Relevant bibliographies by topics / Absorption

Academic literature on the topic 'Absorption'

Author: Grafiati
Published: 4 June 2021
Last updated: 24 August 2024

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Journal articles on the topic "Absorption"

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Pulungan, Ainil Fithri, Effendy DLP., and Siti MS. "Simultaneous Spectrophotometric Determination of Paracetamol, Propyphenazone and Caffeine By Using Absorption Ratio Method." Asian Journal of Pharmaceutical Research and Development 6, no. 5 (October 18, 2018): 5–8. http://dx.doi.org/10.22270/ajprd.v6i5.412.

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The Absorption Ratio method involves measuring the absorbance at two wavelengths, namely the iso-absorptive point and the maximum wavelength. Its method could be an option in determining the level of a drug. The aim of this study was to determine whether the absorption ratio method can be used to determine the levels of paracetamol (PCT), propyphenazone (PRO) and caffeine (CAF) in tablet form. The absorption ratio method was used to determine the levels of the mixed drug compound without the separation stage and using the maximum wavelength and iso-absorptif point. The result of the study showed that the absorption ratio method used to solve multicomponent problems in tablet form can be performed and satisfy the validation requirements of the method according to international Conference on Harmonization Q2 (R1) (ICH) guidelines. The absorption ratio method was a simple and accurate to be used determine PCT, PRO, CAF in tablet form. Keywords : Paracetamol, propyphenazone, caffeine, absorption ratio
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Pongayi Ponnusamy Selvi and Rajoo Baskar, Pongayi Ponnusamy Selvi and Rajoo Baskar. "Mass Transfer Enhancement for CO2 Absorption in Structured Packed Absorption Column." Journal of the chemical society of pakistan 41, no. 5 (2019): 820. http://dx.doi.org/10.52568/000803/jcsp/41.05.2019.

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The acidic gas, Carbon dioxide (CO2) absorption in aqueous ammonia solvent was carried as an example for industrial gaseous treatment. The packed column was provided with a novel structured BX-DX packing material. The overall mass transfer coefficient was calculated from the absorption efficiency of the various runs. Due to the high solubility of CO2, mass transfer was shown to be mainly controlled by gas side transfer rates. The effects of different operating parameters on KGav including CO2 partial pressure, total gas flow rates, volume flow rate of aqueous ammonia solution, aqueous ammonia concentration, and reaction temperature were investigated. For a particular system and operating conditions structured packing provides higher mass transfer coefficient than that of commercial random packing.
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Kulish, M. R. "Influence of absorption saturation on the shape of CdSe absorption edge." Semiconductor Physics Quantum Electronics and Optoelectronics 17, no. 4 (November 10, 2014): 349–52. http://dx.doi.org/10.15407/spqeo17.04.349.

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Li, Ming Fu, Zhi Kai Zhuang, Jin Zhang, Gan Ran Deng, Wen Wei Lian, Jun Yan He, and Tao Huang. "Study on Undegummed Pineapple Leaf Fibers’ Moisture Absorptions." Advanced Materials Research 1048 (October 2014): 66–71. http://dx.doi.org/10.4028/www.scientific.net/amr.1048.66.

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Programmable constant-temperature/humidity test chamber owned by Natural Fiber Laboratory, Institute of Agricultural Machinery, Chinese Academy of Tropical Agricultural Sciences, is adopted to analyze undegummed pineapple fibers’ moisture absorptions. Study and analysis on moisture absorptions, moisture-absorption isothermsand moisture-absorption isohumes with constant temperature and inconstant humidities are carried out and the results show that fibers’moisture absorptions present roughly a regularity of such three stages as 0~20%, 20~80% and 80~100% (RH). In low-moisture stage, moisture absorption rates are higher; in middle-moisture stage, they level off; in high- moisture stage, moisture absorption rates are the highest. Fibers’moisture absorption amounts decrease along with temperature rise; but under the condition of high humidity, they increase along with temperature rise and also increase along with humidity rise. Study on undegummed pineapple fibers’moisture absorptions may provide theoretical basis for undegummed pineapple fiber preservation and textile processing in some special industries.
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Lampel, Johannes, Johannes Zielcke, Stefan Schmitt, Denis Pöhler, Udo Frieß, Ulrich Platt, and Thomas Wagner. "Detection of O<sub>4</sub> absorption around 328 and 419 nm in measured atmospheric absorption spectra." Atmospheric Chemistry and Physics 18, no. 3 (February 6, 2018): 1671–83. http://dx.doi.org/10.5194/acp-18-1671-2018.

