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Gotowa bibliografia na temat „NMR Measurements”

Autor: Grafiati

Data publikacji: 6 września 2023

Data aktualizacji: 22 czerwca 2025

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Artykuły w czasopismach na temat "NMR Measurements"

Caprihan, A., and E. Fukushima. "Flow measurements by NMR." Physics Reports 198, no. 4 (1990): 195–235. http://dx.doi.org/10.1016/0370-1573(90)90046-5.

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Rollwitz, William. "4701705 NMR moisture measurements." Magnetic Resonance Imaging 6, no. 4 (1988): I. http://dx.doi.org/10.1016/0730-725x(88)90485-7.

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Kärger, Jörg, Dieter Freude, and Jürgen Haase. "Diffusion in Nanoporous Materials: Novel Insights by Combining MAS and PFG NMR." Processes 6, no. 9 (2018): 147. http://dx.doi.org/10.3390/pr6090147.

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Pulsed field gradient (PFG) nuclear magnetic resonance (NMR) allows recording of molecular diffusion paths (notably, the probability distribution of molecular displacements over typically micrometers, covered during an observation time of typically milliseconds) and has thus proven to serve as a most versatile means for the in-depth study of mass transfer in complex materials. This is particularly true with nanoporous host materials, where PFG NMR enabled the first direct measurement of intracrystalline diffusivities of guest molecules. Spatial resolution, i.e., the minimum diffusion path length experimentally observable, is limited by the time interval over which the pulsed field gradients may be applied. In “conventional” PFG NMR measurements, this time interval is determined by a characteristic quantity of the host-guest system under study, the so-called transverse nuclear magnetic relaxation time. This leads, notably when considering systems with low molecular mobilities, to severe restrictions in the applicability of PFG NMR. These restrictions may partially be released by performing PFG NMR measurements in combination with “magic-angle spinning” (MAS) of the NMR sample tube. The present review introduces the fundamentals of this technique and illustrates, via a number of recent cases, the gain in information thus attainable. Examples include diffusion measurements with nanoporous host-guest systems of low intrinsic mobility and selective diffusion measurement in multicomponent systems.

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Grombacher, Denys. "Modelling surface NMR spin-echo experiments in a heterogeneous B1 field." Geophysical Journal International 219, no. 2 (2019): 1395–404. http://dx.doi.org/10.1093/gji/ggz388.

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SUMMARY Surface nuclear magnetic resonance (NMR) measurements show great promise for characterization of subsurface water content, pore-sizes and permeability. The link between surface NMR and pore-size/permeability is founded in the connection between the NMR signal's time dependence and the geometry of the pore-space. To strengthen links between the NMR signal and pore-geometry multipulse surface NMR sequences have been developed to estimate the parameter T2, which carries a strong link to pore-geometry and has formed the basis for NMR-based permeability estimation in the petroleum industry for decades. Producing reliable subsurface characterizations from multipulse surface NMR measurements that measure T2 requires that the forward model is able to accurately predict the transverse magnetization at the time when the measurement occurs. Traditional surface NMR T2 forward models employ an analytic expression for the transverse magnetization, an expression developed in the context of laboratory NMR experiments conducted under conditions significantly different from surface NMR and which require several assumptions to simplify the underlying Bloch equation. To investigate the reliability of this analytic expression under surface NMR conditions, a synthetic comparison is performed where the analytic expression is contrasted against the transverse magnetization predicted from a solution of the full-Bloch equation without the same simplifying assumptions and which can appropriately weight heterogeneity in the applied and background magnetic fields. The comparison shows that the analytic expression breaks down in a range of conditions typical to surface NMR measurements.

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Rief, Martin, Reinhard Raggam, Peter Rief, et al. "Comparison of Two Nuclear Magnetic Resonance Spectroscopy Methods for the Measurement of Lipoprotein Particle Concentrations." Biomedicines 10, no. 7 (2022): 1766. http://dx.doi.org/10.3390/biomedicines10071766.

