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Attosecond nanoscopy
Attosecond nanoscopy is a set of experimental techniques that image light-driven electron dynamics in and around nanostructures with attosecond time and nanometre or finer spatial resolution, joining attosecond physics and nanoscale optics.
Attosecond photoemission from nanostructures
Attosecond photoemission from nanostructures measures, with sub-femtosecond resolution, electrons emitted by extreme ultraviolet light from nanometer-scale objects, and their acceleration in the plasmonically enhanced near fields the structures generate, founding attosecond nanophysics.
Attosecond photoemission spectroscopy
Attosecond photoemission spectroscopy is a time-resolved form of photoelectron spectroscopy that measures attosecond-scale delays between photon absorption and electron emission from atoms, molecules, liquids, and solid surfaces.
Attosecond photoionization microscopy
Attosecond photoionization microscopy images the electron current released when light ionizes an atom or molecule in an electric field, with time resolution on the attosecond scale.
Attosecond pulse
An attosecond pulse is a burst of light lasting attoseconds, generated by high-harmonic generation and first demonstrated in 2001, whose methods earned the 2023 Nobel Prize in Physics.
Attosecond pulse generation in the water window with CEP-stable OPCPA drivers
Attosecond pulse generation in the water window produces isolated soft X-ray pulses from 282 to 533 eV by driving high-order harmonic generation with CEP-stable mid-infrared OPCPA lasers.
Attosecond spectroscopy
Attosecond spectroscopy uses extreme-ultraviolet or X-ray pulses lasting attoseconds to observe electron motion in atoms, molecules, and solids; work in the field earned the 2023 Nobel Prize in Physics.
Attosecond streaking
Attosecond streaking is a pump-probe measurement technique in which an attosecond XUV pulse frees an electron and a near-infrared pulse shifts its momentum, encoding timing information in a streaking spectrogram.
Attosecond streaking of molecular dynamics
Attosecond streaking of molecular dynamics is a pump-probe technique using an attosecond XUV pulse to ionize a molecule and a delayed infrared pulse to map emission timing onto photoelectron momentum.
Attosecond streaking of surface plasmon fields in nanostructures
Attosecond streaking of surface plasmon fields in nanostructures is an ultrafast technique in which attosecond XUV pulses release electrons that encode plasmonic near-fields on metal nanostructures.
Attotude Inc.
Attotude Inc. is a private American technology company in Menlo Park, California, founded by Dave Welch and Joy Laskar to develop interconnect technology for AI and exascale data centers, raising about $140 million since 2024.
ATTR-ACT trial
ATTR-ACT (NCT01994889) was the pivotal phase 3 trial of tafamidis in transthyretin amyloid cardiomyopathy: 441 patients, 30 months, reduced mortality and cardiovascular hospitalizations, leading to FDA approval on May 3, 2019.
ATTRACT trial (NCT04944069)
ATTRACT (NCT04944069) is a prospective, open-label, single-arm Chinese trial of almonertinib 110 mg daily plus bevacizumab 15 mg/kg in 69 EGFR-mutant NSCLC patients with leptomeningeal metastasis, sponsored by Second Affiliated Hospital of Nanchang University; status unknown, no results posted.
Attractiepark Slagharen
Attractiepark Slagharen (Attractie- & Vakantiepark Slagharen) is a Wild West-themed Dutch amusement and holiday park in Overijssel, founded in 1963 as a Shetland pony park by Henk Bemboom, owned since 2012 by Parques Reunidos, with 30-plus attractions, Gold Rush, and Aqua Mexicana.
Attractin
Attractin (ATRN, DPPT-L, mahogany) is a human chromosome 20p13 gene encoding membrane and secreted glycoprotein isoforms involved in pigmentation, energy homeostasis, CNS myelination, and immune cell clustering.
Attraction to transgender people
Attraction to transgender people: romantic and sexual interest toward trans individuals and its social context. Key findings: cis men respond more negatively than cis women, mediated by transphobia; perceived deception, non-disclosure, fetishization, and relationship survival after transition are central research themes.
Attractor
An attractor, or dynamical attractor, is an invariant set of states in a dynamical system's phase space toward which nearby trajectories evolve; famous examples include the chaotic Lorenz attractor.
Attractor network
An attractor network, or attractor neural network, is a recurrent neural network whose dynamics settle into stable activity patterns called attractors, used to model memory and decision-making.
Attralus
Attralus, formerly Aurora Bio, Inc., is a California clinical-stage biopharmaceutical company whose lead candidate zamubafusp alfa won FDA Fast Track designation for AL amyloidosis in 2026.
Attribut
Attribut is a German party word game for 3 to 8 players by Marcel-André Casasola Merkle, published by Lookout Games in 2002 and on the Spiel des Jahres recommended list in 2003.
Attribute (role-playing games)
Attribute (RPG): broad innate character statistic (Strength, Intelligence, Dexterity, Constitution, Charisma) in tabletop and computer role-playing games, distinct from skills; D&D's six abilities, Fallout's S.P.E.C.I.A.L, and Skyrim's removal of attributes.
Attribute grammar
Attribute grammar: a context-free grammar extended with attributes and semantic rules, introduced by Knuth (1968, 'Semantics of Context-Free Languages'); synthesized and inherited attributes propagate values through parse trees for compiler semantics.
Attribute reduction (rough set theory)
Attribute reduction is a feature selection method from rough set theory that finds a minimal attribute subset, called a reduct, preserving the classification ability of the full attribute set.
Attribute-based access control
Attribute-based access control (ABAC), also called policy-based access control, is an access control model that grants access by evaluating attributes of the subject, object, and environment against policy rules.
ATTRibute-CM trial
ATTRibute-CM (AG10-301, NCT03860935) is the phase 3 trial of acoramidis in transthyretin amyloid cardiomyopathy: 632 patients, 2:1 vs placebo, 30 months, win ratio 1.8, basis of FDA approval of Attruby.
Attributes of God in Christianity
In Christian theology, the attributes of God are the qualities describing what God is in his essence, such as eternity, omnipotence, and holiness, distinct from God's names and actions.
Attribution (psychology)
Attribution (psychology): the process of assigning causes to behavior, from Heider's 1958 theory through Kelley's covariation model, Weiner's dimensions, and attribution biases such as the fundamental attribution error and self-serving bias.
Attribution analysis (climate science)
Attribution analysis in climate science is a statistical method that quantifies how much human activities and natural factors each contribute to observed climate changes and extreme events.
Attribution of recent climate change
Attribution of recent climate change, also called man-made global warming attribution, is the science of measuring how much observed warming is caused by human activities.
Attribution patching
Attribution patching is a gradient-based approximation to activation patching, a causal interpretability method, that estimates every component's effect at once using two forward passes and one backward pass instead of one per component.