1,263 research outputs found

    The Difference of Grammatical Error in Writing Recount Text Between Natural Science and Social Science Students

    Get PDF
    This study concerned on the difference of grammatical error in writing recount text between natural science and social science students. The objective of this study was to find out the difference of grammatical error in writing recount text between natural science and social science students. This research was conducted by using causal- comparative research. The subject of the study was the students of XI-IPA1 and XI- IPS1 of SMA Swasta Methodist Berastagi. The number of the samples was twenty eight. The techniques for data analysis were quantitative data. The t-result was 2,60 (bigger than t table 1,706). The conclusion is that there is a significant difference of grammatical error in writing recount text between natural science and social science students

    Observational Study Design in Veterinary Pathology, Part 1: Study Design

    Get PDF
    Observational studies are the basis for much of our knowledge of veterinary pathology and are highly relevant to the daily practice of pathology. However, recommendations for conducting pathology-based observational studies are not readily available. In part 1 of this series, we offer advice on planning and conducting an observational study with examples from the veterinary pathology literature. Investigators should recognize the importance of creativity, insight, and innovation in devising studies that solve problems and fill important gaps in knowledge. Studies should focus on specific and testable hypotheses, questions, or objectives. The methodology is developed to support these goals. We consider the merits and limitations of different types of analytic and descriptive studies, as well as of prospective vs retrospective enrollment. Investigators should define clear inclusion and exclusion criteria and select adequate numbers of study subjects, including careful selection of the most appropriate controls. Studies of causality must consider the temporal relationships between variables and the advantages of measuring incident cases rather than prevalent cases. Investigators must consider unique aspects of studies based on archived laboratory case material and take particular care to consider and mitigate the potential for selection bias and information bias. We close by discussing approaches to adding value and impact to observational studies. Part 2 of the series focuses on methodology and validation of methods

    Lynch Syndrome Associated with Two MLH1 Promoter Variants and Allelic Imbalance of MLH1 Expression

    Get PDF
    © 2015 The Authors. **Human Mutation published by Wiley Periodicals, Inc. Lynch syndrome is a hereditary cancer syndrome caused by a constitutional mutation in one of the mismatch repair genes. The implementation of predictive testing and targeted preventative surveillance is hindered by the frequent finding of sequence variants of uncertain significance in these genes. We aimed to determine the pathogenicity of previously reported variants (c.-28A > G and c.-7C > T) within the MLH1 5â²untranslated region (UTR) in two individuals from unrelated suspected Lynch syndrome families. We investigated whether these variants were associated with other pathogenic alterations using targeted high-throughput sequencing of the MLH1 locus. We also determined their relationship to gene expr ession and epigenetic alterations at the promoter. Sequencing revealed that the c.-28A > G and c.-7C > T variants were the only potentially pathogenic alterations within the MLH1 gene. In both individuals, the levels of transcription from the variant allele were reduced to 50% compared with the wild-type allele. Partial loss of expression occurred in the absence of constitutional epigenetic alterations within the MLH1 promoter. We propose that these variants may be pathogenic due to constitutional partial loss of MLH1 expression, and that this may be associated with intermediate penetrance of a Lynch syndrome phenotype. Our findings provide further evidence of the potential importance of noncoding variants in the MLH1 5â²UTR in the pathogenesis of Lynch syndrome.Link_to_subscribed_fulltex

    Pathogenic germline MCM9 variants are rare in Australian Lynch-like syndrome patients

    Get PDF
    Lynch syndrome is a hereditary cancer syndrome caused by the autosomal dominant inheritance of loss-of-function mutations in DNA mismatch repair (MMR) genes. Approximately one quarter of clinically suspected cases have no identifiable germline mutation in any MMR gene, a condition known as Lynch-like syndrome (LLS). MCM9 was recently identified as the DNA helicase in the mammalian MMR complex and loss of helicase activity results in microsatellite instability. We hypothesized that pathogenic variants in MCM9 may account for LLS. The 5′UTR and coding region of MCM9 were sequenced in germline DNA of 109 Australian patients with LLS and variants were cross-referenced with three population-based databases (dbSNP144, 1000 Genomes, ExAC). The functional effect of variants was assessed in silico with PolyPhen-2, SIFT and CONDEL. Fifteen variants that included six common SNPs and nine variants of unknown significance (VUS) were identified. We conclude that VUS occur in MCM9 in a small proportion of LLS patients and MCM9 mutations are unlikely to explain most LLS cases

    Safety of psychotropic medications in people with COVID-19: evidence review and practical recommendations