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Background: Measuring lipoprotein particle concentrations may help to improve cardiovascular risk stratification. Both the lipofit (Numares) and lipoprofile (LabCorp) NMR methods are widely used for the quantification of lipoprotein particle concentrations. Objective: The aim of the present work was to perform a method comparison between the lipofit and lipoprofile NMR methods. In addition, there was the objective to compare lipofit and lipoprofile measurements of standard lipids with clinical chemistry-based results. Methods: Total, LDL, and HDL cholesterol and triglycerides were measured with ß-quantification in serum samples from 150 individuals. NMR measurements of standard lipids and lipoprotein particle concentrations were performed by Numares and LabCorp. Results: For both NMR methods, differences of mean concentrations compared to ß-quantification-derived measurements were ≤5.5% for all standard lipids. There was a strong correlation between ß-quantification- and NMR-derived measurements of total and LDL cholesterol and triglycerides (all r > 0.93). For both, the lipofit (r = 0.81) and lipoprofile (r = 0.84) methods, correlation coefficients were lower for HDL cholesterol. There was a reasonable correlation between LDL and HDL lipoprotein particle concentrations measured with both NMR methods (both r > 0.9). However, mean concentrations of major and subclass lipoprotein particle concentrations were not as strong. Conclusions: The present analysis suggests that reliable measurement of standard lipids is possible with these two NMR methods. Harmonization efforts would be needed for better comparability of particle concentration data.

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Dillon, Patrick F., and Patrick R. Sears. "Capillary electrophoretic measurement of tissue metabolites." American Journal of Physiology-Cell Physiology 274, no. 3 (1998): C840—C845. http://dx.doi.org/10.1152/ajpcell.1998.274.3.c840.

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A method for the measurement of tissue metabolites from rabbit urinary bladder using capillary electrophoresis (CE) has been developed. The method generates a reproducible electropherogram containing >20 peaks, including NAD, NADH, lactate, UDP-glucose, phosphocreatine, creatine, ATP, ADP, GTP, and UTP, from <20 nl of extract solution generated from 1.1 nl (or ∼1.2 μg) of tissue in <40 min. Multiple samples from the same bladder produce SE comparable with enzymatic or nuclear magnetic resonance (NMR) measurements of metabolites: phosphorus-NMR measurement requires 106 more tissue than CE; individual enzymatic measurements using 100 μl/sample require 2,000 μl, a 105 greater volume than required by CE for the same number of metabolites. CE detects about three times more peaks than phosphorus-NMR on a similar time scale. Comparable measurements using enzymatic analysis would require ∼10 times longer. The combination of minimal tissue volume requirements, rapid measurement, and reproducibility makes CE a valuable tool in the investigation of simultaneous changes in multiple metabolites from minute tissue samples.

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Granger, P., M. Bourdonneau, O. Assémat, and M. Piotto. "NMR chemical shift measurements revisited: High precision measurements." Concepts in Magnetic Resonance Part A 30A, no. 4 (2007): 184–93. http://dx.doi.org/10.1002/cmr.a.20089.

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Legchenko, Anatoly V., and Oleg A. Shushakov. "Inversion of surface NMR data." GEOPHYSICS 63, no. 1 (1998): 75–84. http://dx.doi.org/10.1190/1.1444329.

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The main advantage of the surface nuclear magnetic resonance (NMR) method compared to other geophysical methods in the field of groundwater investigation is the ability to measure an NMR signal directly from the water molecules. An NMR signal stimulated by an alternating current pulse through an antenna at the surface, confirms the existence of water in the subsurface with a high degree of reliability. The NMR signal amplitude depends on the pulse parameter (the product of the pulse amplitude and its duration), bulk water volume, and water depth. Measurements are performed while varying the pulse parameter, and subsequent data processing reveals the number of water‐saturated layers, and data concerning their depth, thickness, and water content. One of the major problems in the practical application of the NMR method is the very weak signal (<3000 nV): hence the problem of signal to noise ratio (S/N). S/N can be improved by stacking the signal, but measurement time is increased. We have developed an algorithm that minimizes the number of measurements (number of different values of the pulse parameter) without a loss of inversion accuracy for a given S/N ratio, making it possible to determine a set of optimal pulses for the measurements. NMR measurements are also sensitive to the electrical conductivity of the subsurface; an electrically conductive subsurface causes variations in the depth of investigation and in the vertical resolution of the method. Experience gained from application of the method has proven that both the inversion algorithm and the analysis of the problem are efficient.

