Academic literature on the topic 'Absorption spectra'

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Journal articles on the topic "Absorption spectra"

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Chen, J., and D. S. Venables. "A broadband optical cavity spectrometer for measuring weak near-ultraviolet absorption spectra of gases." Atmospheric Measurement Techniques Discussions 3, no. 5 (October 27, 2010): 4571–602. http://dx.doi.org/10.5194/amtd-3-4571-2010.

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Abstract. Accurate absorption spectra of gases in the near-ultraviolet (300 to 400 nm) are essential in atmospheric observations and laboratory studies. This paper describes a novel incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) instrument for measuring very weak absorption spectra from 335 to 375 nm. The instrument performance was validated against the 3B1−X1A1 transition of SO2. The measured absorption varied linearly with SO2 column density and the resulting spectrum agrees well with published spectra. Using the instrument, we report new absorption cross-sections of O3, acetone, 2-butanone, and 2-pentanone in this spectral region, where literature data diverge considerably. In the absorption minimum between the Huggins and Chappuis bands, our absorption spectra fall at the lower range of reported ozone absorption cross-sections. The spectra of the ketones agree with prior spectra at moderate absorptions, but differ significantly at the limits of other instruments' sensitivity. The collision-induced absorption of the O4 dimer at 360.5 nm was also measured and found to have a maximum cross-section of ca. 4.0 × 10−46 cm5 molecule−2. We demonstrate the application of the instrument to quantifying low concentrations of the short-lived radical, BrO, in the presence of stronger absorptions from Br2 and O3.
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Chen, J., and D. S. Venables. "A broadband optical cavity spectrometer for measuring weak near-ultraviolet absorption spectra of gases." Atmospheric Measurement Techniques 4, no. 3 (March 1, 2011): 425–36. http://dx.doi.org/10.5194/amt-4-425-2011.

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Abstract. Accurate absorption spectra of gases in the near–ultraviolet (300 to 400 nm) are essential in atmospheric observations and laboratory studies. This paper describes a novel incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) instrument for measuring very weak absorption spectra from 335 to 375 nm. The instrument performance was validated against the 3B1-X1A1 transition of SO2. The measured absorption varied linearly with SO2 column density and the resulting spectrum agrees well with published spectra. Using the instrument, we report new absorption cross-sections of O3, acetone, 2-butanone, and 2-pentanone in this spectral region, where literature data diverge considerably. In the absorption minimum between the Huggins and Chappuis bands, our absorption spectra fall at the lower range of reported ozone absorption cross-sections. The spectra of the ketones agree with prior spectra at moderate absorptions, but differ significantly at the limits of other instruments' sensitivity. The collision-induced absorption of the O4 dimer at 360.5 nm was also measured and found to have a maximum cross-section of ca. 4.0×10−46 cm5 molecule−2. We demonstrate the application of the instrument to quantifying low concentrations of the short-lived radical, BrO, in the presence of stronger absorptions from Br2 and O3.
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Hewitt, Paul. "Absorption Spectra." Physics Teacher 43, no. 2 (February 2005): 74. http://dx.doi.org/10.1119/1.1855739.

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Jensen, Peter Snoer, Jimmy Bak, and Stefan Andersson-Engels. "Influence of Temperature on Water and Aqueous Glucose Absorption Spectra in the Near- and Mid-Infrared Regions at Physiologically Relevant Temperatures." Applied Spectroscopy 57, no. 1 (January 2003): 28–36. http://dx.doi.org/10.1366/000370203321165179.

