21 research outputs found

    Nonlinear Inequalities and Entropy-Concurrence Plane

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    Nonlinear inequalities based on the quadratic Renyi entropy for mixed two-qubit states are characterized on the Entropy-Concurrence plane. This class of inequalities is stronger than Clauser-Horne-Shimony-Holt (CHSH) inequalities and, in particular, are violated "in toto" by the set of Type I Maximally-Entangled-Mixture States (MEMS I)

    Autoantibodies against type I IFNs in patients with life-threatening COVID-19

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    Interindividual clinical variability in the course of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is vast. We report that at least 101 of 987 patients with life-threatening coronavirus disease 2019 (COVID-19) pneumonia had neutralizing immunoglobulin G (IgG) autoantibodies (auto-Abs) against interferon-w (IFN-w) (13 patients), against the 13 types of IFN-a (36), or against both (52) at the onset of critical disease; a few also had auto-Abs against the other three type I IFNs. The auto-Abs neutralize the ability of the corresponding type I IFNs to block SARS-CoV-2 infection in vitro. These auto-Abs were not found in 663 individuals with asymptomatic or mild SARS-CoV-2 infection and were present in only 4 of 1227 healthy individuals. Patients with auto-Abs were aged 25 to 87 years and 95 of the 101 were men. A B cell autoimmune phenocopy of inborn errors of type I IFN immunity accounts for life-threatening COVID-19 pneumonia in at least 2.6% of women and 12.5% of men

    Benefits and limitations of project-to-project job rotation in software organizations: A synthesis of evidence

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    Context Job rotation has been proposed as a managerial practice to be applied in the organizational environment to reduce job monotony, boredom, and exhaustion resulting from job simplification, specialization, and repetition. The scientific literature distinguishes between job-to-job and project-to-project rotations. Despite the potential benefits and its actual use on behalf of software companies, we do not have an accumulated body of scientific knowledge about benefits and limitations of job rotation in software engineering practice. In particular, we have no concrete empirical evidence about the use of project-to-project rotations in practice. Goal We aim to identify and discuss evidence about project-to-project (P2P) job rotation, in order to understand the potential benefits and limitations of this practice in software organizations. Method We deployed a mix-method research strategy to collect and analyze empirical evidence from the scientific literature, performing a systematic literature review, on one hand and from industrial practice, performing qualitative case studies on the other. We synthesized the evidence using techniques from meta-ethnography. Results We found eight benefits, nine limitations, and two factors classified as both benefits and limitations of P2P rotations in software engineering. Different research methods yielded confirmatory and complementary evidence, emphasizing the importance of conducting mix-method research. We found no contradictory evidence and five factors were identified in more than one study using different research methods, contributing to the strength of the evidence. Conclusion We synthesized evidence from multiple sources and used different research methods concerning the benefits and limitations of P2P rotation in software engineering practice. Our findings show that rotation tends to benefit important job outcomes, such as motivation, and to decrease job monotony. The main limitations were associated with the potential increase in intra-group social conflicts, individual cognitive effort, and workload, and a temporary decrease in productivity

    Braces for idiopathic scoliosis in adolescents. (version 2)

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    BACKGROUND: Adolescent Idiopathic Scoliosis (AIS) is a three-dimensional deformity of the spine. While AIS can progress during growth and cause a surface deformity, it is usually not symptomatic. However, in adulthood, if the final spinal curvature surpasses a certain critical threshold, the risk of health problems and curve progression is increased. Braces are traditionally recommended to stop curvature progression in some countries and criticized in others. They generally need to be worn full time, with treatment extending over years. OBJECTIVES: To evaluate the efficacy of bracing in adolescent patients with AIS. SEARCH STRATEGY: The following databases (up to July 2008) were searched with no language limitations: the Cochrane Central Register of Controlled Trials, MEDLINE (from January 1966), EMBASE (from January 1980), CINHAL (from January 1982) and reference lists of articles. An extensive handsearch of the grey literature was also conducted. SELECTION CRITERIA: Randomised controlled trials and prospective cohort studies comparing braces with no treatment, other treatment, surgery, and different types of braces. DATA COLLECTION AND ANALYSIS: Two review authors independently assessed trial quality and extracted data. MAIN RESULTS: We included two studies. There was very low quality evidence from one prospective cohort study with 286 girls that a brace curbed curve progression at the end of growth (success rate 74 (95 CI: 52 to 84)), better than observation (success rate 34 (95 CI:16 to 49)) and electrical stimulation (success rate 33 (95 CI:12 to 60)). There is low quality evidence from one RCT with 43 girls that a rigid brace is more successful than an elastic one (SpineCor) at curbing curve progression when measured in Cobb degrees, but there were no significant differences between the two groups in the subjective perception of daily difficulties associated with wearing the brace. AUTHORS' CONCLUSIONS: There is very low quality evidence in favour of using braces, making generalization very difficult. Further research could change the actual results and our confidence in them; in the meantime, patients' choices should be informed by multidisciplinary discussion. Future research should focus on short and long-term patient-centred outcomes, in addition to measures such as Cobb angles. RCTs and prospective cohort studies should follow both the Scoliosis Resarch Society (SRS) and Society on Scoliosis Orthopaedic and Rehabilitation Treatment (SOSORT) criteria for bracing studies

    The role of p16 as putative biomarker for cervical neoplasia: A controversial issue?

