790 research outputs found

    The Zika Virus Threat: How Concerns About Scientists May Undermine Efforts to Combat the Pandemic

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    Using data from the University of New Hampshire’s October 2016 Granite State Poll, authors Thomas Safford, Lawrence Hamilton, and Emily Whitmore investigate how New Hampshire residents view the Zika crisis. They report that most New Hampshire residents believe Zika is only a minor threat to public health in the United States, and they generally trust the CDC as a source of information about the virus. The data also show that, while there is doubt about the government’s ability to control the spread of the virus, the public feels that emergency federal funding to combat Zika should be a priority. They discuss that many Granite Staters have real concerns about the practice of science, believing scientists change their findings to get the answers they want. More importantly, individuals who questioned the integrity of scientists are less likely to believe Zika is a threat, have confidence in the government’s ability to combat the virus, trust the CDC, and to prioritize emergency funding. They conclude that these results suggest that health officials working to engage the public in efforts to control the spread of Zika must not only discuss risks associated with the virus and mechanisms of transmission, but also confront science skepticism and potential concerns about the integrity of the scientists gathering data related to Zika and other infectious diseases

    The Zika Virus Threat

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    Shocking images of infants with severe birth defects in Brazil introduced the world to the devastating effects of the Zika virus. This mosquito-borne illness spread rapidly across Latin America and into the United States. News stories highlighting locally transmitted cases of Zika in Florida, and most recently in Texas, created a sense of urgency among public health officials. They stepped up efforts to inform the public about the transmission of the virus as well as the health risks associated with Zika. Public polling shows that Americans are becoming increasingly concerned about the threat of Zika, and they question the government's ability to limit its spread. What is less clear are the factors influencing perceptions of the Zika pandemic and support for governmental efforts to curb the spread of the virus

    Bis(2-thien­yl)acetyl­ene

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    The planar [maximum deviation 0.0066 (4) Å] symmetrical mol­ecule of the title compound, C10H6S2, lies across a crystallographic inversion centre. The thio­phene rings are rotationally disordered about the acetyl­ene bond, with the two pseudo inversion-related S atoms in 0.80:0.20 occupancy sites. The C C bond distance is 1.195 (9) Å

    Follow the Scientists? How Beliefs about the Practice of Science Shaped COVID-19 Views

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    “Follow the science” became the mantra for responding to COVID-19 pandemic. However, for the public this also meant “follow the scientists,” and this led to uneasiness as some viewed scientists as not credible. We investigate how beliefs about the way scientists develop their findings affect pandemic-related views. Our analysis shows that beliefs about scientists’ objectivity predict views regrading coronavirus-related risks, behavioral changes, and policy priorities. While political party identity also predicts views about COVID-19-related concerns, these vary by political leaders whose approaches embraced versus dismissed science based strategies, highlighting the importance of perceptions of scientists in shaping pandemic related attitudes and beliefs

    Review of best management practices for aquatic vegetation control in stormwater ponds, wetlands, and lakes

