Results 11 to 20 of about 395,400 (125)

Cooperation among phosphate-solubilizing bacteria, humic acids and arbuscular mycorrhizal fungi induces soil microbiome shifts and enhances plant nutrient uptake

open access: yesChemical and Biological Technologies in Agriculture, 2021
Background Increasing the presence of beneficial soil microorganisms is a promising sustainable alternative to support conventional and organic fertilization and may help to improve crop health and productivity.
Vincenza Cozzolino   +5 more
doaj   +1 more source

Cerebellum regulating cerebral functional cortex through multiple pathways in complete thoracolumbar spinal cord injury

open access: yesFrontiers in Neuroscience, 2022
The previous studies have found significant brain structural and functional changes in cerebral regions after spinal cord injury (SCI), but few studies have explored the cerebellar–cerebral circuit changes in SCI.
Weimin Zheng   +18 more
doaj   +1 more source

Meridional composite pulses for low-field magnetic resonance [PDF]

open access: yes, 2022
We discuss procedures for error-tolerant spin control in environments that permit transient, large-angle reorientation of magnetic bias field. Short sequences of pulsed, non-resonant magnetic field pulses in a laboratory-frame meridional plane are derived.
arxiv   +1 more source

Water-Soluble Lignins from Different Bioenergy Crops Stimulate the Early Development of Maize (Zea mays, L.)

open access: yesMolecules, 2015
The molecular composition of water-soluble lignins isolated from four non-food bioenergy crops (cardoon CAR, eucalyptus EUC, and two black poplars RIP and LIM) was characterized in detail, and their potential bioactivity towards maize germination and ...
Davide Savy   +4 more
doaj   +1 more source

170 Nanometer Nuclear Magnetic Resonance Imaging using Magnetic Resonance Force Microscopy [PDF]

open access: yesJ. Mag. Reson. 162, 336 (2003), 2002
We demonstrate one-dimensional nuclear magnetic resonance imaging of the semiconductor GaAs with 170 nanometer slice separation and resolve two regions of reduced nuclear spin polarization density separated by only 500 nanometers. This is achieved by force detection of the magnetic resonance, Magnetic Resonance Force Microscopy (MRFM), in combination ...
arxiv   +1 more source

Nuclear magnetic shielding in HD and HT [PDF]

open access: yesPhys. Rev. A 105, 042802 (2022), 2022
We perform a calculation of the nuclear magnetic shielding in HD and HT molecules, with complete and perturbative accounts for nuclear masses. From the difference in shielding, we obtain the deuteron and triton magnetic moments in agreement with the CODATA value, with the accuracy limited only by nuclear magnetic resonance measurements.
arxiv   +1 more source

Altered amide proton transfer weighted and diffusion signals in patients with multiple sclerosis: correlation with neurofilament light chain and disease duration

open access: yesFrontiers in Neuroscience, 2023
ObjectivesTo compare the signal alterations of amide proton transfer (APT), apparent diffusion coefficient (ADC), and fractional anisotropy (FA) in white matter (WM) lesions in multiple sclerosis (MS), compared with healthy controls (HCs), and to ...
Jing Huang   +14 more
doaj   +1 more source

LISA improves statistical analysis for fMRI

open access: yesNature Communications, 2018
Functional magnetic resonance imaging (fMRI) is a powerful technique for measuring human brain activity, but the statistical analysis of fMRI data can be difficult.
Gabriele Lohmann   +7 more
doaj   +1 more source

Integrated Positron Emission Tomography/Magnetic Resonance Imaging for Resting-State Functional and Metabolic Imaging in Human Brain: What Is Correlated and What Is Impacted

open access: yesFrontiers in Neuroscience, 2022
Integrated positron emission tomography (PET)/magnetic resonance imaging (MRI) could simultaneously obtain both functional MRI (fMRI) and 18F-fluorodeoxyglucose (FDG) PET and thus provide multiparametric information for the analysis of brain metabolism ...
Yi Shan   +15 more
doaj   +1 more source

Nuclear magnetic resonance spectroscopy as a dynamical structural probe of high pressure hydrogen [PDF]

open access: yesPhys. Rev. Lett. 122, 135501 (2019), 2019
An unambiguous crystallographic structure solution for the observed phases II-VI of high pressure hydrogen does not exist due to the failure of standard structural probes at extreme pressure. In this work we propose that nuclear magnetic resonance spectroscopy provides a complementary structural probe for high pressure hydrogen.
arxiv   +1 more source

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