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Abstract. Retrieving the column of an absorbing trace gas from spectral data requires that all absorbers in the corresponding wavelength range are sufficiently well known. This is especially important for the retrieval of weak absorbers, whose absorptions are often in the 10−4 range. Previous publications on the absorptions of the oxygen dimer O2–O2 (or short: O4) list absorption peaks at 328 and 419 nm, for which no spectrally resolved literature cross sections are available. As these absorptions potentially influence the spectral retrieval of various trace gases, such as HCHO, BrO, OClO and IO, their shape and magnitude need to be quantified. We assume that the shape of the absorption peaks at 328 and 419 nm can be approximated by their respective neighbouring absorption peaks. Using this approach we obtain estimates for the wavelength of the absorption and its magnitude. Using long-path differential optical absorption spectroscopy (LP-DOAS) observations and multi-axis DOAS (MAX-DOAS) observations, we estimate the peak absorption cross sections of O4 to be (1.96 ± 0.20) × 10−47 cm5 molec−2 and determine the wavelength of its maximum at 328.59 ± 0.15 nm. For the absorption at 419.13 ± 0.42 nm a peak O4 cross-section value is determined to be (5.0 ± 3.5) × 10−48 cm5 molec−2.
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Liu, Ji-Feng. "Theoretical reconsideration on the hydrogen bonding and coordination interactions of chlorophyll a in aqueous solution." Journal of Porphyrins and Phthalocyanines 15, no. 03 (March 2011): 202–10. http://dx.doi.org/10.1142/s1088424611003148.

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In the present work, explicit water molecule and solvent-field effects on the absorption spectrum of chlorophyll a have been studied using time-dependent density functional theory (TDDFT) method. Calculated results show that the one complex and two water coordinated complexes formed by concerted coordination and hydrogen-bonding interactions would be the most preferable conformations of chlorophyll a in aqueous surroundings. Moreover, four obvious absorption bands are assigned by comparing the theoretically simulated absorption spectra with the experimental ones. The theoretical study shows that the explicit water molecule interactions slightly influence the first absorption band. However, the water coordination and hydrogen-bonding interactions can significantly affect the second absorption band which has a strong red-shift. The solvent-field effect due to the polarity of water on absorptions in Q-bands is relatively smaller than that on absorptions in B-bands. As a consequence, our theoretical study on the absorption spectra in the 350–400 nm region presents that the absorption strength in this region was influenced by the explicit coordination and hydrogen bonding interactions from water molecules, significantly.
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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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Okoshi, Katsuya, Yosuke Minowa, Nobunari Kashikawa, Toru Misawa, Daichi Kashino, Hajime Sugai, Kazuya Matsubayashi, Atsushi Shimono, and Shinobu Ozaki. "Multiple Mg ii Absorption Systems in the Lines of Sight to Quadruply Lensed Quasar H1413+1143." Astronomical Journal 162, no. 5 (October 4, 2021): 175. http://dx.doi.org/10.3847/1538-3881/ac0bbb.

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Abstract We find multiple Mg ii absorption systems at redshift z = 1.66, 2.069, and 2.097 in the spatially resolved spectra of the quadruply gravitationally lensed quasar H1413+1143 utilizing the Kyoto tridimensional spectrograph ii (Kyoto 3D ii) spectrograph on board the Subaru telescope. Here we present the first measurement of differences in Mg ii absorption strength of the multiple intervening absorbers, which include ones identified as damped Lyα (DLA) absorption systems. Our detection of the significant Mg ii absorptions in the spatially resolved spectra reveals the inhomogeneous chemical enrichment on scales of about 12 kpc within the separation of the four sight lines. For the DLA system at z = 1.66, the rest equivalent widths (EWs) of the Mg ii absorption lines between the four spatially resolved lines of sight change by factors of up to ∼6, which trace the variations in the H i absorption strength. This suggests that inhomogeneous cold absorbers that give rise to the strong H i/Mg ii absorptions dwell on a scale of about 6–12 kpc between the four lines of sight. We also investigate the degree of variation in the EW of the absorption lines between the lines of sight. We find that the systems giving rise to strong absorptions in the spectra of the quadruply lensed quasars tend to have a high degree of variation in absorption strength between the lines of sight toward the lensed quasars.
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Kremkau, FW. "Molecular Absorption of Ultrasound in Biological Tissues." Physiology 4, no. 1 (February 1, 1989): 26–29. http://dx.doi.org/10.1152/physiologyonline.1989.4.1.26.

