6,138 research outputs found
The Robert Coles papers : journeys of an MSU archive
No full textDr. David Cooper, Michigan State University Professor of Writing, Rhetoric, and American Cultures speaks at an event titled, The Robert Coles papers: Journeys of an MSU archive, held in the MSU Main Library. Cooper discusses the career of renowned child psychiatrist Dr. Robert Coles and his collected papers which are now part of MSU Libraries' Special Collections. Cooper comments on the significance of the Coles archive at MSU and Coles' life and contributions to the fields of psychiatry and education. Cooper and Peter Berg, Assistant Director for MSU Libraries Special Collections also talk about the adventure of bringing the collection to MSU, its physical condition, preservation concerns and the process of cataloging the materials. Both also discuss how the Robert Coles collection is currently being used by scholars for social and literary research. David Gift, Vice Provost for Libraries Computing and Technology introduces the event. Part of the MSU Libraries' Colloquia Series
Indução e controle da embriogenese somatica in vitro na goiabeira serrana (feijoa sellowiana Berg)
No full textDissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias BiologicasNo presente trabalho estudaram-se as condições para o estabelecimento, multiplicação e maturação de linhagens celulares embriogenéticas in vitro, a conversão dos ES e a produção de sementes sintéticas, a partir de embriões zigóticos (EZ) de Feijoa sellowiana Berg. Testaram-se também as formulações salinas LPm, MS e WPM, fontes e níveis de aminoácidos e pulsos de 2,4-D. Avaliações histoquímicas e histológicas foram feitas para caracterizar os processos morfogenéticos in vitro. A maior percentagem de indução e o maior número de ES ocorreram nos acessos 101 e 50-4. A formulação salina LPm, adicionada de 2,4-D e Gln, resultou em valores elevados de indução embriogenética. A adição de Asn, Gln ou Arg ao meio LPm resultou em valores elevados de indução e produção de ES. Pulsos de duas semanas com 2,4-D proporcionaram valores comparativos de indução e produção de ES, àqueles obtidos com pulsos de 4 e 8 semanas. Sementes em maturação fisiológica e armazenadas a 4° C por 12 meses, mantiveram alto potencial de indução e produção de ES. Linhagens celulares embriogenéticas foram estabelecidas, multiplicadas e mantidas com alto potencial embriogenético. A dinâmica de crescimento das suspensões celulares revelou um incremento de 21,7 vezes, após 50 dias em meio de cultura LPm contendo 2,4-D e 2iP e quando repicadas para o meio basal geleificado foram induzidas à maturação. A conversão de ES em plântulas foram obtidas em meio basal LPm contendo BAP e/ou GA3. A conversão das sementes sintéticas em plantulas ocorreu em tratamentos contendo KNO3. Estudos histoquímicos e histológicos demonstraram a evolução dos processos morfogênicos in vitro
Figure 2 in Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella
No full textFigure 2. Recorded distribution of 'synurellids' in North America. Symbols with outlines denote type localities for the respective taxa.Published as part of Cannizzaro, Andrew G., Daniels, James D. & Berg, David J., 2022, Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella, pp. 1100-1115 in Zoological Journal of the Linnean Society 195 on page 1105, DOI: 10.1093/zoolinnean/zlab092, http://zenodo.org/record/699374