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Near- and mid-infrared absorption spectra of pure water and aqueous 1.0 g/dL glucose solutions in the wavenumber range 8000–950 cm−1 were measured in the temperature range 30–42 °C in steps of 2 °C. Measurements were carried out with an FT-IR spectrometer and a variable pathlength transmission cell controlled within 0.02 °C. Pathlengths of 50 μm and 0.4 mm were used in the mid- and near-infrared spectral region, respectively. Difference spectra were used to determine the effect of temperature on the water spectra quantitatively. These spectra were obtained by subtracting the 37 °C water spectrum from the spectra measured at other temperatures. The difference spectra reveal that the effect of temperature is highest in the vicinity of the strong absorption bands, with a number of isosbestic points with no temperature dependence and relatively flat plateaus in between. On the basis of these spectra, prospects for and limitations on data analysis for infrared diagnostic methods are discussed. As an example, the absorptive properties of glucose were studied in the same temperature range in order to determine the effect of temperature on the spectral shape of glucose. The change in water absorption associated with the addition of glucose has also been studied. An estimate of these effects is given and is related to the expected level of infrared signals from glucose in humans.
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Platonov, Alexej N., Klaus Langer, Andrzej Wieviöra, and Michael Andrut. "Electronic absorption spectra of chromium-bearing amesite." European Journal of Mineralogy 7, no. 4 (August 1, 1995): 961–66. http://dx.doi.org/10.1127/ejm/7/4/0961.

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Closca, V., C. B. Zelinschi, D. Babusca, and D. O. Dorohoi. "Solvent Empirical Scales for Electronic Absorption Spectra." Ukrainian Journal of Physics 59, no. 3 (March 2014): 226–32. http://dx.doi.org/10.15407/ujpe59.03.0226.

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Dotsenko, M. A. "ABSORPTION AND LUMINESCENCE PROPERTIES OF ACID AND SALT FORMS OF MONONUCLEOTIDES, THEIR COMPONENTS AND COMPLEXES WITH D-MANNITOL AT ROOM TEMPERATURE." Biotechnologia Acta 17, no. 2 (April 30, 2024): 36–37. http://dx.doi.org/10.15407/biotech17.02.036.

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Aim. The aim of this work was to analyze and compare spectral properties of aqueous nucleotide solutions in conditions close to biological systems. We studied the absorption and luminescence (Ex and Em fluorescence and Em phosphorescence) of monoribonucleotides, their disodium salts, bases and nucleosides, and mixes with D-mannitol dissolved in water at room temperature. Methods. There were measured absorbance spectra using a Specord 210plus instrument and fluorescence excitation and emission and phosphorescence spectra using Horiba Fluoro Max 4+ instruments. Results. There were obtained the absorption, excitation, and luminescence spectra of aqueous solutions 1 mg/ml of nucleotides, their components, and mixtures with mannitol (in ratio 1:4). We observed a change in the ratio between the peaks of the spectra of acidic and salt forms of nucleotides. Conclusions. The observations confirmed that nucleotides, nucleosides, and nucleic acid bases exhibit luminescence at room temperature, which might be useful information for further research in this area. In addition, a comparative analysis of the spectra showed possible interactions between nucleotide molecules and mannitol.
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Wagner, T., S. Beirle, T. Deutschmann, M. Grzegorski, and U. Platt. "Satellite monitoring of different vegetation types by differential optical absorption spectroscopy (DOAS) in the red spectral range." Atmospheric Chemistry and Physics 7, no. 1 (January 10, 2007): 69–79. http://dx.doi.org/10.5194/acp-7-69-2007.

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Abstract. A new method for the satellite remote sensing of different types of vegetation and ocean colour is presented. In contrast to existing algorithms relying on the strong change of the reflectivity in the red and near infrared spectral region, our method analyses weak narrow-band (few nm) reflectance structures (i.e. "fingerprint" structures) of vegetation in the red spectral range. It is based on differential optical absorption spectroscopy (DOAS), which is usually applied for the analysis of atmospheric trace gas absorptions. Since the spectra of atmospheric absorption and vegetation reflectance are simultaneously included in the analysis, the effects of atmospheric absorptions are automatically corrected (in contrast to other algorithms). The inclusion of the vegetation spectra also significantly improves the results of the trace gas retrieval. The global maps of the results illustrate the seasonal cycles of different vegetation types. In addition to the vegetation distribution on land, they also show patterns of biological activity in the oceans. Our results indicate that improved sets of vegetation spectra might lead to more accurate and more specific identification of vegetation type in the future.
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Wagner, T., S. Beirle, M. Grzegorski, and U. Platt. "Satellite monitoring of different vegetation types by differential optical absorption spectroscopy (DOAS) in the red spectral range." Atmospheric Chemistry and Physics Discussions 6, no. 4 (August 16, 2006): 7945–58. http://dx.doi.org/10.5194/acpd-6-7945-2006.

