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

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,...

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Recent progress in fragment-based drug discovery facilitated by NMR spectroscopy

Considerable developments have been observed in fragment-based lead/drug discovery (FBLD/FBDD) recently, with four drugs approved and many others under investigation. Nuclear magnetic resonance (NMR)...

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Solid-state NMR in the field of drug delivery: State of the art and new perspectives

In the last decades, a variety of nuclear magnetic resonance (NMR) techniques have been applied with success in the field of advanced functional materials, including the important area of drug delivery....

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Second-order phase correction of NMR spectra acquired using linear frequency-sweeps

NMR spectra acquired with experiments using frequency-sweeps such as the wide-band uniform-rate smooth truncation (WURST) spin-echo and Carr-Purcell-Meiboom-Gill (CPMG) sequences cannot be absorptively...

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Application of ammonia probe-assisted solid-state NMR technique in zeolites and catalysis

Solid-state NMR (ssNMR) spectroscopy is a powerful technique for characterizing the surface sites of solid acids and organic intermediates formed during the acid catalyzed reaction. As a very useful...

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DNA binding mechanism of WhiB4 from Mycobacterium tuberculosis

Mycobacterium tuberculosis (Mtb), the pathogen of tuberculosis, has latently infected about one-third of the world's population and may lead to severe clinical symptoms and death. The WhiB4 protein,...

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Progresses of hyperpolarized 129Xe NMR application in porous materials and catalysis

129Xe NMR has been proven to be a powerful tool to investigate the structure of porous materials. Xenon is a monatomic noble gas which could be used as a probe due to the extremely sensitive to its...

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Evaluation of injuries caused by coronavirus disease 2019 using multi-nuclei magnetic resonance imaging

The ongoing pandemic of coronavirus disease 2019 (COVID-19) has been a great burden for the healthcare system in many countries because of its high transmissibility, severity, and fatality. Chest radiography...

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Specific protein-urea interactions

The mechanism of urea's action in protein denaturation remains largely unknown. To provide an experimental basis for molecular dynamics (MD) simulations on urea-protein interactions, we investigated...

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Utilizing 3D DOSY NMR in the characterization of organic compounds in coal chemical wastewater

Coal chemical wastewater (CCW) with the features of high toxicity and poor biodegradability is a big issue in environmental remediation, posing a great threat to aquatic ecosystems and to human beings....

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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...

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Conformational dynamics in GPCR signaling by NMR

G-protein-coupled receptors (GPCRs) mediate a wide range of cellular responses to various ligands or stimuli, and are the most important drug targets associated with human diseases. While major advances...

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Active shim coils design for Halbach magnet based on inverse boundary element method

With advantages of small volume, high field strength, and compact stray field, the Halbach array magnet is of great potential in desktop NMR applications. However, field inhomogeneity poses a main obstacle...

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Mechanisms of antimicrobial peptides as characterized by solid-state NMR

Antimicrobial peptides (AMP) are small proteins that play critical roles in host defense against microbe invasion. Many AMPs disrupt the cellular membrane of microbe, while the mechanism of action of...

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On the use of residual dipolar couplings in multi-state structure calculation of two-domain proteins

Residual dipolar couplings (RDCs) are powerful nuclear magnetic resonance (NMR) probes for the structure calculation of biomacromolecules. Typically, an alignment tensor that defines the orientation...

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NMR used to study the side-reactions between peroxides and antioxidants during the reactive extrusion process of the impact polypropylene

Side reaction pathways are observed to occur between antioxidants and peroxide during the processing of multiple resin grades mediated by controlled peroxide-induced degradation of impact polypropylene....

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Ringing cancellation in Carr-Purcell-Meiboom-Gill-type sequences

We propose a four-step phase cycling scheme that can cancel ringings from both the excitation and the refocusing pulses in Carr-Purcell-Meiboom-Gill (CPMG) measurements. It allows accurate measurements...

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On the use of cross polarization in solid-state NMR: 1H spin-lock versus adiabatic demagnetization in the rotating frame

Cross polarization (CP) is a widely used solid-state nuclear magnetic resonance (NMR) technique for enhancing the polarization of dilute S spins from much larger polarization of abundant I spins such...

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A green route for the preparation of layered double hydroxides from basic magnesium carbonate

Layered double hydroxides (LDHs) have received extensive attention in many fields such as catalysis, environmental management and medical applications. Typically, expensive soluble metal salts are commonly...

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Nuclear magnetic resonance studies of organic-inorganic composite solid electrolytes

Solid electrolytes have received widespread attention due to their higher safety than liquid electrolytes in the past decades. In particular, organic-inorganic composite solid electrolytes (CSEs) in...

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Study on the synthesis of spin labeled poly(styrene-co-maleic acid)s and their segmental motion

Study of the segmental mobility of polymer chains is important when the polymer is used as drag reduction agents of crude oil. Electron spin resonance (ESR) spectroscopy can provide important information...

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Probe-assisted NMR: Recent progress on the surface study of crystalline metal oxides with various terminated facets

The development of metal oxides with specific facet exposure for better catalytic performance in targeted applications has been well-documented. However, the understanding of surface structure-activity...

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The parallel tetrameric DNA G-quadruplex formed by the two-repeat C9orf72 GGGGCC sequence in solution

The abnormal expansion of G-rich hexanucleotide repeat, GGGGCC (G4C2), in chromosome 9 open reading frame 72 (C9orf72) is known to be the prevailing genetic cause of two fatal degenerative neurological...

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The study of electrochemical cycle for LiCoO2 by dual-mode EPR

Dual-mode electron paramagnetic resonance (EPR) spectroscopy was employed to analyze redox mechanisms in lithium cobalt oxide LiCoO2 (LCO) cathode material during delithiation and lithiation. It was...

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Characterization of the acidity and basicity of green solvents by NMR techniques

The acidity and basicity of the solvents can influence the reaction outcome notably, and hence the precise measurement of pH is important for reaction. However, not all the pH values of organic solvents...

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