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    Submitted by Sandra Infurna ([email protected]) on 2018-03-01T16:15:43Z No. of bitstreams: 1 alcinaf_nicol_etal_IOC_2017.pdf: 282043 bytes, checksum: a766894a85bdf3650c4e0d6878e5ecff (MD5)Approved for entry into archive by Sandra Infurna ([email protected]) on 2018-03-01T16:30:15Z (GMT) No. of bitstreams: 1 alcinaf_nicol_etal_IOC_2017.pdf: 282043 bytes, checksum: a766894a85bdf3650c4e0d6878e5ecff (MD5)Made available in DSpace on 2018-03-01T16:30:15Z (GMT). No. of bitstreams: 1 alcinaf_nicol_etal_IOC_2017.pdf: 282043 bytes, checksum: a766894a85bdf3650c4e0d6878e5ecff (MD5) Previous issue date: 2017Instituto Brasileiro de Medicina e Reabilitação. Rio de Janeiro, RJ, BrasilFundação Oswaldo Cruz. Instituto Nacional da Saúde da Mulher, Criança e Adolescente Fernandes Figueira. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Nacional da Saúde da Mulher, Criança e Adolescente Fernandes Figueira. Rio de Janeiro, RJ, Brasil.State University Comprehensive Cancer Center. Columbus, OH, USA.Instituto Nacional de Câncer. Divisão de Genética. Rio de Janeiro, RJ, BrasilFundação Oswaldo Cruz. Instituto Nacional de Infectologia Evandro Chagas. Rio de Janeiro, RJ. Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório Interdisciplinar de Pesquisas Médicas. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Nacional de Infectologia Evandro Chagas. Rio de Janeiro, RJ. Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório Interdisciplinar de Pesquisas Médicas. Rio de Janeiro, RJ, Brasil.INTRODUCTION: Protein p16 has been extensively studied as a potential biomarker for precursor lesions to distinguish cervical Intraepithelial neoplasia (CIN) from their mimics. However, the use of p16 as prognostic biomarker for diagnosis of cervical cancer and precancer is controversial. This study focuses on the assessment of peer-reviewed scientific data related to the use of p16 to predict disease severity and its controversies. METHODS: We reviewed publications in MEDLINE/PubMed assessing the clinical, diagnostic and prognostic significance of p16 in CIN and cervical cancer; we included publications from 2009 to June 2017. RESULTS: The use of p16 as a prognostic marker is still unreliable, although it could be a useful tool for diagnosis of Cervical Intraepithelial Neoplasia lesions with undetermined morphology. Moreover, p16 appears to be a specific marker of high-risk oncogenic HPV infection. CONCLUSION: This review shows the potential utility and drawbacks of p16 for clinical practice and the diagnosis of cervical cancer. Further studies are required to substantiate the role of p16 in conjunction with other more sensitive and specific biomarkers for diagnosing CIN and predicting its progression

    Untapped Potential : Opportunities and Challenges for Sustainable Bioenergy Production from Marginal Lands in the Northeast USA

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    Over two million hectares of marginal land in the Northeast USA no longer used for agriculture may be suitable and available for production of second-generation cellulosic bioenergy crops, offering the potential for increased regional bioenergy production without competing with food production on prime farmland. Current yields of perennial bioenergy grasses and short-rotation woody crops range from 2.3 to 17.4 and 4.5 to 15.5 Mg/ha, respectively, and there is great potential for increased yields. Regional advantages for bioenergy development include abundant water resources, close proximity between production and markets, and compatibility of bioenergy cropping systems with existing agriculture. As New York and New England (a subset of the Northeast region) account for ~85 % of the nation’s heating oil consumption, production of bioheat, biopower, and combined heat and power could substantially reduce the region’s dependence on imported petroleum. While numerous grassroots efforts are underway in the region across supply chains, bioenergy development faces several challenges and unknowns in terms of environmental impact, production, yields, socioeconomics, and policy. We explore the opportunities for second-generation bioenergy production on the unused marginal lands of the Northeast USA and discuss the challenges to be addressed to promote sustainable bioenergy production on the region’s underutilized marginal land base
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