134 research outputs found

    Diversity: A longitudinal study of how student diversity relates to resilience and successful progression in a new generation university

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    This project used the voices of diverse cohorts of students to describe their learning journeys as they progressed through the later years of their degree and into the workforce. The project combined quantitative data from a large student sample with qualitative data from a series of case study narratives to document the students’ perceptions about their learning experiences, the factors underpinning progression in their studies and their transition into the workplace. The project has attempted to answer the question: does diversity matter? Do students of different diversities progress differently, and are there differences in the factors enhancing progression and developing resilience that can be linked directly to diversity? In this project, successful students are those who have completed first year and have progressed to their second or final year of their undergraduate degree. The rationale for the study arose from: • the need for institutional policies and practices to better reflect the increased student diversity they serve • our lack of knowledge about how the behaviours and strategies that diverse students use translate into resilience and progression to graduation and into the workforce • the importance of understanding the diverse ways those successful students navigate through their learning journey, often in the face of multiple responsibilities and commitments..

    Influence of key polymer attributes, manufacturing conditions and sintering on abuse deterrence of physical barrier type abuse deterrent formulations (ADF)

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    When sintering us used to treat tablet formulations containing polyethylene oxide (PEO), the polymer particles are able to form stronger bonds thereby increase tablet tensile strength. This increase in strength can make it more difficult for an abuser to break, chew, or grind opioid tablets. A mechanistic study was implemented to understand the key sintering factors that influence tensile strength

    Learning from LMICs: best practices for leveraging sentinel surveillance systems to track the US COVID-19 pandemic

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    FRAMING How is the USA like a low-income and middle-income countries (LMICs)? With limited treatment options, no vaccine and a chronically underfunded public health infrastructure, the USA is confronting the COVID-19 pandemic hampered by adversities typically faced by LMICs. In particular, obtaining reliable and timely surveillance data to inform public health policy has been impeded by persistent shortages of testing supplies and inequitable access to testing. SARS-CoV-2 testing in March and April 2020 likely identified only 2%–17% of US infections.

    Influence of the Physicomechanical Properties of Starches on Their Tabletability—A Multivariate Analysis

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    Purpose The goal of this study was to identify correlations between the physicomechanical properties of different grades of starches with their tabletability. Methods Corn-starch grades (PURE-DENT® B700, PURE-DENT® B810, and PURE-DENT® B830) and pregelatinized corn-starch grades (SPRESS® B818, SPRESS® B820, and SPRESS® B825) were studied for physicomechanical properties, dynamic sorption isotherm, moisture content [MC] (% w/w), dehydration enthalpy (J/g) [ΔHd], and percent crystallinity (%). Tablets (6 mm) were compressed from hand-weighed powders (constant true volume) using Gamlen Tablet Press (Compression pressure-100 MPa; Compression speed- 5mm/s, 50 mm/s). Tablet mechanical strength (TMS) and Heckel parameters were evaluated. Correlation between physicomechanical properties and compression descriptors was evaluated by multivariate method. Results All starches followed Type-III sorption isotherm with open hysteresis loop indicating their large amorphous content. High amorphous content was further confirmed with hollow diffraction peaks of starches in the powder X-ray diffraction studies. Glass transition temperature of all starches was about 101°C. The moisture content and percent crystallinity of all starches was found statistically insignificant. However, PURE-DENT® B830 and SPRESS® B818 showed significantly low ΔHd values. Principle component analysis (PCA) loadings plot calculated with measured physicomechanical properties and TMS showed positive correlation between high Heckel Yield pressure values of plastic and elastic deformation and negative correlation with percent crystallinity, ΔHd, and MC along PC1. These relationships confirmed expected phenomenon in PCA score plots that Starches (PURE-DENT® B830 and SPRESS® B818) with plastic deformation followed by low elastic recovery in the decompression phase shows better tabletability. Furthermore, positive correlation of low ΔHd with TMS might indicate that starches with easy availability of associated water (low ΔHd) might have better tabletability due to water induced material plasticization. Conclusion Out of the six different grades of starches studied PURE-DENT® B830 and SPRESS® B818 showed better tabletability regardless of similar MC and amorphous nature. The better tabletability of these two starches might be attributed to their better plasticization due to loosely bound associated water, and low elastic recovery in the decompression phase

    Clinical practice guidelines on the evidenceâ based use of integrative therapies during and after breast cancer treatment

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    Answer questions and earn CME/CNEPatients with breast cancer commonly use complementary and integrative therapies as supportive care during cancer treatment and to manage treatmentâ related side effects. However, evidence supporting the use of such therapies in the oncology setting is limited. This report provides updated clinical practice guidelines from the Society for Integrative Oncology on the use of integrative therapies for specific clinical indications during and after breast cancer treatment, including anxiety/stress, depression/mood disorders, fatigue, quality of life/physical functioning, chemotherapyâ induced nausea and vomiting, lymphedema, chemotherapyâ induced peripheral neuropathy, pain, and sleep disturbance. Clinical practice guidelines are based on a systematic literature review from 1990 through 2015. Music therapy, meditation, stress management, and yoga are recommended for anxiety/stress reduction. Meditation, relaxation, yoga, massage, and music therapy are recommended for depression/mood disorders. Meditation and yoga are recommended to improve quality of life. Acupressure and acupuncture are recommended for reducing chemotherapyâ induced nausea and vomiting. Acetylâ Lâ carnitine is not recommended to prevent chemotherapyâ induced peripheral neuropathy due to a possibility of harm. No strong evidence supports the use of ingested dietary supplements to manage breast cancer treatmentâ related side effects. In summary, there is a growing body of evidence supporting the use of integrative therapies, especially mindâ body therapies, as effective supportive care strategies during breast cancer treatment. Many integrative practices, however, remain understudied, with insufficient evidence to be definitively recommended or avoided. CA Cancer J Clin 2017;67:194â 232. © 2017 American Cancer Society.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/136746/1/caac21397_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/136746/2/caac21397.pd