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    Auckland Council (AC) is responsible for the development and operation of a stormwater network across the region to avert risks to citizens and the environment. Within this stormwater network, aquatic vegetation (including plants, unicellular and filamentous algae) can have both a positive and negative role in stormwater management and water quality treatment. The situations where management is needed to control aquatic vegetation are not always clear, and an inability to identify effective, feasible and economical control options may constrain management initiatives. AC (Infrastructure and Technical Services, Stormwater) commissioned this technical report to provide information for decision- making on aquatic vegetation management with in stormwater systems that are likely to experience vegetation-related issues. Information was collated from a comprehensive literature review, augmented by knowledge held by the authors. This review identified a wide range of management practices that could be potentially employed. It also demonstrated complexities and uncertainties relating to these options that makes the identification of a best management practice difficult. Hence, the focus of this report was to enable users to screen for potential options, and use reference material provided on each option to confirm the best practice to employ for each situation. The report identifies factors to define whether there is an aquatic vegetation problem (Section 3.0), and emphasises the need for agreed management goals for control (e.g. reduction, mitigation, containment, eradication). Resources to screen which management option(s) to employ are provided (Section 4.0), relating to the target aquatic vegetation, likely applicability of options to the system being managed, indicative cost, and ease of implementation. Initial screening allows users to shortlist potential control options for further reference (Section 5.0). Thirty-five control options are described (Section 5.0) in sufficient detail to consider applicability to individual sites and species. These options are grouped under categories of biological, chemical or physical control. Biological control options involve the use of organisms to predate, infect or control vegetation growth (e.g. classical biological control) or manipulate conditions to control algal growth (e.g. pest fish removal, microbial products). Chemical control options involve the use of pesticides and chemicals (e.g. glyphosate, diquat), or the use of flocculants and nutrient inactivation products that are used to reduce nutrient loading, thereby decreasing algal growth. Physical control options involve removing vegetation or algal biomass (e.g. mechanical or manual harvesting), or setting up barriers to their growth (e.g. shading, bottom lining, sediment capping). Preventative management options are usually the most cost effective, and these are also briefly described (Section 6.0). For example, the use of hygiene or quarantine protocols can reduce weed introductions or spread. Catchment- based practices to reduce sediment and nutrient sources to stormwater are likely to assist in the avoidance of algal and possibly aquatic plant problems. Nutrient removal may be a co-benefit where harvesting of submerged weed biomass is undertaken in stormwater systems. It should also be considered that removal of substantial amounts of submerged vegetation may result in a sudden and difficult-to-reverse s witch to a turbid, phytoplankton dominated state. Another possible solution is the conversion of systems that experience aquatic vegetation issues, to systems that are less likely to experience issues. The focus of this report is on systems that receive significant stormwater inputs, i.e. constructed bodies, including ponds, amenity lakes, wetlands, and highly-modified receiving bodies. However, some information will have application to other natural water bodies

    Dietary Methionine Restriction Regulates Liver Protein Synthesis and Gene Expression Independently of Eukaryotic Initiation Factor 2 Phosphorylation in Mice

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    Background: The phosphorylation of eukaryotic initiation factor 2 (p-eIF2) during dietary amino acid insufficiency reduces protein synthesis and alters gene expression via the integrated stress response (ISR).Objective: We explored whether a Met-restricted (MR) diet activates the ISR to reduce body fat and regulate protein balance.Methods: Male and female mice aged 3-6 mo with either whole-body deletion of general control nonderepressible 2 (Gcn2) or liver-specific deletion of protein kinase R-like endoplasmic reticulum kinase (Perk) alongside wild-type or floxed control mice were fed an obesogenic diet sufficient in Met (0.86%) or an MR (0.12% Met) diet for ≀5 wk. Ala enrichment with deuterium was measured to calculate protein synthesis rates. The guanine nucleotide exchange factor activity of eIF2B was measured alongside p-eIF2 and hepatic mRNA expression levels at 2 d and 5 wk. Metabolic phenotyping was conducted at 4 wk, and body composition was measured throughout. Results were evaluated with the use of ANOVA (P < 0.05).Results: Feeding an MR diet for 2 d did not increase hepatic p-eIF2 or reduce eIF2B activity in wild-type or Gcn2-/- mice, yet many genes transcriptionally regulated by the ISR were altered in both strains in the same direction and amplitude. Feeding an MR diet for 5 wk increased p-eIF2 and reduced eIF2B activity in wild-type but not Gcn2-/- mice, yet ISR-regulated genes altered in both strains similarly. Furthermore, the MR diet reduced mixed and cytosolic but not mitochondrial protein synthesis in both the liver and skeletal muscle regardless of Gcn2 status. Despite the similarities between strains, the MR diet did not increase energy expenditure or reduce body fat in Gcn2-/- mice. Finally, feeding the MR diet to mice with Perk deleted in the liver increased hepatic p-eIF2 and altered body composition similar to floxed controls.Conclusions: Hepatic activation of the ISR resulting from an MR diet does not require p-eIF2. Gcn2 status influences body fat loss but not protein balance when Met is restricted

