Literatura académica sobre el tema "Kd coefficient"
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Artículos de revistas sobre el tema "Kd coefficient"
Akter, Sonia, Lis Wollesen de Jonge, Per Møldrup, Mogens Humlekrog Greve, Trine Nørgaard, Peter Lystbæk Weber, Cecilie Hermansen, Abdul Mounem Mouazen y Maria Knadel. "Visible Near-Infrared Spectroscopy and Pedotransfer Function Well Predict Soil Sorption Coefficient of Glyphosate". Remote Sensing 15, n.º 6 (22 de marzo de 2023): 1712. http://dx.doi.org/10.3390/rs15061712.
Texto completoKim, Do-Hyeon y Jun-Yeop Lee. "Prediction of the Adsorption Behaviors of Radionuclides onto Bentonites Using a Machine Learning Method". Minerals 12, n.º 10 (25 de septiembre de 2022): 1207. http://dx.doi.org/10.3390/min12101207.
Texto completoZolfaghari, Kiana, Claude R. Duguay y Homa Kheyrollah Pour. "Satellite-derived light extinction coefficient and its impact on thermal structure simulations in a 1-D lake model". Hydrology and Earth System Sciences 21, n.º 1 (24 de enero de 2017): 377–91. http://dx.doi.org/10.5194/hess-21-377-2017.
Texto completoEstrada-Arriaga, E. B. y N. P. Mijaylova. "A comparison of biodegradation kinetic models applied to estrogen removal with nitrifying activated sludge". Water Science and Technology 62, n.º 9 (1 de noviembre de 2010): 2183–89. http://dx.doi.org/10.2166/wst.2010.441.
Texto completoCastillo-Ramírez, Alejandra, Eduardo Santamaría-del-Ángel, Adriana González-Silvera, Robert Frouin, María-Teresa Sebastiá-Frasquet, Jing Tan, Jorge Lopez-Calderon, Laura Sánchez-Velasco y Luis Enríquez-Paredes. "A New Algorithm to Estimate Diffuse Attenuation Coefficient from Secchi Disk Depth". Journal of Marine Science and Engineering 8, n.º 8 (25 de julio de 2020): 558. http://dx.doi.org/10.3390/jmse8080558.
Texto completoZhang, Yu, Zhantang Xu, Yuezhong Yang, Guifen Wang, Wen Zhou, Wenxi Cao, Yang Li et al. "Diurnal Variation of the Diffuse Attenuation Coefficient for Downwelling Irradiance at 490 nm in Coastal East China Sea". Remote Sensing 13, n.º 9 (26 de abril de 2021): 1676. http://dx.doi.org/10.3390/rs13091676.
Texto completoMoiseev, S. I., A. I. Buyanovsky, A. N. Deminov, S. V. Klinushkin y S. A. Moiseeva. "Application of the morphometric maturity coefficient to determine terminal molt in the crab Chionoecetes angulatus from the Okhotsk Sea". Trudy VNIRO 179 (26 de octubre de 2020): 5–25. http://dx.doi.org/10.36038/2307-3497-2020-179-5-25.
Texto completoOnyeocha, Veronica O., O. D. Akpan, Ikejiofor A. Onuchukwu y Maduabuchi A. Chidiebere. "The Dimerization Effects of Some Solutes on the Partition Coefficient kD in Binary Immiscible Solvents". International Letters of Chemistry, Physics and Astronomy 80 (diciembre de 2018): 40–52. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.80.40.
Texto completoKraus, Cleber Nunes, Daniel Andrade Maciel, Marie Paule Bonnet y Evlyn Márcia Leão de Moraes Novo. "Phytoplankton Genera Structure Revealed from the Multispectral Vertical Diffuse Attenuation Coefficient". Remote Sensing 13, n.º 20 (14 de octubre de 2021): 4114. http://dx.doi.org/10.3390/rs13204114.
Texto completoPrasetyo, Budhi Agung, Vincentius Paulus Siregar, Syamsul Bahri Agus y Wikanti Asriningrum. "IN-SITU MEASUREMENT OF DIFFUSE ATTENUATION COEFFICIENT AND ITS RELATIONSHIP WITH WATER CONSTITUENT AND DEPTH ESTIMATION OF SHALLOW WATERS BY REMOTE SENSING TECHNIQUE". International Journal of Remote Sensing and Earth Sciences (IJReSES) 14, n.º 1 (21 de junio de 2017): 47. http://dx.doi.org/10.30536/j.ijreses.2017.v14.a2682.
Texto completoTesis sobre el tema "Kd coefficient"
Nordanstorm, Nika. "Evaluation of distribution coefficients (KOC and Kd) for per- and polyfluoroalkyl substances". Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-101693.
