297 research outputs found

    Moving Backwards: Does the Lack of Duty to Consult Create the Right to Infringe Aboriginal and Treaty Rights?

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    The federal and provincial governments have a duty to consult Aboriginal people when they propose to authorize development activities that may impact Aboriginal or treaty rights.This article comments on two recent cases addressing the role of third parties, such as municipalities and private businesses, in the duty to consult and accommodate. In Neskonlith Indian Band v Salmon Arm City and Wahgoshig First Nation v Solid Gold Resources Corp, the courts focused on whether the particular entity had a duty to consult. The consequence of finding no duty to consult was that the activity in dispute could proceed. This case commentary argues that the courts conflate who has the duty to consult and whether consultation is necessary before a project can proceed. These are two separate legal issues. Consultation is a condition precedent to proceeding with a project that infringes or potentially infringes Aboriginal rights

    Supersymmetric Axion-Neutrino Merger

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    The recently proposed supersymmetric A4A_4 model of the neutrino mass matrix is modified to merge with a previously proposed axionic solution of the strong CP problem. The resulting model has only one input scale, i.e. that of A4A_4 symmetry breaking, which determines both the seesaw neutrino mass scale and the axion decay constant. It also solves the μ\mu problem and conserves R parity automatically.Comment: 7 pages, no figur

    Extremely long quasiparticle spin lifetimes in superconducting aluminium using MgO tunnel spin injectors

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    There has been an intense search in recent years for long-lived spin-polarized carriers for spintronic and quantum-computing devices. Here we report that spin polarized quasi-particles in superconducting aluminum layers have surprisingly long spin-lifetimes, nearly a million times longer than in their normal state. The lifetime is determined from the suppression of the aluminum's superconductivity resulting from the accumulation of spin polarized carriers in the aluminum layer using tunnel spin injectors. A Hanle effect, observed in the presence of small in-plane orthogonal fields, is shown to be quantitatively consistent with the presence of long-lived spin polarized quasi-particles. Our experiments show that the superconducting state can be significantly modified by small electric currents, much smaller than the critical current, which is potentially useful for devices involving superconducting qubits

    The human face of security: Asia-Pacific perspectives

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    This is an edited collection of papers about the meanings of human security in an Asian-Pacific context, stemming from a conference held in New Zealand in 2001

    Preliminary study of neuroimaging and psychophysiology in adults with ADHD

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    Attention Deficit Hyperactivity Disorder  (ADHD) affects in both children and adults leading to poor executive functioning and quality of life. However, very little study focuses on neuroimaging and psychophysiology in the adults with ADHD. This preliminary study aimed to report neuroimaging and psychophysiology outcomes in the adults with ADHD. Participants in this study consisted of three groups: unaffected fathers of offspring with ADHD, adults with ADHD, and matched controls, were enrolled. A psychological battery was used in order to assess the participants’ cool cognitive function. Levels of dopaminergic activity were assessed by using the single positron emission computed tomography (SPECT) with [99mTc] TRODAT-1. In a pilot test for further study, the Iowa gambling test in a mock functional MRI was conducted. Molecular neuroimaging indicated the pivotal role of dopaminergicactivity altered a swellas functional brain imaging demonstrated difference between cool and hot executive functions. Using the Event-Related Potentials (ERP), the P300 amplitude of adults with ADHD was found to be lower than healthy group. In conclusions, Neuroimaging and psychophysiology outcome were effectively identified in adult with ADHD. Further study of neuroendocrinological factors might be related

    Photobiocidal-triboelectric nanolayer coating of photosensitizer/silica-alumina for reusable and visible-light-driven antibacterial/antiviral air filters

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    Outbreaks of airborne pathogens pose a major threat to public health. Here we present a single-step nanocoating process to endow commercial face mask filters with photobiocidal activity, triboelectric filtration capability, and washability. These functions were successfully achieved with a composite nanolayer of silica-alumina (Si-Al) sol-gel, crystal violet (CV) photosensitizer, and hydrophobic electronegative molecules of 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane (PFOTES). The transparent Si-Al matrix strongly immobilized the photosensitizer molecules while dispersing them spatially, thus suppressing self-quenching. During nanolayer formation, PFOTES was anisotropically rearranged on the Si-Al matrix, promoting moisture resistance and triboelectric charging of the Si-Al/PFOTES-CV (SAPC)-coated filter. The SAPC nanolayer stabilized the photoexcited state of the photosensitizer and promoted redox reaction. Compared to pure-photosensitizer-coated filters, the SAPC filter showed substantially higher photobiocidal efficiency (∼99.99 % for bacteria and a virus) and photodurability (∼83 % reduction in bactericidal efficiency for the pure-photosensitizer filter but ∼0.34 % for the SAPC filter after 72 h of light irradiation). Moreover, after five washes with detergent, the SAPC filter maintained its photobiocidal and filtration performance, proving its reusability potential. Therefore, this SAPC nanolayer coating provides a practical strategy for manufacturing an antimicrobial and reusable mask filter for use during the ongoing COVID-19 pandemic
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