Relevant bibliographies by topics / ³¹P nuclear magnetic resonance (NMR) spectroscopy

Academic literature on the topic '³¹P nuclear magnetic resonance (NMR) spectroscopy'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "³¹P nuclear magnetic resonance (NMR) spectroscopy"

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Parlak, Yeliz, and Nuray Güzeler. "Nuclear Magnetic Resonance Spectroscopy Applications In Foods." Current Research in Nutrition and Food Science Journal 4, Special-Issue-October (October 8, 2016): 161–68. http://dx.doi.org/10.12944/crnfsj.4.special-issue-october.22.

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Nuclear magnetic resonance spectroscopy (NMR) is the most powerful technique for determining the structure of organic compounds. NMR techniques are used successfully in various food systems for quality control and research. NMR spectroscopy is used to determine structure of proteins, aminoacid profile, carotenoids, organic acids, lipid fractions, the mobility of the water in foods. NMR spectroscopy is also used to identify and quantify the metabolites in foods. Also vegetable oils, fish oils, fish and meat, milk, cheese, wheat, fruit juices, coffee, green tea, foods such as wine and beer are among the last NMR applications. In addition, NMR spectroscopy is utilized for foodomics which is a new discipline that brings food science and nutritional research together. NMR techniques used for the food authentication are one- and two-dimensional NMR techniques, high resolution liquid state 1H and 13C NMR techniques, N15 and P-31 NMR techniques, 1H HR/MAS (high resolution magic angle spinning) NMR techniques. At this study, usage purposes of nuclear magnetic resonance spectroscopy for foods were collected.
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KARABACAK ATAY, Çiğdem, and Mehmet ULUTÜRK. "Synthesis and Theoretical Calculations of Benzoic Acid-Based New Mono Azo Dye." Süleyman Demirel Üniversitesi Fen Edebiyat Fakültesi Fen Dergisi 17, no. 2 (November 25, 2022): 559–67. http://dx.doi.org/10.29233/sdufeffd.1181119.

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This study describes the synthesis, characterization and theoretical calculation of 3,5-dihydroxy-2-(naphthalen-2-yldiazenyl) benzoic acid. The synthesized compound was obtained through efficient synthetic route using 2-Naphthylamine and 3,5-dihydroxybenzoic acid as starting materials and characterized by various spectroscopic techniques such as Fouirer Transform Infrared Spectroscopy (FTIR), Proton Nuclear Magnetic Resonance Spectroscopy (1H-NMR), Carbon Nuclear Magnetic Resonance Spectroscopy (13C-NMR), Ultraviolet–visible spectroscopy (UV-Vis). All theoretical calculation was performed with Density Functional Theory (DFT). Optimized molecular structure, vibrational spectra, NMR chemical shift values, frontier molecular orbitals, bond lengths (Å), bond angles (°) and Molecular Electrostatic Potential (MEP) diagram of molecule were calculated using the 6-311G(d,p) basis set. It has been observed that the results obtained from the experimental and theoretical calculations support each other and were in harmony.
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Attaelmannan, M. A., A. A. Dahl, and R. S. Reid. "Analysis of volatile fatty acids in rumen fluid by proton NMR spectroscopy." Canadian Journal of Animal Science 79, no. 3 (September 1, 1999): 401–4. http://dx.doi.org/10.4141/a99-013.

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A study was conducted to quantify the volatile fatty acid (VFA) concentrations in aqueous and rumen fluid samples using a standard additions based quantitative proton nuclear magnetic resonance (NMR) spectroscopic method. Standard plots for acetic, propionic and butyric acids were all found to be linear (R2 > 0.99). Results obtained by NMR were compared with those obtained using the conventional gas chromatographic method. No significant differences were found between the means and precisions of the two techniques (P < 0.05). The method is well-suited for the routine quantification of these acids, requires no sample pretreatment and is more rapid than gas chromatography. Key words: Volatile fatty acid determination, rumen fluid, gas chromatography, nuclear magnetic resonance spectroscopy
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Liu, Z., B. W. McBride, A. Lirette, R. W. Fairfull, and M. Brauer. "Phosphorus-31 nuclear magnetic resonance spectroscopy of liver from two broiler chicken lines." Canadian Journal of Animal Science 74, no. 4 (December 1, 1994): 687–94. http://dx.doi.org/10.4141/cjas94-099.