Texto completoSoares, Marcio Roberto. "Coeficiente de distribuição (Kd) de metais pesados em solos do estado de São Paulo". Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-31052005-170719/.
Texto completoDisposal of solid residues and application of pesticides and fertilizers can lead to an increase in the concentration of heavy metals in soils and groundwater. The legislation on heavy metals nearly always refers to the total contents of these elements; however, an evaluation of their hazard potential and toxicity requires an assessment of the metal fraction that is mobile and possibly bioavailable. A few numerical parameters have been used as a foundation to make decisions and to focus on prevention or remediation strategies in contaminated areas. The solid-solution distribution coefficient (Kd), defined as the relation between metal concentrations that are adsorbed and those present in the solution, allows a comparison between the behavior of elements in different systems. Environmental protection agencies use generic Kd values found in bibliographic references; these values are often obtained under distinct conditions from those found in the tropical region, and may lead to an erroneous hazard estimates. Thus, it becomes clearly necessary to obtain Kd values that will validate these contamination estimates or provide guidance for intervention strategies in already contaminated areas. The objectives of this work were to evaluate heavy metal retention in 30 representative soils of the State of São Paulo, based on a quantification of distribution coefficient values (Kd) and their relation with soil attributes, such as pH, CEC and clay contents, organic matter, and various forms of Fe, Al, and Mn oxides. The distribution coefficients were obtained from linear adsorption isotherms, constructed after the addition of 0.1; 0.5; 1.0; 2.5; and 5.0 mg L-1 Cd, Co, Cr, Cu, Ni, Pb, and Zn, in batch-type experiments. The smallest variations in Kd value were recorded for Pb (one order of magnitude 121 to 7,020 L kg-1) and Ni (two orders of magnitude - 6 to 998 L kg-1), while variations indicating four orders of magnitude were observed for Cd (7-14,339 L kg-1), Co (2 - 34,473 L kg-1), and Cr (1 - 21,267 L kg-1). Zinc distribution coefficients were between 5 and 123,849 L kg-1, with a variation of five orders of magnitude. The values herein obtained were similar to those that have been used by CETESB, except for Cr and Ni. The following order of affinity was obtained: Pb>>>Cu>>Cd>Zn≅Ni≅Cr>Co. More than 55% of the variation in distribution coefficients for metallic cations of the groups IIB (Cd and Zn) and VIIIB (Co and Ni) were explained by pH. In the joint analysis, CEC and pH explained about 80% of the variation in Kd values for Cd, Co, and Ni, and showed that nonspecific adsorption mechanisms are involved in the retention of these elements. Regarding the distribution coefficients for Cu and Pb, pH and clay content accounted for about 63% of the variation. Kd values for Cr showed an inverse correlation with pH, especially in the joint analysis with clay contents, and 61% of the variation were explained by these variables.
Pinel, Franck. "Chimie de 63Ni et de 137Cs dans le système sol-plante". Montpellier, ENSA, 2002. http://www.theses.fr/2002ENSA0007.
Texto completoTaghavi, Lobat. "Dynamique de transfert des pesticides en périodes de crue sur les bassins versants agricoles gascons". Thesis, Toulouse, INPT, 2010. http://www.theses.fr/2010INPT0098/document.
Texto completoThe mechanisms of pesticides transport to stream flow were studied in two agricultural nested catchments of different size in Gascogne region (South West of France): the Save river basin at Larra (1110 km2) and the Montoussé experimental watershed at Auradé (3.28 km2). The intensive agricultural practices used in this region lead to an important risk for water resources by pesticides, especially during storm events. This is why we have paid special attention on storm events when a large quantity of contaminant was transported during hydrological periods. Fourteen molecules of pesticides (herbicides and fungicides) were investigated during the study period. Both of these groups are widely used for agricultural purposed in these catchments. The results achieved over the two years monitoring (2007-2009) enable us to emphasize the principal processes, implied in pesticide transfer on these agricultural catchments. The majority of compounds are detected during storm runoff events. And, the average concentrations of some pesticides are exceeded at the authorization limit of the European Union for pesticide concentrations in drinking water (0.1 µg.L-1 for individual pesticides and 0.5 µg.L-1 for total pesticides). To better understand the mechanisms of pesticide transport hysteresis, patterns on the concentration-discharge relationship (result of different concentration of pesticides in rising and falling limb of storm) were studied. However, clockwise or anticlockwise hysteresis patterns could be observed for some molecules of pesticide and their controlling factors such as dissolved organic carbon (DOC), particulate organic carbon (POC) and total suspended matters (TSM) according to their transfer dynamic in the catchment. We proceeded with hydrograph separation of the main stormflow components (surface runoff, subsurface flow and groundwater) so that the main pesticide routing could be traced for its soil-river transfers. We also came to the conclusion that there is a positive relationship between riverine TSM, DOC and pesticide, concentrations and the discharges of surface or subsurface runoffs according to pesticide properties. Pesticide flux calculation shows between 60 to 90% of the molecule transport takes place during storm periods. Specific flux calculation also demonstrated the higher flux value in Save catchment than in Aurade with higher pesticide concentration for a given specific discharge. The latter result may be due to the more consumption of pesticide in Save catchment. The analyses of pesticides both in filtered and unfiltered water enabled us to estimate the distribution of pesticides into particulate and dissolved phases. Moreover, the pesticide flux values allow calculating average partition coefficients kd between dissolved and particulate fractions which present good relationship with Kow values (octanol-water) extracted from literature. The percentage of each pesticide transported as particulate forms is also well correlated to Kow
Johansson, Emilia. "Factors controlling the sorption of Cs, Ni and U in soil : A statistical analysis with experimental sorption data of caesium, nickel and uranium in soils from the Laxemar area". Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281938.
