Relevant bibliographies by topics / High resolution ultrasonic spectroscopy

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'High resolution ultrasonic spectroscopy'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "High resolution ultrasonic spectroscopy"

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Buckin, Vitaly. "High-resolution ultrasonic spectroscopy." Journal of Sensors and Sensor Systems 7, no. 1 (March 29, 2018): 207–17. http://dx.doi.org/10.5194/jsss-7-207-2018.

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Abstract. High-resolution ultrasonic spectroscopy (HR-US) is an analytical technique for direct and non-destructive monitoring of molecular and micro-structural transformations in liquids and semi-solid materials. It is based on precision measurements of ultrasonic velocity and attenuation in analysed samples. The application areas of HR-US in research, product development, and quality and process control include analysis of conformational transitions of polymers, ligand binding, molecular self-assembly and aggregation, crystallisation, gelation, characterisation of phase transitions and phase diagrams, and monitoring of chemical and biochemical reactions. The technique does not require optical markers or optical transparency. The HR-US measurements can be performed in small sample volumes (down to droplet size), over broad temperature range, at ambient and elevated pressures, and in various measuring regimes such as automatic temperature ramps, titrations and measurements in flow.
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Buckin, Vitaly, and Evegny Kudryashov. "Super sonic: High-resolution ultrasonic spectroscopy." Biochemist 24, no. 4 (August 1, 2002): 25–27. http://dx.doi.org/10.1042/bio02404025.

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High-resolution ultrasonic spectrometry is a novel analytical technique with enormous potential for the investigation of a wide range of samples and dynamic processes. The non-destructive technique is based on measuring the changes that take place to ultrasonic waves as they pass through materials.
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Tian, Zhen, Nai Ci Bing, and Hong Yong Xie. "High-Resolution Ultrasonic Spectroscopy for Crystallization Process." Advanced Materials Research 508 (April 2012): 146–50. http://dx.doi.org/10.4028/www.scientific.net/amr.508.146.

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High-Resolution Ultrasonic Spectroscopy (HRUS) is a novel analytical technique for non-destructive material analysis for a wide range of samples and processes. This technique is based on precision measurements of velocity and attenuation of acoustical waves at high frequencies propagating through materials. It has considerable advantages over many alternative technologies because it can be applied to systems that are optically opaque and concentrated without the need of any sample preparation. It provides an unprecedented range of new analytical capabilities for research, product development, quality and process control. Applications of this technique include analysis of solution-phase crystallization, aggregation and gelation phenomena, particle sizing, stability of emulsions and suspensions, microstructural transitions and pharmaceutical manufacturing. Here, we review the theory of the HRUS and its applications on crystallization process.
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Kučerík, J., H. Čechlovská, P. Bursáková, and M. Pekař. "Lignite humic acids aggregates studied by high resolution ultrasonic spectroscopy." Journal of Thermal Analysis and Calorimetry 96, no. 2 (November 11, 2008): 637–43. http://dx.doi.org/10.1007/s10973-008-9391-6.

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SMYTH, C. "High-resolution ultrasonic spectroscopy for analysis of industrial emulsions and suspensions." Journal of the Association for Laboratory Automation 9, no. 2 (April 2004): 87–90. http://dx.doi.org/10.1016/j.jala.2004.01.008.

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Resa, P., E. Kudryashov, and V. Buckin. "Direct real time monitoring of cellulose saccharification using high-resolution ultrasonic spectroscopy." New Biotechnology 25 (September 2009): S264—S265. http://dx.doi.org/10.1016/j.nbt.2009.06.591.

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Kargerová, Andrea, and Miloslav Pekař. "High-Resolution Ultrasonic Spectroscopy Study of Interactions between Hyaluronan and Cationic Surfactants." Langmuir 30, no. 40 (October 3, 2014): 11866–72. http://dx.doi.org/10.1021/la501852a.

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Cespi, Marco, Giulia Bonacucina, Giovanna Mencarelli, Stefania Pucciarelli, Gianfabio Giorgioni, and Giovanni F. Palmieri. "Monitoring the aggregation behaviour of self-assembling polymers through high-resolution ultrasonic spectroscopy." International Journal of Pharmaceutics 388, no. 1-2 (March 2010): 274–79. http://dx.doi.org/10.1016/j.ijpharm.2009.12.053.