    Loss of Nmp4 optimizes osteogenic metabolism and secretion to enhance bone quality

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    A goal of osteoporosis therapy is to restore lost bone with structurally sound tissue. Mice lacking the transcription factor Nuclear Matrix Protein 4 (Nmp4, Zfp384, Ciz, ZNF384) respond to several classes of osteoporosis drugs with enhanced bone formation compared to wild type (WT) animals. Nmp4-/- mesenchymal stem/progenitor cells (MSPCs) exhibit an accelerated and enhanced mineralization during osteoblast differentiation. To address the mechanisms underlying this hyper-anabolic phenotype, we carried out RNA-sequencing and molecular and cellular analyses of WT and Nmp4-/- MSPCs during osteogenesis to define pathways and mechanisms associated with elevated matrix production. We determined that Nmp4 has a broad impact on the transcriptome during osteogenic differentiation, contributing to the expression of over 5,000 genes. Phenotypic anchoring of transcriptional data was performed for the hypothesis-testing arm through analysis of cell metabolism, protein synthesis and secretion, and bone material properties. Mechanistic studies confirmed that Nmp4-/- MSPCs exhibited an enhanced capacity for glycolytic conversion- a key step in bone anabolism. Nmp4-/- cells showed elevated collagen translation and secretion. Expression of matrix genes that contribute to bone material-level mechanical properties were elevated in Nmp4-/- cells, an observation that was supported by biomechanical testing of bone samples from Nmp4-/- and WT mice. We conclude that loss of Nmp4 increases the magnitude of glycolysis upon the metabolic switch, which fuels the conversion of the osteoblast into a super-secretor of matrix resulting in more bone with improvements in intrinsic quality

    The spanish Blue Division in Y. Revista para la mujer (1941-1943)

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    Los cerca de 45.000 hombres que formaron parte de la DivisiĂłn Azul estuvieron acompañados por un grupo de enfermeras españolas en el frente del Este. Los soldados, ademĂĄs, recibĂ­an desde España las cartas de las madrinas de guerra y la ayuda de la SecciĂłn Femenina. Estas acciones fueron altamente publicitadas por la propaganda del RĂ©gimen a travĂ©s de las revistas para mujeres. El objetivo de este artĂ­culo es analizar cĂłmo les fue contada a las mujeres la experiencia de la DivisiĂłn Azul en Y. Revista para la mujer. Para ello, estudiamos los artĂ­culos sobre el tema en tres secciones especĂ­ficas: las mujeres que viajaron a la UniĂłn SoviĂ©tica, las que colaboraron desde casa y la imagen del voluntario como hĂ©roe masculino.The about 45.000 men that were part of the Spanish Blue Division were accompanied by a group of Spanish nurses in the Eastern Front. The soldiers, moreover, received from Spain the letters of the godmothers of war and the aid of Falange Women’s Section. These actions were highly publicized by the regime’s propaganda through the women’s magazines. The aim of this paper is to analyze how the experience of the Spanish Blue Division was told to women in Y. Revista para la mujer. For it, we study the articles about the theme in three specific sections: the women who travelled to the Soviet Union, those who collaborated from Spain and the image of the volunteer as a male hero

    Experimental evidence of frequency entrainment between coupled chaotic oscillations

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    The nonlinear response of a chaotic system to a chaotic variation in a system parameter is investigated experimentally. Clear experimental evidence of frequency entrainment of the chaotic oscillations is observed. We show that analogous to the frequency locking between coupled periodic oscillations, this effect is generic for coupled chaotic systems.Tang, D. Dykstra, R. ; Hamilton, M. ; Heckenberg, N
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