Results 81 to 90 of about 2,750 (239)

Ortho-parahydrogen catalyst test facility

IOP Conference Series: Materials Science and Engineering
With the growing interest in hydrogen as one pillar of the future energy economy, the relevance of hydrogen liquefaction for storage and transportation is increasing rapidly.
S. Eisenhut, C. Haberstroh
semanticscholar   +1 more source

SAMBADENA Hyperpolarization of 13C‐Succinate in an MRI: Singlet‐Triplet Mixing Causes Polarization Loss

ChemistryOpen, 2019
The signal enhancement provided by the hyperpolarization of nuclear spins of biological molecules is a highly promising technique for diagnostic imaging.
Stephan Berner, Andreas B. Schmidt, Mirko Zimmermann, Dr. Andrey N. Pravdivtsev, Dr. Stefan Glöggler, Prof. Dr. Dr. h.c. Jürgen Hennig, PD Dr. Dominik von Elverfeldt, Prof. Dr. Jan‐Bernd Hövener   +7 more
doaj   +1 more source

Efficient SABRE-SHEATH Hyperpolarization of Potent Branched-Chain-Amino-Acid Metabolic Probe [1-¹³C]ketoisocaproate

Metabolites, 2023
Efficient 13C hyperpolarization of ketoisocaproate is demonstrated in natural isotopic abundance and [1-13C]enriched forms via SABRE-SHEATH (Signal Amplification By Reversible Exchange in SHield Enables Alignment Transfer to Heteronuclei).
Isaiah Adelabu, Md Raduanul H. Chowdhury, Shiraz Nantogma, Clementinah Oladun, Firoz Ahmed, Lukas Stilgenbauer, Marianna Sadagurski, Thomas Theis, Boyd M. Goodson, Eduard Y. Chekmenev   +9 more
doaj   +1 more source

Real-Time Metabolic Magnetic Resonance Spectroscopy of Pancreatic and Colon Cancer Tumor-Xenografts with Parahydrogen Hyperpolarized 1-13C Pyruvate-d3.

Chemistry
Parahydrogen-induced polarization (PHIP) is an emerging technique to enhance the signal of stable isotope metabolic contrast agents for Magnetic Resonance (MR).
Lisa M. Fries, T. Hune, Sonja Sternkopf, Salvatore Mamone, Kim Lucia Schneider, Ramona Schulz-Heddergott, Dorothea Becker, S. Glöggler   +7 more
semanticscholar   +1 more source

Direct enhancement of nuclear singlet order by dynamic nuclear polarization [PDF]

, 2012
Hyperpolarized singlet order is available immediately after dissolution DNP, avoiding need for additional preparation steps.
Marco-Rius, Irene, Tayler, Michael C.D., Levitt, Malcolm H., Brindle, Kevin M., Pileio, Giuseppe, Kettunen, Mikko I.   +5 more
core   +1 more source

Diazirines Beyond Photoaffinity Labeling: A Comprehensive Overview of Applications in Biological Sciences, Materials Chemistry, and NMR‐Spectroscopy

Angewandte Chemie, Volume 138, Issue 4, 22 January 2026.
Diazirines are three‐membered, nitrogen‐containing heterocycles that decompose under light or heat to generate carbenes. For the past two decades, they have served mainly as minimally invasive tags in photoaffinity labeling (PAL). More recently, their value as versatile carbene precursors has been recognized.
Dominik Schnalzer, Viktor Savic, Clemens Cziegler, Michael Schnürch, Marko D. Mihovilovic   +4 more
wiley   +2 more sources

Long nuclear spin coherence times for molecules trapped in high-purity solid parahydrogen

Physical Review Research
We measure the ensemble transverse relaxation time (T_{2}^{*}) and spin-echo coherence time (T_{2}) of the proton spin of HD molecules trapped in solid parahydrogen.
Alexandar P. Rollings, Jonathan D. Weinstein   +1 more
doaj   +1 more source

Heterogeneous Parahydrogen Pairwise Addition to Cyclopropane [PDF]

ChemPhysChem, 2018
AbstractHyperpolarized gases revolutionize functional pulmonary imaging. Hyperpolarized propane is a promising emerging contrast agent for pulmonary MRI. Unlike hyperpolarized noble gases, proton‐hyperpolarized propane gas can be imaged using conventional MRI scanners with proton imaging capability.
Oleg G. Salnikov, Kirill V. Kovtunov, Panayiotis Nikolaou, Larisa M. Kovtunova, Valerii I. Bukhtiyarov, Igor V. Koptyug, Eduard Y. Chekmenev   +6 more
openaire   +2 more sources

Rapid Catalyst Capture Enables Metal-Free Parahydrogen-Based Hyperpolarized Contrast Agents

, 2018
Hyperpolarization techniques based on the use of parahydrogen provide orders of magnitude signal enhancement for magnetic resonance spectroscopy and imaging.
Hao, Zhang, Xingyang, Li, Danila, Barskiy, Lucia, Ke, Vincent, Stevenson, Nevin, Widarman, Ashley, Truxal, Alexander, Pines   +7 more
core   +1 more source

A Modified Balanced Steady State Free Precession Sequence for Overhauser Magnetic Resonance Imaging

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Low‐ and ultralow‐field magnetic resonance imaging (ULF MRI) have inherently low signal‐to‐noise ratio (SNR) by design. Overhauser dynamic nuclear polarization (ODNP) stands out as an effective solution for continuous signal enhancement.
Kai Buckenmaier, Friedemann Bullinger, Georgiy Alekseevich Solomakha, Marcel Schneider, Jörn Engelmann, Philipp Pohlmann, Pavel Povolni, Laura Kuebler, André Ferreira Martins, Klaus Scheffler   +9 more
wiley   +1 more source