heat amp mass transfer in duct flow
brodkey, r. s. and hershey, h. c. - transport phenomena - a unified approach
... mechanical engineering series) in order to cover the specialized topics in heat transfer, such as radiation, boiling, and condensation Further topics in mass transfer can be taught in an additional ... topics: heat transfer, mass transfer, and momentum transfer (fluid flow) In many of the unit operations (such as distillation), all three transport phenomena (i.e., fluid flow, heat transfer, and mass ... driving force for fluid flow is a pressure difference For example, when the valve in a drinking fountain is opened, the water flows out in a jet because the water pressure inside the fountain...
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Báo cáo y học: "Mechanical characteristics of three staples commonly used in foot surgery" pps
... Figure Materials testing machine Materials testing machine Results Figure Deformation of construct on four point bending stress Deformation of construct on four point bending stress while the ... contributions UR the main author for the manuscript and was involved in specimen preparation, conducting the study, data acquisition and preparation of the manuscript JK was involved in setting up of equipment, ... stiffest in both bending and torsion stress There was a permanent deformation of the Richard staple on The strength of our study was that it was conducted in a uniform environment maintaining constant...
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Overtrawlability and mechanical damage of pipe in pipe
... 36 2.5 Pull-over Induced Lateral Buckling 45 2.6 Hooking 46 2.7 Existing Guidelines 47 v 2.7.1 Guidelines for Trenching Design of Submarine Pipelines (Trevor Jee Associates, ... Displacement of the pipe in the pull-over response xxv Bending strain Critical bending strain Pipeline usage factor , empirical factor in Ellinas and Walker’s formula Longitudinal compressive stress ... pull-over Central deflection at the point of impact xxvi CHAPTER 1 Introduction 1.1 Background In the very beginning, pipelines in the North Sea were all trenched Trenching is a very expensive way to...
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Báo cáo hóa học: "Molecular Dynamics Simulations of the Roller Nanoimprint Process: Adhesion and Other Mechanical Characteristics" pot
... imprint force in the loading period increased with imprint depth The effect of imprint depth was especially strong in the Z-component, as shown in Fig 6b The time at which the maximum imprint ... This indicates that the imprint depth dominates the magnitude of the maximum imprint force and the time when it happens In the unloading process, the adhesion increased as the imprint depth increased ... both films underwent loading The forming discrepancy can be explained by the different interaction forces Intra- and inter-chain forces are present in the polymer, so the chain molecules have complicated...
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09 Physical and Chemical Characteristics of DDGS revisions.
... vary from being very light yellow in color to being very dark brown in color Differences in color among DDGS sources are influenced by; • the natural color of the feedstock grain being used, • ... 42 gallons/minute As shown in Table 1, increasing solubles addition rate to the mash resulted in a decrease in L* (lightness of color) and b* (yellowness of color), with an increase in a* (redness ... will reduce mixing time in order to achieve a uniformly distributed mix of ingredients in a complete feed Amount of ingredient segregation during transport and handling – particle and ingredient...
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Báo cáo y học: "Mechanical behaviour of standardized, endoskeleton-including hip spacers implanted into composite femurs"
... femurs were inhttp://www.medsci.org Int J Med Sci 2009, clined 10° in the frontal plane and 9° in the sagittal plane and loaded using an INSTRON servo-hydraulic testing machine (Instron, Darmstadt, ... may be increased which increases the antibiotic elution as well [15] Anagnostakos et al [24] showed a considerably increase in elution of commercially added gentamicin for spacers containing a ... thus doubled the initial load 283 of non-reinforced spacers Thereby loads exceeding 5000 – 6000 N caused a non-linear displacement behaviour of the reinforced spacer and resulted into periprosthetic...
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Modeling the Statistical Time and Angle of Arrival Characteristics of an Indoor Multipath Channel
... close in angle Generalizing this line of reasoning, it follows that clustering in time is likely associated with some kind of clustering in angle The nature of the angular clustering of indoor ... principle of beamforming is that by adding the received signal from several antennas with appropriate amplitude scaling and phase shifting, gains in signal power and reduction in noise and interference ... antennas can be combined in various ways, including diversity combining, phased array processing, and adaptive array algorithms Adaptive array sytems are becoming increasingly feasible for high...