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Dwyer, Catherine, Liam Donnelly, and Vitaly Buckin. "Ultrasonic analysis of rennet-induced pre-gelation and gelation processes in milk." Journal of Dairy Research 72, no. 3 (May 23, 2005): 303–10. http://dx.doi.org/10.1017/s0022029905001020.

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Dynamics of micro-structural changes in milk during the renneting process were analysed using high-resolution ultrasonic spectroscopy in combination with dynamic rheology and NIR transmission measurements. Two independent ultrasonic parameters, velocity and attenuation were measured in the frequency range 2 to 15 MHz, as a function of time after addition of rennet to milk. The results show an initial decrease of 20 nm for the average diameter of micelles caused by hydrolysis of the κ-casein ‘hairy’ layer followed by an aggregation of the micelles into small clusters (effective aggregation number of 3) and then formation of the gel structure. It was found that evolution of ultrasonic attenuation in the renneting process could well be described by the scattering of the ultrasonic waves on aggregates. The evolution of ultrasonic velocity is well described by the scattering theory but deviates from the predicted curve at the gelation stage of the process, which shows the difference in propagation of ultrasonic waves in a gel structure compared with dispersions. Overall, we found high-resolution ultrasonic spectroscopy to be a powerful tool for analysis of microscopic processes in the formation of milk gel. It allows the characterisation of the pre-gelation processes, such as hydrolysis and aggregation, and the initial stages in the formation of the gel network as well as monitoring of the microscopic evolution in the gel at the post-gelation stage.
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Buckin, V., P. Resa, and E. Kudryashov. "Ultrasonic enzyme assays. Real time monitoring of enzyme reactions in solutions and complex media using high-resolution ultrasonic spectroscopy." New Biotechnology 25 (September 2009): S130. http://dx.doi.org/10.1016/j.nbt.2009.06.439.

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Dissertations / Theses on the topic "High resolution ultrasonic spectroscopy"

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Poledňáková, Halina. "Teplotní závislost karagenanu a hyaluronanu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316690.

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This diploma thesis focuses on the study of temperature dependence of -carrageen, hyaluronan of low molecular weight (250–450 kDa) and hyaluronan of high molecular weight (1 500–1 750 kDa) in aqueous solutions. The description of temperature depending changes in properties of these substance is based on rheological method. This work concentrates on the characterization of viscoelasticity through measurement of the storage (elastic) and loss (viscous) modulus using -carrageen and hyaluronan solutions of different molecular weights and different concentrations depending on temperature (20–50 °C, alternatively, in carrageen, 20–80 °C). The temperature dependence was further measured using an uncommon technique called high resolution ultrasonic spectroscopy (HR-US) which measured relative velocity of selected concentrations of -carrageen and hyaluronan of high molecular weight depending on the temperature of heating and cooling (20–80 °C). The measurements of temperature dependence were carried out for varied oscillation frequencies of rheometer sensor/frequency of ultrasonic waves. Knowledge of temperature dependence of the investigated substances may be applied in drug chemistry, primarily with respect to degradation due to high temperatures. The measured data gives information about sol-gel temperature and gel-sol temperature of carrageen.
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Trtek, Jan. "Interakce hyaluronanu s tenzidem CAE." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-376801.

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The diploma thesis is focused on the study of interactions between hyaluronan of various molecular weights with CAE surfactant. This surfactant does not have the exact composition and there is not known their molecular weight. One of the main parameters needed to describe the interactions between surfactant and hyaluronan, there is the determination of critical micellar concentration. The value of critical micellar concentration of CAE is not known yet. All measurements were made for solutions in aqueous solution and 0.15 M NaCl. The determination of the molecular weight of this surfactant was performed by the technique SEC-MALS-dRI. High resolution ultrasonic spectroscopy was chosen to determine the critical micellar concentration and tensiometry was chosen as a complementary method. The interactions of CAE surfactant with polysaccharide of hyaluronan were showed by high resolution ultrasonic spectroscopy and densitometry. Compressibility was calculated from ultrasonic velocity and density.
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Čechlovská, Hana. "Studium hydrofobních domén v huminových kyselinách." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-233282.

