Academic literature on the topic 'Matériaux à gradient de composition'
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Journal articles on the topic "Matériaux à gradient de composition"
Tudurí, Adriana, Leandro Bergamino, Roberto Violante, José Luis Cavallotto, and Felipe García-Rodríguez. "SPATIAL AND TEMPORAL VARIATION IN THE PRESENT AND HISTORICAL SEDIMENTARY ORGANIC MATTER WITHIN THE RÍO DE LA PLATA ESTUARY (SOUTH AMERICA) IN RELATION TO THE SALINITY/TURBIDITY GRADIENT / VARIAÇÃO ESPACIAL E TEMPORAL PRESENTE E HISTÓRICA DA MATÉRIA ORGÂNICA SEDIMENTAR NO ESTUÁRIO DO RÍO DE LA PLATA (AMÉRICA DO SUL) EM RELAÇÃO AO GRADIENTE DE SALINIDADE / TURBIDEZ." Journal of Sedimentary Environments 3, no. 4 (December 23, 2018): 265–79. http://dx.doi.org/10.12957/jse.2018.39152.
Full textHermann, Jörg, Chao Shen, Antonio Hermann, Olivier Aleixo da Luz, Aya Taleb, and Frédéric Pelascini. "Analyse élémentaire : Des matériaux sans étalonnage." Photoniques, no. 103 (July 2020): 46–49. http://dx.doi.org/10.1051/photon/202010346.
Full textCalligaro, Thomas, and Claire Pacheco. "Un accélérateur de particules fait parler les œuvres d’art et les objets archéologiques." Reflets de la physique, no. 63 (October 2019): 14–20. http://dx.doi.org/10.1051/refdp/201963014.
Full textWei Zhang and Wai-Kuen Cham. "Gradient-Directed Multiexposure Composition." IEEE Transactions on Image Processing 21, no. 4 (April 2012): 2318–23. http://dx.doi.org/10.1109/tip.2011.2170079.
Full textAbbaoui, M., Z. Koalaga, and A. Lefort. "Composition et coefficients de transport des plasmas de matériaux plastiques (polymères)." Canadian Journal of Physics 70, no. 12 (December 1, 1992): 1291–308. http://dx.doi.org/10.1139/p92-210.
Full textLi, Qiang, and Ming Qing Wu. "Based on the Gradient Source Representation of Functionally Gradient Materials." Applied Mechanics and Materials 496-500 (January 2014): 80–83. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.80.
Full textGarnett, D. R., and G. A. Shields. "The composition gradient across M81." Astrophysical Journal 317 (June 1987): 82. http://dx.doi.org/10.1086/165257.
Full textCherradi, N., D. Delfosse, B. Ilschner, and A. Kawasaki. "Matériaux à gradient : exploitation du concept et techniques de production par métallurgie des poudres." Revue de Métallurgie 93, no. 2 (February 1996): 185–96. http://dx.doi.org/10.1051/metal/199693020185.
Full textBoudon, Pierre. "L’entrelacs architectural." Protée 33, no. 2 (August 31, 2006): 9–18. http://dx.doi.org/10.7202/012288ar.
Full textManaila, R., A. Devenyi, D. Biro, L. David, P. B. Barna, and A. Kovacs. "Multilayer TiAlN coatings with composition gradient." Surface and Coatings Technology 151-152 (March 2002): 21–25. http://dx.doi.org/10.1016/s0257-8972(01)01633-4.
Full textDissertations / Theses on the topic "Matériaux à gradient de composition"
Curnis, Agathe. "Évolution métallurgique et corrosion à haute température de matériaux à gradient de composition élaborés par procédé Laser Metal Deposition - powder." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCK018.
