5,302 research outputs found

    Heliospheric evolution of solar wind small‐scale magnetic flux ropes

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/94774/1/jgra19974.pd

    Hazard Analysis Critical Control Point (HACCP) Sebagai Model Kendali Dan Penjaminan Mutu Produksi Pangan

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    This research is basically based on the premise that food security especially in the field of pastry making into something very important. The purpose of this study are: 1) to analyze important stages in the processing of pastry to ensure the quality of pastry; 2) Evaluate how the supervision and quality control in the processing of pastry, and 3) evaluate the basic feasibility and level of implementation of HACCP Processing Unit pastry. This research use descriptive method. In collecting observations and interviews. The results give an idea as follows: 1) The stages in the processing Pastry has adopted 7 principles of HACCP; 2) Supervision and quality control in the manufacture of pastry is in compliance with the HACCP concept, 3) the basic feasibility and level of implementation of HACCP in the processing of consecutive Pastry as follows: good, good and excellent

    Venom system variation and the division of labor in the colonial hydrozoan Hydractinia symbiolongicarpus

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    Cnidarians (jellyfish, hydroids, sea anemones, and corals) possess a unique method for venom production, maintenance, and deployment through a decentralized system composed of different types of venom-filled stinging structures called nematocysts. In many species, nematocyst types are distributed heterogeneously across functionally distinct tissues. This has led to a prediction that different nematocyst types contain specific venom components. The colonial hydrozoan, Hydractinia symbiolongicarpus, is an ideal system to study the functional distribution of nematocyst types and their venoms, given that they display a division of labor through functionally distinct polyps within the colony. Here, we characterized the composition and distribution of nematocysts (cnidome) in the different polyp types and show that the feeding polyp (gastrozooid) has a distinct cnidome compared to the reproductive (gonozooid) and predatory polyp (dactylozooid). We generated a nematocyst-specific reporter line to track nematocyst development (nematogenesis) in H. symbiolongicarpus, and were able to confirm that nematogenesis primarily occurs in the mid-region of the gastrozooid and throughout stolons (tubes of epithelia that connect the polyps in the colony). This reporter line enabled us to isolate a nematocyst-specific lineage of cells for de novo transcriptome assembly, annotate venom-like genes (VLGs) and determine differential expression (DE) across polyp types. We show that a majority of VLGs are upregulated in gastrozooids, consistent with it being the primary site of active nematogenesis. However, despite gastrozooids producing more nematocysts, we found a number of VLGs significantly upregulated in dactylozooids, suggesting that these VLGs may be important for prey-capture. Our transgenic Hydractinia reporter line provides an opportunity to explore the complex interplay between venom composition, nematocyst diversity, and ecological partitioning in a colonial hydrozoan that displays a division of labor

    Localization of Multiple Jellyfish Toxins Shows Specificity for Functionally Distinct Polyps and Nematocyst Types in a Colonial Hydrozoan

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    Hydractinia symbiolongicarpus is a colonial hydrozoan that displays a division of labor through morphologically distinct and functionally specialized polyp types. As with all cnidarians, their venoms are housed in nematocysts, which are scattered across an individual. Here, we investigate the spatial distribution of a specific protein family, jellyfish toxins, in which multiple paralogs are differentially expressed across the functionally specialized polyps. Jellyfish toxins (JFTs) are known pore-forming toxins in the venoms of medically relevant species such as box jellyfish (class Cubozoa), but their role in other medusozoan venoms is less clear. Utilizing a publicly available single-cell dataset, we confirmed that four distinct H. symbiolongicarpus JFT paralogs are expressed in nematocyst-associated clusters, supporting these as true venom components in H. symbiolongicarpus. In situ hybridization and immunohistochemistry were used to localize the expression of these JFTs across the colony. These expression patterns, in conjunction with known nematocyst type distributions, suggest that two of these JFTs, HsymJFT1c-I and HsymJFT1c-II, are localized to specific types of nematocysts. We further interpret JFT expression patterns in the context of known regions of nematogenesis and differential rates of nematocyst turnover. Overall, we show that JFT expression patterns in H. symbiolongicarpus are consistent with the subfunctionalization of JFT paralogs across a partitioned venom system within the colony, such that each JFT is expressed within a specific set of functionally distinct polyp types and, in some cases, specific nematocyst types

