Results 111 to 120 of about 74,370 (266)

High‐Performance Mn‐Based Hybrid Aqueous Batteries Enabled by Interlayer‐Expanded Magnesium Vanadium Bronze Cathode

Small, EarlyView.
This study demonstrates interlayer‐expanded MgV₆O₁₆·7H2O as a high‐performance cathode for manganese hybrid aqueous batteries, elucidating the dual Mn2⁺/H⁺ insertion mechanism through ex situ structural analysis, comprehensive XRD, XPS, FTIR, and Raman spectroscopy, as well as diffusion pathway calculations.
Hyeju Kwon, Sangki Lee, Jangwook Pyun, Yoo Sei Park, Junyoung Kwon, Munseok S. Chae   +5 more
wiley   +1 more source

Reduction, Softening, and Melting Characteristics of Mill Scale‐Based Briquettes for Blast Furnace Ironmaking

steel research international, EarlyView.
The study evaluates mill scale‐based briquettes, which meet industrial standards for shatter strength and exhibit a low decrepitation index. Despite their limited reducibility in nonisothermal reduction experiments, softening and melting results indicate potential application as a substitute for conventional acidic iron‐bearing materials for use in ...
Ismael Vemdrame Flores, Paula Maria Gomes Cunha Leão, João Victor Souza Alves, Otávio Henrique Matos de Assis, Maurício Covcevich Bagatini   +4 more
wiley   +1 more source

Production of arsenical bronze using speiss on the Elephantine Island (Aswan, Egypt) during the Middle Kingdom (Middle Bronze Age) (c.2000–1650 BCE)

Archaeometry, EarlyView.
Abstract This paper presents the first direct evidence of the slags produced during the cementation alloying process of Cu with speiss inside ceramic crucibles, thus representing Cu alloying with As in Middle Kingdom Egypt. The settlement deposits from the Middle Bronze Age were excavated on Elephantine Island, within modern Aswan.
Jiří Kmošek, Martin Odler
wiley   +1 more source

Cometary Dust in the Debris Disks of HD 31648 and HD 163296: Two ``Baby'' beta Pics

, 1998
The debris disks surrounding the pre-main sequence stars HD 31648 and HD 163296 were observed spectroscopically between 3 and 14 microns. Both possess a silicate emission feature at 10 microns which resembles that of the star beta Pictoris and those ...
Cameron A. G. W., Carol A. Grady, David K. Lynch, Gledhill T. M., Hayward T. L., Leinert C., Malfait K., Mannings V., Martha S. Hanner, Michael L. Sitko, Perez M. R., Ray W. Russell, Reach W. T., van den Ancker M. E., Waelkens C.   +14 more
core   +1 more source

Petrogenetic Implications for Ophiolite Ultramafic Bodies from Lokris and Beotia (Central Greece) Based on Chemistry of Their Cr-spinels

Geosciences, 2017
Cr-spinels from ultramafic rocks from Lokris (Megaplatanos and Tragana), and Beotia (Ypato and Alyki) ophiolitic occurrences were studied. These rocks comprise principally harzburgite with minor dunite. Small amounts of clinopyroxene-rich harzburgite and
Panagiotis Pomonis, Andreas Magganas
doaj   +1 more source

Early Holocene jökulhlaup chronology and deglaciation dynamics in central Iceland

Boreas, EarlyView.
Glacial lake outburst floods (jökulhlaups) have occurred throughout the Quaternary in glaciated regions worldwide. Reconstructing flood chronology yields insight into deglaciation processes, environmental change and the role of extreme events in landscape evolution.
Greta H. Wells, Þorsteinn Sæmundsson, Edwin R. C. Baynes, Timothy Beach, Sheryl Luzzadder‐Beach   +4 more
wiley   +1 more source

The Absence of Cold Dust and the Mineralogy and Origin of the Warm Dust Encircling BD +20 307

, 2010
Spitzer Space Telescope photometry and spectroscopy of BD +20 307 show that all of the dust around this remarkable Gyr-old spectroscopic binary arises within 1 AU. No additional cold dust is needed to fit the infrared excess.
Becklin, E. E., Song, I., Weinberger, A. J., Zuckerman, B.   +3 more
core   +1 more source

Magnetic Anisotropy in Single Crystals: A Review

Geosciences, 2018
Empirical relationships between magnetic fabrics and deformation have long served as a fast and efficient way to interpret rock textures. Understanding the single crystal magnetic properties of all minerals that contribute to the magnetic anisotropy of a
Andrea R. Biedermann
doaj   +1 more source

Pressure‐induced phase changes in polycrystalline Y2O3: Influence on structure and properties

Journal of the American Ceramic Society, EarlyView.
Abstract The micro‐ and nano‐structural effects of varying pressure and holding time at 1000°C during the high‐pressure processing of high‐purity, fine‐grained polycrystalline cubic yttrium oxide (c‐Y2O3) are investigated. The critical pressure required to induce the phase transformation from c‐Y2O3 to monoclinic‐Y2O3 (m‐Y2O3) ranges from 2.5 to 3.0 ...
Stuart Deutsch, Jafar F. Al‐Sharab, Oleg A. Voronov, Bernard H. Kear, Stephen D. Tse   +4 more
wiley   +1 more source

The nature and formation of silica minerals in eucrite meteorites: Insight into the protoplanetary magma crystallization

Meteoritics &Planetary Science, EarlyView.
Abstract Silica polymorphs in meteorites provide critical constraints on crystallization processes associated with thermal activity in the early solar system. A detailed investigation of silica polymorphs in eucrites (the largest group of achondrites) using cathodoluminescence imaging and laser‐Raman spectroscopy revealed significant variations in the ...
Rei Kanemaru, Akira Yamaguchi, Naoya Imae, Ryoga Maeda, Makoto Kimura, Kenji Horie, Takashi Mikouchi, Masaaki Miyahara, Masahiro Yasutake, Atsushi Takenouchi, Haruka Ono, Aiko Nakato, Junko Isa, Tomohiro Usui, Hirotsugu Nishido   +14 more
wiley   +1 more source