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Relevant bibliographies by topics / Mole fractions

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Academic literature on the topic 'Mole fractions'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Mole fractions"

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BHOLE, M. P., E. P. SAMUEL, and D. S. PATIL. "NUMERICAL SIMULATION OF OPTICAL CONFINEMENT IN ZnO BASED HETEROSTRUCTURES AT 375-NANOMETER WAVELENGTH." International Journal of Modern Physics B 22, no. 12 (2008): 1985–95. http://dx.doi.org/10.1142/s0217979208039241.

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Numerical simulation of optical confinement in simple double heterostructure of ZnO / Mg x Zn 1-x O and hybrid double heterostructure of Al x Ga 1-x N/ZnO have been carried out at 375 nanometer wavelength using MATLAB. Field distribution along the junction plane has been studied as a function of mole fractions of Mg and Al for different thickness of active layers. The spread of field has been estimated as a function of mole fractions and articulated as Full Width at Half Maximum (FWHM). It was found to be decreasing nonlinearly with increase of Mg mole fraction in simple heterostructure and in

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Yeh, Chun-Lang. "Numerical study of the burner parameters on the thermal field in a sulfur recovery unit thermal reactor." MATEC Web of Conferences 169 (2018): 01013. http://dx.doi.org/10.1051/matecconf/201816901013.

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A sulfur recovery unit (SRU) thermal reactor is the most important equipment in a sulfur plant and is negatively affected by high temperature operations. In this paper, the effect of burner parameters, including the clearance of the acid gas tip and the inlet air swirler angle, on the thermal field in a SRU thermal reactor are investigated numerically, with the aim to reduce the high temperature inside the thermal reactor and to ensure an acceptable sulfur recovery. The simulation results show that the burner with a smaller clearance of the acid gas tip produces a lower temperature, a lower ex

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Ebinger, M. H., and D. G. Schulze. "The influence of pH on the synthesis of mixed Fe-Mn oxide minerals." Clay Minerals 25, no. 4 (1990): 507–18. http://dx.doi.org/10.1180/claymin.1990.025.4.09.

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AbstractMn-substituted iron oxides were synthesized at pH 4, 6, 8, and 10 from Fe-Mn systems with Mn mole fractions (Mn/(Mn + Fe)) of 0, 0·2, 0·4, 0·6, 0·8, and 1·0, and kept at 50°C for 40 days. The Mn mole fraction in goethite was <0·07 at pH 4 but increased to ∼0.47 at pH 6. Goethite and/or hematite formed in Fe and Fe + Mn syntheses at pH 4 and pH 6 at Mn mole fractions ≤0·8, and at Mn mole fractions ≤0·2 at pH 8 and pH 10. Hausmannite and jacobsite formed at pH 8 and pH 10 at Mn mole fractions ≥0·4. In the pure Mn syntheses, manganite (γ-MnOOH) formed at pH 4 and pH 6, whereas hausmann

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Vogt, J. A., A. J. Fischman, M. Kempf, Y. M. Yu, R. G. Tompkins, and J. F. Burke. "A general model for analysis of the tricarboxylic acid cycle with use of [13C]glutamate isotopomer measurements." American Journal of Physiology-Endocrinology and Metabolism 266, no. 6 (1994): E1012—E1022. http://dx.doi.org/10.1152/ajpendo.1994.266.6.e1012.

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A generalized steady-state model was developed for determining tricarboxylic acid cycle fractional fluxes from 13C nuclear magnetic resonance (NMR) data. The model relates the measured mole fractions of [13C]glutamate isotopomers to the fractional fluxes and predicted mole fractions of isotopomers of oxaloacetate (OAA) and acetyl-CoA. This model includes cycling between OAA and fumarate. Fractional fluxes are determined by fitting the model equations to NMR parameters by use of nonlinear least squares. Although only fractional fluxes can be determined from 13C-NMR data, when they are combined

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Nomura, Shohei, Manish Naja, M. Kawser Ahmed, et al. "Measurement report: Regional characteristics of seasonal and long-term variations in greenhouse gases at Nainital, India, and Comilla, Bangladesh." Atmospheric Chemistry and Physics 21, no. 21 (2021): 16427–52. http://dx.doi.org/10.5194/acp-21-16427-2021.