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Hepatic levels of phosphorus-containing compounds that are related to fat metabolism in the liver of two broiler lines with different body-fat content were assessed using high-resolution 31P NMR spectroscopy. PCA extracts of livers from 16-d-old chicks were analyzed with an NMR spectrometer. The results demonstrated that the concentrations of G3P, AMP and phosphocholine were significantly higher in the livers of LL birds than in those of the FL birds (P < 0.05). Differences in hepatic concentration of GPE and GPC were not detected between the two lines. It was also found that the liver weight per unit body weight of the FL chickens was less than that of the LL birds (P < 0.01). Average body weight of FL birds at 16 d of age was lighter than that of LL birds (P = 0.01). The FL birds deposited more (P < 0.05) fat per unit body weight than the LL birds. However, no statistical difference (P > 0.05) was found in protein deposition per unit body weight between the two lines. These results indicate that liver size and the concentration of hepatic phosphorus containing compounds are related to the partition of energy in broiler chickens. Key words: NMR spectroscopy, phosphorus-containing compounds, fat deposition, liver, broiler chicken
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Vardhan, Nafady, Al-Enizi, Khandker, El-Sagher, Verma, Acevedo-Duncan, Alotaibi, and Ma. "Investigation of the Anticancer Activity of Coordination-Driven Self-AssembledTwo-Dimensional Ruthenium Metalla-Rectangle." Molecules 24, no. 12 (June 19, 2019): 2284. http://dx.doi.org/10.3390/molecules24122284.

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Coordination-driven self-assembly is an effective synthetic tool for the construction of spatially and electronically tunable supramolecular coordination complexes (SCCs), which are useful in various applications. Herein, we report the synthesis of a two-dimensional discrete metalla-rectangle [(η6-p-cymene)4Ru4(C6H2O4)2(2)2](CF3SO3)4 (3) by the reaction of a dinuclear half-sandwich ruthenium (II) complex [Ru2(η6-p-cymene)2(C6H2O4)Cl2] (1) and bis-pyridyl amide linker (2) in the presence of AgO3SCF3. This cationic ruthenium metalla-rectangle (3) has been isolated as its triflate salt and characterized by analytical techniques including elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance spectroscopy (1H-NMR), carbon nuclear magnetic resonance spectroscopy (13C-NMR), 1H-1H correlation spectroscopy (COSY), 1H-1H nuclear Overhauser effect spectroscopy (NOESY), diffusion ordered spectroscopy (DOSY), and high-resolution electrospray ionization mass spectrometry (HR-ESI-MS). Significantly, the 2D cationic ruthenium metalla-rectangle showed better anticancer activity towards three different cell lines (A549, Caki-1 and Lovo) as compared with the parent ruthenium complex (1) and the commercially used drug, cisplatin.
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Zhang, Shan-Shan, Niu-Niu Zhang, Sen Guo, Shao-Jing Liu, Yu-Fei Hou, Shiming Li, Chi-Tang Ho, and Nai-Sheng Bai. "Glycosides and flavonoids from the extract of Pueraria thomsonii Benth leaf alleviate type 2 diabetes in high-fat diet plus streptozotocin-induced mice by modulating the gut microbiota." Food & Function 13, no. 7 (2022): 3931–45. http://dx.doi.org/10.1039/d1fo04170c.

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Twenty glycoside derivatives and nine flavonoids from the leaves of Pueraria (P. thomsonii) were isolated by column chromatography and characterized by nuclear magnetic resonance spectroscopy (NMR) and high performance liquid chromatography (HPLC).
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Okunieff, P., M. D. Greenberg, A. Zietman, J. Kahn, S. Westgate, and L. J. Neuringer. "Failure of 1H nuclear magnetic resonance spectroscopy of blood plasma to detect malignancy." Journal of Clinical Oncology 8, no. 5 (May 1990): 906–10. http://dx.doi.org/10.1200/jco.1990.8.5.906.

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Water-suppressed proton nuclear magnetic resonance (NMR) of plasma was proposed as a technique for detecting malignant tumors. In that analysis, bloods drawn from cancer patients at the Beth Israel Hospital (BIH; Boston, MA), were easily distinguished from normal subjects by measuring and averaging the proton NMR methyl and methylene line widths of plasma lipoproteins. We collected blood at the Massachusetts General Hospital (MGH), including from normal controls, patients with untreated and treated malignant tumors, and patients with nontumor diseases. The plasma NMR analyses were carried out blind. The code was not broken until all patient charts and pathology records were reviewed, plasma analyses were completed, and patients had been divided into appropriate clinical groups. Analysis of these data showed no differences between the means of the study groups (false-positive and false-negative frequencies 46% and 57%, respectively). An inverse correlation of methyl/methylene line widths with age (P less than .01), and a correlation with nitrate-requiring cardiovascular disease (P less than .05) was, however, evident. This test cannot be validly used to detect malignancy.
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Ullah, Ubaid, Safia Bano, and Shoaib Saleem. "Evaluation of Central Nervous System Tuberculomas by Using Modern Diagnostic Techniques." Pakistan Journal of Medical and Health Sciences 16, no. 6 (June 22, 2022): 16–18. http://dx.doi.org/10.53350/pjmhs2216616.

