkaline ash diet: an alternative-medicine eating plan claiming alkaline foods shift body pH to prevent disease. Evidence shows diet cannot change blood pH and does not protect bones or prevent cancer.
Alkaline earth metal
The alkaline earth metals, also known as the alkaline earths or Group 2 elements, are beryllium, magnesium, calcium, strontium, barium, and radium, each losing its two valence electrons to form 2+ ions.
Alkaline earth metal peroxides
Alkaline earth metal peroxides are salts of the group 2 metals with formula XO2, stable for calcium, strontium, and barium; calcium peroxide releases oxygen slowly for remediation.
Alkaline fuel cell
The alkaline fuel cell (AFC) is a fuel cell that converts hydrogen and oxygen into electricity using a potassium hydroxide electrolyte, and powered Apollo and Space Shuttle spacecraft.
Alkaline hydrogen evolution reaction
The alkaline hydrogen evolution reaction is the electrocatalytic reduction of water to hydrogen in alkaline electrolyte, proceeding roughly 100 to 1,000 times slower than the same reaction in acid because water must first dissociate.
Alkaline hydrolysis (body disposition)
Alkaline hydrolysis, also known as water cremation, resomation, or aquamation, is a body disposition method that dissolves a body in a heated alkaline solution, leaving bone mineral.
Alkaline lysis
Alkaline lysis is a molecular biology method, introduced by Birnboim and Doly in 1979, that breaks open bacterial cells to release plasmid DNA separate from chromosomal DNA.
Alkaline phosphatase
Alkaline phosphatase (ALP, EC 3.1.3.1), also called ALK PHOS, is a zinc- and magnesium-dependent dimeric enzyme abundant in liver, bile ducts, and bone; its blood level is a key marker of hepatobiliary and skeletal disease.
Alkaline Trio
Alkaline Trio is an American punk rock band from Chicago, formed in 1996 and known for dark, macabre lyrics set against catchy pop-punk melodies led by Matt Skiba and Dan Andriano.
Alkaline water electrolysis
Alkaline water electrolysis is an electrochemical method that splits water into hydrogen and oxygen using a concentrated potassium hydroxide electrolyte, in industrial use for over a century.
Alkalinity
Alkalinity, also called total alkalinity, is the capacity of water to neutralize acid, arising mostly from bicarbonate and carbonate ions and measured by titration with acid.
Alkaliphilic archaea
Alkaliphilic archaea, also called haloalkaliphilic archaea such as Natrialba magadii and Haloarcula, are Euryarchaeota growing above pH 9 in soda lakes and hypersaline habitats, studied for pH homeostasis and stable alkaline enzymes.
Alkaloid
Alkaloid: nitrogen-containing natural products, mostly plant secondary metabolites with basic nitrogen, over 27,000 known structures; classified as true, proto, and pseudoalkaloids; include morphine, quinine, atropine, vincristine; first isolated as morphine by Sertürner in 1805.
Alkaloid (group)
Alkaloid is a German progressive and technical death metal band from Erlangen, Bavaria, formed by drummer Hannes Grossmann with composer Morean and known as a supergroup of metal veterans.
Alkami Technology
Alkami Technology is a Plano, Texas-based software company selling a cloud-based digital banking platform to US community banks and credit unions; it went public on Nasdaq in April 2021.
Alkane
Alkanes, also called paraffins from the Latin for "little affinity," are saturated hydrocarbons of formula CnH2n+2 with only single bonds, forming the simplest family of organic compounds and the main components of natural gas and gasoline.
Alkane borylation
Alkane borylation is a chemical reaction that replaces an alkane carbon-hydrogen bond with a carbon-boron bond, typically using bis(pinacolato)diboron under transition-metal catalysis to form alkylboronate esters.
Alkane functionalization
Alkane functionalization is the chemical conversion of alkanes, the inert saturated hydrocarbons making up most of crude oil and natural gas, into value-added products by activating C–H or C–C bonds.
Alkane metathesis
Alkane metathesis is a catalytic reaction that converts two molecules of an alkane into its lower and higher homologues, cleaving and re-forming C–H and C–C bonds at low temperature. First reported in 1997.
Alkane/xylene monooxygenase
Alkane/xylene monooxygenase (IPR033885) is a family of non-heme diiron membrane monooxygenases including AlkB and XylM, which oxidize alkanes and toluene/xylenes via histidine-ligated diiron centers and radical mechanisms.