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Letteratura scientifica selezionata sul tema "Seawater – Analysis"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 30 gennaio 2023

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Articoli di riviste sul tema "Seawater – Analysis"

1

Crompton, T. R., e P. J. Worsfold. "Analysis of seawater". Analytica Chimica Acta 237 (1990): 510. http://dx.doi.org/10.1016/s0003-2670(00)83958-6.

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2

Yao, Wensheng, e Robert H. Byrne. "Simplified seawater alkalinity analysis". Deep Sea Research Part I: Oceanographic Research Papers 45, n. 8 (agosto 1998): 1383–92. http://dx.doi.org/10.1016/s0967-0637(98)00018-1.

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3

Wangersky, PeterJ. "Methods of seawater analysis". TrAC Trends in Analytical Chemistry 4, n. 1 (gennaio 1985): xx. http://dx.doi.org/10.1016/0165-9936(85)80011-x.

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4

Wang, Shu Xun, Ying Xia Miao, Jian An Hao, Jing Wang e Yu Shan Zhang. "Analysis on the Technological Advantages of Domestic Seawater". Applied Mechanics and Materials 737 (marzo 2015): 692–95. http://dx.doi.org/10.4028/www.scientific.net/amm.737.692.

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The principle of domestic seawater technology is to replace fresh water by seawater. This paper introduces the features and demonstration scale of domestic seawater technology. Considering the successful seawater toilet-flushing in Hong Kong, comparison and economic analysis on the cases of seawater, recycled water and tap water are done. The result shows domestic seawater technology is an economical and efficient water saving technology.

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5

He, Yuntao, Yongjun Liu, Chang Liu e Duan Li. "Analysis of Transmission Depth and Photon Number in Monte Carlo Simulation for Underwater Laser Transmission". Remote Sensing 14, n. 11 (27 maggio 2022): 2565. http://dx.doi.org/10.3390/rs14112565.

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The modeling of laser transmission characteristics in complex seawater is fundamental for bathymetric and oceanographic laser detection systems. Because the factors affecting laser transmission in seawater are independent of one another, firstly, in this paper, a Monte Carlo model of laser propagation in seawaters with suspended matter was established to study the influence of suspended matter with specific radius on the underwater laser transmission. Secondly, the influence of transmission depth and the number of photons on the laser extinction coefficients of seawater containing different concentrations of suspended matter were analyzed, respectively. Thirdly, the relationships between maximum transmission depth, the number of initial photons, and the concentrations were built and verified by simulations. Lastly, an experimental platform was set up and experiments were carried out to verify the Monte Carlo model and the relationships. Results show that (1) both the minimum initial photon number and maximum transmission depth depend exponentially on the concentrations of the suspended matter; (2) the extinction coefficients obtained by the Monte Carlo model and those obtained by experiments are consistent. The absolute values of the differences are less than 0.028 m−1, implying that (1) the proposed Monte Carlo model is effective for simulating laser propagation in seawaters with suspended matter; (2) the established relationships between maximum transmission depth, the minimum initial photon number, and the concentrations of suspended matter have better accuracies, which are valuable for the simulations on attenuation of laser transmission in seawater. The method of this paper can also be extended to the study of suspended solids with other radii and improve the simulation accuracy and decrease simulation time consumption.

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6

Xu, Zexuan, Bill X. Hu e Ming Ye. "Numerical modeling and sensitivity analysis of seawater intrusion in a dual-permeability coastal karst aquifer with conduit networks". Hydrology and Earth System Sciences 22, n. 1 (12 gennaio 2018): 221–39. http://dx.doi.org/10.5194/hess-22-221-2018.