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Newling, Benedict. "Gas flow measurements by NMR." Progress in Nuclear Magnetic Resonance Spectroscopy 52, no. 1 (2008): 31–48. http://dx.doi.org/10.1016/j.pnmrs.2007.08.002.

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Deng, Feng, Lizhi Xiao, Mengying Wang, et al. "Online NMR Flowing Fluid Measurements." Applied Magnetic Resonance 47, no. 11 (2016): 1239–53. http://dx.doi.org/10.1007/s00723-016-0832-2.

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Rozprawy doktorskie na temat "NMR Measurements"

Di, Caro Domenico. "NMR measurements for hazelnuts classification." Doctoral thesis, Universita degli studi di Salerno, 2018. http://hdl.handle.net/10556/3113.

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2016 - 2017 In this work, a method for the quality detection of the in-shell hazelnuts, based on the low field NMR, has been proposed. The aim of the work is to develop an in-line classification system able to detect the hidden defects of the hazelnuts. After an analysis of the hazelnut oil, carried out in order to verify the applicability of the NMR techniques and to determine some configuration parameters, the influence factors that affect these measurements in presence of solid sample instead of liquids have been analyzed. Then, the measurement algorithms were defined. The proposed classification procedure is based on the CPMG sequence and the analysis of the transverse relaxation decay. The procedure includes three different steps in which different features are detected: moisture content, kernel development and mold development. These quality parameters have been evaluated .analyzing the maximum amplitude and the second echo peak of the CPMG signal, and the T2 distribution of the relaxation decay. In order to assure high repeatability and low execution time, special attention has been put in the definition of the data processing. Finally, the realized measurement system has been characterized in terms of classification performance. In this phase, because of the reduced size of the test sample (especially for the hazelnuts with defects) a resampling method, the bootstrap, was used. [edited by Author] XVI n.s. (XXX ciclo)

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Stait-Gardner, Tim, Scott A. Willis, Nirbhay N. Yadav, Gang Zheng, and William S. Price. "NMR diffusion measurements of complex systems." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-189360.

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The pulsed gradient spin-echo nuclear magnetic resonance experiment is a powerful tool for studying the constitution and structure of complex systems (e.g., polydisperse systems and porous media). In applications to polydisperse systems, it is important to consider the effects of obstruction, exchange, entanglement, and diffusional averaging processes whereas in applications to porous samples, reliable structural information can only be extracted from the time-dependence of the apparent diffusion coefficient when the deleterious effects of spatially and/or temporally inhomogeneous background (magnetic field) gradients can be suppressed. These issues are considered in this review.

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Stait-Gardner, Tim, Scott A. Willis, Nirbhay N. Yadav, Gang Zheng, and William S. Price. "NMR diffusion measurements of complex systems." Diffusion fundamentals 11 (2009) 15, S. 1-22, 2009. https://ul.qucosa.de/id/qucosa%3A12901.

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Khajeh, Maryam. "Kinetic measurements using time-resolved NMR spectroscopy." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/kinetic-measurements-using-timeresolved-nmr-spectroscopy(aae85bb3-de19-450a-96ab-50e2dfd89da7).html.

