1,487 research outputs found

    Altruistic CEOs can be as risky as greedy ones

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    The most successful leaders exhibit moderate self-interest, argue Katalin Takacs-Haynes, Matthew Josefy and Michael A. Hit

    Mechanistic Investigations into the Palladium-Catalyzed Decarboxylative Allylic Alkylation of Ketone Enolates Using the PHOX Ligand Architecture

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    Palladium-catalyzed asymmetric allylic alkylation has become a large and important field for chemical synthesis. Many methodologies in this field offer mild conditions under which challenging and important molecular features can be reliably synthesized, including chiral all-carbon quaternary stereocenters. As a result, palladium- catalyzed asymmetric allylic alkylation has found significant use in total synthesis, and growing use in industry. While the general process of palladium-catalyzed asymmetric allylic alkylation has been studied for decades, there have been a number of recent modifications and developments, such as asymmetric versions of decarboxylative allylic alkylation procedures that are not yet well understood. The development of future implementations and improvements to palladium-catalyzed asymmetric allylic alkylation and related methodologies is expected to be facilitated by a better understanding of these more recent developments, and thus further mechanistic investigation is warranted. Reported herein is a set of investigations into the palladium-catalyzed decarboxylative asymmetric allylic alkylation of ketone enolates using the PHOX ligand architecture. By monitoring the reaction via 31P NMR, a series of previously unidentified key intermediates is discovered. Two representatives of these key intermediates are isolated and characterized. The solution behavior of these species under reaction-like conditions is studied along with a few novel and related complexes. The role of these intermediates and their impact on the behavior of the reaction and product formation is discussed. Previously confounding experimentally observed behavior for this methodology is rationalized via the properties elucidated for these discovered intermediates.</p

    Book review: The law relating to international banking- Andrew Haynes 2nd Edn, Bloomsbury Professional 2018 (ISBN 978 1 78043 219 9)

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    © 2019 The Author. Published by Law Research Centre at the University of Wolverhampton. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link on the publisher’s website: https://www.wlv.ac.uk/media/departments/faculty-of-social-sciences/documents/wolverhampton-law-journal/edition-2/9.-Matthew-Barnes.pd

    Reading Matthew by the Dead Sea: Matthew 8:5-13 in Light of P. Yadin 11

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    The archive of the Judean woman Babatha, with its 35 legal papyri in Aramaic and Greek (P. Yadin 1-35), which was hidden by her in a cave on the western side of the Dead Sea in 135 CE and rediscovered in 1961, offers unique insights into the social world of the region from 94-132 CE. This is because legal documents reflect significant opportunities and challenges in people's lives and frequently bring to the surface underlying social issues and pressures. Babatha's documents, which reflect lively interactions between Judeans, Nabateans and Romans across a wide range of situations, do precisely this. They allow us better to understand the context in which New Testament texts appeared and how they made sense to their original audiences. Matthew's Gospel, with its strong interest in Judean/non-Judean relationships, is particularly susceptible to such treatment. In this article, P. Yadin 11, a remarkable document in Greek from 124 CE recording a loan of 60 denarii from a Roman centurion stationed at En-gedi to Babatha's second husband, is analysed for what it reveals about likely understandings of centurions in that setting. The findings of this investigation are then applied to Matthew 8:5-13 in the interests of a socially realistic interpretatio

    George E. Haynes, circa 1945

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    George E. Haynes (1880-1960), Class of 1903, was a sociologist, author, educator. Haynes was the first black graduate of a School of Social Work (1910) and the first black to receive a Ph.D. from Columbia University

    Donald Frederick Haynes Family

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    Donald Frederick Haynes stands with his wife Lilah Mae (Baer) and daughter Dona Louise. Pastor D. F. Haynes sang in a quartet at the 1946 General Conference Session praise service on the morning of June 14. Donald was the son of evangelist and author Carlyle Boynton Haynes.https://scholarsrepository.llu.edu/general-conference-1946-gallery/1011/thumbnail.jp

    Spring 2020 Regional Economic Indicators Forum Brochure

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    Haynes, Monica; Chiodi Grensing, Gina; Hockert, Matthew; College of St. Scholastica; University of Wisconsin-Superior. (2020). Spring 2020 Regional Economic Indicators Forum Brochure. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/225390

    Roy Haynes: the early years

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    In four parts, this thesis covers the early years of the life, development, and career of Roy Haynes beginning with his ancestry and family history in Boston, to the early 1950's in New York, by which time he had become an established fixture on the scene of New York’s new evolution of African American music called bebop. The purpose of this study is to magnify the genesis of one of America’s treasured artists – taking a glimpse into the dawning of his influences and musical exposure, and later highlighting his gift in expressive versatility which carried him throughout his career, displaying the gradual making of an internationally renowned artist. Part one is comprised of four chapters, and includes an introduction and biographical information. Chapter one covers his genealogy, taking a step back to identify the sources of his African and Caribbean roots that help to inform who he is personally and musically. Chapter two sheds light upon his social and familial development in the historical context around and between World War I and The Great Depression. It touches upon the social, cultural, and economic existence of the immigrants who found themselves in and around the communities of Lower Roxbury. This section shows when and how Haynes’s talent emerged, and how through his gift he was able to build a sound reputation as a solid musician around New England. From that reputation, which traveled all the way to New York, chapter three continues with Haynes’s professional career in Boston, then leaps to New York City via a one-way train ticket to join the famed Luis Russell Orchestra. In chapter four, the author explains plans for additional research, and the continued synthesis and distillation thereof toward the eventual publication of biographical literature for both adults and children. Continuing with part two of this work, chapter five includes musical analyses highlighting Haynes’s contributions on three particular recordings between 1945 and 1949. In part three, chapters six through fourteen feature interview transcripts from nine individuals who provide an overview of expert insight spanning several generations on a variety of cultural, musical, and stylistic influences and contributions of Haynes’s artistry. Finally, in part four, there are several appendices which represent visual images on topics approached throughout, and in support of the narrative.M.A.Includes bibliographical referencesby Leslie K. Hayne

    Predictive design of novel nickel-based superalloys beyond Haynes 282

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    Nickel-based superalloys are in great demand for harsh-service conditions involving high temperatures and oxidative environments. Haynes 282 stands out due to its excellent high-temperature properties and easy fabricability. However, the upper operation temperature of Haynes 282 is limited due to its relatively low liquidus temperature. Equipped with high-fidelity density-functional theory calculations and high-throughput experimentation methodology, we explored new compositional spaces that exhibit higher liquidus temperature and higher strength. While maintaining the manufacturability, the newly designed alloy shows improved strength and ductility at room temperature and better oxidation resistance up to 800°C. The new compositions showcase a minor change in the refractory and metalloid content can significantly impact the mechanical and oxidation performance of superalloys.This is a pre-proof version of the article Published as Ouyang, Gaoyuan, Olena Palasyuk, Prashant Singh, Pratik K. Ray, Vinay Deodeshmukh, Jun Cui, Duane D. Johnson, and Matthew J. Kramer. "Predictive design of novel nickel-based superalloys beyond Haynes 282." Acta Materialia (2024): 120045. doi: https://doi.org/10.1016/j.actamat.2024.120045. © 2024 Elsevier. CC BY-NC-N
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