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Abstract. Emissions of greenhouse gases (GHGs) from the Indian subcontinent have increased during the last 20 years along with rapid economic growth; however, there remains a paucity of GHG measurements for policy-relevant research. In northern India and Bangladesh, agricultural activities are considered to play an important role in GHG concentrations in the atmosphere. We performed weekly air sampling at Nainital (NTL) in northern India and Comilla (CLA) in Bangladesh from 2006 and 2012, respectively. Air samples were analyzed for dry-air gas mole fractions of CO2, CH4, CO, H2, N2O, and SF6 a

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Bozorova, D. T., Sh P. Gofurov, A. M. Kokhkharov, and O. B. Ismailova. "STUDY OF HETEROMOLECULAR INTERACTION OF NONAQUEOUS BINARY SOLUTIONS." «Узбекский физический журнал» 22, no. 2 (2020): 111–14. http://dx.doi.org/10.52304/.v22i2.187.

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In this work, the refractometry method was used to study of the molecular interactions and structural characteristics of dimethylformamide-ethanol and cyclohexane-ethanol binary mixtures. The refractive indices of mixtures were measured over a wide range of dimethylformamide and cyclohexane concentrations (0−1.0 mole fractions) at 25°С. It has been shown that heteromolecular complexes in binary solutions are formed at the concentration of ∼0.5 mole fraction of those compounds due to strong H-bonds. Relatively weak interactions are determined at a concentration of ∼0.2 and ∼0.9 mole fraction of

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D., S. Bhuvaneshwari, John B., Pandeeswaran M., and P. Elango K. "Contrasting solvent effects on the kinetics of oxidation of methionine by quinolinium fluorochromate." Journal of Indian Chemical Society Vol. 82, Jul 2005 (2005): 616–19. https://doi.org/10.5281/zenodo.5830410.

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Department of Chemistry, Gandhigram Rural Institute (Deemed University), Gandhigram-624 302, India <em>E-mail </em>: drkpelango@rediffmail.com                           <em>Fax :</em> 91-451-2454466 <em>Manuscript received 30 December 2004. accepted 9 March 2005</em> The oxidation of methionine by quinolinium fluorochromate (QFC) has been studied, in the presence of chloroacetic acid, in water-DMSO and water-acetic acid mixtures of varying mole fractions. The reaction is first order each with respect to methionine, QFC and a

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Chuquin-Vasco, Daniel, Dennise Chicaiza-Sagal, Cristina Calderón-Tapia, Nelson Chuquin-Vasco, Juan Chuquin-Vasco, and Lidia Castro-Cepeda. "Forecasting mixture composition in the extractive distillation of n-hexane and ethyl acetate with n-methyl-2-pyrrolidone through ANN for a preliminary energy assessment." AIMS Energy 12, no. 2 (2024): 439–63. http://dx.doi.org/10.3934/energy.2024020.

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<abstract> <p>We developed an artificial neural network (ANN) to predict mole fractions in the extractive distillation of an n-hexane and ethyl acetate mixture, which are common organic solvents in chemical and pharmaceutical manufacturing. The ANN was trained on 250 data pairs from simulations in DWSIM software. The training dataset consisted of four inputs: Feed flow inlet (T1-F), Feed Stream Mass Flow temperature pressure (FM1-F), Make-up stream mass flow (FM2-MU), and ERC tower reflux ratio (RR-ERC). The ANN demonstrated the ability to forecast four output variables (neurons):

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You, Yuan, Brendan Byrne, Orfeo Colebatch, Richard L. Mittermeier, Felix Vogel, and Kimberly Strong. "Quantifying the Impact of the COVID-19 Pandemic Restrictions on CO, CO2, and CH4 in Downtown Toronto Using Open-Path Fourier Transform Spectroscopy." Atmosphere 12, no. 7 (2021): 848. http://dx.doi.org/10.3390/atmos12070848.