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Attenuation of ultrasound in tissues is due primarily to macromolecular absorption. Biomacromolecules have higher absorptions than the constituent molecules of which they are made. Absorption dependencies on structure and solvation are probably interrelated. Underlying absorption processes are enhanced or new processes are added under conditions of high concentration, aggregation, or cross-linking.
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Dissertations / Theses on the topic "Absorption"

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Morrow, Heather. "Shock absorption." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0016/MQ54662.pdf.

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Eriksson, Patrik. "Akustikavskärmning och absorption." Thesis, Gotland University, Institutionen för humaniora och samhällsvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hgo:diva-547.

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Det här är ett projekt i industriell design som gick ut på att lösa ett problem. Projektet var ett samarbete med kontors- och utbildningsmöbelföretaget Abstracta. Problemet var att det på arbetsplatser idag lätt blir högljutt och bullrigt, speciellt i öppna kontorslösningar. För att ta fram en produkt som löser problemet gjordes undersökningar och analyser av marknaden, kunden, användaren, akustik och material. Det utgjorde grunden för en idégenerering som resulterade i ett koncept, som sedan vidareutvecklades till en serie akustikabsorbenter. Absorbenternas utseende speglar en ljudvågs avtagande och formpressas i en blandning av lin och hampa. Materialet ger produkterna en klar hållbarhetsaspekt, vilket var något eftersträvades. Produktserien passar in och kompletterar Abstractas sortiment.

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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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Outram, Philip James. "QSO absorption systems." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624575.

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Currie, John S. "Absorption heat recovery." Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/13527.

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Industrial drying operations are highly energy intensive, usually utilising a primary energy source to provide the necessary heat for the production of a wide range of materials. The use of hot air as the heat and mass transfer medium leads to a resultant loss of energy through the venting of humid exhaust streams. An absorption heat transformer pilot plant was designed and constructed to investigate the potential of recovering this waste heat. Using a two stage cycle, simulated dryer exhaust streams were successfully dehumidified and reheated. The first stage of the transformer employed a direct contact process which used a concentrated absorbent solution, in this case aqueous lithium bromide solution, to reduce the humidity of the gas stream. This stage was followed by an indirect contact process using a novel absorption column to reheat the 'dry' gas. It was found that, based on initial water vapour partial pressures of around 0.2 bar, exit partial pressures as low as 0.04 bar were achievable. Temperature lifts of 50 - 70°C were possible in the reheat column, while the maximum exit gas temperature achieved was 160°C. In conjunction with the experimental studies, a computer simulation program was also written. Results of the model show that the absorption process was extremely rapid, occurring within the first 5 cm (6%) of the absorption column. A good comparison between the experimental and computer results was achieved. A preliminary design of an industrial heat transformer was also proposed following an industrial case study of a spray drying operation.
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Kaufman, Sarah K. "Moments of Absorption." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1133.

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Moments of Absorption explores the conceptual and visual themes that are presented in my MFA thesis exhibition. The research looks into the absorption of the nude subject, the gestures that communicate this absorption, and the domestic space as a stage for the presentation of these gestures. This work investigates a tension between the theatrical and the natural as represented by images.
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Kouneli, Athina. "CO2 absorption in power plants : Emphasizing on CO2 absorption in biphasic solvent." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-21842.