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Abstract. A new method for the satellite remote sensing of different types of vegetation and ocean colour is presented. In contrast to existing algorithms, our method analyses weak narrow-band reflectance structures (i.e. "fingerprint" structures) of vegetation in the red spectral range. It is based on differential optical absorption spectroscopy (DOAS), which is usually applied for the analysis of atmospheric trace gas absorptions. Since the spectra of atmospheric absorption and vegetation reflectance are simultaneously included in the analysis, the effects of atmospheric scattering and absorption are automatically corrected. The inclusion of the vegetation spectra also significantly improves the results of the trace gas retrieval. The global maps of the fitting coefficients for the vegetation spectra (indicating the fraction of the observed ground scene covered by vegetation) illustrate the seasonal cycle of different vegetation types. In addition to the vegetation distribution on land, they also show patterns of biological activity in the oceans. Our results indicate that improved sets of vegetation spectra might lead to more accurate and more specific identification of vegetation type in the future.
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Imanian, A., M. H. Tangestani, and A. Asadi. "INVESTIGATION OF SPECTRAL CHARACTERISTICS OF CARBONATE ROCKS – A CASE STUDY ON POSHT MOLEH MOUNT IN IRAN." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W18 (October 18, 2019): 553–57. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w18-553-2019.

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Abstract. Recent developments in the image processing approaches and the availability of multi and/or hyper spectral remote sensing data with high spectral, spatial and temporal resolutions have made remote sensing technique of great interest in investigations of geological sciences. One of the biggest advantage of the application of remote sensing in geology is recognizing the type of unknown rocks and minerals. In this study, an investigation on spectral features of carbonate rocks (i.e. calcite, dolomite, and dolomitized calcite) were done in terms of main absorptions, the reasons of those absorptions and comparison of these absorption with Johns Hopkins University (JHU) spectral library and laboratory spectra of Analytical Spectral Devices (ASD) instrument. For this purpose, we used the VNIR and SWIR bands of ASTER and OLI datasets. Finally, we applied the Spectral Analyst Algorithm in order to comparison between the obtained spectra from ASTER dataset and carbonate spectra of JHU spectral library.
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Dissertations / Theses on the topic "Absorption spectra"

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Falklöf, Olle, and Bo Durbeej. "Modeling of phytochrome absorption spectra." Linköpings universitet, Beräkningsfysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-92393.

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Phytochromes constitute one of the six well-characterized families of photosensory proteins in Nature. From the viewpoint of computational modeling, however, phytochromes have been the subject of much fewer studies than most other families of photosensory proteins, which is likely a consequence of relevant high-resolution structural data becoming available only in recent years. In this work, hybrid quantum mechanics/molecular mechanics (QM/MM) methods are used to calculate UV-vis absorption spectra of Deinococcus radiodurans bacteriophytochrome. We investigate how the choice of QM/MM methodology affects the resulting spectra and demonstrate that QM/MM methods can reproduce the experimental absorption maxima of both the Q and Soret bands with an accuracy of about 0.15 eV. Furthermore, we assess how the protein environment influences the intrinsic absorption of the bilin chromophore, with particular focus on the Q band underlying the primary photochemistry of phytochromes.
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Gallerani, Simona. "Reionization signatures in quasar absorption spectra." Doctoral thesis, SISSA, 2007. http://hdl.handle.net/20.500.11767/4273.

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One of the most refined qualities of the human mind concerns with its natural attitude in questioning itself about the reason of everything it gets in touch with. This is a cascade process which inevitably ends up in wondering how the Universe originated and evolved into terrestrial life. In the course of ages the best approach to satisfy the human thirst of knowledge has proved to be the “scientific method”, based on the precious interplay between “tangible” (observations) and “intelligible” (theory). Cosmology is a discipline which aims, through this method, at shedding light on all the phases of the evolution of the Universe. Up to now the available technology has allowed to open and only partially come through the gates of the comprehension of the Universe...
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Howard, John Brooks. "Double point contact single molecule absorption spectroscopy." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31648.

