Results 271 to 280 of about 2,700,521 (330)

Chiral Discrimination of Varied Ammonium Compounds through 1H NMR Using a Binuclear Ti Complex Sensor.

Organic Letters, 2020
A simple chiral binuclear titanium complex ((S)-Ti2L3Na4) was first prepared and served as an excellent chiral sensor for discriminating a variety of chiral ammoniums by 1H NMR.
Zhaofeng Sun, Zhongxiang Chen, Yanqi Wang, Xuebo Zhang, Jing Xu, Guangling Bian, Ling Song   +6 more
semanticscholar   +1 more source

Improved Halbach sensor for NMR scanning of drill cores

Magnetic Resonance Imaging, 2007
A lightweight Halbach magnet system for use in nuclear magnetic resonance (NMR) studies on drill cores was designed and built. It features an improved homogeneous magnetic field with a strength of 0.22 T and a maximum accessible sensitive volume. Additionally, it is furnished with a sliding table for automatic scans of cylindrical samples.
Sophia, Anferova, Vladimir, Anferov, Juliane, Arnold, Elena, Talnishnikh, Mihai A, Voda, Klaus, Kupferschläger, Peter, Blümler, Christoph, Clauser, Bernhard, Blümich   +8 more
openaire   +2 more sources

Thulium complex with DOPC as 1H NMR temperature sensor

Chemical Physics Letters, 2021
Abstract The goal of the research was to show the limits within which Tm3+ can be used as a linear response probe in lipid membrane. Temperature dependence of lanthanide-induced chemical shifts (LISs) were studied using the example of DOPC phospholipid by means of NMR spectroscopy.
Olga. Yu. Selyutina, Sergei .P. Babailov
openaire   +1 more source

Mobile sensor for high resolution NMR spectroscopy and imaging

Journal of Magnetic Resonance, 2009
In this work we describe the construction of a mobile NMR tomograph with a highly homogeneous magnetic field. Fast MRI techniques as well as NMR spectroscopy measurements were carried out. The magnet is based on a Halbach array built from identical permanent magnet blocks generating a magnetic field of 0.22T.
Ernesto, Danieli, Jörg, Mauler, Juan, Perlo, Bernhard, Blümich, Federico, Casanova   +4 more
openaire   +2 more sources

Quartz Crystal Temperature Sensor for MAS NMR

Journal of Magnetic Resonance, 1997
Abstract Quartz crystal temperature sensors (QCTS) were tested for the first time as wireless thermometers in NMR MAS rotors utilizing the NMR RF technique itself for exiting and receiving electro-mechanical quartz resonances. This new tool in MAS NMR has a high sensitivity, linearity, and precision.
openaire   +1 more source

Study on Mems Glassblown Cells for NMR Sensors

2019 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL), 2019
This paper presents a study on factors that affect the relaxation rates of noble gas atoms in miniaturized atomic vapor cells of Nuclear Magnetic Resonance (NMR) sensors. The cells are implemented using the micro-glassblowing process, [1]. Our study is focused on the cell construction material and the inner wall coating of the cells. We showed that the
Radwan M. Noor, Nikita Kulachenkov, Mohammad H. Asadian, Andrei M. Shkel   +3 more
openaire   +1 more source

High-Resolution NMR Spectroscopy with a Portable Single-Sided Sensor

Science, 2005
We report construction of a portable nuclear magnetic resonance sensor with a single-sided open probe design. The resulting magnetic field inhomogeneity is compensated by a pulse sequence that takes advantage of parallel inhomogeneity in the applied radio frequency field.
Juan, Perlo, Vasiliki, Demas, Federico, Casanova, Carlos A, Meriles, Jeffrey, Reimer, Alexander, Pines, Bernhard, Blümich   +6 more
openaire   +2 more sources

The Coupling Effect of Temperature and Rb-Xe in NMR Sensor

Measurement, 2023
Hao Tian, Zhanchao Liu, Lan Xiao, Yunkai Mao, Shuai Zhang, Junjie Zhang   +5 more
semanticscholar   +1 more source

A chiral sensor for recognition of varied amines based on 19F NMR signals of newly designed rhodium complexes.

Chemical Communications, 2019
A novel chiral octahedral rhodium complex containing fluorine has been developed to be an excellent chiral sensor for a variety of amines including diamines, monoamines, amino alcohols and amino acids, showing well distinguishable 19F NMR signals and an ...
Wei Wang, Xiaohan Xia, Guangling Bian, Ling Song   +3 more
semanticscholar   +1 more source

DEVELOPMENT OF A NONDESTRUCTIVE MOISTURE SENSOR USING PROTON NMR

Transactions of the ASAE, 1997
A low resolution 1H NMR (Nuclear Magnetic Resonance) system having 4.1 MHz was constructed to measure moisture contents (MC) of rice nondestructively. Mass-dependent and mass-independent models of the MC measurement were developed. The mass-dependent model had a Standard Error of Calibration (SEC) of 0.467% and a Standard Error of Prediction (SEP ...
null S. I. Cho, null C. H. Chung
openaire   +1 more source