155 research outputs found

    Effects of Generic Advertisement on Demand: The Case of the Washington State Apple Commission

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    The Washington Apple Commission (WAC) generically promoted apples for the Washington state industry from 1937 until 2003. This paper provides an analysis of the effects on demand attributable to these activities. Demand movement associated with promotion tends to be positive, though the results are mixed. Overall, WAC promotion increased growers’ total revenue by approximately 53.4millionfor2002.Theestimatedaveragereturntoadvertisingtopped53.4 million for 2002. The estimated average return to advertising topped 8.7 per dollar of advertising. Continuing selected promotional activities could increase revenue for growers if these activities could be carried out by voluntary, coordinated efforts.Demand and Price Analysis,

    Human Mesenchymal Stromal Cells Decrease Mortality Following Intestinal Ischemia and Reperfusion Injury

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    Background Cellular therapy is a novel treatment option for intestinal ischemia. Bone marrow–derived mesenchymal stromal cells (BMSCs) have previously been shown to abate the damage caused by intestinal ischemia/reperfusion (I/R) injury. We therefore hypothesized that (1) human BMSCs (hBMSCs) would produce more beneficial growth factors and lower levels of proinflammatory mediators compared to differentiated cells, (2) direct application of hBMSCs to ischemic intestine would decrease mortality after injury, and (3) decreased mortality would be associated with an altered intestinal and hepatic inflammatory response. Methods Adult hBMSCs and keratinocytes were cultured on polystyrene flasks. For in vitro experiments, cells were exposed to tumor necrosis factor, lipopolysaccharides, or 2% oxygen for 24 h. Supernatants were then analyzed for growth factors and chemokines by multiplex assay. For in vivo experiments, 8- to 12-wk-old male C57Bl6J mice were anesthetized and underwent a midline laparotomy. Experimental groups were exposed to temporary superior mesenteric artery occlusion for 60 min. Immediately after ischemia, 2 × 106 hBMSCs or keratinocytes in phosphate-buffered saline were placed into the peritoneal cavity. Animals were then closed and allowed to recover for 6 h (molecular/histologic analysis) or 7 d (survival analysis). After 6-h reperfusion, animals were euthanized. Intestines and livers were harvested and analyzed for inflammatory chemokines, growth factors, and histologic changes. Results hBMSCs expressed higher levels of human interleukin (IL) 6, IL-8, vascular endothelial growth factor (VEGF), and epidermal growth factor and lower levels of IL-1, IL-3, IL-7, and granulocyte-monocyte colony-stimulating factor after stimulation. In vivo, I/R resulted in significant mortality (70% mortality), whereas application of hBMSCs after ischemia decreased mortality to 10% in a dose-dependent fashion (P = 0.004). Keratinocyte therapy offered no improvements in mortality above I/R. Histologic profiles were equivalent between ischemic groups, regardless of the application of hBMSCs or keratinocytes. Cellular therapy yielded significantly decreased murine intestinal levels of soluble activin receptor-like kinase 1, betacellulin, and endothelin, whereas increasing levels of eotaxin, monokine induced by gamma interferon (MIG), monocyte chemoattractant protein 1, IL-6, granulocyte colony-stimulating factor (G-CSF), and interferon gamma-induced protein 10 (IP-10) from ischemia were appreciated. hBMSC therapy yielded significantly higher expression of murine intestinal VEGF and lower levels of intestinal MIG compared to keratinocyte therapy. Application of hBMSCs after ischemia yielded significantly lower murine levels of hepatic MIG, IP-10, and G-CSF compared to keratinocyte therapy. Conclusions Human BMSCs produce multiple beneficial growth factors. Direct application of hBMSCs to the peritoneal cavity after intestinal I/R decreased mortality by 60%. Improved outcomes with hBMSC therapy were not associated with improved histologic profiles in this model. hBMSC therapy was associated with higher VEGF in intestines and lower levels of proinflammtory MIG, IP-10, and G-CSF in liver tissue after ischemia, suggesting that reperfusion with hBMSC therapy may alter survival by modulating the systemic inflammatory response to ischemia

    From Dauprat to Berlioz: the origin of Berlioz's orchestral horn writing

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    Thesis (DM) Indiana University, Music, 201

    Organization specific predictors of job satisfaction: findings from a Canadian multi-site quality of work life cross-sectional survey

