Spectroscopic characterization of novel push-pull thieno[3,2-b]thiophene derivatives functionalized with different acceptor groups.

Push-pull π-conjugated systems of the thiophene type have several interesting applications as nonlinear optical (NLO) and photochromic materials, sensitizers for dye sensitized solar cells (DSSCs), etc. As part of an on-going research to develop efficient donor-acceptor substituted heterocyclic systems for diverse applications such as NLO and organic sensitizers for DSSCs, we report in this communication the synthesis and characterization of two novel heterocyclic compounds 1-2, using several synthetic methodologies. These new push-pull systems are based on a furan donor moiety and a thieno[3,2-b]thiophene spacer, functionalized with different electron withdrawing groups. The full characterization of the new compounds was performed using UV-visible (absorption and emission), 1H NMR and IR spectroscopies. The experimental results showed that the optical and electronic properties of these push-pull systems can be readily tuned by varying the electron-acceptor strength of the groups linked to the thieno[3,2-b]thiophene π-bridge. Moreover, their push-pull character with a significant intramolecular charge transfer (ICT) from the donor furan heterocycle to the acceptor groups and a high polarizability of the whole π-conjugated systems reveal their potential application as chromophores for NLO and/or as sensitizers for DSSCs.FCTFEDERQRE

Efeito de óleos vegetais e mineral sobre ovos da mosca-branca Bemisia tabaci biótipo B.

Este trabalho teve como objetivo avaliar o efeito de óleos vegetais e mineral sobre ovos de Bemisia tabaci biótipo B no feijoeiro comum Phaseolus vulgaris.Conpeex 2010

Seletividade do óleo de mamona a estágios imaturos do Trichogramma pretiosum Riley, 1978 (Hymenoptera: Trichogrammatidae).

Os óleos vegetais e inimigos naturais são considerados importantes métodos alternativos para o controle de pragas. O óleo de mamona destaca-se por apresentar propriedades físico-químicas que lhe conferem atividades inseticidas. O Trichogramma pretiosum é um parasitóide de ovo de várias espécies-praga da ordem Lepidoptera. Neste sentido, foi avaliada a seletividade do Óleo de mamona® nas concentrações de 1, 2, 3, 4, 5 e 6% (v/v), do detergente neutro Zupp® a 2% (v/v) (emulsificante para o óleo), do inseticida clorpirifós a 0,5 L i.a./ha (testemunha positiva) e da água destilada para os estágios imaturos do T. pretiosum

Social presence and the composite face effect

A robust finding in social psychology research is that performance is modulated by the social nature of a given context promoting social inhibition or facilitation effects. In the present experiment, we examined if and how social presence impacts holistic face perception processes by asking participants, in the presence of others and alone, to perform the composite face task. Results suggest that completing the task in the presence of others (i.e., mere co-action) is associated with better performance in face recognition (less bias and higher discrimination between presented and non-presented targets) and with a reduction in the composite face effect. These results make clear that social presence impact on the composite face effect does not occur because presence increases reliance on holistic processing as a "dominant" well-learned response, but instead, because it increases monitoring of the interference produced by automatic response.info:eu-repo/semantics/acceptedVersio

Influence of crop system fruit quality, carotenoids, fatty acids and phenolic compounds in cherry tomatoes

