Results 121 to 130 of about 1,179,358 (368)

High-Resolution Spectroscopy of Cool Carbon-Rich and Metal-Poor Star HD 209621

Open Astronomy, 2012
Element abundances for HD 209621 obtained earlier display significant discrepancies, especially in the case of CNO and neutron-capture elements. Therefore we performed a detailed analysis of chemical composition of this star using a new high-resolution ...
Matrozis E., Začs L., Barzdis A.
doaj   +1 more source

Disordered Rocksalts as High‐Energy and Earth‐Abundant Li‐Ion Cathodes

Advanced Materials, EarlyView.
Disordered rocksalts with lithium excess (DRX) offer a new direction in Li‐ion cathode design beyond conventional Ni‐ and Co‐based materials. This review highlights the design principles, synthesis strategies, and performance optimization of DRX oxides and oxyfluorides for energy‐dense, sustainable batteries using Earth‐abundant transition metals and ...
Han‐Ming Hau, Tucker Holstun, Eunryeol Lee, Bernardine L. D. Rinkel, Tara P. Mishra, Max Markuson DiPrince, Rohith Srinivaas Mohanakrishnan, Ethan C. Self, Kristin A. Persson, Bryan D. McCloskey, Gerbrand Ceder   +10 more
wiley   +1 more source

HDO Ice Detected toward an Isolated Low-mass Protostar with JWST

The Astrophysical Journal Letters
Water is detected in environments representing every stage of star and solar system formation, but its chemical evolution throughout these stages remains poorly constrained.
Katerina Slavicinska, Łukasz Tychoniec, María Gabriela Navarro, Ewine F. van Dishoeck, John J. Tobin, Martijn L. van Gelder, Yuan Chen, A. C. Adwin Boogert, W. Blake Drechsler, Henrik Beuther, Alessio Caratti o Garatti, S. Thomas Megeath, Pamela Klaassen, Leslie W. Looney, Patrick J. Kavanagh, Nashanty G. C. Brunken, Patrick Sheehan, William J. Fischer   +17 more
doaj   +1 more source

Chemical Abundances in Field Red Giants from High-Resolution H-Band Spectra using the APOGEE Spectral Linelist

, 2012
High-resolution H-band spectra of five bright field K, M, and MS giants, obtained from the archives of the Kitt Peak National Observatory (KPNO) Fourier Transform Spectrometer (FTS), are analyzed to determine chemical abundances of 16 elements.
Bizyaev, Dmitry, Cunha, Katia, Holtzman, Jon, Johnson, Jennifer A., Majewski, Steven R., Meszaros, Szabolcs, Perez, Ana Garcia, Prieto, Carlos Allende, Schiavon, Ricardo, Shetrone, Matthew D., Smith, Verne V.   +10 more
core   +1 more source

Improvements in Mass Spectrometers for the Measurement of Small Differences in Isotope Abundance Ratios [PDF]

, 1950
C. R. McKinney, J. M. McCrea, Samuel Epstein, Harriet A. Allen, Harold C. Urey   +4 more
openalex   +1 more source

Chemoselective Characterization of New Extracellular Matrix Deposition in Bioengineered Tumor Tissues

Advanced Materials, EarlyView.
Understanding the bi‐directional crosstalk between cells and their surrounding extracellular matrix (ECM) is critical for tissue engineering. This study presents a chemoselective strategy for proteomic profiling of newly deposited ECM from resident cells.
Zihan Ling, Burke Niego, Qingyang Li, Dhruv Bhattaram, Vanessa Serna Villa, Michael Hu, Zhuowei Gong, Lloyd M. Smith, Brian L. Frey, Xi Ren   +9 more
wiley   +1 more source

Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211

, 2006
With the Plateau de Bure interferometer, we have measured the C, N, O and S isotopic abundance ratios in the arm of a spiral galaxy with a redshift of 0.89. The galaxy is seen face-on according to HST images. Its bulge intercepts the line of sight to the
Anders, Bensch, Cernicharo, Chengalur, Chin, Chin, Combes, Combes, Combes, F. Combes, Frerking, Frye, Guélin, Gérin, Harrison, Heikkilä, Henkel, Henkel, Henkel, Hirota, Jauncey, Kahane, Kahane, Koopmans, Landré, Langer, Lidman, Lovell, Lovell, Lucas, Lucas, Lucas, M. Dumke, M. Guélin, Martín, Martín, Menten, Menten, Milam, Minh, Minh, Muller, Nair, Penzias, Penzias, Polehampton, Prantzos, R. Lucas, Roberts, S. Muller, Sage, Shah, Spergel, Subrahmanyan, Swift, van Ommen, Wang, Wiklind, Wiklind, Wiklind, Wiklind, Wilson, Wilson, Winn, Wouterloot   +64 more
core   +3 more sources

The Isotopic Constitution of Igneous Sulphur and the Primordial Abundance of the Terrestrial Sulphur Isotopes [PDF]

, 1952
J. Macnamara, W. H. Fleming, Andrea Szabó, H. G. Thode   +3 more
openalex   +1 more source

Biphasic Ni‐MXene Quantum‐Confined Nanostructures: A Versatile Janus Platform for Advanced Energy Storage and Catalytic Oxidations

Advanced Materials, EarlyView.
A biphasic Ni‐MXene quantum‐confined nanostructure (Ni‐MJQD) serves as a Janus platform, simultaneously achieving high‐performance energy storage and efficient catalytic oxidation. The unique architecture enables superior energy storage performance and selective benzyl alcohol oxidation‐symbolizing “one stone, two birds” for sustainable energy and ...
Lagnamayee Mohapatra, Subir Kumar Pati, Dhananjaya Patra, Kyung‐Hwan Jin, Sungjune Park, Seung Hwa Yoo   +5 more
wiley   +1 more source

An ALMA Study of Molecular Complexity in the Hot Core G336.99-00.03 MM1

The Astrophysical Journal
High-mass star formation involves complex processes, with the hot core phase playing a crucial role in chemical enrichment and the formation of complex organic molecules. However, molecular inventories in hot cores remain limited.
Chunguo Duan, Qian Gou, Tie Liu, Fengwei Xu, Xuefang Xu, Junlin Lan, Ke Wang, Laurent Pagani, Donghui Quan, Junzhi Wang, Xunchuan Liu, Mingwei He   +11 more
doaj   +1 more source