The continuum description with pseudo-state wave functions

Benchmark calculations are performed aiming to test the use of two different pseudo-state bases on the the Multiple Scattering expansion of the total Transition amplitude (MST) scattering framework. Calculated differential cross sections for p-6He inelastic scattering at 717 MeV/u show a good agreement between the observables calculated in the two bases. This result gives extra confidence on the pseudo-state representation of continuum states to describe inelastic/breakup scattering.Comment: 4 pages, 2 figures. Published in Physical Review

Accumulation and Decomposition Rates and N, P and K Returned to the Soil by the Litter of Tropical Legumes and Grasses

The return of plant nutrients through litter decomposition of legumes and grasses is important for the sustainability of grassland ecosystems (Sánchez et al., 1989). Therefore, the selection of species that produce high amounts of decomposable litter is important . The objective of the present work was to study the production and decomposition rates of litter from various legumes and grasses in Cuba

Validation of the Software “Recycling of Nutrients” in Dairy-Farms of Western Cuba

To maintain a good productivity in the soil-plant-animal system it is necessary to achieve an equilibrium between input and output of nutrients and energy. Models and simulation software have been proposed for this purpose. For dairy farms, models have been utilised to show the behaviour of different aspects, such as: feed utilisation, energy flow, digestibility values and daily weight gains (Freer et al., 1970; Assis & France, 1983, Bruce et al., 1984). However, there are few models showing the interaction between soil-plant- animal components of these systems. The objective of the present study was to validate the software Recycling of Nutrients proposed by Ortiz (2000) for dairy farms of western Cuba

Mapping of landslide susceptibility of coastal cliffs : the Mont-Roig del Camp case study

The weathered and fractured conglomerate cliffs of Mont Roig del Camp constitute a rock fall hazard for the surrounding pocket beaches and, therefore, for the population that frequent them, especially over the summer. Landslide susceptibility of the cliff has been assessed using the Rock Engineering System method (RES). The determinant and triggering factors considered in this study include: wave exposure, shoreline variations, cliff height, cliff slope, geotechnical quality of the rocky mass, superficial runoff and cliff orientations favoring landslides. Geographic Information Systems (GIS) have been employed to facilitate the information analysis and generate new susceptibility maps. The quality of the rock mass and cliff orientation are the most interactive factors for the stability of the cliff. However, shoreline variations and surface runoff are the most dominant factors in the system. Thus, the quality of the rock mass has been determined to be a basic variable in the cliff characterization because of its high dependence on the variations of the remaining factors. The landslide susceptibility map depicts a predominance of surfaces with moderate degrees of susceptibility concentrated mainly in the headlands, where the combined actions of subaerial and marine processes control the weathering and eroding processes. Therefore, the landslide susceptibility assessment based on this methodology has allowed the identification of hazardous areas that should be considered in future management plans

Recovery of the MOSFET and circuit functionality after the dielectric breakdown of ultra-thin high-k gate stacks

The reversibility of the gate dielectric breakdown in ultra-thin high-k dielectric stacks is reported and analyzed. The electrical performance of MOSFETs after the dielectric recovery is modeled and introduced in a circuit simulator. The simulation of several digital circuits shows that their functionality can be restored after the BD recovery

Probing 6He structure from proton inelastic collisions

We explore the Hyperspherical Harmonics pseudostate method to describe the 6He continuum. The method is use it within the multiple scattering of the transition amplitude (MST) approach to study inelastic scattering of p-6He at 700 MeV/u.Fundaçao para a Ciência e Tecnologia (FCT) POCTI/FNU/43421/200

Multiqubit time-varying quantum channels for NISQ-era superconducting quantum processors

Time-varying quantum channels (TVQCs) have been proposed as a model to include fluctuations of the relaxation (T1) and dephasing times (T2). In previous works, realizations of multiqubit TVQCs have been assumed to be equal for all the qubits of an error correction block, implying that the random variables that describe the fluctuations of T1 and T2 are block-to-block uncorrelated but qubit-wise perfectly correlated for the same block. In this article, we perform a correlation analysis of the fluctuations of the relaxation times of five multiqubit quantum processors. Our results show that it is reasonable to assume that the fluctuations of the relaxation and dephasing times of superconducting qubits are local to each of the qubits of the system. Based on these results, we discuss the multiqubit TVQCs when the fluctuations of the decoherence parameters for an error correction block are qubit-wise uncorrelated (as well as from block-to-block), a scenario we have named the fast time-varying quantum channel (FTVQC). Furthermore, we lower-bound the quantum capacity of general FTVQCs based on a quantity we refer to as the ergodic quantum capacity. Finally, we use numerical simulations to study the performance of quantum error correction codes when they operate over FTVQCs.This work was supported by the Spanish Ministry of Econ-omy and Competitiveness through the ADELE project (Grant No. PID2019-104958RB-C44), by the Spanish Ministry of Science and Innovation through the proyect. Few-qubit quantum hardware, algorithms and codes, on photonic and solid-state systems (PLEC2021-008251), by the Diputación Foral de Gipuzkoa through the DECALOQC Project No. E 190 / 2021 (ES), by the Ministry of Economic Affairs and Digital Transformation of the Spanish Government through the QUANTUM ENIA project call - QUANTUM SPAIN project, and by the European Union through the Recov-ery, Transformation and Resilience Plan - NextGenerationEU within the framework of the Digital Spain 2025 Agenda. This work was funded in part by NSF Award No. CCF-2007689. This work was partly funded by the Spanish Ministry of Economy and Competitiveness through the MADDIE project (Grants No. PID2022-137099NB-C41 and No. PID2022- 137099NB-C44).Peer ReviewedPostprint (published version

Discovering the Legacy of Hispanic/Spanish and South American Landscapes through Geohistorical Sources: The Geographical and Topographical Relations of Philip II

Landscapes have history and memory, which are eloquent generators of testimonies and traces on the processes of the landscape that take place today, and that will take place in the future. In recent years, numerous methods of analysing land and landscape patterns have been developed and evaluated, based on the multiplicity of these type of geographic and historical data sources, which have developed the concept of the geohistorical source. The goal of these sources of information allows us to historically reconstruct landscapes. With this in mind, the basic objective of the present research is to approach a geohistorical source with a wide spatial spectrum in Europe and America: the geographical and topographical relations of Philip II. This source has been chosen for the quality, quantity, variety and systematization of the data it provides on the territory and landscape of the crown of Castile. In addition, it ended up being the model of how to obtain organized and homogeneous knowledge of a large spatial area, considering the geographical, anthropological and historical data of the different territories. This geohistorical source is reliable, because the local authorities, both secular and ecclesiastical, are questioned, as they are the ones who inhabit, use, and, at different levels, govern the territory and its people

Metodología de investigación de Rocas Ornamentales: Granitos.

Durante la realización del proyecto del IGME ·Potencial Básico de Granitos y Neises Ornamentales en Castilla y León se desarrolló una metodología sistemática de investigación de granitos para uso ornamental que, por su versatilidad, puede hacerse extensible, en sus aspectos más generales, a otros tipos de rocas ornamentales e, incluso, rocas industriales en general. Para ello, se desarrollan una serle de fases de trabajo que comprenden: recogida de información, exploración de campo a escalas 1 :50.000, 1 :25.000 y 1: 10.000, valoración de áreas y elección de puntos canterables, todo ello mediante la cuantificación de todos los parámetros y valores que han de tenerse en cuenta en la investigación de rocas ornamentales, que nos permiten dar un tratamiento objetivo a todas las áreas estudiadas