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Open access

ISSN: 2772-5162
CN: 42-1917/O4
p-ISSN: 2097-0048

A hybrid deep learning framework based on VGG19 and U-Net for accurate brain tumor segmentation in MRI images

Accurate segmentation of brain tumors from magnetic resonance imaging (MRI) is a critical task in neuro-oncology, directly impacting diagnosis, treatment planning, and patient outcomes. This study presents...

The perspective of artificial intelligence for NMR

Nuclear magnetic resonance (NMR) spectroscopy is an indispensable analytical technique in chemistry, biology, and medicine, offering molecular-level structural and dynamic insights for metabolite identification...

A designed fusion tag improves soluble expression of nanobody in E. coli

Nanobodies are small, single-domain antibody fragments derived from camelid heavy-chain antibodies that offer high stability, strong binding affinity, and excellent potential for therapeutic and diagnostic...

New pulse sequence for improving cardiac black-blood and PSIR MRI quality in cases of arrhythmia

Most conventional cardiac MRI scans, which rely on electrocardiogram (ECG)-triggered segmented acquisition for k-space data, are highly sensitive to arrhythmia—a vulnerability that can induce severe...

Predictions and cross-center validation of IDH status and 1p/19q status in adult diffuse glioma with non-invasive magnetic resonance spectroscopy

This study developed and validated a non-invasive multi-metabolite magnetic resonance spectroscopy framework for preoperative molecular subtyping of adult diffuse gliomas. Using a cross-center, cross-vendor...

Applications and future development of solid-state nuclear magnetic resonance for investigating metal-organic frameworks

Metal-organic frameworks (MOFs) are a class of porous materials that feature permanent porosity, high crystallinity, and diverse structures. The 2025 Nobel Prize in Chemistry was awarded to three pioneering...

Rapid and quantitative 1D 13C NMR analysis of polypropylene tacticity with relaxation agent and proton polarization transfer

Polypropylene (PP) accounts for approximately 28.0% of the global polyolefin market, valued at $243.4 billion in 2022. Known for its lightweight, chemical resistance, cost-effectiveness, high strength...

Chemical exchange saturation transfer NMR: An analytical tool and its applications

NMR spectroscopy has proven to be a powerful tool for elucidating structural information and studying dynamic processes. Among NMR techniques, chemical exchange saturation transfer (CEST) is particularly...

Using 19F NMR to quantify enthalpy-entropy compensation in protein-protein interactions

Protein structural, stability, and functional equilibria are sensitive to the solution environment and governed by enthalpic and entropic contributions. NMR spectroscopy of suitably labeled- or isotopically...

Analysis of the electron transfer pathway in small laccase by EPR and UV–vis spectroscopy coupled with redox titration

Bacterial small laccases (SLAC) are promising industrial biocatalysts due to their ability to oxidize a broad range of substrates with exceptional thermostability and tolerance for alkaline pH. Electron...

Real-time NMR analysis of glutamine metabolism for screening anti-cancer agents in living cells

Metabolic reprogramming is a substantial obstacle for anticancer drug screening, as targeted therapeutics often lose efficiency due to the dynamic adaption of cancer cells. Glutamine metabolism in cancer...

Probing electronic structures of transition metal complexes using electron paramagnetic resonance spectroscopy

Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) has been widely employed to characterize transition metal complexes. However, because of the high degree of complexity of transition...

Going high-throughput: Dynamic conformations and interactions in vivo

Proteins are intrinsically dynamic molecules that continuously explore conformational ensembles to execute biological functions. Conventional structural biology methods rely on in vitro reconstitution...

Design of a fast broadband RF switch for multi-nuclear NMR in lithium-ion batteries

To address the need for observing the electrolyte influenced by dissolved metal ions during the charge and discharge process of lithium-ion battery, a fast-switching broadband radio frequency (RF) switch...

Accurate measurement of longitudinal paramagnetic relaxation enhancement through division after subtraction

Paramagnetic relaxation enhancement (PRE) provides valuable distance constraints with respect to unpaired electron for the structural and dynamic characterization of biomolecules. While transverse PRE...

RF power design optimization in MRI system

Magnetic resonance image quality and patient safety have been the focus of engineering and research ever since the invention of equipment in the early 1970s. In high field (or ultrahigh field) MRI systems,...

Language reorganization in brain arteriovenous malformations with fiber-based regional functional connectivity

Structure and function changes of language function processing in brain arteriovenous malformations (AVMs) have been investigated, while the alterations of brain connectivity remain unexplored. This...

Dynamic nuclear polarization and chemically induced hyperpolarization: Progress, mechanisms, and opportunities

Nuclear magnetic resonance (NMR) spectroscopy is a powerful and broadly used spectroscopic technique for characterizing molecular structures and dynamics. Yet the power of NMR is restricted by its inherently...

NMR methods for investigating functionally relevant biomolecular dynamics

The dynamics of biomolecules span across a wide range of timescales, reflecting the complexity of free energy landscapes of biomolecules. Among these, the microsecond-to-millisecond (μs–ms) timescale...

Structural anisotropy in celery stalks by microscopic MRI and polarized light microscopy

Structural anisotropy of celery stalks was studied using T2 anisotropy in microscopic MRI (μMRI) and supplemented by quantitative polarized light microscopy (PLM) at optical resolutions. Parenchyma,...

Rheo-NMR: A versatile hyphenated technique for capturing molecular dynamics and structure under flow

The general development of Rheo-NMR during the last four decades as well as selective hyphenated apparatuses is presented. Based on different magnet types, the current review is divided into two categories,...

Magnetic resonance imaging techniques for lithium-ion batteries: Principles and applications

Operando monitoring of internal and local electrochemical processes within lithium-ion batteries (LIBs) is crucial, necessitating a range of non-invasive, real-time imaging characterization techniques...

Progress in in-situ electrochemical nuclear magnetic resonance for battery research

A thorough understanding of the fundamental electrochemical and chemical processes in batteries is crucial to advancing energy density and power density. However, the characterizations of such processes...

Deciphering the hydrogen shuttle-mediated kinetic memory of Ge-related defects in UV-grade fused quartz via in situ EPR with 3D imaging

This study elucidates the photo-induced defect dynamics in standard UV-grade fused quartz (JGS2) by synergizing in situ electron paramagnetic resonance (EPR) spectroscopy with 3D volumetric imaging....

NMR insights into the role of urea in cellulose dissolution: A stoichiometric study of cellobiose in NaOH/urea aqueous solution

The mechanism underlying the enhanced dissolution of cellulose in NaOH/urea aqueous solutions has long been a subject of debate. In this study, high-resolution solution-state 1H and 13C DEPTq NMR spectroscopy...

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