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Carbon dioxide, the famous and vital to life gas, is also an important greenhouse gas. Since the combustion of fuels leads to the production of carbon dioxide it had to be expected that since the industrial revolution the concentration of carbon dioxide in the atmosphere was to be rapidly increased. When the consequences and the causes of the greenhouse effect were understood, serious efforts were made by the global community to reduce the greenhouse gases production and CO2 among them. The Kyoto Protocol, an international agreement linked to the United Nations Framework Convention on Climate Change, commits State Parties, also EU among them, to reduce the greenhouse gases by setting internationally binding emission reduction targets. The first commitment period started in 2008 and ended in 2012 and had as goal an average 5% reduction of carbon dioxide and other greenhouse gases, whereas during the second commitment period (2013-2020) the parties committed to reduce greenhouse gas emissions at least 18% below the 1990 levels. Greenhouse gas emissions in the EU-28 in 2013 stood at 4611 million tones of CO2 and the fuel combustion and the fugitive emissions were responsible for the 57.2% of the carbon dioxide production. The electricity, gas, steam and air conditioning supply activities account for the 26.6% of the emissions. Therefore it can be easily understood that the power plants is an important sector in CO2 production and therefore their carbon dioxide emissions need to be reduced. Carbon capture and storage (CCS) process is one of the available solutions to reduce the greenhouse gases. With CCS it is possible to capture the CO2 waste from large point sources and to transport it and deposit to a storage site, usually to a geological formation. This way the carbon dioxide can be prevented from getting released into the atmosphere. Within the framework of this thesis only the capture process of this method is to be examined. More specifically this thesis project involves research over a mature technology for CO2 capture, able to be adapted at plants exhaust gases. This technology is carbon dioxide absorption. The research on CO2 absorption today appears to focus mostly on power plants gases as the gases production of power plants are increased in comparison to other plants. It is indicated that using the classic solvents - amines for the CO2 absorption system results to a significant amount of energy consumption for the solvents regeneration. The purpose of this thesis is to search over the biphasic solvents as an alternative option to amines for the CO2 capture system and state the pros and cons mainly from the energy aspect. It is expected that the biphasic solvents contribute to energy reduction of the system as the solvents are separated into two phases after the absorption, giving the capability to remove the water phase from the absorption column and as a result use less energy in the regeneration column.
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Wright, Cody LeForge. "Evaluation of Absorption and Post-Absorptive Metabolism of Inorganic and Organic Zinc Sources." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20010302-152709.

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A series of experiments was conducted to examine the absorption and post-absorptive metabolism of zinc (Zn) from inorganic and organic sources. Results of an in vivo experiment, using Holstein bull calves as models, suggested that, when Zn was supplemented at 20 mg Zn/kg DM for 98 d, Zn source had minimal impact on plasma or tissue Zn concentrations. However, when Zn was supplemented at 500 mg Zn/kg DM for 12 d, plasma and tissue Zn concentrations were greater in bulls that received Zn proteinate (ZnProt) than in those that received ZnSO and Ca only, uptake and transport of Zn from inorganic and organic Zn sources were similar. However, when added at high concentration in the presence of dietary antagonists, Zn uptake from organic sources appeared to be greater than from inorganic sources. Further research is certainly warranted to more clearly define differences in Zn absorption that may exist between inorganic and organic Zn sources at different dietary levels.

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Bohn, Torsten. "Magnesium absorption in humans /." [S.l.] : [s.n.], 2003. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=14930.

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Wirth, Adrian. "Attosecond transient absorption spectroscopy." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-140120.

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Books on the topic "Absorption"

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Hakemulder, Frank, Moniek M. Kuijpers, Ed S. Tan, Katalin Bálint, and Miruna M. Doicaru, eds. Narrative Absorption. Amsterdam: John Benjamins Publishing Company, 2017. http://dx.doi.org/10.1075/lal.27.

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Chattopadhyay, P. Absorption & stripping. New Delhi: Asian Books, 2007.

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Dragićević, Nina, and Howard Maibach. Percutaneous Absorption. 5th ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9780429202971.

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Kielhorn, J. Dermal absorption. Geneva: World Health Organization, 2006.

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Arnis, Kuksis, ed. Fat absorption. Boca Raton, Fla: CRC Press, 1986.

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Ehrhardt, Carsten, and Kwang-Jin Kim, eds. Drug Absorption Studies. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-74901-3.

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Wu, Wei, Xianting Li, and Tian You. Absorption Heating Technologies. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0470-9.

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Schellenberger, Moritz. Wissensemission und -absorption. Wiesbaden: Springer Fachmedien Wiesbaden, 2018. http://dx.doi.org/10.1007/978-3-658-22889-7.

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Schlünder, Ernst-Ulrich, and Franz Thurner. Destillation, Absorption, Extraktion. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-51460-9.

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Meylan, Georges, ed. QSO Absorption Lines. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-540-49458-4.

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Book chapters on the topic "Absorption"

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Feuerriegel, Uwe. "Absorption." In Verfahrenstechnik mit EXCEL, 155–78. Wiesbaden: Springer Fachmedien Wiesbaden, 2016. http://dx.doi.org/10.1007/978-3-658-02903-6_6.

