170,181 research outputs found
Generalized Minimizing Movements for the varifold Canham-Helfrich flow
No full textThe gradient flow of the Canham-Helfrich functional is tackled via the
Generalized Minimizing Movements approach. We prove the existence of solutions
in Wasserstein spaces of varifolds, as well as upper and lower diameter bounds.
In the more regular setting of multiply covered surfaces, we provide
a Li-Yau-type estimate for the Canham-Helfrich energy and prove the
conservation of multiplicity along the evolution
Memorandum, Roland Clement to Robert Canham, Pelicans at Washburn and Alafia Sanctuaries, July 14, 1970
No full textA memo from Roland Clement to Robert Canham authorizing Ralph Schreiber to band pelicans at Washburn and Alafia Sanctuaries.https://digitalcommons.usf.edu/audubon_coastal_islands_records/1002/thumbnail.jp
Optical Properties of Low Dimensional Silicon Nanostructures
No full textNATO ASI Series E: Applied Science This book describes the state of the art on the luminescent properties of porous silicon. The dramatic results of the major international laboratories and groups working in this subject are presented. The majority of the participants agree that a quantum confinement effect and a good passivation of the surface crystallites are responsible for the observed luminescence properties. New characterisation techniques are for the first time presented as a comprehensive survey of the theoretical models. Both efficient and wavelength tunable electroluminescence are demonstrated using liquid contacts and a cathodic injection system. Localised cathodoluminescence in a scanning electron miscroscope and a scanning tunneling microscope is also presented. This book demonstrates that a consensus is emerging on the origin of the visible luminescence of highly porous Si. This novel nanostructure is extending our knowledge into a new area of solid state physics
Porous silicon templates for superconducting devices
No full textThe use of porous silicon (PS) templates in the field of superconducting nanoelectronics is reviewed.We focus on the influence of the morphology of the pores (porosity, average pore diameter) on the superconducting properties of ultrathin films deposited on these templates. We describe and discuss some basic and advanced properties of the obtained nanostructured superconductors. In particular, we show that, due to the extremely reduced dimensions of PS templates, the formation of commensurate vortex structures can be realized at low temperatures and at matching fields as high as μ0H1≈ 1 T. We also show that with this fabrication procedure, we can obtain networks of one-dimensional superconducting nanowires, which exhibit features typical of quantum phase slip (QPS) phenomena. This creates preconditions for the development and implementation of new highly sensitive radiation detectors, magnetometers, QPS qubits, QPS transistors, and quantum current standards
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The World Flow of News
No full textThe John Peter Zenger Award for Freedom of the Press and the People's Right to Know, 1970 / The World Flow of News, An Address by Erwin D. Canham, Editor-in-Chief, The Christian Science MonitorIncludes list of previous Zenger Award winners and foreword by Samuel C. McMillan, University of Arizona.This title from the Zenger Awards collection is made available by the University of Arizona School of Journalism and the University of Arizona Libraries. For more information about the Zenger Awards, visit http://journalism.arizona.edu/zenger
Predicting the occurrence of riparian woody species to inform environmental water policies in an Australian tropical river
No full text<b>External Organisations</b><br/>Biometric Research; Department of Water and Environmental Regulation (Western Australia)<b>Associated Persons</b><br/>Daniel Gwinn (Creator); Robyn Loomes (Creator)This dataset includes riparian vegetation composition and structure data, collected from the lower Fitzroy River, WA (2018).
The data accompanies the following research outputs;
- Canham, C. A., Beesley, L. S., Gwinnn, D. C., Douglas, M. M., Setterfield, S. A., Freestone, F. L., Pusey, B. J. & Loomes, R. C. (2021). Predicting the occurrence of riparian woody species to inform environmental water policies in an Australian tropical river. Freshwater Biology., 66, 2251– 2263. https://doi.org/10.1111/fwb.13829
- Freestone F. L., Canham C. A., Setterfield S. A., Douglas M. M., Beesley L. S. & Loomes R. C. (2022). Characterising the woody vegetation in contrasting habitat types in the lower Fitzroy River, Western Australia. Australian Journal of Botany 70, 421-431. https://doi.org/10.1071/BT22039
- Freestone F. L., Canham C. A., Setterfield S. A., Douglas M. M. & Loomes R. C. (2021). Characterising vegetation zones along the lower Fitzroy River, Western Australia. University of Western Australia, Perth. https://nesplandscapes.edu.au/publications/characterising-vegetation-zones-along-the-lower-fizroy-river-western-australia-report/
This project is supported through funding from the Australian Government’s National Environmental Science Program through the Northern Australia Environmental Resources Hub.
For more information, please contact Samantha Setterfield [email protected]<mailto:[email protected]>
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
Functional traits of riparian trees in the lower Fitzroy River, Western Australia
No full text<b>Associated Persons</b><br/>Calum Woods (Creator)This dataset includes riparian vegetation functional trait data, collected from the lower Fitzroy River, WA (2019).
The data accompanies the following manuscript;
Canham, C. A., Woods, C., Setterfield, S. A., Veneklaas, E. J., Freestone, F. L., Beesley, L. S., & Douglas, M. M. (2023). Functional traits of riparian trees in the lower Fitzroy River, Western Australia. Ecohydrology, 16(1), e2488. https://doi.org/10.1002/eco.2488
This project is supported through funding from the Australian Government’s National Environmental Science Program through the Northern Australia Environmental Resources Hub.
For more information, please contact Samantha Setterfield [email protected]<mailto:[email protected]>
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
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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