Academic literature on the topic 'Vapour generated time'

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Journal articles on the topic "Vapour generated time"

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U.Ramya, Sri, A.Rama Krishna Prof, and Kumar T.Naveen. "NUMERICAL INVESTIGATION OF NUCLEATE BOILING HEAT TRANSFER ON THIN SUBSTRATES UNDER THE INFLUENCE OF SURFACE ROUGHNESS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 3 (2016): 302–9. https://doi.org/10.5281/zenodo.47042.

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The effect of surface roughness on nucleate boiling heat transfer is analytically explored over a wide range of roughness values in water and Flourinent FC-77,two fluids with different thermal poperties and wetting characteristics.The test surfaces ranged from a polished surface of 0.045μm to 10.5μm.Different trends were observed in the heat transfer coefficient ,percentage of vapour and Vapour generated time with respect to surface roughness between the two fluids on the same set of surfaces.For FC-77,the percentage of vapour developed was increased continually with increasing roughness
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Watt, Lewis, Zoe Leinhardt, and Kate Y. L. Su. "Planetary embryo collisions and the wiggly nature of extreme debris discs." Monthly Notices of the Royal Astronomical Society 502, no. 2 (2021): 2984–3002. http://dx.doi.org/10.1093/mnras/stab106.

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ABSTRACT In this paper, we present results from a multistage numerical campaign to begin to explain and determine why extreme debris disc detections are rare, what types of impacts will result in extreme debris discs and what we can learn about the parameters of the collision from the extreme debris discs. We begin by simulating many giant impacts using a smoothed particle hydrodynamical code with tabulated equations of state and track the escaping vapour from the collision. Using an N-body code, we simulate the spatial evolution of the vapour generated dust post-impact. We show that impacts r
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Schieferdecker, T., S. Lossow, G. P. Stiller, and T. von Clarmann. "A solar signal in lower stratospheric water vapour?" Atmospheric Chemistry and Physics Discussions 15, no. 8 (2015): 12353–87. http://dx.doi.org/10.5194/acpd-15-12353-2015.

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Abstract. A merged time series of stratospheric water vapour built from HALOE and MIPAS data between 60° S and 60° N and 15 to 30 km and covering the years 1992 to 2012 was analyzed by multivariate linear regression including an 11 year solar cycle proxy. Lower stratospheric water vapour was found to reveal a phase-shifted anti-correlation with the solar cycle, with lowest water vapour after solar maximum. The phase shift is composed of an inherent constant time lag of about 2 years and a second component following the stratospheric age of air. The amplitudes of the water vapour response are l
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Schieferdecker, T., S. Lossow, G. P. Stiller, and T. von Clarmann. "Is there a solar signal in lower stratospheric water vapour?" Atmospheric Chemistry and Physics 15, no. 17 (2015): 9851–63. http://dx.doi.org/10.5194/acp-15-9851-2015.

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Abstract. A merged time series of stratospheric water vapour built from the Halogen Occultation Instrument (HALOE) and the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) data between 60° S and 60° N and 15 to 30 km and covering the years 1992 to 2012 was analysed by multivariate linear regression, including an 11-year solar cycle proxy. Lower stratospheric water vapour was found to reveal a phase-shifted anti-correlation with the solar cycle, with lowest water vapour after solar maximum. The phase shift is composed of an inherent constant time lag of about 2 years and a seco
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Lee, Keun-Ok, Thibaut Dauhut, Jean-Pierre Chaboureau, Sergey Khaykin, Martina Krämer, and Christian Rolf. "Convective hydration in the tropical tropopause layer during the StratoClim aircraft campaign: pathway of an observed hydration patch." Atmospheric Chemistry and Physics 19, no. 18 (2019): 11803–20. http://dx.doi.org/10.5194/acp-19-11803-2019.

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Abstract. The source and pathway of the hydration patch in the TTL (tropical tropopause layer) that was measured during the Stratospheric and upper tropospheric processes for better climate predictions (StratoClim) field campaign during the Asian summer monsoon in 2017 and its connection to convective overshoots are investigated. During flight no. 7, two remarkable layers are measured in the TTL, namely (1) the moist layer (ML) with a water vapour content of 4.8–5.7 ppmv in altitudes of 18–19 km in the lower stratosphere and (2) the ice layer (IL) with ice content up to 1.9 eq. ppmv (equivalen
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Hannaford, P., and RM Lowe. "Some Recent Developments in Atomic Lifetime Determinations." Australian Journal of Physics 39, no. 5 (1986): 829. http://dx.doi.org/10.1071/ph860829.

