Changes in microstructure of two ammonium-based protic ionic liquids proved by in situ variable-temperature 1 H NMR spectroscopy: influence of anion [0.03%]
原位可变温度氢-1核磁共振光谱研究两种铵𬭩型 protic 离子液体结构变化：阴离子的影响
Xiaochen Tang,Yingjie Xu,Xiao Zhu et al.
Xiaochen Tang et al.
In this work, changes in microstructure of two protic ionic liquids (PILs), namely n-butylammonium acetate (N4Ac) and n-butylammonium nitrate (N4NO3 ), are proved by in situ variable-temperature 1 H NMR spectroscopy at the temperature range...
On the importance of intramolecular hydrogen bond cooperativity in d-glucose - an NMR and QTAIM approach [0.03%]
关于D-葡萄糖分子内氢键协同作用的重要性——一种核磁共振和量子理论原子线性连结指标方法的研究
John S Lomas,Laurent Joubert
John S Lomas
The idea that hydrogen bond cooperativity is responsible for the structure and reactivity of carbohydrates is examined. Density functional theory and gauge-including atomic orbital calculations on the known conformers of the α and β anome...
A molecular mechanics and ab initio prediction of the 1 H chemical shifts of pinanes [0.03%]
用分子力学和从头算方法预测蒎烷的氢化学位移值
Raymond J Abraham,M Ashley Cooper
Raymond J Abraham
Molecular mechanics calculations plus the application of a refined Karplus equation gave the conformations of 19 pinanes. These range from a Y-shaped geometry in the apopinene and α-pinene series to a pseudo chair conformation in β-pinene...
How to face the low intrinsic sensitivity of 2D heteronuclear NMR with fast repetition techniques: go faster to go higher! [0.03%]
如何利用快速重复技术应对二维异核NMR固有灵敏度低的问题：更快以达到更高！
Jonathan Farjon
Jonathan Farjon
Nuclear magnetic resonance (NMR) is one of the most widely used analytical techniques in numerous domains where molecules are objects of investigation. However, major limitations of multidimensional NMR experiments come from their low sensi...
Construction and 13 C hyperpolarization efficiency of a 180 GHz dissolution dynamic nuclear polarization system [0.03%]
一套用于实现溶解动态核极化技术的140GHz和180GHz固态电子顺磁共振系统及性能测试
Andhika Kiswandhi,Peter Niedbalski,Christopher Parish et al.
Andhika Kiswandhi et al.
Dynamic nuclear polarization (DNP) via the dissolution method has become one of the rapidly emerging techniques to alleviate the low signal sensitivity in nuclear magnetic resonance (NMR) spectroscopy and imaging. In this paper, we report o...
Transient effect determination of spin-lattice (TEDSpiL) relaxation times using continuous wave NMR [0.03%]
连续波NMR弛豫时间的瞬时效应决定（TEDSpiL）测定法
Robert H Morris,Nur Mostafa,Steven Parslow et al.
Robert H Morris et al.
Broadband RF-amplitude-dependent flip angle pulses with linear phase slope [0.03%]
宽带RF幅度相关、线性相位斜率的翻转角脉冲
Martin R M Koos,Hannes Feyrer,Burkhard Luy
Martin R M Koos
Pulse sequences in NMR spectroscopy sometimes require the application of pulses with effective flip angles different from 90° and 180°. Previously (Magn. Reson. Chem. 2015, 53, 886-893), offset-compensated broadband excitation pulses with...
Facilitating the performance of qNMR analysis using automated quantification and results verification [0.03%]
利用自动化定量和结果验证技术促进qNMR分析性能
Yulia B Monakhova,Bernd W K Diehl
Yulia B Monakhova
Quantitative nuclear magnetic resonance (qNMR) is considered as a powerful tool for measuring the absolute amount of small molecules in complex mixtures. However, verification of the accuracy of such quantification is not a trivial task. In...
SpecPad: device-independent NMR data visualization and processing based on the novel DART programming language and Html5 Web technology [0.03%]
基于DART编程语言和Html5网络技术的SpecPad：独立于设备的NMR数据可视化与处理
Bruno Guigas
Bruno Guigas
SpecPad is a new device-independent software program for the visualization and processing of one-dimensional and two-dimensional nuclear magnetic resonance (NMR) time domain (FID) and frequency domain (spectrum) data. It is the result of a ...
Probing the interaction of the potassium channel modulating KCNE1 in lipid bilayers via solid-state NMR spectroscopy [0.03%]
利用固態核磁共振光譜研究脂質雙層中調節钾通道的KCNE1相互作用
Rongfu Zhang,Indra D Sahu,Raven G Comer et al.
Rongfu Zhang et al.
KCNE1 is known to modulate the voltage-gated potassium channel α subunit KCNQ1 to generate slowly activating potassium currents. This potassium channel is essential for the cardiac action potential that mediates a heartbeat as well as the ...