Academic literature on the topic 'Gas channels'

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Journal articles on the topic "Gas channels"

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Gruznov, Vladimir M., and Alexander B. Vorozhtsov. "Gas-Dynamic Kinetics of Vapour Sampling in the Detection of Explosives." Molecules 24, no. 23 (2019): 4409. http://dx.doi.org/10.3390/molecules24234409.

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The dynamic sorption concentration of explosive vapours on concentrators made of a metal mesh, and the transportation of explosive vapours through the extended metal channels are considered. The efficiency of the concentration and transportation is determined by the breakthrough of the substance’s molecules through the channels. The research methods we used were breakthrough calculation theory and experiment. When calculating the breakthrough, a mesh was presented as a set of parallel identical channels. Wire mesh and extended channels were made of stainless steel. The breakthrough is determin
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Walewska, Agnieszka, Adam Szewczyk, and Piotr Koprowski. "Gas Signaling Molecules and Mitochondrial Potassium Channels." International Journal of Molecular Sciences 19, no. 10 (2018): 3227. http://dx.doi.org/10.3390/ijms19103227.

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Recently, gaseous signaling molecules, such as carbon monoxide (CO), nitric oxide (NO), and hydrogen sulfide (H2S), which were previously considered to be highly toxic, have been of increasing interest due to their beneficial effects at low concentrations. These so-called gasotransmitters affect many cellular processes, such as apoptosis, proliferation, cytoprotection, oxygen sensing, ATP synthesis, and cellular respiration. It is thought that mitochondria, specifically their respiratory complexes, constitute an important target for these gases. On the other hand, increasing evidence of a cyto
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Похабов, Д. А., А. Г. Погосов, Е. Ю. Жданов, А. К. Бакаров та А. А. Шкляев. "Двухканальный электронный транспорт в подвешенных квантовых точечных контактах с боковыми затворами". Физика и техника полупроводников 54, № 12 (2020): 1344. http://dx.doi.org/10.21883/ftp.2020.12.50235.9512.

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The conductance of a suspended quantum point contact fabricated from GaAs/AlGaAs heterostructures with a two-dimensional electron gas, equipped with the in-plane side gates separated from the constriction using lithographical trenches, is studied. The conductance as a function of the gate voltages demonstrates unusual double-channel regime with independent channel’s conductance quantization: two side gates can drive the conductance of the separate channels independently. A possible electrostatic mechanism of the double-channel structure formation inside a single constriction is connected with
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Offermans, Peter, Roman Vitushinsky, Mercedes Crego-Calama, and Sywert H. Brongersma. "Gas Sensing with AlGaN/GaN 2DEG Channels." Procedia Engineering 25 (2011): 1417–20. http://dx.doi.org/10.1016/j.proeng.2011.12.350.

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Schneider, I. A., D. Kramer, A. Wokaun, and G. G. Scherer. "Oscillations in Gas Channels." Journal of The Electrochemical Society 154, no. 8 (2007): B770. http://dx.doi.org/10.1149/1.2742291.

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Schneider, I. A., S. A. Freunberger, D. Kramer, A. Wokaun, and G. G. Scherer. "Oscillations in Gas Channels." Journal of The Electrochemical Society 154, no. 4 (2007): B383. http://dx.doi.org/10.1149/1.2435706.

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Herrera, Marcela, and Jeffrey L. Garvin. "Aquaporins as gas channels." Pflügers Archiv - European Journal of Physiology 462, no. 4 (2011): 623–30. http://dx.doi.org/10.1007/s00424-011-1002-x.

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Szwast, Maciej, and Zbigniew Szwast. "A Mathematical Model of Membrane Gas Separation with Energy Transfer by Molecules of Gas Flowing in a Channel to Molecules Penetrating this Channel from the Adjacent Channel." Chemical and Process Engineering 36, no. 2 (2015): 151–69. http://dx.doi.org/10.1515/cpe-2015-0012.

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Abstract The paper presents the mathematical modelling of selected isothermal separation processes of gaseous mixtures, taking place in plants using membranes, in particular nonporous polymer membranes. The modelling concerns membrane modules consisting of two channels - the feeding and the permeate channels. Different shapes of the channels cross-section were taken into account. Consideration was given to co-current and counter-current flows, for feeding and permeate streams, respectively, flowing together with the inert gas receiving permeate. In the proposed mathematical model it was consid
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Alexiadis, A., M. P. Dudukovic, P. Ramachandran, A. Cornell, J. Wanngård, and A. Bokkers. "The Flow Pattern in Single and Multiple Submerged Channels with Gas Evolution at the Electrodes." International Journal of Chemical Engineering 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/392613.

