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Academic literature on the topic 'NMR spectra of liquids'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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Journal articles on the topic "NMR spectra of liquids"

1

Ushakov, I. A., V. K. Voronov, D. S. Grishmanovskii, S. N. Adamovich, R. G. Mirskov, and A. N. Mirskova. "NMR spectra of metallated alkanolammonium ionic liquids." Russian Chemical Bulletin 64, no. 1 (January 2015): 58–61. http://dx.doi.org/10.1007/s11172-015-0821-x.

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Khudozhitkov, Alexander E., Peter Stange, Anne-Marie Bonsa, Viviane Overbeck, Andreas Appelhagen, Alexander G. Stepanov, Daniil I. Kolokolov, Dietmar Paschek, and Ralf Ludwig. "Dynamical heterogeneities in ionic liquids as revealed from deuteron NMR." Chemical Communications 54, no. 25 (2018): 3098–101. http://dx.doi.org/10.1039/c7cc09440j.

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Deuteron NMR spectroscopy is a suitable method to study dynamical heterogeneities in protic ionic liquids. In the ²H spectra of the protic ionic liquid [TEA][OTf] we observe anisotropic and isotropic signals at the same time.

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Messali, Mouslim. "Conventional versus ultrasound and microwave assisted synthesis: Some new environmentally friendly functionalized picolinium-based ionic liquids with potential antibacterial activity." Acta Pharmaceutica 65, no. 3 (September 1, 2015): 253–70. http://dx.doi.org/10.1515/acph-2015-0028.

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Abstract A green chemistry approach has been adopted for the synthesis of thirty-four new picolinium-based ionic liquids using microwave (MW) and ultrasound (US) irradiation as well as conventional thermal heating. Their structures were confirmed by FT-IR, 1H NMR, 13C NMR, 11B NMR, 19F NMR, 31P NMR, mass spectra and elemental analyses. The antimicrobial profile of the novel ionic liquids was evaluated and the minimum inhibitory concentration (MIC) showed their moderate to low antimicrobial activity against eight types of human pathogens.

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Wei, Chenyang, Zhengping Liu, Hongwei Tan, Liyan Huang, and Jun Li. "A non-metal route to realize the bio-based polyester of poly(hexylene succinate): preparation conditions, side-reactions and mechanism in sulfonic acid-functionalized Brønsted acidic ionic liquids." RSC Advances 10, no. 58 (2020): 35381–88. http://dx.doi.org/10.1039/d0ra07157a.

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Şaka, İrfan, Sedat Gümüş, and Azmi Gençten. "A Complete Product Operator Theory for IS (I=1, S = 1) Spin System and Application to 3D HMQC-COSY NMR Experiment." Zeitschrift für Naturforschung A 64, no. 5-6 (June 1, 2009): 377–86. http://dx.doi.org/10.1515/zna-2009-5-612.

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There exist a variety of multi-pulse NMR experiments for spectral assignment of complex molecules in solution. The conventional heteronuclear multiple-quantum coherence (HMQC) NMR experiment provides correlation between weakly coupled hetero-nuclei. The COSY is one of the most popular two-dimensional NMR experiment which is used to correlate J-coupled homo-nuclei of spectral assignment. The combination of the conventional HMQC and COSY NMR experiments yields a new experiment called 3D HMQC-COSY NMR experiment. The product operator theory is widely used for the analytical descriptions of multi-pulse NMR experiments for weakly coupled spin systems in liquids. In this study, complete product operator theory for weakly coupled IS (I = 1, S = 1) spin system is presented by obtaining the evolutions of the product operators under the spin-spin coupling Hamiltonian. As an application and a verification, analytical descriptions of 3D HMQC-COSY NMR experiment are obtained for weakly coupled ISnI’_S’m (I = I’ = 1/2; S = S’ = 1; n = 1,2, 3; m = 1, 2) multi-spin systems. Then the estimated spectra of this experiment for various multi-spin systems are explained in detail.

