Results 121 to 130 of about 80,518 (304)

Mesoporous‐Shell Monolayer Plasmonic Architecture Enables Quantitative and Decision‐Guided SERS

open access: yesAdvanced Science, EarlyView.
Mesoporous‐shell‐regulated molecular transport combined with monolayer hotspot determinism transforms surface‐enhanced Raman spectroscopy (SERS) from ultrasensitive detection into quantitative and decision‐guided molecular sensing. ABSTRACT Quantitative surface‐enhanced Raman spectroscopy (SERS) has long been impeded by stochastic hotspot formation ...
Guangyao Huang   +9 more
wiley   +1 more source

Preconditioning and Parallel Preconditioning

open access: yes, 1998
We review current methods for preconditioning systems of equations for their solution using iterative methods. We consider the solution of unsymmetric as well as symmetric systems and discuss techniques and implementations that exploit parallelism.
Iain S. Duff   +3 more
core  

Targeting β2‐Adrenergic Receptor Stability With Lycorine Reveals a Host‐Directed Pathway for Antiviral Defense Against Poxviruses

open access: yesAdvanced Science, EarlyView.
Chronic stress drives autophagy‐mediated β2‐AR degradation, impairing antiviral immunity and promoting poxvirus lethality. Lycorine directly stabilizes β2‐AR to restore host defense, suppress excessive inflammation and improve survival. ABSTRACT Psychological stress is a pervasive yet poorly understood modulator of infectious disease outcomes. Here, we
Xin Zhang   +12 more
wiley   +1 more source

Nano Proton Scavengers Modulate Endosomal pH to Inhibit Microglial Activation and Enhance Stroke Recovery

open access: yesAdvanced Science, EarlyView.
Amphiphilic sulfonated chitosan nanoparticles buffer endo/lysosomal acidity in microglia by limiting V‐ATPase membrane recruitment and restoring endosomal homeostasis. Following systemic administration, they accumulate in the ischemic hemisphere partly through association with infiltrating immune cells, suppress TLR3/IRF3 and TLR4/NF‐κB signaling ...
Xuanlin Wang   +4 more
wiley   +1 more source

Monolayer MoS2 With Ultrahigh Piezoelectricity: From ALD Dose Control to Device Performance

open access: yesAdvanced Science, EarlyView.
This study demonstrates that controlling precursor dosages in atomic layer deposition (ALD) serves to regulate ultrathin oxide quality, which in turn determines sulfurization behavior and MoS2 monolayer continuity. The resulting continuous, low‐defect monolayers enable improved piezoelectric performance and support a flexible slippage sensor, linking ...
Yun Li   +16 more
wiley   +1 more source

The Bandwidths of a Matrix. A Survey of Algorithms

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2014
The bandwidth, average bandwidth, envelope, profile and antibandwidth of the matrices have been the subjects of study for at least 45 years. These problems have generated considerable interest over the years because of them practical relevance in areas ...
Mafteiu-Scai Liviu Octavian
doaj   +1 more source

A Synthetic Platform for Antibody Junctional Diversification Beyond Natural Constraints

open access: yesAdvanced Science, EarlyView.
ARESEC is a synthetic platform that reconstructs functional V(D)J recombination in HEK293T cells. By introducing RSS elements and co‐expressing RAG1/2 and TdT across all three antibody CDRs, it enables programmable junctional diversification and direct generation of high‐affinity variants targeting PD‐1/PD‐L1, overcoming the evolutionary constraints of
Wang Liu   +3 more
wiley   +1 more source

Ischemic preconditioning: Protection against myocardial necrosis and apoptosis

open access: yes, 2007
Efstathios K Iliodromitis1, Antigone Lazou2, Dimitrios Th Kremastinos112nd University Department of Cardiology, Medical School, University of Athens, Greece; 2Lab of Animal Physiology, School of Biology, Aristotle University of Thessaloniki ...
Antigone Lazou   +2 more
core  

Modular Metamaterials for Adaptable MRI Signal Control: Combining Dipole Array With a New Hexagon‐Based Artificial Dielectrics

open access: yesAdvanced Science, EarlyView.
A flexible, hexagonally packed artificial dielectric providing a wide range of effective permittivities (εr ≈ 30–1400) without lumped elements was developed for clinical and ultra‐high‐field MRI. Combined with modular passive‐dipole arrays, the system enables adaptable RF field shaping through electric‐ and magnetic‐dipole tuning.
Santosh Kumar Maurya   +2 more
wiley   +1 more source

Repetitive Hypoxic Preconditioning Attenuates Renal Ischemia/Reperfusion Induced Oxidative Injury Via Upregulating Hif-1 Alpha-Dependent Bcl-2 Signaling

open access: yes, 2011
In response to ischemic/hypoxic preconditioning, tissues/ organs exhibit protective responses to subsequent and severe ischemic stress. We hypothesized that repetitive hypoxic preconditioning (RHP) may provide long-lasting protection than single ...
楊芝青;林隆慶;吳明修;鄭劍廷;賴明坤   +1 more
core  

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