Results 101 to 110 of about 110,310 (316)

Reaction Mechanism of H2C2O4 Oxidized by HNO2 via Mn2+ as Catalyst

open access: yesYuanzineng kexue jishu, 2023
H2C2O4 is widely used in spent fuel reprocessing. For example, in order to recovery plutonium oxalate precipitated mother liquor before returning, it is necessary to reduce the H2C2O4 concentration from 0.1 mol/L to about 10-4 mol/L. Among the methods of
HAO Shuai;LI Bin;LI Xianjun;LIU Zhanyuan;LIU Min;JIANG Dongmei;XIA Liangshu
doaj  

EPR on Radiation-Induced Defects in SiO2

open access: yes, 2014
Continuous-wave electron paramagnetic resonance (EPR) spectroscopy has been the technique of choice for the studies of radiation-induced defects in silica (SiO2) for 60 years, and has recently been expanded to include more sophisticated techniques such ...
Mashkovtsev RI   +9 more
core   +1 more source

SMARANDACHE HYPOTHESIS: EVIDENCES, IMPLICATIONS AND APPLICATIONS [PDF]

open access: yes, 2000
In 1972, Smarandache proposed that there is not a limit speed on the nature, based on the EPR-Bell (Einstein, Podolsky, Rosen, Bell) paradox. Although it appears that this paradox was solved recently, there are many other evidences that guide us to ...
Motta, Leonardo
core   +1 more source

Endogenous Engineering Reprograms Extracellular Vesicles for Enhanced Therapeutic Function

open access: yesAdvanced Science, EarlyView.
This review explains how Extracellular vesicles‐producing cells can be endogenously engineered to load therapeutic proteins and nucleic acids. We summarize physiological and genetic strategies that harness native sorting pathways for selective cargo loading.
Jinghui Wang   +10 more
wiley   +1 more source

Time-resolved EPR investigation on the hyperpolarization of radicals by photoexcited triplet states

open access: yes, 2023
reservedThe purpose of this thesis is to provide a methodology to improve the sensitivity of Pulsed Dipolar Electron Paramagnetic Resonance (EPR) techniques by taking advantage of the spin hyperpolarization phenomenon in order to accurately determine ...
PANAZZOLO, LUCA
core  

A Hydrogen‐Releasing Nanozyme Engineers a Mitochondrial ROS Amplifier for Self‐Sustaining Catalytic Immunotherapy

open access: yesAdvanced Science, EarlyView.
We developed a RhPd‐H nanozyme that integrates enhanced POD‐mimetic catalytic activity with thermally triggered H2 release. H2 shields and reprograms mitochondria to continuously leak endogenous ·O2−. This dual‐path ROS spatially and temporally disrupts redox homeostasis, inducing persistent oxidative stress for tumor suppression and antitumor immunity,
Mingfan Shi   +12 more
wiley   +1 more source

3D‐Printed Metal‐Supported MOF‐Heteropoly Acid Nanozyme for High‐Performance Peroxidase‐Mimic Activity and Ultra‐Sensitive Glucose Detection

open access: yesAdvanced Science, EarlyView.
A hierarchically structured Fe‐BTC‐PMA immobilized 3D‐printed platform is engineered as a robust artificial enzyme for colorimetric glucose sensing. The hybrid architecture efficiently activates H2O2 to drive TMB oxidation. This integrated system enables sensitive, reusable, and scalable detection with enhanced catalytic stability and analytical ...
Paramita Koley   +10 more
wiley   +1 more source

Biomimetic Polymerization of Tellurocysteine: Breaking the Natural Amino Acid Radioprotection Limitation

open access: yesAdvanced Science, EarlyView.
Inspired by natural amino acid polymer‐melanin systems, this study strategically incorporated tellurocysteine to develop advanced radiation‐shielding materials. This approach transformed the primary interaction mechanism between melanin‐based materials and incident photons from Compton scattering to the photoelectric effect. Tellurocysteine‐polymerized
Wei Chen   +6 more
wiley   +1 more source

Exploiting the Symmetry of the Resonator Mode to Enhance PELDOR Sensitivity.

open access: yes, 2014
Pulsed electron paramagnetic resonance (EPR) spectroscopy using microwaves at two frequencies can be employed to measure distances between pairs of paramagnets separated by up to 10 nm.
Mei Wai Fung   +11 more
core   +1 more source

ROS‐Responsive Nanobubbles for Dual‐Enhanced Ultrasound and Magnetic Resonance Imaging of Tumor Oxidative Stress

open access: yesAdvanced Science, EarlyView.
We report the development of biotinylated PEGylated bilirubin‐coated perfluoropentane (bt‐PEG‐BR@PFP) nanobubbles, a novel class of ROS‐activatable and dual‐modality contrast agents that amplify both ultrasound (US) and magnetic resonance imaging (MRI) signals in response to elevated ROS.
Wonsik Jung   +6 more
wiley   +1 more source

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