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Strate, Anne, Jan Neumann, Thomas Niemann, Peter Stange, Alexander E. Khudozhitkov, Alexander G. Stepanov, Dietmar Paschek, Daniil I. Kolokolov, and Ralf Ludwig. "Counting cations involved in cationic clusters of hydroxy-functionalized ionic liquids by means of infrared and solid-state NMR spectroscopy." Physical Chemistry Chemical Physics 22, no. 13 (2020): 6861–67. http://dx.doi.org/10.1039/d0cp00303d.

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Sensitive probe of like-charge attraction: analyzing infrared spectra allows counting the number of cations involved in clusters of opposite (c–a) and like-charged (c–c) ions in ionic liquids. This approach is also applicable to molecular liquids.

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Ylihautala, Mika, Petri Ingman, Jukka Jokisaari, and Peter Diehl. "129Xe and 131Xe NMR of Xenon in Mesophases of Cetyltrimethylammonium Bromide in Formamide." Applied Spectroscopy 50, no. 11 (November 1996): 1435–38. http://dx.doi.org/10.1366/0003702963904791.

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For the first time, noble gas NMR has been applied to a study of a lyotropic liquid crystal. 129Xe and 131Xe NMR spectra of natural xenon gas dissolved in pure formamide and three cetyltrimethylammonium bromide (CTAB)/formamide (FA) mixtures were recorded over wide temperature ranges. The CTAB/FA system forms micelles at low concentrations of CTAB and mesophases at higher concentrations and elevated temperatures. The phase transitions are observed in the series of xenon spectra. In addition, the free xenon gas signal is seen in the spectra at low temperature, when the CTAB/FA system has a coexisting solid/liquid phase. The gas signal indicates that Xe is not soluble in the solid but accumulates in macroscopic bubbles. The intensity variation of the central peak of the 131Xe NMR spectra shows the presence of a static external electric field gradient (EFG). However, the spectral satellites are not observed and, therefore, the magnitude of the EFG cannot be determined. The obvious reason for the missing 131Xe satellites is the orientation distribution of the EFG tensor leading to broadening of the satellites.

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Augustijn, Dieuwertje, Huub J. M. de Groot, and A. Alia. "HR-MAS NMR Applications in Plant Metabolomics." Molecules 26, no. 4 (February 10, 2021): 931. http://dx.doi.org/10.3390/molecules26040931.

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Metabolomics is used to reduce the complexity of plants and to understand the underlying pathways of the plant phenotype. The metabolic profile of plants can be obtained by mass spectrometry or liquid-state NMR. The extraction of metabolites from the sample is necessary for both techniques to obtain the metabolic profile. This extraction step can be eliminated by making use of high-resolution magic angle spinning (HR-MAS) NMR. In this review, an HR-MAS NMR-based workflow is described in more detail, including used pulse sequences in metabolomics. The pre-processing steps of one-dimensional HR-MAS NMR spectra are presented, including spectral alignment, baseline correction, bucketing, normalisation and scaling procedures. We also highlight some of the models which can be used to perform multivariate analysis on the HR-MAS NMR spectra. Finally, applications of HR-MAS NMR in plant metabolomics are described and show that HR-MAS NMR is a powerful tool for plant metabolomics studies.

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Lyčka, Antonín, Roman Doleček, Petr Šimûnek, and Vladimír Macháček. "15N NMR spectra of some ionic liquids based on 1,3-disubstituted imidazolium cations." Magnetic Resonance in Chemistry 44, no. 5 (2006): 521–23. http://dx.doi.org/10.1002/mrc.1785.

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Aoki, Dan, Kenta Nomura, Masashi Hashiura, Yoshinori Imamura, Sonoka Miyata, Noritsugu Terashima, Yasuyuki Matsushita, et al. "Evaluation of ring-5 structures of guaiacyl lignin in Ginkgo biloba L. using solid- and liquid-state 13C NMR difference spectroscopy." Holzforschung 73, no. 12 (November 26, 2019): 1083–92. http://dx.doi.org/10.1515/hf-2019-0011.