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Dal Cin, Sonya, Michael P. Hall, and Daniel S. Lane. "Absorption." In Encyclopedia of Personality and Individual Differences, 7–9. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-24612-3_1117.

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Ebert, Volker, and Jürgen Wolfrum. "Absorption." In Heat and Mass Transfer, 231–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56443-7_13.

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Bateson, Malcolm C., and Ian A. D. Bouchier. "Absorption." In Clinical Investigations in Gastroenterology, 76–89. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5630-1_7.

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Nahler, Gerhard. "absorption." In Dictionary of Pharmaceutical Medicine, 1. Vienna: Springer Vienna, 2009. http://dx.doi.org/10.1007/978-3-211-89836-9_6.

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Scherrmann, Jean-Michel, Kim Wolff, Christine A. Franco, Marc N. Potenza, Tayfun Uzbay, Lisiane Bizarro, David C. S. Roberts, et al. "Absorption." In Encyclopedia of Psychopharmacology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-68706-1_1525.

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Schlünder, Ernst-Ulrich, and Franz Thurner. "Absorption." In Destillation, Absorption, Extraktion, 122–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-51460-9_3.

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Bateson, Malcolm C., and Ian A. D. Bouchier. "Absorption." In Clinical Investigations in Gastroenterology, 69–80. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53786-3_7.

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Lekner, John. "Absorption." In Theory of Reflection of Electromagnetic and Particle Waves, 155–78. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-015-7748-9_8.

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Böning, Dieter, Michael I. Lindinger, Damian M. Bailey, Istvan Berczi, Kameljit Kalsi, José González-Alonso, David J. Dyck, et al. "Absorption." In Encyclopedia of Exercise Medicine in Health and Disease, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_2001.

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Conference papers on the topic "Absorption"

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Bi, Xinhua, Cuiling Yu, Taibo Chen, and Xiaoyun Qi. "Absorptive Capacity: Enhancing the Absorption of Information Technology." In 2009 International Conference on Management and Service Science (MASS). IEEE, 2009. http://dx.doi.org/10.1109/icmss.2009.5300911.

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Matsui, Makoto, Kimiya Komurasaki, and Yoshihiro Arakawa. "Absorption Saturation in Laser Absorption Spectroscopy." In 24th AIAA Aerodynamic Measurement Technology and Ground Testing Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-2597.

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Lee, Dong S., and Kevin J. Malloy. "Reduced absorption mechanisms in semiconductor quantum wells." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.wb6.

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Ultrahigh refractive indices without absorption1 and reduced absorption2 have been predicted and observed for atomic systems. We apply these considerations to semiconductor structures with complicated energy bands and strong phonon interactions. Bulk semiconductors offer limited flexibility, while quantum well structures offer the ability to tailor the dielectric response through control of the conduction subband states and the separation between heavy and light hole states. To observe high indices without absorption, Raman pumping from the ground conduction state should result in a coherent state at the bottom of heavy hole and light hole bands. The high index then exists between the first excited conduction subband and the range of separation between the holes. Since this scheme gives a large refractive index change, we can observe results by photo- or electro-reflectance. However, interactions between subbands and the strong phonon scattering may inhibit the coherent state. To observe reduced absorption without changes of refractive index, two conduction subbands should be coupled by a CO2 laser. Reduced absorption should be observable from the bottom of the hole state to the range between the two dressed states of the conduction subbands. This approach is simpler than coherent pumping, and modulated transmission offers the best chance for observation.
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Kaye, Sophie R., Ethan D. Casavant, and Paul E. Slaboch. "Low Frequency Absorption of Additively Manufactured Cylinders." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11338.

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Abstract Attenuating low frequencies is often problematic, due to the large space required for common absorptive materials to mitigate such noise. However, natural hollow reeds are known to effectively attenuate low frequencies while occupying relatively little space compared to traditional absorptive materials. This paper discusses the effect of varied outer diameter, and outer spacing on the 200–1600 Hz acoustic absorption of additively manufactured arrays of hollow cylinders. Samples were tested in a 10 cm diameter normal incidence impedance tube such that cylinder length was oriented perpendicular to the incoming plane wave. By varying only one geometric element of each array, the absorption due to any particular parameter can be assessed individually. The tests confirmed the hypothesis that minimizing cylinder spacing and maximizing cylinder diameter resulted in increased overall absorption and produced more focused absorption peaks at specific low frequencies. Wider cylinder spacing produced a broader absorptive frequency range, despite shifting upward in frequency. Thus, manipulating these variables can specifically target absorption for low frequency noise that would otherwise disturb listeners.
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Weyer, H. J. "Pion absorption." In Intersections between particle and nuclear physics. AIP, 1992. http://dx.doi.org/10.1063/1.41615.

