293 research outputs found
Nathaniel P. Atkinson letter to Thomas Rotch, Wheeling, May 17th, 1817
No full textNathaniel Atkinson repeats that he is unable to repay a loan to Thomas Rotch because of business failures. He asks for an extension on the loan repayment, promising that he has every intention of repaying with interest. 8.5" x 9.6" (20.6 by 24.5 cm
Nathaniel P. Atkinson letter to Thomas Rotch, Estremedura, November 4th, 1814
No full textNathaniel Atkinson assures Thomas Rotch in Hartford that he is prepared to assume responsibility for his brother's debt and monies owed Rotch. The context of the letter is unclear. 8.5" x 9.8" (20.6 by 24.9 cm
Nathaniel P. Atkinson letter to Thomas Rotch, November 22nd, 1819
No full textNathaniel Atkinson inquires after cloth promised to him by Thomas Rotch who has neglected to respond in a timely manner. Atkinson, seemingly at the end of his rope with Rotch's failure to deliver his order, informs Rotch that he will not be able to sell the cloth this winter. 7.6" x 12.5" (19.4 by 31 cm
Nathaniel P. Atkinson letter to Thomas Rotch, Wheeling, April 14th, 1816
No full textA note to Thomas Rotch about repayment of a loan. Atkinson informs Rotch that he intends to repay what is due and although currency was in limited supply, he has no intention of skipping his responsibility to Rotch. 8.12" x 6.2" (20.7 by 15.7 cm
N.P. Atkinson letter to Thomas Rotch
No full textIn this undated letter, Nathanial Atkinson returns sheep numbering one hundred forty one or two animals loaned to him by Thomas Rotch. He requests that the bearer of the letter be reimbursed for expenses. Many persons who rented sheep from Rotch had little knowledge of the care and feeding of merinos and many animals were lost to predation by wolves and dogs. Rotch therefore recalled some of his sheep and successfully wintered over many animals with the addition of timothy and rye grass seeds to his pastures. 7.8" x 9.6" (19.8 by 24.5 cm
Mechanistic Investigations into the Palladium-Catalyzed Decarboxylative Allylic Alkylation of Ketone Enolates Using the PHOX Ligand Architecture
No full textPalladium-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
Planting the Union Flag in Texas: The Campaigns of Major General Nathaniel P. Banks in the West
No full textNathaniel Banks in Texas Over the years Gary Joiner and others have offered examinations of various parts of General Nathaniel P. Banks’s Western command in the latter years of the Civil War; comes now a full review of Banks’s activities by Stephen A. Dupree. The author\u27s efforts remin...
Juvenile poems on various subjects. With The prince of Parthia, a tragedy. / By the late Mr. Thomas Godfrey, Junr. of Philadelphia. ; To which is prefixed, some account of the author and his writings. ; [One line from Horace]
No full textxxvi, [2], 223, [1] p. ; 23 cm. (4to)"The Prince of Parthia is the earliest dramatic production by a native American author published in the American colonies."--Evans.The account of Godfrey is by Nathaniel Evans.Subscribers' names, p. xxiii-xxvi.Errata, p. [xxviii]."Elegy, to the memory of Mr Thomas Godfrey."--p. 1-4, signed: J. [i.e., John] Green. "Elegy to the memory of the same."--p. 5-7, signed: N. [i.e., Nathaniel] Evans
Uma senhora e um remador : presenças portuguesas na ficção de Nathaniel Hawthorne e Herman Melville
No full textIn this study the author analyses the relevance of the Portuguese presence in Nathaniel Hawthorne's "Drowne Wooden Image" and Herman Melville's "Benito Cereno", taking into account the historical, cultural, and literary context of their work
Quantifier rank spectrum of L-infinity-omega
No full textThesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2006.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Includes bibliographical references (p. 321) and index.In Part A we will study the quantifier rank spectrum of sentences of L!1,!. We will show that there are scattered sentences with models of arbitrarily high but bounded quantifier rank. We will also consider the case of weakly scattered and almost scattered sentences, and we will make some conjectures. In Part B we will look at a new method of induction in the case of sheaves. We will then use this method to generalize the classical proof of the Suslin-Kleene Separation Theorem to the context of sheaves on a partial Grothendieck topology.by Nathaniel Leedom Ackerman.Ph.D
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