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Abstract. Long-distance seawater intrusion has been widely observed through the subsurface conduit system in coastal karst aquifers as a source of groundwater contaminant. In this study, seawater intrusion in a dual-permeability karst aquifer with conduit networks is studied by the two-dimensional density-dependent flow and transport SEAWAT model. Local and global sensitivity analyses are used to evaluate the impacts of boundary conditions and hydrological characteristics on modeling seawater intrusion in a karst aquifer, including hydraulic conductivity, effective porosity, specific storage, and dispersivity of the conduit network and of the porous medium. The local sensitivity analysis evaluates the parameters' sensitivities for modeling seawater intrusion, specifically in the Woodville Karst Plain (WKP). A more comprehensive interpretation of parameter sensitivities, including the nonlinear relationship between simulations and parameters, and/or parameter interactions, is addressed in the global sensitivity analysis. The conduit parameters and boundary conditions are important to the simulations in the porous medium because of the dynamical exchanges between the two systems. The sensitivity study indicates that salinity and head simulations in the karst features, such as the conduit system and submarine springs, are critical for understanding seawater intrusion in a coastal karst aquifer. The evaluation of hydraulic conductivity sensitivity in the continuum SEAWAT model may be biased since the conduit flow velocity is not accurately calculated by Darcy's equation as a function of head difference and hydraulic conductivity. In addition, dispersivity is no longer an important parameter in an advection-dominated karst aquifer with a conduit system, compared to the sensitivity results in a porous medium aquifer. In the end, the extents of seawater intrusion are quantitatively evaluated and measured under different scenarios with the variabilities of important parameters identified from sensitivity results, including salinity at the submarine spring with rainfall recharge, sea level rise, and a longer simulation time under an extended low rainfall period.

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Qi, Xiao Ni. "Performance Analysis of Seawater Cooling Tower". Applied Mechanics and Materials 182-183 (giugno 2012): 598–601. http://dx.doi.org/10.4028/www.scientific.net/amm.182-183.598.

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Due to salt deposition on the packing and subsequent airflow block, thermal performance of the tower declines after a period of time. Eliminating the fill makes the tower fully empty which is of far-reaching significance in circulating seawater with high temperature, high turbidity. Application of PCTs to industry is not practical due to salt deposition on the packing and subsequent blockage. Analysis of seawater characteristics main includes temperature, salinity, density, specific heat and other properties, which is of great significance in the seawater cooling performance. The results provide necessary theoretical bases for the extensive application of seawater cycling and cooling technology, and at the same time lay foundation for the design of seawater cooling tower.

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Pawlowicz, R., D. G. Wright e F. J. Millero. "The effects of biogeochemical processes on oceanic conductivity/salinity/density relationships and the characterization of real seawater". Ocean Science 7, n. 3 (1 giugno 2011): 363–87. http://dx.doi.org/10.5194/os-7-363-2011.

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Abstract. As seawater circulates through the global ocean, its relative composition undergoes small variations. This results in changes to the conductivity/salinity/density relationship, which is currently well-defined only for Standard Seawater obtained from a particular area in the North Atlantic. These changes are investigated here by analysis of laboratory experiments in which salts are added to seawater, by analysis of oceanic observations of density and composition anomalies, and by mathematical investigation using a model relating composition, conductivity, and density of arbitrary seawaters. Mathematical analysis shows that understanding and describing the effect of changes in relative composition on operational estimates of salinity using the Practical Salinity Scale 1978 and on density using an equation of state for Standard Seawater require the use of a number of different salinity variables and a family of haline contraction coefficients. These salinity variables include an absolute Salinity SAsoln, a density salinity SAdens, the reference salinity SR, and an added-mass salinity SAadd. In addition, a new salinity variable S∗ is defined, which represents the preformed salinity of a Standard Seawater component of real seawater to which biogeochemical processes add material. In spite of this complexity, observed correlations between different ocean biogeochemical processes allow the creation of simple formulas that can be used to convert between the different salinity and density measures, allowing for the operational reduction of routine oceanographic observations.

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9

Sugio, Satora, Kinya Nakada e Daniel W. Urish. "Subsurface Seawater Intrusion Barrier Analysis". Journal of Hydraulic Engineering 113, n. 6 (giugno 1987): 767–79. http://dx.doi.org/10.1061/(asce)0733-9429(1987)113:6(767).

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10

Koide, Min, Edward D. Goldberg e Richard Walker. "The analysis of seawater osmium". Deep Sea Research Part II: Topical Studies in Oceanography 43, n. 1 (gennaio 1996): 53–55. http://dx.doi.org/10.1016/0967-0645(95)00082-8.

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Tesi sul tema "Seawater – Analysis"

1

Woodhouse, Oliver Brian. "Osmium in seawater : analysis and geochemistry". Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284676.

