51 research outputs found

    Investigating NCE Preservice Candidates and Graduates’ Visual Literacy Practices in Middle and High School Science and Social Studies Classrooms

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    The study investigates whether secondary education science and social studies candidates transferred what they learned about visual literacy in their teacher preparation program to their practicum/student teaching classrooms. The study included qualitative and quantitative methods to document the candidates’ visual literacy knowledge and practices. The findings indicate that the candidates did employ visual literacy strategies as visuals had already been regularly used in their classrooms. But, they had limited success in implementing the strategies learned in their methods courses. In addition, they showed a good working knowledge of what visual literacy is and acknowledged its value in the classroom. They also stated that the use of visuals and visual literacy would be integral parts of their teaching in the future

    A review of the toxicology of oil in vertebrates : what we have learned following the Deepwater Horizon oil spill

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    This research was made possible by a grant from The Gulf of Mexico Research Initiative. This publication is UMCES contribution No. 6045 and Ref. No. [UMCES] CBL 2022-008. This is National Marine Mammal Foundation Contribution #314 to peer-reviewed scientific literature.In the wake of the Deepwater Horizon (DWH) oil spill, a number of government agencies, academic institutions, consultants, and nonprofit organizations conducted lab- and field-based research to understand the toxic effects of the oil. Lab testing was performed with a variety of fish, birds, turtles, and vertebrate cell lines (as well as invertebrates); field biologists conducted observations on fish, birds, turtles, and marine mammals; and epidemiologists carried out observational studies in humans. Eight years after the spill, scientists and resource managers held a workshop to summarize the similarities and differences in the effects of DWH oil on vertebrate taxa and to identify remaining gaps in our understanding of oil toxicity in wildlife and humans, building upon the cross-taxonomic synthesis initiated during the Natural Resource Damage Assessment. Across the studies, consistency was found in the types of toxic response observed in the different organisms. Impairment of stress responses and adrenal gland function, cardiotoxicity, immune system dysfunction, disruption of blood cells and their function, effects on locomotion, and oxidative damage were observed across taxa. This consistency suggests conservation in the mechanisms of action and disease pathogenesis. From a toxicological perspective, a logical progression of impacts was noted: from molecular and cellular effects that manifest as organ dysfunction, to systemic effects that compromise fitness, growth, reproductive potential, and survival. From a clinical perspective, adverse health effects from DWH oil spill exposure formed a suite of signs/symptomatic responses that at the highest doses/concentrations resulted in multi-organ system failure.Publisher PDFPeer reviewe

    Fast simulation of muons produced at the SHiP experiment using generative adversarial networks

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    This paper presents a fast approach to simulating muons produced in interactions of the SPS proton beams with the target of the SHiP experiment. The SHiP experiment will be able to search for new long-lived particles produced in a 400 GeV/c SPS proton beam dump and which travel distances between fifty metres and tens of kilometers. The SHiP detector needs to operate under ultra-low background conditions and requires large simulated samples of muon induced background processes. Through the use of Generative Adversarial Networks it is possible to emulate the simulation of the interaction of 400 GeV/c proton beams with the SHiP target, an otherwise computationally intensive process. For the simulation requirements of the SHiP experiment, generative networks are capable of approximating the full simulation of the dense fixed target, offering a speed increase by a factor of Script O(106). To evaluate the performance of such an approach, comparisons of the distributions of reconstructed muon momenta in SHiP's spectrometer between samples using the full simulation and samples produced through generative models are presented. The methods discussed in this paper can be generalised and applied to modelling any non-discrete multi-dimensional distribution

