Results 41 to 50 of about 14,518 (188)

Weak ferromagnetism in cobalt oxalate crystals

, 2010
Microcrystals of diaquocobalt(II) oxalate have been synthesized by the coprecipitation reaction of aqueous solutions of Cobalt (II) bromide and oxalic acid. Chemical analysis and thermal experiments revealed that there is only one phase present.
Awaga, Ayres, Bacsa, Bain, Blundell, Bonner, Decurtins, Deyrieux, Deyrieux, Drouet, Dubernat, García-Couceiro, Glerup, Hursthouse, Jongen, Keene, Kurmoo, Lukin, McCusker, Miller, Molinier, Ovanesyan, Ovcharenko, Price, Price, Pujol, Simizu, Sledzinska, Sugimoto, Vaidya, Wang, West   +31 more
core   +1 more source

Dating of biodeposits of oxalates at the Arc de Berà in Tarragona, Spain [PDF]

, 2001
This research stems from an earlier study of the lichen covering with oxalate deposits at the Arc de Bera monument. The initial objective of dating these biodeposits opened up other questions concerning the structure of these deposits and how they were ...
Argemí, Mercè, Girbal i Lladó, Josep, Prada Pérez, Jose Luis, Rocabayera i Viñas, Rosa   +3 more
core   +2 more sources

Photo and copper dual catalysis for allene syntheses from propargylic derivatives via one-electron process

Nature Communications, 2022
Transition-metal-catalyzed couplings of propargylic alcohol derivatives with organometallic reagents proceeds via two-electron transformations, which present limitations in scope and selectivity.
Qi Liu, Jian Zheng, Xue Zhang, Shengming Ma   +3 more
doaj   +1 more source

Oxalate formation under the hyperarid conditions of the Atacama desert as a mineral marker to provide clues to the source of organic carbon on Mars [PDF]

, 2016
In this study, we report the detection and characterization of the organic minerals weddellite (CaC2O4 · 2H2O) and whewellite (CaC2O4 · H2O) in the hyperarid, Mars-like conditions of the Salar Grande, Atacama desert, Chile.
Applin, D.M., Cheng, Z.Y., Chong Díaz, M., Fernandez Remolar, D.C., Fernandez-Sampedro, M.T., García-Villadangos, M., Huang, T., Izawa, M.R.M., Parro, V., Xiao, L.   +9 more
core   +1 more source

Oxalates as Activating Groups for Alcohols in Visible Light Photoredox Catalysis: Formation of Quaternary Centers by Redox-Neutral Fragment Coupling. [PDF]

, 2015
Alkyl oxalates are new bench-stable alcohol-activating groups for radical generation under visible light photoredox conditions. Using these precursors, the first net redox-neutral coupling of tertiary and secondary alcohols with electron-deficient ...
Jamison, Christopher R, MacMillan, David WC, Nawrat, Christopher C, Overman, Larry E, Slutskyy, Yuriy   +4 more
core  

Soft chemistry synthesis of the perovskite CaCu3Ti4O12 [PDF]

, 2007
The perovskite CaCu3Ti4O12 (CCT) has been obtained after calcination of oxalate precursors at 900–1000 °C in air. Those precursors are prepared using a soft chemistry method, the coprecipitation.
Durand, Bernard, Guillemet-Fritsch, Sophie, Marchin, Loïc   +2 more
core   +3 more sources

Method of preparing zinc orthotitanate pigment [PDF]

, 1977
Zinc orthotitanate suitable for use as a pigment for spacecraft thermal control coatings is prepared by heating a slightly zinc deficient reaction mixture of precipitated oxalates of zinc and titanium.
Gates, D. W., Gilligan, J. E., Harada, Y., Logan, W. R.   +3 more
core   +1 more source

Spontaneously formed porous and composite materials [PDF]

, 2010
In recent years, a number of routes to porous materials have been developed which do not involve the use of pre-formed templates or structure-directing agents. These routes are usually spontaneous, meaning they are thermodynamically downhill.
Breval, Chen, Corr, Cui, Daniel P. Shoemaker, Ding, Dong, Dong, Eric S. Toberer, Erlebacher, Han, Konishi, Konishi, Kumar, Laurent, Levitz, Li, Li, Liu, Liu, Liu, Meldrum, Nishihata, Niu, Nogués, Panda, Panda, Paulose, Pavasupree, Rajamathi, Ram Seshadri, Ren, Serena A. Corr, Shen, Shoemaker, Shoemaker, Singh, Smeltzer, Smått, Smått, Sort, Studart, Su, Suenaga, Suetsuna, Suzuki, Suzuki, Tian, Tiemann, Toberer, Toberer, Toberer, Toberer, Toberer, Toberer, Toberer, Toberer, Tsai, Wang, Wang, Xu, Yamauchi, Yang, Yu, Yu, Yuan, Yue, Zhang, Zhang, Zhu, Zou, Zou   +71 more
core   +1 more source

Comparison of oxalate contents and recovery from two green juices prepared using a masticating juicer or a high speed blender

NFS Journal, 2015
Background: Juicing is a popular health trend where green juice is prepared from a range of common vegetables. If spinach is included in the mix then the juice may contain significant quantities of oxalates and these are not safe to consume regularly in ...
Leo Vanhanen, Geoffrey Savage
doaj   +1 more source

In vitro analysis of urinary stone composition in dual-energy computed tomography [PDF]

, 2018
Purpose: Dual energy computed tomography (DECT) is a new method of computed tomography (CT) imaging, allowing the assessment of not only the object's morphology, but also its composition.
Chrzan, Robert, Gawlas, Wojciech, Stępień, Monika   +2 more
core   +1 more source