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A lifetimes technique that is readily applicable to neutral and singly ionised atoms of a wide range of elements, including the highly refractory elements, is reviewed. With this technique an atomic vapour of the element under study is generated by cathodic sputtering in a low pressure rare-gas discharge and fluorescence decay signals emitted by the vapour following pulsed laser excitation are recorded directly in a fast transient digitiser. Theoretical expressions are presented for the form of the time-resolved fluor~scence signal appropriate to the collisional environment of a rare-gas sputt
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Ruiz González, Ana Daría, Jose Antonio Vega Hidalgo, and Juan Gabriel Álvarez González. "Construction of empirical models for predicting Pinus sp. dead fine fuel moisture in NW Spain. I: Response to changes in temperature and relative humidity." International Journal of Wildland Fire 18, no. 1 (2009): 71. http://dx.doi.org/10.1071/wf07101.

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A statistical methodology is presented for developing moisture content models from repeated measurements made on non-destructive repeated measurements. Empirical vapour exchange models for dead fine fuels generated in Pinus radiata and P. pinaster stands are developed by using the methodology proposed. Experiments were carried out with five types of fuel particles (surface and aerial fine fuels) of the two species of pine, in Lugo (Galicia, north-west Spain). The samples of each fuel type were collected and placed inside an instrument shelter so that vapour exchange with the atmosphere was the
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Smith, Jacob W., Peter H. Haynes, Amanda C. Maycock, Neal Butchart, and Andrew C. Bushell. "Sensitivity of stratospheric water vapour to variability in tropical tropopause temperatures and large-scale transport." Atmospheric Chemistry and Physics 21, no. 4 (2021): 2469–89. http://dx.doi.org/10.5194/acp-21-2469-2021.

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Abstract. Concentrations of water vapour entering the tropical lower stratosphere are primarily determined by conditions that air parcels encounter as they are transported through the tropical tropopause layer (TTL). Here we quantify the relative roles of variations in TTL temperatures and transport in determining seasonal and interannual variations of stratospheric water vapour. Following previous studies, we use trajectory calculations with the water vapour concentration set by the Lagrangian dry point (LDP) along trajectories. To assess the separate roles of transport and temperatures, the
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Hussein, M. Z., S. A. Zakarya, S. H. Sarijo, and Z. Zainal. "Parameter Optimisation of Carbon Nanotubes Synthesis via Hexane Decomposition over Minerals Generated fromAnadara granosaShells as the Catalyst Support." Journal of Nanomaterials 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/525616.

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The synthesis of carbon nanotubes (CNTs) by the chemical vapour deposition (CVD) method using natural calcite fromAnadara granosashells as the metal catalyst support was studied. Hexane and iron (Fe) were used as the carbon precursor and the active component of the catalyst, respectively. Response surface methodology (RSM) based on central composite design (CCD) was used to optimise the effect of total iron loading, the duration of reaction, and reaction temperature. The optimal conditions were total iron loading of 7.5%, a reaction time of 45 min, and a temperature of 850°C with a resulting c
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Brenot, H., J. Neméghaire, L. Delobbe, et al. "Preliminary signs of the initiation of deep convection by GNSS." Atmospheric Chemistry and Physics 13, no. 11 (2013): 5425–49. http://dx.doi.org/10.5194/acp-13-5425-2013.

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Abstract. This study reports on the exploitation of GNSS (Global Navigation Satellite System) and a new potential application for weather forecasts and nowcasting. We focus on GPS observations (post-processing with a time resolution of 5 and 15 min and fast calculations with a time resolution of 5 min) and try to establish typical configurations of the water vapour field which characterise convective systems and particularly which supply precursors of their initiation are associated with deep convection. We show the critical role of GNSS horizontal gradients of the water vapour content to dete
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Book chapters on the topic "Vapour generated time"

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Masood, Ghazi Mohd, and Onkar Singh. "Exergo-Economic Study of a Solar PDC-Based Vapour Absorption Air Conditioning System." In Advances in Chemical and Materials Engineering. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-2798-2.ch007.

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The ambient temperature is increasing as a consequence of global warming, requiring increased usage of air conditioning. The availability of solar energy and its use for air conditioning systems seems to be a possible solution in such circumstances to some degree. Thermodynamic study of a parabolic dish-based air conditioning system using a vapour absorption refrigeration cycle with H2O and LiBr as a working fluid is presented in this article. Exergy destruction in different components of the cooling arrangement, such as the generator, absorber, condenser, and evaporater, is assessed using the
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Bararzadeh Ledari, Masoumeh, and Reza Bararzadeh Ledari. "Nature as a Teacher for Abiota Self-Organization in Terms of Entropy Analysis." In Exergy - New Technologies and Applications [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109817.

