Results 191 to 200 of about 116,906 (304)

Results of Meridian‐Observations of the Minor Planets made at the Cambridge Observatory in the years 1855, 1856, 1857 and 1858 [PDF]

J. Challis
openalex   +1 more source

Annulated Radical Cations with a C4E2‐Core (E = P, As, Sb): Stable Pnictogen Analogs of Elusive Aryl Radical Anions of Birch Reduction Reactions

Angewandte Chemie International Edition, Accepted Article.
The benzene radical anion (C6H6)●–, possessing a 7π‐electron count, is a crucial intermediate in the Birch reduction and has been extensively studied both experimentally and theoretically. Herein, we report the tricyclic pnictogen radical cations [(ADC)E]2[B], [2‐E][B] (ADC = PhC{N(Dipp)C}2; Dipp = 2,6‐iPr2C6H3; E = P, As, Sb; [B] = [B1] = B(C6F5)4 or [
Henric Steffenfauseweh, Yury V. Vishnevskiy, Beate Neumann, Hans-Georg Stammler Stammler, Demi Snabilié, Bas de de Bruin, Rajendra Ghadwal   +6 more
wiley   +1 more source

Labile Base‐Stabilized Silyliumylidene Ions. Non‐Metallic Species Capable of Activating Multiple Small Molecules

Chemistry – A European Journal, Volume 28, Issue 70, December 15, 2022., 2022
Various base‐stabilized silyliumylidene ions with different ligands were synthesized. Their behaviour appeared strongly dependent on the type of ligand. Indeed, in contrast to the poorly reactive silyliumylidenes stabilized by strongly donating ligands (DMAP, NHC), the sulfide‐supported one (SMe2) exhibits higher reactivity toward various small ...
Raphaël Nougué, Shintaro Takahashi, Aymeric Dajnak, Eddy Maerten, Antoine Baceiredo, Nathalie Saffon‐Merceron, Vicenç Branchadell, Tsuyoshi Kato   +7 more
wiley   +1 more source

Optimizing photosynthetic light-harvesting under stars: simple and general antenna models. [PDF]

Photosynth Res
Chitnavis S, Gray C, Rousouli I, Gillen E, Mullineaux CW, Haworth TJ, Duffy CDP.   +6 more
europepmc   +1 more source

The Naming of the Minor Planet No. 907, Barnardiana [PDF]

, 1922
E. E. Barnard
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Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

Chemie Ingenieur Technik, EarlyView., 2023
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source

Two distinct current systems in the ionosphere of Mars. [PDF]

Nat Commun
Gao J, Li S, Mittelholz A, Rong Z, Persson M, Shi Z, Lu H, Zhang C, Wang X, Dong C, Klinger L, Cui J, Wei Y, Pan Y.   +13 more
europepmc   +1 more source

CHES: An astrometry mission searching for nearby habitable planets. [PDF]

Innovation (Camb), 2022
Ji J, Wang S, Li H, Fang L, Li D.
europepmc   +1 more source

Discovery of a new Minor Planet, Niobe 71 [PDF]

openalex   +1 more source

Comparing cranial biomechanics between Barbourofelis fricki and Smilodon fatalis: Is there a universal killing‐bite among saber‐toothed predators?

The Anatomical Record, EarlyView.
Abstract Saber‐tooths, extinct apex predators with long and blade‐like upper canines, have appeared iteratively at least five times in the evolutionary history of vertebrates. Although saber‐tooths exhibit a relatively diverse range of morphologies, it is widely accepted that all killed their prey using the same predatory behavior. In this study, we CT‐
Borja Figueirido, Shane Tucker, Stephan Lautenschlager   +2 more
wiley   +1 more source