Distributed Energy Resources Parameter Monitoring in Microgrids Using Blockchain and Edge Computing

An increased share of distributed renewable energy sources requires flexible tools for providing reliable and cheap electricity. Smart meters provide information at the consumer level, which could be used as the main source for real-time energy micro-transactions, however, one of the main concerns about direct transactions is information security. Conventional electricity markets rely on centralized information exchange, nevertheless, when intra-day, distributed, electricity consumption and production exchanges are required between customers, this approach might not be enough. This paper presents a proof-of-concept for using Blockchain as a tool for managing the operational transactions in a DC microgrid. The distributed nature of this technology provides an inherently safer approach, by providing an immutable database for transaction history. One of the challenges of using this technology, however, is the required computing power at the nodes and the limited capacity available in the smart meter. To overcome these issues, the authors used a distributed computing technology,-edge computing-, where computation and storage are located closer to the customer, to improve response times by handling the required computational tasks of the Blockchain tool. This approach proved not only to be practically viable but also, offers important insights about the scalability and capabilities of the technology. © 2020 IEEE

Gastroethnobotany of Halophytes

The halophytes are a specialized group of plants among which there are some representatives that have been cultivated for millenia. Domesticated or wild lineages are also consumed as food, being chard and dates fruits a good example of it. Other species highly appreciated and consumed locally are collected from wild, like Crithmum, and form part of the traditional cuisine of various areas of the planet. Within this group, some are the object of global cultivation and are distributed by haute cuisine networks such as Salicornia, Mertensia, or Tetragonia. Finally, there are other wild halophytes that were only consumed in situations of extreme need such as famines. Generally, they have not been appreciated by the populations that collect them, such as Halosarcia, Suaeda, or Arthrocnemum. The case of Tetragonia, a species native to Australia, is very significant. The perception of the aborigines, who did not eat it, was different from that of the European settlers who did consume them and even sent their seeds to Europe for domestication and cultivation as new vegetable. Currently, the new gastronomy, sometimes based on tradition and others on experimentation itself, has incorporated into the kitchen many news halophytes and with them has developed numerous unpublished and novel recipes

Construcción del conocimiento en ciencias desde las actividades científicas escolares en las prácticas de docentes de química

El presente texto abarca aspectos relacionados con las relaciones entre conocimiento científico escolar, conocimiento práctico y conocimiento didáctico de profesores de química en formación inicial en un grupo de profesores de Colombia y Brasil. Se pretende contribuir a la reflexión y mejoras en la acción en las prácticas educativas en la enseñanza de la química

Declaración de impacto ambiental del prospecto minero metálico Nueva Santa Rita, para su exploración

Esta proposición retrata la declaración del impacto ambiental del prospecto minero metálico Nueva Santa Rita, para la explotación. La estrategia de la investigación utilizada es descriptiva, porque se basa en la observación de las partes que componen el proyecto. El tipo de investigación es aplicativa o tecnológica, ya que se trata de la utilización de la información de forma práctica, para aplicarla a los objetivos de la investigación

Medicinal Plants in Traditional Herbal Wines and Liquors in the East of Spain and the Balearic Islands

Homemade herbal preparations from the East of Spain are the witness of traditional medicine inherited from the ancient complex formulas of herbal teas and medicinal wines. In this study, we document the use of traditional alcoholic beverages, identify their ingredients, almost exclusively botanical, record the local medicinal uses of these mixtures, and discuss patterns of distribution of this knowledge in regions of eastern Spain, the Balearic Islands and Andorra. We determine marker species and relevant patterns of herbal formulas in the different regions of the territory. Homemade liquors and liqueurs are consumed for their digestive and tonic-restorative properties but they also play in some cases an important social role. The elderly remember other medicinal uses such as aperitif, emmenagogue, or antidiarrheal, for some of the most popular preparations. The herbal liqueur formulas include predominantly Lamiaceae, Asteraceae, Rosaceae, Rutaceae, and Apiaceae species. Herbs (58%), fruits (28%), and mixtures of both (12%) are ingredients of liquors and wines, being the aerial parts the most frequent in terms of species (30%) and records (49%). Dictamnus hispanicus, Santolina villosa, Salvia blancoana subsp. mariolensis, Rosmarinus officinalis, Thymus vulgaris, and Clinopodium serpyllifolium subsp. fruticosum are the species most frequently used. Others species used to a lesser extent as Polygonatum odoratum, Thymus moroderi, and Saxifraga longifolia are restricted to locally homemade preparations because their collection and uses require special knowledge of the rare or endemic flora. Sustainability of these practices is strongly limited by the overall loss of local traditional knowledge and by the limited availability of most of the wild species; some of them are endangered or threatened mainly by the loss of their natural habitats. Cultivation and domestication are a promising alternative to collecting from wild populations. The cultivation of Thymus moroderi in the province of Alicante and Polygonatum odoratum in the province of Teruel are good examples. There is a notable decrease in the complexity of the formulas registered throughout the nearly 15 years of the study. This is interpreted as a consequence of a loss of knowledge, less accessibility to wild resources, and changes in traditions and preferences

