Results 191 to 200 of about 3,259 (256)

Direct observation of the Migdal effect induced by neutron bombardment. [PDF]

Nature
Yi D, Liu Q, Chen S, Dong C, Feng H, Gao C, Huang W, Jing X, Kong L, Li J, Li P, Liang E, Ma R, Su C, Su L, Sun J, Wang D, Wang J, Wei Z, Yao Z, Yu Y, Zhang Y, Zhou S, Zhou Z, Zhu B, Zuo J, Liu H, Sun X, Wu L, Zheng Y.   +29 more
europepmc   +1 more source

The Structure of Spinels: A Quantitative Assessment of the AB2X4 Family

Journal of the American Ceramic Society, Volume 109, Issue 8, August 2026.
ABSTRACT Compounds with the general formula AB2X4 crystallize with the atomic structure of the mineral spinel, MgAl2O4, described by three degrees of freedom: lattice parameter a, anion parameter u, and cation inversion parameter λ. Here, bond valence sum validation of 1244 ambient structures (338 compositions, 1915–2025) from the Inorganic Crystal ...
Nik Reeves‐McLaren
wiley   +1 more source

Argon-based geochronology: advances, limitations and perspectives. [PDF]

Natl Sci Rev
Chang SC, Shi W, Wang Y, Wang F.
europepmc   +1 more source

Kinetic Insights Into Boron–Carbon Interaction Under Programmed Heating

Journal of the American Ceramic Society, Volume 109, Issue 8, August 2026.
This work demonstrates the decisive role of the heating rate and short‐term mechanical activation in governing the boron–carbon interaction. The combined effect of rapid heating and mechanical activation enables the 4B + C reaction to proceed at significantly lower temperatures. For the first time, the effective activation energy of the 4B + C reaction
Khachik Nazaretyan, Hasmik Kirakosyan, Larisa Abovyan, Sofiya Aydinyan, Suren Kharatyan   +4 more
wiley   +1 more source

Radiation exposure facilities for radiobiology in Europe: availability, capabilities, and limitations. [PDF]

Radiat Environ Biophys
Unterleiter T, Shariff M, Rückert M, Winterling L, Ruspeckhofer L, Weissmann T, Putz F, Fietkau R, Bert C, Gaipl US, Deloch L.   +10 more
europepmc   +1 more source

Effect of Oxide Filler Chemistry on Sintering and Phase Evolution of Polymer‐Derived SiC Composites

Journal of the American Ceramic Society, Volume 109, Issue 8, August 2026.
This study investigates pressureless sintering and phase evolution in polymer‐derived SiC–oxide composites containing Y2Si2O₇ or Gd2Zr2O₇ fillers. The results show that oxide filler chemistry governs apparent densification, phase stability, and local microstructure, with Y2Si2O₇ behaving primarily as a passive filler and Gd2Zr2O₇ promoting reaction ...
Reilly Boros, Siddhartha Sarkar, Hai Xiao, Anand Kulkarni, Dongsheng Li, Rajendra K. Bordia, Fei Peng   +6 more
wiley   +1 more source

Advanced Nuclear Energy Pathways for a Net-Zero World: Fuel Cycles, Reactors, and Policy Readiness. [PDF]

Glob Chall
Haggam RA, Jayabal R, S S, Ayyar M, Soudagar MEM, M S, Rajendran S, D S, Sivanraju R.   +8 more
europepmc   +1 more source

Thermal histories of El Médano 300 (EM 300) and Northwest Africa 8155 (NWA 8155): Implications for the diversity of IAB‐ungrouped iron meteorites and their parent bodies

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1763-1787, August 2026.
Abstract This study provides the first petrographic, crystallographic, and chemical comparison between El Médano 300 (EM 300) and Northwest Africa 8155 (NWA 8155), two particular IAB‐ungrouped iron meteorites. Both contain exceptionally large graphite nodules and “flowers”, providing unique insights into carbon behavior in metallic melts and cooling ...
L. Perez, M. Roskosz, F. Danoix, L. Kern, V. Megevand, C. Brillatz, B. Devouard, J. Gattacceca, M. Gounelle   +8 more
wiley   +1 more source

²¹⁰Pb and ¹³⁷Cs dating models as tracers of recent sedimentary processes of the shallow lake under anthropogenic activity. [PDF]

Sci Rep
Imam N, Ghanem A, Nada A, Abu-Zeid H, Shetaia SA, Madcour WE.   +5 more
europepmc   +1 more source

The Ames impact structure, Oklahoma: New radioisotopic constraints and implications for North American impact chronology

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 2103-2139, August 2026.
Abstract The Ames impact structure (Oklahoma) is thought to have formed during the Ordovician Meteor Event, based on conodont biostratigraphy of its crater fill. Here, U–Pb zircon dates from its impact‐melt portion, conducted using secondary ion mass spectrometry and laser ablation–inductively coupled plasma–mass spectrometry (n = 37 spots), yield a ...
Elizabeth J. Catlos, Andrew F. Parisi, Michael E. Brookfield, Timmons Erickson, Sean P.S. Gulick, Axel K. Schmitt, Daniel F. Stockli, Daniel P. Miggins, Ben Ruchte, Mark Cloos   +9 more
wiley   +1 more source