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Abstract To discuss the macromolecular structure and properties of lignin, the complementary use of solid- and liquid-state nuclear magnetic resonance (NMR) combined with a specific 13C-enrichment technique may provide useful information. The 13C-enriched lignin was prepared by administering [guaiacyl ring-5(G5)-13C]-coniferin to a growing Ginkgo biloba L. shoot. The 13C-enriched cellulolytic enzyme lignin (EL) and its acetate prepared from the ginkgo shoot were examined by solid- and liquid-state 13C NMR spectroscopy. The 13C NMR spectrum derived only from the G5 carbon was obtained as a difference spectrum based on the spectra of the G5-13C enriched and un-enriched (UE) samples. The condensed structures, including the enriched G5-carbon, were evaluated using difference spectra. The chemical shifts of the enriched G5 carbon in both the solid- and liquid-state 13C NMR spectra agreed with each other in principle. The quantitative ratio of the condensed and uncondensed structures at G5 was found to be larger by solid-state cross polarization/magic angle spinning (CP/MAS) NMR than by liquid-state NMR.

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Dissertations / Theses on the topic "NMR spectra of liquids"

1

Friedrich, J. O. "Frequency and spatial selectivity in nuclear magnetic resonance spectroscopy." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234964.

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Omnes, Laurent. "Towards the biaxial nematic phase via specific intermolecular interactions." Thesis, University of Exeter, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368368.

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Schmid, Jean-Claude. "Marqueurs biologiques soufres dans les petroles." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13146.

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Identification et geochimie des marqueurs biologiques soufres dans deux petroles particulierement riches en soufre: petroles de marvejols, bassin d'alis france et de rozel point, utch, etats-unis. La diversite des composes organo-soufres et leur teneur dans les petroles indiquent que la formation de ces molecules se fait tres probablement par un processus non-biologique. L'incorporation de soufre dans la matiere organique sedimentaire se ferait principalement a un stade precoce de la maturation sur des molecules fonctionnalisees, notamment des alcenes

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Peiponen, K. E. (Kai-Erik). "Optical spectra analysis of turbid liquids." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514291685.

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Abstract This thesis is devoted to methods of analyzing optical spectra obtained from turbid liquids, i.e., liquids that are optically very thick and/or scatter light. Data for spectral analysis were obtained with a new, multifunction spectrophotometer developed for industrial liquid samples. One characteristic of the spectrophotometer is that spectral analysis methods can be implemented into the software. Here, the emphasis was on data inversion methods, particularly the Kramers-Kronig analysis and the maximum entropy method, which can be used to gain information on the wavelength-dependent complex refractive index of liquid samples. Relating to such characteristics as density and colour, the complex refractive index also helps to identify the species that form a liquid. The methods were applied to study the internal reflection of light from the prism-liquid interface of the probe and to analyze surface plasmon resonance spectra. This study provided new methods of investigating the optical properties of relatively difficult objects, like offset inks, and of assessing adhesion forces between ink and the substrate system. Another important part of the thesis was the exploration of spectral analysis methods to obtain optical properties of nanoparticles in a liquid matrix. Bounds for the optical properties of multi-component structures in a liquid were considered with the aid of Wiener bounds.

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Bernhem, Kristoffer. "How ionic are ionic liquids?" Thesis, KTH, Skolan för kemivetenskap (CHE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-41033.

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Ionic liquids are continuously finding more and more applications, both in research and in the industry. Many attempts have been made to find parameters that could be used to describe all ionic liquid systems. Five years ago a Japanese group applied the work of Gutmann on ionic liquids to use ionic association to describe solvation effects. The group calculated ionic association from conductivity and diffusion measurements. This report presents a direct approach through electrophoretic NMR to measure ionic association in ionic liquids. The report contains a brief introduction to ionic liquids and their properties as well as a short explanation of Nuclear Magnetic Resonance (NMR) spectroscopy, diffusion NMR and a more detailed explanation of electrophoretic NMR (eNMR). Experimental setups, taken from previous work by the NMR group at Physical Chemistry KTH, have been modified to allow for measurements in ionic liquid systems. The report discusses the issues that can arise when measuring eNMR in ionic liquids and suggests solutions. The method developed is principally built upon experiments on 1-butyl-3-methyl-imidazolium trifluoroacetate and is directly applicable to other ionic liquid systems. For more viscous systems than the one investigated here, slight changes will need to be made, as explained in the report. In order to evaluate the method developed during the project the degree of association for 1-butyl-3-methyl-imidazolium trifluoroacetate has been calculated from experimental results and results in similar values as reported by Tokuda et al.. Furthermore, the temperature variation due to Joule heating during a complete eNMR experiment was also investigated by observing change in chemical shift.

