Results 51 to 60 of about 2,297,927 (297)

The relative importance of electron-electron interactions compared to disorder in the two-dimensional "metallic" state

, 2001
The effect of substrate bias and surface gate voltage on the low temperature resistivity of a Si-MOSFET is studied for electron concentrations where the resistivity increases with increasing temperature.
A. Gold, A. Lewalle, A.R. Hamilton, A.R. Hamilton, B.L. Altshuler, C. J. B. Ford, D. J. Paul, D. Popović, E. Abrahams, E. Abrahams, E. H. Hwang, F. Stern, F. Stern, G. Brunthaler, G. Redmond, G. Zala, J. Yoon, M. Pepper, M.J. Uren, M.J. Uren, M.P. Sarachik, M.Y. Simmons, M.Y. Simmons, P.T. Coleridge, S. Chakravarty, S. Das Sarma, S. Das Sarma, S. Das Sarma, S. Das Sarma, S. Das Sarma, S. He, S. Hikami, S.V. Kravchenko, S.V. Kravchenko, S.V. Kravchenko, T. Ando, T.M. Klapwijk, V. Senz, V. Senz, V.M. Pudalov, X.G. Feng, Y. Kawaguchi, Y. Meir   +42 more
core   +1 more source

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

Interaction corrections to the Hall coefficient at intermediate temperatures

, 2001
We investigate the effect of electron-electron interaction on the temperature dependence of the Hall coefficient of 2D electron gas at arbitrary relation between the temperature $T$ and the elastic mean-free time $\tau$.
B.L. Altshuler, B.N. Narozhny, E. Abrahams, Gábor Zala, I.L. Aleiner, Y.Y. Proskuryakov   +5 more
core   +1 more source

ATF4‐mediated stress response as a therapeutic vulnerability in chordoma

Molecular Oncology, EarlyView.
We screened 5 chordoma cell lines against 100+ inhibitors of epigenetic and metabolic pathways and kinases and identified halofuginone, a tRNA synthetase inhibitor. Mechanistically halofuginone induces an integrated stress response, with eIF2alpha phosphorylation, activation of ATF4 and its target genes CHOP, ASNS, INHBE leading to cell death ...
Lucia Cottone, James Dunford, Eleanor Calcutt, Vicki Gamble, Filiz Senbabaoglu Aksu, Lorena Ligammari, Georgina Wherry, Giorgia Gaeta, John C. Christianson, Adrienne M. Flanagan, Udo Oppermann, Adam P. Cribbs   +11 more
wiley   +1 more source

RADIATION OF ELECTRONEGATIVE GLOW DISCHARGE AFTER TRANSITION FROM THE CYLINDRICAL GEOMETRY TO THE COAXIAL ONE

St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2019
The transition from traditional cylindrical discharge geometry to the coaxial one (where the discharge plasma is located in a gap between two coaxially placed cylindrical tubes) has been theoretically investigated for positive column of electronegative ...
Golovitskii Alexander, Remiga Oksana
doaj   +1 more source

Investigation into the Effect of Increasing Target Temperature and the Size of Cavity Confinements on Laser-Induced Plasmas

Metals, 2020
In this work, the effect of the sample temperature on the magnesium (Mg) and titanium (Ti) plasmas generated by a Q-switched Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) laser operating at its fundamental wavelength of 1064 nm has been investigated ...
Hongbing Yao, Emmanuel Asamoah, Pengyu Wei, Jiawei Cong, Lin Zhang, James Kwasi Quaisie, Anita Asamoah, Kwaku Ayepah, Weihua Zhu   +8 more
doaj   +1 more source

Incoherent Thomson scattering: future implementation and measurement capabilities on the PANDORA experiment

Frontiers in Astronomy and Space Sciences, 2022
The PANDORA (Plasmas for Astrophysics Nuclear Decays Observation and Radiation for Archaeometry) experiment aims to study the β-decay process inside a dense plasma mimicking stellar conditions. An electron cyclotron resonance plasma trap will be built at
S. Tsikata, L. Maunoury, J-E. Ducret
doaj   +1 more source

Ion-ion dynamic structure factor, acoustic modes and equation of state of two-temperature warm dense aluminum

, 2018
The ion-ion dynamical structure factor and the equation of state of warm dense aluminum in a two-temperature quasi-equilibrium state, with the electron temperature higher than the ion temperature, are investigated using molecular-dynamics simulations ...
Dharma-wardana, M. W. C., Förster, G. D., Harbour, L., Lewis, L. J.   +3 more
core   +1 more source

Purely excitonic lasing in ZnO microcrystals: Temperature-induced transition between exciton-exciton and exciton-electron scattering [PDF]

, 2017
Since the seminal observation of room-temperature laser emission from ZnO thin films and nanowires, numerous attempts have been carried out for detailed understanding of the lasing mechanism in ZnO.
Akifumi Asahara, Haruka Soma, Kanae Fukuoka, Kanako Kodama, Ryosuke Matsuzaki, Takashi Uchino, Tohru Suemoto, Yutaka Adachi   +7 more
core   +2 more sources

PARP inhibition and pharmacological ascorbate demonstrate synergy in castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
Pharmacologic ascorbate (vitamin C) increases ROS, disrupts cellular metabolism, and induces DNA damage in CRPC cells. These effects sensitize tumors to PARP inhibition, producing synergistic growth suppression with olaparib in vitro and significantly delayed tumor progression in vivo. Pyruvate rescue confirms ROS‐dependent activity.
Nicolas Gordon, Peter T. Gallagher, Orly I. Richter, Neermala Poudel Neupane, Amy C. Mandigo, Jennifer J. McCann, Emanuela Dylgjeri, Irina Vasilevskaya, Christopher McNair, Channing J. Paller, Wm. Kevin Kelly, Karen E. Knudsen, Matthew J. Schiewer, Ayesha A. Shafi   +13 more
wiley   +1 more source