Tomato is one of the most consumed vegetables in the world, and its intake is known to be beneficial for human health. The nutritional quality of tomato is connected with numerous factors namely the cultivation system. To achieve the highest fruit quality and yield, the cherry tomato (Lycopersicon esculentum Mill. var. Moscatel RZ) was cultivated in three cultivation systems and its nutritional quality was evaluated. The highest fruit productivity, 2135–2240 g plant-1 dry weight (dw), was observed for the cherry tomatoes grown in the soilless systems. The cherry tomato from the hydroponic culture had the highest protein (13.41% dw), lipid (3.20% dw), sugar (354.94 mg g-1 dw) and taste index (1.24). It also comprised high amounts of monounsaturated and polyunsaturated fatty acids, like oleic (1.28 mg g-1 dw) and linoleic acids (5.42 mg g-1 dw). With respect to cherry tomato from the organic culture, higher contents of carotenoids—lycopene (47.1 mg kg-1 dw) and polyphenols (56.7 mg GAE 100 g-1 dw) were verified. Flavonoids were the main family of phenolic compounds found in the cherry tomato. The highest levels of chalconaringenin (51.95 mg 100 g-1 dw) and rutin (39.69 mg 100 g-1 dw) were observed in the cherry tomatoes cultivated through organic practices. This study shows that the agronomic system greatly influences the different characteristics associated with fruit quality. Hydroponic cultures presented higher quality, namely texture and taste, while the higher amounts of bioactive compounds were found in the organic culture.info:eu-repo/semantics/publishedVersio

Efeito de óleos vegetais na mortalidade de adultos de Bemisia tabaci biótipo B e na transmissão do vírus do mosaico dourado no feijoeiro comum.

Considerando a importância da B. tabaci na agricultura nacional e o potencial de uso de inseticidas vegetais no controle de insetos-praga, esse trabalho teve como objetivo avaliar o efeito dos óleos de nim, laranja, mamona e gergelim na mortalidade de adultos da B. tabaci biótipo B e na transmissão do vírus do mosaico dourado no feijoeiro comum.CONAFE

Aplicabilidad de escalas/indicadores para el control del dolor en pacientes críticamente incapaces de verbalizar: una revisión sistemática de la literatura

Objective: To conduct a systematic review of the existing literature about the applicability of scales/indicators for pain monitoring in critically ill patients who are unable to verbalize. Methods: We performed a systematic review of the literature, according to the Joanna Briggs Institute's guidelines, in the following databases: MEDLINE, CINAHL, and Cochrane Central Register of Controlled Trials. The search was executed using, as main descriptors, "Critically Ill Patient", "Pain", "Scale" and "Instrument", in Portuguese, English, Italian, and Spanish. We considered the period between January 2012 and December 2017, and obtained a total of 149 results. From these, we selected 11 fi nal full-text articles for extraction and analysis, which met the required inclusion criteria. Two researchers made the search and two independent reviewers carried out the critical evaluation, extraction and synthesis of the data. Results: The key to adequate pain management lies in detecting and assessing several indicators, such as: facial expression, vocalization, body movements, muscle tone, adaptation to mechanical ventilation. Subsequently, it is fundamental to intervene accordingly and to reassess the patient's status. The BPS (Behavioral Pain Scale) and the CPOT (Critical-care Pain Observation Tool) are considered the most appropriate scales for pain assessment in critically ill patients who are incapable of verbalizing. While the BPS should only be used in ventilated patients, the CPOT can be used in both ventilated and non-ventilated patients. Conclusion: The BPS and the CPOT are two scales recognized as reliable, valid, and easy to apply, for pain monitoring in critically ill patients who are unable to verbalize their pain.Objetivo: Llevar a cabo una revisión sistemática de la literatura existente sobre la aplicabilidad de escalas/indicadores para el control del dolor en pacientes críticamente enfermos que no pueden verbalizar. Métodos: Se realizó una revisión sistemática de la literatura en las siguientes bases de datos: MEDLINE, CINAHL y el Registro Cochrane Central de Ensayos Controlados, como descriptores principales “Paciente en estado crítico”, “Dolor”, “Escala” e “Instrumento”. Consideramos el periodo entre enero de 2012 y diciembre de 2017, y obtuvimos un total de 149 resultados. De estos, seleccionamos 12 artículos finales de texto completo para extracción y análisis, que cumplieron con los criterios de inclusión requeridos. Dos revisores independientes llevaron a cabo la evaluación crítica, extracción y síntesis de los datos. Resultados: La clave para el manejo adecuado del dolor radica en detectar y evaluar varios indicadores, tales como: expresión facial, tamaño de la pupila, vocalización, movimientos corporales, tono muscular, adaptación a la ventilación mecánica, presión arterial y frecuencia cardiaca. Posteriormente, es fundamental intervenir en consecuencia y reevaluar el estado del paciente. La BPS (Escala de dolor conductual) y la CPOT (herramienta de observación del dolor en cuidados críticos) se consideran las escalas más adecuadas para la evaluación del dolor en pacientes críticos que son incapaces de verbalizar. Si bien el BPS solo se debe utilizar en pacientes ventilados, el CPOT se puede usar tanto en pacientes ventilados como no ventilados. Conclusión: el BPS y el CPOT son dos escalas reconocidas como confiables, válidas y fáciles de aplicar para el control del dolor en pacientes críticamente enfermos que no pueden verbalizar su dolor.info:eu-repo/semantics/publishedVersio