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We show that the gas-liquid flow pattern in a single gas-evolving electrochemical channel can be remarkably different from the flow pattern in multiple submerged gas-evolving electrochemical channels. This is due to the fact that in a single channel there is a higher accumulation of small bubbles and these can considerably affect the liquid velocity pattern which in turn may affect the performance of a cell. Since experimental work is often carried out in single channels, while industrial applications almost always involve multiple channels, this study provides insight into the factors that af
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Bantel, Carsten, Mervyn Maze, and Stefan Trapp. "Noble Gas Xenon Is a Novel Adenosine Triphosphate-sensitive Potassium Channel Opener." Anesthesiology 112, no. 3 (2010): 623–30. http://dx.doi.org/10.1097/aln.0b013e3181cf894a.

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Background Adenosine triphosphate-sensitive potassium (KATP) channels in brain are involved in neuroprotective mechanisms. Pharmacologic activation of these channels is seen as beneficial, but clinical exploitation by using classic K channel openers is hampered by their inability to cross the blood-brain barrier. This is different with the inhalational anesthetic xenon, which recently has been suggested to activate KATP channels; it partitions freely into the brain. Methods To evaluate the type and mechanism of interaction of xenon with neuronal-type KATP channels, these channels, consisting o
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Dissertations / Theses on the topic "Gas channels"

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Tribbe, Christian. "Gas/liquid flow in cylindrical and corrugated channels." Thesis, University of Surrey, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244760.

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Wu, Xuemei. "Monte-Carlo modeling of turbulent dispersion of small particles in channels." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17389.

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Goodwin, William A. "The characteristics of reduced-density channels in NH3-N2 gas mixtures." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/22941.

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A CO2 laser was used to generate reduced-density channels in various gas mixtures of ammonia and nitrogen. Interferometers were used to record the changing density resulting from the NH3 absorption of the CO2 laser radiation. One method used to determine the characteristics of the channel was based on the assumption that the resulting density profile was Gaussian shaped. The second method used the Abel Integral Transformation, requiring no pre-conditions on the density profile expect that it was cylindrically symmetric. While used extensively in plasma spectroscopy, this technique is not gener
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Dounia, Omar. "Numerical investigation of gas explosion phenomena in confined and obstructed channels." Phd thesis, Toulouse, INPT, 2018. http://oatao.univ-toulouse.fr/20584/1/DOUNIA_Omar.pdf.

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Mining, process and energy industries suffer from billions of dollars of worldwide losses every year due to Vapour Cloud Explosions (VCE). Moreover, explosion accidents are often tragic and lead to a high number of severe injuries and fatalities. The VCE scenario is complex and controlled by various mechanisms. The interplay among them is still not entirely understood. Understanding all these intricate processes is of vital importance and requires detailed experimental diagnostics. Coupling accurate numerical simulations to well documented experiments can allow an elaborate description of thes
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Sundberg, Jenny. "Heat Transfer Correlations for Gas Turbine Cooling." Thesis, Linköping University, Department of Mechanical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5446.

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<p>A first part of a ”Heat Transfer Handbook” about correlations for internal cooling of gas turbine vanes and blades has been created. The work is based on the cooling of vanes and blades 1 and 2 on different Siemens Gas Turbines. The cooling methods increase the heat transfer in the cooling channels by increasing the heat transfer coefficient and/or increasing the heat transfer surface area. The penalty paid for the increased heat transfer is higher pressure losses.</p><p>Three cooling methods, called rib turbulated cooling, matrix cooling and impingement cooling were investigated. Rib turbu
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Penache, Dan Lucius. "Heavy ion beam transport in laser initiated high current gas discharge channels." Phd thesis, [S.l.] : [s.n.], 2002. http://elib.tu-darmstadt.de/diss/000245.

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Khamaj, J. A. J. "An experimental study of heat transfer in the cooling channels of gas turbine rotor blades." Thesis, Swansea University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637783.

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This thesis presents an investigation of experimental research into the effect of rotation on the convective heat transfer mechanism inside the cooling channels of turbine rotor blades. These involved the selection of eleven different channel geometries and these have been designated alphabetically by the letters 'A' through 'K' respectively. These channels involve a collection of basic geometrical duct cross sectional shapes with the incorporation of ribbed surfaces. The leading and trailing edges of the duct are fitted with in-line or staggered ribs aligned at 30° to 45° to the central axis
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Siow, Erh Chang. "Numerical solution of a two-phase model for laminar film condensation of vapour-gas mixtures in channels." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ62848.pdf.