Texto completoFör att kunna fatta beslut relaterade till hypotetisk framtida kontaminering från slutförvar av radioaktivt avfall är det direkt avgörande att förstå mobiliteten av radioaktiva element i miljön. Sorption är en av de viktigaste kemiska mekanismerna som kan minska spridningen av radionuklider i vatten/jord/bergssystem, där nukliderna fördelar sig mellan vätskefasen och ytor på fasta partiklar i dessa system. Fördelningskoefficienter (Kd värden) används generellt som ett kvantitativt mått på sorptionen, där ett högt Kd värde innebär att en större andel av ämnet i fråga är bundet till den fasta fasen. Under hösten 2006 togs jordprover från tre dalgångar i Laxemar/Oskarshamn. Totalt åtta jordprover karakteriserades för ett antal jordparametrar som är viktiga för geokemisk sorption och användes senare i batchförsök tillsammans med ett naturligt grundvatten. Fördelningskoefficienter (Kd värden) bestämdes för sju radionuklider (Cs, Eu, I, Ni, Np, Sr and U) för vart och ett av de åtta jordproverna. För att bidra till tolkningen av sorptionsresultaten tillsammans med jordprovernas egenskaper syftar denna studie till att beskriva sorptionsbeteendet hos radionukliderna caesium, nickel och uran samt urskilja vilka parametrar som kan fungera som grund för att uppskatta sorptionsstyrkan av radionuklider i allmänhet. För att uppnå detta syfte så har studien följande mål. Identifiera de jord- och marklösningsegenskaper som kontrollerar sorptionen av Cs, Ni respektive U i de åtta Laxemar proverna. Bestämma vilket Laxemar-jordprov som starkast sorberar de tre radionukliderna. Identifiera de jordparametrar som bör prioriteras vid jordkarakteriseringar, baserat på deras sorptionsinflytande, för att kunna uppskatta Kd värden endast med begränsad information om ett jordsystem. Metoden innefattade kvantitativa metoder såsom sammanställning av kemiska jämviktsdiagram med programvaran Hydra/Medusa och korrelationsanalyser med hjälp av statistikprogramvaran SPSS statistics. De kemiska jämviktsdiagrammen bidrog till att beskriva specieringen av respektive nuklid som en funktion av pH och korrelationsanalyserna bidrog till att identifiera linjära samband mellan par av variabler, tex mellan Kd och jordparametrar. Baserat på specieringsdiagrammen för varje radionuklid och identifierade viktiga linjära och icke-linjära förhållanden mellan Kd-värdena och ett antal jordparametrar har följande egenskaper hos jordarna och marklösningen visat sig huvudsakligen kontrollera sorptionen av Cs, Ni respektive U i de åtta Laxemar jordarna: För caesium gäller jordens specifika ytarea kopplad till lerinnehållet, medan för nickel är det katjonbytarkapaciteten, organiskt material, alkaliska pH-värden samt löst organiskt material. Sorptionen av uran befanns kontrolleras av katjonbytarkapaciteten, organiskt material, löst organiskt material, alkaliska pH-värden samt lösta karbonater. Den jord som visade starkast sorption varierar mellan de tre nukliderna, vilket kan relateras till nuklidernas individuella sorptionsbeteende i jord samt jordarnas olika fysikaliska och kemiska egenskaper. Parametrarna som bör prioriteras vid karaktärisering av jordprov identifierades vara: pH, katjonbytarkapaciteten, jordens specifika ytarea, mängden organiskt material samt jordtexturen (lerinnehåll).