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Aim: To assess central nervous system tuberculomas by using modern MRI techniques such as Diffusion MRI (dMRI), Nuclear magnetic resonance spectroscopy (NMR spectroscopy) and BOLD venographic imaging. Study design: A retrospective study design Study setting: From 5th Feb 2021 to 5th Feb 2022 at the department of Neurology of Ibe-e-Siena Hospital, Multan. Methods: A retrospective study was conducted in the neurology department of Ibe-e-Siena Hospital & Research Institute Multan from 5th February 2021 to 5th February 2022. A total of 100 patients with suspected intracranial tuberculomas were included in the study. Advanced MRI techniques, including Diffusion MRI (dMRI), Nuclear magnetic resonance spectroscopy (NMR spectroscopy) and BOLD venographic imaging and conventional MRI, was performed on the patients. The study was approved by the ethical committee of the hospital, and all the patients provided their written consent for inclusion in the study Results: NMR spectroscopy evaluation showed that N-acetylaspartate /Creatine and N-acetylaspartate /Choline ratios of tuberculomas did not differ significantly from malignant brain lesions (p>0.04). But the malignant brain lesion (2.59) were significantly higher than the Choline/Creatine ratio of tuberculomas(1.29). BOLD venographic imaging evaluation showed no hypointense peripheral ring in malignant brain lesions but showed complete and regular rings in 36 (58.1%) of tuberculomas. Conclusion: Diffusion MRI did not help distinguish tuberculomas from metastasis and gliomas. However, NMR spectroscopy did offer this advantage by evaluating their unique metabolite pattern. BOLD venographic imaging showed the presence of a complete peripheral hypointense ring helping in diagnosing tuberculomas Keywords: Intracranial tuberculomas, Nuclear magnetic resonance spectroscopy, diffusion MRI,
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Bajju, Gauri D., Deepmala, Sunil Kumar Anand, Sujata Kundan, and Narinder Singh. "Electrochemical and Spectroscopic Characterization of Aluminium(III)-para-methyl-meso-tetraphenylporphyrin Complexes Containing Substituted Salicylates as Axial Ligands." International Journal of Electrochemistry 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/409375.

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A series of aluminium(III)-p-methyl-meso-tetraphenylporphyrin (p-CH3TPP-Al(III)) containing axially coordinated salicylate anion [p-CH3TPP-Al-X)], where X = salicylate (SA), 4-chlorosalicylate (4-CSA), 5-chlorosalicylate (5-CSA), 5-flourosalicylate (5-FSA), 4-aminosalicylate (4-ASA), 5-aminosalicylate (5-ASA), 5-nitrosalicylate (5-NSA), and 5-sulfosalicylate (5-SSA), have been synthesized and characterized by various spectroscopic techniques including ultraviolet-visible (UV-vis), infrared (IR) spectroscopy, proton nuclear magnetic resonance (1H NMR) spectroscopy,13C NMR, and elemental analysis. A detailed study of electrochemistry of all the synthesized compounds has been done to compare their oxidation and reduction mechanisms and to explain the effect of axial coordination on their redox properties.
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Szerb, Elisabeta I., Réka-Anita Domokos, Carmen Creţu, Massimo La Deda, and Vasile Chiş. "Vibrational and Nuclear Magnetic Resonance Properties of 2,2′-Biquinolines: Experimental and Computational Spectroscopy Study." Journal of Nanoscience and Nanotechnology 21, no. 4 (April 1, 2021): 2404–12. http://dx.doi.org/10.1166/jnn.2021.18969.

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Experimental (IR, Raman and NMR) techniques and quantum chemical (DFT) methods have been applied to investigate the vibrational and NMR properties of a new ligand based on 2,2′-biquinoline (bq) functionalized with polar hydrophilic tetraethylene glycol monomethylether (TEG) chains (bq_TEG). Vibrational and NMR spectra of the ligand have been explained based on DFT computational data obtained at B3LYP/6-311+G(d,p) level of theory. For the spectroscopic analysis we started from the parent molecule 2,2′-biquinoline and explained the changes in the spectra of bq_TEG in close relation to the corresponding spectra of bq. Our data point to a trans conformation of bq_TEG in solid state, as wells as in liquid phase. The excellent agreement between the experimental and computed data allowed for a reliable assignment of the vibrational and NMR spectra, both for bq and bq_TEG.
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Dissertations / Theses on the topic "³¹P nuclear magnetic resonance (NMR) spectroscopy"

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Schachter, Joyce. "Application of surface coils to in-vivo studies using ³¹P-NMR spectroscopy." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24914.