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    BACKGROUND: Organizational features can affect how staff view their quality of work life. Determining staff perceptions about quality of work life is an important consideration for employers interested in improving employee job satisfaction. The purpose of this study was to identify organization specific predictors of job satisfaction within a health care system that consisted of six independent health care organizations. METHODS: 5,486 full, part and causal time (non-physician) staff on active payroll within six organizations (2 community hospitals, 1 community hospital/long-term care facility, 1 long-term care facility, 1 tertiary care/community health centre, and 1 visiting nursing agency) located in five communities in Central West Ontario, Canada were asked to complete a 65-item quality of work life survey. The self-administered questionnaires collected staff perceptions of: co-worker and supervisor support; teamwork and communication; job demands and decision authority; organization characteristics; patient/resident care; compensation and benefits; staff training and development; and impressions of the organization. Socio-demographic data were also collected. RESULTS: Depending on the organization, between 15 and 30 (of the 40 potential predictor) variables were found to be statistically associated with job satisfaction (univariate analyses). Logistic regression analyses identified the best predictors of job satisfaction and these are presented for each of the six organizations and for all organizations combined. CONCLUSIONS: The findings indicate that job satisfaction is a multidimensional construct and although there appear to be some commonalities across organizations, some predictors of job satisfaction appear to be organization and context specific

    CG dinucleotide clustering is a species-specific property of the genome

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    Cytosines at cytosine-guanine (CG) dinucleotides are the near-exclusive target of DNA methyltransferases in mammalian genomes. Spontaneous deamination of methylcytosine to thymine makes methylated cytosines unusually susceptible to mutation and consequent depletion. The loci where CG dinucleotides remain relatively enriched, presumably due to their unmethylated status during the germ cell cycle, have been referred to as CpG islands. Currently, CpG islands are solely defined by base compositional criteria, allowing annotation of any sequenced genome. Using a novel bioinformatic approach, we show that CG clusters can be identified as an inherent property of genomic sequence without imposing a base compositional a priori assumption. We also show that the CG clusters co-localize in the human genome with hypomethylated loci and annotated transcription start sites to a greater extent than annotations produced by prior CpG island definitions. Moreover, this new approach allows CG clusters to be identified in a species-specific manner, revealing a degree of orthologous conservation that is not revealed by current base compositional approaches. Finally, our approach is able to identify methylating genomes (such as Takifugu rubripes) that lack CG clustering entirely, in which it is inappropriate to annotate CpG islands or CG clusters

    Teaching and Generative AI

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    With the rapid development of generative AI, teachers are experiencing a new pedagogical challenge, one that promises to forever change the way we approach teaching and learning. As a response to this unprecedented teaching context, this collection—Teaching and Generative AI: Pedagogical Possibilities and Productive Tensions—provides interdisciplinary teachers, librarians, and instructional designers with practical and thoughtful pedagogical resources for navigating the possibilities and challenges of teaching in an AI era. Because our goal with this edited collection is to present nuanced discussions of AI technologies across disciplines, the chapters collectively acknowledge or explore both possibilities and tensions—including the strengths, limitations, ethical considerations, and disciplinary potential and challenges—of teaching in an AI era. As such, the authors in this collection do not simply praise or criticize AI, but thoughtfully acknowledge and explore its complexities within educational settings

    Patterns of gut bacterial colonization in three primate species

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    Host fitness is impacted by trillions of bacteria in the gastrointestinal tract that facilitate development and are inextricably tied to life history. During development, microbial colonization primes the gut metabolism and physiology, thereby setting the stage for adult nutrition and health. However, the ecological rules governing microbial succession are poorly understood. In this study, we examined the relationship between host lineage, captive diet, and life stage and gut microbiota characteristics in three primate species (infraorder, Lemuriformes). Fecal samples were collected from captive lemur mothers and their infants, from birth to weaning. Microbial DNA was extracted and the v4 region of 16S rDNA was sequenced on the Illumina platform using protocols from the Earth Microbiome Project. Here, we show that colonization proceeds along different successional trajectories in developing infants from species with differing dietary regimes and ecological profiles: frugivorous (fruit-eating) Varecia variegata, generalist Lemur catta, and folivorous (leaf-eating) Propithecus coquereli. Our analyses reveal community membership and succession patterns consistent with previous studies of human infants, suggesting that lemurs may serve as a useful model of microbial ecology in the primate gut. Each lemur species exhibits distinct species-specific bacterial diversity signatures correlating to life stages and life history traits, implying that gut microbial community assembly primes developing infants at species-specific rates for their respective adult feeding strategies