Panorama oder Zirkel-Aussicht vom Rigi Berg
No full textBeschreibung Wegweiser nach der Rigikulm, als Text zum Panorama oder der Zirkel-Aussicht gezeichnet von Oberst Ludw. Pfyffer v. Wyherauf dem Kulm gezeichnet von Ludwig Pfyffer von Wyher ; radirt v. Gebr. Fr. [Schmid] und [David] Al. SchmidHorizontalpanoramaHandkolorierte Umrissradierung: Berge laviert, Gewässer, Ortschaften und Strassen handkoloriertGegenüber Erstausgabe 1818 neue Platte, sowie neue und erweiterte Nomenklatur, mit verändertem Kulm-Wirtshaus, Stallung und Holzgerüst Belvedere auf Rigi-Kulm (errichtet 1820)In den Ecken 4 Vignetten (gegenüber Erstausgabe 1818 neue Darstellungen): "Aussicht von der Staffel nach dem Kulm" / F[ranz] Schmid del., F[ranz] Hegi sc.; "Rigi-Kulm Haus" / D[avid] A[lois] Schmid del., F. Hegi sc.; "Rigi-Berg von der nordwest Seite gezeichnet" / D.A. Schmid del., F. Hegi sc.; "Karte des vier Waldstädter See's" / [Johann Jakob Scheurmann]In Schube
Panorama oder Zirkel-Aussicht vom Rigi Berg
No full textBeiheft Guide des voyageurs sur le Mont Righi, depuis sa base jusqu'à la sommité la plus élevée dite le Kulm, pour servir d'explication au panorama ou vue circulaire dessinée par le colonel Louis Pfyffer de Wyher.auf dem Kulm gezeichnet von Ludwig Pfyffer von Wyher ; radirt v. Gebr. Fr. [Schmid] und [David] Al. SchmidHorizontalpanorama (Zirkelbild)Handkolorierte Umrissradierung: Berge laviert, Gewässer, Ortschaften und Strassen handkoloriertGegenüber Ausgabe 1820 verändert (Gebäudeschatten)In den Ecken 4 Vignetten (ohne Kolorit): "Aussicht von der Staffel nach dem Kulm" / F[ranz] Schmid del., F[ranz] Hegi sc.; "Rigi-Kulm Haus" / D[avid] A[lois] Schmid del., F. Hegi sc.; "Rigi-Berg von der nordwest Seite gezeichnet" / D.A. Schmid del., F. Hegi sc.; "Karte des vier Waldstädter See's" / [Johann Jakob Scheurmann]Impressum auf Beiheft: Luzern : [s.n.], 1829Panorama und Begleitheft separat, in Schube
Lateral mobility of presynaptic α7-containing nicotinic receptors and its relevance for glutamate release
No full textSurface diffusion of postsynaptic receptors shapes synaptic transmission. Presynaptic receptors also influence transmission, but the relevance of their mobility for synaptic function is unknown. Using single-particle tracking with quantum dots, we show that calcium-permeable α7-containing nicotinic acetylcholine receptors (α7-nAChRs), capable of promoting transmitter release, are mobile on presynaptic terminals but constrained in synaptic space on rat hippocampal neurons in culture. Additional immobilization of presynaptic α7-nAChRs by antibody crosslinking increases glutamate release capacity as seen in the frequency of spontaneous miniature postsynaptic currents and the size of the readily releasable pool of transmitter. Conversely, blocking glutamate release by targeting tetanus toxin to individual synapses increases α7-nAChR dwell time at presynaptic sites. The effects on release require functional α7-nAChRs and may to depend on CAST/ELKS (calpastatin/glutamine, leucine, lysine, and serine-rich protein), which an unbiased proteomic screen yielded. The results support a new homeostatic regulatory mechanism in which α7-nAChR restrain may be adjusted as needed at presynaptic sites via active zone proteins to maintain transmitter release capability
Sicifera Cannizzaro & Daniels & Berg 2022, GEN. NOV.