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Fyzikálně-chemická povaha hydrofobních domén huminových kyselin byla studována z několika hledisek. K objasnění významu fluorescenčních spekter byly vzorky podrobeny sekvenční frakcionaci, která pomohla k částečnému objasnění vlivu vodorozpustných složek, volných a vázaných lipidů na optické vlastnosti huminových kyselin. Výsledky naznačily, že fluorescenční píky tradičně přiřazované superpozici jednotlivých struktur jsou spíše důsledkem agregačních vlastností huminových molekul tvořících vlivem hydrofobního efektu zdánlivě vysoce aromatické struktury. Dále pak bylo zjištěno, že na optických vlastnostech huminových kyselin mají podíl i molekuly, které nemají primárně fluoroforní nebo chromoforní vlastnosti. Tento pohled je v souladu s teorií supramolekulárního uspořádání huminových kyselin. Dále byly studovány agregace, konformační chování a termodynamická stabilita huminových kyselin pomocí metody vysoce rozlišovací ultrazvukové spektroskopie. Bylo prokázáno, že huminové kyseliny mají schopnost agregovat už od velmi nízkých koncentrací (
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Jugl, Adam. "Studium interakcí hyaluronan-aminokyseliny." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240595.

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The master´s thesis deals with the study of the interaction between the polysaccharide hyaluronan of diffrerent molecular weights with the amino acids arginine, lysine, arginine hydrochloride and 6-aminocaproic acid. They are expected interaction between carboxyl groups of hyaluronan and amino groups of amino acids. These interactions were investigated by using ultrasonic spectroscopy, DLS, measuring pH and conductivity. Obtained results were compared with sodium polystyrene sulfonate. With ultrasonic spectroscopy was observed a change of concentration inkrement for titration of amino acid to water or polymers solutions especially for high molecular weight hyaluronan and for NaPSS in combination with 6AKK in concentration range of added amino acid 0–30 mM. The size of this change could mean a degree of interaction between polymers and amino acids. This theory has not been confirmed by other methods. By pH and conductivity measurements interations between arginine and low molecular weight hyaluronan and NaPSS were only confirmed. There was no possibility to make unequivocal conclusions from determination of particle size and zeta potential by DLS. Overall, the issue of the interaction of amino acids with polyanions was proved above expectations complex and will be appropriate to further expand the observations made in this thesis.
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Sovová, Šárka. "Vliv "zaplňovacích" činidel na interakce DNA-tenzid." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316190.

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Tato diplomová práce se zabývá vlivem zaplňovacích činidel na interakce v systému DNA-tenzid. DNA o velikosti 4017 párů bází byla připravena polymerázovou řetězovou reakcí, jako templát byl použit plasmid pSB-E1g. Polyetylen glykol (PEG) byl použit jako zaplňovací činidlo a jeho vliv na DNA-tenzid interakce byl zkoumán experimenty založenými na fluorescenci a gelové elektroforéze. Také byl studován vliv iontové síly za použití NaBr na interakce DNA-tenzid za použití zaplňovacího činidla. Data byla vyhodnocena a evaluována v této práci. V úvahu byl brán i možný vliv polyetylen glykolu na kritickou micelarní koncentraci (CMC) tenzidu, bylo provedeno měření CMC pomocí ultrazvuku s vysokým rozlišením, avšak nebyl zjištěn žádný značný vliv zaplňovacího činidla na CMC tenzidu. Část této práce bude zahrnuta v publikaci s anglickým názvem Combined role of macromolecular crowding and cationic surfactant in efficient DNA condensation.
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Hurčíková, Andrea. "Charakterizace hyaluronanu a jeho interakcí s tenzidy ultrazvukovou spektroskopií a densitometrií." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-233394.