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Giraud, Gerard. "Ultrafast vibrational dynamics in liquids and proteins." Thesis, University of Strathclyde, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275153.

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Radhi, Asanah. "NMR studies of cellulose dissolution in ionic liquids." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/7844/.

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This study examines the properties of ionic liquid and co-solvent mixtures, investigating fundamental aspect of cellulose dissolution in ionic liquids and developes a new technique to study the kinetics of cellulose coagulation. The first system that we studied is the mixture of 1-Ethyl-3-Methylimidazolium Acetate (EMIMAc) and Dimethyl Sulfoxide (DMSO). The motivation behind this study is that the use of DMSO as a co-solvent for cellulose dissolution in ionic liquid makes the cellulose processing more efficient and cost effective. Detailed studies of solutions are carried out to probe the macro- and micro-scopic changes of the ionic liquid properties as well as DMSO in the mixtures. The results suggest that ionic liquid and DMSO mixtures behave almost like an ideal solution. Solutions of 1-Butyl-3-Methylimidazolium Chloride (BMIMCl)-cellulose are investigated across a range of cellulose concentrations and temperatures using NMR- spectroscopy and relaxometry, diffusion and viscosity measurements. Using Bloemberg-Purcell-Pound (BPP) theory, NMR relaxation times T1 and T2 have been expressed in terms of an isotropic correlation time, τc for molecular motion. The derivation of the relation between correlation time and translational diffusion shows that the rotational motion can be best correlated to translational motion in term of hydrodynamic radius and activation energy. Mixtures of ionic liquids and carbohydrates (glucose, cellobiose and cellobiose) are investigated using viscosity and NMR spectroscopy, relaxometry and diffusion measurements. The results give the interaction stoichiometry of ionic liquid:hydroxyl group, 1:1. Analysis of the dynamic properties of the mixtures suggests that in solutions the bulk viscosity, η is best replaced by a microviscosity, ηµ = fµη, where fµ is the microviscosity correction factor. A new method to study the kinetics of cellulose coagulation in water from cellulose/IL/co-solvent using NMR has been successfully developed. Diffusion coefficients of EMIMAc and DMSO are found not to be significantly affected by cellulose and DMSO concentrations within the range studied, which suggests that if we want to change the coagulation rate and therefore the morphology, we would need to change the anti-solvent.

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Medford, Hannah T. Macdonald Jeffrey. "Colon cancer diagnosis using NMR spectra of urine." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,284.

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Thesis (M.S.)--University of North Carolina at Chapel Hill, 2006.
Title from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Biomedical Engineering." Discipline: Biomedical Engineering; Department/School: Medicine.

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Palfreyman, Stuart A. "Sonically induced narrowing of the NMR spectra of solids and other novel NMR techniques." Thesis, Aston University, 1996. http://publications.aston.ac.uk/9610/.

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A typical liquid state NMR spectrum is composed of a number of discrete absorptions which can be readily interpreted to yield detailed information about the chemical environment of the nuclei found within the sample. The same cannot be said about the spectra of solid samples. For these the absorptions are typically broad, featureless and yield little information directly. This situation may be further exacerbated by the characteristically long T1 values of nuclei bound within a solid lattice which, consequently, require long inter-sequence delays that necessitate lengthy experiments. This work attempts to address both of these inherent problems. Classically, the resolution of the broad-line spectra of solids into discrete resonances has been achieved by imparting to the sample coherent rotation about specific axes in relation to the polarising magnetic field, as implemented in the magic-angle spinning (MAS) [1], dynamic angle spinning (DAS) [2] and double rotation (DOR) [3] NMR experiments. Recently, an alternative method, sonically induced narrowing of the NMR spectra of solids (SINNMR) [4], has been reported which yields the same well resolved solid-state spectra as the classic solid-state NMR experiments, but which achieves the resolution of the broad-line spectra through the promotion of incoherent motion in a suspension of solid particles. The first part of this work examines SINNMR and, in particular, concentrates on ultrasonically induced evaluation, a phenomenon which is thought to be essential to the incoherent averaging mechanism. The second part of this work extends the principle of incoherent motion, implicit in SINNMR, to a new genre of particulate systems, air fluidized beds, and examines the feasibility of such systems to provide well resolved solid state NMR spectra. Samples of trisodium phosphate dodecahydrate and of aluminium granules are examined using the new method with partially resolved spectra being reported in the case of the latter.