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During the global COVID-19 pandemic, anthropogenic emissions of air pollutants and greenhouse gases (GHGs), especially traffic emissions in urban areas, have declined. Long-term measurements of trace gas concentrations in urban areas can be used to quantify the impact of emission reductions on GHG mole fractions. Open-path Fourier transform infrared (OP-FTIR) spectroscopy is a non-intrusive technique that can be used to simultaneously measure multiple atmospheric trace gases in the boundary layer. This study investigates the reduction of mole fractions and mole fraction enhancements above back

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Knepp, T. N., T. L. Renkens, and P. B. Shepson. "Gas phase acetic acid and its qualitative effects on snow crystal morphology and the quasi-liquid layer." Atmospheric Chemistry and Physics 9, no. 20 (2009): 7679–90. http://dx.doi.org/10.5194/acp-9-7679-2009.

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Abstract. A chamber was constructed within which snow crystals were grown on a string at various temperatures, relative humidities, and acetic acid gas phase mole fractions. The temperature, relative humidity, and acid mole fraction were measured for the first time at the point of crystal growth. Snow crystal morphological transition temperature shifts were recorded as a function of acid mole fraction, and interpreted according to the calculated acid concentration in the crystal's quasi-liquid layer, which is believed to have increased in thickness as a function of acid mole fraction, thereby

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Dissertations / Theses on the topic "Mole fractions"

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Reum, Friedemann [Verfasser], and Martin [Akademischer Betreuer] Claußen. "Methane emissions from the East Siberian Arctic Shelf inferred from accurate observations of atmospheric methane mole fractions / Friedemann Reum ; Betreuer: Martin Claußen." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2019. http://d-nb.info/1194547958/34.

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Reum, Friedemann Verfasser], and Martin [Akademischer Betreuer] [Claussen. "Methane emissions from the East Siberian Arctic Shelf inferred from accurate observations of atmospheric methane mole fractions / Friedemann Reum ; Betreuer: Martin Claußen." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2019. http://nbn-resolving.de/urn:nbn:de:gbv:18-99507.

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Leimkuhler, Matthew Pancoast. "Linear stability analysis of circular jets : integer, fractional, and multiple mode excitation /." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06082009-170937/.

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Rolfe, Terry Clinton. "Measurements of N2O and SF6 Mole Fraction and N2O Isotopic Composition between 1978 and 1997 in Archived Air Samples from Cape Meares, Oregon." PDXScholar, 2019. https://pdxscholar.library.pdx.edu/open_access_etds/5124.

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Nitrous oxide (N2O) is the third most important greenhouse gas (GHG) behind carbon dioxide (CO2) and methane (CH4). Sulfur hexafluoride (SF6) does not add significantly to climate forcing by itself due to the low concentration in the atmosphere; however, it is one of the most powerful GHG known. Measurements of atmospheric N2O made prior to mid-1990 have larger uncertainties than later periods due to advancements made in gas chromatography (GC) methods. Few atmospheric SF6 measurements pre-1990 exist, especially in the northern hemisphere. Archived samples may be analyzed using updated measure

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Ramalingam, Ajoy [Verfasser], Karl Alexander [Akademischer Betreuer] Heufer, and Henry [Akademischer Betreuer] Curran. "Kinetic investigations of gaseous fuels through ignition delay time and species mole fraction measurements at high pressures / Ajoy Ramalingam ; Karl Alexander Heufer, Henry Curran." Aachen : Universitätsbibliothek der RWTH Aachen, 2021. http://d-nb.info/1240904630/34.

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Naudin, Sabine. "Le rôle de la consommation d’alcool et du mode de vie sur le risque de cancer du pancréas dans l’étude EPIC." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1133/document.

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Souvent diagnostiqué à un stade avancé, le cancer du pancréas (CP) est un cancer particulièrement létal pour lequel il n’y a, à ce jour, que très peu de possibilités de traitement et de diagnostic anticipé. L’identification de facteurs de risque modifiables pourrait fournir des données épidémiologiques nécessaires au soutien de la mise en place de mesures préventives. Cette thèse a pour but d’étudier l’étiologie du CP en évaluant le rôle de la consommation d’alcool et du mode de vie dans l’étude prospective européenne sur le cancer et la nutrition (EPIC), cohorte multicentrique de plus de 500,

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Lai, Xiongliang. "Design and Analysis of a Dual-Mode Cascaded-Loop Frequency Synthesizer." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/2187.

