Results 171 to 180 of about 5,119,857 (297)

Author Correction: Satellite megaconstellations will threaten space-based astronomy. [PDF]

Nature
Borlaff AS, Marcum PM, Howell SB.
europepmc   +1 more source

The Age of Questions: Truth Regimes and Subjectivity in the Era of Large Language Models

Behavioral Sciences &the Law, EarlyView.
ABSTRACT This essay explores how digital technologies shape subjectivity's infra‐political constitution, focusing on large language models (LLMs) like ChatGPT or Gemini within what philosophers, inspired by Michel Foucault, term the “digital truth regime.” After defining this regime, the essay identifies five key traits of LLMs: presentism in truth ...
Charles Corval
wiley   +1 more source

The Super L An Exploratory Framework for Visualising Long-Term Astronomical and Geological Cycles

  This paper presents the Super L, an exploratory framework developed through investigation of long-term astronomical cycles, galactic motion and deep time. Beginning with historical questions surrounding the Black Death and medieval observations of the sky, the work expands into an examination of Earth's 41,000-year obliquity cycle, the 26,000 ...
  +8 more sources

Reversible Cystine Disulfide Scaffolding Enables Carbonyl Sulfide‐Mediated Intramolecular Peptide Bond Formation via Cyclocystine: Implications for Prebiotic Chemistry

Chemistry – A European Journal, EarlyView.
Cystine is unique among amino acids, in that the disulfide bond can allow intramolecular peptide bond formation. This cyclization offers potential advantages for intramolecular coupling selectivity in prebiotic peptide formation. ABSTRACT Treatment of cystine (the disulfide‐linked dimer of cysteine) with carbonyl sulfide (COS) results in the formation ...
Avinash Vicholous Dass, Arthur Srayeddin, Anthony Rullo, Jonathan Stone, Maikel Rheinstadter, Paul Harrison   +5 more
wiley   +1 more source

Cryogenic Characterisation of a Commercial Low-Noise Amplifier (LNA) for MKID Readout Systems. [PDF]

Sensors (Basel)
Santos-Verzilli DE, Portero-Rodríguez D, García-Vázquez H, Rodríguez Ramos JM, Rodríguez Ramos LF.   +4 more
europepmc   +1 more source

X‐Ray Absorption Sensitivity at 5d$5d$ Edges of High‐Valent Light Actinides to Crystal‐Field Strength and Covalency Effects

Chemistry – A European Journal, EarlyView.
Analysis of x‐ray absorption spectra of U(VI) and U(V) oxides indicates an important role of U 5f−O$5f-\rm{O}$ 2p$2p$ charge transfer for increasing the 5f$5f$ occupancy and thereby affecting the ground state properties. ABSTRACT The 5f$5f$ states were probed in ThO2$\rm{ThO}_2$ and U(VI) and U(V) oxides using x‐ray absorption spectroscopy at the ...
Johan R. Vegelius, David K. Shuh, Sergei M. Butorin   +2 more
wiley   +1 more source

Metasurface-enabled astronomical polarimetry. [PDF]

Sci Adv
Li LW, Oakley PHH, Schindhelm RN, Sellers SG, Casini R, Rubin NA.   +5 more
europepmc   +1 more source

Long-term analysis of clear sky at astronomical sites: a comparison between polar and geostationary satellites [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
CAVAZZANI, STEFANO, Zitelli, V., ORTOLANI, SERGIO   +2 more
openaire   +1 more source

Frederick Barnard's astronomical clock

Frederick Barnard's astronomical clock in the Astronomical Observatory on campus around ...
The University of Alabama
core  

Exploring the Synthesis of Metalloporphyrin Equipped Pd12L24 Supramolecular Spheres

Chemistry – A European Journal, EarlyView.
We expand the scope of Pd12L24 nanospheres equipped with porphyrins. Focusing on the porphyrin metallation state, synthetic strategies for porphyrin building block (BB)compounds are developed. The compounds are evaluated against nanosphere self‐assembly conditions.
Tom Keijer, Eduard O. Bobylev, Robert L.C. Voeten, Felix J. de Zwart, Simon Mathew, Vladimir Grigorescu, Charusheela Ramanan, Anouk M. Rijs, Joost N.H. Reek   +8 more
wiley   +1 more source