417 research outputs found

    Chloroform anaesthesia

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    As far back as 1796 a group of Dutch chemists produced a dense oily liquid. This was probably ethylene dichloride (CH2C1)2 and it was known as Dutch liquid or chloric ether, remaining for many years a chemical curiosity. Professor Benjamin Silliman, in his Yale College Elements of Chemistry, dated February, 1831, gave a description of the physical properties of chloric ether, and ended the paragraph by stating: Its medical powers have not been ascertained but from its constitution and properties, it is highly probable that it would be active diffusive stimulant (83a)

    Counternarratives from Women of Color Academics: Bravery, Vulnerablility and Resistance

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    This book documents the lived experiences of women of color academics who have leveraged their professional positions to challenge the status quo in their scholarship, teaching, service, activism, and leadership. By presenting reflexive work from various vantage points within and outside of the academy, contributors document the cultivation of mentoring relationships, the use of administrative roles to challenge institutional leadership, and more. Through an emphasis on the various ways in which women of color have succeeded in the academy—albeit with setbacks along the way—this volume aims to change the discourse surrounding women of color academics: from a focus on trauma and mere survival to a focus on courage and thriving.https://scholarship.richmond.edu/bookshelf/1311/thumbnail.jp

    Myth and personal experience in Roman love-elegy, with consideration of the Hellenistic background

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    This thesis examines the manner in which the Roman love-elegists used myth to illustrate personal experience. It is shown that the elegists were probably indebted to the poets of the Hellenistic period for the various techniques they used to link myth (usually in the form of exempla) to its context. Chapter 1 looks at some illustrative and paradeigmatic uses of myth by the Hellenistic catalogue-elegists; by Callimachus, Apollonius Rhodius and Theocritus; and by the epigrammatists. It is shown that the major Hellenistic poets developed techniques by means of which the exemplum could be made an integral part even of a short poem or episode. It was Tibullus and Propertius on whom these ways of handling myth' had the most effect; Ovid was influenced more by the epigrammatists. Chapter 2 examines briefly Catullus' handling of myth in his elegy LXVIII and Callus' possible use of myth. Chapter 3 deals in some detail with Tibullus' use of myth in 1, 3 (the Golden Age; Elysium; Tartarus); 1, 10 (the mythic past; Hades) and 11,3 (Apollo and Admetus; the mythic past). The very close connexion between these myths and the poet's personal experience is demonstrated. Chapter 4 handles Propertius' use of myth to illustrate in various ways his own and his mistress' experience. The material here is treated in three sections: (i) Allusive Exempla - where the poet presupposes knowledge on the reader's part of the mythological events concerned. (ii) Shaped Exempla - i.e. exempla which the poet shapes in different ways for his own purposes, including in them all the details necessary for the reader's understanding. (iii) Mixed Exempla - which combine the characteristics of both the above categories. Chapter 5 deals with Ovid's use of myth in his Amores to illustrate what is presented as personal experience. His mythological illustrations are discussed in four categories: (i) Illustrative Exempla - i.e. exempla used in a rhetorical way simply to prove a given point or statement. (ii) Witty Exempla - used chiefly to create humorous and amusing effects. (iii) Mixed Exempla - combining the functions of both the first two categories. (iv) 'Propertian' Exempla - i.e. exempla handled by Ovid very much in the manner of Propertius. The Conclusion briefly draws together evidence of the influence of the Hellenistic poets' treatment of myth on the Roman love-elegists. It also outlines what is distinctive and characteristic about each of the elegists' manner of handling myth

    Metabolic remodeling of the tumor microenvironment: migration stimulating factor (MSF) reprograms myofibroblasts toward lactate production, fueling anabolic tumor growth.

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    Migration stimulating factor (MSF) is a genetically truncated N-terminal isoform of fibronectin that is highly expressed during mammalian development in fetal fibroblasts, and during tumor formation in human cancer-associated myofibroblasts. However, its potential functional role in regulating tumor metabolism remains unexplored. Here, we generated an immortalized fibroblast cell line that recombinantly overexpresses MSF and studied their properties relative to vector-alone control fibroblasts. Our results indicate that overexpression of MSF is sufficient to confer myofibroblastic differentiation, likely via increased TGF-b signaling. In addition, MSF activates the inflammation-associated transcription factor NFκB, resulting in the onset of autophagy/mitophagy, thereby driving glycolytic metabolism (L-lactate production) in the tumor microenvironment. Consistent with the idea that glycolytic fibroblasts fuel tumor growth (via L-lactate, a high-energy mitochondrial fuel), MSF fibroblasts significantly increased tumor growth, by up to 4-fold. Mechanistic dissection of the MSF signaling pathway indicated that Cdc42 lies downstream of MSF and fibroblast activation. In accordance with this notion, Cdc42 overexpression in immortalized fibroblasts was sufficient to drive myofibroblast differentiation, to provoke a shift towards glycolytic metabolism and to promote tumor growth by up to 2-fold. In conclusion, the MSF/Cdc42/NFκB signaling cascade may be a critical druggable target in preventing Warburg-like cancer metabolism in tumor-associated fibroblasts. Thus, MSF functions in the metabolic remodeling of the tumor microenvironment by metabolically reprogramming cancer-associated fibroblasts toward glycolytic metabolism

    A New Small-Bodied Species of Bavayia (Reptilia: Squamata: Diplodactylidae) from Southeastern New Caledonia.

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    v. ill. 23 cm.QuarterlyA new species of diplodactylid genus Bavayia, B. goroensis, is described from the Plaine des Lacs region of the Province Sud, New Caledonia. The new gecko is the smallest member of the Bavayia cyclura clade (49 mm snout-vent length) and, based on a molecular phylogeny, is basal within this group. It differs from other members of this group in its much smaller size, more gracile body, and lower number of precloacal pores and subdigital lamellae. The new species is known from only two locations, one of which is adjacent to extensive nickel mining operations. Because of its limited distribution and the direct and indirect threats posed by the proximity of mining to one of the populations, the species is here regarded as ‘‘Endangered.’
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