Full textCompositionally graded materials offer numerous advantages, including the ability to locally adjust the material composition to adapt it to service conditions while minimizing the risks of incompatibilities between materials. This thesis work focused on the development of a compositionally graded material system using the Laser Metal Deposition-powder process, starting from a low-alloy steel substrate to alloy 625. As this multi-material system is expected to exhibit good high-temperature corrosion resistance, its behavior in an air atmosphere at 800°C and 650°C, with and without a NaCl solid deposit, was studied.Characterization of the as-built compositionally gradient system revealed various microstructures and phases depending on the regions of the gradient. Metallurgical evolutions were highlighted during aging at 800°C, particularly in alloy 625 with the precipitation of the δ phase.The oxidation resistance of the system was studied in an air atmosphere at 800°C for up to 2 500 h. Parabolic kinetics related to the formation of a protective Cr2O3 layer were highlighted. The presence of a NaCl deposit catastrophically accelerated the degradation of alloy 625. In this case, the corrosion scale was thick, highly cracked or spalled and mainly composed of NiO, Cr2O3, and (Ni,Cr,Fe)3O4. The metal region at the interface with the oxide layer was severely damaged, especially by the formation of an interconnected voids network allowing the rapid diffusion of chlorinated species in the active oxidation mechanism occurring under these conditions. In comparison, at 650°C, material degradation with a NaCl deposit was significantly slowed, with a thinner corrosion scale, and a less damaged substrate. Differences in behavior between the two temperatures can be understood through differences in microstructural characteristics and the volatility of metal chlorides."
Villaret, Flore. "Développement d’une jonction austéno-martensitique à gradient de composition chimique par fabrication additive." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI104.
Full textThis PhD work concerns the problem of bimetallic austenitic/martensitic steel connections. This research action focuses on a 316L austenitic steel (X2 CrNiMo 18-12-02) / Fe-9Cr-1Mo (X10 CrMo 9-1) martensitic steel connection. The objective is to understand the metallurgical problems related to the assembly of these two steels and to evaluate the possibilities of using powder metallurgy and additive manufacturing to produce austenitic/martensitic steel transitions. A weld obtained by electron beam is used as a reference for this study which focuses on the interest of powder metallurgy to achieve a transition between two steels. Materials with a chemical composition gradient have been consolidated by HIP and SPS and show very good mechanical properties and an excellent junction between the two steels. By additive manufacturing (DED-LB or PBF-LB), we also obtain very good bonds between the two steels, but the microstructures are much more complex. Curiously, we observe that the higher the cooling rate, the higher the ferrite fraction in the martensitic steel. Different calculations based on the nucleation and growth of the austenitic phase have made it possible to propose a coherent scenario to explain the phase fractions present in the materials. The transition zone between the two steels shows strong variations in hardness. These variations are explained by changes in chemical composition, leading to modifications in phase change temperatures, and the particular thermal cycles seen during building. From a technological point of view, materials obtained by additive manufacturing have tensile performances very similar to those obtained by electron beam welding. It is shown that additive manufacturing also makes it possible to control the composition gradient between a martensitic and an austenitic steel
Largiller, Grégory. "Maîtrise du frittage de matériaux céramique-métal à gradients de composition et de structure." Grenoble INPG, 2010. http://www.theses.fr/2010INPG0160.
Full textGraded materials are used to gather complementary physical and/or chemical properties into a single part. Cermet material (ceramic metal composite) developed by Rio Tinto Alcan may be used as inert anode for aluminium electrolysis. To connect these ceramic matrix materials to the current network, we propose to associate them with a conductive material in a single sintering step. Using our knowledge on powder metallurgy with microstructure analysis, thermodynamical and mechanical calculations, a new range of material called metcer (metal ceramic composite) has been developed. According to their metal phase proportion and composition, the metcer materials can be cosintered with cermets in a single sintering step. By modifying the metal phase proportion, we enabled the parts to keep joined during the whole sintering thermal cycle. The composition of oxides and metal phases change the diffusion phenomena and enable one to build a graded interface between the layers. Based on continuum mechanics, constitutive equations have been used to simulate the sintering of a cermet and a metcer. Constitutive equations have been implemented into a finite element software to identify the weak regions of bilayers parts of complex geometry. We compared numerical simulation results with optical observations made during sintering on large scale bilayers. Cracks near the interface occur at low temperature when the strain mismatch between the layers is low and the viscosities of the layers are high. Thus, the materials have a fragile behaviour. At high temperature, when the viscosities are low and the strain mismatch is high, the stresses in the vicinity of the interface are released. Combining our knowledge on the chemistry and interactions between these materials, we developed a trilayer material. This material showed up a graded interface without any crack
Schneider-Maunoury, Catherine. "Application de l’injection différentielle au procédé de fabrication additive DED-CLAD® pour la réalisation d’alliages de titane à gradients de compositions chimiques." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0260/document.