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Aujla, R. S. "Carbon-13 NMR spectra of solid dyestuffs and polymers." Thesis, University of East Anglia, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304771.

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Books on the topic "NMR spectra of liquids"

1

Morris, Gareth A. Multidimensional NMR methods for the solution state. Chichester, U.K: Wiley, 2010.

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Chandrakumar, Narayanan. Modern techniques in high-resolution FT-NMR. New York: Springer-Verlag, 1987.

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Chandrakumar, Narayanan. Modern techniques in high-resolution FT-NMR. New York: Springer-Verlag, 1987.

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Burnell, E. Elliott, and Cornelis A. de Lange, eds. NMR of Ordered Liquids. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-0221-8.

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Burnell, E. Elliott. NMR of Ordered Liquids. Dordrecht: Springer Netherlands, 2003.

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Mitchell, Terence N., and Burkhard Costisella. NMR — From Spectra to Structures. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-05434-5.

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7

Wehrli, F. W. Interpretation of carbon-13 NMR spectra. 2nd ed. Chichester: Wiley, 1988.

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8

Brandolini, Anita J. NMR spectra of polymers and polymer additives. New York: Marcel Dekker, 2000.

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9

Quantum description of high-resolution NMR in liquids. Oxford: Clarendon, 1988.

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Quantum description of high resolution NMR in liquids. Oxford: Clarendon Press, 1988.

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Book chapters on the topic "NMR spectra of liquids"

1

Syvitski, Raymond T. "Spectral Analysis of Orientationally Ordered Molecules." In NMR of Ordered Liquids, 89–104. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-0221-8_5.

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Allen, David T., and Leonidas Petrakis. "Estimating Thermophysical Properties of Coal Liquids Using NMR Spectra." In New Trends in Coal Science, 187–96. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3045-2_8.

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Szymański, Sławomir, and Piotr Bernatowicz. "Quantum Molecular Dynamics in Liquid-Phase Stick NMR Spectra." In Classical and Quantum Molecular Dynamics in NMR Spectra, 333–48. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-90781-9_8.

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Veracini, C. A. "NMR Spectra in Liquid Crystals the Partially Averaged Spin Hamiltonian." In Nuclear Magnetic Resonance of Liquid Crystals, 99–121. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-6517-1_5.

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Kralj, S., M. Vilfan, and S. Žumer. "Effect of Translational Diffusion on NMR Spectra of Confined Liquid Crystals." In 25th Congress Ampere on Magnetic Resonance and Related Phenomena, 335–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-76072-3_173.

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Kimmich, Rainer. "Derivation of Basic NMR Spectra." In NMR, 467–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60582-6_50.

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Kemp, William. "Proton NMR Spectra." In NMR in Chemistry, 45–83. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-18348-7_4.

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Kemp, William. "Phosphorus-31 NMR Spectra." In NMR in Chemistry, 176–81. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-18348-7_10.

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Kemp, William. "Oxygen-17 NMR Spectra." In NMR in Chemistry, 189–92. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-18348-7_12.

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Kemp, William. "Carbon-13 NMR Spectra." In NMR in Chemistry, 84–107. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-18348-7_5.

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Conference papers on the topic "NMR spectra of liquids"

1

Gnatyuk, I. I., Galyna O. Puchkovska, I. Chashechnikova, F. Nozirov, S. Jurga, and B. Peplinska. "¹H NMR spectra of 5CB liquid crystal and 5CB-MCM heterogeneous system." In SPIE Proceedings, edited by Galyna O. Puchkovska, Tatiana A. Gavrilko, and Olexandr I. Lizengevich. SPIE, 2004. http://dx.doi.org/10.1117/12.569807.