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McLean, Daniel G., Richard L. Sutherland, Joy E. Rogers, Jonathan E. Slagle, Mark C. Brant, and Paul A. Fleitz. "Interpretation of two photon absorption driven nonlinear absorption." In Optics & Photonics 2005, edited by A. Todd Yeates. SPIE, 2005. http://dx.doi.org/10.1117/12.618056.

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7

Carneiro, Mario Luis, Pedro Cardozo de Mello, and Eduardo Aoun Tannuri. "USP Active Absorption Basin: Absorption of Irregular Waves." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49750.

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The implementation of active absorption of irregular waves in USP Active Absorption Basin is described. The algorithm control is based on the method proposed by Scha¨ffer. A digital filter is applied as time realization of a frequency domain absorption transfer function using the measurement of surface elevation at each wavemaker as the hydrodynamic feedback. Motor dynamics and delay due to signals time travel were compensated to increase the absorption efficiency. Experiments with regular and irregular waves were carried out, where the results show a good agreement between predicted theoretical reflection coefficient and experimental values. Reflection coefficient smaller than 10% were obtained for waves in the frequency range of 0.4 to 1.1 Hz.
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Sun, Jiachen, Jun Chang, Qinduan Zhang, Peng Xu, and Zhifeng Zhang. "Absorption quantization in the diagnosis of absorption spectroscopy." In Conference on Optical Sensing and Imaging Technology, edited by Yadong Jiang, Qunbo Lv, Bin Xue, Dengwei Zhang, and Dong Liu. SPIE, 2021. http://dx.doi.org/10.1117/12.2599852.

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Wenzel, Hans. "Simulation of total absorption dual readout calorimetry." In Simulation of total absorption dual readout calorimetry. US DOE, 2010. http://dx.doi.org/10.2172/1767040.

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Wilson, Ryan N., Alexander Mikhaylov, Kristen M. Parzuchowski, Michael D. Mazurek, Charles H. Camp, Martin J. Stevens, and Ralph Jimenez. "Hot-Band Absorption Can Mimic Entangled Two-Photon Absorption." In CLEO: QELS_Fundamental Science. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.fm3b.7.

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While searching for entangled two-photon absorption in LDS798, we instead observe fluorescence signals originating from hot-band absorption. This process could lead to overestimating entangled two-photon absorption cross sections by several orders of magnitude.
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Reports on the topic "Absorption"

1

Ehrmann, Paul. 350nm Absorption Analysis. Office of Scientific and Technical Information (OSTI), October 2016. http://dx.doi.org/10.2172/1341970.

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Diachok, Orest. Bioacoustic Absorption Spectroscopy. Fort Belvoir, VA: Defense Technical Information Center, September 2001. http://dx.doi.org/10.21236/ada628210.

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Diachok, Orest. Bioacoustic Absorption Spectroscopy. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada630846.

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Batysta, F., and T. Galvin. Potting Material Absorption. Office of Scientific and Technical Information (OSTI), May 2021. http://dx.doi.org/10.2172/1835676.

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Diachok, Orest. Bioacoustic Absorption Spectroscopy (ASIAEX). Fort Belvoir, VA: Defense Technical Information Center, September 2000. http://dx.doi.org/10.21236/ada610200.

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6

Seiler, David G. Two-Photon Absorption Characterization. Fort Belvoir, VA: Defense Technical Information Center, July 1988. http://dx.doi.org/10.21236/ada198860.

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Eberle, b. Relic Neutrino Absorption Spectroscopy. Office of Scientific and Technical Information (OSTI), January 2004. http://dx.doi.org/10.2172/826638.

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Fiori, R. A. D. Detailed explanation of modelling absorption due to polar cap absorption and shortwave fadeout. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2020. http://dx.doi.org/10.4095/321793.

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Hsue, Sin-Tao, and M. Collins. Simulation of absorption edge densitometry. Office of Scientific and Technical Information (OSTI), November 1994. http://dx.doi.org/10.2172/10105949.

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Holden, N. E. Neutron scattering and absorption properties. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/10106551.

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