Full textSince 1984, the Functionally Graded Material (FGM) allow to create a thermal barrier and to reduce the strong discontinuities of properties between two materials of different composition. These multimaterials,whose consist of an intentional variation in the chemical composition and, consequently, modify the microstructural, chemical, mechanical and thermal properties, lead to a smooth distribution of the thermal stress. The in-situ development of these custom-made alloys is made possible by the use of additive manufacturing processes such as the DED-CLAD® powder deposition process. These processes have grown substantially since the 1980s and are optimal for the manufacture of FGM. During this industrial thesis, technical developments have been carried out to adapt the DED-CLAD® process and to allow the manufacturing of FGM. Thanks to two industrial collaborations, a full study was carried out on titanium-molybdenum and titanium-niobium alloys. These alloys make it possible, in the first case, to produce parts resistant to strong thermal stress (space sector), and in the second case to combine mechanical properties and biocompatibility (biomedical sector). The originality of this thesis rests on the study of a complete gradient, that is the addition in alloy element varied from 0% to 100%. In fact, studies reported in the literature do not mention titanium-refractory material for high levels of refractory element. Microstructural (XRD, crystallographic analysis by EBSD technique), chemical (EDS) and mechanical (microhardness, tensile test and instrumented indentation) analyses revealed an evolution of the properties along the chemical gradient. The mechanical characterization of the sample by instrumented indentation has also proved particularly relevant in the case of these multi-materials
Müller, Guillaume. "Conception, élaboration et caractérisation de matériaux de composition et de microstructure innovants pour les micro-piles à combustible à oxyde solide." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2012. http://tel.archives-ouvertes.fr/tel-00833281.
Full textSchneider-Maunoury, Catherine. "Application de l’injection différentielle au procédé de fabrication additive DED-CLAD® pour la réalisation d’alliages de titane à gradients de compositions chimiques." Electronic Thesis or Diss., Université de Lorraine, 2018. http://www.theses.fr/2018LORR0260.
Full textSince 1984, the Functionally Graded Material (FGM) allow to create a thermal barrier and to reduce the strong discontinuities of properties between two materials of different composition. These multimaterials,whose consist of an intentional variation in the chemical composition and, consequently, modify the microstructural, chemical, mechanical and thermal properties, lead to a smooth distribution of the thermal stress. The in-situ development of these custom-made alloys is made possible by the use of additive manufacturing processes such as the DED-CLAD® powder deposition process. These processes have grown substantially since the 1980s and are optimal for the manufacture of FGM. During this industrial thesis, technical developments have been carried out to adapt the DED-CLAD® process and to allow the manufacturing of FGM. Thanks to two industrial collaborations, a full study was carried out on titanium-molybdenum and titanium-niobium alloys. These alloys make it possible, in the first case, to produce parts resistant to strong thermal stress (space sector), and in the second case to combine mechanical properties and biocompatibility (biomedical sector). The originality of this thesis rests on the study of a complete gradient, that is the addition in alloy element varied from 0% to 100%. In fact, studies reported in the literature do not mention titanium-refractory material for high levels of refractory element. Microstructural (XRD, crystallographic analysis by EBSD technique), chemical (EDS) and mechanical (microhardness, tensile test and instrumented indentation) analyses revealed an evolution of the properties along the chemical gradient. The mechanical characterization of the sample by instrumented indentation has also proved particularly relevant in the case of these multi-materials
Fromentin, Jean-François. "Réalisation et comportement d'interphases à gradient de composition et de propriétés : application au matériau composite SiC/Ti." Bordeaux 1, 1997. http://www.theses.fr/1997BOR10520.
