Relevant bibliographies by topics / Concentration gradients

Contents

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

Academic literature on the topic 'Concentration gradients'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Concentration gradients"

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Chittur K, Subramaniam, Aishwarya Chandran, Ashwini Khandelwal, and Sivakumar A. "Energy Conversion using electrolytic concentration gradients." MRS Proceedings 1774 (2015): 51–62. http://dx.doi.org/10.1557/opl.2015.758.

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ABSTRACTSalinity gradient is an enormous source of clean energy. A process for potential generation from an ionic concentration gradient produced in single and multicell assembly is presented. The ionic gradient is created using a fuel cell type cell with a micro-porous ion exchange membrane, both anionic (AEM) and cationic (CEM). Various salinity gradients, Salt : Fresh, from 100 : 0 to 16000 : 0 was established using NaCl solution, in the electrode chambers. A potential of 20 mV/cm to 25 mV/cm can be realized at ambient temperatures and pressures for a bipolar AEM/CEM cell. The performance w
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Lagator, Mato, Hildegard Uecker, and Paul Neve. "Adaptation at different points along antibiotic concentration gradients." Biology Letters 17, no. 5 (May 2021): 20200913. http://dx.doi.org/10.1098/rsbl.2020.0913.

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Antibiotic concentrations vary dramatically in the body and the environment. Hence, understanding the dynamics of resistance evolution along antibiotic concentration gradients is critical for predicting and slowing the emergence and spread of resistance. While it has been shown that increasing the concentration of an antibiotic slows resistance evolution, how adaptation to one antibiotic concentration correlates with fitness at other points along the gradient has not received much attention. Here, we selected populations of Escherichia coli at several points along a concentration gradient for
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Carlow, G. R., and M. Zinke-Allmang. "Clustering across concentration gradients." Canadian Journal of Physics 72, no. 11-12 (November 1, 1994): 812–17. http://dx.doi.org/10.1139/p94-107.

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Clustering experiments on surfaces are of fundamental interest to verify theoretical concepts for phase-separation processes such as statistical self-similarity and scaling behaviour. Unfortunately, often the differences between theoretical models are too small to be studied with standard sample preparation techniques, as experimental uncertainties result in variations in the results of the same order of magnitude as the effects that we want to study. In this paper we study a modified approach where two different initial morphologies are prepared on the same surface so that the dynamic process
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Alicia, Toh G. G., Chun Yang, Zhiping Wang, and Nam-Trung Nguyen. "Combinational concentration gradient confinement through stagnation flow." Lab on a Chip 16, no. 2 (2016): 368–76. http://dx.doi.org/10.1039/c5lc01137j.

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Williams, Ian, Sangyoon Lee, Azzurra Apriceno, Richard P. Sear, and Giuseppe Battaglia. "Diffusioosmotic and convective flows induced by a nonelectrolyte concentration gradient." Proceedings of the National Academy of Sciences 117, no. 41 (September 28, 2020): 25263–71. http://dx.doi.org/10.1073/pnas.2009072117.

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Glucose is an important energy source in our bodies, and its consumption results in gradients over length scales ranging from the subcellular to entire organs. Concentration gradients can drive material transport through both diffusioosmosis and convection. Convection arises because concentration gradients are mass density gradients. Diffusioosmosis is fluid flow induced by the interaction between a solute and a solid surface. A concentration gradient parallel to a surface creates an osmotic pressure gradient near the surface, resulting in flow. Diffusioosmosis is well understood for electroly
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Goodhill, Geoffrey J., Ming Gu, and Jeffrey S. Urbach. "Predicting Axonal Response to Molecular Gradients with a Computational Model of Filopodial Dynamics." Neural Computation 16, no. 11 (November 1, 2004): 2221–43. http://dx.doi.org/10.1162/0899766041941934.