    The experimental facility for the Search for Hidden Particles at the CERN SPS

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    The International School for Advanced Studies (SISSA) logo The International School for Advanced Studies (SISSA) logo The following article is OPEN ACCESS The experimental facility for the Search for Hidden Particles at the CERN SPS C. Ahdida44, R. Albanese14,a, A. Alexandrov14, A. Anokhina39, S. Aoki18, G. Arduini44, E. Atkin38, N. Azorskiy29, J.J. Back54, A. Bagulya32Show full author list Published 25 March 2019 ‱ © 2019 CERN Journal of Instrumentation, Volume 14, March 2019 Download Article PDF References Download PDF 543 Total downloads 7 7 total citations on Dimensions. Article has an altmetric score of 1 Turn on MathJax Share this article Share this content via email Share on Facebook Share on Twitter Share on Google+ Share on Mendeley Article information Abstract The Search for Hidden Particles (SHiP) Collaboration has shown that the CERN SPS accelerator with its 400 GeV/c proton beam offers a unique opportunity to explore the Hidden Sector [1–3]. The proposed experiment is an intensity frontier experiment which is capable of searching for hidden particles through both visible decays and through scattering signatures from recoil of electrons or nuclei. The high-intensity experimental facility developed by the SHiP Collaboration is based on a number of key features and developments which provide the possibility of probing a large part of the parameter space for a wide range of models with light long-lived super-weakly interacting particles with masses up to Script O(10) GeV/c2 in an environment of extremely clean background conditions. This paper describes the proposal for the experimental facility together with the most important feasibility studies. The paper focuses on the challenging new ideas behind the beam extraction and beam delivery, the proton beam dump, and the suppression of beam-induced background

    Digital Storytelling: The Arts and Preservice Teachers

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    In this presentation, the authors describe a journey of teachers in a graduate Fine Arts Methods course. The journey began with conversations about what art is and the nature of collections in exploring this question. Elements of visual literacy, storytelling and music were investigated. The final product was a Digital Story incorporating all of these elements into a teaching artifact that integrated the Arts into other content areas for K-8 students

    A COMPARATIVE ASSESSMENT OF AZINPHOSMETHYL BIOACCUMULATION AND TOXICITY IN TWO ESTUARINE MEIOBENTHIC HARPACTICOID COPEPODS

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    Abstract—Aqueous, pore-water, and whole-sediment bioassays were conducted with meiobenthic copepods with different infaunal lifestyles to assess the acute and chronic toxicity of the organophosphorous pesticide azinphosmethyl (APM) and its bioaccumulation potential in sediments. Biota sediment accumulation factors were an order of magnitude higher for the deeper burrowing Amphiascus tenuiremis (26.6) than the epibenthic Microarthridion littorale (2.2). The female A. tenuiremis APM median lethal concentration (LC50; 3.6 mg/L) was twice the male LC50 (1.8 mg/L), in straight seawater exposures, and nearly 20 % higher than males in whole-sediment exposures (540 vs 456 ng/g dry weight). Amphiascus tenuiremis were 17 times more sensitive to sediment-associated APM than M. littorale. In pore-water–only exposures, the adult mixed-sex A. tenuiremis LC50 (5.0 mg/L) was nearly twice the seawater mixed-sex LC50 (2.7 mg/L). Dissolved organic carbon in pore water was five times higher (20 mg/L) than in seawater-only exposures (4 mg/L). Differences in acute toxicity within exposure media were driven by species- and sex-specific differences in lipid content. Amphiascus tenuiremis likely experienced greater exposure to sediment-associated toxicants via longer periods of direct contact with pore water than M. littorale and, therefore, exhibited correspondingly higher bioaccumulation and acute toxicity. Copepod reproduction was significantly reduced (.60%) in 14-d sediment culture exposures at sublethal APM levels, suggestin

    Corneal Involvement In Primary Biliary Cirrhosis : An In Vivo Confocal Microscopy Study

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    Purpose:To investigate the corneal involvement in Primary Biliary Cirrhosis (PBC), a slowly progressive cholestatic liver disease of autoimmune etiology. Methods:Seven female patients affected by PBC underwent a slit-lamp biomicroscopy of the anterior segment with and without Goldmann's three-mirror contact lens, and laser scanning confocal microscopy (LSCM, Heidelberg Engineering Germany). LSCM images were acquired and analyzed for all layers of central and peripheral cornea (four quadrants). Results:All patients had normal findings both at slit-lamp biomicroscopy and at gonioscopy. Peculiar findings were shown at LSCM: all patients showed keratocytes activation (Figure 1); sub-basal nerve fibers with beadlike structure (Figure 2) were found in six patients (86%); four subjects (57%) had hyper-reflective stromal macro-deposits (Figure 2). No deposits suggestive for copper deposition were detected at the level of Descemet\u2019s membrane. Conclusions:To the best of our knowledge this is the first confocal microscopy study on PBC patients. LSCM could show that subclinical corneal inflammation is a very common finding also in ophthalmoscopically normal patients affected by this autoimmune disease
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