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Littérature scientifique sur le sujet « Isothermality »

Auteur : Grafiati

Publié le 2 juin 2025

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Isothermality"

Das, GC, and B. Karmakar. "Characteristics of the Solitary Waves in Multicomponent Plasmas." Australian Journal of Physics 43, no. 1 (1990): 65. http://dx.doi.org/10.1071/ph900065.

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We have investigated ion-acoustic solitary waves in a multicomponent plasma. The study shows an interaction of the negatively charged particles with the solitary waves, due to which interesting physical behaviour of the solitary waves is observed. Moreover, the isothermality and the non-isothermality of the plasma exhibit different soliton-type solutions and a transition of the soliton's behaviour can be shown through the changes of the non-isothermality in the plasma.

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Landi, E., and J. A. Klimchuk. "ON THE ISOTHERMALITY OF SOLAR PLASMAS." Astrophysical Journal 723, no. 1 (2010): 320–28. http://dx.doi.org/10.1088/0004-637x/723/1/320.

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Kuo, Ping-Hung, Chorng-Yuan Hwang, and Wing-Huen Ip. "Non-isothermality on the Sunyaev–Zel’dovich effect." New Astronomy 10, no. 2 (2004): 145–55. http://dx.doi.org/10.1016/j.newast.2004.07.003.

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Inagaki, Yuichiro, Tatsushi Suginohara, and Yasushi Suto. "Reliability of the Hubble-Constant Measurement Based on the Sunyaev-Zel’dovich Effect." Publications of the Astronomical Society of Japan 47, no. 4 (1995): 411–113. https://doi.org/10.1093/pasj/47.4.411.

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Abstract The values of the Hubble constant estimated based on the Sunyaev-Zel’dovich effect seem to be systematically lower than those obtained by optical observations. We have investigated possible sources of biases and uncertainties when using the Sunyaev-Zel’dovich effect, including the peculiar velocity of clusters, finite extension of clusters, non-sphericity and sub-clustering of the cluster gas distribution, and non-isothermality. We examined these problems on the basis of analytical arguments, observational data of X-rays, and numerical simulation results, finding that the non-isotherm

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Hughes, John P., Koujun Yamashita, Yoshiharu Okumura, Hiroshi Tsunemi, and Masaru Matsuoka. "Isothermality of the gas in the Coma cluster." Astrophysical Journal 327 (April 1988): 615. http://dx.doi.org/10.1086/166219.

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Newton, Mark A., Stefano Checchia, Amy J. Knorpp, et al. "On isothermality in some commonly used plug flow reactors for X-ray based investigations of catalysts." Catalysis Science & Technology 9, no. 12 (2019): 3081–89. http://dx.doi.org/10.1039/c9cy00464e.

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We compare two reactor setups commonly used to make operando measurements of catalyst behavior using X-rays in terms of the degree to which they may be considered to yield radial and axial isothermality.

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Shewen, E. C., K. G. T. Hollands, and G. D. Raithby. "The Measurement of Surface Heat Flux Using the Peltier Effect." Journal of Heat Transfer 111, no. 3 (1989): 798–803. http://dx.doi.org/10.1115/1.3250754.

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Calorimetric methods for measuring surface heat flux use Joulean heating to keep the surface isothermal. This limits them to measuring the heat flux of surfaces that are hotter than their surroundings. Presented in this paper is a method whereby reversible Peltier effect heat transfer is used to maintain this isothermality, making it suitable for surfaces that are either hotter or colder than the surroundings. The paper outlines the theory for the method and describes physical models that have been constructed, calibrated, and tested. The tested physical models were found capable of measuring

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Amissah, Lucy, Godefridus M. J. Mohren, Frans Bongers, William D. Hawthorne, and Lourens Poorter. "Rainfall and temperature affect tree species distribution in Ghana." Journal of Tropical Ecology 30, no. 5 (2014): 435–46. http://dx.doi.org/10.1017/s026646741400025x.

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Abstract:We evaluated the relative importance of annual rainfall, temperature and their seasonality to tree species distribution in Ghana. We used species presence/absence data from 2505 1-ha plots systematically distributed over Ghana's forests. Logistic regression was used to determine species responses to four climatic variables generated from the Worldclim database. The distribution of 95% of 20 species was significantly associated with annual rainfall, 60% with rainfall seasonality, 45% with isothermality and 40% with temperature seasonality. Annual rainfall explained on average most of t

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BENNEMA, S. C., M. B. MOLENTO, R. G. SCHOLTE, O. S. CARVALHO, and I. PRITSCH. "Modelling the spatial distribution of Fasciola hepatica in bovines using decision tree, logistic regression and GIS query approaches for Brazil." Parasitology 144, no. 13 (2017): 1677–85. http://dx.doi.org/10.1017/s0031182017000786.

