Encontrados 16 documentos, a visualizar página 1 de 2
Estimation of evaporation in Andalusian reservoirs: proposal of an index for th...
García-López, Santiago; Salazar-Rojas, Marcia; Vélez-Nicolás, Mercedes; Isidoro, Jorge; Ruiz-Ortiz, VerónicaStudy region: This study focuses on Andalusia (Southern Spain), a mediterranean region of 87,270 km2. Andalusia experiences significant water stress, making effective water management crucial. Study focus: Evaporation is a key element of the water budget, particularly in arid and semi-arid climates, where losses from reservoirs represent a significant fraction of the volume annually regulated and compromise the...
Monitoring soil conservation techniques via UAV for sustainable production of i...
Sousa, Lizandra de Barros de; Montenegro, Abelardo Antônio de Assunção; Isidoro, Jorge; Silva, Thieres George Freire da; Almeida, Thayná Alice BritoContext: Sustainable agricultural production in semiarid regions is limited by water scarcity and soil degradation. Forage cactus (Opuntia stricta) has high drought tolerance but requires effective water and soil management to maximize yield. Objective: To evaluate the effects of mulching and intercropping with gliricidia and moringa, under treated wastewater irrigation, on forage cactus productivity and soil p...
Assessment of climate change impacts on rainfall and streamflow in the Alto Par...
Hucke, André Teixeira da Silva; Menegaz, Mateus Nardini; Isidoro, Jorge; Tiezzi, Rafael de OliveiraClimate change has the potential to fundamentally transform landscapes on a global scale. Leveraging advanced predictive modeling to enhance water resource management within the Alto Paranapanema Basin (Brazil), holds the potential to proactively anticipate challenges and alleviate the impacts and conflicts arising from this phenomenon. This is particularly important in a region boasting over 1,600 center-pivot...
Characterization of artificial rainfall produced by a portable rainfall simulat...
Costa, Antônio Reynaldo de Sousa; Alvarenga, Lívia Alves; Thebaldi, Michael Silveira; Lima, Luiz Antonio; Colombo, Alberto; Green, DanielRainfall properties and drop spectra characterization is essential when designing and using rainfall simulators to properly replicate natural rainfall characteristics. This study considered a small-scale rainfall simulator operating under varying nozzle, pressure and rotating disc scenarios. A dynamic rainfall gauge system developed at the Federal University of Lavras was used to quantify the impact velocity of...
A multimethod interpolation approach for mapping the spatial distribution of ra...
Ruiz-Ortiz, Verónica; Maria Neto Paixão Vazquez Fernandez Martins, Helena; Granja Martins, Fernando Miguel; Vélez-Nicolás, Mercedes; Isidoro, JorgeEight spatial interpolation models were used to map the spatial distribution of precipitation in the southwestern sector of the Iberian Peninsula (22330 km2) over 40 years (1980/1981-2019/2020). Rainfall data from 103 meteorological stations were used to generate the interpolation models, namely inverse distance weight (IDW) with 6, 12 and 24 points, regression spline (RS), thin spline (TS), universal kriging w...
High spatiotemporal resolution free surface detection using cost-effective vide...
Martins, Ricardo; Isidoro, Jorge; Lima, João L. M. P. deThe identification of the air-water interface in free surface flows traditionally involves intrusive techniques or costly equipment. Non-intrusive alternatives, such as computer vision, are emerging as highly effective substitutes or supplements for more invasive techniques in laboratory measurements, thanks to their straightforward implementation and cost efficiency. This research specifically delves in the co...
Portable rainfall simulator: evaluation and suitability of plot geometry to imp...
Costa, Antônio Reynaldo de Sousa; Alvarenga, Lívia Alves; Thebaldi, Michael Silveira; Melo, Pâmela Aparecida; Colombo, Alberto; Isidoro, JorgeOs simuladores de chuva são uma importante ferramenta para várias áreas das geociências. Os autores da maioria dos estudos publicados com simuladores de chuva tentam conseguir uma distribuição da precipitação o mais uniforme possível. Contudo, sendo tal muito difícil, são utilizados índices que visam aferir a maior ou menor uniformidade da precipitação na área da parcela em estudo. Um dos mais utilizados é o co...
The fulfilled promise: a green way for seawater desalination through reverse os...
Barraza Soto, Joel; López Ramirez, Juan Antonio; Merino, Germán E.; Basulto Millar, Carlos; Morales, Macarena; Martinez, Matías; Miranda-Godoy, BrayanReverse osmosis (RO) is a widely used technology for producing drinking water from seawater. The energy needed for RO water treatment has decreased, but energy costs remain a challenge, especially in communities where drinking water consumption is far from seawater. This study explores the best RO configuration for energy efficiency in scenarios where solar and gravity energy are available. A case study is pres...
Design and characterisation of customised-roughness beds for open-channel flow ...
Isidoro, Jorge; Martins, Ricardo; Pereira, Luísa Gomes; de Lima, João L.M.P.The use of laboratory channels or flumes for open-channel flow research is widespread. However, this type of equipment is often expensive, susceptible to damage, and require regular maintenance. In open-channel flow, the roughness of the channel bed is a critical property in governing the flow characteristics. Unfortunately, changing the bed properties, particularly its roughness, proves to be a challenging and...
Fluorescent quinine-based tracking techniques for measurement of open-channel s...
Zehsaz, Soheil; L. M. P. de Lima, João; Isidoro, Jorge; de Lima, M. Isabel P.; Martins, RicardoThis study presents techniques based on the use of fluorescent quinine as a visual tracer for surface flows, to assess surface flow velocities in channels and streams under low luminosity conditions. Fieldwork was conducted in three open channels, with different hydraulic characteristics. A quinine solution, in both liquid and solid (ice cube) forms, was applied on the water flow surface and an Unmanned Aerial ...