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This disertation thesis is focused on the study of physico-chemical interactions of hyaluronan (with molecular weights from 10 to 1750 kDa) with cationic surfactants measured using uncommon technique named high resolution ultrasonic spectroscopy. Densitometer was also used for the study of these interactions, in measuring of density and ultrasonic velocity of hyaluronan with different molecular weight in dependence on elevated temperature (25 50 °C). The aim is the determination of critical micelle concentration (CMC) and critical aggregation concentration (CAC) of the suractants in the absence and in the presence of hyaluronan with various molecular weights. Interactions in this system are important for the design of the systems for the targeted delivery, especially for the drugs. The experiments were made in water and sodium chloride solution. The significant breakpoint in the ultrasonic velocity showed changes in the system hyaluronan-surfactant.
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Goode, Ashley Harford. "High resolution ultrasonic imaging system." Thesis, University of Portsmouth, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329278.

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Drake, Jeremy J. "High resolution stellar spectroscopy." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236268.

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McLaren, S. "High-resolution ultrasonic non-destructive testing." Thesis, City University London, 1987. http://openaccess.city.ac.uk/8335/.

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The use of ultra-short pulse wideband ultrasonic transducers in Non-Destructive-Testing (NDT) has been investigated both theoretically and experimentally. It is demonstrated that the resolution of pulse-echo NDT is affected by diffraction effects which also complicate the interpretation of echo signals. These diffraction effects are interpreted in terms of the plane- and edge-wave model of *transducer fields. Improverents can be obtained by the use of non-uniformly excited transducers of two basic types: the first, the plane-wave-only (PWO) source; is more strongly excited at its centre than towards the rim, where the excitation is gradually reduced to zero in order to remove the edge wave. The second type, an edge-wave-only (EWO) source, is more strongly excited at its rim than in the centre, thereby effectively removing the plane wave. Computer modelling of pressure waveforms in the field of PWO and EWO sources has been carried out using an extension to the impulse response method. Experimental point-pressure waveform measurements in the field of a prototype EWO transducer, made using a miniature ultrasonic probei are in reasonable agreement with the calculated results. Detailed calculations are made of the transmit-receive mode (pulse-echo) responses arising from solid targets of various size in a flu- id medium interrogated by uniformly and non-uniformly excited sources. The theoretically predicted results are in good agreement with experimentally measured results obtained using a conventional transducer and an equivalent prototype EWO transducer. The effects of target size, field position and material on both the amplitude and shape of the echo responses are investigated. The structure of the responses is explained in terms of the plane and edge waves radiated by the source. Implications for the use of techniques to both size (Distance, Gain, Size curves) and characterise (ultrasonic spectroscopy) defects are examined. The applications of new, nonuniformly excited transducers in high-resolution NDT and ultrasonic imaging are evaluated.
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Anderson, Darlene. "Studies in high resolution spectroscopy." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26766.

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The ground state microwave spectra of hypochlorous acid (HOCl), carbonylchlorofluoride (FClCO), and N-chlorodifluoromethylenimine (CF₂NCI), have been measured from 8 — 80 GHz and analyzed. The 8[sup 2/sub0] vibrational band of aminoborane (NH₂BH₂) near 1223 cm⁻¹ has been recorded at a resolution of 0.004 cm⁻¹ and analyzed. HOCl: Rotational constants and quartic centrifugal distortion constants were obtained for the following four isotopic species of hypochlorous acid: D¹⁶O³⁵Cl, D¹⁶O³⁷Cl, H¹⁸O³⁵Cl and H¹⁸O³⁷Cl. The centrifugal distortion constants were combined with vibrational wavenumbers from the literature to determine a valence harmonic force field which was used to calculate an average structure and an estimated equilibrium structure. Effective and full substitution structures have also been evaluated. FClCO: An extensive set of transitions, to high J and K has been measured for the two most abundant species, F³⁵CI¹²CO and F³⁷CI¹²CO, which allowed accurate values for the rotational constants, centrifugal distortion constants and the chlorine nuclear quadrupole coupling constants to be evaluated for each. An estimate of the three rotational constants for F³⁵CI¹³CO was made from the four transitions measured, as it exists in natural abundance. Harmonic force constants were produced from ab initio calculations and were used in the determination of its harmonic force field. Effective and average structural parameters have been determined. CF₂NCI: Rotational constants and quartic centrifugal distortion constants have been obtained for the two isotopic species CF₂N³⁵CI and CF₂N³⁷CI. The nuclear quadrupole coupling constants of both ¹⁴N and CI have been evaluated. A partial harmonic force field has been determined from the available data. Both effective and average structural parameters have been obtained and indicate that the structure of CF₂NCI is a hybrid of those of CF₂NF and CCl₂NCl. The nuclear quadrupole coupling constants have provided information about the bonding in the molecule. NH₂BH₂: Rotational constants and centrifugal distortion constants of the upper vibrational state 2v₈ have been determined and have confirmed the assignment of the band. The least squares refinement of the constants has shown an increasing poorness of fit to the higher K[sub a] transitions which has suggested the possiblity of Coriolis type perturbations.
Science, Faculty of
Chemistry, Department of
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Books on the topic "High resolution ultrasonic spectroscopy"