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Göhring, Michael [Verfasser]. "Numerical Investigation of Internal Two-Pass Gas Turbine Cooling Channels Under the Influence of Rotation / Michael Göhring." München : Verlag Dr. Hut, 2020. http://d-nb.info/1219470112/34.

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Liu, Yao-Hsien. "Heat transfer in leading and trailing edge cooling channels of the gas turbine blade under high rotation numbers." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3196.

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Books on the topic "Gas channels"

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Vilemas, Jurgis. Heat transfer in gas-cooled annular channels. Edited by Chesna B, Survila V, Zhukauskas A. A. 1923-, and Karni J. Hemisphere Pub. Corp., 1987.

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V, Simonis, and Adomaitis J. E, eds. Heat transfer augmentation in gas-cooled channels. CRC Press, 1994.

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1923-, Zhukauskas A. A., ed. Radiation and combined heat transfer in channels. Hemisphere Pub., 1987.

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Goodwin, William A. The characteristics of reduced-density channels in NH3-N2 gas mixtures. Naval Postgraduate School, 1988.

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Wayman, James L. A variance detector for signal-gap discrimination in noisy speech channels. Naval Postgraduate School, 1985.

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Rodrigue, D. MR-06, Channel Armor gap crevasse: Summary data and graphics. Louisiana Department of Natural Resources, Coastal Restoration Division, Biological Monitoring Section, 2003.

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Junjie, Wang, and Peng Leiqing, eds. Ying xiao qu dao jue ce yu guan li: Marking channels : decision and management. 3rd ed. Zhongguo ren min da xue chu ban she, 2015.

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Chang, Tony H. D. Effects of interfacial level gradient and channel slope on interfacial shear stress in near-horizontal stratified gas-liquid flows. National Library of Canada, 1993.

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Ni, Pengfei. Chengdu cheng shi guo ji ying xiao zhan lue: Chuang zao tian yuan cheng shi de shi jie biao gan = Strategies of Chengdu's international city marketing. She hui ke xue wen xian chu ban she, 2010.

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Capsuto, Steven. Alternate channels: The uncensored story of gay and lesbian images on radio and television. Ballantine Books, 2000.

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Book chapters on the topic "Gas channels"

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Apollonov, Victor. "Interaction of an OPD with a Gas." In High-Conductivity Channels in Space. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02952-4_4.

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Zhdanov, V. M. "Kinetic Phenomena in the Rarefied Gas Mixtures Flowing Through Channels." In Rarefied Gas Dynamics. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2467-6_57.

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Jarinov, V. G. "Vacuum Ejectors with Appreciably Uneven Flows in Channels at Low Reynolds Numbers." In Rarefied Gas Dynamics. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2467-6_72.

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Alducin, Maite, Ricardo Díez Muiño, and J. Iñaki Juaristi. "Energy Dissipation Channels in Reactive and Non-reactive Scattering at Surfaces." In Dynamics of Gas-Surface Interactions. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32955-5_15.

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Horioka, K., H. Tamura, H. Kanazawa, and K. Kasuya. "Initiation Processes and Development of Laser-Induced Low-Pressure Spark Channels." In Gas Flow and Chemical Lasers. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71859-5_60.

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Dreyer, T. "Sand Body Dimensions and Infill Sequences of Stable, Humid-Climate Delta Plain Channels." In North Sea Oil and Gas Reservoirs—II. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0791-1_29.

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Chan, Tien Yin, Shun Tian Lin, Hua Jun Chang, and Chia Liang Chen. "Fabrication of Gas-Permeable Die Materials Having Orthogonally Arrayed Pore Channels." In Progress in Powder Metallurgy. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.961.

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Abdullah Auzer, Khazal. "Transmission Channels of the ‘Resource Curse’ Reappraised." In Institutional Design and Capacity to Enhance Effective Governance of Oil and Gas Wealth: The Case of Kurdistan Region. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4518-9_3.

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Lyamin, G. A., V. V. Mitrofanov, A. V. Pinaev, and V. A. Subbotin. "Propagation of Gas Explosion in Channels with Uneven Walls and in Porous Media." In Dynamic Structure of Detonation in Gaseous and Dispersed Media. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3548-1_3.

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Bandman, Olga. "A Lattice-Gas Model of Fluid Flow through Tortuous Channels of Hydrophilous and Hydrophobic Porous Materials." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03275-2_18.