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Many thousands of pounds are spent every year by pharmaceutical companies on understanding the mechanisms and kinetics of chemical reactions involved in drug discovery and production. NMR spectroscopy is often at the core of these studies as it is a powerful, non-destructive method for structure elucidation. As such investigations can be time-consuming and cost-inefficient, AstraZeneca, the project sponsor, is interested in more efficient methods for studying the kinetics of pharmaceutical reactions. In this work a number of different techniques have been devised, studied, and implemented to study the kinetics of chemical reactions by time-resolved NMR spectroscopy, in which every species in a reaction can be monitored simultaneously. These novel techniques allow the study of reactions which are difficult or impossible to study by conventional NMR methods (such as heterogeneous reactions), or which are complicated by having overlapping signals. It is possible to monitor the kinetics of a reaction very simply by acquiring a series of 1H spectra, and obtaining the integrals of the signals by least squares fitting. This technique has been used for kinetic studies of static and on-flow reactions. In the static systems the reaction mixture was placed in the normal NMR tube in the magnet, while in the flow system the reaction mixture was placed outside of the magnet, and the solution flowed through an NMR tube placed in the magnet. The novel flow system designed, constructed and tested here has been used for kinetic studies of illustrative homogeneous and heterogeneous reactions, and is suitable for use in a wide range of NMR instrumentation. Kinetic studies have also been carried out by acquiring a series of DOSY datasets, analysing the results using the multi-way method PARAFAC (PARAllel FACtor analysis). A series of DOSY datasets contains multivariate information on spectrum, time evolution and diffusion. Without providing any predetermined model, the data can be decomposed by PARAFAC to yield the spectrum, kinetics, and diffusion profiles for each of the components. It has also been shown that PARAFAC is remarkably robust to low signal-to-noise ratio data, significantly below the level at which conventional methods would fail.

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Ferrari, Maude, J. P. Mérel, Sébastien Leclerc, Christian Moyne, and Didier Stemmelen. "Study of dispersion by NMR: comparison between NMR measurements and stochastic simulation." Diffusion fundamentals 18 (2013) 11, S. 1-4, 2013. https://ul.qucosa.de/id/qucosa%3A13718.

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Dispersion remains, today, a highly topical subject. Our group has been interested in characterizing this phenomenon by pulsed-field-gradient NMR technique. Direct measurement of the dispersion coefficient can be done with a Pulsed Gradient Spin Echo (PGSE) sequence by assuming that the asymptotic regime is reached. In unsteady state, the propagator formalism is used. To better understand these measurements, the NMR experiment is modeled using a stochastic simulation (random walks) and compared with experimental results. The comparison is made for the simple case of Poiseuille flow in a circular tube (Taylor-Aris dispersion).

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Unger, Philip Peter. "NMR-based microprobes for magnetic field measurements." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ62675.pdf.

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Liess, Carsten. "NMR spectroscopic measurements of diffusion in heart." Thesis, University of Oxford, 1999. http://ora.ox.ac.uk/objects/uuid:1ed27b71-578a-4558-950a-10ded28bc2b3.

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A decrease in the apparent diffusion coefficient (ADC) of water is becoming an important tool for the detection of acute and chronic brain disorders, yet it is not known whether changes in myocardial ADCs hold similar potential. Consequently, this work determined whether the ADCs of water or intracellular metabolites could be used to show ischaemia or cell swelling in the isolated rat heart. A modified STEAM pulse sequence was designed to measure the ADCs of the 1H-NMR detectable metabolites, taurine and creatine, with 4 min time resolution in a 3 mm myocardial slice. Experiments included the measurement of: a) metabolite diffusion coefficients and diffusion tensors in solutions, and ADCs and diffusion tensors in the isolated, KCl-arrested rat heart; b) taurine and creatine content during 32 min total, global ischaemia in the isolated rat heart; c) metabolite and water ADCs before, during and after ischaemia; and d) changes in average cardiomyocyte diameter during perfusion and ischaemia using the taurine ADC measurements. At a diffusion time of 50 ms, the myocardial ADCs were 1.06 x 10-3 mm2/s for water, 0.29 x 10-3 mm2/s for taurine and 0.26 x 10"3 mm 2 /s for creatine. Neither taurine nor creatine was lost from the heart during ischaemia, making either suitable for ischaemic diffusion measurements. Contrary to changes in the brain, myocardial water and taurine ADCs remained constant during ischaemia; however, the total creatine ADC increased by 35% which was shown to result from hydrolysis of PCr to creatine. Using the taurine ADC measurements at diffusion times between 50 ms and 1510 ms, the average myocyte diameter was calculated to be 40 μm during perfusion and 27 μm by the end of ischaemia. The decrease in myocyte diameter indicates that the buffer perfused heart is highly oedematous. This is the first time that: 1) metabolite ADCs have been measured in isolated heart, and 2) NMR spectroscopy has been used to determine the myocyte diameter. Thus ADC changes may not have potential for detecting ischaemia in the heart, although the measurement of myocyte diameter using taurine ADCs could indicate myocardial oedema.

