Results 41 to 50 of about 584,233 (340)

Impact of the Interruption Duration on Photoluminescence Properties of MOCVD-Grown GaAsP/InAlGaAs Quantum Well Structures

Nanomaterials
The growth interruption technology is introduced to the growth of GaAsP/InAlGaAs quantum well (QW) structure using metal–organic chemical vapor deposition (MOCVD).
Bin Wang, Yugang Zeng, Xuezhe Yu, Weijie Gao, Wei Chen, Haoyu Shen, Li Qin, Yongqiang Ning, Lijun Wang   +8 more
doaj   +1 more source

Interferometric Wavefront Sensing System Based on Deep Learning

Applied Sciences, 2020
At present, most wavefront sensing methods analyze the wavefront aberration from light intensity images taken in dark environments. However, in general conditions, these methods are limited due to the interference of various external light sources.
Yuhao Niu, Zhan Gao, Chenjia Gao, Jieming Zhao, Xu Wang   +4 more
doaj   +1 more source

Anomalous luminescence of subglacial sediment at Haut glacier d'Arolla, Switzerland - a consequence of resetting at the glacier bed? [PDF]

, 2010
<p>Luminescence has the potential to elucidate glacial geomorphic processes because primary glacial sediment sources and transport pathways are associated with contrasting degrees of exposure to light.
Aitken, Aitken, Alley, Alley, Armitage, Bailey, Bateman, Bateman, Berger, Blair, Blake, Boulton, Burbidge, Copland, Dreimanis, Fischer, Fuchs, Fukuchi, Galbraith, Gemmell, Gemmell, Goodsell, Grenfell, Grum, Gurnell, Harbor, Hubbard, Krbetschek, Lee, Lian, Liritzis, Lukas, Murray, Nienow, Pegau, Rhodes, Rhodes, Rink, Sanderson, Sanderson, Sanderson, Sharp, Singhvi, Stone, Swift, Swift, Thomas, Toyoda, Tranter, Wallinga, Wallinga, Wintle, Wintle, Zöller   +53 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

A Comprehensive Review of Group-III Nitride Light-Emitting Diodes: From Millimeter to Micro-Nanometer Scales

Micromachines
This review describes the development history of group-III nitride light-emitting diodes (LEDs) for over 30 years, which has achieved brilliant achievements and changed people′s lifestyles.
Xinye Fan, Jiawang Shi, Yiren Chen, Guoqing Miao, Hong Jiang, Hang Song   +5 more
doaj   +1 more source

In-Service Detection and Quantification of Railway Wheel Flat by the Reflective Optical Position Sensor

Sensors, 2020
Railway wheel tread flat is one of the main faults of railway wheels, which brings great harm to the safety of vehicle operation. In order to detect wheel flats dynamically and quantitatively when trains are running at high speed, a new wheel flat ...
Run Gao, Qixin He, Qibo Feng, Jianying Cui   +3 more
doaj   +1 more source

A Design of High-Efficiency: Vertical Accumulation Modulators Based on Silicon Photonics

Nanomaterials, 2023
On-chip optical modulators, which are capable of converting electrical signals into optical signals, constitute the foundational components of photonic devices.
Zhipeng Zhou, Zean Li, Cheng Qiu, Yongyi Chen, Yingshuai Xu, Xunyu Zhang, Yiman Qiao, Yubing Wang, Lei Liang, Yuxin Lei, Yue Song, Peng Jia, Yugang Zeng, Li Qin, Yongqiang Ning, Lijun Wang   +15 more
doaj   +1 more source

A model for luminescence of localized state ensemble

, 2004
A distribution function for localized carriers, $f(E,T)=\frac{1}{e^{(E-E_a)/k_BT}+\tau_{tr}/\tau_r}$, is proposed by solving a rate equation, in which, electrical carriers' generation, thermal escape, recapture and radiative recombination are taken into ...
Curie D., Eliseev P. G., Li Q., M. H Xie, Notzel R., Q Li, Rashba E. I., S. J Xu, S. Y Tong   +8 more
core   +1 more source

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

Molecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee, Byung‐Cheol Han, Gi‐Bang Koo, Jihye Park, Mijin Kwon, Young Bin Park, Jae‐Mun Choi, Seung‐Ho Lee, Sangho Roh   +8 more
wiley   +1 more source

Simultaneous Measurement of 6DOF Motion Errors of Linear Guides of CNC Machine Tools Using Different Modes

Sensors, 2020
Based on the prior work on the six degrees of freedom (6DOF) motion errors measurement system for linear axes, and for the different types of machine tools and different installation methods, this study used a ray tracing idea to establish the ...
Peizhi Jia, Bin Zhang, Qibo Feng, Fajia Zheng   +3 more
doaj   +1 more source