Results 81 to 90 of about 3,223,690 (300)

Subnanometric MoOx clusters limit overoxidation during photocatalytic CH4 conversion to oxygenates over TiO2

open access: yesNature Communications
Direct photocatalytic oxidation of methane to high-value-added oxygenated products remains a great challenge due to the unavoidable overoxidation of target products.
Panpan Wu   +7 more
doaj   +1 more source

Microbiome-gut-brain axis contributes to patients and Bama miniature pigs with acute large ischemic stroke

open access: yesFrontiers in Neuroscience
Acute large hemispheric infarction (ALHI) is an overwhelming emergency with a great challenge of gastrointestinal dysfunction clinically. Here, we initially proposed delayed bowel movements as the clinical phenotype of strike to gut-brain axis (GBA) in ...
Dazhi Deng   +17 more
doaj   +1 more source

One‐Step Curcumin‐Mediated Multiphoton Lithography for Bioactive 3D Scaffolds

open access: yesAdvanced Functional Materials, EarlyView.
Curcumin‐mediated multiphoton lithography enables one‐step fabrication of highly architected complex gelatin methacryloyl scaffolds by exploiting curcumin as a multifunctional bioactive photoinitiator. The resulting 3D structures support mesenchymal stem cell adhesion, proliferation, and migration, while exhibiting dual antibacterial activity through ...
Myrto Charitaki   +7 more
wiley   +1 more source

Real-time motion and main magnetic field correction in MR spectroscopy using an EPI volumetric navigator [PDF]

open access: yes, 2011
In population groups where subjects do not lie still during Magnetic Resonance Spectroscopy (MRS) scans, real-time volume of interest (VOI), frequency, and main magnetic field (B0) shim correction may be necessary.
Hess, Aaron T
core   +1 more source

Sulfur‐Free Ultrahigh‐Refractive‐Index Polymers Enabled by Densely Packed Oxygen‐Bridged Dibenzofuran‐Cardo Architectures

open access: yesAdvanced Functional Materials, EarlyView.
A new class of sulfur‐free, oxygen‐bridged dibenzofuran‐based polymers is developed for ultrahigh‐refractive‐index applications. The rigid π‐extended architecture and enhanced molecular polarizability enable exceptional optical performance, combining refractive indices up to 1.848 with high Abbe numbers and full visible transparency. This work offers a
Hend A. Hegazy   +5 more
wiley   +1 more source

MFS of Fe-based nanocrystalline powder cores influenced by annealing temperature(退火温度对Fe基纳米晶粉芯磁致频移特性影响的研究)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2002
研究了充有不同温度退火Fe基纳米晶粉芯LC回路的磁致频移特性(MFS),发现充有不同温度退火Fe基纳米晶粉芯LC回路的磁致频移不同,充有经600 ℃退火Fe基纳米晶粉芯LC回路的磁致频移最灵敏.
FANGYun-zhang(方允樟)   +2 more
doaj   +1 more source

Magnetic Resonance Spectroscopy [PDF]

open access: yesNature, 1962
NMR and EPR Spectroscopy Papers presented at Varian's Third Annual Workshop on Nuclear Magnetic Resonance and Electron Paramagnetic Resonance, held at Palo Alto, California. By the NMR–EPR Staff of Varian Associates. Pp. viii + 288. (London and New York: Pergamon Press, 1960.) 80s. net.
openaire   +1 more source

Spatially Regulated Lithium Plating via Li2O‐Rich Interphase Enables Durable Fast‐Charging Hybrid Lithium Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A Li2O‐rich solid electrolyte interphase (SEI) is engineered on graphite through a propylene carbonate‐based electrolyte to spatially regulate Li plating. The homogeneous interphase lowers Li nucleation barriers, promotes conformal Li deposition around graphite particles, and suppresses dendritic accumulation, enabling durable hybrid Li‐ion/Li‐metal ...
Robert Kuphal   +8 more
wiley   +1 more source

Gelatinous Transformation of Bone Marrow Mimicking Malignant Marrow-Replacing Lesion on Magnetic Resonance Imaging in a Patient without Underlying Devastating Disease [PDF]

open access: yes, 2018
Gelatinous transformation of bone marrow is characterized by hypoplasia of fat cells with focal loss of hematopoietic cells and deposition of extracellular gelatinous substances.
유연화   +3 more
core   +1 more source

Development of Low-noise Preamplifier for Low-field NMR

open access: yesChinese Journal of Magnetic Resonance
Nuclear magnetic resonance (NMR) technology enables the acquisition of multi-scale molecular dynamics by characterizing the variation of relaxation times under different magnetic field conditions, thereby offering a critical detection methodology for ...
LI Keyan   +5 more
doaj   +1 more source

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