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Miah, Habeeba Khatun. "Solid-state NMR measurements of proton chemical shift anistropies." Thesis, University of Nottingham, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.716676.

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A new isotropic-anisotropic correlation experiment has been designed. This combines ultrafast magic angle spinning (MAS) at rates up to 80 kHz for good resolution of isotropic sites with a symmetry-based recoupling sequence to reintroduce the chemical shift anisotropy (CSA) in the indirect dimension. The experiment was implemented for protons at a Larmor frequency of 600 MHz, with some further development at a higher field corresponding to 850 MHz. The experiment was also successfully extended to the case of 19F CSAs. The CSA can be extracted by fitting the resulting lineshapes when the isotropic line is resolved in the direct dimension. The effects of couplings to abundant heteronuclei have also been investigated, since the sequences also recouple the heteronuclear dipolar coupling in certain circumstances. In this case both the dipolar coupling constant and the CSA can be extracted by fitting the resulting lineshapes. Alternatively, the dipolar coupling can be removed, using a dual-channel version of the experiment, to leave only the CSA. CASTEP has been used, in conjunction with experimental results, to refine the X- ray crystal structures of a variety of systems. The success of the refinement process depends on the presence of accurate heavy atom positions since this has a large effect on the calculated *H NMR parameters. A secondary aim was to investigate the correlation between proton CSAs and hydrogen bond lengths. Plotting the optimised hydrogen bond lengths and the corresponding calculated anisotropies revealed linear relationships dependent on the nature of the hydrogen bond acceptors and donors. In contrast, the relationship between the isotropic shifts and hydrogen bond lengths was found to be less linear than previously proposed.

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Law, Susan. "The characterisation of microemulsions using NMR measurements of diffusion." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5983/.

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This thesis investigates how nuclear magnetic resonance (NMR) measurements of diffusion are used to characterise reverse micelles (RMs) in water-in-oil (w/o) microemulsions. The average droplet sizes were determined at varying water to surfactant ratios (ω) and droplet volume fractions (ød), by converting the diffusion coefficients from the surfactant molecules into hydrodynamic radii using the Stokes-Einstein equation. The size distributions of AOT/n-octane/water RMs were obtained by the application of a constrained form of the inverse Laplace transform. The AOT/iso-octane/water/pentanol and CTAB/hexanol/water systems were also studied, where the alcohols act as co-surfactants. Molecular exchange processes were observed between the RMs and the continuous phase, at varying NMR experimental parameters at different ω and ød. There was a decrease in droplet sizes with the addition of pentanol to the AOT/iso-octane/water system, which was observed with consideration to the changes in the viscosity of the continuous phase due to the partitioning and exchange of co-surfactant molecules. Molecular simulations of solvated RMs were set up at the same values of ω as the NMR experiments. The simulations, which were constructed with all-atom forcefields, displayed the interactions between the molecules in the continuous and dispersed phases and showed the RM shape fluctuations and development. The AOT/iso-octane/water/pentanol droplets formed split RMs and were smaller than RMs in the AOT/iso-octane/water system at values of ω < 20. These observations were reflected in the experimental results. The CTAB/hexanol/water droplets formed oblate RMs initially, which continued to fragment into smaller droplets, due to hexanol molecules penetrating the micelle interface.

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Adem, Ziad, Tobias Titze, Cordula B. Krause, et al. "Correlating PFG NMR and IR diffusion measurements in porous glasses." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-189411.

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Książki na temat "NMR Measurements"

Price, William S. NMR studies of translational motion. Cambridge University Press, 2009.

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Price, William S. NMR studies of translational motion. Cambridge University Press, 2008.

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Roberts, John Kenneth. The use of driven equilibrium conditions in the measurement of NMR relaxation times. Aston University. Department of Chemical Engineering and Applied Chemistry, 1989.

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R, French Jeffrey, and Air Resources Laboratory (U.S.), eds. LONGEZ (i.e., LongEZ) (N3R) participation in the 1999 shoaling waves experiment (SHOWEX). U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Air Resources Laboratory, 2000.

