Coloqui nou sobre la bola

La fecha que aparece en el pie de imp. de la 2ª parte es 1784

Des. Erasmi Rot. Ecclesiastae sive de ratione concionandi libri quatuor opus recens nec antehac [sic] à quo quam excusum

Nombres de imp. constan en colofón

One Hundred Years of Grain Omics: Identifying the Glutens That Feed the World.

Glutens, the storage proteins in wheat grains, are a major source of protein in human nutrition. The protein composition of wheat has therefore been an important focus of cereal research. Proteomic tools have been used to describe the genetic diversity of wheat germplasms from different origins at the level of polymorphisms in alleles encoding glutenin and gliadin, the two main proteins of gluten. More recently, proteomics has been used to understand the impact of specific gluten proteins on wheat quality. Here we review the impact of proteomics on the study of gluten proteins as it has evolved from fractionation and electrophoretic techniques to advanced mass spectrometry. In the postgenome era, proteomics is proving to be essential in the effort to identify and understand the interactions between different gluten proteins. This is helping to fill in gaps in our knowledge of how the technological quality of wheat is determined by the interaction between genotype and environment. We also collate information on the various storage protein alleles identified and their prevalence, which makes it possible to infer the effects of wheat selection on grain protein content. We conclude by reviewing the more recent use of transgenesis aimed at improving the quality of gluten.

Classification of natural flow regimes in the Ebro basin (Spain) by using a wide range of hydrologic parameters

Clasificación de tipos de régimenes naturales de caudales a partir de parámetros de tres componentes del régimen fluvial: magnitud, frecuencia y duración.

A Landscape-based Regionalization of Natural Flow Regimes in the Ebro River Basin and its Biological Validation. River Research and Applications

Regionalización de tipos de régimen natural de caudales en la cuenca del Ebro y validación biológica de los tipos de regímen natural.

L. Coellii Lactantii Firmiani Diuinarum Institutionum [Texto impreso] : libri Septem proxime castigati, et aucti ; eiusdem De ira Dei liber I ; De opificio Dei liber I ; Epitome in libros suos ; Phoenix ; Carmen de dominica resurrectione; item index ... Tertulliani liber apologeticus, cum indice

Copia digital: Biblioteca Valenciana, 2011

Vitae Plutarchi Cheronei [Texto impreso]

Il. xil. con escenas de la vida de los Giografiados

Reuocatio et annullatio litterarum et decretorum Gregorium XIIII et Clementis VIII... [Texto impreso]

Port. con esc. papal xil

Bem-estar no trabalho : os aspectos do suporte do supervisor e estilos de liderança

Bem-estar no trabalho, percepção de suporte do supervisor e estilos de liderança são temas que vêm despertando atenção crescente nos últimos tempos, de diversos pesquisadores no campo de estudos do comportamento organizacional. O objetivo desta pesquisa foi investigar o impacto da percepção do suporte do supervisor e dos estilos de liderança no bem-estar no trabalho. O construto bem-estar no trabalho no presente estudo foi representado por duas dimensões: satisfação no trabalho e comprometimento organizacional afetivo. A amostra foi composta por 200 trabalhadores que atuavam em empresas privadas e públicas, situadas no Estado de São Paulo, sendo 110 mulheres e 90 homens, distribuídos entre solteiros e casados. O instrumento de coleta de dados foi um questionário composto por quatro escalas que mediram as variáveis: percepção de suporte do supervisor, estilos de lideranças, satisfação no trabalho e comprometimento organizacional afetivo. Para a análise dos dados utilizou-se um programa estatístico. Foram calculadas estatísticas descritivas das variáveis do estudo (médias, desvios-padrão e correlações bivariadas) e modelos de regressão multivariada para se investigar os impactos causados por percepção do suporte do supervisor e por estilos de liderança sobre bem-estar no trabalho, representado por vínculos com o trabalho (satisfação no trabalho) e com a organização (comprometimento organizacional afetivo). Os resultados deste estudo, revelaram maiores impactos do suporte do supervisor do que de estilos de liderança sobre bem-estar no trabalho. Ao final, algumas considerações e recomendações serão feitas destacando-se a importância do bem-estar no trabalho sobre a saúde dos trabalhadores e das organizações.

Deciphering the mechanism for the assembly of aromatic polyketides by a bacterial polyketide synthase.