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The work described in this thesis is divided into two parts: testing and evaluation of some surface coils, and application of the surface coils to in-vivo studies. In particular, the localization properties of surface coils were examined and optimized using the highest performance coil geometry and wire. Application of the surface coil technique to in-vivo studies involved measuring changes in metabolic status of muscle and brain tissue in rats using ³¹P spectroscopy. The properties of surface coils have been studied by evaluating their excitation patterns with ¹H and ³¹P NMR spectroscopy. Surface coils, manufactured in different sizes, geometries, and materials were tested for Q factors, signal-to-noise ratios, and pulse widths required for excitation of the sample. A silver plating on the copper wire used to fabricate the surface coils was found to increase the Q and signal-to-noise of the coil. Examination of the excitation patterns of the surface coils with point samples characterized the B₁ field of the coils as decreasing axially and radially from the coil. Calculations of the magnitude of the B₁ field reveal that its dome-like shape extends to approximately one coil radius above the surface coil. It was found that samples lying outside the domain of this "sensitive volume" did not contribute to a spectrum. These data were all correlated and the "0.9" silver plated coil was deemed to be the most efficient coil with which to pursue further in-vivo studies. In-vivo ³¹P studies of rat tissues were preceded by in-vitro spectral measurements of various metabolites at physiological concentrations. These standards were used to aid in the identification of resonances in the in-vivo spectra. Metabolic changes such as artificially induced ischemia in muscle, deceased brain, and artificially induced brain dementia were compared with "normal" ³¹P spectra of anaesthetized rat tissues. It was found that oxygen deprivation is readily observed with this technique whereas the preparation of brain dementia cannot be diagnosed with ³¹P NMR spectroscopy.
Science, Faculty of
Chemistry, Department of
Graduate
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Sneddon, Scott. "Characterisation of inorganic materials using solid-state NMR spectroscopy." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/8239.

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This thesis uses solid-state nuclear magnetic resonance (NMR) spectroscopy and density functional theory (DFT) calculations to study local structure and disorder in inorganic materials. Initial work concerns microporous aluminophosphate frameworks, where the importance of semi-empirical dispersion correction (SEDC) schemes in structural optimisation using DFT is evaluated. These schemes provide structures in better agreement with experimental diffraction measurements, but very similar NMR parameters are obtained for any structures where the atomic coordinates are optimised, owing to the similarity of the local geometry. The ³¹P anisotropic shielding parameters (Ω and κ) are then measured using amplified PASS experiments, but there appears to be no strong correlation of these with any single geometrical parameter. In subsequent work, a range of zeolitic imidazolate frameworks (ZIFs) are investigated. Assignment of ¹³C and ¹⁵N NMR spectra, and measurement of the anisotropic NMR parameters, enabled the number and type of linkers present to be determined. For ¹⁵N, differences in Ω may provide information on the framework topology. While ⁶⁷Zn measurements are experimentally challenging and periodic DFT calculations are currently unreliable, calculations on small model clusters provide good agreement with experiment and indicate that ⁶⁷Zn NMR spectra are sensitive to the local structure. Finally, a series of pyrochlore-based ceramics (Y₂Hf₂₋ₓSnₓO₇) is investigated. A phase transformation from pyrochlore to a disordered defect fluorite phase is predicted, but ⁸⁹Y and ¹¹⁹Sn NMR reveal that rather than a solid solution, a significant two-phase region is present, with a maximum of ~12% Hf incorporated into the pyrochlore phase. The use of ¹⁷O NMR to provide insight into the local structure and disorder in these materials is also investigated. Once the different T₁ relaxation and nutation behaviour is considered it is shown that quantitative ¹⁷O enrichment of Y₂Sn₂O₇ is possible, and that ¹⁷O does offer a promising future tool for study.
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Wu, Xi-Li. "New techniques in nuclear magnetic resonance spectroscopy." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385872.

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Barker, P. B. "New techniques in nuclear magnetic resonance." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375213.

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Stonehouse, Jonathan. "New techniques in NMR spectroscopy." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360628.

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Talagala, Sardha Lalith. "Aspects of NMR imaging and in vivo spectroscopy." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/27550.