    Get PDF
    Background: The novel coronavirus pandemic calls for a rapid adaptation of conventional medical practices to meet the evolving needs of such vulnerable patients. People with coronavirus disease (COVID-19) may frequently require treatment with psychotropic medications, but are at the same time at higher risk for safety issues because of the complex underlying medical condition and the potential interaction with medical treatments. Methods: In order to produce evidence-based practical recommendations on the optimal management of psychotropic medications in people with COVID-19, an international, multi-disciplinary working group was established. The methodology of the WHO Rapid Advice Guidelines in the context of a public health emergency and the principles of the AGREE statement were followed. Available evidence informing on the risk of respiratory, cardiovascular, infective, hemostatic, and consciousness alterations related to the use of psychotropic medications, and drug-drug interactions between psychotropic and medical treatments used in people with COVID-19, was reviewed and discussed by the working group. Results: All classes of psychotropic medications showed potentially relevant safety risks for people with COVID-19. A set of practical recommendations was drawn in order to inform frontline clinicians on the assessment of the anticipated risk of psychotropic-related unfavorable events, and the possible actions to take in order to effectively manage this risk, such as when it is appropriate to avoid, withdraw, switch, or adjust the dose of the medication. Conclusions: The present evidence-based recommendations will improve the quality of psychiatric care in people with COVID-19, allowing an appropriate management of the medical condition without worsening the psychiatric condition and vice versa

    Challenges of mainstreaming green infrastructure in built environment professions

    Get PDF
    © 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. Green infrastructure (GI) has been identified as a promising approach to help cities adapt to climate change through the provision of multiple ecosystem services. However, GI contributions to urban resilience will not be realized until it is more fully mainstreamed in the built environment and design professions. Here, we interrogate five key challenges for the effective implementation of GI: (1) design standards; (2) regulatory pathways; (3) socio-economic considerations; (4) financeability; and (5) innovation. Methods include a literature review, case studies, and interviews with resilience managers. We propose a people-centred and context-dependent approach to advance effective implementation of GI in urban planning. We highlight two underlying currents that run across all of the challenges–(1) the role of political will as a pre-condition for tackling all challenges holistically; and (2) the role of stakeholder engagement in achieving public support, harnessing funding, and maintaining and monitoring GI in the long term. Highlights: • The effective implementation of GI is context-specific and should adhere to the basic principles of appropriate technology. • Continuous community engagement is needed to ensure the inclusivity and multi-functionality of GI. • Challenges to successful GI are intersectional and therefore cannot be addressed singly in isolation

    Brevi spunti sul d.lgs. n. 150/2009 e sulla sua applicabilità agli Enti locali

    Get PDF
    © 2014 Taylor & Francis Group, LLC. Gene silencing in cancer frequently involves hypermethylation and dense nucleosome occupancy across promoter regions. How a promoter transitions to this silent state is unclear. Using colorectal adenomas, we investigated nucleosome positioning, DNA methylation, and gene expression in the early stages of gene silencing. Genome-wide gene expression correlated with highly positioned nucleosomes upstream and downstream of a nucleosome-depleted transcription start site (TSS). Hypermethylated promoters displayed increased nucleosome occupancy, specifically at the TSS. We investigated 2 genes, CDH1 and CDKN2B, which were silenced in adenomas but lacked promoter hypermethylation. Instead, silencing correlated with loss of nucleosomes from the -2 position upstream of the TSS relative to normal mucosa. In contrast, permanent CDH1 silencing in carcinoma cells was characterized by promoter hypermethylation and dense nucleosome occupancy. Our findings suggest that silenced genes transition through an intermediary stage involving altered promoter nucleosome positioning, before permanent silencing by hypermethylation and dense nucleosome occupancy.Link_to_subscribed_fulltex

    Initiative, Personality and Leadership in Pairs of Foraging Fish

    Get PDF
    Studies of coordinated movement have found that, in many animal species, bolder individuals are more likely to initiate movement and shyer individuals to follow. Here, we show that in pairs of foraging stickleback fish, leadership is not merely a passive consequence of temperamental differences. Instead, the act of initiating a joint foraging trip out of cover itself brings about a change in the role that an individual plays throughout the subsequent trip, and success in recruiting a partner affects an individual's tendency to initiate the next trip. On each joint trip, whichever fish took the initiative in leading out of cover gains greater influence over its partner's behaviour, which persists even after several changes in position (i.e. termination attempts and re-joining). During any given trip, the initiator is less responsive to its partner's movements than during trips initiated by the partner. An individual's personality had an important effect on its response to failure to recruit a partner: while bold fish were unaffected by failures to initiate a joint trip, shy individuals were less likely to attempt another initiation after a failure. This difference provides a positive feedback mechanism that can partially stabilise social roles within the pair, but it is not strong enough to prevent occasional swaps, with individuals dynamically adjusting their responses to one another as they exchange roles
    corecore