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13. Clinical guide of the Spanish Society of Nephrology on the prevention and treatment of peritoneal infection in peritoneal dialysis

Author

Pérez Fontán, Miguel, Moreiras Plaza, Mercedes, Prieto Velasco, Mario, Quereda Rodriguez-Navarro, Carlos, Bajo Rubio, María Auxiliadora, Borràs Sans, Mercè, de la Espada Piña, Verónica, Pérez Contreras, Javier, del Peso Gilsanz, Gloria, Ponz Clemente, Esther, Quirós Ganga, Pedro, Remón Rodríguez, César, Rodríguez-Carmona, Ana, Sánchez Alvarez, Emilio, Vega Díaz, Nicanor, Vera Rivera, Manel, Aresté Fosalba, Nuria, Bordes Benítez, Ana, Castro Notario, María José, Fernández Perpén, Antonio, Fernández Reyes, María José, Gasch Blasi, Oriol, Gil Cunquero, José Manuel, Julián Mauro, Juan Carlos, Minguela Pesquera, José Ignacio, Munar Vila, María Antonia, Núñez del Moral, Miguel, Pérez López, Teresa, Portolés Pérez, Jose, Rivera Gorrín, Maite, Rodríguez Suarez, Carmen, Sánchez Camargo, Mario, and Soriano Cabrer, María Sagrario

Published
2022
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18. Low-Cost 3D Models for Cervical Spine Tumor Removal Training for Neurosurgery Residents.

Author

Sufianov, Albert, Ovalle, Carlos Salvador, Cruz, Omar, Contreras, Javier, Begagić, Emir, Kannan, Siddarth, Rosario Rosario, Andreina, Chmutin, Gennady, Askatovna, Garifullina Nargiza, Lafuente, Jesus, Sanchez, Jose Soriano, Nurmukhametov, Renat, Soto García, Manuel Eduardo, Peev, Nikolay, Pojskić, Mirza, Reyes-Soto, Gervith, Bozkurt, Ismail, and Encarnación Ramírez, Manuel De Jesus

Subjects
CERVICAL vertebrae, RADICULOPATHY, SPINAL cord tumors, SPINAL surgery, LAMINECTOMY, TUMOR surgery, TUMORS
Abstract

Background and Objectives: Spinal surgery, particularly for cervical pathologies such as myelopathy and radiculopathy, requires a blend of theoretical knowledge and practical skill. The complexity of these conditions, often necessitating surgical intervention, underscores the need for intricate understanding and precision in execution. Advancements in neurosurgical training, especially with the use of low-cost 3D models for simulating cervical spine tumor removal, are revolutionizing this field. These models provide the realistic and hands-on experience crucial for mastering complex neurosurgical techniques, filling gaps left by traditional educational methods. Materials and Methods: This study aimed to assess the effectiveness of 3D-printed cervical vertebrae models in enhancing surgical skills, focusing on tumor removal, and involving 20 young neurosurgery residents. These models, featuring silicone materials to simulate the spinal cord and tumor tissues, provided a realistic training experience. The training protocol included a laminectomy, dural incision, and tumor resection, using a range of microsurgical tools, focusing on steps usually performed by senior surgeons. Results: The training program received high satisfaction rates, with 85% of participants extremely satisfied and 15% satisfied. The 3D models were deemed very realistic by 85% of participants, effectively replicating real-life scenarios. A total of 80% found that the simulated pathologies were varied and accurate, and 90% appreciated the models' accurate tactile feedback. The training was extremely useful for 85% of the participants in developing surgical skills, with significant post-training confidence boosts and a strong willingness to recommend the program to peers. Conclusions: Continuing laboratory training for residents is crucial. Our model offers essential, accessible training for all hospitals, regardless of their resources, promising improved surgical quality and patient outcomes across various pathologies. [ABSTRACT FROM AUTHOR]

Published
2024
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19. Reduced Root Volume at Establishment, Canopy Growth and Fruit Production in 'Lapins'/'Colt' and 'Regina'/'Gisela 12' Sweet Cherry Trees.

Author

Yuri, José Antonio, Simeone, Daniela, Fuentes, Mauricio, Sepúlveda, Álvaro, Palma, Miguel, Moya, Mariana, and Sánchez-Contreras, Javier

Subjects
CHERRIES, SWEET cherry, ORCHARDS, FRUIT, PLANT nurseries, PLANT roots
Abstract

The success of establishing fruit orchards has traditionally been attributed to the vigor of the nursery plant used. This study aimed to evaluate the post-transplant survival, canopy growth and fruit productivity of two sweet cherry (Prunus avium L.) cultivars ('Lapins'/'Colt' and 'Regina'/'Gisela 12') with different radicular basal volumes of 100%, 50% and 25% and nursery plant types: (i) bare root (BR) or (ii) bagged (B). The initial stem diameter of the plants ranged from 12 to 19 mm, and their height ranged from 1.4 to 1.8 m. Plants grafted onto 'Colt' rootstock exhibited twice the initial root volume compared to those grafted onto 'Gisela 12'. Evaluations were carried out in three commercial orchards during three seasons in the Central Valley of Chile. The results indicated that root volume and nursery type did not affect plant survival and productivity. For 'Regina'/'Gisela 12', only the bag treatment resulted in less trunk cross-sectional area (TCSA) and shoot length, and for 'Lapins'/'Colt', the BR25 treatment showed a lower initial TCSA than other treatments, although without a negative effect on yield. Hence, the presumption about the influence of root volume and plant type on the successful establishment of a sweet cherry on 'Colt' and 'Gisela 12' rootstock can be discarded. The survival, growth and precocity of the orchard depend more on post-planting conditions and water management than on the number or type of nursery plant roots. It is important to prioritize proper post-planting care and water management for optimal orchard health. [ABSTRACT FROM AUTHOR]

Published
2024
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25. Distributed Power Generation Scheduling, Modelling and Expansion Planning.