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2

Quigley, M. N. "Co-precipitation and flameless A.A.S. studies in seawater analysis". Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372136.

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3

Colombo, Carlo Maurizio. "Flow analysis of trace metals in seawater by voltammetry". Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338581.

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4

Bin, Marshad Saud Mohammed H. "Economic evaluation of seawater desalination : a case study analysis of cost of water production from seawater desalination in Saudi Arabia". Thesis, Heriot-Watt University, 2014. http://hdl.handle.net/10399/2996.

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As a result of the increasing scarcity of freshwater resources worldwide, many countries have resorted to the use of unconventional sources, of which seawater desalination is the most significant, for meeting the supply-demand gap. However, despite the recorded advances in desalination technologies of recent decades, desalination remains a very expensive operation and operators will be greatly assisted if reliable means of predicting the costs are available to aid effective decision making during planning of new plants or the operation of existing plants. To achieve this, it is important to fully understand the factors that contribute to desalination costs, which could then be used to develop appropriate models for predicting costs that can support budgeting and/or cost reductions decision making. Consequently, this project has investigated the development of such models for predicting monthly production costs using data from 16 operational plants in Saudi Arabia. Monthly and annual data spanning 2001 – 2010 were collected on total water production, type of desalination technique, sea water salinity, product water salinity, energy consumption, and total (capital and operational) unit cost of water production. Because of the way in which the data were archived, some of the variables only had the annual totals for some of the years, which made them unsuitable for the monthly scale adopted for the analyses. Consequently, disaggregation schemes based on several variants of the method of fragments widely used in hydrological studies were used to obtain monthly data from the annual data. Exploratory analysis showed that the monthly costs correlated most with the total water production, which then formed the lone independent variable for various tested regression model formulations. In general, an inverse regression model performed best during both calibration and validation. To enhance the usefulness of the predictive model for decision making, uncertainty limits of the predictions were constructed using a Monte Carlo simulation approach involving the seasonal, lag-1 autoregressive generation of equally likely realisations of the available historic records that have been transformed to remove the skewness. Extensive testing of the data generation technique showed that the assumed lag-1 auto-regressive dependence structure was adequate. This study thus provides for the first time a predictive model for costs of desalination in Saudi Arabia and its uncertainty range for effective budgeting and operational management. Although the models were developed using Saudi Arabia data, the fact that only one independent variable was used means that the replication of the methodology in other desalination-intensive countries can be readily carried out.

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Mohamed, Hassan S. B. Massachusetts Institute of Technology. "A numerical analysis of condenser performance of a seawater desalination system". Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/54517.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 31).
This thesis presents the numerical analysis of three type condensers for desalination of seawater system. The condensers that were analyzed were a finned tube condenser that was built in Malaysia desalination plant, a cooling tube condenser in Jordan, and a common plate finned tube condenser. The goal of the analysis is to observe the thermal performance parameters of a condenser such as heat and mass transfer coefficient, surface effectiveness and condensate flow rate. The parameters that were changed in the analysis were the face velocity of air, the water velocity, and the number of rows of tubes. The numerical analysis was done based on basic heat exchanger analysis using e-NTU method for a dry case, and using a j-factor correlation that was developed by McQuiston for studying the wet case. Results from the basic heat exchanger analysis showed the air humidity ratio profile and temperature profile of air and water at the outlet of the condenser. The exit air temperature and humidity ratio were inversely proportional to the length of the condenser, whereas the temperature of the water at the outlet was proportional to the length of the condenser. Results from the j-factor correlation method show that the heat and mass transfer coefficient of the system increased when the number of rows of tubes, face velocity and water velocity increased. Similarly, the analysis showed that the condensate flow rate was highly influenced by the face velocity. In addition, the surface effectiveness was inversely proportional to the face velocity.
by Hassan Mohamed.
S.B.

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6

Tappin, Alan David. "Studies of trace metals in shelf waters of the British Isles". Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330182.

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7

Couture, Estelle. "Chlorate and chlorite analysis in seawater, chlorate sinks, and toxicity to phytoplankton". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0023/MQ36420.pdf.

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8

Al-Rashidi, Thamer Badi. "An analysis of drivers of seawater temperature in Kuwait Bay, Arabian Gulf". Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/145867/.

