170,300 research outputs found
Callow, J C (James Clayton), NX52429
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/375488Surname: CALLOW
Given Name(s) or Initials: J C (JAMES CLAYTON)
Military Service Number or Last Known Location: NX52429
Missing, Wounded and Prisoner of War Enquiry Card Index Number: 20427188189
Item: [2016.0049.07796] "Callow, J C (James Clayton), NX52429
Adam Roberts: Critical Essays
No full textEach chapter in this collection explores the challenge posed to science fiction, literary fiction and contemporary ideas through Roberts’s novels. His use of the science fiction toolkit combined with his sharp and sometimes lyrical prose blurs the distinction that some would wish to maintain between science fiction and mainstream literature
Landscape, Tradition and Power in Medieval Iceland:Dalir and the Eyjafjörður region c.870-c.1265
No full textLandscape, Tradition and Power critically examines the evidence for socio-political developments in medieval Iceland during the so-called Commonwealth period. The book compares regions in the west and north-east of Iceland because these regions had differing human and physical geographies, and contrasting levels of surviving written evidence. Callow sets out the likely economies and institutional frameworks in which political action took place. He then examines different forms of evidence – the Contemporary sagas, Landnámabók (The Book of Settlements), and Sagas of Icelanders – considering how each describes different periods of the Commonwealth present political power. Among its conclusions the book emphasises stasis over change and the need to appreciate the nuances and purposes of Iceland’s historicising sagas
Etherotopia or a country in the mind: bridging the gap between utopias and nirvanas
No full textJoyce Hertzler concludes his History of Utopian Thought with the phrase ‘Utopia is not a social state it is a state of mind’. Other utopian scholars would argue that the truth is exactly the opposite, that utopia is a purely social matter. There seems to be a false dilemma here where one must choose between two, seemingly conflicting, schools of utopian thinking: social utopias and private ones. In John Carey’s words, ‘Whereas most utopias reform the world, some reform the self’. He says of the later that these ‘solitary utopians are Robinson Crusoes of the mind, inventing islands for themselves to inhabit’ and that they are very unlike ‘normal, public-spirited utopians’. In this essay Christos Callow Jr explores the potential of a utopia that reforms both world and self and proposes Etherotopia as its name
Nanostructured Films of Amphiphilic Fluorinated Block Copolymers for Fouling Release Application
No full textNew amphiphilic block copolymers SnSzm consisting of blocks with varied degrees of polymerization, n and m,
of polystyrene, S, and polystyrene carrying an amphiphilic polyoxyethylene-polytetrafluoroethylene chain side-group,
Sz, were prepared by controlled atom transfer radical polymerization (ATRP). The block copolymers, either alone
or in a blend with commercial SEBS (10 wt% SEBS), were spin-coated in thinner films (200-400 nm) on glass and
spray-coated in thicker films (about 500 nm) on a SEBS underlayer (150-200 μm). Angle-resolved X-ray photoelectron
spectroscopy (XPS) measurements proved that at any photoemission angle, φ, the atomic ratio F/C was larger than
that expected from the known stoichiometry. Consistent with the enrichment of the outer film surface (3-10 nm) in
F content, the measured contact angles, θ, with water (θw = 107°) and n-hexadecane (θh = 64°) pointed to the
simultaneous hydrophobic and lipophobic character of the films. The film surface tension γS calculated from the θ
values was in the range 13-15 mN/m. However, the XPS measurements on the “wet” films after immersion in water
demonstrated that the film surface underwent reconstruction owing to its amphiphilic nature, thereby giving rise to
a more chemically heterogeneous structure. The atomic force microscopy (AFM) images (tapping mode/AC mode)
revealed well-defined morphological features of the nanostructured films. Depending on the chemical composition
of the block copolymers, spherical (ca. 20 nm diameter) and lying cylindrical (24-29 nm periodicity) nanodomains
of the S discrete phase were segregated from the Sz continuous matrix (root-mean-square, rms, roughness ≈ 1 nm).
After immersion in water, the underwater AFM patterns evidenced a transformation to a mixed surface structure, in
which the nanoscale heterogeneity and topography (rms ) 1-6 nm) were increased. The coatings were subjected to
laboratory bioassays to explore their intrinsic ability to resist the settlement and reduce the adhesion strength of two
marine algae, viz., the macroalga (seaweed) UlVa linza and the unicellular diatom NaVicula perminuta. The amphiphilic
nature of the copolymer coatings resulted in distinctly different performances against these two organisms. UlVa
adhered less strongly to the coatings richer in the amphiphilic polystyrene component, percentage removal being
maximal at intermediate weight contents. In contrast, NaVicula cells adhered less strongly to coatings with a lower
weight percentage of the amphiphilic side chains. The results are discussed in terms of the changes in surface structure
caused by immersion and the effects such changes may have on the adhesion of the test organisms
La posizione del verbo in vedico
No full textIl saggio si occupa della descrizione sintattica della posizione del verbo vedico nel quadro della teoria Split-CP. Delbrück (1878) aveva già individuato la struttura di base SOV e l’esistenza di costruzioni marcate. Qui si cerca di precisare ulteriormente quali sono i contesti che provocano il movimento del verbo verso la periferia sinistra della frase: focalizzazioni contrastive e non contrastive, dello stesso verbo o di argomenti da questo dipendenti. L’area occupata dai costituenti marcati corrisponde alla proiezione CP che il Cartographic Program ha analizzato in più proiezioni funzionalmente differenziate
Ontogeny of colonial hydrocarbon label in callow workers of the ant Cataglyphis iberica
No full textIn ants, postpharyngeal glands are the reservoir for the colonial odour which mediates the interindividual recognition. Quantitative and qualitative changes in colonial hydrocarbon profile of these glands were studied in the ant Cataglyphis iberica from emergence of workers. Isolation of callow seems to affect the maturation process. The glandular secretion of the callow workers increases in amount and becomes similar to that of mature workers around 10 d old. However, the rate of hydrocarbon accumulation in the glands of callow workers that were reared in isolation remains lower compared to mature nestmates. Early social isolation also affects the acquisition of the specific colony profile which remains very different from that of their mother colony. These results suggest a transfer of hydrocarbons from matures to callows. This transfer allows the new members of the colony to integrate the colonial odour during the few days following emergence.We are very grateful to ( Vienne for the English translation of the French draft of the manuscript and to A. Uejean for the
English revision. We wish to thank A. Hefetz, C. Errard and R.K. Vander Meer for their valuable and constructive comments on the manuscript.Peer Reviewe
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
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