Aromatic polyketides are assembled by a type 11 (iterative) polyketide synthase (PKS) in bacteria. Understanding the enzymology of such enzymes should provide the information needed for the synthesis of novel polyketides through the genetic engineering of PKSs. Using a previously described cell-free system [B.S. & C.R.H. (1993) Science 262, 1535-1540], we studied a PKS enzyme whose substrate is not directly available and purified the TcmN polyketide cyclase from Streptomyces glaucescens. TcmN is a bifunctional protein that catalyzes the regiospecific cyclization of the Tcm PKS-bound linear decaketide to Tcm F2 and the 0-methylation of Tcm D3 to Tcm B3. In the absence of TcmN, the decaketide formed by the minimal PKS consisting of the TcmJKLM proteins undergoes spontaneous cyclization to form some Tcm F2 as well as SEK15 and many other aberrant shunt products. Addition of purified TcmN to a mixture of the other Tcm PKS components both restores and enhances Tcm F2 production. Interestingly, Tcm F2 but none of the aberrant products was bound tightly to the PKS. The results described support the notion that the polyketide cyclase, not the minimal PKS, dictates the regiospecificity for the cyclization of the linear polyketide intermediate. Furthermore, because the addition of TcmN to the TcmJKLM proteins results in a significant increase of the total yield of decaketide, interactions among the individual components of the Tcm PKS complex must give rise to the optimal PKS activity.

Enantioselective Michael addition of aldehydes to maleimides organocatalysed by chiral 1,2-diamines: an experimental and theoretical study

Simple and commercially available chiral 1,2-diamines were used as organocatalysts for the enantioselective conjugate addition of aldehydes, including α,α-disubstituted, to maleimides. The reaction was carried out in the presence of hexanedioic acid as an additive in aqueous solvents at room temperature. By employing (1S,2S)- and (1R,2R)-cyclohexane-1,2-diamine as organocatalysts, the corresponding Michael adducts bearing new stereocenters were obtained in high or quantitative yields with enantioselectivities of up to 92%, whereas the use of (1S,2S)-1,2-diphenylethane-1,2-diamine gave a much lower ee. Theoretical calculations were used to justify the observed sense of the stereoinduction.

Experiencias en la tutorización de enseñanzas técnicas

El PAT en la Escuela Politécnica está abierto a todos aquellos tutores que deseen formar parte del plan y también a todos los alumnos, que, voluntariamente pueden marcar la opción de participar en el plan en la matrícula, y también a aquellos que, a pesar de no marcar la opción en la matrícula, finalmente han decidido seguir el plan de acción tutorial. Esta característica de participación e inscripción voluntaria permite que el trabajo se realice más satisfactoriamente tanto por parte de tutores como por parte de los alumnos, puesto que han decidido seguir el plan por ello mismos y no como una imposición. Con este trabajo nos proponemos presentar nuestras experiencias en el desarrollo de la tutorización de nuestros estudiantes así como la evolución en el desarrollo de la tutorización por pares.

A Simple RVoG Test for PolInSAR Data

In this paper, we present a simple algorithm for assessing the validity of the RVoG model for PolInSAR-based inversion techniques. This approach makes use of two important features characterizing a homogeneous random volume over a ground surface, i.e., the independence on polarization states of wave propagation through the volume and the structure of the polarimetric interferometric coherency matrix. These two features have led to two different methods proposed in the literature for retrieving the topographic phase within natural covers, i.e., the well-known line fitting procedure and the observation of the (1, 2) element of the polarimetric interferometric coherency matrix. We show that differences between outputs from both approaches can be interpreted in terms of the PolInSAR modeling based on the Freeman-Durden concept, and this leads to the definition of a RVoG/non-RVoG test. The algorithm is tested with both indoor and airborne data over agricultural and tropical forest areas.

Estimation of Key Dates and Stages in Rice Crops Using Dual-Polarization SAR Time Series and a Particle Filtering Approach

Information of crop phenology is essential for evaluating crop productivity. In a previous work, we determined phenological stages with remote sensing data using a dynamic system framework and an extended Kalman filter (EKF) approach. In this paper, we demonstrate that the particle filter is a more reliable method to infer any phenological stage compared to the EKF. The improvements achieved with this approach are discussed. In addition, this methodology enables the estimation of key cultivation dates, thus providing a practical product for many applications. The dates of some important stages, as the sowing date and the day when the crop reaches the panicle initiation stage, have been chosen to show the potential of this technique.