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Ni, Qingwen, and Shuo Chen. "Assessing the Effect of Matrix Metalloproteinase-9 on the Growth of Mice Teeth." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53708.

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Dentin and bone are formed when odontoblasts and osteoblasts synthesize and secrete collagen type I-rich extracellular matrix that mineralizes in a highly controlled manner. A wide spectrum of mouse and human disorders affecting tooth and bone biomineralization shows that dentin and bone formation are under strict genetic control. Although the controlling mechanisms of dentinogenesis and osteogenesis require further study, a large body of evidence points to the importance of the matrix metalloproteinases (MMPs) participate in a wide variety of extracellular matrix degradation. Detailed knowledge of MMPs may be important for understanding the pathogenesis of tooth development. Some researchers have pointed MMP-9 is an extracelluar proteinase that is highly expressed in osteoclasts and has been postulated to play an important role in their resorptive activity. Although MMP-9 has been reported to play a role in bone resorption, the association of this enzyme during deciduous tooth resorption has not yet been clarified. Based on accumulating evidence, we hypothesized that MMP-9 should play a role in teeth attrition. In this study, we have applied NMR relaxation technique to assess age-related MMP-9 KO tooth quality in vitro by quantifying changes in dentin and pulp simultaneously. The major hypothesis in this paper was that whether noninvasive NMR relaxation time measurements could be used to characterize MMP-9 KO changes in dentin and pulp, and to predict tooth quality. Specifically, we tested that age-related MMP-9 KO tooth changes result in an alteration of the NMR spin-spin (T2) relaxation time signal due to the structural changes in the tooth matrix. This signal can be further processed to produce a T2 relaxation distribution spectrum related to dentin and pulp, and their derived parameters can be used as descriptors of age-related MMP-9 KO tooth changes. In this study, the proton liquid-like NMR spin-spin (T2) relaxation decay signal was obtained from the Carr-Purcell-Meiboom-Gill (CPMG) NMR spin echo train method [1,2], then the relaxation decay signal was converted to T2 relaxation distribution spectra describing the size domain of dentin and pulp. Therefore, we can calibrate the intensities in NMR inversion T2 relaxation distribution spectra corresponding to the amount of dentin and pulp related to the structural changes. Here, we propose an NMR calibration method “NMR standard estimation” — the ratio of the amount of pulp to the amount of dentin obtained from NMR T2 distribution spectra that can be used to measure the age-related MMP-9 KO structural changes in teeth [3]. We are cognizant of the biological and physiological variability manifest in teeth size variations, but feel that this kind of NMR standard estimation — the ratio of amount of dentin to amount of pulp from the NMR T2 inversion spectrum can be used to determine age-related MMP-9 KO structural changes in teeth and eliminate any variations in size of teeth.

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Romano, R., R. Canonico, F. Acernese, G. Giordano, and F. Barone. "Biological NMR FIDs and spectra normalization." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Tribikram Kundu. SPIE, 2014. http://dx.doi.org/10.1117/12.2044069.

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Nedbaeva, Lyudmyla. "Investigation of the molecular ordering of the cholesteric liquid crystals by NMR line moment method." In The 15th international conference on spectral line shapes. AIP, 2001. http://dx.doi.org/10.1063/1.1370697.

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Romero, Pedro. "Fitting Nmr Spectra For Retrieving Fluid Distributions." In 11th International Congress of the Brazilian Geophysical Society. European Association of Geoscientists & Engineers, 2009. http://dx.doi.org/10.3997/2214-4609-pdb.195.1514_evt_6year_2009.

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Jackowski, Karol. "Multinuclear NMR spectra of microscopic gaseous samples." In SPIE Proceedings, edited by Leonid N. Sinitsa and Semen N. Mikhailenko. SPIE, 2004. http://dx.doi.org/10.1117/12.545659.

