Academic literature on the topic 'NMR spectrometers'

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Journal articles on the topic "NMR spectrometers"

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Chakrapani, Sneha B., Michael J. Minkler, and Bryan S. Beckingham. "Low-field 1H-NMR spectroscopy for compositional analysis of multicomponent polymer systems." Analyst 144, no. 5 (2019): 1679–86. http://dx.doi.org/10.1039/c8an01810c.

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Gomes, Bruna, Carlos Lobo, and Luiz Colnago. "Monitoring Electrochemical Reactions in Situ with Low Field NMR: A Mini-Review." Applied Sciences 9, no. 3 (February 1, 2019): 498. http://dx.doi.org/10.3390/app9030498.

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The number of applications of time domain NMR using low-field spectrometers in research and development has been steadily increasing in recent years with applications ranging from quality control of industrial products to the study of physical and chemical properties of a wide array of solid and liquid samples to, most recently, electrochemical studies. In this mini-review we summarize the progress that has been achieved in the coupling between time domain NMR (using low-field spectrometers) and electrochemistry and how the challenges that this coupling poses have been overcome over the years. We also highlight the effect that the static magnetic field of the NMR spectrometer has on the electrochemical systems.
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Akay, Cengiz, and Aytaç Yalçiner. "A New Weak Field Double Resonance NMR Spectrometer." Zeitschrift für Naturforschung A 50, no. 2-3 (March 1, 1995): 177–85. http://dx.doi.org/10.1515/zna-1995-2-309.

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Abstract Weak field NMR and double resonance spectrometers are mostly homemade. In this work, some electronic units of such a spectrometer operating at 1.437 mT were designed and realized by includ­ing new integrated circuits: an audio generator, digital sweep generator, digital additional field and delay unit, Quartz generator, NMR detector(Q-meter), AF-narrowband amplifier, phase shifter and phase sensitive detector.
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Riegel, Susanne D., and Garett M. Leskowitz. "Benchtop NMR spectrometers in academic teaching." TrAC Trends in Analytical Chemistry 83 (October 2016): 27–38. http://dx.doi.org/10.1016/j.trac.2016.01.001.

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Lilly, Kevi. "5534780 Sample changer for NMR spectrometers." Magnetic Resonance Imaging 15, no. 3 (January 1997): XX. http://dx.doi.org/10.1016/s0730-725x(97)82890-1.

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Danieli, Ernesto, Juan Perlo, Bernhard Blümich, and Federico Casanova. "Small Magnets for Portable NMR Spectrometers." Angewandte Chemie International Edition 49, no. 24 (May 5, 2010): 4133–35. http://dx.doi.org/10.1002/anie.201000221.

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Jonsen, Paul. "5036279 Portable NMR and NQR spectrometers." Magnetic Resonance Imaging 11, no. 2 (January 1993): V. http://dx.doi.org/10.1016/0730-725x(93)90057-k.

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van Os, J. W. M., G. J. W. Steeg, and W. S. Veeman. "Direct digital frequency modulation in NMR spectrometers." Review of Scientific Instruments 62, no. 5 (May 1991): 1285–87. http://dx.doi.org/10.1063/1.1142486.

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Cosgrove, T., S. Neck, and N. A. Finch. "A simple phase shifter for NMR spectrometers." Journal of Magnetic Resonance (1969) 62, no. 2 (April 1985): 309–10. http://dx.doi.org/10.1016/0022-2364(85)90064-2.

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Rachineni, Kavitha, Veera Mohana Rao Kakita, and Ramakrishna V. Hosur. "Ultra-high resolution in low field tabletop NMR spectrometers." RSC Adv. 7, no. 77 (2017): 49102–4. http://dx.doi.org/10.1039/c7ra09594e.

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An approach for resolution enhancement is proposed, for data acquired on low field tabletop NMR spectrometers by employing processing-based (generalized indirect covariance) advancements in pure shift NMR.
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Dissertations / Theses on the topic "NMR spectrometers"

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Chaudhry, Humayun Iqbal. "An evaluation of the performance and mechanistic action of the costabiliser N-phenyl-3-acetyl pyrrolidine-2,4-dione and its derivatives in poly(vinyl chloride)." Thesis, Manchester Metropolitan University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311051.