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The work described in this thesis deals mainly with aspects related to two- and three-dimensional NMR imaging. A detailed discussion on frequency-selective excitation using amplitude modulated rf pulses in relation to slice selection in NMR imaging has been presented. This includes the analysis and implementation of the method as well as illustrative experimental results. Several radiofrequency probe designs suitable for high field NMR imaging have been experimentally evaluated and their modification and construction are also described. The comparative results obtained indicate the merits and demerits of different designs and provide necessary guidelines for selecting the most suitable design depending on the application. Practical aspects of two- and three-dimensional imaging have been discussed and NMR images of several intact systems have been presented. Experimental methods which enable slice selection in the presence of chemically shifted species and two-dimensional chemical shift resolved imaging have "been described and illustrated using phantoms. The use of three-dimensional chemical shift resolved imaging as a potential method to map the pH and temperature distribution within an object has also been demonstrated. A preliminary investigation of the application of ³¹P NMR spectroscopy to study the biochemical transformations of the rat kidney during periods of ischemia and reperfusion has been presented.
Science, Faculty of
Chemistry, Department of
Graduate
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Almond, Graham G. "A nuclear magnetic resonance study of hydrous layer silicates." Thesis, Durham University, 1995. http://etheses.dur.ac.uk/5096/.

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This is a study of five silicates, namely makatite, kanemite, octosilicate, magadiite and kenyaite. The silicates have been analysed using a range of techniques, principally solid-state NMR spectroscopy. High-quality (^29)Si NMR spectra have been obtained for samples of all five layered sodium polysilicate hydrates. Amongst other findings, these have revealed four crystallographically distinct sites in makatite and a Q(^4):Q(^4) site ratio in kenyaite of ca. 5. Proton MAS NMR studies can produce well-resolved spectra, particularly for carefully-dried samples. Distinct water and strongly hydrogen-bonded proton species have been detected. The latter are particularly noteworthy and they are present in kanemite, octosilicate, magadiite and kenyaite, but not in makatite or layered silicic acids. Interactions between the resolved proton species have been investigated with a series of 1- and 2-dimensional experiments resulting in the detection of mixing, via spin-diffusion or chemical exchange. Sodium-23 NMR studies were complicated by second-order effects from strong quadrupolar interactions and the presence of a significant signal from a sodium chloride contamination in many samples. The latter had fooled previous authors. Acidification products of kanemite, octosilicate and magadiite were characterised by (^29)Si CP NMR, thermogravimetric analysis, 1H MAS NMR and powder X-ray diffraction. A single H-kanemite sample proved to be H(_2)Si(_2)O(_5), but two types of H-octosilicate and H-magadiite sample were prepared. These differed in the presence of interlayer water. Several CP experiments were used to investigate the relationship between (^29)Si and (^23)Na nuclei and protons in the silicates. Cross-polarisation mechanisms tended to involve magnetisation transfer from the H-bonded protons only. Their determination was possible with a consideration of the extent of spin-diffusion or chemical exchange over the time-scale of the relevant experiments. Finally, new model structures for kanemite and the interlayer space in kanemite, octosilicate, magadiite and kenyaite have been suggested, while previously- proposed silicate layers have been reconsidered.
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Keevil, Stephen Frederick. "Experimental techniques to characterise localisation in nuclear magnetic resonance spectroscopy." Thesis, King's College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268303.

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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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Champion, de Crespigny Alexander James Stephen. "Spatial localisation in nuclear magnetic resonance imaging and spectroscopy." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386006.

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Books on the topic "³¹P nuclear magnetic resonance (NMR) spectroscopy"

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1964-, Williams Anthony J., ed. Practical interpretation of P-31 NMR spectra and computer-assisted structure verification. Toronto: Advanced Chemistry Development, 2004.

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Dolphin, Bruch Martha, ed. NMR spectroscopy techniques. 2nd ed. New York: M. Dekker, 1996.

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Dingley, Andrew J., and Steven M. Pascal. Biomolecular NMR spectroscopy. Amsterdam: IOS Press, 2011.

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Keeler, James. Understanding NMR spectroscopy. 2nd ed. Chichester, U.K: John Wiley and Sons, 2010.

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Keeler, James. Understanding NMR spectroscopy. 2nd ed. Chichester: John Wiley and Sons, 2010.

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Understanding NMR spectroscopy. 2nd ed. Chichester: John Wiley and Sons, 2010.

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Abraham, Raymond John. Introduction to NMR spectroscopy. 2nd ed. Chichester: Wiley, 1988.

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Schorn, Christian. NMR spectroscopy: Data acquisition. 2nd ed. Weinheim: Wiley-VCH, 2004.

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Guenther, Harald. NMR spectroscopy: An introduction. Chichester: Wiley, 1987.

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author, Haber-Pohlmeier Sabina 1962, and Zia Wasif author, eds. Compact NMR. Berlin: Walter de Gruyter GmbH & Co. KG, 2014.

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Book chapters on the topic "³¹P nuclear magnetic resonance (NMR) spectroscopy"

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Troć, R. "U(P, S): Nuclear Magnetic Resonance (NMR) Spectroscopy." In Actinide Monochalcogenides, 635–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-47043-4_110.