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A new architecture for a frequency synthesizer with adjustable output frequency range and channel spacing is introduced. It is intended for the generation of closely spaced frequency channels in the GHz range while producing minimal spurious phase noise components. The architecture employs two independent phase-locked loops that are driven in cascade by a single reference oscillator. The approach provides fine resolution and wide bandwidth as well as low phase noise and should find application in many contemporary communication systems. The synthesizer can be operated in either of two differen

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Pileyre, Baptiste. "Etude préclinique évaluant l'utilisation de la fraction vasculaire stromale et les cellules souches dérivées de tissu adipeux dans le traitement des myosites." Electronic Thesis or Diss., Normandie, 2023. http://www.theses.fr/2023NORMR054.

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Les myosites représentent un ensemble de maladies musculaires auto-immunes touchant les muscles squelettiques et conduisant à des atteintes graves. Si la plupart des patients répondent aux traitements conventionnels, certains restent réfractaires. La fraction vasculaire stromale (FVS), fraichement extraite du tissu adipeux, ou les cellules souches en dérivant (ADSC) par culture d’amplification ont montré des résultats prometteurs dans différentes pathologies auto-immunes et pourraient permettre la prise en charge de ces patients. Afin d’évaluer leur potentiel et d’étudier les mécanismes d’acti

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Dvořák, Jan. "Řiditelné analogové elektronické obvody neceločíselného řádu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-433474.

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Disertační práce se zabývá syntézou a analýzou nových obvodových struktur neceločíselného (fraktálního) řádu s řiditelnými parametry. Hlavní cíl této práce je návrh nových řešení filtračních struktur fraktálního řádu v proudovém módu, emulátorů prvků fraktálního řádu a také oscilátorů. Práce obsahuje návrh tří emulátorů pasivního prvku fraktálního řádu, tři filtrační struktury a dva oscilátory navržené na základě využití pasivního prvku fraktálního řádu v jejich obvodové struktuře a dvě obecné koncepce filtrů fraktálního řádu založené na využití aproximace přenosové funkce fraktálního řádu. Na

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Ištvan, Kucora. "Dijagnostika oštećenja i procena preostalog životnog veka cevi etilenskih peći." Phd thesis, Univerzitet u Novom Sadu, Tehnički fakultet Mihajlo Pupin u Zrenjaninu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=101287&source=NDLTD&language=en.

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Disertacija je posvećena problemimao&scaron;tećenja cevi pirolitičkih peći u fabrici etilena,kao i metodima procene preostalog ţivotnogveka cevi peći, uop&scaron;tava teorijska i praktičnaistraţivanja koja su sprovedena za vremetrajanja doktorskih studija.Peć za pirolizu benzina je uzeta kao tipičanprimer za proučavanje preostalog ţivotnog vekana osnovu prikupljenih podataka o cevima peći,kao &scaron;to su: redukcija debljine zida, povećanjespoljnjeg prečnika, tvrdoća i metalografskaistraţivanja, itd., a eksperimentalni rezultati sudobiveni iz pripremljenih isečaka cevi peći.Razmatra se veliki

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Books on the topic "Mole fractions"

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Sun, Guanghui, Chengwei Wu, Xiaolei Li, Zhiqiang Ma, Shidong Xu, and Xiangyu Shao. Fractional-Order Sliding Mode Control: Methodologies and Applications. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-60847-6.

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Bandyopadhyay, Bijnan, and Shyam Kamal. Stabilization and Control of Fractional Order Systems: A Sliding Mode Approach. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-08621-7.

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Jefferson, Thomas A., James G. Mead, and Carl C. Kinze. Nomenclature of the Larger Toothed Whales (Odontocetes): A Historical Review. Smithsonian Institution Scholarly Press, 2023. http://dx.doi.org/10.5479/si.21954029.

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More than 100 species of large odontocete cetaceans (i.e., families Ziphiidae, Physeteridae, and Kogiidae) have been described since our binomial nomenclatorial system was initiated by Carl Linnaeus in 1758. Only a fraction of these are currently recognized as valid species. The taxonomic revisions that are being recommended by recent and ongoing studies within this group require a detailed understanding of their nomenclatural history. We here review all 114 nominal species of extant beaked and sperm whales. Of these, 27 species are currently considered valid, 6 are nomina dubia, 10 are nomina

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Schumer, Peter D. Fractions. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/9780198916567.001.0001.

