Results 31 to 40 of about 29,284 (264)

Ab initio study of oxygen vacancies in α-quartz [PDF]

Journal of Non-Crystalline Solids, 1997
Extrinsic levels, formation energies, and relaxation geometries are calculated ab initio for oxygen vacancies in alpha-quartz SiO2. The vacancy is found to be thermodynamically stable in the charge states Q=+3, Q=0, Q=--2, and Q=-3. The charged states are stabilized by large and asymmetric distortions near the vacancy site.
CARBONARO, CARLO MARIA, FIORENTINI, VINCENZO, Massidda S.   +2 more
openaire   +3 more sources

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

Molecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka, Wioleta Cieślik, Wojciech Płaziński, Katarzyna Stępnik, Anna Boguszewska‐Czubara, Elżbieta Kot, Robert Musioł, Mateusz Jasica, Anna Mrozek‐Wilczkiewicz, Katarzyna Malarz   +9 more
wiley   +1 more source

Spectroscopically Detected Formation of Oxygen Vacancies in Nano-Crystalline CeO2 – x [PDF]

Журнал нано- та електронної фізики, 2013
In this work the peculiarities of oxygen vacancies formation in cerium oxide nanoparticles for different external influences have been investigated by spectroscopic methods.
P.O. Maksimchuk, A.A. Masalov, Yu.V. Malyukin   +2 more
doaj  

Electronic and Magnetic Properties Studies on Mn and Oxygen Vacancies Codoped Anatase TiO2

Advances in Condensed Matter Physics, 2016
The electronic and magnetic properties of Mn and oxygen vacancies codoped anatase TiO2 were investigated. The calculated results showed that the TiO2 codoped with Mn and oxygen vacancies have a magnetic moment value of 3.415 μB per Ti31MnO63 supercell ...
Zhongpo Zhou, Xinwei Yang, Haiying Wang, Zhaorui Zou, Jingjing Guo   +4 more
doaj   +1 more source

Colossal oxygen vacancy formation at a fluorite-bixbyite interface

Nature Communications, 2020
Oxygen vacancies can impart interesting properties in complex oxides, but specific architectures designed to create high-density oxygen vacancies are largely unknown.
Dongkyu Lee, Xiang Gao, Lixin Sun, Youngseok Jee, Jonathan Poplawsky, Thomas O. Farmer, Lisha Fan, Er-Jia Guo, Qiyang Lu, William T. Heller, Yongseong Choi, Daniel Haskel, Michael R. Fitzsimmons, Matthew F. Chisholm, Kevin Huang, Bilge Yildiz, Ho Nyung Lee   +16 more
doaj   +1 more source

A yeast model of 5‐oxoproline accumulation reveals a general toleration to 5‐oxoproline

FEBS Open Bio, EarlyView.
Using a yeast model, we show that even high accumulation of 5‐oxoproline causes only mild cellular stress and does not trigger oxidative stress. Instead, cells adapt by activating efflux pumps and diverse protective pathways, suggesting that previously proposed harmful effects of 5‐oxoproline may arise from indirect metabolic imbalances rather than the
Pratiksha Dubey, Vaishnavi Sanjayan, Praveen Singh, Shantanu Sengupta, Anand Kumar Bachhawat   +4 more
wiley   +1 more source

Recent status and future prospects of emerging oxygen vacancy-/defect-rich electrode materials: from creation mechanisms to detection/quantification techniques, and their electrochemical performance for rechargeable batteries

JPhys Energy
Over the last few years, keen interest has been taken in creating and tuning the concentration of oxygen vacancies in electrode materials to enhance their performance and to develop next-generation rechargeable batteries.
Sandeep Kumar Sundriyal, Yogesh Sharma
doaj   +1 more source

Dose‐dependent hepatotoxicity of hydrogen peroxide in HepG2 cells and its modulation by CYP450 induction

FEBS Open Bio, EarlyView.
NMR metabolomics revealed concentration‐dependent metabolic perturbations in HepG2 cells exposed to H2O2. Rifampicin pretreatment enhanced metabolic competence, attenuated toxin‐induced alterations and produced metabolite profiles more consistent with human liver physiology, supporting the use of CYP450‐induced HepG2 models for improved in vitro ...
Maren Jinks, Garth L. Maker, Emily C. Davies, Berin A. Boughton, Samantha Lodge   +4 more
wiley   +1 more source

Passivation of oxygen vacancy states in HfO2 by nitrogen [PDF]

Journal of Applied Physics, 2006
Nitrogen is known to reduce leakage currents and charge trapping in high-dielectric-constant gate oxides such as HfO2. We show that this occurs because nitrogen, substituting for oxygen atoms next to oxygen vacancy sites, repels the occupied gap states due to the neutral and positively charged oxygen vacancies out of the band gap into its conduction ...
Xiong, K., Robertson, J., Clark, S.J.
openaire   +3 more sources

Early Clinical, Imaging, and Pathological Characteristics of SRPK3/TTN‐Digenic Myopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective SRPK3/TTN‐digenic myopathy was recently established as a skeletal muscle myopathy caused by digenic inheritance. This study characterizes the early clinical presentation of SRPK3/TTN‐digenic myopathy in one previously reported and seven newly identified pediatric patients.
Rotem Orbach, Sandra Donkervoort, Carola Hedberg‐Oldfors, Giovanni Baranello, Dimah Saade, Precilla D'Souza, Ruchee Patel, Eva Michael, A. Reghan Foley, Diana Bharucha‐Goebel, S. Jin Haugland, Meghan McAnally, Omer Abdul Hamid, Katherine Chao, Ellen F. Macnamara, Alan H. Beggs, Anna Sarkozy, Juliane Mueller, Steven A. Moore, Richard S. Finkel, Cynthia J. Tifft, Francesco Muntoni, Anders Oldfors, Carsten G. Bönnemann   +23 more
wiley   +1 more source