276,000 research outputs found
Q&A Isobel Hook
No full textSue Bowler talks to Isobel Hook, professor of astrophysics at Lancaster University and an observational cosmologist who has contributed to 4MOST, Euclid and the Rubin Observatory. She is this year's Caroline Herschel Medalist
Nixon's “full-speech”: imaginary and symbolic registers of communication
No full textCommunicative interchanges play a foundational role in establishing the social. This being said, communicative behaviour can also lead to stalemates and conflict in which demands of recognition outweigh the prospect of hearing or saying anything beyond what is thought to be known. This paper foregrounds a dimension of communication often neglected by approaches prioritizing mass communications and new media technologies, namely the psychical and inter-subjective aspects of communicative exchange. More directly, this paper introduces and develops a Lacanian psychoanalytic theory of two interlinked registers of communicative behaviour. The first of these is the imaginary: the domain of one-to-one inter-subjectivity and behaviour that serves the ego and functions to consolidate the images subjects use to substantiate themselves. The second - far more disturbing and unpredictable - is the symbolic. It links the subject to a trans-subjective order of truth, it provides them with a set of socio-symbolic co-ordinates, and it ties them into a variety of roles and social contracts. In an elaboration of these two registers, illustrated by brief reference to Nixon’s admission of guilt in his interviews with David Frost, I pay particular attention to both the potentially transformative symbolic aspect of communicative behaviours and the ever-present prospect that such relations will ossify into imaginary impasses of mis-knowing (méconnaissance) and aggressive rivalry
Apical Sperm Hook Morphology Is Linked to Sperm Swimming Performance and Sperm Aggregation in <i>Peromyscus</i> Mice
No full textMammals exhibit a tremendous amount of variation in sperm morphology and despite the acknowledgement of sperm structural diversity across taxa, its functional significance remains poorly understood. Of particular interest is the sperm of rodents. While most Eutherian mammal spermatozoa are relatively simple cells with round or paddle-shaped heads, rodent sperm are often more complex and, in many species, display a striking apical hook. The function of the sperm hook remains largely unknown, but it has been hypothesized to have evolved as an adaptation to inter-male sperm competition and thus has been implicated in increased swimming efficiency or in the formation of collective sperm movements. Here we empirically test these hypotheses within a single lineage of Peromyscus rodents, in which closely related species naturally vary in their mating systems, sperm head shapes, and propensity to form sperm aggregates of varying sizes. We performed sperm morphological analyses as well as in vitro analyses of sperm aggregation and motility to examine whether the sperm hook (i) morphologically varies across these species and (ii) associates with sperm competition, aggregation, or motility. We demonstrate inter-specific variation in the sperm hook and then show that hook width negatively associates with sperm aggregation and sperm swimming speed, signifying that larger hooks may be a hindrance to sperm movement within this group of mice. Finally, we confirmed that the sperm hook hinders motility within a subset of Peromyscus leucopus mice that spontaneously produced sperm with no or highly abnormal hooks. Taken together, our findings suggest that any adaptive value of the sperm hook is likely associated with a function other than inter-male sperm competition, such as interaction with ova or cumulous cells during fertilization, or migration through the complex female reproductive tract
Groundwater characteristics at Seabee Hook, Cape Hallett, Antarctica
No full textSeabee Hook is a low lying gravel spit adjacent to Cape Hallett, northern Victoria Land, in the Ross Sea region of Antarctica and hosts an Adélie penguin (Pygoscelis adeliae) rookery. Dipwells were inserted to monitor changes in depth to, and volume of, groundwater and tracer tests were conducted to estimate aquifer hydraulic conductivity and groundwater velocity. During summer (November–February), meltwater forms a shallow, unconfined, aquifer perched on impermeable ice cemented soil. Groundwater extent and volume depends on the amount of snowfall as meltwater is primarily sourced from melting snow drifts. Groundwater velocity through the permeable gravel and sand was up to 7.8 m day−1, and hydraulic conductivities of 4.7 × 10−4 m s−1 to 3.7 × 10−5 m s−1 were measured. The presence of the penguin rookery, and the proximity of the sea, affects groundwater chemistry with elevated concentrations of salts (1205 mg L−1 sodium, 332 mg L−1 potassium) and nutrients (193 mg L−1 nitrate, 833 mg L−1 ammonia, 10 mg L−1 total phosphorus) compared with groundwater sourced away from the rookery, and with other terrestrial waters in Antarctica
Taksonomi lumut Gymnostomiella Vernicosa (Hook.) Fleisch. Ditinjau Darijumlah Kromosomnya
No full textINTISARI
Sujadmiko, H. dan Sutikno. 1990. Taksonomi lumut Gymnostomiella vernicosa (Hook.) Fleisch. ditinjau dari jumlah kromosom. Biologi, 2(7):355-363.
