Results 161 to 170 of about 7,350 (241)

Strength α‐Quartz: New Results From High Pressure In Situ X‐Ray Diffraction Experiments

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract We present a suite of 13 uniaxial deformation experiments on fine grained polycrystalline α‐quartz conducted in a D‐DIA apparatus monitored with in situ synchrotron x‐rays. Experimental temperatures range from 25°C to 1199°C with pressures between 1.4 and 3.2 GPa, and strain rates between 3.4 × 10−6 s−1 and 1.8 × 10−5 s−1.
D. A. Jivanjee Medina, S. Kaboli, B. M. Patterson, P. C. Burnley   +3 more
wiley   +1 more source

Sound Velocities and Structural Transitions of Endmember and Fe, Al, Mg, Ti‐Bearing CaSiO3 Glasses Up to 23 GPa

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract The study of silicate glasses is important to understand the physical and chemical properties of silicate melts under high‐pressure conditions relevant to planetary interiors. We conducted in situ Brillouin spectroscopy measurements on two endmember, low‐impurity CaSiO3 glasses and one Fe, Al, Mg, Ti‐bearing CaSiO3 glass up to 23 GPa.
Wenhao Su, Wen‐Yi Zhou, Jiasen Hu, Ming Hao, Anne Pommier, Jin S. Zhang   +5 more
wiley   +1 more source

How Convective Mass Flux Responds to Environmental Humidity

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 2, February 2026.
Abstract Our goal in this study is to characterize the relationship between lower tropospheric environmental humidity and convective mass flux in the tropics. To do so, we have created gridded convective mass flux data sets from five global storm‐resolving models (GSRMs). We have three principal findings.
Seth D. Seidel, Nathan P. Arnold, Brandon Wolding   +2 more
wiley   +1 more source

Ossification of Incus to Tegmen [PDF]

Proceedings of the Royal Society of Medicine, 1923
openaire   +2 more sources

Machine learning approaches for crystallographic classification from synthetic 2D X‐ray diffraction data

Journal of Applied Crystallography, Volume 59, Issue 1, Page 206-224, February 2026.
This study introduces the novel Auto Diffraction Pipeline to generate large‐scale synthetic 2D X‐ray diffraction datasets from crystallographic information files. By training convolutional neural networks on these diverse datasets, the authors achieve rapid and automated classification across all seven crystal systems and 230 space groups ...
Ayoub Shahnazari, Zeliang Zhang, Sachith E. Dissanayake, Chenliang Xu, Niaz Abdolrahim   +4 more
wiley   +1 more source

Estimating Aggregate Relationships in Panel Data via the LASSO

Oxford Bulletin of Economics and Statistics, Volume 88, Issue 1, Page 22-35, February 2026.
ABSTRACT This article is concerned with the estimation of aggregate relationships among a potentially large number of panel data variables in the presence of unobserved heterogeneity in the form of interactive effects, an empirically very relevant scenario that has not been considered before.
Joakim Westerlund, Luca Margaritella
wiley   +1 more source

FIRST EVIDENCE OF LOST‐WAX CASTING IN THE EARLIER BRONZE AGE OF SOUTH‐EASTERN SPAIN: THE SILVER BANGLE FROM EL ARGAR, GRAVE 292

Oxford Journal of Archaeology, Volume 45, Issue 1, Page 50-67, February 2026.
Summary In 1884, one of the burials discovered at El Argar, the eponymous site of the El Argar culture, revealed the remains of a woman wearing an unusual silver bangle. This ornament appears to be the first evidence of a silver object produced by lost‐wax casting in Bronze Age Iberia and, to date, in Western Europe.
Linda Boutoille
wiley   +1 more source

From Methane to Nanodiamond Precursors in Water: Superacid‐like Condensation Pathways Under Extreme Conditions

Angewandte Chemie, Volume 138, Issue 3, 16 January 2026.
Under extreme pressure and temperature, superionic water acts as a strong superacid, catalyzing methane polycondensation through pentacoordinated carbonium ions (CH5+). This discovery reveals the non‐classical carbocation chemistry underlying the early stages of diamond formation in water under extreme conditions.
Thomas Thévenet, Axel Dian, Matteo Cioni, Alexis Markovits, Sandro Scandolo, Arthur France‐Lanord, Flavio Siro Brigiano   +6 more
wiley   +2 more sources

Possible Peierls Distortion Through Re2 Dimer Formation in the LaNiO2‐Type Nitrides LnReN2 (Ln = Pr, Nd)

Angewandte Chemie International Edition, Volume 65, Issue 5, 28 January 2026.
This study presents the high‐pressure synthesis of two new anion‐vacancy‐ordered perovskite‐related nitrides, PrReN2 and NdReN2, featuring distorted LaNiO2‐type structures. X‐ray and neutron diffraction reveal a structural distortion driven by dimerization of Re‐chains, while electronic structure calculations reveal the simultaneous presence of ...
Dominik Werhahn, Amalina T. Buda, Simon Steinberg, Pascal Manuel, Clemens Ritter, J. Paul Attfield, Simon D. Kloß   +6 more
wiley   +1 more source

Davemaoite Elasticity Reveals Slab‐Induced Heterogeneity in the Mantle Transition Zone

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The observed 2%–7% low‐shear velocity (VS) anomalies near the subducted slab at the bottom mantle transition zone (MTZ) indicate strong lateral heterogeneity, which is commonly attributed to subducted oceanic crust. However, davemaoite, a major constituent of the subducted oceanic crust, has been poorly constrained in its elasticity, hindering
Yingxin Yu, Xinyue Zhang, Dongzhou Zhang, Luo Li, Zhu Mao, Ningyu Sun, Denglei Wang, Jing Li, Chaoshuai Zhao, Cheng Qian, Yingzhan Wei, Xinyang Li, Yuzhu Wang, Takayuki Ishii   +13 more
wiley   +1 more source