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Aliev, Abil E. "Solid state NMR spectroscopy." In Nuclear Magnetic Resonance, 139–87. Cambridge: Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/9781788010665-00139.

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Aliev, Abil E. "Solid state NMR spectroscopy." In Nuclear Magnetic Resonance, 98–150. Cambridge: Royal Society of Chemistry, 2021. http://dx.doi.org/10.1039/9781839164965-00098.

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Aliev, Abil E. "Solid state NMR spectroscopy." In Nuclear Magnetic Resonance, 120–80. Cambridge: Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781839167690-00120.

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Aliev, A. E., and R. V. Law. "Solid state NMR spectroscopy." In Nuclear Magnetic Resonance, 294–347. Cambridge: Royal Society of Chemistry, 2015. http://dx.doi.org/10.1039/9781782622758-00294.

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Atta-ur-Rahman. "Experimental Procedures in NMR Spectroscopy." In Nuclear Magnetic Resonance, 87–139. New York, NY: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4612-4894-1_3.

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Atta-ur-Rahman. "Chemical Shift in 1H-NMR Spectroscopy." In Nuclear Magnetic Resonance, 1–33. New York, NY: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4612-4894-1_1.

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Atta-ur-Rahman. "Spin—Spin Coupling in 1-NMR Spectroscopy." In Nuclear Magnetic Resonance, 34–86. New York, NY: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4612-4894-1_2.

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Ashbrook, Sharon E., and Daniel M. Dawson. "NMR spectroscopy of minerals and allied materials." In Nuclear Magnetic Resonance, 1–52. Cambridge: Royal Society of Chemistry, 2016. http://dx.doi.org/10.1039/9781782624103-00001.

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Metz, Kenneth R. "NUCLEAR MAGNETIC RESONANCE (NMR) SPECTROSCOPY." In Handbook of Measurement in Science and Engineering, 2529–81. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119244752.ch70.

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Conference papers on the topic "³¹P nuclear magnetic resonance (NMR) spectroscopy"

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Aslam, Nabeel, Nicolas Palazzo, Erik Knall, Daniel Kim, Nadine Meister, Ryan Gelly, Ryan Cimmino, et al. "Nanoscale Nuclear Magnetic Resonance with Quantum Sensors enhanced by Nanostructures." In Quantum 2.0. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/quantum.2022.qw4c.3.

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Nanoscale Nuclear Magnetic Resonance (NMR) based on Nitrogen-vacancy centers in Diamond is promising for biochemistry applications. We integrate the Quantum Sensors into Nanostructures and realize NMR spectroscopy of nanoconfined liquids.
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Viol, Michael, Klaus Beck, and Alexandra Voda. "Possibilities for the use of Nuclear Magnetic Resonance Spectroscopy (NMR) in Rubber Industry." In SAE 2004 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2004. http://dx.doi.org/10.4271/2004-01-0870.

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Elyashberg, Mikhail, Eduard Martirosian, Lubov Zlatina, and Yuri Karasev. "Artificial intelligence system for molecular structure elucidation using infrared and nuclear magnetic resonance (NMR) spectra." In Fourier Transform Spectroscopy: Ninth International Conference, edited by John E. Bertie and Hal Wieser. SPIE, 1994. http://dx.doi.org/10.1117/12.166790.

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Morawitz, Falk. "Multilayered Narration in Electroacoustic Music Composition Using Nuclear Magnetic Resonance Data Sonification and Acousmatic Storytelling." In ICAD 2019: The 25th International Conference on Auditory Display. Newcastle upon Tyne, United Kingdom: Department of Computer and Information Sciences, Northumbria University, 2019. http://dx.doi.org/10.21785/icad2019.052.

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Nuclear magnetic resonance (NMR) spectroscopy is an analytical tool to determine the structure of chemical compounds. Unlike other spectroscopic methods, signals recorded using NMR spectrometers are frequently in a range of zero to 20000 Hz, making direct playback possible. As each type of molecule has, based on its structural features, distinct and predictable features in its NMR spectra, NMR data sonification can be used to create auditory ‘fingerprints’ of molecules. This paper describes the methodology of NMR data sonification of the nuclei nitrogen, phosphorous, and oxygen and analyses the sonification products of DNA and protein NMR data. The paper introduces On the Extinction of a Species, an acousmatic music composition combining NMR data sonification and voice narration. Ideas developed in electroacoustic composition, such as acousmatic storytelling and sound-based narration are presented and investigated for their use in sonification-based creative works.
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Salge, G. "Investigation of electrical treeing mechanisms in polyethylene by means of space encoded nuclear magnetic resonance (NMR) spectroscopy." In 11th International Symposium on High-Voltage Engineering (ISH 99). IEE, 1999. http://dx.doi.org/10.1049/cp:19990841.

