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  • 1
    Unknown
    Ann Arbor, Michigan : Open Humanities Press
    Keywords: climate change
    Description / Table of Contents: This book argues that climate change has a devastating effect on how we think about the future. Once several positive feedback loops in Earth’s dynamic systems, such as the melting of the Arctic icecap or the drying of the Amazon, cross the point of no return, the biosphere is likely to undergo severe and irreversible warming. Nearly everything we do is premised on the assumption that the world we know will endure into the future and provide a sustaining context for our activities. But today the future of a viable biosphere, and thus the purpose of our present activities, is put into question. A disappearing future leads to a broken present, a strange incoherence in the feel of everyday life. We thus face the unprecedented challenge of salvaging a basis for our lives today. That basis, this book argues, may be found in our capacity to assume an infinite responsibility for ecological disaster and, like the biblical Job, to respond with awe to the alien voice that speaks from the whirlwind. By owning disaster and accepting our small place within the inhuman forces of the biosphere, we may discover how to live with responsibility and serenity whatever may come.
    ISBN: 9781607853145
    Language: English
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  • 2
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    Unknown
    Open Humanities Press
    Publication Date: 2024-04-02
    Description: Humanity now faces the possibility that it will become extinct over the next few decades or so. This is not simply a reality about the biological fate of the species; it also raises the prospect of thought’s own extinction. But what does it mean for thought that it, too, might disappear? Thought’s possible disappearance shatters the assumption, at work across all the institutions and disciplines of the West, that one version or another of thought is enduring and will survive. As it turns out, no familiar practice rests on a secure ground; under the sign of the terminus - the prospect of humanity’s extinction - each one is shattered and undone. The cultural legacy becomes a field of rubble. In dozens of short essays, this book moves through this field. It takes up a host of specific inheritances and traces how each is shattered and transformed by an extinct thought. It engages with religion, philosophy, history, literature, ethics, studies of political power and resistance, and depictions of humanity’s place in the nonhuman world. It reconsiders the emergence of capitalism and of biopower, the science of climate change, the import of mediation and technology, and philosophies of temporality. Moreover, it contends with many innovative waves of thought over the past two centuries, from German idealism to deconstruction, from psychoanalysis to queer theory, from decolonizing theory to Afropessimism, and from the critique of ideology to speculative realism. It concludes by assessing what it is like for thought, having confronted its extinction, to live on in this debris, to dance with its own oblivion.
    Keywords: humanity; extinction ; thema EDItEUR::N History and Archaeology::NH History ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBF Social and ethical issues::JBFZ Social forecasting, future studies
    Language: English
    Format: image/jpeg
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  • 3
    ISSN: 1432-2048
    Keywords: Key words: Actin ; Cell elongation ; Gravitropism ; Microtubule ; Pulvinus ; Zea (gravitropism)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Characterization of gravitropic bending in the maize stem pulvinus, a tissue that functions specifically in gravity responses, demonstrates that the pulvinus is an ideal system for studying gravitropism. Gravistimulation during the second of three developmental phases of the pulvinus induces a gradient of cell elongation across the non-growing cells of the pulvinus, with the most elongation occurring on the lower side. This cell elongation is spatially and temporally separated from normal internodal cell elongation. The three characterized growth phases in the pulvinus correspond closely to a specialized developmental sequence in which structural features typical of cells not fully matured are retained while cell maturation occurs in surrounding internodal and nodal tissue. For example, the lignification of supporting tissue and rearrangement of transverse microtubules to oblique that occur in the internode when cell elongation ceases are delayed for up to 10 d in the adjacent cells of the pulvinus, and only occurs as a pulvinus loses its capacity to respond to gravistimulation. Gravistimulation does not modify this developmental sequence. Neither wall lignification nor rearrangement of transverse microtubules occurs in the rapidly elongating lower side or non-responsive upper side of the pulvinus until the pulvinus loses the capacity to bend further. Gravistimulation does, however, lead to the formation of putative pit fields within the expanding cells of the pulvinus.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1615-6102