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Abstract This work details a great deal of the history and manifest forms of fractions within mathematics. Rational numbers are fractions having either a terminating or repeating decimal expansion. Determining their decimal expansions, as well as the period length of repeating decimals, is completely worked out. Modern base 10 decimal expansions are compared with ancient Babylonian base 60 sexagesimal expansions. This leads to the study of infinite sums, especially to geometric series and the notions of convergence and divergence. The Fibonacci numbers are studied along with the series for 1/8

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Bandyopadhyay, Bijnan, and Shyam Kamal. Stabilization and Control of Fractional Order Systems: A Sliding Mode Approach. Springer, 2014.

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Bandyopadhyay, Bijnan, and Shyam Kamal. Stabilization and Control of Fractional Order Systems: A Sliding Mode Approach. Springer, 2014.

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Bandyopadhyay, Bijnan, and Shyam Kamal. Stabilization and Control of Fractional Order Systems: A Sliding Mode Approach. Springer, 2016.

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Xu, Shidong. Fractional-Order Sliding Mode Control: Methodologies and Applications. Springer, 2024.

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Amount of Substance: Avogadro Constant, Atomic Weight, Law of Definite Proportions, Gas Constant, Osmotic Pressure, Mole Fraction. Books LLC, 2010.

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Thermodynamic properties of homogeneous mixtures of nitrogen and water from 440 to 1000 K, up to 100 MPa and 0.8 mole fraction N₂. U.S. Dept. of Commerce, National Institute of Standards and Technology, 1993.

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Book chapters on the topic "Mole fractions"

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Gooch, Jan W. "Mole Fraction." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7653.

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Beals, Richard, and Roderick S. C. Wong. "Padé approximants and continued fractions." In More Explorations in Complex Functions. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-28288-1_12.

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Czaika, Mathias, and Constantin Reinprecht. "Migration Drivers: Why Do People Migrate?" In IMISCOE Research Series. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92377-8_3.

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AbstractGrowing social and economic inequalities, and consequently, unfulfilled life aspirations trigger the migration intentions of millions, if not billions of people around the world. Surveys by Gallup World Poll suggest that more than 750 million adults would like to migrate if they had the chance to do so (Esipova et al., 2018). Hence, globally ‘only’ one in eight adults express a desire to migrate. This is a surprisingly small fraction given the fact that a much larger but unknown number of people would have good reasons to migrate in order to realise economic, professional, political, o

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Mee, Robert W. "More Fractional Factorial Design Examples." In A Comprehensive Guide to Factorial Two-Level Experimentation. Springer New York, 2009. http://dx.doi.org/10.1007/b105081_11.

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Tsirimokou, Georgia, Costas Psychalinos, and Ahmed Elwakil. "Current-Mode Fractional-Order Filters." In SpringerBriefs in Electrical and Computer Engineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-55633-8_3.

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Tsirimokou, Georgia, Costas Psychalinos, and Ahmed Elwakil. "Voltage-Mode Fractional-Order Filters." In SpringerBriefs in Electrical and Computer Engineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-55633-8_4.

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Stormer, Horst L., Daniel C. Tsui, and Arthur C. Gossard. "The Fractional Quantum Hall Effect." In More Things in Heaven and Earth. Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1512-7_31.

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Loya, Paul. "More on the Infinite: Products and Partial Fractions." In Amazing and Aesthetic Aspects of Analysis. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-6795-7_7.

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Byun, Sung-Soo, and Peter J. Forrester. "Further Theory and Applications." In KIAS Springer Series in Mathematics. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-5173-0_6.

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AbstractIn addition to an analogy with the Boltzmann factor of the OCP with inverse temperature $$\beta = 2$$ β = 2 , the GinUE eigenvalue PDF permits an interpretation as the absolute value squared of the ground state wave function for spinless fermions in the plane subject to a perpendicular magnetic field. More generally, for $$\beta $$ β twice an odd positive integer m the OCP Boltzmann factor occurs as proportional to the absolute value squared of Laughlin trial wavefunction in the theory of the fractional quantum Hall effect with filling fraction 1/m. In relation to the topic of chaotic

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Efe, Mehmet Önder. "Fractional Order Sliding Mode Controller Design for Fractional Order Dynamic Systems." In New Trends in Nanotechnology and Fractional Calculus Applications. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-3293-5_40.