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In this chapter, the various terms of entropy generation in terrestrial systems and the atmosphere are estimated by imitating the entropy analysis of a steam power generation (STPG). The highest entropy generation is associated with the outgoing longwave radiation flux (more than 20–200 times the downward solar radiation). The results indicate that the most significant terms of entropy generation (heat dissipation) in different processes are related to latent and sensible heat fluxes (similar to steam generation and flue gas of the STPG). The vegetation cover (boiler system) destroys a part of
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Avery, William H., and Chih Wu. "Open-Cycle OTEC." In Renewable Energy from the Ocean. Oxford University Press, 1994. http://dx.doi.org/10.1093/oso/9780195071993.003.0012.

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The historical development leading to the proposal by Claude to generate power by producing steam in flash evaporation of warm seawater has been discussed in Chapter 2. In this chapter, the thermodynamic fundamentals of the open-cycle concepts are discussed, leading to a detailed review of state of the art and commercial prospects of the process. There are several variations on the standard OTEC open-cycle (OC) system. The three major variations are “hybrid cycle” (Bartone, 1978), “mist lift cycle” (Ridgway, 1977), and “foam lift cycle” (Beck, 1975; Zener et al., 1975). These are advanced conc
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"GAMMA-MRI: Revolutionizing medical imaging with radioactive hyperpolarized xenon." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.19.7.

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Introduction: GAMMA-MRI aims to bring innovation in clinical molecular imaging by developing a new imaging modality based on the physical principle of anisotropic gamma emission from hyperpolarized isomers of xenon. To mitigate the low signal detection sensitivity of MRI, a radioactive gamma-emitting isotope is used as a contrast agent, with gamma energy comparable to that of 99mTc (Eγ=140 keV), a widely used medical radioisotope in nuclear medicine imaging techniques. Methods: The GAMMA-MRI relies on detecting the asymmetric gamma emission from long-lived isomers of a radioactive noble gas nu
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Conference papers on the topic "Vapour generated time"

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Barber, Miriam, Adedamola Adelusi, and Stefano Tassinari. "The Impact of Oxygen Related Black Solids in Oil and Gas Production Systems." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-18942.

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Abstract The presence of black solids in oil and gas pipelines can lead to major flow assurance issues as solids build up over time within a production application. This paper describes two real-case studies used to identify the dominant mechanisms involved during black solids formation in production applications. A systematic field-based audit was used as a key tool in identifying the source of oxygen (O2) into the production applications. This approach considers field operational parameters, corrosion side-stream monitoring data and in-situ generated data to identify the source of integrity
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Massinon, D., and D. Thierry. "Rate Controlling Factors in the Cosmetic Corrosion of Coated Steels." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91574.

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Abstract Cosmetic corrosion can usually be distinguished from perforating corrosion by the fact that the later occurs from the inside of the car body whereas the former occurs from the outside. Both initiate from local defects in the paint generated by chips or mechanical damage caused to the paint. However, the thickness and nature of the paint film are completely different from one side to the other. Also, it has been shown that a difference in film thickness can generate two types of corrosion mechanisms. It is likely that the kinetics of the degradation process are depending upon the prese
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Reed, D. T. "Corrosion of Copper-Based Materials in Gamma-Irradiated Air/Water Vapor Systems." In CORROSION 1992. NACE International, 1992. https://doi.org/10.5006/c1992-92474.

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Abstract Experiments were performed to investigate the atmospheric corrosion of copper-based materials in an irradiated air/water vapor system. The three materials investigated were oxygen-free copper (CDA-102), 7% aluminum-bronze (CDD-613), and 70-30 cupronickel (CDA-715). To support the corrosion studies, a number of irradiation studies were performed to characterize the gas phase radiation chemistry of the system. Both copper oxide and nitrate phases were identified as corrosion products depending on the dose rate, humidity and temperature. Uniform corrosion rates increased with temperature
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Gjertsen, Sondre Borg, Attila Palencsár, and Tor Hemmingsen. "Investigation of MEG-Water Co-Condensation by In-Situ Refractometry." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19285.

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Abstract Top-of-line corrosion (TLC) in carbon steel pipelines carrying moist gas is caused by the condensation of water in the presence of CO2 and is difficult and expensive to mitigate. Modeling TLC allows operators to plan mitigation strategies that may reduce costs and production delays. The TLC rate is proportional to the rate of condensation and is affected by the solubility of the corrosion products. When Mono-Ethylene Glycol (MEG) is present, it evaporates and condenses with the water. Depending on mass transport rates, the gas phase may get depleted of MEG. Equilibrium calculations ma
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Gaines, Cory, Elvin Sepanosian, Obed Villalpando, Sutine Sujittosakul, and Vilupanur A. Ravi. "Diffusion Model of Aluminide Coatings." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07840.