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Thesis (Ph.D)--Physics, Georgia Institute of Technology, 2010.
Committee Chair: Marchenkov, Alexei; Committee Member: Davidovic, Dragomir; Committee Member: Gole, James; Committee Member: Hunt, William; Committee Member: Reido, Elisa. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Webb, J. K. "QSO absorption lines." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234000.

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The absorption lines found in the spectra of distant quasars provide a unique method of probing the physical conditions in the universe at early epochs. This thesis describes a study of the Lyman alpha forest absorption systems seen in the spectra of high redshift QSOs. The Anglo-Australian Telescope has been used to obtain high resolution spectra of several bright QSOs. Considerable effort has gone into developing statistical techniques for profile fitting to the data to objectively and reliably extract the parameters associated with each absorbing cloud. The distribution functions for these are given and discussed. Particular attention has been paid to the clustering properties of the Lyman alpha clouds and it is found that they are weakly (but significantly) clustered on small velocity scales. Possible interpretations of this result are discussed. One especially interesting aspect of QSO absorption systems concerns the potential for measuring, or obtaining limits on, the deuterium to hydrogen abundance at high redshifts. A knowledge of this quantity is important for constraining cosmological models and can also help us to understand the chemical evolution of light elements in galaxies. A series of numerical simulations has been carried out to explore the potential for such measurements and an absorption system has been analysed to obtain an upper limit to D/H at z = 3.
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Furenlid, Lars Ragnar. "X-ray absorption studies of metal-imidazole complexes." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/30042.

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Darlison, A. G. "Multi-mode effects in Jahn-Teller absorption spectra." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370246.

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Eadon, D. G. "The visible absorption spectra of colloidal metal dispersions." Thesis, University of Kent, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382154.

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Johanson, Adam Kenneth. "HI absorption spectra toward MAGPIS supernova remnant candidates." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1468097.

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White, Katie Margaret. "Statistical analysis of visible absorption spectra and mass spectra obtained from dyed textile fibers." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4646.

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The National Academy of Sciences recently published a report which calls for improvements to the field of forensic science. Their report criticized many forensic disciplines for failure to establish rigorously-tested methods of comparison, and encouraged more research in these areas to establish limitations and assess error rates. This study applies chemometric and statistical methods to current and developing analytical techniques in fiber analysis. In addition to analysis of commercially available dyed textile fibers, two pairs of dyes are selected for custom fabric dyeing based on the similarities of their absorbance spectra and dye molecular structures. Visible absorption spectra for all fiber samples are collected using microspectrophotometry (MSP) and mass spectra are collected using electrospray ionization (ESI) mass spectrometry. Statistical calculations are performed using commercial software packages and software written in-house. Levels of Type I and Type II error are examined for fiber discrimination based on hypothesis testing of visible absorbance spectra profiles using a nonparametric permutation method. This work also explores evaluation of known and questioned fiber populations based on an assessment of statistical p-value distributions from questioned-known fiber comparisons with those of known fiber self-comparisons. Results from the hypothesis testing are compared with principal components analysis (PCA) and discriminant analysis (DA) of visible absorption spectra, as well as PCA and DA of ESI mass spectra. The sensitivity of a statistical approach will also be discussed in terms of how instrumental parameters and sampling methods may influence error rates.
ID: 030423335; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Thesis (M.S.)--University of Central Florida, 2010.; Includes bibliographical references (p. 112-119).
M.S.
Masters
Department of Chemistry
Sciences
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Wishnow, Edward Hyman. "Far-infrared absorption by liquid nitrogen and liquid oxygen." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25072.

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This thesis examines the collision induced, far-infrared absorption of homonuclear diatomic molecules. These molecular processes are relevant in the astrophysical environments of planetary atmospheres and galactic molecular clouds, and a brief survey of far-infrared measurements of these regions is presented. The theory of collision induced absorption by molecular rotational transitions is reviewed and a calculation is made of the quadrupolar induced, single rotational transition absorption line intensities of the nitrogen and oxygen molecules. The far-infrared absorption spectra of liquid nitrogen and liquid oxygen at 77K, over the frequency range 5 to 70 cm⁻¹ , have been measured. The far-infrared spectrum of liquid oxygen has not previously been reported. The present work includes the design of a low temperature, multiple pass, far-infrared absorption cell intended for low temperature, low density gas measurements. The effect of diffraction on the cell's maximum attainable optical path length, and a model used to estimate the anticipated liquid helium consumption are discussed.
Science, Faculty of
Physics and Astronomy, Department of
Graduate
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Books on the topic "Absorption spectra"

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Shida, Tadamasa. Electronic absorption spectra of radical ions. Amsterdam: Elsevier, 1988.

