86 research outputs found

    The Odyssey of Palazzolo: Public Rights Litigation and Coastal Change

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    The question of whether the state has the right to “take” (in the form of regulation) land in its coastal zones is a much more complex question that the courts, to date, have not been able to manage adequately. The problems faced along the coasts are difficult problems, and will likely not be settled by asking judges to determine the “rightness” of claims made through an adversarial process that tends to oversimplify situations in the process of constructing winnable legal arguments. Nor can we rely simply on administrative agencies or legislatures to protect the rights of individuals or protect them adequately from natural disasters. Clearly, the citizenry needs to be more active in these matters, and the administrative process needs to be both transparent and simplified. Quite frankly, it makes as much sense to have these cases drag out over decades as it does to have them framed in a way that oversimplifies the complex political challenges facing the governments attempting to regulate their coasts. The courts should stand ready to engage in oversight of these processes; but, if we can learn anything from Palazzolo, it may be that litigating with an overly simple goal of increasing private property rights could, in fact, only make matters more difficult because it will force the courts to continue muddling the waters of the takings clause. From a social science perspective, the longer the resolution, the more complicated and difficult the situation becomes. Prolonging the process into decades, then, is the last thing that should happen

    Chemical Communication: The Effects of Stress-Induced Apocrine Sweat on Human Perceptions and Interactions

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    In times of stress, humans secrete a type of sweat (apocrine sweat) that they do not secrete at any other time. This sweat has been previously shown to influence others who are exposed to it. The current project seeks to explore how apocrine sweat influences the people who are exposed to it. Using the framework of Emotional Contagion Theory, two studies were conducted to assess the effects of stress-induced apocrine sweat on human perceptions and interactions. Study 1 saw participants exposed to either thermoregulatory sweat or apocrine sweat before watching a short, fear-inducing video. Participants then reported their levels of psychological fear, physical fear, and how afraid they thought others would be in response to the video. Results indicate that exposure to apocrine sweat increases the level of fear reported, and that this effect is stronger for women than it is for men. The effect is consistent regardless of how susceptible one is to other forms of emotional contagion. Study 2 saw a romantic couple exposed to either thermoregulatory sweat or apocrine sweat before engaging in a conflict discussion. Participants then reported on their levels of anger and their partner’s levels of anger as compared to their typical discussion about the topic. Results indicate that exposure to apocrine sweat is associated with a reduction in the couple’s levels of anger. This effect was equally strong for men and women, and was not influenced by susceptibility to other forms of emotional contagion. Overall, results indicate that apocrine sweat has discernable effects on human perceptions and interactions

    Sphingolipids Regulate Neuromuscular Synapse Structure and function in Drosophila

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    Sphingolipids are found in abundance at synapses and have been implicated in regulation of synapse structure, function and degeneration. Their precise role in these processes, however, remains obscure. Serine Palmitoyl-transferase (SPT) is the first enzymatic step for synthesis of sphingolipids. Analysis of the Drosophila larval neuromuscular junction revealed mutations in the SPT enzyme subunit, lace/SPTLC2 resulted in deficits in synaptic structure and function. Although neuromuscular junction (NMJ) length is normal in lace mutants, the number of boutons per NMJ is reduced to ~50% of the wild type number. Synaptic boutons in lace mutants are much larger but show little perturbation to the general ultrastructure. Electrophysiological analysis of lace mutant synapses revealed strong synaptic transmission coupled with predominance of depression over facilitation. The structural and functional phenotypes of lace mirrored aspects of Basigin (Bsg), a small Ig-domain adhesion molecule also known to regulate synaptic structure and function. Mutant combinations of lace and Bsg generated large synaptic boutons, while lace mutants showed abnormal accumulation of Bsg at synapses, suggesting that Bsg requires sphingolipid to regulate structure of the synapse. In support of this, we found Bsg to be enriched in lipid rafts. Our data points to a role for sphingolipids in the regulation and fine-tuning of synaptic structure and function while sphingolipid regulation of synaptic structure may be mediated via the activity of Bsg

    The Role of Microbial Exopolymers in Determining the Fate of Oil and Chemical Dispersants in the Ocean