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Characteristics of hydrogen production from food waste and waste activated sludge
... Measurement of protein using bicinchoninic acid, Anal Biochem., 150, 76-85 Sparling, R., Risbey, D and Poggi-Varaldo, H M., 1997 Hydrogen production from inhibited anaerobic composters, Int J Hydrogen ... hydrogen production; fundamentals and limiting processes, Int J Hydrogen Energy, 27, 1185-1193 Han, S.-K and Shin, H.-S., 2002 Enhanced acidogenic fermentation of food waste in a continuous -flow reactor, ... sealed using open-top screw caps with rubber septum The bottles were then placed in a reciprocating shaker at 35oC and 100 rpm The biogas production was determined using a glass syringe of 20-200...
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Surface characteristics of acidogenic sludge in H2-producing process
... H2-producing sludge might also be a significant factor affecting the fermentative H2 production However, little information concerning the surface characteristics of H2-producing sludge in acidogenic ... Image of the anaerobic H2-producing sludge Experiment Fermentative H2 production experiments were conducted in a 5-L fermentor (Baoxin Biotech Ltd., China) An 1000-mL heat- treated seed sludge of ... rice winery wastewater in an upflow anaerobic reactor by using mixed anaerobic cultures Inter J Hydrogen Energy Vol.27, 1359-1365 Zheng, X J., Yu, H.Q (2004) The roles of pH in biologic production...
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Biological Alteration of Zinc Complexation Characteristics of Dissolved Organic Matter in Domestic Wastewater Treatment Plant Effluent under River Water Environment
... DOM in the original river water sample seems to fit into two linear portions indicating two classes of binding sites In contrast, DOMs in the samples after and weeks fitted to a single line, ... of zinc binding sites in river water DOM Fig represents the variation of DOC, UV254 and SUVA during the river water incubation for weeks in the preliminary study During the first days of incubation, ... signifying only one type of binding site It seems that the weak type of binding site in the river water DOM might have been degraded by biological activities On the other hand, total ambient binding...
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Evaluation of the Characteristics of Microorganisms that Contribute to Denitrification in the Paddy Drainage Treatment Apparatus by Quinone Composition Measurement
... or skills Thus, the quinone profiling has high affinity with analysts Moreover, quinone composition used in quinone profiling can achieve a qualitative evaluation of the biomass and biological ... Rice, and the planting rate was 0.30 m (ridge pitch) and 0.15 m (planting pitch) The paddling and transplanting were conducted on June and June 8, and the inundation began on June in 2007 A weir ... denitrification in paddies The arrangement of environmental factors of paddy, focusing on the Q-8 and other highly-contained-quinones, will lead to the finding of paddy characters accomplishing high...
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Characteristics of Leachate from Citrus Groves and their Changes in the Collecting Reservoirs in Matsuyama, Japan
... water samples were collected at the middle parts of the grove from points Sampling points St.1 and St.2 are in the same stream, and sampling point St.3 is in the other stream The two streams flow ... stream and the sampling point St.4 is situated in the joined stream, which is the only stream that flows into the reservoir The reservoir water was also sampled from point Po in the reservoir ... sample from several points in the study area are shown in Table Catchment area N St.3 Po Le.4 Le.1 Le.2 Le.3 St.1 St.2 St.4 100 (m) Leachate Stream Reservoir Fig.2 - Location of sampling points...
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Mechanical behaviour of PEM fuel cell catalyst layers during regular cell operation
... highly inhomogeneous Consequently, operating fuel cells are very often close to critical operating conditions, such as flooding and drying, at least locally [12] An operating fuel cell has varying ... thermal and swelling induced strains, respectively ISSN 2076-2895 (Print), ISSN 2076-2909 (Online) ©2010 International Energy & Environment Foundation All rights reserved 930 International Journal ... This model takes into account convection and diffusion of different species in the channels as well as in the porous gas diffusion layer, heat transfer in the solids as well as in the gases, and...
