Long-COVID psychological symptoms in child and adolescent population: a standardized proposal for its exploration

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Cannabis use and nonuse in patients with first-episode psychosis: A systematic review and meta-analysis of studies comparing neurocognitive functioning

BACKGROUND.: The implications of cannabis use in the onset of early psychosis and the severity of psychotic symptoms have resulted in a proliferation of studies on this issue. However, few have examined the effects of cannabis use on the cognitive symptoms of psychosis (i.e., neurocognitive functioning) in patients with first-episode psychosis (FEP). This systematic review and meta-analysis aim to assess the neurocognitive functioning of cannabis users (CU) and nonusers (NU) with FEP. METHODS.: Of the 110 studies identified through the systematic review of 6 databases, 7 met the inclusion criteria, resulting in 14 independent samples and 78 effect sizes. The total sample included 304 CU with FEP and 369 NU with FEP. The moderator variables were age at first use, duration of use, percentage of males, and age. RESULTS.: Effect sizes were not significantly different from zero in any neurocognitive domain when users and NU were compared. Part of the variability in effect sizes was explained by the inclusion of the following moderator variables: (1) frequency of cannabis use (beta = 0.013, F = 7.56, p = 0.017); (2) first-generation antipsychotics (beta = 0.019, F = 34.46, p ≤ 0.001); and (3) country where the study was carried out (beta = 0.266, t = 2.06, p = 0.043). CONCLUSIONS.: This meta-analysis indicates that cannabis use is not generally associated with neurocognitive functioning in patients with FEP. However, it highlights the deleterious effect of low doses of cannabis in some patients. It also stresses the importance of the type of antipsychotic prescription and cannabis dose as moderator variables in the neurocognitive functioning of CU with FEP.This study was partially funded by UNIR Research(http:// research.unir.net), Universidad Internacional de La Rioja (UNIR, http://www. unir.net), under Research Support Strategy 3 [2015–2017], Research Group “PSICONLINE General Health Psychology,” and the Ministry of Economy, Industry, and Competitiveness (MINECO) within the framework of the Subprogram Challenge-Research (Retos-Investigación) I+D+I 2017 (PSI2017- 82542-R)

A Doubly Orthogonal Matching Pursuit Algorithm for Sparse Predistortion of Power Amplifiers

This letter presents a new method for the digital predistortion (DPD) of power amplifiers (PAs) based on sparse behavioral models. The Gram-Schmidt orthogonalization is synergistically integrated into the orthogonal matching pursuit algorithm to decorrelate the selected model regressors against the components still to be selected. Experiments on a test bench based on a GaN PA driven by a 15-MHz orthogonal frequency division multiplexing signal were conducted in order to validate the algorithm. Experimental results in a DPD application and a comparison with other state-of-the-art algorithms highlight the enhancement of its pruning capabilities, reducing the number of coefficients while maintaining the performance.Comisión Interministerial de Ciencia y Tecnología (CICYT) TEC2014-53103-P TEC2017-82807-

Riqueza y rareza florísticas en los afloramientos dolomíticos de las Cordilleras Béticas (sur de España): ensayo preliminar.

RESUMEN. Riqueza y rareza florísticas en los afloramientos dolomíticos de las Cordilleras Béticas (sur de España): ensayo preliminar. Sobre los afloramientos dolomíticos de las Cordilleras Béticas se desarrollan comunidades vegetales muy específicas y ricas en endemismos. Dichas comunidades no han sido estudiadas desde un punto de vista conservacionista. Este trabajo aborda su distribución, riqueza y grado de protección actuales permitiendo evaluar la eficacia de la red de espacios protegidos. Para ello, se ha creado una base de datos de presencia/ausencia de dolomitófilos en cuadrículas UTM de 10 km. de lado que han sido definidas como unidades geográficas operacionales (UGOs). Posteriormente, se ha evaluado la riqueza, la rareza en continuo y la rareza en discontinuo de las UGOs. Los resultados obtenidos han subrayado la importancia del sector Malacitano-Almijarense de la provincia Bética (en especial la zona del Trevenque) como centro de riqueza y endemicidad de dolomitófilos. Por otra parte, la red de espacios naturales abarca casi la totalidad de las localidades de mayor interés en la Comunidad Autónoma de Andalucía, mientras que tiene importantes lagunas en la Región de Murcia y en la provincia de Albacete (perteneciente a la Comunidad Autónoma de Castilla-La Mancha).Palabras clave. Dolomitófilo, dolomías, selección de reservas, endemismo, espacios naturales protegidos, flora.ABSTRACT. Floral richness and rarity in the dolomitic outcrops of the Baetic Ranges (southern Spain): a preliminary essay. The dolomitic areas of the Baetic Ranges house extremely peculiar plant communities. These communities are diverse and especially rich in endemic species. The vegetation and flora of the dolomitic outcrops have not been studied from a conservation point of view. This work is focused on the distribution, richness and current level of protection of these areas, consequently, it allows us to evaluate the efficacy of the protected areas network. In order to meet this goal, a “presence/absence” database of the dolomitic taxa has been carried out, according to UTM cells sized an area of 10 × 10 km. These cells have been used as “Operational Geographic Units” (OGU’s). In due course, the richness, the continuous and discontinuous rarity of every OGU have been evaluated. The results depicted the great importance of the Malacitano-Almijarense sector of the Baetic province (especially where the Trevenque mountain is located) as a spot of richness and endemicity of dolomitic taxa. In addition, the protected areas network appears to be quite efficient in meeting conservation objectives in the Region of Andalusia, whilst it is clearly deficient in the Region of Murcia and the Province of Albacete (included in the Region of Castilla-La Mancha).Key words. Dolomitic species, dolomites, selection of reserves, endemism, natural protected areas, flora

