Now showing items 26731-26740 of 26771
Proton Precipitation in Mercury’s Northern Magnetospheric Cusp
(Wiley Periodicals, Inc.University of Michigan, 2022-11)
Ion precipitation onto Mercury’s surface through its magnetospheric cusps acts as a source of planetary atoms to both Mercury’s exosphere and magnetosphere. Through the process of ion sputtering, solar wind ions (∼95% ...
Photochemical C(sp2)−H Pyridination via Arene–Pyridinium Electron Donor–Acceptor Complexes
(Wiley Periodicals, Inc., 2022-11-14)
This report describes the development of a photochemical method for C(sp2)−H pyridination that leverages the photoexcitation of electron donor–acceptor (EDA) complexes. Experimental and DFT studies show that black light ...
Effect of Nanoscale Confinement on Ultrafast Dynamics of Singlet Fission in TIPS-Pentacene
(WILEY-VCH, 2022-11-18)
Singlet fission (SF) is a phenomenon for the generation of a pair of triplet excitons from anexcited molecule in singlet electronic state interacting with another adjacent molecule in its ground electronic state. By ...
Exploring the secondary mineral products generated by microbial iron respiration in Archean ocean simulations
(ElsevierWiley Periodicals, Inc., 2022-11)
Marine chemical sedimentary deposits known as Banded Iron Formations (BIFs) archive Archean ocean chemistry and, potentially, signs of ancient microbial life. BIFs contain a diversity of iron- and silica-rich minerals in ...
Predictors and consequences of gestation length in wild chimpanzees
(John Wiley & Sons, Inc., 2022-11)
ObjectivesEnergetics are widely recognized to influence timing of birth in humans and other eutherian mammals, yet considerable variation exists in the relationship between energetic constraints and gestation length. In ...
Acoustics Reveals Short-Term Air Temperature Fluctuations Near Mars’ Surface
(ESAC MadridWiley Periodicals, Inc., 2022-11-16)
Acoustics is new on Mars: it allows the characterization of turbulence at smaller scales than previously possible within the lowest part of the Planetary Boundary Layer. Sound speed measurements, by the SuperCam instrument ...
Watching Excited State Dynamics with Optical and X-ray Probes: The Excited State Dynamics of Aquocobalamin and Hydroxocobalamin
(American Chemical Society, 2023-06-16)
Femtosecond time-resolved X-ray absorption (XANES) at the Co K-edge, X-ray emission (XES) in the Co Kβ and valence-to-core regions, and broadband UV–vis transient absorption are combined to probe the femtosecond to picosecond ...
Global Barotropic Tide Modeling Using Inline Self-Attraction and Loading in MPAS-Ocean
(Graduate School of Oceanography, University of Rhode IslandWiley Periodicals, Inc., 2022-11)
We examine ocean tides in the barotropic version of the Model for Prediction Across Scales (MPAS-Ocean), the ocean component of the Department of Energy Earth system model. We focus on four factors that affect tidal accuracy: ...
The Helicity Sign of Flux Transfer Event Flux Ropes and Its Relationship to the Guide Field and Hall Physics in Magnetic Reconnection at the Magnetopause
(American Geophysical Union (AGU)Wiley Periodicals, Inc., 2022-11)
Flux Transfer Events (FTEs) are transient magnetic flux ropes typically found at the Earth’s magnetopause on the dayside. While it is known that FTEs are generated by magnetic reconnection, it remains unclear how the details ...
Unique Dimerization Topology and Countercation Binding Modes in 12-Metallacrown-4 Compounds
(Wiley-VCH Verlap & Co. KGaA, 2022-11-17)
Seven dimeric metallacrowns (MC) based on Ln[12-MCM(III)N(shi)-4], where LnIII=Dy, Ho, Yb, or Y, MIII=Mn or Ga, and shi3− is salicylhydroximate, have been synthesized and characterized by single-crystal X-ray diffraction, ...