Results 1 to 10 of about 216,771 (141)
StereoPHIP: Stereoselective Parahydrogen-Induced Polarization. [PDF]
Angew Chem Int Ed Engl, 2023 AbstractParahydrogen‐induced polarization (PHIP) followed by polarization transfer to 13C is a rapidly developing technique for the generation of 13C‐hyperpolarized substrates. Chirality plays an essential role in living systems and differential metabolism of enantiomeric pairs of metabolic substrates is well documented.
Huynh MT +4 more
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Iron-Catalyzed Parahydrogen Induced Polarization. [PDF]
J Am Chem Soc, 2023 Parahydrogen induced polarization (PHIP) can address the low sensitivity problem intrinsic to nuclear magnetic resonance spectroscopy. Using a catalyst capable of reacting with parahydrogen and substrate in either a hydrogenative or nonhydrogenative manner can result in signal enhancement of the substrate.
Najera DC, Fout AR.
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Fabricating an Electrospray Ionization Chip Based on Induced Polarization and Liquid Splitting [PDF]
Micromachines, 2021 The coupling of the microfluidic chip to mass spectrometry (MS) has attracted considerable attention in the area of chemical and biological analysis.
Lvhan Zhou +6 more
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Parahydrogen-Induced Polarization of Amino Acids. [PDF]
Angew Chem Int Ed Engl, 2021 AbstractNuclear magnetic resonance (NMR) has become a universal method for biochemical and biomedical studies, including metabolomics, proteomics, and magnetic resonance imaging (MRI). By increasing the signal of selected molecules, the hyperpolarization of nuclear spin has expanded the reach of NMR and MRI even further (e.g. hyperpolarized solid‐state
Pravdivtsev AN +4 more
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Constructing Multiphase‐Induced Interfacial Polarization to Surpass Defect‐Induced Polarization in Multielement Sulfide Absorbers [PDF]
Advanced ScienceThe extremely weak heterointerface construction of high‐entropy materials (HEM) hinders them being the electromagnetic wave (EMW) absorbers with ideal properties.
Shengchong Hui +3 more
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Chiral phonon induced spin polarization
Physical Review Research, 2023 The current understanding of chirality suggests the existence of a connection between structure and angular momentum, including spin. This is particularly emphasized in the chiral induced spin selectivity effect, where chiral structures act as spin ...
J. Fransson
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Shear induced polarization: collisional contributions
Journal of High Energy Physics, 2022 It has been realized that thermal shear plays a similar role as thermal vorticity in polarizing spin of particles in heavy ion collisions. We point out that shear has a funda- mental difference that it leads to particle redistribution in the medium.
Shu Lin, Ziyue Wang
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An experiment of spectral induced polarization
Annals of Geophysics, 1994 A Spectral Induced Polarization (SIP) survey was carried out in a mining test site in Sardinia (Italy). Measurements were developed along a profile by using an axial dipole-dipole array with 10 AB positions and 6 MN positions for cach AB.
L. Sambuelli +5 more
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Characterization of Induced Polarization Parameters from Electromagnetic Data using Evolutionary Approach [PDF]
Journal of Electromagnetic Engineering and Science, 2023 Electromagnetic methods are one of the most important tools for exploring the physical properties of scatterers. When the scattering object is polarizable, more information can be gained from electromagnetic measurements to determine the scatterer’s ...
Mohamed Elkattan, Aladin Kamel
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The role of geophysics in enhancing mine planning decision-making in small-scale mining [PDF]
Royal Society Open Science, 2020 Small-scale mining usually operates under high geological uncertainty conditions. This turns mine planning into a complex and sometimes inaccurate task, resulting in low productivity and substantial variability in the quantity and quality of the mineral ...
Ricardo Tichauer +3 more
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