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Park, J. H. Atlas of absorption lines from 1 to 17900 cm-1. Hampton, Va: Langley Research Center, 1987.

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C, Burgess, Frost T, and Ultraviolet Spectrometry Group (Great Britain), eds. Standards and best practice in absorption spectrometry. Oxford: Blackwell Science, 1999.

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K, Frank, Kessler M, and Workshop on Quantitative Spectroscopy in Tissue (1988 : Erlangen, Germany), eds. Quantitative spectroscopy in tissue. Frankfurt am Main: PMI Verlagsgruppe, 1992.

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Gillbricht, Max. UV-Absorption des Seewassers in der Helgoländer Region. Hamburg: Verlag Dr. Kovač, 2001.

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Ćirković, Milan M. QSO absorption spectroscopy and baryonic dark matter. Belgrad: Astronomical Observatory, 2005.

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Klintenberg, Mattias. Rare-earth polarized absorption spectra as a structural tool. Uppsala: Acta Universitatis Upsaliensis, 1997.

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Q, Ma, and United States. National Aeronautics and Space Administration., eds. Calculation of far wings of allowed spectra: The water continuum. [Washington, DC: National Aeronautics and Space Administration, 1995.

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United States. National Aeronautics and Space Administration., ed. The frequency and distribution of high-velocity gas in the galaxy: Final report. [Washington, DC: National Aeronautics and Space Administration, 1995.

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Columbia Astrophysics Laboratory (Columbia University) and United States. National Aeronautics and Space Administration., eds. Strong associated C IV absorption in low redshift quasars. [Washington, D.C.?]: National Aeronautics and Space Administration, Astrophysics Data Program, 1989.

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Book chapters on the topic "Absorption spectra"

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Agarwal, Bipin K. "Absorption Spectra." In Springer Series in Optical Sciences, 237–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-540-38668-1_7.

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Stenholm, Stig. "Absorption and Gain Spectra." In Springer Handbook of Atomic, Molecular, and Optical Physics, 1009–21. New York, NY: Springer New York, 2006. http://dx.doi.org/10.1007/978-0-387-26308-3_69.

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Karazija, Romas. "X-Ray Absorption Spectra." In Introduction to the Theory of X-Ray and Electronic Spectra of Free Atoms, 155–77. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4899-1534-4_5.

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Zijlstra, Willem G., Anneke Buursma, and Onno W. van Assendelft. "Determination of Absorption Spectra." In Visible and Near Infrared Absorption Spectra of Human and Animal Haemoglobin, 47–53. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429071096-7.

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Doroshkevich, Andrei G., and Victor I. Turchaninov. "QSO Spectra and the Evolution of Structure." In QSO Absorption Lines, 371–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-540-49458-4_79.

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Al-Awadhi, Safaa, and Mustafa Al-Shemali. "Spectro Absorption." In Atlas of Fallen Dust in Kuwait, 206–46. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66977-5_9.

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Abstract Ultraviolet–visible UV-VIS. Varian Bio Cary 100 UV–VIS instrument was used for measuring the spectrum of dust samples. The certified materials according to Lab sphere SRS. 99–020 were used and the dust samples were placed in a cuvette (10 mm) and placed on the diffuse reflectance accessory. Measurement was done with respect to the reference. The UV–VIS spectra cover the regions from 900 to 190 nm which includes the near-infrared region, visible light regions, and ultraviolet regions. The FT-IR data shows the different chemical content of dust in the scanning of what possible compounds can be found in dust particles for required further analysis. The dust absorption of the light spectrum in Kuwait was revealed in maps according to seasons showing higher and lower concentrations of light absorption of ultraviolet, violet, blue, cyan, green, yellow, orange, red, infrared.
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Carballo, Ruth, Xavier Barcons, and John K. Webb. "The Absorption Spectra of Q1107+487 and Q1442+295." In QSO Absorption Lines, 327–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-540-49458-4_64.