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Axons are often guided to their targets in the developing nervous system by attractive or repulsive molecular concentration gradients. We propose a computational model for gradient sensing and directed movement of the growth cone mediated by filopodia. We show that relatively simple mechanisms are sufficient to generate realistic trajectories for both the short-term response of axons to steep gradients and the long-term response of axons to shallow gradients. The model makes testable predictions for axonal response to attractive and repulsive gradients of different concentrations and steepness
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Jones, D. P. "Intracellular diffusion gradients of O2 and ATP." American Journal of Physiology-Cell Physiology 250, no. 5 (May 1, 1986): C663—C675. http://dx.doi.org/10.1152/ajpcell.1986.250.5.c663.

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Endogenous enzymes with different subcellular localizations provide in situ probes to study O2 and ATP concentration at various sites within cells. Results from this approach indicate that substantial intracellular concentration gradients occur under some O2- and ATP-limited conditions. These studies, along with electron microscopic analyses and mathematical modeling, indicate that clustering and distribution of mitochondria are major factors in determining the magnitude and location of the concentration gradients. The mitochondria appear to be clustered in sites of high ATP demand to maximize
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Weber, Christoph A., Chiu Fan Lee, and Frank Jülicher. "Droplet ripening in concentration gradients." New Journal of Physics 19, no. 5 (May 17, 2017): 053021. http://dx.doi.org/10.1088/1367-2630/aa6b84.

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Day, Charles. "Concentration gradients promote antibiotic resistance." Physics Today 65, no. 8 (August 2012): 20. http://dx.doi.org/10.1063/pt.3.1670.

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Reenstra, W. W., and J. G. Forte. "Characterization of K+ and Cl- conductances in apical membrane vesicles from stimulated rabbit oxyntic cells." American Journal of Physiology-Gastrointestinal and Liver Physiology 259, no. 5 (November 1, 1990): G850—G858. http://dx.doi.org/10.1152/ajpgi.1990.259.5.g850.

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K+ and Cl- conductance pathways in apical membrane vesicles (SA vesicles) of stimulated oxyntic cells have been characterized. SA vesicles were prepared from rabbit fundic mucosa after stimulation of acid secretion with histamine. Conductive K+ and Cl- fluxes were assayed by several methods: by their effects on pH gradient formation by endogenous H(+)-K(+)-ATPase, by the protonophore-induced dissipation of preformed pH gradients, and by the effects of channel blockers. pH gradient formation by H(+)-K(+)-ATPase required K+ and was greatly reduced when the permeant anion chloride was replaced by
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Dissertations / Theses on the topic "Concentration gradients"

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Zaleski, Christopher John. "Electrochemical concentration gradients in deep eutectic solvents." Thesis, University of Leicester, 2015. http://hdl.handle.net/2381/32232.

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Concentration gradients present in the solution during the redox chemistry of selected metals and conducting polymer (poly(3,4ethylenedioxythiophene) (PEDOT)) films redox cycled in Deep Eutectic Solvents (DES) were observed for the first time through the application of the Probe Beam Deflection (PBD) technique combined with the Electrochemical Quartz Crystal Microbalance (EQCM). Suitability of choline chloride (ChCl) based DES for applications as electrolytes in PEDOT based charge storage devices has also been investigated using EQCM. The combination of carefully optimized experimental paramet
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Gardiner, Allen Brooke. "Measurement of concentration gradients in photoresist films and study of the influence of these gradients on photoresist performance /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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McQuinn, Chris. "Design of a mechanical device for fabricating protein concentration gradients to study cell adhesion." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18728.

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The binding interaction between specialized proteins within the extracellular matrix (ECM) and specific membrane receptors in cells are pivotal for regulating cell adhesion and migration. Current methods used to generate patterned ECM substrates for the study of migration involve technically complicated devices that are expensive and demand specialized training. Some are also not applicable to the microscopic scale relevant for cells or provide inadequate substrates for growing sensitive cells such as neurons. This Masters thesis introduces an effective method to pattern proteins with micron s
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Safronov, Grigory. "Formation and disintegration of small-scale concentration gradients of trace metals on aggregate scale." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974021512.

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Welsche, Mathias Markus [Verfasser], and Roland [Akademischer Betreuer] Zengerle. "Determination of enzyme kinetics in micro concentration gradients = Bestimmung von Enzym-Kinetiken in Mikro-Konzentrationsgradienten." Freiburg : Universität, 2013. http://d-nb.info/1123475792/34.