    Feasibility of trial procedures for a randomised controlled trial of a community based group exercise intervention for falls prevention for visually impaired older people: the VIOLET study

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    Background Visually impaired older people (VIOP) have a higher risk of falling than their sighted peers, and are likely to avoid physical activity. The aim was to adapt the existing Falls Management Exercise (FaME) programme for VIOP, delivered in the community, and to investigate the feasibility of conducting a definitive randomised controlled trial (RCT) of this adapted intervention. Methods Two-centre randomised mixed methods pilot trial and economic evaluation of the adapted group-based FaME programme for VIOP versus usual care. A one hour exercise programme ran weekly over 12 weeks at the study sites (Newcastle and Glasgow), delivered by third sector (voluntary and community) organisations. Participants were advised to exercise at home for an additional two hours over the week. Those randomised to the usual activities group received no intervention. Outcome measures were completed at baseline, 12 and 24 weeks. The potential primary outcome was the Short Form Falls Efficacy Scale – International (SFES-I). Participants’ adherence was assessed by reviewing attendance records and self-reported compliance to the home exercises. Adherence with the course content (fidelity) by instructors was assessed by a researcher. Adverse events were collected in a weekly phone call. Results Eighteen participants, drawn from community-living VIOP were screened; 68 met the inclusion criteria; 64 participants were randomised with 33 allocated to the intervention and 31 to the usual activities arm. 94% of participants provided data at the 12 week visit and 92% at 24 weeks. Adherence was high. The intervention was found to be safe with 76% attending nine or more classes. Median time for home exercise was 50 min per week. There was little or no evidence that fear of falling, balance and falls risk, physical activity, emotional, attitudinal or quality of life outcomes differed between trial arms at follow-up. Conclusions The intervention, FaME, was implemented successfully for VIOP and all progression criteria for a main trial were met. The lack of difference between groups on fear of falling was unsurprising given it was a pilot study but there may have been other contributory factors including suboptimal exercise dose and apparent low risk of falls in participants. These issues need addressing for a future trial

    Protein profiling of the dimorphic, pathogenic fungus, Penicillium marneffei

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    <p>Abstract</p> <p>Background</p> <p><it>Penicillium marneffei </it>is a pathogenic fungus that afflicts immunocompromised individuals having lived or traveled in Southeast Asia. This species is unique in that it is the only dimorphic member of the genus. Dimorphism results from a process, termed phase transition, which is regulated by temperature of incubation. At room temperature, the fungus grows filamentously (mould phase), but at body temperature (37°C), a uninucleate yeast form develops that reproduces by fission. Formation of the yeast phase appears to be a requisite for pathogenicity. To date, no genes have been identified in <it>P. marneffei </it>that strictly induce mould-to-yeast phase conversion. In an effort to help identify potential gene products associated with morphogenesis, protein profiles were generated from the yeast and mould phases of <it>P. marneffei</it>.</p> <p>Results</p> <p>Whole cell proteins from the early stages of mould and yeast development in <it>P. marneffei </it>were resolved by two-dimensional gel electrophoresis. Selected proteins were recovered and sequenced by capillary-liquid chromatography-nanospray tandem mass spectrometry. Putative identifications were derived by searching available databases for homologous fungal sequences. Proteins found common to both mould and yeast phases included the signal transduction proteins cyclophilin and a RACK1-like ortholog, as well as those related to general metabolism, energy production, and protection from oxygen radicals. Many of the mould-specific proteins identified possessed similar functions. By comparison, proteins exhibiting increased expression during development of the parasitic yeast phase comprised those involved in heat-shock responses, general metabolism, and cell-wall biosynthesis, as well as a small GTPase that regulates nuclear membrane transport and mitotic processes in fungi. The cognate gene encoding the latter protein, designated <it>RanA</it>, was subsequently cloned and characterized. The <it>P. marneffei </it>RanA protein sequence, which contained the signature motif of Ran-GTPases, exhibited 90% homology to homologous <it>Aspergillus </it>proteins.</p> <p>Conclusion</p> <p>This study clearly demonstrates the utility of proteomic approaches to studying dimorphism in <it>P. marneffei</it>. Moreover, this strategy complements and extends current genetic methodologies directed towards understanding the molecular mechanisms of phase transition. Finally, the documented increased levels of RanA expression suggest that cellular development in this fungus involves additional signaling mechanisms than have been previously described in <it>P. marneffei</it>.</p

    T-Lymphocytes Enable Osteoblast Maturation via IL-17F during the Early Phase of Fracture Repair

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    While it is well known that the presence of lymphocytes and cytokines are important for fracture healing, the exact role of the various cytokines expressed by cells of the immune system on osteoblast biology remains unclear. To study the role of inflammatory cytokines in fracture repair, we studied tibial bone healing in wild-type and Rag1−/− mice. Histological analysis, µCT stereology, biomechanical testing, calcein staining and quantitative RNA gene expression studies were performed on healing tibial fractures. These data provide support for Rag1−/− mice as a model of impaired fracture healing compared to wild-type. Moreover, the pro-inflammatory cytokine, IL-17F, was found to be a key mediator in the cellular response of the immune system in osteogenesis. In vitro studies showed that IL-17F alone stimulated osteoblast maturation. We propose a model in which the Th17 subset of T-lymphocytes produces IL-17F to stimulate bone healing. This is a pivotal link in advancing our current understanding of the molecular and cellular basis of fracture healing, which in turn may aid in optimizing fracture management and in the treatment of impaired bone healing
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