4,056 research outputs found
Providence College Faculty Author Series 2012-2013: Dr. Adrian Weimer
No full textDr. Adrian Weimer (History, Providence College) discusses her new book Martyrs\u27 Mirror: Persecution and Holiness in Early New England and the cultural importance of martyrdom within Colonial America
Providence College Faculty Author Series 2012-2013: Dr. Adrian Weimer
No full textDr. Adrian Weimer (History, Providence College) discusses her new book Martyrs\u27 Mirror: Persecution and Holiness in Early New England and the cultural importance of martyrdom within Colonial America
Adrian Matejka, 34th Annual ODU Literary Festival
No full textAdrian Matejka is the author of The Devil’s Garden and Mixology, which was a winner of the 2008 National Poetry Series. He is the recipient of two Illinois Arts Council Literary Awards and fellowships from Cave Canem and the Lannan Foundation. His work has been featured in American Poetry Review, The Best American Poetry 2010, and Ploughshares, among other journals and anthologies. He teaches at Southern Illinois University Edwardsville
Restive properties and detection of fish
No full textThis thesis details the development of a new method of fish detection and measurement that is designed for operation across a river channel without the need for a permanent man-made structure.The method is based on an array of small sensor units that may be extended to monitor an entire river width. An electronic resistance sensor, personal computer interface control and automatic calibration were developed and tested for the detection and measurement of resistive targets. The sensor could detect 306 mm resistive targets at a range of 700 mm with a basic accuracy of 25 ppm.Stainless steel rod and freshly killed fish targets produced very similar changes in the electrical resistance measured between wide-spaced point electrodes. Subsequent measurements indicated relationships between resistance change signal (RCS) and resistive target length, position, water depth, water conductivity and electrode separation. Mathematical models were developed to describe the relationship between RCS and electrode separation, target length and target range from the plane of the electrodes.The mathematical models were incorporated into computer simulations of two methods of target range compensation. Both of these methods were shown to reduce the target length estimation error, compared with no target range compensation, by ≥ 62%. A system that used six point electrodes to compensate for target range was shown to length targets with high accuracy compared with existing systems (± 40 mm length error (1.96 σ) at a range of 650 mm).</p
A noninvasive monitoring device for anesthetics in fish
No full textA noninvasive device capable of recording both gill and lateral fin movements
was assembled and used to analyze initial and post-treatment activity frequency (Hz) in fish
exposed to anesthetics. Exposure of platy fish (Xiphosphorus maculatus) to saponins from
quillaja bark (0.185 mM and 0.555 mM) initially caused hyperactivity, but within five minutes
all activity ceased and the fish failed to recover. In contrast, clove oil (67 μg/L) added to water
at 22oC reduced activity by 22.8% ± 8.9% (P = 0.038) after 125 ± 19 sec, a sedative effect that
was totally reversible. Cinnamon oil compared with clove oil had a significantly longer time
to sedation (125 ± 19 versus 235 ± 24 sec, P = 0.02), although no significant difference in the
decline in activity was noted.DMP acknowledges the support of an
STMS exchange grant funded in the context of COST 925
action
Corrigendum to “Length based SPR assessment of eleven Indo-Pacific coral reef fish populations in Palau” [Fish. Res. 171 (2015) 42–58]
No full textRefers to: Jeremy Prince, Steven Victor, Valentino Kloulchad, Adrian Hordyk Length based SPR assessment of eleven Indo-Pacific coral reef fish populations in Palau
Fisheries Research, Volume 171, November 2015, Pages 42-5
Comparative ecology and phylogeography in east African cichild fishes
No full textSince almost two decades speciation outbursts, so-called adaptive radiations, have been put forward as a major reason for a large portion of the bio-diversity we see today. Adaptive radiations are indisputably very complex processes with many factors to consider. They are, however, not separable from the concept of ecological speciation by the means of natural selection. Hence the concept of convergent evolution, which states that different organisms independently evolve similar morphological or behavioral traits as a result of similar ecological selection regimes, was put forward as an essential indicator of the ‘adaptiveness’ of respective species differences and/or similarities. In the exceptionally species rich and eco-morphologically highly diverse assemblages of the East African Rift lakes, the paradox was put forward that competitive ecological exclusion of converging species seems to require a temporal and special separation (allopatry) of the different lineages in order for them to coexist. Recent phylogenetic framework and molecular dating seem to indicate though that in fact many lineages formed very rapidly thus not allowing the avoidance of competitive exclusion.
These are questions addressed in the first part of my thesis (“Comparative ecology”) consisting of two Chapters. 1: “Convergent evolution within an adaptive radiation of cichlid fishes” where we investigated ecologically based convergence within the Lake Tanganyika cichlid radiation and 2. “The ecological and genetic basis of convergent thick-lipped phenotypes in cichlid fishes” where we investigated the convergent occurrence of a conspicuous trait which is thought to be highly adaptive, the thick lipped phenotype of cichlid fishes.
Considering the strong connectivity of convergent evolution with the ecological properties of a habitat mediated by natural selection it is apparently crucial to study ecological parameters of habitats connected by convergent phenotypes which we did in Chapter 3: "Depth-dependent abundance of Midas Cichlid fish (Amphilophus spp.) in two Nicaraguan crater lakes". Here we characterised effective population sizes by means of transect methods in order to compare two lakes exhibiting convergent phenotypes.
In a second part (“Phylogeography”) I combine different studies dealing with a combination of distributional patterns, patterns of phylogenetic relationships and ecological factors of east African riverine cichlids since they have become increasingly important in the understanding of large-scale relations of African cichlid fishes. In Chapter 4: “Back to Tanganyika: a case of a recent immigration into a species flock of East African cichlid fishes” we investigate a recently discovered dispersal event of a modern cichlid lineage (Haplochromis spp.) across major watershed barriers in Eastern Africa. In Chapter 5: “Divergence between lake and stream habitats in an East African cichlid fish” we investigate the degree of ecological divergence of a riverine cichlid species, which also occurs in pure lake habitats (Astatotilapia burtoni). In Chapter 6: “Admixture between divergent mitochondrial lineages and greater phenotypic variation in a basal haplochromine cichlid fish from Lake Chila, Zambia” we investigate the phylogeographic history of a basal haplochormine clade (genus: Pseudocrenilabrus).
Morphological diversity within natural populations is a crucial prerequisite for natural selection to act on and to enable ecological adaptive evolution. A special case of such morphological variation, the mouth asymmetry of scale eating cichlid fish of Lake Tanganyika, was the main topic of the third part of my thesis (“Asymmetrical Polymorphism”) and Chapter 7: “A field based assessment of attack strategies and feeding success in the scale eating cichlid fish Perissodus microlepis (Perciformes)”
Performing the archive: following in the footsteps
No full textUsing documentation of Mike Pearson's performance 'Bubbling Tom', Deirdre Heddon attempts to step into his shoes and re-perform it
jinker fish
No full textjinker nThe fish left in the boat by mistake and carried back to sea the next day. It was considered a jinker (bad luck) and the belief was that no fish would be caught that day.JH 3/72 DNE-citUsed I and SupUsed I and Sup2Used Ijinker-fish, jinxerChecked by Adrian Young on Fri 12 Jun 2015; Checked by Cathy Wiseman on Mon 10 Aug 201
Electrochemical-control of abrasive polishing and machining rates, U.S. Patent 6,171,467
No full textAn apparatus and method is disclosed; both of which use electrochemistry to selectively grow and remove hard oxide coatings on metals, and capacitive double layers on non-metals and semiconductors in order to predict and control the rate of surface abrasion during planarization of the surface of such materials
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