Exercicios literarios de los caballeros porcionistas del Real Colegio de San Telmo de Sevilla, que principaran el dia 27 de Febrero de este año de 1806, con asistencia de sus catedraticos y maestros y presididos por su director el capitán de fragata Don

A 109/065(14

Exercicios literarios de los caballeros porcionistas del Real Colegio de San Telmo de Sevilla, que principaran el dia 22 de Febrero de este año de 1805, con asistencia de sus catedraticos y maestros y presididos por su director el capitán de fragata Don

A 109/065(12

Comparison of power converter models with losses for hardware-in-the-loop using different numerical formats

Nowadays, the Hardware-In-the-Loop (HIL) technique is widely used to test different power electronic converters. These real-time simulations require processing large data at high speed, which makes this application very suitable for FPGAs (Field Programmable Gate Array) as they are capable of parallel processing. This paper provides an analytical discussion on three HIL models for a full-bridge converter. The three models use different possible numerical formats, namely float and fixed-point, the latter with and without optimizing the width of signals to the embedded DSP (Digital Signal Processors) blocks of the FPGA. The optimized fixed-point model (OFPM) uses three and two times fewer DSP blocks or LUTs (Look Up Tables), and the maximum achievable clock frequency is also up to 35 % and 25 % higher than the float model and non-optimized fixed-point model (nOFPM), respectively. Furthermore, the models’ accuracy is proportional to the clock frequency, thus the OFPM is also the most accurate model. Finally, the paper shows the differences in the simulation when the models include or not losses, proving that not including losses leads to high errors, especially during transientsThis research was funded by Spanish Ministerio de Economía y Competitividad grant number TEC2013-43017-

Exercicios literarios de los alumnos del Real Colegio de San Telmo de Sevilla, que principiaran el dia 20 de Febrero de este año de 1804, con asistencia de sus catedraticos y maestros y presididos por su director el capitán de fragata Don Adrian Maria G

A 109/065(11

Exercicios literarios de los alumnos del Real Colegio de San Telmo de Sevilla, que principaran el dia 25 de Febrero de este año de 1806, con asistencia de sus catedraticos y maestros y presididos por su director el capitán de fragata Don Adrian Maria Ga

A 109/065(13

Effect of PPG-PEG-PPG on the Tocopherol-Controlled Release from Films Intended for Food-Packaging Applications

The feasibility of novel controlled release systems for the delivery of active substances from films intended for food packaging was investigated. Because polyolefins are used highly for food-packaging applications, the reported high retention degree of antioxidants has limited their use for active packaging. Thus, in this study, PP films modified with different chain extenders have been developed to favor and control the release rates of the low molecular weight antioxidant tocopherol. The use of different chain extenders as polymer modifiers (PE-PEG <i>M</i>_w, 575; and PPG-PEG-PPG <i>M</i>_w, 2000) has caused significant changes in tocopherol-specific release properties. High-performance liquid chromatography coupled to PDA-FL and PDA-MS was used to test tocopherol and chain extender migration, respectively. The release of tocopherol from the prepared films with two chain extenders into two food simulants was studied. Different temperatures and storage times were also tested. Varying the structural features of the films with the incorporation of different levels of PPG-PEG-PPG, the release of tocopherol (food-packaging additive) into different ethanolic simulants could be clearly controlled. The effect of the temperature and storage time on the release of the antioxidant has been outstanding as their values increased. The migration of the chain extender, also tested, was well below the limits set by European legislation

Alegacion juridica en defensa de doña Maria Laura de Castro, muger que fué de D. Gaspar Garcia de Castro, en el pleyto, que ha movido D. Eusebio Ladron de Guevara, como marido de doña maria Nicolasa de Cabrera, sobre la succesion del Vinculo, que mando

A 109/105(07

Determination of Fatty Acids and Stable Carbon Isotopic Ratio in Subcutaneous Fat to Identify the Feeding Regime of Iberian Pigs

Discrimination among the types of feeding regimes for Iberian pigs is currently a highly demanded challenge by the Iberian pig sector. In the present research, discrimination among feeding regimes has been achieved by the combination of two analytical methods (based on FAMEs analysis by GC–FID and determination of δ¹³C by IRMS) previously used independently without success. In the present study, 80 samples of adipose tissue from Iberian pigs subjected to four different feedings were analyzed. The study of the variables more influenced by the feeding regime has allowed us to configure panels of markers with predictive power for the studied feedings by multivariate ROC analysis. The results provided values of specificity and sensitivity higher than 85% in most cases. The statistical combination of results from different analytical methods could be the key to develop models for the correct discrimination of Iberian pigs according to the feeding regime