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Abstract The deleterious effects of corrosion can be mitigated by the application of coatings that can form a protective oxide layer. Halide Activated Pack Cementation (HAPC) is one such coating method in which a halide vapor is generated within a pack and undergoes reactions that ultimately result in the coating element, e.g., Al, being deposited and diffused into the substrate. In this study, the solid state diffusion of aluminum into stainless steel substrates was modeled using a popular computing environment. UNS S30400 austenitic stainless steel was aluminized for various times at 850°C.
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Tang, Chao, Koichi Tamura, Aoi Hamada, et al. "A fast and sensitive THz rectenna detector working with zero-bias based on the 2D Dirac-Semimetal/Insulator heterostructure." In JSAP-Optica Joint Symposia. Optica Publishing Group, 2024. https://doi.org/10.1364/jsapo.2024.18p_b2_3.

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In this study, we developed a fast and sensitive terahertz (THz) detector using a Bi2Se3/h-BN heterostructure rectenna that enables detection without a cathode-anode bias. The fabrication process involved synthesizing β-Bi2Se3 via vapor-controlled liquid phase growth and h-BN via chemical vapor deposition [1]. The Bi2Se3 flake were cleaved and transferred onto a Si/SiO2 substrate, followed by the deposition of anode electrodes and the hot transfer method to stack an h-BN flake, completing the fabrication with cathode and anode electrodes and a bow-tie antenna with metal pads. For THz detection
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Vaičaitis, V., A. Stabinis, and A. Piskarskas. "The four-photon parametric superfluorescence induced by conical pump pulses in sodium vapour." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cthh37.

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The investigations of parametric interactions under the conically focused pump beams are of broad interest mainly due to the possibility of efficient modification of the generated radiation divergence [1] significantly improving it’s spatial and time coherence.
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Braganza, Giselle, and Joel Gomes. "Effective Method for Decontamination of Compromised Slug Catcher: Case Study." In Middle East Oil, Gas and Geosciences Show. SPE, 2023. http://dx.doi.org/10.2118/213530-ms.

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Abstract This paper describes a vapour phase method for cleaning and decontamination of a slug catcher in a gas processing plant. Corrosion and heavy metal losses required the slug catchers to be replaced. Safe decommissioning demanded the elimination of H2S, LEL and pyrophoric iron. Compromised integrity made traditional cleaning methods like circulation or pressure jetting unfeasible. The proposed method significantly reduced decontamination times and the associated effluent. The vapour phase method using degassing chemicals entrained in steam lowered H2S and LEL levels to substantially zero
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Smith, F. T., and J. Forsyth. "In-Situ Generated Acid Stimulation for Productivity Enhancement – A North Sea Case Study." In GOTECH. SPE, 2024. http://dx.doi.org/10.2118/219262-ms.

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Abstract A new approach to acidizing gas wells where an inert dry chemical hermetically was sealed inside a metal carrier and deployed downhole via slick-e-line. Once in place downhole, an exothermic chemical reaction was initiated which produces hot acid vapour. This method permits target acid placement in a heated vapour form. The well was a depleted deviated gas well in a sandstone reservoir at approximately 15000 ft MD with 4 1/2" tubing. Three unique intervals were treated using 5 runs using a combination of HCl and Mud Acid (12:3 HCl/HF mixtures). Post-treatment, the production and opera
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Smith, F. T., J. Forsyth, D. Pennington, I. Hadziavdic, and J. Brennan. "In-Situ Generated Acid Stimulation for Productivity Enhancement – A North Sea Case Study." In GOTECH. SPE, 2025. https://doi.org/10.2118/224767-ms.

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Abstract A new approach to acidizing gas wells where an inert dry chemical hermetically was sealed inside a metal carrier and deployed downhole via slick-e-line. Once in place downhole, an exothermic chemical reaction was initiated which produces hot acid vapour. This method permits target acid placement in a heated vapour form. The well was a depleted deviated gas well in a sandstone reservoir at approximately 15000 ft MD with 4 1/2" tubing. Three unique intervals were treated using 5 runs using a combination of HCl and Mud Acid (12:3 HCl/HF mixtures). Post-treatment, the production and opera
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Reports on the topic "Vapour generated time"

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Vanderkooy and McAlary. PR-445-133727-R01 Vapor Plume Detection - Report Compilation and Summary. Pipeline Research Council International, Inc. (PRCI), 2015. http://dx.doi.org/10.55274/r0010835.

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Detecting small leaks of liquid hydrocarbons from underground pipelines is difficult using currently available techniques. Hundreds of thousands of miles of aging pipelines run through North America alone and the incidence of small leaks is expected to increase as time goes on. This research was aimed at evaluating two alternative methods for leak detection: 1) monitoring petroleum hydrocarbon (PHC) vapors at or above ground surface over the leaked product, or 2) using plants as visual sensors to indicate the presence of a leak below. Four reports were generated, including: 1) mathematical mod
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