Full textLaval, Cédric. "Fabrication par pervaporation microfluidique de matériaux composites d'architecture et de composition contrôlées pour la réalisation de MEMS organiques." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0344/document.
Full textThis work deals with the making of organic MEMS within an original device, the microevaporator, coupling the MIMIC technique (Micromolding in Capillaries) and microfluidic pervaporation. It is shown how the pervaporation phenomenon can be used to concentrate polymeric diluted solutions until we obtain composite materials into geometries with typical dimensions about 25 μm x 100 μm x 10 mm. We showed that it is possible to establish models which describe this growth in excellent agreement with experiments and the study of the influence of different parameters (concentration, geometry...) upon the growth thus allowed us to predict the growth velocities of those composite materials. Two systems have been made associated to two effects : bimetallic strip effect and piezoresistive effect in order to demonstrate a new proof of concept of a new way to make organic MEMS using microfluidics. A more complex device including microfluidic valves allowed us to encode materials with a gradient of composition within their largest dimension from colloidal cristals to polymeric materials
Renaux, Jeoffrey. "Ιnfluence de l'austénite et des impuretés sur le vieillissement thermique de la ferrite des aciers inοxydables austénο-ferritiques." Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMR026.
Full textAusteno-ferritic steels used in the design of various cast components (valves, pump bodies, etc.) in the primary circuit of second-generation nuclear power plants exhibit changes in their mechanical properties at service temperatures between 285°C and 325°C. These two-phase alloys, which combine ferrite and austenite, exhibit a microstructural hardening that occurs within the ferrite. This hardening is associated with two phase transformations, including, firstly, spinodal decomposition into an α phase rich in Fe and an α' phase rich in Cr, and secondly, the formation of a G phase rich in alloying elements Ni, Si, Mn, Mo. While austeno-ferritic steels containing Mo present a greater hardening than steels without Mo, the observation of a purely ferritic steel containing Mo, on the contrary, showed less hardening due to the absence of G phase precipitation. The aim of this study was to understand the influence of austenite on the aging of ferrite, which was the main hypothesis put forward to explain the reason for the lesser hardening of purely ferritic steel. To confront this hypothesis, the use of an electrochemical method allowed for the selective dissolution of austenite to obtain austenite-free ferrite, with the same composition, morphology, and thermo-mechanical history as the ferrite with austenite. The study by atom probe tomography of the microstructural evolution of these two ferrites, as well as that of a purely ferritic steel under aging conditions of 1,000 hours at 400°C, allowed for the investigation and understanding of the following points:- The results showed that the presence of austenite induces residual compressive stresses on the ferrite, which are not the cause of the enhanced aging of austeno-ferritic steels, as no significant difference in microstructure was observable between ferrites with and without austenite.- The characterization of the effect of the Cr/Ni composition gradient near the α/γ interfaces on the microstructural evolution of ferrite was conducted. The evolution of Cr and Ni concentrations towards the α/γ interfaces does not impact the spinodal decomposition but affects the formation of the G phase, with the main effect being a significant decrease in nanoparticle density towards the α/γ interfaces.- As residual stresses are not the cause of the difference in aging between purely ferritic and austeno-ferritic steels, the hypothesis of a chemical composition effect was considered. The results showed that the number density of G phase particles is strongly correlated with the impurity concentration in the ferrite. The absence of impurities in the ferritic alloy appears to explain the absence of G phase nanoparticles at the α/α’ interdomains and thus the lesser aging of the ferritic alloy
Kohler, Eric. "La réactivité des matériaux argileux sous gradient thermique." Phd thesis, Université d'Evry-Val d'Essonne, 2005. http://tel.archives-ouvertes.fr/tel-00009942.
Full textBooks on the topic "Matériaux à gradient de composition"
Sobczak, Jerzy, and Ludmil Drenchev. Metal based functionally graded materials: Engineering and modeling. [Saif Zone, Sharjah, U.A.E.]: Bentham eBooks, 2009.