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Romero, Pedro. "Fitting NMR spectra for retrieving fluid distributions." In 11th International Congress of the Brazilian Geophysical Society & EXPOGEF 2009, Salvador, Bahia, Brazil, 24-28 August 2009. Society of Exploration Geophysicists and Brazilian Geophysical Society, 2009. http://dx.doi.org/10.1190/sbgf2009-263.

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Roth, Timothy B., and Ann M. Anderson. "Light Transmission Characteristics of Thermochromic Liquid Crystals." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81812.

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This paper presents the results of a study to develop a novel thermochromic liquid crystal (TLC) temperature measurement system that uses light transmission instead of light reflection. We used Imagetherm 25C10W sprayable TLCs. The TLCs were painted on a clear surface and placed in a spectrometer. The amount of light transmitted at monochromatic wavelengths from 400 to 700 nm was measured for temperatures from 25–55 C under conditions of non-polarized, linearly polarized and cross polarized light. The transmission spectra exhibit a distinct “s-like” shape when the TLCs are in their active range. We detect significant changes in the transmission spectra for temperatures from 27 to 48 C (whereas in reflection the TLCs are useful over a significantly smaller range). We have analyzed the spectrometer data in a number of ways including (a) total amount of light transmitted (b) amount of red, green and blue light transmitted, and (c) spectral curve characteristics (peak transmission, inflection wavelength and wavelength for peak transmission) all as a function of temperature. There is a linear relationship between temperature and all of these variables which we believe can be exploited in the development of a CCD camera based light transmission system. We also investigated the effects of temperature overheat on the transmission spectra. Overheating the TLCs increases the amount of light transmission.

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Fukushima, Eiichi, Stephen Altobelli, Andrew McDowell, and Tongsheng Zhang. "EARTH'S FIELD NMR FOR DETECTION OF LIQUIDS NEAR THE SURFACE." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2013. Environment and Engineering Geophysical Society, 2013. http://dx.doi.org/10.4133/sageep2013-231.1.

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Kohlbacher, O., A. Burchardt, A. Moll, A. Hildebrandt, P. Bayer, and H. P. Lenhof. "A NMR-spectra-based scoring function for protein docking." In the fifth annual international conference. New York, New York, USA: ACM Press, 2001. http://dx.doi.org/10.1145/369133.369194.

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Reports on the topic "NMR spectra of liquids"

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Marzke, R. F., and G. H. Wolf. Laser Heated Gradient NMR Studies of Ceramic Liquids. Fort Belvoir, VA: Defense Technical Information Center, May 2004. http://dx.doi.org/10.21236/ada426595.

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2

Gochin, M. Two dimensional NMR of liquids and oriented molecules. Office of Scientific and Technical Information (OSTI), February 1987. http://dx.doi.org/10.2172/6478281.

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3

Chapman, Stephen. Novel Psychoactive Spectra: NMR of (mostly) Novel Psychoactive Substances. Isomer Design, June 2017. http://dx.doi.org/10.16889/isomerdesign-6.

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Ostrowski, Stanislaw, Thomas G. Burke, and Waldemar Priebe. 13 C NMR Spectra of Allosteric Effectors of Hemoglobin. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada262979.

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Chapman, Stephen, Darcy Burns, and Timothy Burrow. 1H and 13C NMR spectra of N6-allyl-6-norlysergic acid diethylamide (AL-LAD). Isomer Design, July 2016. http://dx.doi.org/10.16889/isomerdesign-3.

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Chapman, Stephen, Darcy Bruns, and Timothy Burrow. 1H and 13C NMR spectra of (2′S,4′S)-lysergic acid 2,4-dimethylazetidide (LSZ). Isomer Design, July 2016. http://dx.doi.org/10.16889/isomerdesign-4.

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Duell, Anna. Analysis of E-cigarette Liquids and Aerosols by NMR Spectroscopy: Compositions, Boiling Points, and Degradation Profiles. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.7224.

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Paytan, Adina. Organic Matter Composition, Recycling Susceptibility, and the Effectiveness of the Biological Pump – An Evaluation Using NMR Spectra of Marine Plankton. Office of Scientific and Technical Information (OSTI), February 2014. http://dx.doi.org/10.2172/1120791.

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