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Conference papers on the topic "Gas channels"

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Ramireddy, Sivasankara Reddy, Siddappa Pallavagere Gurusiddappa, V. Kesavan, and S. Kishore Kumar. "Computational Study of Flow and Heat Transfer in Matrix Cooling Channels." In ASME 2014 Gas Turbine India Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gtindia2014-8252.

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A Numerical study of fluid flow, heat transfer and pressure drop in a stationary matrix cooling channel having an angle of 45 degrees for the three Reynolds numbers (24000&lt;Re&lt;60000) and four sub-channel aspect ratios (0.5&lt;W/H&lt;1.2) have been performed. This includes different shaped sub-channels such as Rectangular, U, and then two, three layered matrix combined with open and closed matrix channels. The simulation shows the development of vortices along the channel. The flow turning and impingement after hitting the side wall have significant contribution to the heat transfer enhanc
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Prajapati, Anjana N., and Andallib Tariq. "Detailed Heat Transfer Characteristics of Matrix Cooling Channels With Rib Angle 35° Using Liquid Crystal Thermography." In ASME 2019 Gas Turbine India Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gtindia2019-2551.

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Abstract Matrix cooling is relatively newer cooling technique and preferred over the conventional rib turbulators or pin fin cooling due to its capacity to provide the structural rigidity and higher heat transfer enhancement. The present investigation addresses the detailed study of local and averaged heat transfer augmentation distributions within the sub-channels of matrixes with rib angle 35° and varying sub-channels aspect ratios using liquid crystal thermography. The effects of varying sub-channel aspect ratios 1.2, 0.8 and 0.4 on averaged Nusselt number augmentation, friction factor rati
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Metzger, D. E., and M. K. Sahm. "Heat Transfer Around Sharp 180 Degree Turns in Smooth Rectangular Channels." In ASME 1985 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1985. http://dx.doi.org/10.1115/85-gt-122.

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Measured Nusselt numbers are presented for forced convection within and around sharp 180 degree turns in smooth channels of rectangular cross section. Separately determined top wall, bottom wall, and side wall values are presented individually along with azimuthal averages. The geometry of the channels and connecting turn is characterized by parameters W*, the ratio of upstream and downstream channel widths; D*, the non-dimensional channel depth; and H*, the non-dimensional clearance at the tip of the turn. Results from nine combinations of these parameters are presented at several values of c
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Xiong, Renqiang, and J. N. Chung. "Adiabatic Gas-Liquid Two-Phase Flow Patterns in Microchannels." In ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/fedsm2006-98476.

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Flow patterns of adiabatic gas-liquid two-phase flow in micro-channels were experimentally investigated. Using nitrogen and water, experiments were conducted in square micro-channels with hydraulic diameters of 0.209mm, 0.412mm and 0.622 mm, respectively. Gas and liquid superficial velocities were varied from 0.06–72.3 m/s and 0.02–7.13 m/s, respectively. Four defined flow patterns, bubbly-slug flow, slug-ring flow, dispersed-churn flow and annular flow, were observed in micro-channels of 0.412 mm and, 0.622 mm. In the micro-channel of 0.209 mm, the bubbly-slug flow became the slug-flow and th
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Xie, Chong. "Rarefied Gas Flows in Micro-Channels." In RAREFIED GAS DYNAMICS: 23rd International Symposium. AIP, 2003. http://dx.doi.org/10.1063/1.1581624.

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Han, J. C., P. R. Chandra, and S. C. Lau. "Local Heat/Mass Transfer Distribution Around Sharp 180 Degree Turn in MultiPass Rib-Roughened Channels." In ASME 1986 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1986. http://dx.doi.org/10.1115/86-gt-114.

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The detailed heat/mass transfer distributions in and around the sharp 180 degree turn of a three-pass square channel were determined by using the naphthalene sublimation technique. The top, bottom, inner (divider) and outer walls of the test channel were naphthalene plates. For the case of rib-roughened tests, the ribs of square cross section were glued periodically in-line on the top and bottom walls of the naphthalene channel in a required distribution. The rib height-to-hydraulic diameter ratios (e/D) were 0.063 and 0.094, whereas the rib pitch-to-height ratios (P/e) were 10 and 20, respect
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Aksenova, O. A. "Application of Nonlinear Dynamics Methods to Rarefied Gas Flows in Channels." In RAREFIED GAS DYNAMICS: 24th International Symposium on Rarefied Gas Dynamics. AIP, 2005. http://dx.doi.org/10.1063/1.1941542.