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Bui, Hanh. "A COMPARISON OF TWO COMMERCIAL STRIPS WITH PREDEFINED ANTIBIOTIC CONCENTRATION GRADIENTS FOR SUSCEPTIBILITY TESTING OF PERIODONTAL BACTERIAL PATHOGENS." Master's thesis, Temple University Libraries, 2013. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/216515.

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Oral Biology<br>M.S.<br>Objectives: Systemic antibiotics are generally recognized as providing a beneficial impact in treatment of both aggressive and chronic periodontitis. Since strains of periodontal pathogens among periodontitis patients may vary in their antibiotic drug resistance, the American Academy of Periodontology recommends antimicrobial susceptibility testing of suspected periodontal pathogens prior to administration of systemic periodontal antibiotic therapy, to reduce the risk of a treatment failure due to pathogen antibiotic resistance. E-test and MIC Test Strip assays are two
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Huraux, Karine. "Morphologies et gradients de concentration induits par le séchage dans des solutions polymères et des gels." Paris 6, 2008. http://www.theses.fr/2008PA066457.

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Cette thèse présente l’étude de morphologies de surface induites, à la surface de films polymères et de gels, par le séchage. La première partie porte sur la séparation de phases induite par évaporation du solvant dans des films réalisés à partir d’un mélange de deux polymères immiscibles, l’un vitreux, l’autre cristallin à température ambiante, en solvant commun. La morphologie obtenue dépend des conditions de séchage et des propriétés physicochimiques du système. Nous avons mis en évidence, en fonction de la composition du mélange, une inversion de morphologie. L’étude d’une composition donn
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Kozawa, Kathleen Hiromi. "Investigation of pollution concentrations and pollution concentration gradients in communities adjacent to the ports of Los Angeles and Long Beach using a mobile monitoring platform." Diss., Restricted to subscribing institutions, 2009. http://proquest.umi.com/pqdweb?did=1723112471&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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Meierdierks, Jana [Verfasser], and Peter [Akademischer Betreuer] Grathwohl. "Soil-Atmosphere Exchange of PAHs : The Determination of Concentration Gradients with Passive Samplers / Jana Meierdierks ; Betreuer: Peter Grathwohl." Tübingen : Universitätsbibliothek Tübingen, 2019. http://d-nb.info/1205002448/34.

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Anthony, James Lee. "The influence of turbulence, temperature, and nutrient concentration gradients on sediment-water exchanges of nitrogen and phosphorus in lakes." Connect to online resource, 2007. 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:3284439.

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Books on the topic "Concentration gradients"

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L, Tracy Linda, Wilson William K, and United States. Forest Service. Northern Research Station, eds. Chloride concentration gradients in tank-stored hydraulic fracturing fluids following flowback. Newtown Square, PA: U.S. Dept. of Agriculture, Forest Service, Northern Research Station, 2011.

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Stewart, Renée. Ontogenetic changes in dietary and tissue metal concentration in wild yellow perch (Perca flavescens) from a metal contamination gradient. Sudbury, Ont: Laurentian University, 2003.

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United States. National Aeronautics and Space Administration., ed. Fugacity and concentration gradients in a gravity field. [Washington, DC]: National Aeronautics and Space Administration, 1986.

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Immobilized pH Gradients: Theory and Methodology. Elsevier Science Publishing Company, 1990.

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T, Chai A., Sun D. J, and United States. National Aeronautics and Space Administration., eds. Convective flows in enclosures with vertical temperature or concentration gradients. [Washington, DC]: National Aeronautics and Space Administration, 1989.

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An-Ti, Chai, Sun D. J, and United States. National Aeronautics and Space Administration., eds. Convective flows in enclosures with vertical temperature or concentration gradients. [Washington, DC]: National Aeronautics and Space Administration, 1989.

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Narayanan, Ramachandran, and George C. Marshall Space Flight Center., eds. A photometric technique for determining fluid concentration using consumer-grade hardware. [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, Marshall Space Flight Center, 1999.