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Pajot, Bernard. "EM Acceptor Spectra." In Optical Absorption of Impurities and Defects in SemiconductingCrystals, 281–345. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/b135694_7.

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Krełowski, Jacek. "Absorption Spectra of HI Clouds." In The Cosmic Dust Connection, 117–32. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-5652-3_6.

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Bailey, Margaret L. "Ultraviolet and Visible Absorption Spectra." In Chemistry of Heterocyclic Compounds: A Series Of Monographs, 631–64. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470186596.ch11.

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Conference papers on the topic "Absorption spectra"

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Ustuzhanin, N. M. "Absorption spectra of medicines." In SPIE Proceedings, edited by Leonid N. Sinitsa and Semen N. Mikhailenko. SPIE, 2004. http://dx.doi.org/10.1117/12.545743.

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Walkup, Robert E. "Femtosecond time-resolved absorption spectroscopy." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.thdd1.

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Femtosecond time-resolved absorption spectroscopy is discussed in terms of a simple model in which the collision complex is regarded as a time- dependent dipole oscillator. This model is applied to recent measurements of the absorption spectra molecules in the process of dissociating. When the dissociation process yields a narrow wave packet, the dominant feature in the absorption spectra is generally a sharp feature at the transition frequency for separated atoms. The spectrum in this impact region reflects an effective phase- shift for a partial collision which begins at the time of excitation by the probe pulse. By inspection of the data, one can directly see when the atoms have reached the Weisskopf radius, the point where the partial collision provides a phase- shift of 1 radian. Moreover, by measuring the phase-shift as a function of pump-probe delay, one can recover the molecular transition frequency along the path of dissociation. For broad wave packets, there can be a large phase-shift spread, and the spectra approach a statistical limit, in which the absorption profile directly reflects the distribution of molecular transition frequencies at the time of excitation by the probe pulse. Measurements of the spectral power density of the transmitted probe pulse, are compared and contrasted with measurements based on laser-induced fluorescence.
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Kozub, John A., Bibo Feng, and William E. Gabella. "Mid-infrared FEL absorption spectra." In High-Power Lasers and Applications, edited by Glenn S. Edwards, Joseph Neev, Andreas Ostendorf, and John C. Sutherland. SPIE, 2002. http://dx.doi.org/10.1117/12.461376.

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Krivolapchuk, Vladimir V., Margarita M. Mezdrogina, S. D. Raevskii, Alexander P. Skvortsov, and Sh A. Yusupova. "Absorption spectra of GaN:Er3+crystals." In XI Feofilov Symposium on Spectropscopy of Crystals Activated by Rare-Earth and Transition Metal Ions, edited by Alexander A. Kaplyanskii, Boris Z. Malkin, and Sergey I. Nikitin. SPIE, 2002. http://dx.doi.org/10.1117/12.475320.

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Uttenthaler, Stefan, Klaus M. Pontoppidan, Andreas Seifahrt, Sarah Kendrew, Joris A. D. L. Blommaert, Eric J. Pantin, Bernhard R. Brandl, et al. "Correcting METIS spectra for telluric absorption to maximize spectral fidelity." In SPIE Astronomical Telescopes + Instrumentation, edited by Ian S. McLean, Suzanne K. Ramsay, and Hideki Takami. SPIE, 2010. http://dx.doi.org/10.1117/12.856697.

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Naumenko, O. V., Alexander D. Bykov, Leonid N. Sinitsa, Brenda P. Winnewisser, Manfred Winnewisser, P. S. Ormsby, and K. Narahari Rao. "Absorption spectra of deuterated water vapor." In High Resolution Molecular Spectroscopy: 11th Symposium and School, edited by Alexander I. Nadezhdinskii, Yu V. Ponomarev, and Leonid N. Sinitsa. SPIE, 1994. http://dx.doi.org/10.1117/12.166215.

