1,889 research outputs found

    SU(3) Lattice Gauge Theory With Adjoint Action At Nonzero Temperature

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    We study the thermal phase diagram of pure SU(3) gauge theory with fundamental and adjoint couplings. We improve previous estimates of the position of the bulk transition line and determine the thermal deconfinement transition lines for Nt=2,4,6,N_t=2,4,6, and 8. For Nt>4N_t > 4 the deconfinement transition line splits cleanly away from the bulk transition line. With increasing NtN_t the thermal deconfinement transition lines shift to increasingly weaker coupling, joining onto the bulk transition line at increasingly larger βa\beta_a in a pattern consistent with the usual universality picture of lattice gauge theories.Comment: Talk presented by U. M. Heller at Lat94 conference, September 27 - October 1, 1994, Bielefeld, Germany. self unwrapping postscript fil

    Der Liebesrentner

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    DER LIEBESRENTNER Der Liebesrentner / Heller, Leo (Public Domain) ( - ) Title page ( - ) Einleitung (5) Text (7) Der Ritter vom grünen Tisch ([187]) ColorChart ( -

    Hepatitis B and C in household and health services solid waste workers.

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    Human contact with solid waste poses biological, chemical, and physical health risks for workers involved in waste collection, transportation, and storage. The potential risk to human health resulting from contact with health services waste or household waste still sparks considerable controversy. The aim of this study was to identify the context of scientific discussions on risk/infection from the hepatitis B and C viruses in workers that collect solid waste from health services or households. The search covered publications up to 2013 in Brazilian and international databases, and 11 articles were selected through a literature review. Of these, six conclude that there is an increased risk of infection in workers that collect household waste when compared to those unexposed to waste, three point to greater risk for workers that collect health services waste as compared to those that collect ordinary waste, and the other two found no difference between exposed and unexposed individuals

    Assessment of work-related accidents associated with waste handling in Belo Horizonte (Brazil).

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    As more urban solid waste is generated, managing it becomes ever more challenging and the potential impacts on the environment and human health also become greater. Handling waste - including collection, treatment and final disposal - entails risks of work accidents. This article assesses the perception of waste management workers regarding work-related accidents in domestic and health service contexts in Belo Horizonte, Brazil. These perceptions are compared with national data from the Ministry of Social Security on accidents involving workers in solid waste management. A high proportion of accidents involves cuts and puncture injuries; 53.9% among workers exposed to domestic waste and 75% among those exposed to health service waste. Muscular lesions and fractures accounted for 25.7% and 12.5% of accidents, respectively. Data from the Ministry of Social Security diverge from the local survey results, presumably owing to under-reporting, which is frequent in this sector. Greater commitment is needed from managers and supervisory entities to ensure that effective measures are taken to protect workers' health and quality of life. Moreover, workers should defend their right to demand an accurate registry of accidents to complement monitoring performed by health professionals trained in risk identification. This would contribute to the improved recovery of injured workers and would require managers in waste management to prepare effective preventive action

    Thermal Phase Transition in Mixed Action SU(3) Lattice Gauge Theory and Wilson Fermion Thermodynamics

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    We study the thermal phase diagram of pure SU(3) lattice gauge theory with fundamental and adjoint couplings. We improve previous estimates of the position of the bulk transition line and determine the thermal deconfinement transition lines for Nt=2,4,6,N_t=2,4,6, and 8. The endpoint of the bulk transition line (βf,βa)=(4.00(7),2.06(8))(\beta_f, \beta_a)=(4.00(7), 2.06(8)) improves upon earlier estimates obtained using smaller lattice sizes. For Nt>4N_t > 4 the deconfinement transition line splits cleanly away from the bulk transition line. With increasing NtN_t the thermal deconfinement transition lines shift to increasingly weaker coupling, joining onto the bulk transition line at increasingly larger βa\beta_a in a pattern consistent with the usual universality picture of lattice gauge theories. We also discuss the possible consequences of an induced adjoint term from the fermionic determinant and determine this induced term numerically with a microcanonical demon method for two flavors of dynamical Wilson fermions.Comment: 21 pages. LaTeX file. 11 postscript figures added. Complete postscript file available via anonymous ftp at ftp://ftp.scri.fsu.edu/pub/heller/scri94-123.p

    Pennsylvania Folklife Vol. 13, No. 3

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    • Piece-Patch Artistry • The Horse and Buggy Dutch • Pine Tar and its Uses • Much Ado About Cookies • Folk Festival Program • Outdoor Privies in the Dutch Country • Distillation and Distilleries Among the Dutch • The Folklife Studies Movementhttps://digitalcommons.ursinus.edu/pafolklifemag/1015/thumbnail.jp

    Seroprevalence of hepatitis B and C among domestic and healthcare waste handlers in Belo Horizonte, Brazil.