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    The production of extracellular polymeric substances (EPS) by planktonic microbes can influence the fate of oil and chemical dispersants in the ocean through emulsification, degradation, dispersion, aggregation, and/or sedimentation. In turn, microbial community structure and function, including the production and character of EPS, is influenced by the concentration and chemical composition of oil and chemical dispersants. For example, the production of marine oil snow and its sedimentation and flocculent accumulation to the seafloor were observed on an expansive scale after the Deepwater Horizon oil spill in the Northern Gulf of Mexico in 2010, but little is known about the underlying control of these processes. Here, we review what we do know about microbially produced EPS, how oil and chemical dispersant can influence the production rate and chemical and physical properties of EPS, and ultimately the fate of oil in the water column. To improve our response to future oil spills, we need a better understanding of the biological and physiochemical controls of EPS production by microbes under a range of environmental conditions, and in this paper, we provide the key knowledge gaps that need to be filled to do so

    Towards a framework for critical citizenship education

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    Increasingly countries around the world are promoting forms of "critical" citizenship in the planned curricula of schools. However, the intended meaning behind this term varies markedly and can range from a set of creative and technical skills under the label "critical thinking" to a desire to encourage engagement, action and political emancipation, often labelled "critical pedagogy". This paper distinguishes these manifestations of the "critical" and, based on an analysis of the prevailing models of critical pedagogy and citizenship education, develops a conceptual framework for analysing and comparing the nature of critical citizenship

    The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe

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    The preponderance of matter over antimatter in the early Universe, the dynamics of the supernova bursts that produced the heavy elements necessary for life and whether protons eventually decay --- these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our Universe, its current state and its eventual fate. The Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed plan for a world-class experiment dedicated to addressing these questions. LBNE is conceived around three central components: (1) a new, high-intensity neutrino source generated from a megawatt-class proton accelerator at Fermi National Accelerator Laboratory, (2) a near neutrino detector just downstream of the source, and (3) a massive liquid argon time-projection chamber deployed as a far detector deep underground at the Sanford Underground Research Facility. This facility, located at the site of the former Homestake Mine in Lead, South Dakota, is approximately 1,300 km from the neutrino source at Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino charge-parity symmetry violation and mass ordering effects. This ambitious yet cost-effective design incorporates scalability and flexibility and can accommodate a variety of upgrades and contributions. With its exceptional combination of experimental configuration, technical capabilities, and potential for transformative discoveries, LBNE promises to be a vital facility for the field of particle physics worldwide, providing physicists from around the globe with opportunities to collaborate in a twenty to thirty year program of exciting science. In this document we provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess.Comment: Major update of previous version. This is the reference document for LBNE science program and current status. Chapters 1, 3, and 9 provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess. 288 pages, 116 figure

    Genomic investigations of unexplained acute hepatitis in children

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    Since its first identification in Scotland, over 1000 cases of unexplained pediatric hepatitis in children have been reported worldwide, including 278 cases in the UK 1. Here we report investigation of 38 cases, 66 age-matched immunocompetent controls and 21 immunocompromised comparator subjects, using a combination of genomic, transcriptomic, proteomic and immunohistochemical methods. We detected high levels of adeno-associated virus 2 (AAV2) DNA in liver, blood, plasma or stool from 27/28 cases. We found low levels of Adenovirus (HAdV) and Human Herpesvirus 6B (HHV-6B), in 23/31 and 16/23 respectively of the cases tested. In contrast, AAV2 was infrequently detected at low titre in blood or liver from control children with HAdV, even when profoundly immunosuppressed. AAV2, HAdV and HHV-6 phylogeny excluded emergence of novel strains in cases. Histological analyses of explanted livers showed enrichment for T-cells and B-lineage cells. Proteomic comparison of liver tissue from cases and healthy controls, identified increased expression of HLA class 2, immunoglobulin variable regions and complement proteins. HAdV and AAV2 proteins were not detected in the livers. Instead, we identified AAV2 DNA complexes reflecting both HAdV and HHV-6B-mediated replication. We hypothesize that high levels of abnormal AAV2 replication products aided by HAdV and in severe cases HHV-6B, may have triggered immune-mediated hepatic disease in genetically and immunologically predisposed children
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