PatentDOI
Adiabatic pulses for wideband inversion and broadband decoupling
TLDR
In this article, an inversion pulse for wideband application is obtained from a simple nonlinear amplitude modulation wherein the amplitude is modulated in accord with A(t)=A 0 {1-| sin βt| n } and the entire pulse is frequency modulated such that the phase varies as φ(t) =φ 0 + 1/2 kt 2About:
This article is published in Journal of Magnetic Resonance, Series A.The article was published on 1996-07-26. It has received 538 citations till now. The article focuses on the topics: Amplitude modulation & Amplitude.read more
Citations
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Journal ArticleDOI
Phosphorylation releases constraints to domain motion in ERK2
Yao Xiao,Thomas Lee,Michael P. Latham,Lisa R. Warner,Akiko Tanimoto,Arthur Pardi,Natalie G. Ahn,Natalie G. Ahn +7 more
TL;DR: The results show that domain movements in the MAP kinase ERK2 are inherently constrained until the enzyme is activated by phosphorylation, with the constraint located at the hinge region, which represents an important mode for dynamical regulation in ERK1.
Journal ArticleDOI
Accurate measurement of alpha proton chemical shifts of excited protein states by relaxation dispersion NMR spectroscopy.
TL;DR: The methodology presented is a valuable addition to a growing list of experiments for characterizing excited protein states that are difficult to study using the traditional techniques of structural biology.
Journal ArticleDOI
Static solid-state 14N NMR and computational studies of nitrogen EFG tensors in some crystalline amino acids
Luke A. O'Dell,Robert W. Schurko +1 more
TL;DR: The recently reported direct enhancement of integer spin magnetization (DEISM) methodology for signal enhancement in solid-state NMR of integer spins has been used to obtain static (14)N powder patterns from alpha-glycine, L-leucine and L-proline in relatively short experimental times, allowing accurate determination of the quadrupolar parameters.
Journal ArticleDOI
A new traceability scheme for the development of international system-traceable persistent organic pollutant reference materials by quantitative nuclear magnetic resonance
Takeshi Saito,Toshihide Ihara,Masayoshi Koike,Shinichi Kinugasa,Yoshinori Fujimine,Kazutoshi Nose,Tetsuya Hirai +6 more
TL;DR: In this paper, the purities of the POP compounds determined in this work were traceable to a single certified reference material (CRM), which is extremely attractive for reference material producers.
Journal ArticleDOI
Adiabatic rf pulses: applications to in vivo NMR
Robin A. de Graaf,Klaas Nicolay +1 more
TL;DR: In this article, the BIR-4 (B1-insensitive rotation) pulse was introduced and analyzed, and the amplitude and frequency modulation functions were derived and optimized over predetermined radio frequency amplitude and offset ranges.
References
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PatentDOI
Methods of, and apparatus for, proton decoupling in nuclear magnetic resonance spectroscopy
TL;DR: In this paper, a radio-frequency pulse is tuned to the frequency of the nuclear species, such as 1 H, to be decoupled or saturated and has a bandwidth adjusted to correspond to the entire chemical shift spectrum, minimizing the amount of radiofrequency power transmitted into a volume of the irradiated sample.
Patent
RF pulse cascade for the generation of NMR spectra
TL;DR: In this article, a method for generating a spectrum of NMR signals with rectangular characteristic in the frequency space by radiating a sequence of RF pulses onto a sample in the homogeneous magnetic field is presented.
PatentDOI
Method and apparatus for broadband decoupling in nuclear magnetic resonance with chirp pulses
Riqiang Fu,Geoffrey Bodenhausen +1 more
TL;DR: In this article, the authors proposed a method for broadband decoupling in nuclear magnetic resonance with chirp and other RF pulses, where the sample is placed in a static field, and a first cycle of chirps pulses are generated, followed by a second cycle of pulses generated by a supercycle of the first and second cycles.
Patent
Method for exciting transverse magnetization in magnetic resonance
TL;DR: In this article, a method for exciting transverse magnetization by irradiating a nuclear spin system subjected to a constant magnetic field with a frequency-modulated rf-pulse ("chirp"-pulse) and with a further frequency-modified rfpulse (further chirppulse), for refocusing the magnetization, is characterized in that the rf pulse-(P1) and the further pulse (P2) overlap each other in time at least partially.
PatentDOI
Method for determining optimized radio-frequency pulse shapes for selective excitation in magnetic resonance spectroscopy and imaging
TL;DR: In this paper, a spin system with a frequency-selective radio-frequency (RF) pulse was used for magnetic resonance spectroscopy and imaging, and the shape of the pulse was optimized.
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