    Beyond building: how social norms and networks shape mason construction practices in incremental homebuilding

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    How do low-income households and masons make house construction decisions? A three-country study examined social norms, networks, and information flows that influence construction practices in Kenya, India, and Peru. The study used a suite of qualitative research strategies, including desk research, site observation, focus group discussions, and key informant interviews, to examine households and informal construction service providers, and the interactions between them. The research sought to answer the following questions: 1) How do households and individuals make housing decisions? 2) What are the information flows, key influences, and social norms that steer these decisions? and 3) How can programmes leverage knowledge about norms to improve the quality of home construction? Findings covered areas of gender, disaster resilience, and construction labour – this article focuses on the latter. Ultimately the paper argues that designing impactful programmes for low-income housing markets requires understanding and incorporating these social norms, networks, and information flows.</jats:p

    Bamboo Specialists from Two Mammalian Orders (Primates, Carnivora) Share a High Number of Low-Abundance Gut Microbes

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    Bamboo specialization is one of the most extreme examples of convergent herbivory, yet it is unclear how this specific high-fiber diet might selectively shape the composition of the gut microbiome compared to host phylogeny. To address these questions, we used deep sequencing to investigate the nature and comparative impact of phylogenetic and dietary selection for specific gut microbial membership in three bamboo specialists — the bamboo lemur (Hapalemur griseus, Primates: Lemuridae), giant panda(Ailuropoda melanoleuca , Carnivora: Ursidae), and red panda (Ailurus fulgens, Carnivora: Musteloideadae), as well as two phylogenetic controls the ringtail lemur (Lemur catta ) and the Asian black bear (Ursus thibetanus ). We detected significantly higher Shannon diversity in the bamboo lemur (10.029) compared to both the giant panda (8.256; p= 0.0001936) and the red panda (6.484;p= 0.0000029). We also detected significantly enriched bacterial taxa that distinguished each species. Our results complement previous work in finding that phylogeny predominantly governs high-level microbiome community structure. However, we also find that 48 low-abundance OTUs are shared among bamboo specialists, compared to only 8 OTUs shared by the bamboo lemur and its sister species, the ringtail lemur (Lemur catta, a generalist). Our results suggest that deep sequencing is necessary to detect low-abundance bacterial OTUs, which may be specifically adapted to a high-fiber diet. These findings provide a more comprehensive framework for understanding the evolution and ecology of the microbiome as well as the host.This research was funded in by the National Science Foundation (grant no. 1455848) and the Wainwright fund

    Student-Led Fall Prevention Care Management Reduced Fall Risks at Assisted Living Facilities

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    Abstract Older adults in residential care settings are four times more likely than those not living in care facilities to experience falls. Yet, fall prevention efforts at long-term care settings are under-resourced, under-regulated, and under-studied. To address this gap, we developed and studied the impact of a specialty clinical, Fall Prevention Care Management (FPCM), for nursing students to decrease older adults’ fall risks. We enrolled assisted living residents that facility liaison identified as being high fall risk (fall rates or fall risk were not tracked at the study sites) and MOCA ≥15, in 2 assisted living facilities in Northwest USA. Participants received weekly, 1-hour, individual, semi-structured, Motivational Interviewing-based care management visits by same students over 6 visits. Changes in fall risks were measured by the CDC STEADI assessment (unsteadiness &amp; worry), Falls Self-Efficacy Scale International-Short (FESI-S), and Falls Behavioral Scale (FAB). Twenty-five residents completed the study. Students addressed the following (multiple responses possible): emotional needs (n=23), improved motivation to prevent falls (n=21), and individualized education/coaching (i.e., exercise, mobility aids) (n=10-17). FESI-S score improved from 16.0 to 14.4 (p=.001; decreased fear. FAB score improved from 2.94 to 3.10 (p=.05; more frequent fall prevention behaviors). Frequency of those who felt steady while standing or walking increased (24% to 40%, p=.07) and those who did not worry about falling increased (20% to 36%, p=.08). FPCM clinical offered valuable opportunity to address unmet care needs of older adults to reduce fall risks.</jats:p
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