Clinical and histological differences of papillary thyroid carcinoma in patients with chronic lymphocytic thyroiditis

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Grids of stellar evolution models for asteroseismology (CESAM + POSC)

In this paper we present a grid of stellar evolution models, computed with an up-to-date physical description of the internal structure, using the Code d'Evolution Stellaire Adaptatif et Modulaire (CESAM). The evolutionary sequences span from the pre-main sequence to the beginning of the Red Giant Branch and cover an interval of mass typical for low and intermediate mass stars. The chemical composition (both helium and metal abundance) is the solar one. The frequencies of oscillation, computed for specific stellar models of the grid using the Porto Oscillations Code (POSC), are also provided. This work was accomplished in order to support the preparation of the CoRoT mission within the Evolution and Seismic Tools Activity (CoRoT/ESTA). On the other hand, the grid can also be used, more generally, to interpret the observational properties of either individual stars or stellar populations. The grids (data and documentation) can be found at http://www.astro.up.pt/corot/models/cesamComment: Paper accepted for publication by Astrophysics and Space Scienc

Terpyridine derivatives functionalized with (hetero)aromatic groups and the corresponding Ru complexes: synthesis and characterization as SHG chromophores

Push–pull terpyridine derivatives were synthesized and characterized in order to study the variations produced in their optical and electronic properties by linking different (hetero)aromatic electron donor moieties at position 4 of the electron deficient terpyridine moiety. The final donor-acceptor systems were synthesized in fair to good yields by Kröhnke condensation of the precursor aldehydes, with 2-acetylpyridine. Hyper-Rayleigh scattering in dioxane solutions using a fundamental wavelength of 1064 nm was employed to evaluate their second-order nonlinear optical properties. Terpyridine derivative functionalized with the 9-ethyl-9H-carbazolyl group exhibited the largest first hyperpolarizability (beta = 610 × 10-30 esu, using the T convention) thus indicating its potential application as a second harmonic generation (SHG) chromophore. Terpyridine derivatives were also used as ligands for the synthesis of novel [RuII(tpy)(NCS)3]– complexes, prepared in good yields by a two-step procedure involving the preparation of [RuIII(tpy)(Cl3] as precursors. RutheniumII complexes display a broad absorption in the visible range, accounting for their very dark color. Their redox behaviour is mainly characterized by the RuII-RuIII oxidation and by the ligand-centred reduction, whose potentials can be finely tuned by the electronic properties of the aromatic substituents on the terpyridine ligand. Hyper-Rayleigh scattering in methanol solutions using a fundamental wavelength of 1064 nm was also employed to evaluate their second-order nonlinear optical properties.Thanks are due to Fundação para a Ciência e a Tecnologia and FEDERCOMPETE for financial support through Centro de Química (UID/QUI/ 00686/2013 and UID/QUI/0686/2016), and a PhD grant to S. S. M. Fernandes (SFRH/BD/87786/2012). The NMR spectrometer Bruker Avance III 400 is part of the National NMR Network and was purchased with funds from FCT and FEDER. The pulsed laser system was acquired within the framework of the grant (PTDC/CTM/105597/2008) from the Portuguese Foundation for Science and Technology (FCT) with funding from FEDER-COMPETE.info:eu-repo/semantics/publishedVersio