Results 31 to 40 of about 259,843 (288)

Low-field thermal mixing in [1-13C] pyruvic acid for brute-force hyperpolarization [PDF]

open access: yes, 2016
We detail the process of low-field thermal mixing (LFTM) between 1H and 13C nuclei in neat [1-13C] pyruvic acid at cryogenic temperatures (4–15 K). Using fast-field-cycling NMR, 1H nuclei in the molecule were polarized at modest high field (2 T) and then
Abragam   +44 more
core   +1 more source

Mechanisms underlying limited soil carbon gains in perennial and cover‐cropped bioenergy systems revealed by stable isotopes

open access: yesGCB Bioenergy, 2020
Removal of biomass for bioenergy production may decrease soil organic carbon. While perennials or cover‐cropped grains often have greater root production than annual grain crops, they variably impact soil carbon and underlying mechanisms remain unclear ...
Chenglong Ye, Steven J. Hall
doaj   +1 more source

Detection of osteoarthritis in knee and hip joints by fast field‐cycling NMR [PDF]

open access: yesMagnetic Resonance in Medicine, 2011
AbstractIt is known that in the early stages of osteoarthritis, the concentration of glycan proteins decreases in articular cartilage. This phenomenon is under active research to develop a means to characterize osteoarthritis accurately in the early stages of the disease, when still reversible.
Lionel M, Broche   +2 more
openaire   +2 more sources

A New Method and Circuit of Ringing Suppression for Low-field NMR Instruments

open access: yesChinese Journal of Magnetic Resonance, 2023
Accelerating the release of the antenna residual energy to weaken the antenna ringing signal is beneficial to shorten the echo time (TE) of low-field nuclear magnetic resonance (NMR) instruments, thus improving the measurement resolution and signal-to ...
SHI Guanghui   +5 more
doaj   +1 more source

The use of contrast agents with fast field-cycling magnetic resonance imaging [PDF]

open access: yesPhysics in Medicine and Biology, 2010
Fast field-cycling (FFC) MRI allows switching of the magnetic field during an imaging scan. FFC-MRI takes advantage of the T(1) dispersion properties of contrast agents to improve contrast, thus enabling more sensitive detection of the agent. A new contrast agent designed specifically for use with FFC was imaged using both a homebuilt FFC-MRI system ...
Hógáin DO   +4 more
openaire   +4 more sources

A multi-scale model for hair follicles reveals heterogeneous domains driving rapid spatiotemporal hair growth patterning

open access: yeseLife, 2017
The control principles behind robust cyclic regeneration of hair follicles (HFs) remain unclear. Using multi-scale modeling, we show that coupling inhibitors and activators with physical growth of HFs is sufficient to drive periodicity and excitability ...
Qixuan Wang   +31 more
doaj   +1 more source

Chromism-Integrated Sensors and Devices for Visual Indicators

open access: yesSensors, 2022
The bifunctionality of chromism-integrated sensors and devices has been highlighted because of their reversibility, fast response, and visual indication. For example, one of the representative chromism electrochromic materials exhibits optical modulation
Hyunho Seok   +8 more
doaj   +1 more source

Clinical applications of Fast Field‐Cycling techniques [PDF]

open access: yes, 2014
Peer reviewedPublisher ...
Broche, Lionel   +5 more
core  

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Rapid Field-Cycling MRI using Fast Spin-Echo [PDF]

open access: yes, 2013
The author acknowledges funding from the EPSRC through the Centre for Doctoral Training in Integrated Magnetic Resonance.Non peer reviewedPublisher ...
Broche, Lionel   +2 more
core  

Home - About - Disclaimer - Privacy