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Williams, M. G., and P. J. Stopford. The Influence of Concentration Gradients Across the Outlets of a Gas Centrifuge. AEA Technology Plc, 1986.

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Moore, Kathryn Jean. Combined concentration gradients of neurotrophic factors act in synergy to guide neurite outgrowth. 2004.

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Fourier transform infrared and Raman spectroscopic characterization of homogeneous solution concentration gradients near a container wall at different temperatures. Huntsville, AL: Dept. of Chemistry, the University of Alabama in Huntsville, 1991.

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Book chapters on the topic "Concentration gradients"

1

Deamer, David. "Concentration Gradients." In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_226-4.

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Deamer, David. "Concentration Gradients." In Encyclopedia of Astrobiology, 533. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_226.

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Deamer, David. "Concentration Gradients." In Encyclopedia of Astrobiology, 354–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_226.

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Yoo, Han-Ill. "Diffusion in Concentration Gradients." In Lectures on Kinetic Processes in Materials, 145–72. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-25950-1_4.

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Meyer, Tobias, Nancy L. Allbritton, and Elena Oancea. "Regulation of Nuclear Calcium Concentration." In Ciba Foundation Symposium 188 - Calcium Waves, Gradients and Oscillations, 252–78. Chichester, UK: John Wiley & Sons, Ltd., 2007. http://dx.doi.org/10.1002/9780470514696.ch14.

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Lavoie, Pascal, and Mark P. Taylor. "Alumina Concentration Gradients in Aluminium Reduction Cells." In Advances in Molten Slags, Fluxes, and Salts, 791–98. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119333197.ch84.

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Talman, S. J., and E. H. Perkins. "Concentration Gradients Associated With Acid Gas Injection." In Acid Gas Injection and Related Technologies, 347–59. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118094273.ch21.

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Lavoie, Pascal, and Mark P. Taylor. "Alumina Concentration Gradients in Aluminium Reduction Cells." In Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016, 791–98. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48769-4_84.

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Serra, Roberto, and Marco Villani. "A CA Model of Spontaneous Formation of Concentration Gradients." In Lecture Notes in Computer Science, 385–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-79992-4_50.

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Tessier, Jayson, Katie Cantin, and David Thor Magnusson. "Investigation of Alumina Concentration Gradients Within Hall-Héroult Electrolytic Bath." In The Minerals, Metals & Materials Series, 515–22. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72284-9_68.

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Conference papers on the topic "Concentration gradients"

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Sukumar, Pavithra, and Mohammad A. Qasaimeh. "Microfluidic mixing elements for concentration gradients." In 2018 Advances in Science and Engineering Technology International Conferences (ASET). IEEE, 2018. http://dx.doi.org/10.1109/icaset.2018.8376904.

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Calhoon, William, and Neeraj Sinha. "Detonation Wave Propagation in Concentration Gradients." In 43rd AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-1167.

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Lee, Jacky S. H., Yandong Hu, and Dongqing Li. "Electrokinetic Concentration Gradient Generation Using a Converging-Diverging Microchannel." In ASME 3rd International Conference on Microchannels and Minichannels. ASMEDC, 2005. http://dx.doi.org/10.1115/icmm2005-75116.

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Creation of concentration gradients is important in the study of biological and chemical processes that are sensitive to concentration variations. This paper presents a simple method to generate a linear concentration gradient in electroosmotic flow in microchannels with converging and diverging geometries. The method is based on the enhanced diffusive mixing inside the microchannel. By varying the converging-diverging geometries, the degree of diffusive mixing can be controlled. Different concentration gradients can be obtained by varying the applied potential and the geometry. Concentration
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Qasaimeh, Mohammad A., Melina Astolfi, Michal Pyzik, Silvia Vidal, and David Juncker. "Neutrophil dynamics during migration in microfluidic concentration gradients." In 2014 40th Annual Northeast Bioengineering Conference (NEBEC). IEEE, 2014. http://dx.doi.org/10.1109/nebec.2014.6972913.

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Kudriakov, S., M. Kuznetsov, E. Studer, and J. Grune. "Hydrogen-Air Deflagration in the Presence of Longitudinal Concentration Gradients." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-66619.