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Conference papers on the topic "Mole fractions"

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Martínez-Revuelta, Rubén, Horacio I. Solís-Cisneros, Ariel Fong-González, Jorge L. Camas-Anzueto, and Rubén Grajales-Coutiño. "Differences between InGaN solar cells graded." In Latin America Optics and Photonics Conference. Optica Publishing Group, 2024. https://doi.org/10.1364/laop.2024.m4d.4.

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Using a finite element numerical calculation software (SILVACO), were made simulations for InxGa1−xN solar cells with graduated absorbent layers with Indium mole fractions ranging from 10% to 50%, with an increase of 10% for each simulation.

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Mousavi, Mahdi, and Ville Alopaeus. "Redefining Stage Efficiency in Liquid-Liquid Extraction: Development and Application of a Modified Murphree Efficiency." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.174222.

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Liquid-liquid extraction stages often deviate from equilibrium due to factors like insufficient mixing, making accurate efficiency modeling essential for process simulation. This study addresses the limitations of Aspen Plus (AP), which distorts equilibrium calculations by directly multiplying efficiency with the distribution coefficient. A modified Murphree efficiency definition, more suitable for liquid-liquid systems but absent in AP's Extraction Column module, was implemented using Aspen Custom Modeler (ACM). The custom multi-stage extraction column model replaces mole fractions with mole

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Miranda, Carlos Mejía, Dionisio Laverde Cataño, and Haydée Quiroga Becerra. "Method for Simulating the Effect of Pressure in Transfer Lines on the Corrosivity of HACs." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-06067.

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Abstract The decrease of world reserves of conventional crude has led the oil industry to increase the percentage of so-called opportunity crudes in blends entering the distillation units. Among opportunity crudes are the high acid crudes, which cause corrosion problems in the temperature range 220-400°C. The heterogeneity in the chemical nature of naphthenic acids present in crude hinders the development of accurate predictive tools. Many studies have been done to evaluate the effect of temperature and hydrodynamic conditions on the corrosivity of naphthenic acids. However, the effect of pres

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Chang, Qiuhao, Liangliang Huang, and Xingru Wu. "A Molecular Level Study of Water-Oil Interface in the CO2 EOR Under Low Pressure Condition." In SPE Improved Oil Recovery Conference. SPE, 2022. http://dx.doi.org/10.2118/209415-ms.

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Abstract In this study, molecular dynamics simulations have been performed to study the interfacial properties between water and oil with different mole fractions of CO2 under 8 MPa and 345 K. Simulation results show that with the increase of CO2 mole fraction, more CO2 got adsorbed in the water-oil interface region. Such CO2 increase weakened water and oil interactions at the interface, resulting in a decrease of the interfacial tension (IFT). Moreover, the water-oil IFT decreased significantly from 0 to 0.40 CO2 mole fractions. But the change was small for higher CO2 mole fractions of 0.40 t

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Lee, Dongryul, and Joongmyeon Bae. "Relationship Between Water Transfer Through Membrane and Species Mole Fractions in a Micro PEMFC Channel." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62077.

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Two main water transport phenomena occur in the electrolyte of PEMFC. Electro-osmotic drag results from proton movements that promote water transport from anode to cathode. Back diffusion is caused by concentration difference that promotes water diffusion from cathode to anode. Electro-osmotic drag is more dominant than back diffusion when the net water transfer coefficient (α) is over zero, and vice versa. Species mole fractions are determined from net water transfer as a result of water transport phenomena and reaction rates related to current density. The hydrogen mole fraction has an extre

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Tanimoto, Ryu, Takuya Tezuka, Susumu Hasegawa, Hisashi Nakamura, and Kaoru Maruta. "Soot and PAH Formation Characteristics in a Micro Flow Reactor With a Controlled Temperature Profile." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44454.