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Kuwait Bay presents a unique ecosystem and a significant nursery ground for many fish and shrimp species. In the last three decades, the bay has been under pressure from urbanization as well as from development from the entire region of the Arabian Gulf. Seawater temperature has an important impact on the marine environment. The aim of this study is to evaluate the drivers of seawater temperature in Kuwait Bay over the last two decades. Moderate Resolution Imaging Spectroradiometer (MODIS) and Landsat satellites images were used to describe the spatial and temporal distribution of sea surface temperature (SST) in the Arabian Gulf and Kuwait Bay. Hourly temperature measurements collected during the winter, 2007 and summer, 2008 were used to define the vertical temperature gradient in the water column, sea-bed and the intertidal flats of Kuwait Bay. Advanced Very High Resolution Radiometric (AVHRR) satellite data collected between 1985 and 2007 was also used to study the trends and drivers of increasing SST in Kuwait Bay over the last two decades. Satellite imaging showed that generally SST of Kuwait Bay is higher in the south than in the north. Highest SST was recorded near local human activities especially close to power and desalination plants due to thermal discharges. The field measurements showed that the water temperature is well-mixed in the bay. Seawater temperature reached 37 ºC in summer and dropped to 15.2 ºC in winter. Measurements beneath the sea-bed and within the intertidal flats showed that the temperature increased with depth in winter and decreased in summer. In winter, the sea-bed and intertidal flats are a source of heat to the water column, during summer the opposite is true. AVHRR data showed that the seawater temperature increased in Kuwait Bay by 0.62 (± 0.01)ºC/decade in the last two decades. This trend is three times greater than the global average. The defined trends were substantiated by routine in situ monthly measurements of SST made by the EPA in the bay, and were also similar in pattern and trend to air temperature recorded at Kuwait airport. Temperature trends have been affected by drivers, conveniently sub-divided into global (which contributes 37% of the change), regional (which contributes 50% of the change) and local (which contributes 13% of the change). SST measurements showed peaks in summer temperature coincident with El Niño events in 1998 and 2003. The measurements also showed a relatively-low summertime peak during 1991 in the aftermath of Iraqi invasion of Kuwait due to atmospheric dimming brought about by dense smoke that persisted in the region for most of that year. The long term trend also showed a drop in temperature after 2004 as a result of increasing dust storm frequency in the region. Air temperature was found to be the most dominant driver of seawater temperature in Kuwait Bay and operates at a regional scale. At the local scale the seawater temperature of Kuwait Bay is influenced by intertidal flat exposure time and the thermal discharge from power and desalination plants.

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9

Winhusen, Eric. "PRECAMBRIAN SEAWATER TEMPERATURE ANALYSIS USING OXYGEN ISOTOPES FROM HAMERSLEY CARBONATES, WESTERN AUSTRALIA". University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin992268720.

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10

Tan, KengSoong. "Electrochemical analysis of the erosion corrosion of HVOF aluminium bronze coatings". Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274707.

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Libri sul tema "Seawater – Analysis"

1

Crompton, T. R. Analysis of seawater. London [England]: Butterworths, 1989.

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2

K, Grasshoff, Ehrhardt M, Kremling K e Anderson Lief G, a cura di. Methods of seawater analysis. 3^a ed. Weinheim: Wiley-VCH, 1999.

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3

Aminot, Alain. Hydrologie des écosystèmes marins: Paramètres et analyses. Plouzané: Ifremer, 2004.

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4

Hartman, M. C. Adsorbers for in-situ collection and at-sea gamma analysis of dissolved Thorium-234 in seawater. Woods Hole, Mass: Woods Hole Oceanographic Institution, 1994.

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Hartman, M. C. Adsorbers for in-situ collection and at-sea gamma analysis of dissolved Thorium-234 in seawater. Woods Hole, Mass: Woods Hole Oceanographic Institution, 1994.

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6

Quigley, Michael N. Co-precipitation and flameless A.A.S. studies in seawater analysis. Salford: University of Salford, 1986.

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7

Oudot, Claude. La distribution des gaz dissous dans l'océan: Exemple de l'Atlantique tropical. Paris: Editions de l'ORSTOM, 1993.

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8

Michel, Pierre. Analyse des composés organostanniques dans l'eau de mer. Plouzané, France: Ifremer, 2002.