    Dilemmas and solutions- experiences of a national Family Medicine applied knowledge licensing test during a pandemic

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    ABSTRACT: Background: The unprecedented COVID-19 pandemic brought significant challenges to all of medicine, including primary care training and examinations. The MRCGP AKT is high-stakes licensing 200-item MCQ for UK trainee family physicians and is part of an assessment tripos that, up to the onset of the pandemic, included a Clinical Skills Assessment using Simulated Patients and workplace based assessment. The AKT is blueprinted onto a curriculum content specification and computer delivered three times a year at test centres across the UK. It tests the knowledge base underpinning independent general practice within the context of the UK National Health Service. We report on the challenges and dilemmas faced during the pandemic, decisions taken, and lessons learned. Rapid exam changes needed to be made, and communicated effectively to candidates, whilst maintaining standards and fairness to candidates. Summary of Work: Challenges included lockdown travel restrictions, reduced capacity, social distancing and shielding candidates being unable to leave home. The April 2020 AKT was cancelled and prioritisation measures implemented to ensure candidates at the end of their training could enter the (stressed) workforce. We engaged with a wide range of stakeholders, carefully looked at remote testing, made contingency plans prioritised for those unable to sit exams and changed exam regulations to ensure fairness to candidates. In this emergency, we delivered a previously published exam which some candidates were unaware they had sat previously, and assessed how these candidates performed. We compared cohort performance before and during the pandemic. Summary of Results: We summarise why we did not remote test, how we obtained key worker status, and adapted contingency plans. Analysis of candidates who had previously sat the same exam showed they performed less well. Despite wide-ranging changes in training and workplace experience, there was no significant difference in cohort performance overall pre-and peri-pandemic. Discussion and Conclusions: COVID-19 constraints changed trainees clinical exposure, restricted training and supervisor support. However, exam preparedness did not appear adversely affected when measured by overall pass rates. Unexpectedly, candidates who sat an identical exam did not benefit from previous exposure. Take-home Messages: Involving stakeholders in key decisions and regular communications are essential. Test security and standards were not compromised

    Financing for Society: Assessing the Suitability of Crowdfunding for the Public Sector

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    In what follows, we offer the first systematic study to assess the suitability of investment-based crowdfunding for the public sector. Our research engaged six public sector case studies along with external partners to evaluate the economic, legal, political, and technical potential of crowdfunding as an additional form of finance for public sector infrastructure projects. The UK has a long tradition of using private sector finance to fund public sector infrastructure projects such as: bridges and tunnels, hospitals, housing, prisons, rail, roads, and schools. The NHS has a long tradition of using private finance and, as it is unable to borrow money in the same way as other public bodies, this trend appears set to remain. So, as the UK crowdfunding sector continues to grow and to mature, we wanted to use our research to: • help overcome existing knowledge barriers; • test whether or not crowdfunding could offer better value to the public sector; and to • assess if the internal capacity required to develop crowdfunding for the public sector could be minimised so that it mirrored that for the PWLB, or via PPP project finance, as common sources of public sector funding. To achieve this, it was vital that our research to assess the suitability of crowdfunding directly engaged and collaborated with public sector bodies in order to generate a robust evidence base of case studies for others to draw upon

    Can we use medical examiners' records for suicide surveillance and prevention research in Nova Scotia?

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    Introduction: Medical examiners' records can contribute to our understanding of the extent of suicide in a population, as well as associated sociodemographic and other factors

    Nonlinear Dynamics of the Perceived Pitch of Complex Sounds

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    We apply results from nonlinear dynamics to an old problem in acoustical physics: the mechanism of the perception of the pitch of sounds, especially the sounds known as complex tones that are important for music and speech intelligibility
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