Trabalhadores Usuários De Drogas Em Recuperação Em Uma Região Industrial Do Brasil

Context: The number of illicit drug users worldwide is estimated at 210 million people annually, of which at least 200,000 die as a result. Drug abuse affects not only the user but also their family, friends, coworkers, and community. Objective: This study outlines a sociodemographic profle of workers undergoing treatment for chemical dependency recovery in Campinas (SP). Method: Cross-sectional, exploratory study with data collected in rehabilitation centers for chemical dependency treatment in Campinas by means of a self-administered and anonymous questionnaire. The research was conducted between July 2011 and July 2012 and focused on the analysis of health and work conditions. The study included workers who were followed for more than 30 days (n=200). Results: 87.8% of the population were aged 18-54 years. Most of them had completed high school, had an income of some kind, and of which 54.5% were formally employed. 48.4% hadcontract positions of less than one year and 42.1% had a salary range below R$1,020.00 (Brazilian real). Conclusion: This study provides information not explored in other studies and has a potential value related to the prevention, treatment, and rehabilitation of workers in similar conditions.142788

Effects of the Energy Error Distribution of Fluorescence Telescopes on the UHECR energy spectrum

The measurement of the ultra high energy cosmic ray (UHECR) spectrum is strongly affected by uncertainties on the reconstructed energy. The determination of the presence or absence of the GZK cutoff and its position in the energy spectrum depends not only on high statistics but also on the shape of the energy error distribution. Here we determine the energy error distribution for fluorescence telescopes, based on a Monte Carlo simulation. The HiRes and Auger fluorescence telescopes are simulated in detail. We analyze the UHECR spectrum convolved with this energy error distribution. We compare this spectrum with one convolved with a lognormal error distribution as well as with a Gaussian error distribution. We show that the energy error distribution for fluorescence detectors can not be represented by these known distributions. We conclude that the convolved energy spectrum will be smeared but not enough to affect the GZK cutoff detection. This conclusion stands for both HiRes and Auger fluorescence telescopes. This result differs from the effect of the energy error distribution obtained with ground detectors and reinforces the importance of the fluorescence energy measurement. We also investigate the effect of possible fluorescence yield measurement errors in the energy spectrum.Comment: 24 pages, 11 figure

Localization Of Metastasis Within The Sentinel Lymph Node Biopsies: A Predictor Of Additional Axillary Spread Of Breast Cancer? [localização Da Metástase No Interior Dos Linfonodos Sentinelas: Um Preditor De Disseminação Adicional Axilar Em Câncer De Mama?]

Purpose: To explore the relationship between morphological characteristics and histologic localization of metastasis within sentinel lymph nodes (SLN) and axillary spread in women with breast cancer. Methods: We selected 119 patients with positive SLN submitted to complete axillary lymph node dissection from July 2002 to March 2007. We retrieved the age of patients and the primary tumor size. In the primary tumor, we evaluated histologic and nuclear grade, and peritumoral vascular invasion (PVI). In SLNs we evaluated the size of metastasis, their localization in the lymph node, number of foci, number of involved lymph nodes, and extranodal extension. Results: Fifty-one (42.8%) patients had confirmed additional metastasis in non-sentinel lymph nodes (NLSN). High histologic grade, PVI, intraparenchymatous metastasis, extranodal neoplastic extension and size of metastasis were associated with positive NLSN. SLN metastasis affecting the capsule were associated to low risk incidence of additional metastasis. After multivariate analysis, PVI and metastasis size in the SLN remained as the most important risk factors for additional metastasis. Conclusions: The risk of additional involvement of NSLN is higher in patients with PVI and it increases progressively according the histologic localization in the lymph node, from capsule, where the afferent lymphatic channel arrives, to the opposite side of capsule promoting the extranodal extension. 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Probing neutrino properties with charged scalar lepton decays

Supersymmetry with bilinear R-parity violation provides a predictive framework for neutrino masses and mixings in agreement with current neutrino oscillation data. The model leads to striking signals at future colliders through the R-parity violating decays of the lightest supersymmetric particle. Here we study charged scalar lepton decays and demonstrate that if the scalar tau is the LSP (i) it will decay within the detector, despite the smallness of the neutrino masses, (ii) the relative ratio of branching ratios Br({tilde tau}_1 --> e sum nu_i)/ Br({tilde tau}_1 --> mu sum nu_i) is predicted from the measured solar neutrino angle, and (iii) scalar muon and scalar electron decays will allow to test the consistency of the model. Thus, bilinear R-parity breaking SUSY will be testable at future colliders also in the case where the LSP is not the neutralino.Comment: 24 pages, 8 ps figs Report-no.: IFIC/02-33 and ZU-TH 11/0