PT Invariant Complex E (8) Root Spaces

We provide a construction procedure for complex root spaces invariant under antilinear transformations, which may be applied to any Coxeter group. The procedure is based on the factorisation of a chosen element of the Coxeter group into two factors. Each of the factors constitutes an involution and may therefore be deformed in an antilinear fashion. Having the importance of the E(8)-Coxeter group in mind, such as underlying a particular perturbation of the Ising model and the fact that for it no solution could be found previously, we exemplify the procedure for this particular case. As a concrete application of this construction we propose new generalisations of Calogero-Moser Sutherland models and affine Toda field theories based on the invariant complex root spaces and deformed complex simple roots, respectively

Los sistemas de conduccion como factor determinante en la reestructuracion de la viña

info:eu-repo/semantics/publishedVersio

Os sistemas de condução como factor determinante da reestruturação da vinha

info:eu-repo/semantics/publishedVersio

Influência do sistema de poda no vigor e produção da videira, em condições naturais de deficiência hídrica, casta ‘Fernão Pires’

Apresentam-se alguns resultados de um ensaio instalado na Tapada da Ajuda, em Lisboa, com a casta 'Fernão Pires'. Estuda-se o efeito do sistema de poda (Guyot vs Royat), no vigor e produtividade da videira e na qualidade do mosto em condições naturais de stress hídrico. O stress hídrico provocou uma senescência prematura das folhas e induziu baixas taxas fotossintéticas que afectaram negativamente a maturação e originaram uma progressiva redução do vigor. Durante a maturação, apesar dos sistemas Royat terem apresentado potenciais hídricos foliares mais desfavoráveis relativamente aos Guyot, a taxa fotossintética de folhas expostas não foi afectada. Em geral, o sistema de poda não influenciou o rendimento e a qualidade do mosto mas os índices do vigor foram significativamente superiores nos sistemas Royat. Em 1992 foi testado o efeito da rega tendo-se verificado uma influência positiva no comportamento fisiológico, no crescimento vegetativo e no rendimento, sem afectar a qualidade do mostoinfo:eu-repo/semantics/publishedVersio

Résultats écophysiologiques de la vigne au Portugal. Aspects hydriques

Dans la vigne au Portugal les effets provoqués par le stress hydrique et les températures élevées se superposent fréquemment sur les effets dûs aux systèmes de conduite (Chaves & Pereira, 1987; Chaves & Rodrigues, 1987; Clímaco et al., 1991; Lopes & Castro, 1992). Bien que la vigne ait une capacité pour survivre dans des conditions de sécheresse (Champagnol, 1984) les échanges gazeux, la croissance et la maturation des baies peuvent être affectés. Le niveau auquel ces processus sont affectés dépend, parmis d'autres facteurs, de l'intensité du stress (Williams & Matthews, 1990), de l'époque où il se révèle (Smart & Coombe, 1983) et aussi du cépage (Düring & Klingenmeyr, 1987; Regina & Carbonneau, 1992). Dans ce travail nous avons observé l ́effet de la disponibilité hydrique du sol sur les échanges gazeux et l'état hydrique des plantes en deux cépages - Fernão Pires (B) et Periquita (N) - cultivés en trois terroirs situés dans la région agricole "Ribatejo et Oeste"info:eu-repo/semantics/publishedVersio

Implicações culturais e fisiológicas da vindima mecânica. Algumas considerações

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Height difference between the vestibular and palatal walls and palatal width: a cone beam computed tomography approach

Background: The objective of this study was to measure two parameters involved in tri-dimensional implant plan‑ ning: the position of the buccal and palatal bone wall and the palatal thickness. Methods: Cone beam computed tomography (CBCT) images (Planmeca ProMax 3D) of 403 teeth (208 upper teeth and 195 lower teeth) were obtained from 49 patients referred to the Dental School of Seville from January to Decem‑ ber 2014. The height diference between the palatal and buccal walls was measured on the most coronal point of both walls. The thickness of the palatal wall was measured 2 mm from the most coronal point of the palatal wall. Results: The mean values in the maxilla were 1.7±0.9 mm for central and lateral incisors, 2.2±1.7 mm for canines, 1.6±0.9 mm for premolars and 1.9±1.5 mm for molars. In the lower jaw, the mean values were 1.3±0.8 mm for inci‑ sors, 1.7±1.2 mm for canines, 2.3±1.3 mm for premolars, and 2.6±1.7 mm for molars. In the upper jaw, more than 55% of maxillary teeth (excluding second premolars and molars) presented mean height diferences greater than 1 mm. In the mandible, more than 60% of incisors showed a buccal bone thickness of 1 mm from the apical to lingual aspect. All teeth except the second premolar presented a buccal wall located more than 1 mm more apically than the lingual bone wall. Conclusions: The buccal bone wall is located more apically (greater than 1 mm) than the palatal or lingual table in most of the cases assessed. The thickness of the palatal or lingual table is also less than 2 mm in the maxilla and man‑ dible, except in the upper canines and premolars and the lower molars

Strategies to enhance the removal of Fluoroquinolones

Fluoroquinolones (FQs) are broad-spectrum antibiotics that play an important role in the treatment of serious bacterial infections. Currently, several FQs are available but ciprofloxacin (CPF), ofloxacin (OFL) and norfloxacin (NOR) are amongst the most worldwide prescribed antibiotics. Antibiotics can reach wastewater treatment plants (WWTP) from different routes. Thus removal of these contaminants during the biotreatment process is of major importance in order to avoid their release to other environmental matrices. Granular sludge sequencing batch reactors (SBR) constitute a novel biofilm technology for wastewater treatment extremely promising for the treatment of effluents containing toxic compounds. Therefore, in this study a granular sludge SBR, established with activated sludge from a WWTP, was operated for the treatment of an aqueous stream containing FQs. No evidence of FQ biodegradation followed by HPLC with Fluorescence Detection was observed but FQs adsorbed to the aerobic granular sludge, being gradually released into the medium after withdrawal of the FQs in the inlet stream. In a previous study, Labrys portucalensis F11 demonstrated to be able to degrade FQs, namely OFL, NOR and CPF, when supplied individually or as a mixture, in the presence of an easy degradable carbon source. Different removal extents were obtained for the tested concentrations (ranging from 0.8 to 30 μM), but overall the uptake capacity of strain F11 for individual FQs decreased with increasing the initial FQ concentration. When supplied with a mixture FQs, strain F11 concomitantly removed each target antibiotic but a decrease on the biodegradability of FQs was observed which could be explained by competition mechanisms. The ability of Labrys portucalensis F11 to grow using the readily available carbon source while maintain its ability to degrade FQs reinforce the potential of this strain in bioaugmentation processes. As the indigenous microbial communities in biotreatment processes rarely are able to remove such contaminants, using this promising FQ-degrading strain, bioaugmentation strategies such as inoculation of the degrading strain, as a suspension or immobilized on carrier material, or using a plasmid donor strain carrying the degradative genes, could be assessed to improve FQ removal. Acknowledgments: C.L. Amorim, A.S. Maia and I.S. Moreira wish to acknowledge the research grants from Fundação para a Ciência e Tecnologia (FCT), Portugal (Ref. SFRH/BD/47109/2008, SFRH/BD/86939/2012 and SFRH/BPD/87251/2012, respectively) and Fundo Social Europeu (Programa Operacional Potencial Humano (POPH), Quadro de Referência Estratégico Nacional (QREN))). This work was supported by FCT through the projects PTDC/EBB-EBI/111699/2009 and PEst-OE/EQB/LA0016/2011