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To examine soot and PAH formation processes for rich methane/air and acetylene/air mixtures, a micro flow reactor with a controlled temperature profile was employed. In the experiment for a methane/air mixture, four kinds of responses to the variations of flow velocity and equivalence ratio were observed as follows: soot formation without a flame; a flame with soot formation; a flame without soot formation; and neither flame nor soot formation. Soot formations were observed in low flow velocity and high equivalence ratio. Starting point of soot formation shifted to the upstream side, i.e., low

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Prassas, Ilias, Alex M. K. P. Taylor, and J. H. Whitelaw. "Simultaneous Measurement of Velocity, Size and Temperature of Burning Coal Particles in Swirl-Stabilised Vitiated Air Flames." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0862.

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Abstract The velocity, size and volume flux of individual burning and non-burning particles were measured simultaneously in the near-burner region of a natural-gas supported 8 kW swirl burner for swirl number 0.68, using in the secondary stream unheated air as well as preheated vitiated air as oxidant, with oxygen mole fraction of 0.165 and 0.177, at 400 and 350 °C preheat temperatures respectively. An optical instrument based on a combined shadow Doppler velocimeter instrument (for sizing particles of arbitrary shape) and spatially-precise two-colour pyrometry was developed for the measuremen

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Linesh, J., K. Sudeesh, T. M. Libish, P. Radhakrishnan, and V. P. N. Nampoori. "Optical fiber sensor to determine critical mole fractions of alcohol-water binary mixtures." In International Conference on Fiber Optics and Photonics, edited by Sunil K. Khijwania, Banshi D. Gupta, Bishnu P. Pal, and Anurag Sharma. SPIE, 2010. http://dx.doi.org/10.1117/12.897809.

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Pal, Gopalendu, and Michael F. Modest. "A New Hybrid Full-Spectrum Correlated k-Distribution Method for Radiative Transfer Calculations in Nonhomogeneous Gas Mixtures." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32673.

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The full-spectrum k-distribution (FSK) approach is a promising model for radiative transfer calculations in participating media. FSK achieves line-by-line (LBL) accuracy for homogeneous media at a tiny fraction of LBL’s high computational cost. However, inhomogeneities in gas temperature, total pressure and component-gas mole fractions change the spectral distribution of the absorption coefficient and can cause inaccuracies in the FSK method. In this paper, a new hybrid FSK method is proposed that combines the advantages of the multi-group FSK (MGFSK) method for temperature inhomogeneities in

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Lim, Jongmook, Jay P. Gore, and Raymond Viskanta. "A Study of the Effects of Air-Preheat on the Structure of Methane-Air Counterflow Diffusion Flames." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0618.

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Abstract The effects of air-preheat on flame structure are studied in counter-flow methane-air diffusion flames, considering air temperatures in the range 300 to 560 K. Species concentrations for H2, O2, N2, CH4, CO, CO2, C2H2 and C2H4 were measured using sampling and gas chromatography. Concentrations of NO were measured using sampling and a chemiluminescence analyzer. Results of numerical calculations using detailed chemistry were compared with the measurements. The numerical calculations and measurements show good agreement for major species. Independent of temperature in the range 300 to 5

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Reports on the topic "Mole fractions"

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Linker, Taylor, and Timothy Jacobs. PR-457-18204-R01 Variable Fuel Effects on Legacy Compressor Engines Phase IV - Predictive NOx Modeling. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011584.

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The ultimate goal of this work is to improve the current control methods for large bore, lean burn natural gas engines in order to combat performance and emissions issues during variable fuel composition events. This will be achieved in the long term by simulating the effects of variable fuel composition on a large bore, natural gas engine and developing engine control strategies which work to mitigate adverse effects. The work of Phase IV adds onto previous work by enabling the prediction of NOxemissions in the validated, full-scale engine simulation of a Cooper-Bessemer GMWH-10C developed in

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Wilson. PR-239-9525-E01 Integrated Test Plan. Pipeline Research Council International, Inc. (PRCI), 1996. http://dx.doi.org/10.55274/r0011046.

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In order to understand and eventually control formaldehyde emissions, it is necessary to investigate formaldehyde formation mechanisms and evaluate the applicability of these mechanisms to industrial gas engines. An extensive literature review was conducted to identify possible formaldehyde formation mechanisms, factors that favor these chemical mechanisms, and the relationships between various engine operating conditions and engine-out formaldehyde emissions. The literature review provided the following information on formaldehyde emissions: Formation and subsequent destruction of formaldehyd

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Chefetz, Benny, and Baoshan Xing. Sorption of hydrophobic pesticides to aliphatic components of soil organic matter. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7587241.bard.

