Speeches of H.W. Allan, M.P. and W. McGregor, M.P. on the fisheries of the Great Lakes Ottawa, Friday, 5th July, 1895

Allan, Hugh; McGregor, W. S.

doi:10.5962/bhl.title.38664

Cited by 3 publications

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“…p 3 is a singularity of order −2/3 since its joint curvature is zero. In d-wave superconductors and iron-based superconductors with high anisotropy [2,6], some hot spots are resolved by FT-STS measurements among all the singu-larities, which are interpreted by the octet model. Some of them are obviously close to higher-order singularities.…”

Section: Discussion For Some Casesmentioning

confidence: 98%

“…The relevance of the JDOS picture to FT-STS has been suggested [10] theoretically and checked experimentally [11][12][13]. Numerical [6,14,15] and approximately analytical [14,15] works show that JDOS surely can repeat the QPI pattern observed by FT-STS and match the observed octet vectors quite well. However, the main inconsistency of the JDOS interpretation is that the QPI pattern actually corresponds to the FT-LDOS.…”

Section: Introductionmentioning

confidence: 86%

“…It is astonishing that the intrinsic momentum-space electronic structure can be reflected by imperfections and obtained by a real-space measurement. Since then the FT-STS technique has been widely applied to study the Fermi surface and energy gap structure in d-wave cuprates [2][3][4] and iron-based superconductors [5,6] as well as the surface bands of topological insulators [7][8][9] by imaging the modulation of local density of states (LDOS). The modulation is caused by the interference of quasiparticles scattered elastically off imperfection on the material surface.…”

Section: Introductionmentioning

confidence: 99%

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Exact analysis on the singularity of the joint density of states and its relationship to the quasiparticle interference

Han,

Zhang,

Wang

2012

Preprint

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Singularities of the joint density of states (JDOS) and Fourier-transformed local density of states (FT-LDOS) correspond to the hot spots in quasiparticle interference patterns. In this paper the singularity of JDOS is analyzed exactly, with three types of singularities being classified. In particular, the third type of singularities are found exactly to be envelopes of the contours of constant energy. Remarkably, we show that JDOS and FT-LDOS have the same singular points. Approaching to the singular points, both quantities diverge complementarily in an inverse-square-root manner if the joint curvature is nonzero. The relative magnitude of divergence is governed by the joint curvature as well as the product of the quasiparticle velocities. If the joint curvature of certain singularity is zero, the divergence has a higher order than −1/2.

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Section: Discussion For Some Casesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

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Exact analysis on the singularity of the joint density of states and its relationship to the quasiparticle interference

Han,

Zhang,

Wang

2012

Preprint

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“…High levels of mirex are typically observed in wildlife from Lake Ontario relative to that of the other Great Lakes as a result of its release from two historical sources located upstream from Lake Ontario [69]. To our knowledge, mirex levels in great black-backed gull eggs are among the highest ever detected in fish-eating birds nesting on the Great Lakes in the 1990s [58,59].…”

Section: Contaminants In Eggsmentioning

confidence: 99%

“…Extensive biological monitoring has shown contaminant-related effects in herring gulls, doublecrested cormorants (Phalacrocorax auritus), black-crowned night herons (Nycticorax nycticorax), and common terns (Sterna hirundo) [76][77][78][79][80]. Following a decline in levels of a number of contaminants in the Lake Ontario food web since the mid-1970s, the reproductive success of most avian species has improved considerably [69].…”

Section: Relationship Of Contaminants To Bald Eagle Productivity On Lmentioning

confidence: 99%

Herring Gulls and Great Black-Backed Gulls as Indicators of Contaminants in Bald Eagles in Lake Ontario, Canada

