Results 31 to 40 of about 7,369,179 (138)

Advanced aqueous alteration in primitive meteorites: Micro‐ to nanoscale studies of CR1 iron sulfides

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1806-1825, August 2026.
Abstract This study documents micro‐ to nanoscale observations of primary nebular and secondary parent body iron sulfides in the CR1 GRO 95577. Despite the extensive alteration of the bulk sample, some primary sulfides managed to avoid alteration, having originally formed in the solar nebula during chondrule formation by either fission‐sulfidization or
S. A. Singerling
wiley   +1 more source

Application of saponite-containing basaltic tuffs to improve the cultivation of vegetable crops [PDF]

, 2019
The experiments on the sod-podzolic loamy soil showed that the best indicators of agronomic efficiency in the cultivation of blue fenugreek, dill, green beans and basil were achieved in case of preplans application of saponite-containing basaltic tuffs ...
Sachyuka, Tatsiana, Akulich, Mikhail, Bosak, Viktar   +2 more
core  

Nonhydrothermal Synthesis and Properties of Saponite-Like Materials [PDF]

, 2020
-Main features of nonhydrothermal synthesis of saponite-like materials containing Zn(II) and Mg(II) cations in octahedral networks were studied. Optimal conditions for the synthesis were determined.
Santen, Erdmann, M V Sychev, I M Astrelin, Hensen, Van Santen, R V Prihod'ko, K Erdmann, R A Van, E J M Hensen, Astrelin   +10 more
core  

The role of composition in the spectral evolution of carbonaceous asteroids as informed by Bennu sample return

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1875-1904, August 2026.
Abstract Near‐Earth rubble‐pile asteroids Bennu and Ryugu are part of the carbonaceous taxonomic complex (C‐complex), and samples returned from both bodies resemble the most aqueously altered carbonaceous chondrites. However, telescopic and spacecraft visible–near infrared (VIS–NIR) reflectance spectra of Ryugu exhibit a red (positive) spectral slope ...
Ralph E. Milliken, Takahiro Hiroi, Victoria E. Hamilton, Cody D. Schultz, Ed A. Cloutis, Hannah H. Kaplan, Melissa K. Kontogiannis, Nathalia Vega‐Santiago, Dani N. DellaGiustina, Harold C. Connolly Jr., Dante S. Lauretta   +10 more
wiley   +1 more source

Mineralogy, mineral chemistry, and redox equilibria in ten aggregate particles from asteroid Bennu

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1905-1927, August 2026.
Abstract Examination of 10 Bennu aggregate particles has revealed the presence of many phases which taken together can provide constraints on the oxygen fugacity (fO2) of Bennu samples. Phyllosilicates (saponite and serpentine), carbonates, oxides (magnetite, chromite), sulfides (pyrrhotite, pentlandite), phosphate (hydroxyapatite, Na‐Mg‐phosphate ...
K. Righter, J. Gorce, L. Le, K. Thomas‐Keprta, Z.E. Wilbur, L.P. Keller, Z. Gainsforth, T.J. McCoy, T.J. Zega, S.S. Russell, H.C. Connolly Jr., D.S. Lauretta   +11 more
wiley   +1 more source

ADSORPTION OF PROTAMINE AND PAPAIN PROTEINS ON SAPONITE

, 2008
Due to the increased importance of bionanocomposites, protamine and papain proteins were adsorbed on Na+ and on Cs+-exchanged saponite from aqueous solution.
Dekany, Imre, Schoonheydt, Robert A., Johnston, Cliff T., Premachandra, Gnanasiri S, Leeman, Hugo, Szekeres, Marta, Johnston, Cliff T, Szabo, Tamas, Mitea, Raluca, Schoonheydt, Robert A, Premachandra, Gnanasiri S.   +10 more
core   +1 more source

Saponite-anthocyanin derivatives: The role of organoclays in pigment photostability

, 2020
Hybrid pigments based on organo-saponite (cetyltrimethyl ammonium bromide (CTAB-Sap) and a commercial anthocyanin (ACN) dye, Crystal Red Grape, were prepared.
Silva-Filho, Edson, C, Lima, Luciano C. B., Fonseca, Maria G., Zhuang, Guanzheng, Silva-Filho, Edson C., Silva, Fabricia C., Lima, Luciano C.B., Jaber, Maguy, Silva, Fabrícia, C, Fonseca, Maria, G   +9 more
core   +1 more source

Thermal Degradation and Thermal Decomposition of Plasticized PVC Including POSS Additives for PVC Compounds: Mechanisms, Impact, and Performance of Standards

Journal of Vinyl and Additive Technology, Volume 32, Issue 4, Page 1049-1077, July 2026.
Additives' structures. ABSTRACT Poly(vinyl chloride) has been a key polymeric material since its commercial production in 1931, demonstrating versatility across numerous industries due to its compatibility with various additives. PVC's inherent properties, flame retardance, durability, and recyclability make it ideal for building and construction ...
Stefano Gardi, Gianluca Sarti, Luca Palin, Enrico Boccaleri, Alberto Frache   +4 more
wiley   +1 more source

The evolution of saponite: An experimental study based on crystal chemistry and crystal growth

, 2021
Element incorporation and partitioning during the evolution of clay minerals have significant implications for element cycling in geochemical processes. The main aim of this experimental study is to further our understanding of element redistribution and
Zhu, Jianxi, Li, Shangying, Baron, Fabien, Ji, Shichao, Zhang, Chaoqun, Petit, Sabine, He, Hongping, Tao, Qi, Gregoire, Brian, Yang, Yiping   +9 more
core   +1 more source

The Magnetic Mineralogy of Carbonaceous Chondrites: A Microscopy and Machine Learning Study of Meteorite WIS 91600

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract A central challenge in the paleomagnetic study of meteorites is to characterize their diverse remanence carriers. Here, we develop a machine‐learning assisted workflow that combines multi‐scale (mm to nm) and multi‐dimensional (2D‐3D) microscopy to build a comprehensive picture of ferromagnetic mineralogy in the C2 ungrouped carbonaceous ...
Richard J. Harrison, Po‐Yen Tung, Thomas Ginnis, Farhang Nabiei, Ursula Shaw, Elias N. Mansbach, James Bryson   +6 more
wiley   +1 more source