19,572 research outputs found

    The politics and economics of regulatory impact assessment

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    This is the author accepted manuscript. The final version is available from the publisher via the link in this record

    Comparativo del rendimiento y calidad de nuevos cultivares de caña de azúcar (Saccharum officinarum) en la estación experimental agraria El Porvenir – Juan Guerra

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    In order to evaluate the agronomic behavior of the varieties of cane of sugar and to determine the variety or more promissory varieties with relationship to their yields and according to the conditions agrobioclimáticas of the study area, he/she was carried out the present experiment, likewise it was developed in the fields of the project cane of sugar of the E.E.A. “El Porvenir" that this located in the Km 14 of the highway Fernando Belaunde Terri, District of Juan Guerra. For such an effect the Design Blocks was used Totally at random, with 20 treatments and 4 repetitions. The results demonstrated that the treatments T2 (CP72-2086) and T20 (PCG12-745) they obtained the biggest yields with 133,72 and 130,66 t/ha, overcoming the witness T18 (H32-8560) that reached 128,94 t/ha. Likewise the treatment T5 (CP81-3058) with 339.50 cm it reached the biggest height in comparison with the other studied varieties, overcoming the witness T18 (H32-8560) that obtained 334,00 cm. on the other hand the treatment T3 (CP73-1547) with 3.15 cm he/she obtained the biggest shaft diameter, overcoming the witness T18 (H32-8560) that obtained 3,12 cm. The treatments that highlighted for the biggest entrenudos number they were the T19 (Mex73-523), T13 (CP82-1172) and T12 (CP72-1240) with 29,25, 28,84 and 27,25 knots respectively, overcoming the witness T18 (H32-8560) that reached 25.50 entrenudos. The biggest degrees brix obtained the treatments T9 (CP81-1254), T5 (CP81-3058) and T12 (CP72- 1240) with averages of 25,77, 24,43 and 24,26 degrees respectively.Con el objeto de evaluar el comportamiento agronómico de las variedades de caña de azúcar y determinar la variedad o variedades más promisorias con relación a sus rendimientos y de acuerdo a las condiciones agrobioclimáticas de la zona de estudio, se realizó el presente experimento, así mismo se desarrolló en los campos del proyecto caña de azúcar de la E.E.A.“El Porvenir “, que esta ubicado en el Km 14 de la carretera Fernando Belaunde Terri, Distrito de Juan Guerra. Para tal efecto se utilizó el Diseño Bloques Completamente al Azar, con 20 tratamientos y 4 repeticiones. Los resultados demostraron que los tratamientos T2 (CP72-2086) y T20 (PCG12-745) obtuvieron los mayores rendimientos con 133,72 y 130,66 t/ha, superando al testigo T18 (H32-8560) que alcanzó 128.94 t/ha. Así mismo el tratamiento T5 (CP81-3058) con 339,50 cm alcanzó la mayor altura en comparación con las demás variedades estudiadas, superando al testigo T18 (H32-8560) que obtuvo 334,00 cm. Por otro lado el tratamiento T3 (CP73-1547) con 3,15 cm obtuvo el mayor diámetro de tallo, superando al testigo T18 (H32-8560) que obtuvo 3,12 cm. Los tratamientos que destacaron por el mayor número de entrenudos fueron el T19 (MEX73-523), T13 (CP82-1172) y T12 (CP72-1240) con 29,25, 28,84 y 27,25 nudos respectivamente, superando al testigo T18 (H32-8560) que alcanzó 25,50 entrenudos. Los mayores grados brix obtuvieron los tratamientos T9 (CP81-1254), T5 (CP81-3058) y T12 (CP72-1240) con promedios de 25,77, 24,43 y 24,26 grados respectivamente

    Phase Distribution Efficiency of cm-Scale Ultrasonically Powered Receivers

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    In the domain of ultrasonically powered biomedical implants, there is an increasing interest in cm-scale ultrasonic receivers (RX). However, when a single-element transducer is used as the RX transducer, an uneven phase distribution across the RX area can significantly reduce the harvestable power. In this paper, we investigate the impact of lateral and angular misalignment on the acoustic field phase distribution across the RX surface. We show that, for a single-element RX transducer, lateral misalignment has minimal effect on the harvestable power, whereas even small angular misalignments can cause a considerable reduction, especially for larger RX sizes. We present a potential solution that consists of subdividing a large RX transducer (e.g. 20 × 20mm2) into smaller elements, which significantly improves power transfer efficiency by taking advantage of the smaller phase variation across the surface of each element. The trade-offs between achieving a minimum acceptable power transfer efficiency and managing the increased complexity in packaging and matching circuitry are also discussed.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic Components, Technology and MaterialsBio-Electronic

    Highly efficient laser-driven Compton gamma-ray source

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    The recent advancement of high-intensity lasers has made all-optical Compton scattering become a promising way to produce ultrashort brilliant gamma-rays in an ultra-compact system. However, so far achieved Compton gamma-ray sources are limited by low conversion efficiency and spectral intensity. Here we present a highly efficient gamma photon emitter obtained by irradiating a high-intensity laser pulse on a miniature plasma device consisting of a plasma lens and a plasma mirror. This concept exploits strong spatiotemporal laser-shaping process and high-charge electron acceleration process in the plasma lens, as well as an efficient nonlinear Compton scattering process enabled by the plasma mirror. Our full three-dimensional particle-in-cell simulations demonstrate that in this novel scheme, brilliant gamma-rays with very high conversion efficiency (higher than 10(-2)) and spectral intensity (similar to 10(9) photons/0.1%BW) can be achieved by employing currently available petawatt-class lasers with intensity of 10(21) W cm(-2). Such efficient and intense gamma-ray sources would find applications in wide-ranging areas. ©2019 The Author(s)

    Construcción y validación de una estrategia de intervención y prevención a partir de la transformación de las creencias en torno al maltrato infantil y el empoderamiento de la comunidad para la negociación de conflictos :una experiencia participativa

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    IP 1217-10-14775Incluye 1 CD.CARTILLA(S): Caminando juntos: construyendo paz en comunidad /Clemencia Ramirez Herrera ... [et al.] --;Bogotá : Universidad de San Buenaventura, 2003. -- 28 cm
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