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9

Poisson, A. Intercomparison of total alkalinity and total inorganic carbon determinations in seawater. Paris: Unesco, 1990.

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10

Knapp, George P. Automated oxygen titration and salinity determination. Woods Hole, Mass: Woods Hole Oceanographic Institution, 1990.

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Capitoli di libri sul tema "Seawater – Analysis"

1

Gennaro, M. C., e S. Angelino. "Chemometric Applications to Seawater Analysis". In Chemical Processes in Marine Environments, 405–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04207-6_23.

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2

JOHNSON, KENNETH S., ROBERT L. PETTY e JENS THOMSEN. "Flow-Injection Analysis for Seawater Micronutrients". In Mapping Strategies in Chemical Oceanography, 7–30. Washington, D.C.: American Chemical Society, 1985. http://dx.doi.org/10.1021/ba-1985-0209.ch002.

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3

Tanoue, Eiichiro. "Electrophoretic Separation of Particulate Proteins in Seawater". In Marine Particles: Analysis and Characterization, 163–69. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm063p0163.

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4

Skinner, Ronald K., Sue J. Estey e Robert W. Schmieder. "Chemical Analysis of Seawater at Rocas Alijos". In Rocas Alijos, 135–37. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-2917-8_10.

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5

Carlson, Dave. "In Situ Exploration of Macromolecular and Particulate Materials in Seawater". In Marine Particles: Analysis and Characterization, 195–98. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm063p0195.

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Miki, Takahiro, e Mitsutaka Hino. "Dissolution Behavior of Elements in Steelmaking Slag Into Seawater". In Experimental Analysis of Nano and Engineering Materials and Structures, 841–42. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6239-1_418.

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Brownawell, Bruce J. "Methods for Isolating Colloidal Organic Matter from Seawater: General Considerations and Recommendations". In Marine Particles: Analysis and Characterization, 187–94. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm063p0187.

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Smallwood, R., e R. B. Waterhouse. "Residual Stress Patterns in Cold Drawn Steel Wires and Their Effect on Fretting-Corrosion-Fatigue Behaviour in Seawater". In Applied Stress Analysis, 82–90. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0779-9_8.

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Avci, Recep, Joseph M. Suflita, Gary Jenneman e David Hampton. "Impact of Metallurgical Properties on Pitting Corrosion in a High-Pressure Seawater Injection Pipeline". In Failure Analysis of Microbiologically Influenced Corrosion, 279–303. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9780429355479-16.

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Henrichs, Susan M. "Methods of Sample Handling and Analysis for Dissolved and Particulate Amino Acids and Carbohydrates in Seawater". In Marine Particles: Analysis and Characterization, 139–49. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm063p0139.

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Atti di convegni sul tema "Seawater – Analysis"

1

Taylor, S. W., e L. C. Headland. "Analysis and Design of Infiltration Seawater Intakes". In World Water and Environmental Resources Congress 2005. Reston, VA: American Society of Civil Engineers, 2005. http://dx.doi.org/10.1061/40792(173)389.

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2

Fei, Wang, e Guan Yunjing. "Channel simulation analysis of seawater laser communication". In 2021 IEEE International Conference on Artificial Intelligence and Computer Applications (ICAICA). IEEE, 2021. http://dx.doi.org/10.1109/icaica52286.2021.9498183.

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3

ZhanLin Xie e YingMin Wang. "Attenuation property analysis of lidar transmission in seawater". In 2012 International Conference on Measurement, Information and Control (MIC). IEEE, 2012. http://dx.doi.org/10.1109/mic.2012.6273472.

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4

Shinohara, Toshiya, Mamiko Inamori e Masayuki Morimoto. "Loss analysis of contactless power transmission in seawater". In 2017 2nd International Conference on Power and Renewable Energy (ICPRE). IEEE, 2017. http://dx.doi.org/10.1109/icpre.2017.8390530.

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5

Choukai, Oumaima, e Driss Zejli. "Seawater greenhouse modeling simulation and analysis of inputs impact". In 2016 International Renewable and Sustainable Energy Conference (IRSEC). IEEE, 2016. http://dx.doi.org/10.1109/irsec.2016.7983973.