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Hollas, J. Michael. High resolution spectroscopy. 2nd ed. Chichester: J. Wiley, 1998.

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Goode, Ashley Harford. High resolution ultrasonic imaging system. Portsmouth: Portsmouth Polytechnic,School of Systems Engineering (Electrical), 1989.

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Quack, Martin, and Frédéric Merkt. Handbook of high-resolution spectroscopy. Hoboken, N.J: Wiley, 2011.

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Kaastra, Jelle, and Frits Paerels, eds. High-Resolution X-Ray Spectroscopy. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9884-2.

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Hüfner, Stefan, ed. Very High Resolution Photoelectron Spectroscopy. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/3-540-68133-7.

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Quack, Martin. Handbook of high-resolution spectroscopy. Hoboken, N.J: Wiley, 2011.

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Hirota, Eizi. High-resolution spectroscopy of transient molecules. New York: Springer-Verlag, 1985.

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1949-, Endō Y., ed. High-resolution spectroscopy of transient molecules. Berlin: Springer-Verlag, 1985.

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Cochrane, Emma Catherine Anne. High resolution laser spectroscopy of vanadium. Birmingham: University of Birmingham, 1998.

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Hirota, Eizi. High-Resolution Spectroscopy of Transient Molecules. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985.

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Book chapters on the topic "High resolution ultrasonic spectroscopy"

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Suri, B. M. "High-Resolution Spectroscopy." In Springer Proceedings in Physics, 223–51. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2000-8_11.

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Predehl, P. "High Resolution Spectroscopy." In The Universe in X-Rays, 73–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-34412-4_8.

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Herman, M., D. Hurtmans, and J. Vander Auwera. "High Resolution Infrared Spectroscopy." In Spectroscopy from Space, 201–18. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0832-7_13.

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Moyer, P. J., and M. A. Paesler. "High Resolution Optical Spectroscopy." In Progress in Precision Engineering, 384–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84494-2_73.

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Klepper, John R. "High Resolution Ultrasonic Tissue Characterization." In Acoustical Imaging, 757–60. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2523-9_89.

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Dinse, K. P., M. P. Winters, and J. L. Hall. "High Resolution Optical Multiplex Spectroscopy." In Laser Spectroscopy VIII, 388–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-540-47973-4_120.

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Zink, L. R., M. Prevedelli, K. M. Evenson, and M. Inguscio. "High Resolution Far Infrared Spectroscopy." In Applied Laser Spectroscopy, 141–48. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-1342-7_13.

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Chu, Steven. "High-Noise, Low-Resolution Spectroscopy." In Laser Physics at the Limits, 81–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04897-9_8.

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Christen, Dines. "Introduction to High-Resolution Spectroscopy." In Molecular Constants Mostly from Microwave, Molecular Beam, and Sub-Doppler Laser Spectroscopy, 1–5. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49199-7_1.

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Greene, T. P., A. T. Tokunaga, and J. S. Carr. "High Resolution Spectroscopy with CSHELL." In Infrared Astronomy with Arrays, 511–14. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1070-9_153.

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Conference papers on the topic "High resolution ultrasonic spectroscopy"

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Buckin, V., and M. Caras Altas. "C1.1 - High-resolution ultrasonic spectroscopy." In AMA Conferences 2017. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2017. http://dx.doi.org/10.5162/sensor2017/c1.1.