Technology management to increase the efficiency of the supply chain

This article is an effort to determine the status and contribution of technology management as an integral part of the supply chain, In the present article it starts from the premise that, the technology management system is an integral part of the supply chain; To corroborate the hypothesis, a field study was carried out in the city of Barranquilla, Colombia, aimed at medium-sized service, commercial and industrial companies, in order to diagnose the management of technological processes related to identify how technological management processes related to the supply chain are carried out and Logistic processes in these organizations. One of the conclusions reached in the study is that although the majority of participating companies currently use the technology management, this is not effective, since some activities in the supply chain are outside of its scope which prevents a true control and traceability of the products and services offered by companies

Participación del servicio de RI en el diagnóstico y tratamiento del TEP

Descripción retrospectiva de la patología del TEP que ha sido atendida en el Hospital Clínico Universitario de Zaragoza entre los años 2010-2014, analizando la participación del servicio de RI y su correlación con la mortalidad en estos pacientes

Mania as Debut of Cushing's Syndrome

This is a case of a patient affected by Cushing syndrome that was admitted at the hospital due to hormonal problems. He had presented psychiatric symptoms that were mistakenly considered not directly connected to the pathology causing the clinical condition, but a mere psychological reaction to it

Aula Touch Game: Digital Tablets and Their Incidence in the Development of Citizen Competences of Middle Education Students in the District of Barranquilla-Colombia

Citizen competences are considered as a fundamental aspect in the social development of man with his environment, which allows him to carry out actions that are articulated with the different guidelines established by law, which leads the citizen to live in a coherent and peaceful way in a nation that tends for freedom of thought framed in a democratic society. That is why it is considered of high importance that in educational establishments there are spaces that tend for training in peaceful coexistence framed in the law of the educated. This article resulted from the research project: “Social Appropriation of citizen and mathematical competences making use of MIDTablets”, in which the mediation of Information and Communication Technologies is proposed to support the training of citizens with competences citizens who ensure adequate behavior in society. This project was developed in 31 educational institutions in the district of Barranquilla-Colombia, with support from resources of both the Ministry of Information Technology and Communications (MinTic), and the Secretariat of District Education of Barranquilla, in compliance with national goals, departmental and district regarding the quality of education of the national populatio

2,4-Diphenyl-6-trifluoro­methyl-2,3-dihydro-1H,5H-pyrrolo­[3,4-c]pyrrole-1,3-dione

The asymmetric unit of the title compound, C19H11F3N2O2, contains two crystallographically unique mol­ecules which differ in the rotation of a phenyl ring and a –CF3 substituent. The dihedral angles involving the pyrrole ring and the attached phenyl ring are 62.82 (8) and 71.54 (7)° in the two molecules. The difference in the rotation of the CF3 groups with respect to the pyrrolo rings to which they are attached is 23.5(1)°. For one mol­ecule, there is a close contact between an H atom and the centroid of the phenyl ring of an adjacent mol­ecule (2.572 Å). A similar contact is lacking in the second mol­ecule. In the crystal, N—H⋯O inter­actions connect adjacent mol­ecules into a chain normal to (01). Crystallographically unique mol­ecules alternate along the hydrogen-bonded chains