Weseloh¹,

Hughes²,

Ewins³

et al. 2002

Environ Toxicol Chem

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In 2000, a pair of bald eagles (Haliaeetus leucocephalus) nested successfully along the shorelines of Lake Ontario in North America for the first time since 1957. However, it is a continuing question whether bald eagles will be able to reproduce successfully as they return to nest on Lake Ontario. Great black-backed gulls (Larus marinus) and herring gulls (L. argentatus) were selected as surrogate species to predict contaminant levels in eggs of bald eagles nesting on Lake Ontario. Because of the suspected overlap in the diets of great black-backed gulls and bald eagles (i.e., fish, gull chicks, and waterfowl), the two species probably occupy a similar trophic level in the Lake Ontario food web and, thus, may have similar contaminant levels. Fresh great black-backed gull and herring gull eggs were collected from three study sites in eastern Lake Ontario in 1993 and 1994 and analyzed for contaminants. Average contaminant levels of dichlorodiphenyldichloroethane (p,p'-DDE), total polychlorinated biphenyls (PCBs), and dieldrin in great black-backed gull eggs were 12.85, 26.27, and 0.27 microg/g, respectively. The mean ratio of contaminant levels in great black-backed gull eggs to contaminant levels in herring gull eggs for these three contaminants was 2.09 (range of means, 1.73-2.38). Predicted levels of contaminants in bald eagle eggs in Lake Ontario would be expected to be similar to the mean levels reported for great black-backed gull eggs. As a comparison, contaminant levels in bald eagle eggs collected from other Great Lakes nesting sites were compared to mean levels reported for herring gull eggs collected from nearby sites in 1986 to 1995. The mean ratio of contaminant levels in bald eagle eggs to contaminant levels in herring gull eggs from these sites for DDE, total PCBs, and dieldrin was 2.40 (range of means, 1.73-3.28). These ratios are very similar to those reported using great black-backed gull eggs, illustrating the apparent similarity in trophic status shared by the two top predator species at these Great Lakes sites. Predicted levels of contaminants in bald eagle eggs at Lake Ontario are similar to levels reported for bald eagles breeding at other Great Lakes sites, suggesting that bald eagles may be able to breed on the shores of Lake Ontario. However, it is unclear at this time what level of breeding success should be expected, given that productivity at other similarly contaminated Great Lakes sites may be below that required to sustain a successful breeding population. The absence of an inland bald eagle population from which bald eagles may begin to colonize the shorelines of Lake Ontario may be delaying initiation of nesting site selection; other factors such as habitat and prey availability would likely not limit reproductive success.

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Propriedades estruturais e dinamicas de misturas liquidas binarias associativas

AparecidaBorin¹

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The structural and dynamic properties of two sets of liquid state associating mixtures were investigated through molecular dynamics simulations. In one of them, the system was composed by DMSO and water in proportions that scanned all range of molar fractions of the constituents. By structural analysis was possible to identify, in all mixtures, the presence of two kinds of DMSO-water aggregates with composition 1:2 or 2:1. The proportion of molecules participating in these aggregates changed with the system composition. The interference of that last structure in the reorientational dynamics of water could be detected in calculated far infrared spectra, which suggests that this experimental technique could be efficient to detect the presence of such aggregates. In the other set of binary mixtures, the reorganization dynamics of aqueous mixtures of methanol arround diatomic solutes was studied. The reorganization of the solvation shells along the time from the instant of the solute's charge redistribution was followed by radial distribution function profiles. Different size solutes were employed to examine the charge density influence over this dynamic. xiii CURRICULUM VITAE

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Speeches of H.W. Allan, M.P. and W. McGregor, M.P. on the fisheries of the Great Lakes Ottawa, Friday, 5th July, 1895

Cited by 3 publications

References 0 publications

Exact analysis on the singularity of the joint density of states and its relationship to the quasiparticle interference

Exact analysis on the singularity of the joint density of states and its relationship to the quasiparticle interference

Herring Gulls and Great Black-Backed Gulls as Indicators of Contaminants in Bald Eagles in Lake Ontario, Canada

Propriedades estruturais e dinamicas de misturas liquidas binarias associativas

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