Nobile, Cécile. "Phytodisponibilité du phosphore dans les sols agricoles de La Réunion fertilisés sur le long-terme avec des résidus organiques : la dose d’apport est-elle le seul déterminant à prendre en compte ?" Thesis, La Réunion, 2017. http://www.theses.fr/2017LARE0059/document.
Texto completoApplication of organic residues (OR) on agricultural soils could reduce the use of mineral phosphorus (P) fertilizers, but this implies to determine the efficiency of OR to meet crop requirements. We thus aimed to study mechanisms determining the effects of OR on P bioavailability to plants (phytoavailability). Our work was based on five field trials with decadal organic or mineral fertilization located in Réunion island, and on incubations and plant growth experiments under controlled conditions. Available inorganic P (Pi) and organic P (Po) was determined using extractions (water, Olsen), the diffusive gradients in thin films technique (DGT) and the isotopic dilution associated to anion exchange membranes (EAEM). Phytoavailable P was determined as the plant P uptake. Soil Pi sorption capacity was determined using sorption curves. For all soil types studied (andosol, andic cambisol, nitisol, and arenosol), RO increased mainly available Pi and had few effects on available Po, which suggests that mineralization of Po applied with RO does not limit Pi availability. Application of RO increased available Pi mainly by increasing soil pH and consequently by decreasing soil Pi sorption capacity. Phytoavailable P increased with soil available Pi, but decreased with increasing soil pH. Our work suggests that except the dose of P applied, effect of RO on P phytoavailability depends mainly on soil pH changes induced
Joubert, Antoine. "Etude de l'effet de facteurs environnementaux sur les processus biogéochimiques de mobilisation du Pb, Zn, Cd, As et Hg dans les sols - Modélisation empirique de la mobilité et phytodisponibilité des ETM". Phd thesis, Université Henri Poincaré - Nancy I, 2008. http://tel.archives-ouvertes.fr/tel-00289902.
Texto completoDoherty, David. "Determination of tributyltin environmental contamination and Kd partition coefficients in sediments using a HPLC analytical method". Thesis, University of Strathclyde, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.502361.
Texto completoLibros sobre el tema "Kd coefficient"
United States. Environmental Protection Agency. Office of Radiation and Indoor Air, United States. Dept. of Energy. Office of Environmental Restoration y United States. Environmental Protection Agency. Office of Air and Radiation, eds. Understanding variation in partition coefficient, Kd, values: A cooperative effort. [Washington, D.C.?]: U.S. Environmental Protection Agency, Office of Air and Radiation, 1999.
Buscar texto completo"Tennen Baria Kd" Senmon Kenkyūkai (1999 Kyōto Daigaku Genshiro Jikkenjo). "Tennen Baria Kd" Senmon Kenkyūkai hōkokusho: Kaisaibi 1999-nen 11-gatsu 24--25-nichi. Ōsaka-fu Sennan-gun Kumatori-chō: Kyōto Daigaku Genshiro Jikkejo, 2000.
Buscar texto completoUnited States. Environmental Protection Agency. Office of Air Quality Planning and Standards, ed. Understanding Variation In Partition Coefficient, KD, Values... Volume II: Review Of Geochemistry And Available KD Values For Cadmium Chromium..., U.S. Environmental Protection Agency... Aug. 1998. [S.l: s.n., 1999.
Buscar texto completoUsing Thermodynamic Sorption Models for Guiding Radioelement Distribution Coefficient (Kd) Investigations. OECD, 2001. http://dx.doi.org/10.1787/9789264192935-en.
Texto completoNea. Using Thermodynamic Sorption Models for Guiding Radioelement Distribution Coefficient (Kd) Investigations: A Status Report (Radioactive Waste Management). Organization for Economic, 2001.
Buscar texto completoCapítulos de libros sobre el tema "Kd coefficient"
Sharma, S. "Graphitic Carbon Nitride based Photocatalytic Systems for High Performance Hydrogen Production: A Review". En Materials Research Foundations, 161–92. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901359-5.
Texto completoCarder, Kendall L. y David K. Costello. "Optical Effects of Large Particles". En Ocean Optics. Oxford University Press, 1994. http://dx.doi.org/10.1093/oso/9780195068436.003.0017.
Texto completoSposito, Garrison. "Mineral Weathering". En The Chemistry of Soils. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190630881.003.0009.
Texto completo"Appendix B 1. Determination of Kinetic Coefficients KS, μmax, Yobs and Kd from Laboratory Data." En Studies in Environmental Science, 395–98. Elsevier, 1993. http://dx.doi.org/10.1016/s0166-1116(08)70534-x.