    Keywords: Filamentous actin ; Cytoskeleton ; Microtubules ; Phragmoplast ; Phragmosome ; Solanum tuberosum ; Suspension culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Microtubule and filamentous(F)-actin organization in the potato suspension culture line HH260 was studied by fluorescence microscopy in double-labelled cells. During interphase, microtubules and F-actin were randomly arrayed in isodiametric cells but were aligned transversely to the direction of growth in elongated cells. Microtubules and F-actin coaligned in preprophase bands which were, however, comparatively rare and diffuse. Interestingly, more than half of the cells in telophase contained phragmoplasts that were either horseshoe-shaped or straight, instead of being round. We traced the cause of this difference to preprophase, where misplaced nuclear localization away from the central axis of cells may give rise to acentrally placed spindles and, subsequently, to acentrally placed phragmoplasts and cell plates. Further, we hypothesize that it is the uneven fusion of the expanding cell plates with the parent plasma membrane, and the accompanying depolymerization of those parts of the phragmoplasts, that gives the incomplete phragmoplasts observed.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1615-6102
    Keywords: Chara ; F-actin ; Immunofluorescence ; Microtubule ; Nitella ; Phalloidin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We report on the novel features of the actin cytoskeleton and its development in characean internodal cells. Images obtained by confocal laser scanning microscopy after microinjection of living cells with fluorescent derivatives of F-actin-specific phallotoxins, and by modified immunofluorescence methods using fixed cells, were mutually confirmatory at all stages of internodal cell growth. The microinjection method allowed capture of 3-dimensional images of high quality even though photobleaching and apparent loss of the probes through degradation and uptake into the vacuole made it difficult to record phallotoxin-labelled actin over long periods of time. When injected at appropriate concentrations, phallotoxins affected neither the rate of cytoplasmic streaming nor the long-term viability of cells. Recently formed internodal cells have relatively disorganized actin bundles that become oriented in the subcortical cytoplasm approximately parallel to the newly established long axis and traverse the cell through transvacuolar strands. In older cells with central vacuoles not traversed by cytoplasmic strands, subcortical bundles are organized in parallel groups that associate closely with stationary chloroplasts, now in files. The parallel arrangement and continuity of actin bundles is maintained where they pass round nodal regions of the cell, even in the absence of chloroplast files. This study reports on two novel structural features of the characean internodal actin cytoskeleton: a distinct array of actin strands near the plasma membrane that is oriented transversely during cell growth and rings of actin around the chloroplasts bordering the neutral line, the zone that separates opposing flows of endoplasm.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1615-6102
    Keywords: Actin ; Cytoplasmic streaming ; Cytochalasin ; Microtubule depolymerization ; Nitella ; Oryzalin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In the characean algaNitella, depolymerization of microtubules potentiates the inhibitory effects of cytochalasins on cytoplasmic streaming. Microtubule depolymerization lowers the cytochalasin B and D concentrations required to inhibit streaming, accelerates inhibition and delays streaming recovery. Because microtubule depolymerization does not significantly alter3H-cytochalasin B uptake and release, elevated intracellular cytochalasin concentrations are not the basis for potentiation. Instead, microtubule depolymerization causes actin to become more sensitive to cytochalasin. This increased sensitivity of actin is unlikely to be due to direct stabilization of actin by microtubules, however, because very few microtubules colocalize with the subcortical actin bundles that generate streaming. Furthermore, microtubule reassembly, but not recovery of former transverse alignment, is sufficient for restoring the normal cellular responses to cytochalasin D. We hypothesize that either tubulin or microtubule-associated proteins, released when microtubules depolymerize, interact with the actin cytoskeleton and sensitize it to cytochalasin.
    Type of Medium: Electronic Resource
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  • 7
    Publication Date: 2013-04-09
    Print ISSN: 1286-4560
    Electronic ISSN: 1297-966X
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Springer
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  • 8
    Publication Date: 1998-11-20
    Print ISSN: 0032-0935
    Electronic ISSN: 1432-2048
    Topics: Biology
    Published by Springer
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  • 9
    Publication Date: 2003-12-01
    Print ISSN: 0032-0935
    Electronic ISSN: 1432-2048
    Topics: Biology
    Published by Springer
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  • 10
    Publication Date: 2003-12-01
    Print ISSN: 0032-0935
    Electronic ISSN: 1432-2048
    Topics: Biology
    Published by Springer
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