Magnetoplasmonic Interferometers and Applications

Comunicación presentada en el 2nd Early Stage Researchers Workshop in Nanoscience, celebrado en Madrid el 28 y 29 de junio de 2012.Surface plasmons polaritons (SPP) are evanescent waves that propagate along a dielectric-metal interface. They can be confined in subwavelength metal structures, i.e. below the diffraction limit, which leads to many possible applications, including miniaturized optical devices. Within that context, the development of active plasmonics is important to achieve nanophotonic devices with advanced functionalities. This requires a system where the plasmon properties can be manipulated using an external agent. Among the different control agents considered so far, the magnetic field seems a promising candidate, since it is able to modify the dispersion relation of SPP at reasonable magnetic field strengths, and with a high switching speed. This modulation comes from the non-diagonal elements of the dielectric tensor, εij, appearing when the magnetic field is turned on. For noble metals, the ones typically used in plasmonics, these elements are proportional to the applied magnetic field but, unfortunately, very small at field values reasonable for developing applications. On the other hand, ferromagnetic metals have sizeable εij values at small magnetic fields (proportional to their magnetization), but are optically too absorbent. A smart system to develop magnetic field tunable plasmonic devices is the use of multilayers of noble and ferromagnetic metals. That is the framework of the present work, where we analyze the magnetic field induced SPP wavevector modulation (Ak) in Au/Co/Au films as a function of the wavelength and its possible application as a sensor.N

Eco-termómetro: una herramientas para la divulgación de la economía y la captación de estudiantes

Memoria ID12-0149. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2012-2013

Estudio de la dinámica del cigüeñal de un motor diesel de 16 cilindros en V a 60º: Implicaciones en las causas de rotura.

Este artículo analiza las causas de la rotura del cigüeñal de un motor diesel de cuatro tiempos de 16 cilindros en V a 60°, de potencia nominal 1500 k W a 1500 rpm. El análisis se ha desarrollado en tres etapas. En la primera fase se han evaluado con un modelo de elementos finitos las solicitaciones de tipo estático en la muñequilla. La segunda etapa consistió en el desarrollo de un modelo dinámico del sistema cigüeñal -acoplamiento -alternador y en el análisis de las solicitaciones de tipo dinámico. Finalmente se llevó cabo un análisis metalográfico del material. El trabajo ha permitido identificar de forma inequívoca la fatiga como causa de la rotura.This paper analyzes the causes of the breakage of the crankshaft of a four stroke diese! engine with 16 cylinders in V (60°). The nominal power is 1500 kW at 1500 rpm. The analysis has been developed in three steps. A static study through a finite elements program was the first step. The second part consisted in the development of a dynamic model of the crankshaft within the alternator. And finally a metallographic analysis of the material. The work has allowed to identify the fatigue like cause of the breakage

Nueva citas para la flora de la provincia de Almería (Sureste Ibérico, España)

Three new floristic records are presented in this work including one new species for Andalucia (Tamarix dalmatica), one new species for the province of Almería (Filago hispanica) and a confirmation for this province (Orobanche ballotae).Se presentan tres citas florísticas que suponen, una novedad para Andalucía (Tamarix dalmatica), una novedad la provincia de Almería (Filago hispanica) y una confirmación para dicha provincia (Orobanche ballotae)

Nutrients and Dietary Approaches in Patients with Type 2 Diabetes Mellitus and Cardiovascular Disease: A Narrative Review

Cardiovascular disease (CVD) is the most common cause of morbidity and mortality in developed countries. The prevalence of CVD is much higher in patients with type 2 diabetes mellitus (T2DM), who may benefit from lifestyle changes, which include adapted diets. In this review, we provide the role of different groups of nutrients in patients with T2DM and CVD, as well as dietary approaches that have been associated with better and worse outcomes in those patients. Many different diets and supplements have proved to be beneficial in T2DM and CVD, but further studies, guidelines, and dietary recommendations are particularly required for patients with both diseases

Magnetoplasmonics: Combining Magnetic and Plasmonic Functionalities

Comunicación presentada en el 3rd European Workshop on Self Organized Nanomagnets, celebrado en Guadarrama del 16 al 20 de abril de 2012.Nanosystems with combined magnetic and plasmonic functionalities have in recent years become an active topic of research. In these new stn-lctures, know as magneto-plasmonics, magnetic and plasmonic properties are interlwined, allowing for example plasmonic properties to become tunable upon de application of a magnetic field (active plasmonics), or the Magneto*Optical (MO) effects to be largely increased by plasmon resonance excitation, as a consequence of the enhancement of the electromagnetic (EM) field in the MO active component of the structure. ln this last case, the study of the enhanced MO activity in structures with subwavelength dimensions is especially interesting since they may be viewed as nanoantennas in the visible range with MO functionalities. The light harvesting properties of these systems upon plasmon resonance excitation bring as a consequence an enhanced EM field in its interior, and more interestingly in the region where the MO active component is present. At this stage, optimizing the EM field distribution within the structure by maximizing it in the MO components region while simultaneously minimizingit in all the other, non MO active, lossy components, will allow for the development of novel systems with even larger MO activity with reduced optical losses .Peer Reviewe