Navegando por Palavras-chave "Statistical analysis"
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- ItemAcesso aberto (Open Access)Assessment of Renewable Energy Resources with Remote Sensing(MDPI, 2021) Martins, Fernando Ramos [UNIFESP]; http://lattes.cnpq.br/9012359647335296; Martins, Fernando Ramos [UNIFESP]The development of renewable energy sources plays a fundamental role in the transition towards a low carbon economy. Considering that renewable energy resources have an intrinsic relationship with meteorological conditions and climate patterns, methodologies based on the remote sensing of the atmosphere are fundamental sources of information to support the energy sector in planning and operation procedures. This Special Issue is intended to provide a highly recognized international forum to present recent advances in remote sensing to data acquisition required by the energy sector. After a review, a total of eleven papers were accepted for publication. The contributions focus on solar, wind, and geothermal energy resource. This editorial presents a brief overview of each contribution.
- ItemAcesso aberto (Open Access)Nicotine use in patients with schizophrenia evaluated by the Fagerström Tolerance Questionnaire: a descriptive analysis from a Brazilian sample(Associação Brasileira de Psiquiatria - ABP, 2008-12-01) Chaves, Leonardo; Shirakawa, Itiro [UNIFESP]; Brazilian Psychiatry Association; Universidade Federal de São Paulo (UNIFESP)OBJECTIVE: This is a descriptive study to determine smoking prevalence rates in a convenience sample of patients with schizophrenia and to describe clinical/demographic variables for nicotine use in this population. METHOD: Patients with schizophrenia were consecutively invited to answer a standard clinical/demographic questionnaire and a questionnaire on smoking habits (Fagerstrom Tolerance Questionnaire). RESULTS: Eighty-three patients were interviewed. The smoking rate was 57.8% (n = 48). Male (68.8%) patients smoked more than females did (31.3%; p = 0.081). Compared to patients who smoked at the time of disease onset, those who only started smoking after disease onset had a lower mean age at the time of disease onset [24 years old (SD = ± 6.8) vs.19 years old (SD = ± 3.9; p = 0.041)]. Patients who preferred high-nicotine content cigarettes (p < 0.01) had higher frequency of smoking inhalation (p < 0.05) and had more urgency to smoke the first cigarette in the morning (p < 0.05). Twenty-seven (56.3%) of smoking patients were heavy smokers (FTQ > 8). CONCLUSIONS: Patients with schizophrenia in our convenience sample smoked in a higher rate compared to the general population in Brazil. Smoking patients were heavy smokers evaluated by the Fagerstrom Tolerance Questionnaire.
- ItemSomente MetadadadosParameters optimization defined by statistical analysis for cysteine-dextran radiolabeling with technetium tricarbonyl core(Elsevier B.V., 2011-04-01) Fernandez Nunez, Eutimio Gustavo; Faintuch, Bluma Linkowski; Teodoro, Rodrigo; Wiecek, Danielle Pereira; Silva, Natanael Gomes da; Papadopoulos, Minas; Pelecanou, Maria; Pirmettis, Loannis; Oliveira Filho, Renato Santos de [UNIFESP]; Duatti, Adriano; Pasqualini, Roberto; Inst Energet & Nucl Res; Natl Ctr Sci Res Demokritos; Universidade Federal de São Paulo (UNIFESP); Univ Ferrara; CIS Bio IntThe objective of this study was the development of a statistical approach for radiolabeling optimization of cysteine-dextran conjugates with Tc-99m tricarbonyl core. This strategy has been applied to the labeling of 2-propylene-S-cysteine-dextran in the attempt to prepare a new class of tracers for sentinel lymph node detection, and can be extended to other radiopharmaceuticals for different targets. the statistical routine was based on three-level factorial design. Best labeling conditions were achieved. the specific activity reached was 5 MBq/mu g. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.