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SUMMARYFascioliasis is a condition caused by the trematode Fasciola hepatica. In this paper, the spatial distribution of F. hepatica in bovines in Brazil was modelled using a decision tree approach and a logistic regression, combined with a geographic information system (GIS) query. In the decision tree and the logistic model, isothermality had the strongest influence on disease prevalence. Also, the 50-year average precipitation in the warmest quarter of the year was included as a risk factor, having a negative influence on the parasite prevalence. The risk maps developed using both technique

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Guell, Oscar A., James A. Holcombe, and Cornelius J. Rademeyer. "Effect on electrothermal atomization signals of contoured tube shapes and isothermality." Analytical Chemistry 65, no. 6 (1993): 748–51. http://dx.doi.org/10.1021/ac00054a016.

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Thèses sur le sujet "Isothermality"

Leiro, Alejandro. "Wear and fatigue properties of isothermally treated high-Si steels." Licentiate thesis, Luleå tekniska universitet, Materialvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26642.

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In recent years steels containing Si contents of 1,5% or more have been isothermally transformed in order to obtain a microstructure consisting of bainitic ferrite laths and retained austenite. The refined microstructure and presence of retained austenite has allowed the manufacture of steels with high tensile strength and considerable elongation. The work in this thesis is motivated by the need for more knowledge, especially regarding wear and fatigue properties before they can be used in engineering applications.In this work the rolling-sliding wear resistance and fatigue strength of ausferr

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Siklawi, Charbel. "Large eddy simulation (2D) using vortex-in-cell and filtered density function for isothermally reacting and thermally stratified mixing layers." Thesis, University of Ottawa (Canada), 2009. http://hdl.handle.net/10393/28157.

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A large eddy simulation based on the filtered vorticity transport equation has been coupled with the filtered mass weighted density function transport equation. The filtered vorticity transport has been formulated using the diffusion-velocity method and then solved using the vortex-in-cell scheme in conjunction with both Smagorinsky and dynamic eddy viscosity subgrid scale models for an anisotropic flow. The transport equation for filtered mass weighted density function is solved using the Lagrangian Monte-Carlo method. The methodology has been tested on both chemically reacting with no heat r

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Pereira, David John. "Isothermality: making speculative optimizations affordable." Thesis, 2007. http://hdl.handle.net/1828/292.

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Partial Redundancy Elimination (PRE) is a ubiquitous optimization used by compilers to remove repeated computations from programs. Speculative PRE (SPRE), which uses program profiles (statistics obtained from running a program), is more cognizant of trends in run time behaviour and therefore produces better optimized programs. Unfortunately, the optimal version of SPRE is a very expensive algorithm, of high-order polynomial time complexity, and unlike most compiler optimizations, which run effectively in linear time complexity over the size of the program that they are optimizing. Thi

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Ghosh, Gautam. "kinetics and plate dimensions of isothermally formed martensite in An-Fe-Ni-Mn alloy." Thesis, 1985. http://localhost:8080/xmlui/handle/12345678/2875.

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Yang, Shu Jung, and 楊書榮. "An experimental investigation of liquid solidification and melting around isothermally cooled tube bundles in crossflow." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/31105532364767279375.

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Chapitres de livres sur le sujet "Isothermality"

Uzyanbaev, Ravil M., Yury A. Poveshchenko, Viktoriia O. Podryga, et al. "Using Parallel Technologies to Calculate Fluid Dynamic Processes in a Fractured-Porous Reservoir Taking into Account Non-isothermality." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-49432-1_23.

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Lopez-Hirata, Victor M., Hector J. Dorantes Rosales, Erika O. Avila-Davila, and Maribel L. Saucedo-Muñoz. "Phase Decomposition in Isothermally-Aged Fe-Cr Alloys." In Supplemental Proceedings. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118357002.ch73.

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Sharma, Dhruv Kumar, Basanta Kumar Rana, Jitendra Kumar Patel, Prakash Ghose, and Swarup Kumar Nayak. "Thermofluidic Analysis Around an Isothermally Heated Rotating Sphere." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1080-5_15.

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Jha, Ambuj Amitab, and Amit Agrawal. "Low Peclet Gaseous Flows through Isothermally Heated Circular Pipe." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6970-6_73.

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Sha, Bibhu Bhusan, Rajiva Lochan Mohanty, Dishant Chandrakant Patel, and Mihir Kumar Das. "Thermo-Hydraulic Evaluation of Isothermally Heated Bluff Bodies with Different Shapes." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-7827-4_32.