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Gala, Fabrizio, and Giuseppe Zollo. "Light absorption spectra in oligothiophene molecules." In NANOINNOVATION 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4997130.

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Aguirre-Gomez, R., Alison R. Weeks, and Simon R. Boxall. "Absorption spectra reconstruction using Voigt profiles." In Ocean Optics XIII, edited by Steven G. Ackleson and Robert J. Frouin. SPIE, 1997. http://dx.doi.org/10.1117/12.266466.

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Mackay, Peter E., and Gian-Luca Oppo. "Absorption and emission spectra of trappedions." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/oam.1993.wr.9.

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Ballard, J., and D. A. Newnham. "Absorption spectra of cold vapours using FTS and collision cooling." In Fourier Transform Spectroscopy. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/fts.1995.ffa3.

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Abstract:
Spectra of polyatomic molecules, which are often very complex with many hot bands at room temperature , are significantly simplified if the sample can be cooled. The simplification aids analysis of the spectra in terms of rotational constants. Similarly spectral parameters such as line broadening coefficients, are needed to be known at cold temperatures for correct interpretation of many atmospheric measurements. However many polyatomic molecules also condense readily on cooling, so gas phase spectroscopy using conventional absorption cells at low temperatures is difficult, if not impossible due to the large negative temperature coefficient of SVP.
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Reports on the topic "Absorption spectra"

1

Pavlopoulos, T. G. Triplet-Triplet Absorption and Polarization Spectra of Anthracene. Fort Belvoir, VA: Defense Technical Information Center, May 1991. http://dx.doi.org/10.21236/ada235895.

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2

Weger, H. T., and D. Reed. Absorption spectra and speciation of plutonium(VI) with phosphate. Office of Scientific and Technical Information (OSTI), February 1996. http://dx.doi.org/10.2172/188547.

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3

Lawson, Del R., Daniel L. Feldheim, Colby A. Foss, Peter K. Dorhout, C. M. Elliott, Charles R. Martin, and Bruce A. Parkinson. Near-IR Absorption Spectra for the C70 Fullerene Anions. Fort Belvoir, VA: Defense Technical Information Center, July 1992. http://dx.doi.org/10.21236/ada253658.

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Knickelbein, M. B. Particle-like absorption spectra in small transition metal clusters. Office of Scientific and Technical Information (OSTI), February 1995. http://dx.doi.org/10.2172/10120654.

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Reber, Christian, Lawrence Yee, John McKiernan, Jeffrey L. Zink, and R. S. Williams. Luminescence and Absorption Spectra of C sub 60 Films. Fort Belvoir, VA: Defense Technical Information Center, February 1991. http://dx.doi.org/10.21236/ada232153.

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Shokair, I. R. Orthogonal spectra and cross sections: Application to optimization of multi-spectral absorption and fluorescence lidar. Office of Scientific and Technical Information (OSTI), September 1997. http://dx.doi.org/10.2172/653931.

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Huang, L., S. G. Lambrakos, N. Bernstein, A. Shabaev, and L. Massa. Absorption Spectra of Water Clusters Calculated Using Density Functional Theory. Fort Belvoir, VA: Defense Technical Information Center, July 2013. http://dx.doi.org/10.21236/ada587440.

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Mansour, A. N., and C. A. Melendres. X-Ray Absorption Spectra and Structure of Some Nickel Oxides (Hydroxides). Fort Belvoir, VA: Defense Technical Information Center, June 1994. http://dx.doi.org/10.21236/ada281305.

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Tam, Simon, Mario E. Fajardo, Hiroyuki Katsuki, Hiromichi Hoshina, and Takamasa Momose. High Resolution Infrared Absorption Spectra of Methane Molecules Isolated in Solid Parahydrogen Matrices. Fort Belvoir, VA: Defense Technical Information Center, May 1999. http://dx.doi.org/10.21236/ada408708.

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Lawson, Del R., Daniel L. Feldheim, Colby A. Foss, Peter K. Dorhoug, and C. M. Elliott. Near-IR Absorption Spectra for the Buckminsterfullerene Anions: An Experimental and Theoretical Study. Fort Belvoir, VA: Defense Technical Information Center, May 1992. http://dx.doi.org/10.21236/ada250532.

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