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L, Crawford Timothy, Dumas Edward J, and Air Resources Laboratory (U.S.), eds. Data report: LONGEZ (i.e., LongEZ) (N3R) participation in the 1999 shoaling waves experiment (SHOWEX) spring pilot study. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Air Resources Laboratory, 1999.

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D, Sofianos Georgios. NMR imaging: Relaxation time measurements. 1997.

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Części książek na temat "NMR Measurements"

Hägele, G., and U. Holzgrabe. "pH-Dependent NMR Measurements." In NMR Spectroscopy in Drug Development and Analysis. Wiley-VCH Verlag GmbH, 2007. http://dx.doi.org/10.1002/9783527613649.ch04.

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Descallar, Faith Bernadette A., and Shingo Matsukawa. "Chapter 3. NMR Diffusion Measurements." In New Developments in NMR. Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/9781788013178-00089.

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Willis, Scott A., Tim Stait-Gardner, Allan M. Torres, and William S. Price. "Chapter 2. Fundamentals of Diffusion Measurements using NMR." In New Developments in NMR. Royal Society of Chemistry, 2016. http://dx.doi.org/10.1039/9781782623779-00016.

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Code, R. Fraser, and Kenneth G. McNeill. "Local Body Composition Measurements by NMR." In In Vivo Body Composition Studies. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-1473-8_19.

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Cohen, Yoram, Orna Mayzel, Ayelet Gafni, et al. "NMR Diffusion Measurements in Chemical and Biological Supramolecular Systems." In NMR in Supramolecular Chemistry. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4615-9_19.

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Poulis, J. A., J. P. Frančlois, C. H. Massen, and L. C. Van Poucke. "Nuclear Magnetic Resonance (NMR) Measurements on Selenium." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145326.ch26.

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Okuno, Tomonori, Shunsaku Kitagawa, Kenji Ishida, Kohei Kusada, and Hiroshi Kitagawa. "Quantum Size Effect Probed by NMR Measurements." In Creative Complex Systems. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-4457-3_14.

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Boicelli, C. A., and A. M. Baldassarri. "Practical Aspects Of “In Vitro” and “In Vivo” T1 and T2 Measurements." In NMR in Living Systems. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4580-7_14.

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Pearson, Robert M., and John Q. Adams. "Automatic Use of Small Nuclear Magnetic Resonance Spectrometers for Quality Control Measurements." In NMR Applications in Biopolymers. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5868-8_26.

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Mitchell, Jonathan. "Chapter 11. Industrial Applications of Magnetic Resonance Diffusion and Relaxation Time Measurements." In New Developments in NMR. Royal Society of Chemistry, 2016. http://dx.doi.org/10.1039/9781782623779-00353.

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Streszczenia konferencji na temat "NMR Measurements"

Martinez, Gabriela A., and Lorne A. Davis. "Petrophysical Measurements on Shales Using NMR." In SPE/AAPG Western Regional Meeting. Society of Petroleum Engineers, 2000. http://dx.doi.org/10.2118/62851-ms.

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Galante, A., A. Savini, O. Losito, et al. "Mobile NMR for surface analysis." In 2011 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2011. http://dx.doi.org/10.1109/memea.2011.5966754.

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Martin, Ramon Valls, and Diogo Joriro Nazarre. "Improved NMR magnetometer for weak fields." In 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016). IEEE, 2016. http://dx.doi.org/10.1109/cpem.2016.7540526.

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Wang, J., L. Sun, L. Xiao, G. Liao, and Y. Zhang. "Wettability from NMR Measurements and its Mechanism." In 79th EAGE Conference and Exhibition 2017. EAGE Publications BV, 2017. http://dx.doi.org/10.3997/2214-4609.201701396.

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Legchenko, Anatoly, and Jean-Michel Vouillamoz. "Large-Scale NMR Measurements in Porous Media." In MAGNETIC RESONANCE IN POROUS MEDIA: Proceedings of the 10th International Bologna Conference on Magnetic Resonance in Porous Media (MRPM10), including the 10th Colloquium on Mobile Magnetic Resonance (CMMR10). AIP, 2011. http://dx.doi.org/10.1063/1.3562230.