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Effect of unsaturated fatty acid esters of biodiesel fuels on combustion, performance and emission characteristics of a DI diesel engine
... A Gopinath has completed master of engineering in internal combustion engineering with gold medal from College of Engineering, Guindy, Anna University Chennai, Chennai, Tamilnadu, India in 2008 ... fuels in a fully instrumented, single cylinder, direct injection diesel engine A series of tests were conducted using different biodiesel fuel, with the engine working at 1500 r.p.m The following ... advance in injection timing due to fuel compressibility could lead to a longer premixed burning phase and an increase in the production of NOX [15] The advance in injection timming was further investigated...
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Adsorption characteristics of Ni2+ ion onto the diethylenetriaminepentaacetic acid-melamine / polyvinylidene fluoride blended resin
... majoring in environmental engineering in Yanshan University Wastewater treatment is her current study interest E-mail address: wutingying_1983@sina.com Ying Qin: an undergraduate majoring in environmental ... IR-118H resin J Applied Radiation and Isotopes 2003, 58(2), 155-160 Xiaodan Zhao: a post graduate majoring in environmental engineering in Yanshan University situated in Qinhuangdao, China Wastewater ... 272-280 [35] Bering B.P., Dubinin M.M, Serpinsky V.V On thermodynamics of adsorption in micropores J Colloid and Interface Science 1972, 38(1), 185-194 [36] Mohan D., Singh K.P Single- and multi-component...
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Bài giảng Chapter 7 The Quantum-Mechanical Model of the Atom
... Uncertainty Principle h ∆x × ∆v ≥ 4π 1 m • Heisenberg stated that the product of the uncertainties in both the position and speed of a particle was inversely proportional to its mass ... Approach 21 Interference • the interaction between waves is called interference • when waves interact so that they add to make a larger wave it is called constructive interference waves are in- phase ... damage biological molecules ionizing radiation Tro, Chemistry: A Molecular Approach 19 Thermal Imaging using Infrared Light Tro, Chemistry: A Molecular Approach 20 Using High Energy Radiation to...
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Tài liệu Module 3: Characteristics of Information docx
... Module 7: Presenting Information Module 2: Identifying Business Processes, Challenges, and Vision Module 6: Analyzing Information: Rationalizing Information Gathering and Analyzing Business Requirements ... Module 7: Presenting Information Module 6: Analyzing Information: Rationalizing Information Module 1: Course Overview Gathering and Analyzing Business Requirements Module 5: Analyzing Information: ... that you ascertain from information in the business, application, and information categories establish the constraints for evaluating and adopting new technologies You can use this information to...
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Tài liệu Mechanical Properties of Engineered Materials P2 pptx
... plane of atoms (intrinsic stacking faults) or the insertion of rows of atoms that disturb the arrangement of atoms (extrinsic stacking faults) Intrinsic and extrinsic stacking faults are illustrated ... described using the concept of coincident site lattices For example, a Æ ¼ or Copyright © 2003 Marcel Dekker, Inc ÆÀ1 ¼ 1=5 boundary is one in which in of the grain boundary atoms match, as shown in ... Dekker, Inc FIGURE 2.8 Examples of surface defects: (a) low-angle tilt boundary; (b) highangle tilt boundary; (c) S ¼ boundary; (d) twin boundary; (e) intrinsic stacking fault; (f) extrinsic stacking...
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Tài liệu Mechanical Properties of Engineered Materials P1 pptx
... Blunting Crack Deflection Twin Toughening Crack Trapping Microcrack Shielding/Antishielding Linear Superposition Concept Synergistic Toughening Concept Toughening of Polymers Summary and Concluding ... Visiting Martin Luther King Professor in the departments of Materials Science and Engineering and Mechanical Engineering at MIT The sabbatical year (1997–1998) at MIT provided me with a stimulating ... Bibliography Introduction Reasons for Elastic Behavior Introduction to Linear Elasticity Theory of Elasticity Introduction to Tensor Notation Generalized Form of Linear Elasticity Strain Energy...
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Tài liệu Characteristics of IREDs pptx
... efficient infinite heat sink is used, to a minimum, for the case where no heat sink is present There is only a 4% decrease in the amount of light generated by the IRED when a heat sink is used ... clear example of the law of diminishing returns: increasing the forward drive current will increase the amount of light generated by the IRED However, increasing the drive current also increases ... The maximum power dissipation rating of a semiconductor device defines that operating region where overheating can damage the device There is an 11% decrease in the amount of light generated...
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