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Kim, C. S., J. H. Kang, Jai Won Byeon, and S. I. Kwun. "Microstructural Evaluation of Isothermally Aged 12Cr Steel by Magnetic Property Measurement." In Fracture and Damage Mechanics V. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-413-8.1253.

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Soriano-Vargas, Orlando, Hector J. Dorantes-Rosales, Maribel L. Saucedo-Muñoz, Victor M. Lopez-Hirata, Susana Lezama-Alvarez, and Erika O. Avila-Davila. "Coarsening of β' Precipitates in an Isothermally-Aged Fe75-Ni10-Al15Alloy." In Supplemental Proceedings. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118062173.ch71.

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Luo, Quanshun, Matthew Kitchen, Vinay Patel, Martin Filleu, and Dave Owens. "Partial-Isothermally-Treated Low Alloy Ultrahigh Strength Steel With Martensitic/Bainitic Microstructure." In HSLA Steels 2015, Microalloying 2015 & Offshore Engineering Steels 2015. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119223399.ch50.

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Luo, Quanshun, Matthew Kitchen, Vinay Patel, Martin Filleul, and Dave Owens. "Partial-Isothermally-Treated Low Alloy Ultrahigh Strength Steel with Martensitic/Bainitic Microstructure." In HSLA Steels 2015, Microalloying 2015 & Offshore Engineering Steels 2015. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48767-0_50.

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Scola, Daniel A., Bruce L. Laube, and John H. Vontell. "Interface Characteristics of Isothermally Aged High Temperature Graphite Fiber/PMR-15 Composites." In Controlled Interphases in Composite Materials. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-7816-7_2.

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Actes de conférences sur le sujet "Isothermality"

Mannan, Sarwan, and Steve McCoy. "High Temperature Properties of As-Produced and Isothermally Exposed 800 Series Alloys and Weldments." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00516.

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Abstract The Fe-Ni-Cr 800 series alloys, which are commonly used materials of construction in the petrochemical industry, were examined following high-temperature isothermal exposure. Mill annealed alloys were cold worked prior to welding to simulate fabrication conditions. Weldments were tested in the as produced and stress-relieved conditions to evaluate the effect of stress–relief. The levels of alloying additions within the specified chemical composition and variation in grain size were found to greatly influence the properties. Data is presented on the tensile, stress rupture, and microst

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Weber, T., and M. Schütze. "Developement of Protective Coatings for Reducing Environments at High Temperatures." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99072.

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Abstract Different spray-coatings based on TiAl and TiSi2 as well as commercial dip-coatings were applied to low-alloy F12 steel and a 18Cr1Al steel and tested in an Ar-5%H2-1%H2S atmosphere at a temperature of 700°C, which is representative of conditions prevailing in several industrial gasification processes. Tests were run isothermally for up to 1000 hrs. Certain coatings show a remarkable improvement of corrosion resistance.

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Howes, T. E., P. M. Rogers, J. A. Little, and I. M. Hutchings. "Erosion-oxidation of Mild Steel in a Temperature Gradient." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98194.

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Abstract Thinning of heat-exchanger lubes by erosion-corrosion has been a problem in fluidized bed combustors (FBCs), particularly at lower metal temperatures where thicker, mechanically protective oxide scales are unable to form. Many laboratory-scale tests have shown a decrease in material loss al higher temperatures, similar to that observed in FBC boilers, but also show a decrease in wastage al low temperatures (e.g. 200°C) which has not been detected in boilers. It has been suggested that this difference is due to the laboratory tests being carried out isothermally, whereas in a FBC boile

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Schütze, M., and M. Nöth. "Protective Coatings for High Temperatures and High Sulfur - Low Oxygen Environments." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98188.

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Abstract Different coatings based on MoSi2, TiAl or FeSi were applied by air plasma spraying (APS) to low alloy steel and tested at 700°C in an atmosphere of pS2 = 10-6 bar and pO2 = 4.2 x 10-27 bar which is representative for atmospheres in certain industrial gasification processes. Tests were run isothermally and with thermal cycling for times up to 1000 hrs. In particular coatings based on TiAl provide a significant improvement of sulfidation resistance.

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Mannan, S. K., and C. S. Tassen. "Effect of Chemical Composition, Cold Work, and Isothermal Exposure on the Properties of Alloys UNS N08800, UNS N08810 and UNS N08811." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99056.

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Abstract Alloys 800(UNS N08800), 800H(UNS N08810), and 800HT†(UNS N08811) are extensively used in industrial heating, power plants, and petrochemical industries due to their good corrosion resistance. Under certain high temperature service conditions M23C6-type carbides and γ′ are formed which affect the mechanical properties. This study covers microstructural analysis, room temperature tensile, room temperature impact, and high temperature tensile properties of as-produced and isothermally exposed laboratory and commercial materials. The effect of composition and cold work on the stress ruptu

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Menendez, H., and T. M. Devine. "The Sensitization Behavior of 308 Duplex Stainless Steel Welds with Lathy Ferrite." In CORROSION 1987. NACE International, 1987. https://doi.org/10.5006/c1987-87099.