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Mayle, R. E. "Pressure Loss and Heat Transfer in Channels Roughened on Two Opposed Walls." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-86.

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In order to selectively increase cooling effectiveness, coolant channels in gas turbine components are often only roughened on one or two walls of the channel. A model is presented for flow in rectangular channels having two opposed roughened walls and a theory is developed for both the pressure loss and heat transfer. The theory allows one to calculate the heat transfer coefficient on each wall separately in addition to the overall friction factor and heat transfer coefficient. Comparisons are made to data for similarly configured channels, tubes and surfaces roughened by regularly spaced tra
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Parsons, J. A., J. C. Han, and C. P. Lee. "Rotation Effect on Jet Impingement Heat Transfer in Smooth Rectangular Channels With Four Heated Walls and Radially Outward Cross Flow." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-387.

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The effect of channel rotation on jet impingement cooling by arrays of circular jets in two channels was studied. Jet flow direction was in the direction of rotation in one channel and opposite to the rotation direction in the other channel. The jets impinged normally on two smooth target walls. Heat transfer results are presented for these two target walls, for the jet walls containing the jet producing orifices, and for side walls connecting the target and jet walls. The flow exited the channels in a single direction, radially outward, creating a cross flow on jets at larger radii. The mean
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Rensink, Dirk, Jo¨rg Roth, and Stephan Fell. "Liquid Water Transport and Distribution in Fibrous Porous Media and Gas Channels." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62087.

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In a polymer electrolyte membrane (PEM) fuel cell water is produced by electrochemical reactions in the catalyst layer on the cathode side. The water diffuses through the catalyst layer and a fibrous substrate into gas channels where it is transported away by convection. The fibrous substrate represents the gas diffusion media (GDM). Sometimes the GDM has a thin microporous layer on the side facing the catalyst layer. The same layer structure can be found on the anode side. All layers together are the porous layers of a PEM fuel cell. Under certain operating conditions condensation can occur i
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Reports on the topic "Gas channels"

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Gamezo, Vadim N., and Elaine S. Oran. Unidirectional Propagation of Gas Detonations in Channels with Sawtooth Walls. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada521201.

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Prosperetti, A., and W. N. Sharpe. A Fundamental Study of Gas and Vapor Bubble Dynamics in Micro-Channels. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada387423.

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Olson, Douglas A. Heat transfer in a compact heat exchanger containing rectangular channels and using helium gas. National Institute of Standards and Technology, 1991. http://dx.doi.org/10.6028/nist.ir.3959.

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Micheal Frenkel, Kenneth Kroenlein, V Diky, et al. Gas Hydrate Research Database and Web Dissemination Channel. Office of Scientific and Technical Information (OSTI), 2009. http://dx.doi.org/10.2172/1006283.

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Smith, James A., Casey J. Jesse, Clark L. Scott, and David L. Cottle. Channel Gap Probe EMPIrE Report. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1492033.

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Powell, Michael, Phillip Gauglitz, Kayte Denslow, et al. Evaluation of Gas Retention in Waste Simulants: Intermediate-Scale Column and Open-Channel-Depth Tests. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1149671.

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Cooper, Christopher, Jacob McDonald, and Eric Starkey. Wadeable stream habitat monitoring at Congaree National Park: 2018 baseline report. National Park Service, 2021. http://dx.doi.org/10.36967/nrr-2286621.

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The Southeast Coast Network (SECN) Wadeable Stream Habitat Monitoring Protocol collects data to give park resource managers insight into the status of and trends in stream and near-channel habitat conditions (McDonald et al. 2018a). Wadeable stream monitoring is currently implemented at the five SECN inland parks with wadeable streams. These parks include Horseshoe Bend National Military Park (HOBE), Kennesaw Mountain National Battlefield Park (KEMO), Ocmulgee Mounds National Historical Park (OCMU), Chattahoochee River National Recreation Area (CHAT), and Congaree National Park (CONG). Streams
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Emery, S. Kerberos Version 5 Generic Security Service Application Program Interface (GSS-API) Channel Binding Hash Agility. RFC Editor, 2012. http://dx.doi.org/10.17487/rfc6542.

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Ila, Daryush, E. K. Williams, R. L. Zimmerman, P. R. Ashley, and D. B. Poker. Fabrication of Optical Channel Waveguides in the GaAs/AlGaAs System by MeV Ion Beam Bombardment. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada379168.

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Zhou, Q., and Y. Morton. Precise GPS Signal Tracking in Interference and Multipath Environment Using a Multi-Channel Software Receiver. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada559186.

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