27,819 research outputs found
OU SHAREOK Proxy Licensing Agreement
No full textThose uploading work to SHAREOK on behalf of others must have written permission from the author(s) granting a license via the SHAREOK Proxy Licensing Agreement. This written permission will be uploaded with its associated file(s) and hidden from public view. For additional information see the “Student Work in SHAREOK” section of SHAREOK Institutional Repository: OU Policies and Guidelines at https://shareok.org/handle/11244/330071; however, this Proxy Licensing Agreement is not limited to student work
Reduced Translocation of Glyphosate and Dicamba in Combination Contributes to Poor Control of Kochia scoparia: Evidence of Herbicide Antagonism
No full textCitation: Ou, Junjun, Curtis R. Thompson, Phillip W. Stahlman, Nicholas Bloedow, and Mithila Jugulam. “Reduced Translocation of Glyphosate and Dicamba in Combination Contributes to Poor Control of Kochia Scoparia : Evidence of Herbicide Antagonism.” Scientific Reports 8, no. 1 (March 28, 2018): 1–11. https://doi.org/10.1038/s41598-018-23742-3.Kochia scoparia is a troublesome weed across the Great Plains of North America. Glyphosate and dicamba have been used for decades to control K. scoparia. Due to extensive selection, glyphosate- and dicamba-resistant (GDR) K. scoparia have evolved in the USA. Herbicide mixtures are routinely used to improve weed control. Herbicide interactions if result in an antagonistic effect can significantly affect the management of weeds, such as K. scoparia. To uncover the interaction of glyphosate and dicamba when applied in combination in K. scoparia management the efficacies of different doses of glyphosate plus dicamba were evaluated under greenhouse and field conditions using GDR and a known glyphosate- and dicamba-susceptible (GDS) K. scoparia. The results of greenhouse and field studies suggest that the combination of glyphosate and dicamba application controlled GDS, but glyphosate alone provided a better control of GDR K. scoparia compared to glyphosate plus dicamba combinations. Furthermore, investigation of the basis of this response suggested glyphosate and dicamba interact antagonistically and consequently, the translocation of both herbicides was significantly reduced resulting in poor control of K. scoparia. Therefore, a combination of glyphosate plus dicamba may not be a viable option to control GDR K. scoparia
Corrigendum to “General reduced vehicle model for simulating truck-bridge pier collisions” [Dev. Built. Environ. 16 (2023) 100233] (Developments in the Built Environment (2023) 16, (S2666165923001151), (10.1016/j.dibe.2023.100233))
No full textThe authors regret there were two errors in the authors' affiliation in the published article. First, the affiliation of the first author (Daogang Ou) should only be the School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China. Second, the corresponding author (Lin Chen) should have two affiliations; the first one should be: School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China; and the second one should be: Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education, Hunan University, Changsha, 410082, China. The authors would like to apologise for any inconvenience caused
"Popular author, poet to read at OU"
No full textNews article"One of America's most popular writers will visit OU Friday, Oct. 18. Marge Piercy, award winning author and poet, will read from her poetry at 4 p.m. in 201 Dodge Hall.
Retradução comentada de Corinne ou l'Italie de Mme de Staël
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Estudos da Tradução, Florianópolis, 2014.Esta tese, vinculada à linha da "Teoria, crítica e história da tradução" objetiva a retradução comentada de Corinne ou l'Italie (1807) de Madame de Staël. No primeiro capítulo, descrevem-se a vida e as obras da autora, com ênfase para Corinne ou l'Italie, que foi traduzida e retraduzida em outras línguas, principalmente o inglês, italiano e alemão. Em seguida, no capítulo 2, apresenta-se a primeira tradução para o português do Brasil Corina ou a Itália (1945, Edições Cultura). Como terceira etapa, comenta-se a retradução com base nas reflexões teóricas de Berman, Pym, Venuti, Gambier. Apresentam-se exemplos dos aspectos semânticos, culturais, estilísticos presentes ao longo dos XX livros, a partir do original e da retradução. Os comentários do processo de tradução permitem uma frutífera troca literária e cultural e a tradução, o estudo e conhecimento da obra de Madame de Staël, por consequência, enriquecem o cânone da literatura francesa traduzida no Brasil.Abstract : This thesis, linked to the research field "Theory, criticism and history of translation" attempts to do a commented retranslation of Mme de Staël's Corinne ou l'Italie (1807). The first chapter describes the life and the works of the author, with emphasis on Corinne ou l'Italie, which was translated and retranslated into other languages, mainly English, Italian and German. In Chapter 2, the first translation of Corinne ou l'Italie into Brazilina Portuguese (1945, Cultura Printings) is presented. In chapter 3 the retranslation is analyzed through comments based on theoretical reflections of Berman, Pym, Venuti and Gambier. Examples of semantic, cultural and stylistics aspects of the XX books (original and retranslated version) are presented. The comments of the translation process allow a rich literary and cultural exchange. As well as a deeper investigation about Madame de Staël's work enriches the standard of French literature in Brazil
Notes Regarding the Customs of Marriage of the Yao Tribe
No full textAuthor was member of Yao (Mien) ethnic group and wrote this paper in Lao script. Undated