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Sharahi, Hossein J., Gajendra Shekhawat, Vinayak Dravid, Philip Egberts, and Seonghwan Kim. "Towards non-invasive high-resolution 3D nano-tomography by ultrasonic scanning probe microscopy." In International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2017, edited by Jaebum Choo and Seung-Han Park. SPIE, 2017. http://dx.doi.org/10.1117/12.2269817.

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Hilvert, Matthias, and Thomas Beuker. "High-Resolution EMAT as a Diagnostic Tool for Analysis of SCC and Crack-Like Pipelines Defects." In ASME 2015 India International Oil and Gas Pipeline Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/iogpc2015-7940.

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In succession of a research project, the Electro-Magnetic Acoustical Transducer (EMAT) technology could be utilized to generate ultrasound for crack detection in pipelines. The EMAT technology and smart In-Line Inspection (ILI) tools have been developed to an advanced tool kit for inspection. Today high-resolution EMAT ILI is a diagnostic tool, that provides rich information on pipeline cracking as also the type and condition of external pipeline coatings. A high number of EMAT sensors distributed and acting over the entire pipe circumference enable high-resolution mapping of the pipe wall. Ultrasonic shear-waves at different modes are generated and captured by the transducer arrangement. Acquisition of the ultrasonic reflection and transmission signal in frequency and time domain allows for spectroscopic imaging of the pipe wall. The preferred ultrasonic modes and their associated frequencies can be determined using the corresponding dispersion relation. This contribution shows how mode selective assessments of the captured ultrasonic spectra can be used for analysis of pipeline defects. Validation of EMAT ILI as an inspection process according to API 1163 is outlined. The established exceptionally high Probability Of Detection (POD) and Identification (POI) is derived from Level I, II and III process verification assessments. Latest developments of tailored EMAT sensor kits for ILI pipeline diagnostics are given.
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Lan, Jie, and Xiaochun Li. "Magnesium Matrix Nano-Composite Fabricated by Ultrasonic Dispersion of Nano-Sized SiC Particles in Molten Magnesium Alloy." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61408.

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The use of ultrasonic nonlinear effects to disperse nano-sized ceramic particles in molten metal has been studied and nanosized SiC particle reinforced AZ91D magnesium composites were fabricated. The microstructure of the composites was investigated by high resolution scanning electron microscopy (SEM), X-ray photo spectroscopy (XPS) and high resolution X-Ray Diffractometer(XRD) techniques. Experimental results show a nearly uniform distribution and good dispersion of the SiC nanoparticles within the magnesium matrix, although some of small agglomerates (less than 300nm) were found in matrix. The microhardness of composites have been improved significantly compared to that of pure AZ91D. The ultrasonic fabrication methodology is striking to rapidly produce a wide range of nano-sized particles reinforced metal matrix composites.
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Sheng, Xiong, Dongsheng Hou, and Jinyang Zheng. "Investigation on Acoustic Propagation of Ultrasound in Polyethylene Pipe Used in Nuclear Power Plant." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65578.

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Abstract:
Polyethylene (PE) pipe, particularly high-density polyethylene (HDPE) pipe, has been successfully utilized to transport cooling water for both non-safety-related applications and safety-related applications in nuclear power plant (NPP). However, concerns of a lack of non-destructive examination (NDE) procedures and qualifications specialized for HDPE pipe impede its broader application. Traditional approximation without considering effects of acoustic dispersion could work for PE pipe with a small inspection depth. But for PE pipe of large size used in nuclear power plant, effects of acoustic attenuation and dispersion accumulate with depth, and have influence on waveforms of target pules, which brings great challenges to the energy concentration when performing ultrasonic phased-array inspection for PE pipe in NPP. In this paper, a theoretical method applying Szabo’s causal convolutional propagation operator based on causality theory was presented to obtain wave equations of ultrasound in PE considering both attenuation and dispersion, in which attenuation coefficient and phase velocity were used to separately characterize acoustic attenuation and dispersion. Then, an experimental method using ultrasonic spectroscopy technology was proposed to confirm the proposed model, and a good agreement was obtained. The results indicated that attenuation coefficient of PE had an approximately linear relation with frequency and that phase velocity rose logarithmically with frequency. Finally, effects of attenuation and dispersion on amplitude spectrum and waveform in time domain of the target signal were investigated. Frequency downshift and time delay shift had an influence on image resolution and focus capability, and were believed to be a restriction of current inspection technology. This work also theoretically proved that lower testing frequencies (less than 2.5MHz) could improve the inspection effectiveness of the applied inspecting systems for HDPE pipes in NPP applications.
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Quirrenbach, Andreas. "Interferometric high-resolution spectroscopy." In SPIE Astronomical Telescopes + Instrumentation, edited by Wesley A. Traub. SPIE, 2004. http://dx.doi.org/10.1117/12.550794.

