Results 41 to 50 of about 161,960 (313)

Monitoring melt pool dynamics using multi-detector electron optical imaging

open access: yesMaterials & Design
Experimental observation of the dynamic melt pool evolution in advanced powder bed fusion processes is a challenging endeavor. The main challenge is that the small melt pool dimensions and its fast dynamic evolution require high spatial and temporal ...
Jakob Renner   +4 more
doaj   +1 more source

Magnetic-field-dependent photodynamics of single NV defects in diamond: an application to qualitative all-optical magnetic imaging

open access: yesNew Journal of Physics, 2012
Magnetometry and magnetic imaging with nitrogen–vacancy (NV) defects in diamond rely on the optical detection of electron spin resonance (ESR). However, this technique is inherently limited to magnetic fields that are weak enough to avoid electron spin ...
J-P Tetienne   +6 more
doaj   +1 more source

Nanoscale Imaging of Kidney Glomeruli Using Expansion Pathology

open access: yesFrontiers in Medicine, 2018
Kidney glomerular diseases, such as the minimal change disease (MCD) and focal segmental glomerulosclerosis (FSGS), and other nephrotic syndromes, are typically diagnosed or confirmed via electron microscopy.
Octavian Bucur   +3 more
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

open access: yesFEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Alternative optical concept for electron cyclotron emission imaging

open access: yesReview of Scientific Instruments, 2014
The implementation of advanced electron cyclotron emission imaging (ECEI) systems on tokamak experiments has revolutionized the diagnosis of magnetohydrodynamic (MHD) activities and improved our understanding of instabilities, which lead to disruptions. It is therefore desirable to have an ECEI system on the ITER tokamak.
Liu, J.X.   +14 more
openaire   +4 more sources

Biophysical approaches for studying viral entry

open access: yesFEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Recent progress of rare earth nanoparticles as magnetic resonance imaging contrast agents

open access: yes上海师范大学学报. 自然科学版, 2016
Rare earth ions,owing to their unique 4f electron configurations,exhibit unique optical and magnetic properties.These rare earth nanoparticles are widely used as magnetic resonance imaging contrast agents.This paper reviews the classification,synthesis ...
ZHANG Xiaofen   +4 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Comparison of the characteristic energy of precipitating electrons derived from ground-based and DMSP satellite data [PDF]

open access: yes, 2005
International audienceEnergy maps are important for ionosphere-magnetosphere coupling studies, because quantitative determination of field-aligned currents requires knowledge of the conductances and their spatial gradients.
M. Ashrafi   +5 more
core   +1 more source

Quantum biological tunnel junction for electron transfer imaging in live cells

open access: yesNature Communications, 2019
Although quantum biological electron transfer is important in many biological processes, imaging of the events in live cells has remained challenging.
Hongbao Xin   +5 more
doaj   +1 more source

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