Forecast Uncertainty Quantification using Monte Carlo, Polynomial Chaos Expansion and Unscented Transformation Methods
No full textIn the context of prediction science, the sources of uncertainty can be from the uncertainties of the experiments, modeling, model inputs, numerical analysis, etc. This study concentrates on quantifying the forecast uncertainty arising from the propagation of the uncertainties in the model inputs to the dynamical model. The uncertainties in the inputs include the randomness in (1) the initial conditions, (2) the forcing term (including both the external forcing and the boundary conditions), and (3) randomness in the parameters of the model. In order to quantify the uncertainties in the forecast, three uncertainty quantification (UQ) methods are studied, namely classical Monte Carlo (MC), polynomial chaos (PC) expansion and unscented transformation (UT). Using MC as the benchmark, two dynamical models are used in this study to examine the performance of PC expansion and UT. One is the low order (two components) spectral solution to the nonlinear advection equation, and the other one is the five-variable mixed-layer model which is used to describe the return flow event over the Gulf of Mexico during the cool season (between November and March) every year. The experimental results and the comparisons with MC have shown that both PC and UT can provide good estimates on the statistical information relating to the forecast, for example, the mean, variation (or standard deviation), covariance. The approach of UT utilizes a set of deterministically chosen sigma points to propagate the uncertainties contained in the inputs through the dynamical model. Only the first two moments of the forecast can be estimated by UT. Different from UT, the PC expansion represents the stochastic process in the form of a series expression (hence a surrogate approximation) in terms of the orthogonal polynomials whose type depends on the probability distribution of the random inputs. Ensemble forecast can be achieved by sampling the random variable used in the PC expansion. Furthermore, the histogram of the forecast can be constructed using the ensemble forecast, and then one can estimate the probability density function (PDF) of the forecast. What’s more, PC expansion can also give estimates on the statistics of higher order moments. The application of PC and UT in quantifying the forecast uncertainties in large scale system, the combination with data assimilation techniques and its real applications, and the ability to deal with nonGaussian distributions will be some of the topics for future study
The mechanism(s) and management of dicamba resistance in kochia (Kochia scoparia)
No full textDoctor of PhilosophyDepartment of AgronomyMithila JugulamKochia (Kochia scoparia (L.) Schrad), one of the most troublesome weeds in the North American Great Plains, including Kansas (KS), has become a significant concern in croplands ever since the evolution and spread of glyphosate resistance in this weed. Dicamba, an important synthetic auxin herbicide, is a useful substitute for managing glyphosate-resistant (GR) broadleaf weeds. As a result of extensive and intensive use, kochia populations have also developed resistance to dicamba. However, the precise mechanism(s) of dicamba resistance in kochia is still unknown. In the first part of this dissertation, the physiological, biochemical and genetic basis of dicamba resistance in dicamba-resistant (DR) kochia from KS was investigated. The results suggest that the mechanism of dicamba resistance in this kochia is not due to decreased absorption, reduced translocation or enhanced detoxification of dicamba. In contrary, reduced translocation of dicamba was found to contribute to the dicamba resistance in DR kochia from Colorado (CO). Further investigation of DR kochia from KS revealed a possible role of single nucleotide polymorphism (SNP) in TIR1 (the receptor gene of auxin) in the dicamba resistance evolution. Genetic analyses of data from inheritance studies demonstrated that an incomplete dominant nuclear gene controls the dicamba resistance in kochia from KS. Also, it was found that the genes controlling dicamba resistance in kochia from KS and CO are not linked. Similarly, although, GR and DR traits were found to be controlled by two distinct single dominant genes, they appear to co-exist in many kochia populations from KS. Nonetheless, these two genes were also found not to be linked.
The second part of this dissertation focused on the development of reliable tools for the management of DR and/or GR kochia. The following experiments were conducted under greenhouse and field conditions in KS: a) the effect of temperature stress on the efficacy of dicamba or glyphosate; b) efficacy of dicamba and glyphosate when applied in combination; and c) efficacy of dicamba when used as pre-emergence (PRE) herbicide. The results suggest that the efficacy of both dicamba and glyphosate on kochia can be improved when applied at cooler temperature conditions. Also, it was found that the dicamba and glyphosate tank-mix should not be recommended to manage kochia, especially DR kochia, due to significant antagonistic interaction when applied in combination. On the other hand, application of dicamba as PRE compared to the postemergence application, was found to improve kochia control including DR kochia. Overall, this dissertation provided several novel outcomes both in basic and applied aspects of dicamba resistance in kochia
Prominent Bone Marrow Metastases Without Concurrent Intra-Chest Metastasis in a Case of Cardiac Angiosarcoma
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