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Amphoe Hat Yai
Amphoe Hat Yai (อำเภอหาดใหญ่), Hat Yai District of Songkhla Province, southern Thailand; 660 km² district around Hat Yai city, a railway junction founded 1909 and the south's commercial, educational, and transport hub, repeatedly hit by major floods.
Amphoe Khlong Luang
Amphoe Khlong Luang (คลองหลวง) is a district (amphoe) in Pathum Thani Province, central Thailand, north of Bangkok. It is named for a royal canal dug under King Rama V around 1905.
Amphoe Mueang Khon Kaen
Amphoe Mueang Khon Kaen (อำเภอเมืองขอนแก่น) is the central district of Khon Kaen province, Thailand, containing Khon Kaen city. Founded 1785, it covers 953.4 km² with 17 subdistricts and 415,594 registered residents (2020), the country's seventh most populous district.
Amphoe Mueang Nakhon Ratchasima
Amphoe Mueang Nakhon Ratchasima (อำเภอเมืองนครราชสีมา) is the capital district of Nakhon Ratchasima province, Thailand, containing Korat city, the Thao Suranari Monument, and Chumphon Gate.
Amphoe Mueang Samut Sakhon
Amphoe Mueang Samut Sakhon (อำเภอเมืองสมุทรสาคร), also Maha Chai, is the capital district of Samut Sakhon province, Thailand, on the Tha Chin River; 99,088 residents (2021), center of fishing, seafood processing, and salt farming.
Amphora
Amphora (Greek ἀμφορεύς): two-handled ancient Mediterranean ceramic jar for storing and transporting wine, oil, and other goods; also a capacity measure (Roman amphora two-thirds of the Greek), used from the Neolithic to after the Middle Ages.
Amphotericin B
Amphotericin B (AmB, Fungizone, AmBisome) is a polyene antifungal antibiotic from Streptomyces nodosus, licensed 1959, that binds fungal ergosterol; nephrotoxic deoxycholate form largely superseded by safer lipid formulations.
Amphoterism
Amphoterism, also called amphotericity, is the property of a chemical species that behaves both as an acid and as a base, such as water, amino acids, or aluminum oxide.
Ampicillin
Ampicillin, an aminopenicillin (aminopenicillins, β-lactam antibiotic), is a semisynthetic penicillin from 6-APA that inhibits cell wall synthesis via PBPs; inactivated by β-lactamases, it treats enterococcal, Listeria, and susceptible gram-negative infections.
Ampicillin resistant Haemophilus influenzae
Ampicillin resistant Haemophilus influenzae (BLNAR, BLPACR; ICD-11 MG50.30): strains resisting ampicillin via TEM-1 or ROB-1 β-lactamases or ftsI/PBP3 mutations, first reported 1972, WHO medium-priority pathogen.
Ample (company)
Ample was a San Francisco company, founded in 2014, whose modular battery-swapping stations charged electric vehicles in about five minutes; it filed for bankruptcy in December 2025.
Ample line bundle
An ample line bundle is a line bundle whose some positive tensor power is very ample, embedding the variety in projective space; it is the standard algebraic positivity notion.
Ampleforth College
Ampleforth College: independent Roman Catholic Benedictine co-educational boarding and day school in North Yorkshire, founded 1803, run by St Laurence Education Trust, ages 11-19, recent Ofsted 'Good' 2023.
Amplexus
Amplexus: the amphibian mating embrace in which a male clasps a female for fertilization, and separately Amplexus Sowerby 1814, an extinct rugose coral genus with type species A. coralloides.
Amplicon sequencing
Amplicon sequencing is a targeted DNA sequencing method in which PCR-amplified genomic loci are sequenced in depth, used for profiling microbial communities and detecting known or rare genetic variants.
Amplience
Amplience is a London-based commerce experience platform, founded in 2008 by James Brooke and Rory Dennis, providing headless content management and digital asset management software for retail.
Amplifi Capital
Amplifi Capital was a London-based consumer-credit fintech, incorporated in 2013, that ran the broker My Community Finance and lender Reevo Money before entering administration in June 2026.
Amplified fragment length polymorphism
Amplified fragment length polymorphism (AFLP), originally named selective restriction fragment amplification, is a DNA fingerprinting method that selectively amplifies restriction-digested DNA for genotyping and microbial typing.
Amplifier
An amplifier, also called an electronic amplifier, is a circuit that uses an external power supply to produce an output signal that is a larger replica of its input.
Amplifier (music)
"Amplifier" is a 2009 Punjabi pop song by the Netherlands-based Dutch-Pakistani singer Imran Khan, the first single from his debut album Unforgettable, which has passed one billion YouTube views.
Amplify Partners
Amplify Partners is a venture capital firm in Menlo Park, California, founded by Sunil Dhaliwal in 2012 to make concentrated early-stage investments in infrastructure, developer tools, data, AI, and cybersecurity software.
Amplify Trading
Amplify Trading, now operating as AmplifyME, is a London-based financial services company founded in 2009 by traders Will de Lucy and Piers Curran, which began as a proprietary trading firm and now runs finance career simulations.
Amplify-and-forward relaying
Amplify-and-forward (AF) relaying is a cooperative wireless technique in which a relay node retransmits a received signal after amplifying it, without decoding the message it carries.
AmplifyBio, LLC
AmplifyBio, LLC was a cell and gene therapy contract research and manufacturing organization in West Jefferson, Ohio, spun out of Battelle in 2021 and led by CEO J. Kelly Ganjei.
Amplitron
The amplitron, also known as the platinotron, is a crossed-field microwave amplifier tube derived from the magnetron, invented by William C. Brown at Raytheon in 1953.
Amplitude
Amplitude is the maximum change in the quantity that varies in a wave, measured from equilibrium, and one of four basic wave characteristics alongside wavelength, frequency, and speed.
Amplitude (Higgs) mode in superconductors
The amplitude (Higgs) mode in superconductors is a collective oscillation of the order parameter's magnitude, the condensed-matter analog of the Higgs boson, now probed by terahertz spectroscopy.
Amplitude amplification
Amplitude amplification is a quantum algorithmic technique, introduced by Brassard, Høyer, Mosca, and Tapp in 2000, that generalizes Grover's search algorithm and delivers a quadratic speedup over classical repetition.
Amplitude damping channel
The amplitude damping channel is a quantum channel modeling energy loss from a qubit to its environment, with the excited state decaying to the ground state with probability γ.
Amplitude Energy
Amplitude Energy Limited, formerly Cooper Energy Limited until its November 2024 renaming, is an Australian oil and gas producer supplying gas to Southeast Australia from the Otway and Gippsland basins.