Author

Contreras, Javier, Contreras, Javier, and Muñoz-Delgado, Gregorio

Subjects
Technology: general issues, 5G, Benders' decomposition, IEC 61850, LoRa, MILP optimization, active power management, allocation, arbitrage, battery degradation, combined economic emission dispatch, distributed energy resources, distributed generation planning (DGP), distributed hierarchical strategy, distribution network planning, distribution networks, distribution system operators, dynamic economic dispatch, electric vehicles, electric vehicles aggregator, electricity markets, emission constraints, energy curtailment, energy management system, energy storage system, energy storages, environment-based demand response, flexibility, frequency control, isolated AC/DC hybrid microgrid, local services, mathematical programming, micro-grid, multi-agent system, multi-objective optimization, optimal location, penalty factor, renewable energy sources, renewable energy sources (RES), risk assessment, small scale distributed generation, stochastic programming, system modeling, system services, two-layer consensus method, two-stage stochastic mixed-integer linear programming (MILP), weighting update artificial bee colony
Abstract

Summary: Distributed generation is becoming more important in electrical power systems due to the decentralization of energy production. Within this new paradigm, new approaches for the operation and planning of distributed power generation are yet to be explored. This book deals with distributed energy resources, such as renewable-based distributed generators and energy storage units, among others, considering their operation, scheduling, and planning. Moreover, other interesting aspects such as demand response, electric vehicles, aggregators, and microgrid are also analyzed. All these aspects constitute a new paradigm that is explored in this Special Issue.

27. Guest Editorial: EV charging impacts on power system.

Author

Pourakbari Kasmaei, Mahdi, Hatziargyriou, Nikos, Roberto Sanches Mantovani, José, Fotuhi‐Firuzabad, Mahmud, and Contreras, Javier

Subjects
ELECTRIC vehicle charging stations, ELECTRIC utilities, ELECTRIC power distribution, REINFORCEMENT learning, SMART power grids, DEEP reinforcement learning, ELECTRIC transients
Abstract

This article explores the impact of electric vehicle (EV) charging on power systems and emphasizes the importance of careful analysis and planning. It discusses various topics related to EV charging, including EV hosting capacity, optimal placement of EVs and charging stations, technical impacts of Vehicle-to-Grid (V2G) technology, shared vehicle rental, decentralised collaboration frameworks, intelligent energy management schemes, EV demand response, and optimal sizing and siting of public EV charging stations. The article provides valuable insights and solutions for utilities, academia, and policymakers to address the challenges and opportunities associated with EV charging. Additionally, the article introduces a new approach for determining the limits of transformers and overhead lines in relation to EV charging, using Monte Carlo simulations and proposing new parameters for evaluating maximum demands. The authors stress the need for further analysis and attention to the impact of EVs on power systems. [Extracted from the article]

Published
2024
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34. Determinants of the Efficiency of Electricity Generation in Latin America and Caribbean Countries Using a Cragg's Regression Model.

Author

Cuadros, Sebastian, Rodríguez, Yeny E., and Contreras, Javier

Subjects
ELECTRIC power production, REGRESSION analysis, DATA envelopment analysis
Abstract

Measuring and understanding the evolution of the electricity generation efficiency sector is a relevant task for policymakers. This study focuses on assessing the determinants of electricity generation efficiency across 24 countries in Latin America and the Caribbean between 2000 and 2020. A hurdle model was employed to account for the censored nature of the dependent variable. The findings show a positive impact of opening up the electricity sector in fully efficient countries. Market liberalization and the involvement of privately owned power plants contribute to efficiency gains in inefficient countries. Additionally, the tariff protectionism level exhibits positive effects for completely efficient and inefficient countries. These results provide valuable insights, as less-efficient countries can glean strategies from their more efficient counterparts to enhance their electricity generation efficiency. [ABSTRACT FROM AUTHOR]

Published
2023
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36. Rediscovering the value of families for psychiatric genetics research

Author

Glahn, David C., Nimgaonkar, Vishwajit L., Raventós, Henriette, Contreras, Javier, McIntosh, Andrew M., Thomson, Pippa A., Jablensky, Assen, McCarthy, Nina S., Charlesworth, Jac C., Blackburn, Nicholas B., Peralta, Juan Manuel, Knowles, Emma E. M., Mathias, Samuel R., Ament, Seth A., McMahon, Francis J., Gur, Ruben C., Bucan, Maja, Curran, Joanne E., Almasy, Laura, Gur, Raquel E., and Blangero, John

Published
2019
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