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Abstract The sensitization behavior of 5 autogenous T.I.G. welds with lathy ferrite microstructure was investigated by isothermally heat treating samples for various lengths of time at 550C and 600C and testing for intergranular corrosion resistance in ASTM-A262E. The welds were found to behave similarly to other welds of similar composition but which had interdendritic or vermicular ferrite. Considering the very large amounts of austenite-ferrite interfacial area present in the lathy ferrite welds, theoretical analysis predicted that such welds should be immune to sensitization. Although the

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Weber, T., C. Rosado, and M. Schütze. "Development of Coatings for Environments with High Sulfur And/or Carbon Activities at Low Oxygen Potentials." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02376.

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Abstract High velocity oxy-fuel (HVOF) thermal spray coatings of TiAl and several Al- as well as Al-Ti-cementation coatings were applied on ferritic and austenitic stainless steels and tested in a reducing sulfidizing atmosphere, under metal dusting conditions and in a sulfidizing carburizing atmosphere at a temperature of 700°C. The tests were run isothermally for up to 1000 h. The thermal spray coatings and the Al-diffusion coatings were corrosion resistant in purely sulfidizing and in metal dusting atmospheres. If a sulfidizing and carburizing environment is present only the Al-Ti-codiffusi

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Hussain, M. S. n., and Peter Elliott. "Aspects of Vanadate Slag Corrosion on Ni 50Cr and Nimonic 90 (Ni 20Cr 16.4Co 2.2Ti 2A1 1Fe) Alloys." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89526.

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Abstract Alloy performance is considered following laboratory exposure to synthetic molten slags developed from vanadium pentoxide alone, or as an 80-20% mixture of vanadium pentoxide and sodium sulfate. Test samples were exposed isothermally for times up to 100 hours at 900 C (1652 F) under flowing oxygen. The performance is characterized in terms of corrosion damage as determined from gravimetric, metallographic and conventional analytical procedures. Electronoptical techniques were of value in resolving the morphologies. Accelerated corrosion was found in the presence of the vanadic slags.

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Bakker, W. T., A. Heynen, W. Schellberg, and N. Ullrich. "Materials Performance at the PRENFLO Coal Gasification Plant." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91062.

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Abstract This paper discusses the performance of tube materials tested in the PRENFLO coal gasification plant. The tests were conducted in the PRENFLO demonstration plant at Furstenhausen, Federal Republic of Germany. Some of the alloys were supplied by EPRI and some by GKT. The alloys were tested for more than 2000 operating hours as steam superheater tubes and isothermally in the form of prestressed tensile bars and U-bends. Thickness loss measurements and microscopic evaluation of the superheater tubes indicate that the low alloy ferritic steels (&lt; 9% Cr) are only suitable for use at

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Prohaska, M., G. Tischler, G. Mori, R. Grill, and H. Hofstätter. "Corrosion Properties of Different Highly Alloyed Clad Materials for Offshore Applications Manufactured by a New Thermo-Mechanical Rolling Process." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11175.

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Abstract A new thermo-mechanical rolling process for cladded steel sheets was developed and established. In particular five highly alloyed cladding materials (PREN values from 26 to 52) were produced with varying parameters (end rolling temperature and cooling rate). All rolling conditions (including two reference samples, which were solution and isothermally annealed) were investigated by means of Streicher-test according to ASTM G28A and an electrochemical method (DL-EPR-test). SEM characterization of all investigated material conditions was done after corrosion testing to determine the type

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Rapports d'organisations sur le sujet "Isothermality"

Sela, Hanan, Eduard Akhunov, and Brian J. Steffenson. Population genomics, linkage disequilibrium and association mapping of stripe rust resistance genes in wild emmer wheat, Triticum turgidum ssp. dicoccoides. United States Department of Agriculture, 2014. http://dx.doi.org/10.32747/2014.7598170.bard.

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The primary goals of this project were: (1) development of a genetically characterized association panel of wild emmer for high resolution analysis of the genetic basis of complex traits; (2) characterization and mapping of genes and QTL for seedling and adult plant resistance to stripe rust in wild emmer populations; (3) characterization of LD patterns along wild emmer chromosomes; (4) elucidation of the multi-locus genetic structure of wild emmer populations and its correlation with geo-climatic variables at the collection sites. Introduction In recent years, Stripe (yellow) rust (Yr) caused

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