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    Infection with the hepatitis B and C viruses may occur through contact with infected body fluids, including injury with infected sharps. Collectors of domestic or healthcare wastes are potentially exposed to these infections. The aim of this article is to investigate the risk factors associated with the prevalence of hepatitis B and C viruses (HBV and HCV) infection among domestic and healthcare waste workers in Belo Horizonte, Brazil. A cross-sectional study of hepatitis B and C infection was conducted from November 2014 to January 2015, through blood sample collection and interviews about socio-demographic factors with 61 workers exposed to healthcare waste ('exposed') and 461 exposed only to domestic wastes ('unexposed'). The prevalence of antibodies to HCV (Anti-HCV) antibodies was 3.3% in 'exposed' workers and 0.9% in 'unexposed', and of antibody to hepatitis B core antigen (Anti-HBc) was 9.8% and 5.6% in 'exposed' and 'unexposed' workers, respectively. Only 207 (44.9%) of those exposed to domestic waste and 45 (73.8%) of those handling healthcare waste were effectively immunised against hepatitis B virus (HBV). Exposures to domestic waste and to healthcare wastes were associated with similar risks of infection with HBV. The risk of hepatitis C virus (HCV) infection was marginally higher among healthcare waste workers compared with domestic waste workers, probably because of needlestick accidents owing to deficient sharps management systems. Immunisation against hepatitis B and screening tests to ensure the success of vaccination should be a condition for recruitment for both groups of waste workers

    Urban Waste Collectors in Belo Horizonte, Brazil: Their Perceptions of Occupational Health Risk.

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    Frequent contact with hazardous materials makes waste collection a potentially unhealthy activity. This article assesses the perception of waste management workers regarding work-related accidents in domestic and health service contexts in Brazil. Six focus groups were performed between June 2014 and August 2015. The aims of this study were to apprehend different aspects of the participants' health, workers' experiences of work-related accidents and perception of risks. Cuts and puncture injuries were reported most frequently in the line of work and were often considered as irrelevant. Immunization against hepatitis B was not common among all workers, which increases the risk of infection for those individuals. Finally, it is considered urgent to consolidate an inclusive space in which workers can have discussions on their health

    Is waste collection associated with hepatitis B infection? A meta-analysis.

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    This meta-analysis, which is based on a previously published systematic review, aims to contribute to the scientific discussion on hepatitis B virus (HBV) infection in workers who are exposed to domestic and healthcare wastes. Publications were sought which had been made available on the data used by December 2013 and updated to December 2016. The quality of the included studies was assessed according to the guidelines of Loney et al. for the critical appraisal of studies on the prevalence or incidence of a health problem. To verify the presence of heterogeneity between the papers, we used the Chi-squared test based on a Q statistic. A funnel plot was used to test for publication bias. All included studies had across-sectional study design. The association between exposure to waste and positive serology for the HBV surface antigen (HBsAg) showed a significant association [odds ratio (OR) 1.89, 95% confidence interval (CI) 1.27-2.86; p = 0.0019]. The prevalence rates of HBsAg and anti-HBc seropositivity was 0.04 (95% CI 0.03-0.05) and 0.21 (95% CI 0.14-0.28), respectively (p <0.0001). We found no evidence of publication bias. The results of this meta-analysis indicate a statistically significant association between exposure to solid waste, whether healthcare or domestic, and positive HBV infection markers. Therefore, the working conditions of waste collectors should be analyzed more closely. Immunization against HBV is recommended as the chief preventive measure for all solid waste workers

    As secas no Jequitinhonha: demandas, técnicas e custos do abastecimento no semiárido de Minas Gerais

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    This article analyzes droughts in the semi-arid region of the Jequitinhonha valley in Minas Gerais State, investigating the demand for water, the techniques used, public organizations dedicated to supply and their costs. Interviews with public agencies and farmers from four municipalities were used. The article concludes that the acute drought of 2012 to 2016 engaged several public agencies in the provision of water, which employed techniques of different costs and effectiveness; it notes that some technical and institutional innovations contribute to reducing clientelism that has historically prevailed in the droughts; even so, the biggest expenses are, still, with the emergency service, mediated by the local power.Este artigo analisa as secas no Semiárido do vale do Jequitinhonha, em Minas Gerais, investigando a demanda por água, as técnicas utilizadas, as organizações públicas dedicadas ao abastecimento e seus custos. Para isso, foram utilizadas entrevistas com agências públicas e agricultores de quatro municípios. Conclui-se no artigo que a seca aguda de 2012 a 2016 engajou várias agências públicas no provimento de água, com o emprego de técnicas de custos e eficácia diferentes; observou-se que várias inovações técnicas e institucionais ajudam a reduzir o clientelismo que vigora historicamente nas secas; mesmo assim, as maiores despesas continuam a ser com o atendimento emergencial mediado pelo poder local
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