Find full textEl Sadig Mohamed Abdalla Sharfi. Modélisation mathématique d'évolution des rivières avec prise en compte de la composition granulométrique des matériaux transportés. Grenoble: A.N.R.T. Université Pierre Mendès France Grenoble 2, 1986.
Find full textKennen, Jonathan G. Relation of environmental characteristics to the composition of aquatic assemblages along a gradient of urban land use in New Jersey, 1996-98. West Trenton, N.J: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.
Find full textKennen, Jonathan G. Relation of environmental characteristics to the composition of aquatic assemblages along a gradient of urban land use in New Jersey, 1996-98. West Trenton, N.J: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.
Find full textauthor, Yue Zhongqi, ed. Fracture mechanics in layered and graded solids: Analysis using boundary element methods. Berlin: De Gruyter/Higher Education Press, 2014.
Find full textFunctionally Graded Materials (fgms). Taylor & Francis Group, 2021.
Find full textDreher, Karolin. Composition Notebook: Seahorse Skeleton Gradient Journal Notebook Blank Lined Ruled 6x9 100 Pages. Independently Published, 2020.
Find full textHofmann, Angelika. Composition Notebook: Blue Gradient Mandala Journal Notebook Blank Lined Ruled 6x9 100 Pages. Independently Published, 2020.
Find full textFaber, Kathrin. Composition Notebook: Boxing Gradient Text Journal Notebook Blank Lined Ruled 6x9 100 Pages. Independently Published, 2020.
Find full textNoteBooks, Sappuris. Composition Notebook Lined for Students Gift 120 Pages, Mint Green Gradient Background Cover. Independently Published, 2021.
Find full textBook chapters on the topic "Matériaux à gradient de composition"
Steinhausen, Ralf, and Horst Beige. "Composition Gradient Actuators." In Piezoelectric and Acoustic Materials for Transducer Applications, 289–304. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-76540-2_14.
Full textSome, Daniel. "Composition-Gradient Multiangle Light Scattering." In Encyclopedia of Biophysics, 336–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-16712-6_770.
Full textGupta, Jugal K., Kirill Efimenko, Daniel A. Fischer, Jan Genzer, and Nicholas L. Abbott. "Orientational Anchoring of Liquid Crystals on Surfaces Presenting Continuous Gradients in Composition." In Soft Matter Gradient Surfaces, 109–28. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118166086.ch5.
Full textBasak, Pratyay, Pedro Zapata, Keith Reed, Ismael Gomez, and J. Carson Meredith. "Continuous Infusion Microchannel Approach to Generate Composition Gradients from Viscous Polymer Solutions." In Soft Matter Gradient Surfaces, 129–43. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118166086.ch6.
Full textGhorai, Mrinmoy, Soumitra Samanta, and Bhabatosh Chanda. "Scale-Invariant Image Inpainting Using Gradient-Based Image Composition." In Computer Vision, Graphics, and Image Processing, 97–108. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68124-5_9.
Full textGlöckner, Gottfried. "Separation of Copolymers by Composition through Gradient High-Performance Liquid Chromatography." In Gradient HPLC of Copolymers and Chromatographic Cross-Fractionation, 113–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-75799-0_9.
Full textMinton, Allen P. "Detection and Quantitative Characterization of Macromolecular Heteroassociations via Composition Gradient Sedimentation Equilibrium." In Analytical Ultracentrifugation, 523–32. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55985-6_26.
Full textParihar, Rityuj Singh, and Neha Verma. "The Development of Cemented Carbide with Cobalt Composition Gradient by Powder Metallurgy Method." In Lecture Notes in Mechanical Engineering, 969–76. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7787-8_77.
Full textAhmad, Zeeshan, Murtaza Hussain, Muhammad Iqbal, Shah Khalid, Habib Ahmad, and Shujaul Mulk Khan. "Weed Vegetation in Maize Crop of the Shahbaz Garhi, District Mardan; Gradient of Diversity and Species Composition." In Biodiversity, Conservation and Sustainability in Asia, 657–79. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-73943-0_36.