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6

San Vicente De la Riva, Blanca, Jose M. Costa Fernandez, Rosario Pereiro Garcia e Alfredo Sanz-Medel. "Flow through luminescence for heavy metal analysis in seawater". In Photonics East '99, a cura di Tuan Vo-Dinh e Robert L. Spellicy. SPIE, 1999. http://dx.doi.org/10.1117/12.372864.

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7

Mohd Razali, Siti Harliza, Razali Ngah, Kamalia Kamardin e Yoshihide Yamada. "Performance Analysis of Normal Mode Helical Antenna in Seawater". In 2020 IEEE International RF and Microwave Conference (RFM). IEEE, 2020. http://dx.doi.org/10.1109/rfm50841.2020.9344744.

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Xin Chunlin, Gao Ningning e Shen Fengwu. "Application of SVM algorithms for analysis of seawater quality". In 2010 International Conference on Computer Application and System Modeling (ICCASM 2010). IEEE, 2010. http://dx.doi.org/10.1109/iccasm.2010.5620574.

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9

Zhao, L. Z., Y. Peng, J. Li, R. Li, Y. Y. Xu, B. L. Liu e C. W. Sha. "Numerical analysis on a helical-channel seawater MHD generator". In 2012 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia). IEEE, 2012. http://dx.doi.org/10.1109/isgt-asia.2012.6303136.

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Ibrahim, Nasiru I., Fahad A. Al-Sulaiman e Saidur Rahman. "Thermodynamic Analysis of a Mini Hybrid Solar Driven Cooling-Desalination System". In ASME 2016 10th International Conference on Energy Sustainability collocated with the ASME 2016 Power Conference and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/es2016-59524.

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Water desalination and air conditioning consumes huge amount of energy that mostly come from fossil fuels, which produces harmful emissions detrimental to the environment. This work is concerned with the use of a new hybrid cooling and water desalination system driven by solar thermal energy. The system primarily consists of an evacuated tube solar collector, LiBr absorption chiller, and a humidification-dehumidification (HDH) unit. Seawater is used to cool the condenser and absorber of the chiller as well as the condenser of the HDH unit. The heat rejected by the absorber is used to drive the HDH unit. Thermodynamic model of the system has been formulated and simulated using engineering equation solver (EES) software. The results show that the coefficient of performance (COP) of the chiller nearly remain constant with increase in seawater temperature at the absorber inlet. The average COP of the chiller is found to be 0.76. The hybrid system efficiency increases with increase in the seawater temperature mainly due the effect of latent heat of water condensation. The rate of fresh water production increases with increase in the seawater inlet temperature. This resulted in a higher outlet temperature at the absorber exit, leading to a higher energy input to the HDH unit. Gained output ratio (GOR) increases with increase in seawater temperature. This is due to the direct proportionality of the GOR to the amount of fresh water produced. The results also revealed that increasing the flow rate of seawater causes the decrease in the fresh water production due to the corresponding decrease in the temperature of the seawater.

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Rapporti di organizzazioni sul tema "Seawater – Analysis"

1

Wakeham, Stuart G. Organic Geochemistry of Seawater Particulate Matter: Final Data Analysis Interpretation. Fort Belvoir, VA: Defense Technical Information Center, agosto 1991. http://dx.doi.org/10.21236/ada240199.

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2

Chipman, D. W., e T. Takahashi. Development of gas chromatographic system for dissolved organic carbon analysis in seawater. Office of Scientific and Technical Information (OSTI), dicembre 1992. http://dx.doi.org/10.2172/6834139.

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3

Chipman, D. W., e T. Takahashi. Development of gas chromatographic system for dissolved organic carbon analysis in seawater. Annual progress report. Office of Scientific and Technical Information (OSTI), dicembre 1992. http://dx.doi.org/10.2172/10109913.

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4

Wai, Chien, Horng-Bin Pan, Joanna Wang, Kevin Hutchison, Gary Gill, Li-Jung Kuo, Jonathan Strivens, Peter Santschi, Peng Lin e Chen Xu. Production of Uranium from Seawater Using a Novel Polymer Adsorbent – Process Development and Cost Analysis (Final Scientific/Technical Report SBIR Phase II). Office of Scientific and Technical Information (OSTI), luglio 2021. http://dx.doi.org/10.2172/1807642.