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Hydrogen gathering at the top of the containment or reactor building may occur due to an interaction of molten corium and water followed by a severe accident of a nuclear reactor (like TMI, Chernobyl, Fukushima accidents). It accumulates usually in a containment of nuclear reactor as a stratified semi-confined layer of hydrogen-air mixture. Depending on the local concentration and/or presence and activation of mitigation devices, hydrogen may burn following different combustion regimes. Thus, there is a need to estimate the severity of a combustion process under given geometrical configuration
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Selimović, Šeila, Woo Young Sim, Sang Bok Kim, Yun Ho Jang, Won Gu Lee, Masoud Khabiry, Hojae Bae, Sachin Jambovane, Jong Wook Hong, and Ali Khademhosseini. "Exponential Concentration Gradients in Microfluidic Devices for Cell Studies." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53529.

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Microscale technologies are a powerful tool in many biological and chemical applications, as they utilize only small reagent volumes. Microfluidics is especially well compatible with biological materials and applications, for example protein crystallization, high throughput assay analysis, and various cell studies. In that context, non-linear gradients of particles and molecules as well as efficient mixing of the components inside the lab-on-a-chip are crucial for many experimental studies: testing of and analyzing biological responses to different analyte concentration levels, studying the na
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WANG, L., A. CHAI, and D. SUN. "Convective flows in enclosures with vertical temperature or concentration gradients." In 27th Aerospace Sciences Meeting. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-69.

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Lin, Yu-Sheng, and Chunfei Hu. "Effectively anticancer drug concentration gradients by using 3D microfluidic chip." In 2017 International Conference on Optical MEMS and Nanophotonics (OMN). IEEE, 2017. http://dx.doi.org/10.1109/omn.2017.8051475.

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Kudriakov, S., E. Studer, M. Kuznetsov, and J. Grune. "Experimental and Numerical Investigation of H2-Air Deflagration in the Presence of Concentration Gradients." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16910.

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A set of experiments performed at Karlsruhe Institute of Technology (KIT) in the framework of the LACOMECO European project is devoted to flame propagation in an obstructed large scale facility A3 (of 8 m height and 33 m3 volume) with initially vertical hydrogen concentration gradients. Almost linear positive and negative (relative to gravity) concentration gradients are created prior to ignition in the range from 4% to 13%, and the process of flame acceleration is investigated depending on hydrogen concentration gradient and ignition positions. In this paper we describe the A3 facility and an
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Knauer, Oliver S., Andreas Braeuer, Matthias C. Lang, and Alfred Leipertz. "Measurement of Concentration and Temperature Gradients at Binary Mixture Boiling Bubbles." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22054.

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Due to the high heat flux available, nucleate boiling is one of the most utilized processes for the transfer of large amounts of heat in chemical or power engineering applications. Nevertheless, the basic physical phenomena of this kind of heat transfer are physically not well understood, especially for multi-component mixtures in which the heat transfer coefficient is a function of the mixture composition. To apprehend the binary mixture boiling phenomena, the knowledge of the composition and temperature field surrounding a boiling bubble near the heater surface is of great impact. These quan
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Reports on the topic "Concentration gradients"

1

Edwards, Pamela J., Linda L. Tracy, and William K. Wilson. Chloride concentration gradients in tank-stored hydraulic fracturing fluids following flowback. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station, 2011. http://dx.doi.org/10.2737/nrs-rp-14.

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Ward, Nicholas, Julia Indivero, Cailene Gunn, Wenzhi Wang, Vanessa Bailey, and Nate McDowell. Longitudinal gradients in tree stem greenhouse gas concentrations across six Pacific Northwest coastal forests. Office of Scientific and Technical Information (OSTI), August 2020. http://dx.doi.org/10.2172/1648314.

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Katherine Barbeau. Characterizing the production and retention of dissolved iron as Fe(II) across a natural gradient in chlorophyll concentrations in the Southern Drake Passage - Final Technical Report. Office of Scientific and Technical Information (OSTI), April 2007. http://dx.doi.org/10.2172/901921.

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