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Veniero, Joseph C., and R. K. Gupta. "NMR measurements of intracellular ions in hypertension." In OE/LASE'93: Optics, Electro-Optics, & Laser Applications in Science& Engineering, edited by Randall L. Barbour and Mark J. Carvlin. SPIE, 1993. http://dx.doi.org/10.1117/12.151171.

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Dick, Michael, Dragan Veselinovic, Derrick Green, et al. "NMR Wettability Index Measurements on Unconventional Samples." In Unconventional Resources Technology Conference. American Association of Petroleum Geologists, 2019. http://dx.doi.org/10.15530/urtec-2019-604.

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Mathur, Ashish, Safdar Ali, Colton Barnes, et al. "Permeability Measurements on Shales using NMR Spectroscopy." In Unconventional Resources Technology Conference. American Association of Petroleum Geologists, 2020. http://dx.doi.org/10.15530/urtec-2020-3203.

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Ohen, Henry A., Austin O. Ajufo, and Paulinus M. Enwere. "Laboratory NMR Relaxation Measurements for the Acquisition of Calibration Data for NMR Logging Tools." In SPE Western Regional Meeting. Society of Petroleum Engineers, 1996. http://dx.doi.org/10.2118/35683-ms.

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Parsekian, Andrew D., Rosemary Knight, Elliot Grunewald, David O. Walsh, and Jim Butler. "Calibrating surface NMR hydraulic conductivity estimates using logging NMR and direct hydraulic conductivity measurements." In SEG Technical Program Expanded Abstracts 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segam2013-1183.1.

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Raporty organizacyjne na temat "NMR Measurements"

Kuchnir, M., E. E. Schmidt, R. W. Hanft, and J. B. Strait. NMR measurements in SSC dipole D00001. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/5027041.

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Kuchnir, M., E. Schmidt, R. Hanft, and J. Strait. NMR Measurements in SSC Dipole D00001. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/1156294.

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Altobelli, Stephen A., and Eiichi Fukushima. Two Phase Flow Measurements by Nuclear Magnetic Resonance (NMR). Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/907985.

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Dai, H., S. Sanderson, J. Davey, F. Uribe, and T. A. Jr Zawodzinski. Electrophoretic NMR measurements of lithium transference numbers in polymer gel electrolytes. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/474865.

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Chinn, S., J. Herberg, A. Sawvel, and R. Maxwell. Solid State NMR Measurements for Preliminary Lifetime Assessments in gamma-Irradiated and Thermally Aged Siloxane Elastomers. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/15014707.

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Fernando, P. U. Ashvin Iresh, Samantha Sullivan, Edith Martinez-Guerra, and Cobb Jared. Internal standard and deuterated solvent selection : a crucial step in PFAS-based fluorine-19 (¹⁹F) NMR research. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47899.

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Streszczenie:

This work is vital because it provides researchers with a framework and rationale for selecting the best internal standard and deuterated solvent for their nuclear magnetic resonance (NMR) analysis of per- and polyfluoroalkyl substances (PFAS)-based compounds. Selecting the best internal standard and deuterated solvent will help to ensure that their results are accurate, precise, and sensitive. The internal standard that is chosen can significantly affect the accuracy, precision, sensitivity, and quantification of NMR measurements. Therefore, it is essential to carefully select an internal standard and a matching deuterated solvent that are well-suited for analyzing PFAS compounds.

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Fukushima, Eiichi. Two-phase flow measurements by nuclear magnetic resonance (NMR). Final technical report, January 1, 1993--September 30, 1997. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/656783.

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Knight, R. The use of dielectric and NMR measurements to determine the pore-scale location of organic. 1998 annual progress report. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/13557.

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Knight, R., T. Bryar, and M. Caputi. The use of dielectric and NMR measurements to determine the pore-scale location of organic contaminants. 1997 annual progress report. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/13556.

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Li, Juan. Studies of vanadium-phosphorus-oxygen selective oxidation catalysts by sup 31 P and sup 51 V NMR spin-echo and volume susceptibility measurements. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5053778.

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