No full textSICIFERA GEN. NOV. Z o o b a n k r e g i s t r a t i o n: u r n: l s i d: z o o b a n k. org:act: 9E1F37D8-3DF2-458A-B7E7-3A3B43B43738 Type species: Sicifera cahawba sp. nov. Included species (four): Sicifera bifurca (Hay, 1882) comb. nov., Sicifera cahawba sp. nov., Sicifera chamberlaini (Ellis, 1941) comb. nov. and Sicifera dentata (Hubricht, 1943) comb. nov. Diagnosis Medium-sized epigean species, with full eyes and integumentary pigment; interantennal lobe narrow, with rounded upper and lower margins; antenna 1 longer than antenna 2, aesthetascs present on flagellar segments, accessory flagellum two-segmented; antenna 2 of males bearing calceoli on peduncle and flagellum; mandibular molar, incisor and lacinia mobilis well developed, palp three-segmented; maxilla 1 outer plate with seven apical comb-spines; maxilla 2 inner plate with more than five plumose facial setae; propodus of second gnathopod larger than or subequal to first, rastellate setae present or absent on posterior margins of carpus and propodus, propodi anterodistal corners bearing spine-like projections that reduce in size until maturity, palmar margins straight or weakly oblique, armed with multiple robust, bifid setae; coxal plates 1–4 deeper than corresponding somites, longer than broad; pereopod 6 longer than pereopod 7 and much longer than pereopod 5; pereopod dactyli bearing two to five inner marginal setae; subovate coxal gills present on somites 2–6, lanceolate sternal gills present on somites 6 and 7, single pereopod 7 gill present on somite 7; epimera with distinct posterodistal corners, posterior margins with few setae; uronites free or coalesced; uropods 1 and 2 weakly sexually dimorphic; uropod 3 uniramous, ramus one-segmented, shorter than peduncle, with apical robust setae, peduncle often with robust setae; telson of males> 50% cleft-to-base, apices with numerous robust setae, lateral margins bearing plumose setae. Remarks Closely allied morphologically with the ‘synurellid’ genera (Synurella, Eosynurella, Diasynurella, Volgonyx and Pontonyx), but can be distinguished from these by using the combination of the following characteristics: the presence of spine-like projections on the anterodistal corner of the gnathopod propodi; presence of two to five inner marginal setae on pereopod dactyli; and male telson> 50% cleft-to-base. Differs from the molecularly allied Amurocrangonyx and the sympatric Crangonyx in the presence of a reduced, uniramous uropod 3; presence of spinelike projections on the anterodistal corners of the gnathopod propodi; and the presence of multiple inner marginal setae on the pereopod dactyli. Differs from other Nearctic genera (Stygobromus, Stygonyx Bousfield & Holsinger, 1989 and Bactrurus Hay, 1902) in possessing pigmented eyes, a uniramous uropod 3 and the presence of spine-like projections on the anterodistal corner of the gnathopod propodi. Etymology The genus name Sicifera is formed from the Latin sica (dagger) and ferre (to bear/carry), in reference to the A NEW CRANGONYCTID AMPHIPOD 1105 characteristic spine-like projections originating from the anterodistal corner of the gnathopod propodi.Published as part of Cannizzaro, Andrew G., Daniels, James D. & Berg, David J., 2022, Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella, pp. 1100-1115 in Zoological Journal of the Linnean Society 195 on pages 1103-1105, DOI: 10.1093/zoolinnean/zlab092, http://zenodo.org/record/699374
Kurtz abgefastes sehr nütz- und erbauliches Berg- und Saltzwercks-Buch, in welchem alles, was in ... Mathesii, Eichholtzens und Suchlandes ... Berg-Predigten und Schrifften ... enthalten ... beschrieben ist, nebst noch etlichen andern Tractätlein von dem edlen Saltzwercke : item einer neuen Invention aus Koch-Salz Salpeter zu machen ...
No full textdurch D. David KellnernFrontispiz (Kupferst.)Titel in Rot- und SchwarzdruckSeitenzählung springt von S. 496 auf S. 49
Rigi-Berg von der nordwest Seite gezeichnet
No full textD. A. Schmid del. ; F. Hegi sc.Eckvignette zu Panorama oder Zirkel-Ansicht vom Rigi-Berg auf dem Kulm, Luzern: Meyer, 1830Aus der Sammlung von Heinrich Appenzeller (1854-1921) Exemplar der Zentralbibliothek Zürich, Graphische Sammlung und Fotoarchi
Composing the self: gender, subjectivity and Scottish balladry
No full textThe focusing of post-structuralism on broader social discourses has led to the sidelining of the 'author' within cultural history. This article explores authorship and subjectivity in the composition of Scottish balladry a genre transmitted over generations and collectively composed. It argues that even within texts as seemingly socially created as ballads the voice of individual singers can be heard, highlighting their concerns and subjectivities. This article focuses on songs collected from Scottish balladists by the early nineteenth-century collector William Motherwell and discusses how gender identity was explored in ballads by singers
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