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Sorption of hydrophobic compounds to aliphatic components of soil organic matter (SOM) is poorly understood even though these aliphatic carbons are a major fraction of SOM. The main source of aliphatic compounds in SOM is above- and below-ground plant cuticular materials (cutin, cutan and suberin). As decomposition proceeds, these aliphatic moieties tend to accumulate in soils. Therefore, if we consider that cuticular material contributes significantly to SOM, we can hypothesize that the cuticular materials play an important role in the sorption processes of hydrophobic compounds (including pe

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Roschelle, Jeremy, Britte Haugan Cheng, Nicola Hodkowski, Lina Haldar, and Julie Neisler. Transfer for Future Learning of Fractions within Cignition’s Microtutoring Approach. Digital Promise, 2020. http://dx.doi.org/10.51388/20.500.12265/95.

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In this exploratory research project, our team’s goal was to design and begin validation of a measurement approach that could provide indication of a student’s ability to transfer their mathematics understanding to future, more advanced mathematical topics. Assessing transfer of learning in mathematics and other topics is an enduring challenge. We sought to invent and validate an approach to transfer that would be relevant to improving Cignition’s product, would leverage Cignition’s use of online 1:1 tutoring, and would pioneer an approach that would contribute more broadly to assessment resea

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Gallagher, John S. Thermodynamic properties of homogeneous mixtures of nitrogen and water from 440 to 1000 K, up to 100 MPa and 0.8 mole fraction N₂. National Bureau of Standards, 1993. http://dx.doi.org/10.6028/nist.tn.1404.

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Rolfe, Terry. Measurements of N2O and SF6 Mole Fraction and N2O Isotopic Composition between 1978 and 1997 in Archived Air Samples from Cape Meares, Oregon. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.7003.

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Chefetz, Benny, and Jon Chorover. Sorption and Mobility of Pharmaceutical Compounds in Soils Irrigated with Treated Wastewater. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7592117.bard.

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Research into the fate of pharmaceutical compounds (PCs) in the environment has focused on aspects of removal efficiency during sewage treatment, degradation in surface water and accumulation in soils and sediments. However, very little information is available on the binding interactions of pharmaceuticals with dissolved organic matter (DOM) originating from wastewater treatment. Such interactions can significantly affect the transport potential of PCs in soils by altering compound affinity for soil particle surfaces. Our primary hypothesis is that the transport potential of PCs in soils is s

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Chefetz, Benny, and Jon Chorover. Sorption and Mobility of Pharmaceutical Compounds in Soils Irrigated with Treated Wastewater. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7709883.bard.

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Research into the fate of pharmaceutical compounds (PCs) in the environment has focused on aspects of removal efficiency during sewage treatment, degradation in surface water and accumulation in soils and sediments. However, very little information is available on the binding interactions of pharmaceuticals with dissolved organic matter (DOM) originating from wastewater treatment. Such interactions can significantly affect the transport potential of PCs in soils by altering compound affinity for soil particle surfaces. Our primary hypothesis is that the transport potential of PCs in soils is s

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Skelly, Andrea C., Eric Chang, Jessica Bordley, et al. Radiation Therapy for Metastatic Bone Disease: Effectiveness and Harms. Agency for Healthcare Research and Quality (AHRQ), 2023. http://dx.doi.org/10.23970/ahrqepccer265.

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Objectives. To evaluate the comparative effectiveness and harms of external beam radiation therapy (EBRT) for palliative treatment of metastatic bone disease (MBD). Data sources. Four electronic databases from 1985 to January 30, 2023; a targeted search for re-irradiation through January 30, 2023; reference lists; and a Federal Register notice. Review methods. Using predefined criteria and dual review, we selected randomized controlled trials (RCTs) and nonrandomized studies of interventions (NRSIs) comparing dose-fractionation schemes and EBRT delivery techniques (for initial radiation and re

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Fobozzi, Francesco. Measurement of the Branching Fraction And Search for Direct CP-Violation in the B+- --> J/Psi Pi+- Decay Mode at BaBar. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/890245.

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