Full textLodhiyal, L. S., Neelu Lodhiyal, and G. C. Pathak. "Plant Diversity and Vegetation Composition of Shiwalik Forests Along an Altitudinal Gradient in the Kumaun Himalaya, India." In Globalization and Marginalization in Mountain Regions, 205–27. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-32649-8_16.
Full textConference papers on the topic "Matériaux à gradient de composition"
Jones, Steven M. "Gradient composition sol-gel materials." In Symposium on Integrated Optoelectronics, edited by Bruce S. Dunn, Edward J. A. Pope, Helmut K. Schmidt, and Masayuki Yamane. SPIE, 2000. http://dx.doi.org/10.1117/12.384345.
Full textZhang, Wei, and Wai-Kuen Cham. "Gradient-directed composition of multi-exposure images." In 2010 IEEE Conference on Computer Vision and Pattern Recognition (CVPR). IEEE, 2010. http://dx.doi.org/10.1109/cvpr.2010.5540168.
Full textLivchits, Vladislav Ya. "Structure and Composition of Grin Glasses for Ion Exchange." In Gradient-Index Optical Imaging Systems. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/giois.1994.pd2.
Full textKilinc, Muhammed, Alireza Jalouli, Peijian Wang, Christian Neureuter, Hao Zeng, and Tim Thomay. "2D Gradient Composition Alloys: Excitonic and Dielectric Properties." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/cleo_at.2020.jw2d.19.
Full textMagnaudeix, Amandine, and Eric Champion. "Développement de céramiques pour l'ingénierie tissulaire osseuse : de la synthèse de matériaux à l’évaluation biologique." In Les journées de l'interdisciplinarité 2022. Limoges: Université de Limoges, 2022. http://dx.doi.org/10.25965/lji.301.
Full textGhazanfari, Amir, and Ming C. Leu. "Composition Optimization for Functionally Gradient Parts Considering Manufacturing Constraints." In ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/msec2014-3960.
Full textHoude-Walter, S. N. "Glass structure and ion exchange." In Gradient-Index Optical Imaging Systems. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/giois.1994.gtue1.
Full textDong, Changsheng, Minlin Zhong, Wenjin Liu, Minxing Ma, and Hongjun Zhang. "Laser deposition of Ti6Al4V-316L composition gradient structure: Challenge on intermetallics." In ICALEO® 2009: 28th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Laser Institute of America, 2009. http://dx.doi.org/10.2351/1.5061595.
Full textMartinez Sosa, P., F. Peterse, and J. Middelburg. "Organic Matter Composition and Distribution in a Simulated Estuarine Salinity Gradient." In IMOG 2023. European Association of Geoscientists & Engineers, 2023. http://dx.doi.org/10.3997/2214-4609.202333023.
Full textAssaud, Loïc. "Le stockage de l'énergie électrique dans les batteries à ions lithium. Une histoire d'interfaces." In MOlecules and Materials for the ENergy of TOMorrow. MSH Paris-Saclay Éditions, 2021. http://dx.doi.org/10.52983/ohqv8601.
Full textReports on the topic "Matériaux à gradient de composition"
Smith, G. P. Structure and Composition of Vegetation on Longleaf Plantation Sites Compared to Natural Stands Occurring Along an Environmental Gradient at the Savannah River Site. Office of Scientific and Technical Information (OSTI), October 2000. http://dx.doi.org/10.2172/807720.
Full textWells, Aaron, Tracy Christopherson, Gerald Frost, Matthew Macander, Susan Ives, Robert McNown, and Erin Johnson. Ecological land survey and soils inventory for Katmai National Park and Preserve, 2016–2017. National Park Service, September 2021. http://dx.doi.org/10.36967/nrr-2287466.
Full textRelation of Environmental characteristics to the composition of aquatic assemblages along a gradient of urban land use in New Jersey, 1996-98. US Geological Survey, 2002. http://dx.doi.org/10.3133/wri024069.
Full text