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CUNHA, TATIANA F. da. "Aplicação do poli(epsilon-caprolactona) com estrutura estrelada para obtenção de microesferas biorreabsorvíveis." reponame:Repositório Institucional do IPEN, 2012. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10544.

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Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Ariando, David Joseph. "A Portable Low-Cost NMR Spectrometer." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1515170982121573.

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Digby, Megan Elizabeth. "Broadband DC SQUID NMR spectrometry on metals." Thesis, Royal Holloway, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322702.

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This Thesis describes the development of a broadband pulsed NMR spectrometer, based on a sensitive DC SQUID amplifier with wideband electronics, to observe directly the free precession of nuclear spins in bulk metallic samples (with broad NMR linewidths) at Larmor frequencies cß/2 ,r below 1 MHz. The sample is located inside a pickup coil, which forms a superconducting flux transformer with the input coil of the SQUID. The SQUID amplifier operates in a flux-locked-loop (FLL), hence it is sensitive to signals from DC up to the bandwidth of the FLL electronics. A modified commercial DC SQUID amplifier, with modulated feedback electronics, observed NMR signals from bulk platinum samples (T2 - 1.1 ms), at 1.5 K. The SQUID amplifier had a 50 kHz bandwidth, a dead-time - 50 μs, and a coupled energy sensitivity cc - 500h. The measurements showed that it is important to minimise the time-constant of eddy current decay in the sample, which scales with r2, as expected, where r is the sample dimension. A DC SQUID amplifier with additional positive feedback and wideband electronics configured using the direct offset integration technique, observed NMR signals from a bulk aluminium sample (T2 - 30 μs) at 20 mK. This SQUID amplifier had a 7.5 MHz bandwidth, the dead-time was 55 μs for small transmitter pulses and e,; - 600h. The use of a strongly coupled input coil with the SQUID necessitated damping across the coil to smooth out the SQUID flux-voltage characteristicThe NMR measurements showed that eddy current decay is less important if the NMR signal size is enhanced by cooling the sample. Measurements also confirmed that the NMR signal from bulk metal is proportional to 4c0, and that a reasonable estimate of the signal size is made by assuming the signal is due to spins within half the skin-depth of the surface
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Hughes, Leslie Peter. "Maximum entropy methods applied to NMR and mass spectrometry." Thesis, Durham University, 2001. http://etheses.dur.ac.uk/3785/.

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Maximum Entropy data processing techniques have been widely available for use by NMR spectroscopisis and mass spectrometrisls since they were first reported as a tool for enhancing damaged images. However, the techniques have been met with a certain amount of scepticism amongst the spectroscopic community; not least their apparent ability to get something for nothing. The aim of the work presented in this thesis is to demonstrate that if these techniques are used carefully and in appropriate situations a great deal of information can be extracted from both NMR and mass spectra. This has been achieved by using the Memsys5 and Massive Inference algorithms to process a range of NMR and mass spectra which suffer from some of the problems which are commonly encountered in spectroscopy, i.e. poor resolution, poor sensitivity, how to process spectra with a wide range of peak widths. The theory underlying the two algorithms is described simply and the techniques for selecting appropriate point spread functions are outlined. Experimental rather than simulated spectra are processed throughout. Throughout this work the Maximum Entropy results are freated with scepticism. A pragmatic approach is employed to demonstrate that the results are valid. It is concluded that the Maximum Entropy methods do have their place amongst the many other data processing strategies used by spectroscopists. If used correctly and in appropriate situations the results can be worth the investment in time needed to obtain a satisfactory result.
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McGill, Colin Adam. "Studies of low-field nuclear magnetic resonance and Raman spectrometries for process analytical chemistry." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248282.

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Barlow, G. K. "Development and application of some techniques for proton and sodium NMR." Thesis, University of York, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383846.

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Gädke, Achim, Markus Rosenstihl, Christopher Schmitt, Holger Stork, and Nikolaus Nestle. "DAMARIS – a flexible and open software platform for NMR spectrometer control." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-194317.