Gymnostomiella vernicosa (Hook.) Fleisch. merupakan lumut dauh yang hingga saat ini status penempatannya dalam klasifikasi masih diperdebatkan apakah sama atau berbeda dengan Gymnostomiella longinervis Broth. Penelitian ini bertujuan mempelajari jumlah kromosom Gymnostomiella vernicosa (Hook.) Fleisch., sebagai langkah awal studi sitotaksonominya. Jaringan tunas tumbuhan lumut (gametofit), yang ditanam di laboratorium digunakan sebagai bahan penelitian. Pembuatan preparat kromosom dilakukan dengan metode squash, sampel diambil antara pukul 06.00 sampai pukul 18.00. Penghitungan jumlah kromosom dilakukan terhadap kromosom pada sel-sel jaringan meristematik gametofit lumut, sedang untuk mengetahui status kedudukan taksonomi Gymnostomiella vernicosa (Hook.) Fleisch. dengan membandingkan hasil penelitian jumlah kromosom Gymnostomiella longinervis Broth.
Pengamatan sel-sel jaringan meristimatik Gymnostomiella vernicosa (Hook.) Fleisch. menunjukkan bahwa pembelahan mitosis terjadi sekitar pukul 07.00 pagi. Kromosom jenis lumut Gymnostomiella vernicosa (Hook.) Fleisch. berjumlah 12 (n = 12). Jenis lumut Gymnostomiella vernicosa (Hook.) Fleisch. merupakan jenis lumut yang berbeda dengan jenis lumut Gymnostomiella longinervis Broth, (n = 13), berdasarkan jumlah kromosomnya
Kata kunci: Kromosom, Gymnostomiella vernicosa (Hook.) Fleisch, lumut
hook n / hook and line
No full texthook nThe hook and line fishermen are meeting tonight to vote on a price agreement.PRINTED ITEM DNE SupGMS WKSep 87 [add to hook and line attrib as latest cite]Used I and SupUsed I and Supused Su
Commander in Chief approves the acquittal of Capt. Alexander Hill, as reported following a court martial
No full textSigned by I. Van Hook, Adjutant General of Ohi
boat-hook staff s
No full textboat-hook nAt noon I went round the traps, and searched the woods by the south side of Hare Hill, where I found some good longers and boat-hook staffs.PRINTED ITEM W.J. KIRWIN DEC 1972JH DEC 1972Not usedNot usedWithdrawnWithdrawn but no stam
The powers of emptiness
No full textFoucault is often considered to be the commensurate theorist of power. His late work provides an impressive array of concepts that enables a multi-dimensional analysis of the historical, material, and discursive facets of power. What is missing from this approach, however, is the factor of passionate attachments, or what we might term the sublime motivations that underlie any regime of control. Lacan’s ethical thought prioritizes precisely the issue of the sublime, and, more to the point, the process of sublimation which establishes an effective “short-circuit” between socially valorized objects and direct drive satisfactions of individuals. Key here is the notion of das Ding, the place of the absent object of primordial satisfaction that generates libidinal enjoyment and draws the subject toward the pinnacle of social valorization. Lacan thus shows us what Foucault cannot theorize. That is to say, if sublimation consists of a relation to the real of das Ding, then it cannot be limited in the terms of its activation to the powers of discursive domain alone; it remains a self-initiating and self-regulating form of power
Graduate recital, baritone. Hook, D. L., 1998
No full textRecorded during a live performance at Dalton Center Recital Hall, Western Michigan University, Kalamazoo, Michigan, August 21, 1998, 7:00 p.m., the 616th concert of the School of Music's 1997-1998 season.David Lee Hook, baritone ; David Close, piano with Natalie Priest, soprano (2nd-3rd works) ; Justin Park, baritone (8th-9th works).In partial fulfillment of the requirements of the Master of Music degree in vocal pedagogy, Western Michigan University, 1998.Information from performance program.Die schöne Müllerin, D. 795. Das Wandern ; Wohin? ; Halt! ; Danksagung an den Bach ; Am Feierabend / Franz Schubert ; texts by Wilhelm Müller -- The man who feels sweet love's emotion from The magic flute / Wolfgang Amadeus Mozart -- O del mio dolce ardor from Paride ed Elena / Christoph Willibald Gluck -- L'attente (text by Victor Hugo) ; Danse macabre (text by Henri Cazalis (Jean Lahor)) / Camille Saint-Saëns -- Tre ariette. Il fervido desiderio ; Dolente immagine di Fille mia ; Vaga luna che inargenti / Vincenzo Bellini -- I can see it from The fantasticks / Harvey Schmidt -- My defenses are down from Annie get your gun / Irving Berlin -- Earth and air and rain, op. 15. Summer schemes ; Waiting both ; Rollicum-rorum / Gerald Finzi ; texts by Thomas Hardy
- …