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Giubileo, G., I. Calderari, and A. Puiu. "High Resolution Spectroscopy of Sweeteners." In International Conference on Photonics, Optics and Laser Technology. SCITEPRESS - Science and and Technology Publications, 2015. http://dx.doi.org/10.5220/0005336600910095.

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Frey, Hans M., Paul Beaud, Tobias Lang, and Marcus Motzkus. "High Resolution Femtosecond CARS Spectroscopy." In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0009.

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Köhler, R., L. Mewissen, F. Poortmans, I. Van Parys, and H. Weigmann. "High resolution neutron resonance spectroscopy." In AIP Conference Proceedings Volume 124. AIP, 1985. http://dx.doi.org/10.1063/1.35001.

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Rozas, G., M. F. Pascual Winter, B. Jusserand, A. Fainstein, E. Semenova, A. Lemai^tre, R. Ouillon, P. Ranson, Marília Caldas, and Nelson Studart. "Ultra-high resolution Raman spectroscopy." In PHYSICS OF SEMICONDUCTORS: 29th International Conference on the Physics of Semiconductors. AIP, 2010. http://dx.doi.org/10.1063/1.3295350.

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Reports on the topic "High resolution ultrasonic spectroscopy"

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Grubor, Nenad M. High-resolution flurescence spectroscopy in immunoanalysis. Office of Scientific and Technical Information (OSTI), January 2005. http://dx.doi.org/10.2172/850039.

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Koffend, John B., John S. Holloway, Munson A. Kwok, III Heidner, and Raymond F. High-Resolution Absorption Spectroscopy of NO2. Fort Belvoir, VA: Defense Technical Information Center, August 1987. http://dx.doi.org/10.21236/ada184835.

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Friedrich, Stephen. Microcalorimetry for High-Resolution X-Ray Spectroscopy. Office of Scientific and Technical Information (OSTI), January 2017. http://dx.doi.org/10.2172/1342032.

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Faris, G., L. Jusinski, M. Dyer, W. Bischel, and A. Hickman. High-resolution Brillouin gain spectroscopy in solids. Office of Scientific and Technical Information (OSTI), December 1989. http://dx.doi.org/10.2172/6964303.

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Beck, C. A., and J. H. Campbell. Operation CASTLE. Project 18.3. High-Resolution Spectroscopy. Fort Belvoir, VA: Defense Technical Information Center, September 1985. http://dx.doi.org/10.21236/ada995367.

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Carr, John S. High-Resolution Infrared Spectroscopy of Protoplanetary Disks. Fort Belvoir, VA: Defense Technical Information Center, January 2005. http://dx.doi.org/10.21236/ada470393.

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Wojciech, Blachucki. High energy resolution off-resonant X-ray spectroscopy. Office of Scientific and Technical Information (OSTI), October 2015. http://dx.doi.org/10.2172/1238568.

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Kitsopoulos, T. N., I. M. Waller, J. G. Loeser, and D. M. Neumark. High Resolution Threshold Photodetachment Spectroscopy of Negative Ions. Fort Belvoir, VA: Defense Technical Information Center, May 1989. http://dx.doi.org/10.21236/ada208220.

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Madey, T. E. High Resolution Upgrade for Core-level Photoemission Spectroscopy. Office of Scientific and Technical Information (OSTI), August 1999. http://dx.doi.org/10.2172/833773.

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Ashoori, Raymond. Extremely High Resolution Spectroscopy of Oxide Electronic Systems. Fort Belvoir, VA: Defense Technical Information Center, January 2013. http://dx.doi.org/10.21236/ada584440.

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