Results 51 to 60 of about 107,629 (241)

On the Cooling of the Neutron Star in Cassiopeia A

, 2011
We demonstrate that the high-quality cooling data observed for the young neutron star in the supernova remnant Cassiopeia A over the past 10 years--as well as all other reliably known temperature data of neutron stars--can be comfortably explained within
C. Schaab, D. Blaschke, D. N. Voskresensky, D. N. Voskresensky, D. N. Voskresensky, F. Weber, H. Grigorian, H. Tananbaum, W. B. Ashworth Jr.   +8 more
core   +1 more source

Deep dielectric charging of regolith within the Moon\u27s permanently shadowed regions [PDF]

, 2014
Energetic charged particles, such as galactic cosmic rays (GCRs) and solar energetic particles (SEPs), can penetrate deep within the lunar surface, resulting in deep dielectric charging.
Jordan, Andrew P., Joyce, Colin J., Schwadron, Nathan A., Spence, Harlan E., Stubbs, T. J., Wilson, Jody K.   +5 more
core   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Proton-Blocking Anion-Exchange Membranes for Efficient Lithium Hydroxide Recovery by Bipolar Membrane Electrodialysis

Membranes
In bipolar membrane electrodialysis (BPED), proton transport through the anion-exchange membrane (AEM) is a major factor that reduces overall process efficiency.
Ji-Hyeon Lee, Moon-Sung Kang
doaj   +1 more source

Polyvinylimidazole-wrapped Halloysite Nanotubes for High Proton Conductivity in Polymer Electrolyte Membranes

International Journal of Electrochemical Science, 2020
The construction of continuous proton transfer channels within a proton exchange membrane is an important and challenging task for the logical design of proton exchange membranes. Herein, inspired by the mechanism of moisture transport used by plants and
Xiaoyang Liu, Xiang Sun, Hongqian Ren, Mengjie Yang, Mingling Xia, Jinghe Hou, Yi Feng, Huili Ding   +7 more
doaj   +1 more source

Proton conductivity and luminiscence properties of lanthanide aminotriphosphonates [PDF]

, 2016
Metal phosphonates are multifunctional solids with tunable properties, such as internal H-bond networks, and high chemical and thermal stability [1]. In the present work, we describe the synthesis, structural characterization, luminescent properties ...
Angeli, Giasemi K., Bazaga-García, Montse, Cabeza-Diaz, Aurelio, Choquesillo-Lazarte, Duane, Demadis, Konstantinos D., Hix, Gary B., Losilla, E. R., Olivera-Pastor, Pascual, Papathanasiou, Konstantinos E., Salcedo, Inés R.   +9 more
core  

First-principles investigation of polarization and ion conduction mechanisms in hydroxyapatite

, 2017
We report first-principles simulation of polarization mechanisms in hydroxyapatite to explain the underlying mechanism behind the reported ion conductivities and polarization under electrical poling at elevated temperatures.
Kasamatsu, Shusuke, Sugino, Osamu
core   +1 more source

Self-sustainable protonic ceramic electrochemical cells using a triple conducting electrode for hydrogen and power production. [PDF]

, 2020
The protonic ceramic electrochemical cell (PCEC) is an emerging and attractive technology that converts energy between power and hydrogen using solid oxide proton conductors at intermediate temperatures.
Bian, Wenjuan, Ding, Dong, Ding, Hanping, Ding, Yong, Hu, Boxun, Jiang, Chao, Orme, Christopher J, Singh, Prabhakar, Wang, Lucun, Wu, Wei, Zhang, Yunya   +10 more
core   +1 more source

Exploiting metabolic adaptations to overcome dabrafenib treatment resistance in melanoma cells

Molecular Oncology, EarlyView.
We show that dabrafenib‐resistant melanoma cells undergo mitochondrial remodeling, leading to elevated respiration and ROS production balanced by stronger antioxidant defenses. This altered redox state promotes survival despite mitochondrial damage but renders resistant cells highly vulnerable to ROS‐inducing compounds such as PEITC, highlighting redox
Silvia Eller, Susanne Ebner, Carmen Haselrieder, Julia K. Günther, Astrid Drasche, Sophie Strich, Chiara Volani, Andrea Medici, Aleksandar Nikolajevic, Alex Deltedesco, Johannes E. Sigmund, Michael J. Blumer, Martin Hermann, Johanna Vanacker, Gerald Brandacher, Eduard Stefan, Omar Torres‐Quesada, Jakob Troppmair   +17 more
wiley   +1 more source

Composite membranes for proton exchange membrane fuel cells based on methyl methacrylate-co-maleimide /phosphotungstic acid [PDF]

شیمی کاربردی روز, 2018
Poly(methyl methacrylate-co-nitrophenyl maleimide) (MMA-co-NMI) and poly(methyl‌‌‌‌ methacrylate-co-hydroxyphenyl maleimide)‌‌‌‌‌ (MMA-co-HMI) copolymers were synthesized using free radical polymerization of MMA with a new MI monomer containing phenyl ...
zahra seidzadeh, Fariborz Atabaki, negin Ghaemi, Mohammad Nasiri   +3 more
doaj   +1 more source