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Stringer, Kathleen A., Natalie J. Serkova, Ken Guire, and Theodore J. Standiford. "Biologically Relevant Metabolites Of Sepsis-induced Acute Lung Injury (ALI) Identified By 1H-Nuclear Magnetic Resonance (NMR)-based Spectroscopy." In American Thoracic Society 2010 International Conference, May 14-19, 2010 • New Orleans. American Thoracic Society, 2010. http://dx.doi.org/10.1164/ajrccm-conference.2010.181.1_meetingabstracts.a3776.

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Shvalyuk, Elizaveta, Alexei Tchistiakov, and Mikhail Spasennykh. "Integration of Computed Tomography Scanning and Nuclear Magnetic Resonance Results with Conventional Laboratory Test Data for Effective Reservoir Characterization." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211638-ms.

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Abstract The paper suggests a new laboratory tests workflow, aimed at reservoir characterization and rock typing of a polimineral clastic formation, based on microstructural characteristics. The proposed approach is accompanied by a comparative study of various laboratory techniques, including CT, NMR, MICP, centrifuging, and thin section analysis. The methodology for combining quantitative porous medium characteristics, derived from these multi-scale tests is also provided. The developed laboratory test program includes porosity and permeability measurements, capillary pressure, electrical resistivity, NMR and CT-scanning tests. For initial differentiation of samples based on porosity, permeability and irreducible water saturation, we applied methods of flow zone indicator (FZI) and Winland R35. Afterwards, we performed joint interpretation of FZI with the results of centrifuging, resistivity, NMR and CT-scanning tests. Finally, for the most representative samples from the rock types, defined at previous steps, we performed X-ray fluorescence spectroscopy, XRD, MICP and thin section analyses. In our study, we applied FZI, calculated as a function of irreducible water and porosity. Compared to conventional FZI, derived from porosity and permeability, our approach enabled more reliable rock typing in both sandstones and low-permeable siltstones. CT tests showed that within the distinguished 4 rock types grain and pore sizes increase from the 1st to the 4th rock types. CT-scanning and X-ray fluorescence spectroscopy detected presence of pyrite in all samples. Siltstones contain more pyrite than sandstones that reflects deeper marine and consequently more anoxic depositional environment. The obtained NMR T2-spectra appeared to be effected by both porous medium and mineralogical composition. Pyrite inclusions caused shifting of the T2-spectra to lower values, while carbonate presence – to higher ones. Therefore, since NMR signal is effected by multiple factors, applying of a single T2cutoff value for reservoir characterization and rock typing can lead to ambiguous interpretation. The proposed algorithm for combining quantitative parameters of the porous medium allowed integration of pore size distributions, derived from CT and capillary tests. This enabled characterization of the whole range of pore sizes covered only partly by the different methods. The resulted pore size distribution enabled calibrating NMR Т2 spectra and defining individual surface relaxivity values for each rock type. The selected set of techniques allowed confident differentiation and characterization of the rock samples based on multiple parameters, which were interpreted in relationship with each other. Moreover, the developed methodology was verified by applying additional laboratory tests, which confirmed the results of the proposed rock typing and reservoir characterization.
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Sfarra, S., M. Tortora, M. Regi, C. Casieri, S. Perilli, G. Cerichelli, and D. Paoletti. "Detection of incipient defects in book bindings. A functional use of the infrared vision combined with optical and nuclear magnetic resonance (NMR) spectroscopy techniques." In 2016 Quantitative InfraRed Thermography. QIRT Council, 2016. http://dx.doi.org/10.21611/qirt.2016.119.

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Paschoal, Diego F. S., and Joyce H. C. e. Silva. "Relativistic prediction of Pt-195 NMR chemical shift using the NMR- DKH basis sets." In VIII Simpósio de Estrutura Eletrônica e Dinâmica Molecular. Universidade de Brasília, 2020. http://dx.doi.org/10.21826/viiiseedmol2020184.

