Results 131 to 140 of about 425,854 (315)

Prediction of Seizure Outcome Using Combinations of Four Noninvasive Presurgical Modalities in Magnetic Resonance Imaging-negative Focal Intractable Epilepsy

open access: yesNeurologia Medico-Chirurgica
In focal epilepsy cases, precise identification and resection of the epileptogenic zone increase the likelihood of achieving a seizure-free outcome. Nevertheless, localizing the source of epilepsy in magnetic resonance imaging-negative epilepsy cases ...
Rofat ASKORO   +8 more
doaj   +1 more source

Diagnóstico de reabsorção radicular por meio de tomografia computadorizada de feixe cônico: uma revisão da literatura [PDF]

open access: yes, 2013
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Curso de OdontologiaA perda da integridade do pré-cemento ou da pré-dentina torna o tecido mineralizado susceptível à ação das células clásticas, o que pode acarretar ...
Costa, Danielle Flor da
core  

Chiral Phase Change Nanomaterials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow   +11 more
wiley   +1 more source

Inconsistency in 9 mm bullets : correlation of jacket thickness to post-impact geometry measured with non-destructive X-ray computed tomography [PDF]

open access: yes, 2014
Fundamental to any ballistic armour standard is the reference projectile to be defeated. Typically, for certification purposes, a consistent and symmetrical bullet geometry is assumed, however variations in bullet jacket dimensions can have far reaching ...
Landheer, D.   +7 more
core  

Magnetic‐Field Control of Surface States in CoFe2O4 Thin Films for Nitrate Electroreduction to Ammonia

open access: yesAdvanced Functional Materials, EarlyView.
Magnetic‐field‐assisted CVD of heterometallic single‐source precursors modulates thin‐film surface electronic structure and interfacial charge transfer. Field‐grown (Cobalt ferrite‐1T)CF‐1T films exhibit stabilized electronic states, lower kinetic barriers, and markedly enhanced nitrate‐to‐ammonia electrocatalysis versus (Cobalt ferrite‐0T) CF‐0T ...
Touraj Karimpour   +11 more
wiley   +1 more source

Multimodal Perception and Machine Learning‐Empowered Human Machine Interfaces With Double‐Network Hydrogel Fibers

open access: yesAdvanced Functional Materials, EarlyView.
This work develops polyacrylamide‐alginate (PAM‐Alg) double‐network hydrogel fibers for multimodal perception and intelligent human‐machine interfaces. The covalent‐ionic network provides high strength, toughness, and stable conductivity. Easily woven into wearables and integrated with soft robots, the fibers enable object and temperature recognitions ...
Yujue Yang   +10 more
wiley   +1 more source

A Dual‐Functional Electrolyte Additive for Highly Reversible Zinc‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces tetrabutylammonium bromide (TBAB) as a dual‐function additive for aqueous zinc‐ion batteries. TBAB disrupts the hydrogen‐bond network of water while TBA+ adsorbs on Zn to improve interfacial wettability and regulate Zn2+ flux, resulting in suppressed dendrite growth and parasitic reactions. This synergy extended the lifespan of Zn|
Shirui Zhang   +9 more
wiley   +1 more source

Validation of OSEM algorithm for attenuation correction in cardiac SPECT studies [PDF]

open access: yes, 2005
Photon attenuation is believed to be one of the major causes of artefacts in cardiac SPECT studies and therefore should be corrected to improve the specificity of cardiac SPECT imaging for the detection of coronary artery disease.
Alenezi, Ahmed M
core  

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

open access: yesAdvanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk   +7 more
wiley   +1 more source

Variability of Child Rib Bone Hounsfield Units using in vivo Computed Tomography [PDF]

open access: yes, 2013
The variability assessment of the rib bone mechanical properties during the growth process is still missing. These properties could not be obtained in vivo on children.
SIDELKEIR, Zaki   +5 more
core  

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