54 research outputs found

    Adults and Children in Low-Income Households That Participate in Cost-Offset Community Supported Agriculture Have High Fruit and Vegetable Consumption

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    This paper examines fruit and vegetable intake (FVI) in low-income households that participated in a cost-offset (CO), or 50% subsidized, community-supported agriculture (CSA) program. CSA customers paid farms upfront for a share of the harvest, and received produce weekly throughout the growing season. A cohort of adults and children 2–12 y in a summer CO-CSA were surveyed online twice: August 2015 (n = 41) and February 2016 (n = 23). FVI was measured by the National Cancer Institute’s (NCI) Fruit and Vegetable Screener (FVS) and an inventory of locally grown fruits and vegetables. FVI relative to United States (US) recommendations and averages, and across seasons, were tested with non-parametric tests and paired t-tests (p < 0.05). Both adults and children in the CO-CSA had higher FVI than the US averages, and more often met recommendations for vegetables. Some summer fruits and vegetables were more often eaten when locally in-season. The CO-CSA model warrants further examination as an avenue for improving vegetable consumption among adults and children in low-income households. However, causality between CO-CSA participation and FVI cannot be inferred, as CO-CSA participants may be positive deviants with respect to FVI. A multi-state randomized controlled trial is currently underway to evaluate impacts of CO-CSAs on FVI and related outcomes

    Lentiviral Vectors and Protocols for Creation of Stable hESC Lines for Fluorescent Tracking and Drug Resistance Selection of Cardiomyocytes

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    Developmental, physiological and tissue engineering studies critical to the development of successful myocardial regeneration therapies require new ways to effectively visualize and isolate large numbers of fluorescently labeled, functional cardiomyocytes.Here we describe methods for the clonal expansion of engineered hESCs and make available a suite of lentiviral vectors for that combine Blasticidin, Neomycin and Puromycin resistance based drug selection of pure populations of stem cells and cardiomyocytes with ubiquitous or lineage-specific promoters that direct expression of fluorescent proteins to visualize and track cardiomyocytes and their progenitors. The phospho-glycerate kinase (PGK) promoter was used to ubiquitously direct expression of histone-2B fused eGFP and mCherry proteins to the nucleus to monitor DNA content and enable tracking of cell migration and lineage. Vectors with T/Brachyury and alpha-myosin heavy chain (alphaMHC) promoters targeted fluorescent or drug-resistance proteins to early mesoderm and cardiomyocytes. The drug selection protocol yielded 96% pure cardiomyocytes that could be cultured for over 4 months. Puromycin-selected cardiomyocytes exhibited a gene expression profile similar to that of adult human cardiomyocytes and generated force and action potentials consistent with normal fetal cardiomyocytes, documenting these parameters in hESC-derived cardiomyocytes and validating that the selected cells retained normal differentiation and function.The protocols, vectors and gene expression data comprise tools to enhance cardiomyocyte production for large-scale applications

    Use of SMS texts for facilitating access to online alcohol interventions: a feasibility study

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    A41 Use of SMS texts for facilitating access to online alcohol interventions: a feasibility study In: Addiction Science & Clinical Practice 2017, 12(Suppl 1): A4

    Mechanisms of Granulin Deficiency: Lessons from Cellular and Animal Models

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    Framing mobile learning: Investigating the framework for the rationale analysis of mobile education

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    The purpose of this chapter is to introduce faculty and instructors, and those interested in using mobile technologies to support teaching and learning, to the Framework for the Rationale Analysis of Mobile Education (FRAME; Koole, 2009). This chapter discusses how mobile or handheld devices can be used to promote inquiry-based learning and constructivist and authentic pedagogies. Additionally, the chapter discusses Koole\u27s (2009) FRAME model as a scaffold for guiding the development of learning materials, and the design of teaching and learning strategies for mobile education (p. 25). Lastly, the FRAME model is used to guide the implementation of an inquiry-based instructional unit incorporating mobile or handheld devices

    Strategies and principles to develop cognitive presence in online discussions

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    The chapter is designed to provide online instructors with strategies and techniques for fostering greater cognitive presence in asynchronous online discussion forums. Online discussions, moderated and facilitated by instructors and students, are a staple in online learning environments and provide powerful mechanisms for engaging students in dialogue. However, oftentimes dialogues stall out at the initial inquiry stage, and deeper, critical thinking is neglected. Realizing the foundational nature of discussion forum activities, the authors present ways in which instructors can nurture cognitive presence and foster deeper lines of thinking in online discussions. The chapter outlines the four stages of cognitive presence while offering strategies and question prompts to engender cognitive presence in online discussions. A quick reference guide is included as a discussion aid, suggesting ways to recognize the stages of cognitive presence as well as providing question prompts for engendering greater cognitive presence and critical thinking. © 2013, IGI Global

    Ligand Dynamics in the Binuclear Site in Cytochrome Oxidase

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    The dioxygen-reduction mechanism in cytochrome oxidase relies on proton control of the electron-transfer events that drive the process. Recent work on proton delivery and efflux channels in the protein that are relevant to substrate reduction and proton pumping is considered, and the current status of this area is summarized. Carbon monoxide photo dissociation and the ligand dynamics that occur subsequent to photolysis have been valuable tools in probing possible coupling schemes for linking exergonic electron-transfer chemistry to endergonic proton translocation. Our picosecond-time-resolved Raman results show that the heme a3- proximal histidine bond remains intact following CO photo dissociation but that the local environment around the heme a3 center in the photoproduct is in a nonequilibrium state. This photoproduct relaxes to its equilibrium configuration on the same time scale as ligand release occurs from CUB' which suggests a coupling between the two events and a potential signaling pathway between the site of O2 binding and reduction and the putative element, CUB' that links the redox chemistry to the proton pump
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