A pyridinic Fe-N4 macrocycle models the active sites in Fe/N-doped carbon electrocatalysts
Nature Communications, 2020 Iron- and nitrogen-doped carbon (Fe-N-C) materials are leading candidates to replace platinum catalysts for the oxygen reduction reaction (ORR) in fuel cells; however, their active site structures remain poorly understood. A leading postulate is that the
Travis Marshall-Roth +8 more
semanticscholar +1 more source
Jurnal Teknologi dan Industri Pangan, 2021 Prolonged physical exercise has the risk of increasing free radicals which will affect the breakdown of red blood cells and promote the risk of decreased hemoglobin.
Mirza Hapsari Sakti Titis Penggalih +4 more
doaj +1 more source
First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy [PDF]
, 2003 In the framework of an ESO Large Programme high quality spectra of 70 very metal-poor dwarfs and giants were obtained with the VLT-UVES combination. This paper reports the detailed analyses of the 35 giants of the sample.
Abel +77 more
core +2 more sources
Reason or faith: a discussion about the pantheism controversy
Revista de Filosofia, 2017 Firstly, this article will examine in the text of 1786, Was heisst: sich im Denken orientieren?, the chaining of the argumentation used by Kant to reply to the critique arised during the pantheism controversy about the passage from the finite to the ...
Ivanilde Fracalossi
doaj +1 more source
Fe-Ni Sulphides as Indicators of Alteration in CM Chondrites [PDF]
, 2007 This study looks at the sulphide abundance and composition of Fe-Ni sulphide grains in 12 CM chondrites to determine an alteration sequence for these ...
Bullock, E. S. +3 more
core
Chemical Evolution of the Galactic Bulge as Derived from High-Resolution Infrared Spectroscopy of K and M Red Giants [PDF]
, 2006 We present chemical abundances in K and M red-giant members of the Galactic bulge derived from high-resolution infrared spectra obtained with the Phoenix spectrograph on Gemini-South.
Bessel M. S. +10 more
core +3 more sources
Mapping the evolution of mitochondrial complex I through structural variation
FEBS Letters, EarlyView.Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin +2 more
wiley +1 more source
Study on the Factors Influencing the Separation of Sr and Nd in Sediments by Ion Exchange Resin
Yankuang ceshi, 2018 BACKGROUND In geological studies, Sr and Nd isotopes are classical isotopic dating and tracer systems. OBJECTIVES The traditional separation method usually uses the AG50W-X8 resin to elute and separate Sr and REEs in sediments, and then uses Sr-special ...
YIN Peng +3 more
doaj +1 more source
Fe-Ni Sulphides within a CM1 clast in Tagish Lake [PDF]
, 2005 The composition, abundance and mineral associations of Fe-Ni sulphides within a CM1 clast in Tagish Lake are described, and compared with Fe-Ni sulphides in the carbonate-rich and carbonate-poor lithology of Tagish Lake, as well as Fe-Ni sulphides from ...
Bullock, E. S. +3 more
core
Temperature-Dependence of Magnetically-Active Charge Excitations in Magnetite across the Verwey Transition [PDF]
, 2015 We have studied the electronic structure of bulk single crystals and epitaxial films of magnetite Fe$_3$O$_4$. Fe $2p$ core-level spectra show clear differences between hard x-ray (HAX-) and soft x-ray (SX-) photoemission spectroscopy (PES), indicative ...
Chainani, A. +18 more
core +2 more sources