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Home-built NMR spectrometers with self-written control software have a long tradition in porous media research. Advantages of such spectrometers are not just lower costs but also more flexibility in developing new experiments (while commercial NMR systems are typically optimized for standard applications such as spectroscopy, imaging or quality control applications). Increasing complexity of computer operating systems, higher expectations with respect to user-friendliness and graphical user interfaces as well as increasing complexity of the NMR experiments themselves have made spectrometer control software development a more complex task than it used to be some years ago. Like that, it becomes more and more complicated for an individual lab to maintain and develop an infrastructure of purely homebuilt NMR systems and software. Possible ways out are: ● commercial NMR hardware with full-blown proprietary software or ● semistandardized home-built equipment and common open-source software environment for spectrometer control. Our present activities in Darmstadt aim at providing a nucleus for the second option: DArmstadt MAgnetic Resonance Instrument Software (DAMARIS) [1]. Based on an ordinary PC, pulse control cards and ADC cards, we have developed an NMR spectrometer control platform that comes at a price tag of about 8000 Euro. The present functionalities of DAMARIS are mainly focused on TD-NMR: the software was successfully used in single-sided NMR [2], pulsed and static field gradient NMR diffusometry [3]. Further work with respect to multipulse/multitriggering experiments in the time domain [4] and solid state NMR spectroscopy multipulse experiments are under development.
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Pagnano, Marco Aurelio de Oliveira. "Automação de um espectrômetro por ressonância magnética nuclear pulsada." Universidade de São Paulo, 1993. http://www.teses.usp.br/teses/disponiveis/54/54132/tde-19082014-101639/.

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Este trabalho consistiu na automação do espectrômetro de Ressonância Magnética Nuclear Pulsada existente no laboratório dos professores José Pedro Donoso e Claudio José Magon. Foram efetuados circuitos adicionais e melhorias no equipamento que eles possuíam, à nível de hardware e software. Foram construídas e programadas interfaces paralelas que ligam o microcomputador a um gerador de pulsos, fabricado pela Tecmag Inc., e a um digitalizador rápido (10 ns) Nicolet 430. O programador de pulsos pode acionar independentemente 75 linhas durante o intervalo de tempo subdividido em 2048 eventos, também independente. O software desenvolvido permite a programação de todas as linhas e eventos de forma eficiente e prática. Foi todo escrito em linguagem C, é modular, portátil, e permite a geração de seqüências de pulsos sofisticadas e também o controle da aquisição e transferência de dados
This work describes the Project developped to automatize the pulsed nuclear magnetic resonance spectrometer housed in the laboratory of the professors José Pedro Donoso e Cláudio José Magon. To satisfy our needs we have improved their old equipment, at the level of hardware and software. Were built and programmed the parallel interface between the microcomputer and a pulse programmer made by Tecmag Inc. and with a fast digitizer (10 ns) Nicolet 430. The pulse programmer can control 75 independent output channels during 2048 time intervals. The software we developped allow us to control the whole pulse sequence on a very efficient and practical way. It was written in C-language, and provides the timing signals necessary to generate sofisticated pulse seqüencies, the data acquisition and data transfer to the host computer
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Gipson, Geoffrey T. Sokhansanj Bahrad. "Discovery Of discriminative LC-MS and 1H NMR metabolomics markers /." Philadelphia, Pa. : Drexel University, 2008. http://hdl.handle.net/1860/2766.

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Books on the topic "NMR spectrometers"

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Marshall, Alan G. Fourier transforms in NMR, optical, and mass spectrometry: A user's handbook. Amsterdam: Elsevier, 1990.

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Alonso-Salces, M. Rosa. Authentication of virgin olive oil using NMR and isotopic fingerprinting. Hauppauge, N.Y: Nova Science Publishers, 2011.

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Vladislav, Orekhov, and SpringerLink (Online service), eds. Novel Sampling Approaches in Higher Dimensional NMR. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.

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Ryabov, Vladimir. Oil and Gas Chemistry. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1017513.

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The textbook provides up-to-date data on the composition and properties of hydrocarbons and other oil and gas compounds, on the physical and chemical methods and methods for separating and identifying oil components (molecular spectroscopy, mass spectrometry, NMR spectroscopy, electron paramagnetic resonance, atomic adsorption spectroscopy, neutron activation analysis). The chemistry and mechanism of thermal and catalytic transformations of oil components in the main processes of oil raw materials processing, as well as the problems of the origin of oil and the transformation of oil in the environment are considered. Meets the requirements of the federal state educational standards of higher education of the latest generation. It is intended for training in the course "Chemistry of oil and gas", for the preparation of bachelors, masters and certified specialists in the field of training "Oil and Gas business". It can be used for training in other areas in oil and gas universities and be of interest to specialists working in the field of chemistry and technology of oil refining and in other areas of the oil and gas industry.
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Harwood, John S., and Huaping Mo. Practical NMR Spectroscopy Laboratory Guide : Using Bruker Spectrometers: Using Bruker Spectrometers. Elsevier Science & Technology Books, 2015.