Texto completoBethke, Craig M. "Surface Complexation". En Geochemical Reaction Modeling. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195094756.003.0012.
Texto completoActas de conferencias sobre el tema "Kd coefficient"
Jamet, Cedric, Hubert Loisel y David Dessailly. "Estimation of the diffuse attenuation coefficient Kd(lambda) with a neural network inversion". En IGARSS 2011 - 2011 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2011. http://dx.doi.org/10.1109/igarss.2011.6048911.
Texto completoNovikov, V. N., S. A. Belkov, S. A. Buiko, I. N. Voronich, D. G. Efimov, A. I. Zaretsky, G. G. Kochemasov et al. "Gain measurements of transverse stimulated Raman scattering in KDP, KD*P". En The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cwf42.
Texto completoSchmeltz, M., J. M. Froidefond, F. Jourdain y N. Martiny. "IOP from reflectance measurements to obtain the Kd coefficient: application to the Gabon and Congo coastal waters". En SPIE Optical Engineering + Applications, editado por Robert J. Frouin. SPIE, 2009. http://dx.doi.org/10.1117/12.828851.
Texto completoJamet, Cédric, Hubert Loisel y David Dessailly. "Empirical nonlinear determination of the diffuse attenuation coefficient Kd(490) in coastal waters from ocean color images". En SPIE Asia-Pacific Remote Sensing, editado por Robert J. Frouin, Hong Rhyong Yoo, Joong-Sun Won y Aiping Feng. SPIE, 2010. http://dx.doi.org/10.1117/12.869730.
Texto completoWu, Tao, Amayri Samer, Jakob Drebert, Luc R. Van Loon y Tobias Reich. "Determination of Diffusion Parameters by a Computer Code (FDP) Based on Mathematica 6.0". En 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29334.
Texto completoSepehri, Ali, Stuart Harbert y Dave Holberry. "A Study on the Influence of Sea Water Convective Heat Transfer Coefficient in Design Verification of Subsea HPHT Equipment". En ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65594.
Texto completoMimura, Hitoshi, Minoru Matsukura, Tomoya Kitagawa, Fumio Kurosaki, Akira Kirishima, Daisuke Akiyama y Nobuaki Sato. "Evaluation of Adsorption Properties of U(VI) for Various Inorganic Adsorbents". En 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81338.
Texto completoWang, X. D., P. Basseras, R. J. D. Miller y H. Vanherzeele. "KTP: a new electro-optic device for high-power, high-repetition-rate applications". En OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.mnn7.
Texto completoKim, Young-Taek y Jong-In Lee. "Experiments on Stability of Concrete Armor Units at Convex Corner Trunk". En ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61429.
Texto completoGewirtz, A., C. L. shepiro, R. Bovd y R. W. Colman. "REGULATION OF FACTOR V (FV) EXPRESSION IN HUMAN MEGAKARYOCYTES". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643280.
Texto completoInformes sobre el tema "Kd coefficient"
Serkiz, S. M. Recommended Partition Coefficient (Kd) Values for Nuclide Partitioning in the Presence of Cellulose Degradation Products. Office of Scientific and Technical Information (OSTI), febrero de 2001. http://dx.doi.org/10.2172/775082.
Texto completoSullivan, T. Recommended values for the distribution coefficient (Kd) to be used in dose assessments for decommissioning the Zion Nuclear Power Plant. Office of Scientific and Technical Information (OSTI), junio de 2014. http://dx.doi.org/10.2172/1143601.
Texto completoSullivan, T. Recommended values for the distribution coefficient (Kd) to be used in dose assessments for decommissioning the Zion Nuclear Power Plant. Office of Scientific and Technical Information (OSTI), septiembre de 2014. http://dx.doi.org/10.2172/1178623.
Texto completoWibowo, Johannes y Jamie López-Soto. Field Jet Erosion Tests on Benbrook Dam, Texas. Engineer Research and Development Center (U.S.), diciembre de 2021. http://dx.doi.org/10.21079/11681/42545.
Texto completoKaplan, D. I. Distribution Coefficients (Kd Values) for Waste Resins Generated from the K and L Disassembly Basin Facilities. Office of Scientific and Technical Information (OSTI), diciembre de 2002. http://dx.doi.org/10.2172/805607.
Texto completoKaplan, D. Recommended Distribution Coefficients, Kd Values, for Special Analysis Risk Calculations Related to Waste Disposal and Tank Closure on the Savannah River Site. Office of Scientific and Technical Information (OSTI), agosto de 2005. http://dx.doi.org/10.2172/890185.
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