Results 71 to 80 of about 442,453 (293)

New Light on Molecular and Materials Complexity: 4D Electron Imaging [PDF]

, 2009
In this Perspective, 4D electron imaging is highlighted, after introducing some concepts, with an overview of selected applications that span chemical reactions, molecular interfaces, phase transitions, and nano(micro)mechanical systems.
Shorokhov, Dmitry, Zewail, Ahmed H.
core   +1 more source

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Large-scale imaging of brain network activity from >10,000 neocortical cells [PDF]

, 2009
Large-scale recording from populations of neurons is a promising strategy in the study of complex brain function. Here we introduce a simple optical technique that simultaneously probes the calcium activity of ~10,000 cells at the single cell resolution ...
Norio Matsuki, Shigehiro Namiki, Yuji Ikegaya   +2 more
core   +1 more source

Charge Transfer Properties Through Graphene Layers in Gas Detectors

, 2014
Graphene is a single layer of carbon atoms arranged in a honeycomb lattice with remarkable mechanical, electrical and optical properties. For the first time graphene layers suspended on copper meshes were installed into a gas detector equipped with a ...
Hall-Wilton, R., Jackman, R. B., Müller, H., Nguyen, T. T., Oliveri, E., Pfeiffer, D., Resnati, F., Ropelewski, L., Smith, J. A., Thuiner, P., van Stenis, M., Veenhof, R.   +11 more
core   +1 more source

Super‐Refractory Status Epilepticus (SRSE) in a Patient With Compound Heterozygous OPA1 Variants: Case Report and Literature Review

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Super‐Refractory Status Epilepticus (SRSE) is a rare, life‐threatening neurological emergency with unclear etiology in many cases. Mitochondrial dysfunction, often due to disease‐causing genetic variants, is increasingly recognized as a cause, with each gene producing distinct pathophysiological mechanisms.
Pouria Mohammadi, Lara Basovic, Christopher Michael McGraw   +2 more
wiley   +1 more source

Holography and Coherent Diffraction with Low-Energy Electrons: A Route towards Structural Biology at the Single Molecule Level [PDF]

, 2015
The current state of the art in structural biology is led by NMR, X-ray crystallography and TEM investigations. These powerful tools however all rely on averaging over a large ensemble of molecules.
Escher, Conrad, Fink, Hans-Werner, Latychevskaia, Tatiana, Longchamp, Jean-Nicolas   +3 more
core   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source

Stable ultrafast graphene hot-electron source on optical fiber

Nature Communications
A stable and durable ultrafast electron source is highly desirable for sophisticated vacuum electron technologies. However, free-space excitations based on ultrahigh-power or deep-ultraviolet pulsed lasers usually cause cathode material damage and ...
Guangjie Yao, Hao Hong, Xu Zhou, Kaifeng Lin, Huazhan Liu, Yilong You, Chang Liu, Ke Chen, Chi Li, Jianbo Yin, Zhujun Wang, Xuewen Fu, Qing Dai, Dapeng Yu, Kaihui Liu   +14 more
doaj   +1 more source

Near-field imaging of optical diffraction radiation generated by a 7-GeV electron beam

Physical Review Special Topics. Accelerators and Beams, 2007
We report the first unambiguous demonstration of near-field imaging of optical diffraction radiation (ODR). The source of the ODR was an aluminum metal reflective surface with a 7-GeV electron beam passing nearby its single edge.
A. H. Lumpkin, W. J. Berg, N. S. Sereno, D. W. Rule, C.-Y. Yao   +4 more
doaj   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source