Results 111 to 120 of about 43,014 (276)

Two solutions - multipulsations model of genesis of the silesian-cracovian Zn-Pb ore deposits

Rudarsko-geološko-naftni Zbornik, 1989
Silesian-Cracovian Zn-Pb ore deposits are hosted in Mesozoic cover and are located near main dislocations in the area between Upper Silesian Coal Basin and buried Caledonian mountains, A screen of Keuper clayely beds controls mixing of surficial waters ...
Czeslaw Harańczyk
doaj  

(NH4)2[Tc2O2(S2O7)4]: An Unexpected Technetium(V)‐Sulfate From the Reaction of (NH4)(TcO4) With SO3

Chemistry – A European Journal, EarlyView.
The reaction of the radioactive pertechnetate (99TcO4)− with the oxidizer SO3 leads to blue crystals of (NH4)2[Tc2O2(S2O7)4]. The complex dimeric [Tc2O2(S2O7)4]2− anion exhibits the technetium in the oxidation state V, showing that reduction occurs during the reaction.
Stefan Sutorius, Julian Heinen, David van Gerven, Jörn Bruns, Erik Strub, Mathias S. Wickleder   +5 more
wiley   +1 more source

Chemical Compositions of Evolved Stars From Near-Infrared IGRINS High-Resolution Spectra. I. Abundances in Three Red Horizontal Branch Stars

, 2018
We have derived elemental abundances of three field red horizontal branch stars using high-resolution (R$\simeq$ 45,000), high signal-to-noise ratio (S/N $\gtrsim$ 200) $H$ and $K$ band spectra obtained with the Immersion Grating Infrared Spectrograph ...
Afşar, Melike, Bozkurt, Zeynep, Jaffe, Daniel T., Kim, Hwihyun, Lawler, James E., Mace, Gregory N., Sneden, Christopher, Topcu, Gamze Böcek, Wood, Michael P.   +8 more
core   +1 more source

Tropospheric carbonyl sulfide mass balance based on direct measurements of sulfur isotopes. [PDF]

Proc Natl Acad Sci U S A, 2021
Davidson C, Amrani A, Angert A.
europepmc   +1 more source

Synthetic Strategies for Activity‐Based Probes to Decode Ubiquitin‐Like Modifiers

Chemistry – A European Journal, EarlyView.
ABSTRACT Ubiquitin‐like proteins (Ubls) such as SUMO, NEDD8, ISG15, URM1, UFM1, FAT10, ATG8/ATG12, and FUBI are essential regulators of cellular homeostasis, controlling processes from protein stability and trafficking to immune signaling and autophagy.
Saibal Chanda, Alan Pham, SreeNidhi Karnati, Natalia Soto Rodriguez, Alyssa Toner, Wenshe Ray Liu   +5 more
wiley   +1 more source

Sulfur isotopes as a proxy for human diet and mobility from the preclassic through colonial periods in the Eastern Maya lowlands. [PDF]

PLoS One, 2021
Ebert CE, Rand AJ, Green-Mink K, Hoggarth JA, Freiwald C, Awe JJ, Trask WR, Yaeger J, Brown MK, Helmke C, Guerra RA, Danforth M, Kennett DJ.   +12 more
europepmc   +1 more source

Hydroquinone Oxidation by Redox‐active Guanidines and Thioguanidines: Faster Conversion to High‐Potential Than to Low‐Potential Quinones

Chemistry – A European Journal, EarlyView.
New redox‐active oligothioguanidines are developed and used in dehydrogenative P–P coupling reactions and hydroquinone oxidations. Tetrathioguanidino‐ and tetraguanidinobenzenes oxidize high‐potential halogenated hydroquinones faster than relatively low‐potential hydroquinone.
Ute Wild, Olaf Hübner, Sebastian Jaworski, Elisabeth Kaifer, Hans‐Jörg Himmel   +4 more
wiley   +1 more source

Primary Sulfur Isotopes of Intraplate Basalts and Implications for Deep S Recycling of Altered Oceanic Crust

Geophysical Research Letters
Altered oceanic crust (AOC) is the largest contributor to the subducted sulfur (S) budget and its recycling modulates the redox evolution and S distribution in the mantle. However, the role of AOC in the deep cycling of S remains poorly constrained. Here
Xiang Wang, Zaicong Wang, Pu Sun, Zong‐Feng Yang, Wen Zhang, Zongqi Zou, Stephen Foley, Lang Wang, Keqing Zong, Zhaochu Hu, Yongsheng Liu   +10 more
doaj   +1 more source

Self‐Complementary Dimers Based on Zwitterionic Halogen Bond Donors

Chemistry – A European Journal, EarlyView.
In this study we present the first isolated zwitterionic homodimers based on halogen bonding (XB). After optimization of the structures by changing the Lewis base (LB) and the backbone, their dimerization was observed in gas phase, as well as, in solid state.
Dana Kutzinski, Raffaella Papagna, Elric Engelage, Lianne H. E. Wieske, Mate Erdelyi, Stefan M. Huber   +5 more
wiley   +1 more source

Heteroatom‐Doped Graphdiynes and Their Applications in Photo‐/Electro‐Catalytic CO2 Conversion

Carbon Innovation, EarlyView.
This review highlights the versatile role of doped graphdiyne (GDY) in boosting CO2 conversion, where metal and non‐metal doping simultaneously tune the electronic structure, create abundant active sites, and improve charge separation, light harvesting, and CO2 adsorption.
Fangzhou Yang, Yuwei Zhang, Wai‐Yeung Wong, Linli Xu   +3 more
wiley   +1 more source