Logarithmic N=1 superconformal field theories

We study the logarithmic superconformal field theories. Explicitly, the two-point functions of N=1 logarithmic superconformal field theories (LSCFT) when the Jordan blocks are two (or more) dimensional, and when there are one (or more) Jordan block(s) have been obtained. Using the well known three-point fuctions of N=1 superconformal field theory (SCFT), three-point functions of N=1 LSCFT are obtained. The general form of N=1 SCFT's four-point functions is also obtained, from which one can easily calculate four-point functions in N=1 LSCFT.Comment: 10 pages, LaTeX file, minor revisions made, to appear in Phys. Lett.

Elaboration of the Life Cicle Inventory from the perspective of Sistemic Design in a Biojewels System

Dentre as demandas pela implantação de estratégias de sustentabilidade, surge o conceito de Design Sistêmico (DS) como fundamentação para projetos que visam menor impacto ambiental. Aliado a isso, o método de Avaliação do Ciclo de Vida (ACV) permite quantificar o impacto ambiental de produtos e sistemas. Deste modo, orientado pela Norma ABNT NBR ISO 14040 e por pesquisas ligadas à aplicação do DS e da ACV, foi desenvolvido o Inventário do Ciclo de Vida de um sistema, tendo como objetivo o aproveitamento de seu coproduto como matéria-prima em outro sistema. Trata-se do uso do endocarpo da Macaúba (Acrocomia aculeata), um dos ‘resíduos’ (output) do sistema produtivo cosméticos, como insumo (input) na produção de biojoias. Embora sejam necessários estudos mais aprofundados sobre o volume de produção e a geração de renda, é possível concluir quanto à viabilidade de reinserção de materiais que seriam considerados rejeitos em um sistema produtivo como recurso em um outro.Among the demands for the implementation of sustainability strategies, the concept of Systemic Design (DS) emerges as basis for projects that aim to reduce environmental impact. In addition, the Life Cycle Assessment (LCA) method allows quantifying the environmental impact of products and systems. In this way, guided by the Standard ABNT NBR ISO 14040 and researches related to the application of DS and LCA, the Life Cycle Inventory of a system has been developed, with the objective of using its co-product as raw material in another system. This case refers to the use of the Macaúba endocarp (Acrocomia aculeata), one of the 'residues' (output) of the cosmetic production system, as an resource (input) in the production of bio-jewels. Although it is necessary more deepened studies about volume of production and the generation of income, it is possible to conclude the feasibility of reinserting materials that would be considered waste in one production system as a resource in another one

Smoking behaviour predicts tobacco control attitudes in a high smoking prevalence hospital: A cross-sectional study in a Portuguese teaching hospital prior to the national smoking ban

<p>Abstract</p> <p>Background</p> <p>Several studies have investigated attitudes to and compliance with smoking bans, but few have been conducted in healthcare settings and none in such a setting in Portugal. Portugal is of particular interest because the current ban is not in line with World Health Organization recommendations for a "100% smoke-free" policy. In November 2007, a Portuguese teaching-hospital surveyed smoking behaviour and tobacco control (TC) attitudes before the national ban came into force in January 2008.</p> <p>Methods</p> <p>Questionnaire-based cross-sectional study, including all eligible staff. Sample: 52.9% of the 1, 112 staff; mean age 38.3 ± 9.9 years; 65.9% females. Smoking behaviour and TC attitudes and beliefs were the main outcomes. Bivariable analyses were conducted using chi-squared and MacNemar tests to compare categorical variables and Mann-Whitney tests to compare medians. Multilogistic regression (MLR) was performed to identify factors associated with smoking status and TC attitudes.</p> <p>Results</p> <p>Smoking prevalence was 40.5% (95% CI: 33.6-47.4) in males, 23.5% (95% CI: 19.2-27.8) in females (p < 0.001); 43.2% in auxiliaries, 26.1% in nurses, 18.9% among physicians, and 34.7% among other non-health professionals (p = 0.024). The findings showed a very high level of agreement with smoking bans, even among smokers, despite the fact that 70.3% of the smokers smoked on the premises and 76% of staff reported being frequently exposed to second-hand smoke (SHS). In addition 42.8% reported that SHS was unpleasant and 28.3% admitted complaining. MLR showed that smoking behaviour was the most important predictor of TC attitudes.</p> <p>Conclusions</p> <p>Smoking prevalence was high, especially among the lower socio-economic groups. The findings showed a very high level of support for smoking bans, despite the pro-smoking environment. Most staff reported passive behaviour, despite high SHS exposure. This and the high smoking prevalence may contribute to low compliance with the ban and low participation on smoking cessation activities. Smoking behaviour had greater influence in TC attitudes than health professionals' education. Our study is the first in Portugal to identify potential predictors of non-compliance with the partial smoking ban, further emphasising the need for a 100% smoke-free policy, effective enforcement and public health education to ensure compliance and promote social norm change.</p

Hypromelose / polyethylene oxide (PEO) matrix tablets for oral sustained Aacyclovir release: formulation aspects and release behavior

Hydrophilic matrix tablets were developed with acyclovir (ACV), using hypromelose and polyethylene oxide (PEO) in different concentrations. Matrix tablets obtained in each formulation were evaluated to determine the weight variation, thickness, hardness, drug content, swelling and erosion and in vitro release. The swelling and erosion studies were influenced by pH value and polymer type. The ACV release under acid conditions occurred around 12 and 6 h for PEO and hypromelose matrices, respectively. The mechanism involved in drug release was characterized by anomalous behavior for all formulations, except in 0.1 N HCl where formulations containing hypromelose demonstrated a Super Case II kinetics.Colegio de Farmacéuticos de la Provincia de Buenos Aire

Ensino de História hoje: errâncias, conquistas e perdas

Este artigo analisa tradições de debate sobre Ensino de História no Brasil desde a ditadura de 1964-1984. Ele discute as mudanças, permanências, conquistas e perdas na história da disciplina. Destaca a importância da cultura escolar, a necessária continuidade da escola como instituição e o diálogo com formas não escolares de ensino