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Marshall, A. G., and F. R. Verdun. Fourier Transforms in NMR, Optical, and Mass Spectrometry. Elsevier Science, 1989.

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Fourier Transforms in NMR, Optical, and Mass Spectrometry. Elsevier, 1990. http://dx.doi.org/10.1016/c2009-0-14190-9.

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Fuller, Scott E. NMR study of heavily doped Si:B. 1994.

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1954-, Jones Christopher, Mulloy Barbara, and Thomas Adrian H, eds. Spectroscopic methods and analyses: NMR, mass spectrometry, and metalloprotein techniques. Totowa, N.J: Humana Press, 1993.

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Fourier Transforms in Nmr, Optical, and Mass Spectrometry: A Users Handbook. Elsevier Science & Technology, 1990.

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Book chapters on the topic "NMR spectrometers"

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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, 499–509. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5868-8_26.

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Felder, Jörg. "Spectrometer Hardware." In Single-Sided NMR, 221–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16307-4_10.

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Wenzel, Thomas J. "Writing More Competitive Grant Proposals for NMR Spectrometers: Research and Curriculum Programs of the National Science Foundation." In ACS Symposium Series, 321–34. Washington, DC: American Chemical Society, 2013. http://dx.doi.org/10.1021/bk-2013-1128.ch021.

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Kemp, William. "The NMR Spectrometer." In NMR in Chemistry, 29–44. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-18348-7_3.

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Sørland, Geir Humborstad. "PFG NMR Spectrometer." In Dynamic Pulsed-Field-Gradient NMR, 105–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44500-6_4.

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Hummel, Dietrich O. "Nuclear Magnetic Resonance (NMR) Spectrometry." In Atlas of Plastics Additives, 71–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-642-56211-2_6.

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Lindon, John C. "NMR Spectrometers." In Encyclopedia of Spectroscopy and Spectrometry, 1576–83. Elsevier, 1999. http://dx.doi.org/10.1006/rwsp.2000.0204.

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Lindon, John C. "NMR Spectrometers." In Encyclopedia of Spectroscopy and Spectrometry, 1872–80. Elsevier, 2010. http://dx.doi.org/10.1016/b978-0-12-374413-5.00079-8.

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Lindon, J. C. "NMR Spectrometers." In Encyclopedia of Spectroscopy and Spectrometry, 224–31. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-803224-4.00079-0.

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Jardetzky, Oleg. "Simple Insights from the Beginnings of Magnetic Resonance in Molecular Biology." In Biological NMR Spectroscopy. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195094688.003.0006.

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Birthday symposia inevitably provide an opportunity for reflection. Noting that greater minds than mine have offered an apology for their life (St. Augustine, 1853 edition; St. Thomas Aquinas; John Henry cardinal Newman, 1864), I shall attempt to answer the question: What have been the lasting contributions of my generation - the generation that began its work before Richard Ernst’s epoch making development of 2D NMR, and the equally momentous development of high field spectrometers, pioneered by Harry Weaver at Varian, Rex Richards at Oxford and Gunther Laukien at Bruker, revolutionized the technology and put biological applications within everyone’s reach? I offer these insights in the spirit that to fully understand a subject one must understand its history. The essence of scientific endeavor is to see something no one has seen before - or understand something no one had understood before. If there had been such a contribution, it was to understand what biological questions could be asked by NMR and to develop prototype experiments showing how. Difficult as it is to imagine this today when such understanding is taken for granted, the now obvious just wasn’t obvious then. Quite the contrary: well considered expert opinion of the day held the undertaking to be of very dubious merit. Linus Pauling, with whom it was my great fortune to spend my postdoctoral year, was never much interested in nuclear magnetic resonance (and did not think much of its promise for biological applications, as he clearly pointed out at this symposium). But, Linus Pauling firmly believed in giving the young the freedom to explore, and so the first crude interpretation of a protein NMR spectrum, taken a few weeks earlier by Martin Saunders, Arnold Wishnia and J. G. Kirkwoodat Yale, was based on the first amino acid and peptide spectra we had taken at Caltech. When I got my first faculty job at Harvard, and wanted to apply for an NMR spectrometer, it was not quite as easy.
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Conference papers on the topic "NMR spectrometers"