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5

Gadd, M. G., J. M. Peter e D. Layton-Matthews. Genesis of hyper-enriched black shale Ni-Mo-Zn-Pt-Pd-Re mineralization in the northern Canadian Cordillera. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328013.

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Polymetallic (Ni-Mo-Zn-Pt-Pd-Au-Re) hyper-enriched black shales in the northern Canadian Cordillera consist of thin, semi-massive sulfides interbedded with black shale. We studied HEBS deposits at Nick, Peel River, Monster River, and Moss in northern Yukon, and at a single locality underlying the Cardiac Creek Pb-Zn-Ag deposit in northeastern British Columbia. High-grade mineralization contains up to 7.4 weight per cent Ni, 2.7 weight per cent Zn, 0.38 weight per cent Mo, 400 ppb Pt, 250 ppb Pd, 160 ppb Au, and 58.5 ppm Re. Sulfide mineralization formed during syngenesis to later diagenesis. Analyses by LA-ICP-MS indicate that pyrite is the principal host of platinum-group elements, Au, and Re. Mineralization and sedimentation were coeval based on the overlap between Re-Os geochronology of HEBS at Nick and Peel River (390.7 ± 5.1 and 387.3 ± 4.4 Ma, respectively) and conodont biostratigraphic ages of sedimentary host rocks. Bulk S isotope composition of HEBS is uniformly negative, indicating that bacterial reduction of seawater sulfate generated sulfur to precipitate sulfide minerals. The initial Os ratios at Peel River (0.25 ± 0.07) and Nick (0.32 ± 0.20) overlap with Middle Devonian seawater, suggesting that elemental enrichment was derived from seawater.

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6

Greinert, Jens. Mine Monitoring in the German Baltic Sea 2020; Dumped munition monitoring AL548, 03rd – 16th November 2020, Kiel (Germany) – Kiel (Germany) „MineMoni-II 2020“. GEOMAR Helmholtz Centre for Ocean Research Kiel, 2021. http://dx.doi.org/10.3289/cr_al548.

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ALKOR cruise AL548 took place as part of the EMFF (European Maritime and Fisheries Fund)-funded project BASTA (Boost Applied munition detection through Smart data inTegration and AI workflows; https://www.basta-munition.eu) and as continuation of the munition monitoring started within the BMBF-funded project UDEMM (Environmental Monitoring for the Delaboration of Munition in the Sea; https://udemm.geomar.de/). In October 2018, a first cruise (POS530 MineMoni2018) was conducted, to gather data for a broad baseline study in the German Baltic Sea. Results show a moderate contamination level on regional and coastal scale, but indicate higher levels for specific local areas. Within UDEMM, expertise was developed to detect, exactly locate and monitor munition (e.g. torpedoes, sea mines, ground mines) on the seafloor using optical and hydroacoustic means. In addition, chemical analyses of dissolved contaminants in the water and sediments was performed. Data acquired during this cruise are used in BASTA, which aims for enhanced munition detection via AUV-based artificial intelligence applied on multi-sensor datasets. At the same time, the project ExPloTect (Ex-situ, near-real-time exPlosive compound deTection in seawater) (also EMFF-funded) addresses the need for an innovative approach to detect explosive compounds in seawater. A prototype system was used and successfully tested for the first time during this cruise. The main focus was placed onto the two already known dumpsites Kolberger Heide and Lübeck Bight. Additionally, new areas Falshöft (Schleswig-Holstein) and Cadet Channel, Trollegrund and Großklützhöved (Mecklenburg-Vorpommern) were explored. In each area high-resolution multibeam mapping was performed and contact lists, indicating potential munition objects were produced on board. AUV surveys were conducted to ground-truth possible contacts via detailed photograph and magnetometer mapping. This was complemented with towed video (TV)-CTD profiles. The transits to and between those sites were planned along former constraint routes during WWII. These routes were main targets of the British Air Force and mines and bombs can be expected along these ways. During transits water samples were taken with on a CTD- (conductivity, temperature, depth) rosette-mounted Niskin bottles in regular distances, in order to obtain a comprehensive understanding munition compounds (inter alia trinitrotoluene (TNT)) measurements across the German Baltic Sea.

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