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Nuclear magnetic resonance (NMR) spectroscopy has played an important role in the discovery and design of new drugs with antitumor potential and the Pt-195 NMR has a fundamental role since the Pt-195 nucleus is very sensitive to the nature of the ligands in the coordination sphere and the oxidation state of the metal. The theoretical prediction of the Pt-195 NMR chemical shift is an extremely difficult task in which several factors must be taken into accounts, such as basis sets, electronic correlation, solvent, and relativistic effects. In an earlier study, Paschoal et al. developed the NMR-DKH basis sets and a nonrelativistic protocol for predicting the Pt-195 NMR chemical shift. The authors studied a set of 258 Pt(II) complexes and obtained a mean absolute deviation (MAD) of 168 ppm and a mean relative deviation (MRD) of 5%. However, relativistic calculations with the NMR-DKH basis sets have not been performed. Thus, the present work aims to apply the NMR-DKH in predicting the Pt-195 NMR chemical shift including the relativistic effects. The cisplatin was used as a model and its geometry was optimized and characterized as a minimum point on the potential energy surface at the B3LYP/LANL2DZ/def2-SVP/COSMO level. The Pt-195 NMR chemical shift was calculated at the DFT-Functional-DKFull/NMR-DKH/COSMO, where the functionals BP86, PBE, BLYP, PBE0, and B3LYP were tested. All calculations were carried out in NWCHEM 7.0.0 program. From the calculated results, it can be observed that the pure GGA functionals showing a better performance when compared to the hybrid functional. The best result was obtained at the BLYP-DKFull/NMR-DKH/COSMO level, where a DAM and DRM of only 34 ppm and 1.6% was found.
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Li, Yue-Rong, Gavin Pereira, Masoud Kasrai, and Peter R. Norton. "Studies on ZDDP Anti-Wear Films Formed Under the Different Conditions by XANES Spectroscopy, Atomic Force Microscopy and 31P NMR." In ASME/STLE 2007 International Joint Tribology Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ijtc2007-44218.

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Antiwear (AW) films, generated from a mineral base oil containing zinc dialkyl dithiophosphate (ZDDP) additive, were extensively studied. These films were formed at various conditions such as different temperatures, various loads and rubbing times. The surface morphology of these films was investigated using atomic force microscopy (AFM) and the surface roughness of these films has been calculated from the images. X-ray absorption near edge structure (XANES) spectroscopy has been used to characterize the chemistry of these films. The intensity of phosphorus K-edge was also used to monitor the thickness of these films. Phosphorus L-edge spectra show that these films have slightly variable chemical natures. 31P Nuclear magnetic resonance (31P NMR) was used to study the ZDDP components in the residue oils. The spectra show that the primary and secondary ZDDP decompose quite differently at the various conditions. Tribological characteristics of these AW films were probed by measuring the coefficients of friction and the wear scar width of the counter faces.
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Reports on the topic "³¹P nuclear magnetic resonance (NMR) spectroscopy"

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Verkade, J. Functional group analysis in coal and on coal surfaces by NMR (nuclear magnetic resonance) spectroscopy. Office of Scientific and Technical Information (OSTI), June 1989. http://dx.doi.org/10.2172/6918499.

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Fernando, P. U. Ashvin Iresh, Gilbert Kosgei, Matthew Glasscott, Garrett George, Erik Alberts, and Lee Moores. Boronic acid functionalized ferrocene derivatives towards fluoride sensing. Engineer Research and Development Center (U.S.), July 2022. http://dx.doi.org/10.21079/11681/44762.

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In this technical report (TR), a robust, readily synthesized molecule with a ferrocene core appended with one or two boronic acid moieties was designed, synthesized, and used toward F- (free fluoride) detection. Through Lewis acid-base interactions, the boronic acid derivatives are capable of binding with F- in an aqueous solution via ligand exchange reaction and is specific to fluoride ion. Fluoride binding to ferrocene causes significant changes in fluorescence or electrochemical responses that can be monitored with field-portable instrumentation at concentrations below the WHO recommended limit. The F- binding interaction was further monitored via proton nuclear magnetic resonance spectroscopy (1H-NMR). In addition, fluorescent spectroscopy of the boronic acid moiety and electrochemical monitoring of the ferrocene moiety will allow detection and estimation of F- concentration precisely in a solution matrix. The current work shows lower detection limit (LOD) of ~15 μM (285 μg/L) which is below the WHO standards. Preliminary computational calculations showed the boronic acid moieties attached to the ferrocene core interacted with the fluoride ion. Also, the ionization diagrams indicate the amides and the boronic acid groups can be ionized forming strong ionic interactions with fluoride ions in addition to hydrogen bonding interactions.
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Nuclear Magnetic Resonance Spectroscopy. ConductScience, November 2019. http://dx.doi.org/10.55157/cs20191121.

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Two molecules may have the same number and type of atoms, but their properties would change depending on how they are arranged (i.e., the bonds linking them and their orientation). As an example, Ethanol and Dimethyl ether, both have one oxygen, two carbon, and six hydrogen atoms, but the structures and properties of both these compounds are different. Ethanol exists as a liquid and Dimethyl ether, on the other hand, is a poisonous gas . Thus, it is crucial for scientists to identify the exact structure of the compounds in order to understand their properties. Nuclear Magnetic Resonance (NMR) spectroscopy is a technique used to precisely identify the molecular structure of the compound . NMR results for unknown compounds can be scanned with respect to a library of known compounds to reveal the identity .
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