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Tian, Minghua, Hongfei Liu, and Zhong Chen. "Application of software defined radio in 500MHz NMR spectrometers." In Instruments (ICEMI). IEEE, 2009. http://dx.doi.org/10.1109/icemi.2009.5274048.

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Ariando, David, Yiqiao Tang, Shin Utsuzawa, Yi-Qiao Song, and Soumyajit Mandal. "A Compact GaNFET-Based Power Amplifier for ASIC-Based Miniature NMR Spectrometers." In 2021 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2021. http://dx.doi.org/10.1109/iscas51556.2021.9401435.

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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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Sousa, Duarte M., Gil D. Marques, and Pedro J. Sebastiao. "Reducing the size of Fast Field Cycling NMR spectrometers based on the use of IGBTs." In 2009 IEEE International Conference on Industrial Technology - (ICIT). IEEE, 2009. http://dx.doi.org/10.1109/icit.2009.4939549.

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Kitagawa, Kuniyuki, Shigeaki Morita, Kenji Kodama, and Kozo Matsumoto. "Spectroscopic Monitoring of Energy Systems (Calvin W. Rice Lecture)." In ASME 2009 Power Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/power2009-81047.

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A review is presented for monitoring of chemical species in flames and plasmas used for energy systems. The monitoring systems studied in our group include the followings. 1. Developments and applications of planar laser induced fluorescence spectrometry (PLIF) using isotope effect and laser-induced plasma spectrometry (LIPS) for two-dimensional combustion analyses. 2. Development of direct measurements of chemical species during combustion by coupling flames and mass spectrometers. 3. Development of in-situ monitoring of polymer electrolyte fuel cells by near infrared spectrometry (NIR).
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Le Bec, Gael, Kosai Raoof, and Jean-Paul Yonnet. "Inside-out NMR probe for portable spectrometry." In Conference Proceedings. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2006. http://dx.doi.org/10.1109/iembs.2006.260454.

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Le Bec, Gael, Kosai Raoof, and Jean-Paul Yonnet. "Inside-out NMR probe for portable spectrometry." In Conference Proceedings. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2006. http://dx.doi.org/10.1109/iembs.2006.4397800.

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Ha, Dongwan, Nan Sun, Jeffrey Paulsen, Yiqiao Song, Yiqiao Tang, Sungjin Hong, and Donhee Ham. "Integrated CMOS spectrometer for multi-dimensional NMR spectroscopy." In 2017 IEEE 60th International Midwest Symposium on Circuits and Systems (MWSCAS). IEEE, 2017. http://dx.doi.org/10.1109/mwscas.2017.8053116.

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Keraenen, Kimmo, Pentti Karioja, Outi Rusanen, Jussi Tenhunen, Martti Blomberg, and Heikki Lehto. "Electrically tunable NIR spectrometer." In Lasers and Optics in Manufacturing III, edited by Olivier M. Parriaux, Ernst-Bernhard Kley, Brian Culshaw, and Magnus Breidne. SPIE, 1997. http://dx.doi.org/10.1117/12.281225.

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Jawla, Sudheer, Marcel Reese, Christy George, Chen Yang, Michael Shapiro, Robert Griffin, and Richard Temkin. "330 GHz / 500 MHz Dynamic Nuclear Polarization-NMR spectrometer." In 2016 IEEE International Vacuum Electronics Conference (IVEC). IEEE, 2016. http://dx.doi.org/10.1109/ivec.2016.7561973.

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Reports on the topic "NMR spectrometers"

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Black, Bruce Elmer. Methyl quantum tunneling and nitrogen-14 NQR NMR studies using a SQUID magnetic resonance spectrometer. Office of Scientific and Technical Information (OSTI), July 1993. http://dx.doi.org/10.2172/10125943.

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