15879 research outputs found
Sort by
The groundwater cycle
No full textEducational unit in English on the groundwater cycle, focusing on natural and artificial recharge, discharge processes, and their interaction within the hydrologic system. Includes reading comprehension with ten MCQs, pronunciation of keywords with audio, fill-in-the-blank practice, speaking discussion prompts, and two video-based activities (Darcy’s law and the water cycle) with quizzes and a class debate. Designed for integrated language and science learning
Manufacturing and prototyping
No full textThis English-language learning unit explores manufacturing and prototyping, focusing on the evolution from rapid prototyping to rapid manufacturing and the classification of RP&M processes (additive, subtractive, formative, hybrid). It integrates reading comprehension, vocabulary with pronunciation, audio glossary, cloze activities, speaking and debate prompts, a video-based watching task about ICAMP, and targeted grammar practice on “used to / be used to / get used to,” concluding with a Kahoot review
Blasthole drilling
No full textResource for English for Specific Purposes focused on blasthole drilling. It provides a concise guide to drilling methods (tophammer and COPROD), explains impact energy transfer and equipment components, and contrasts speed, precision, and economy across techniques. Learners practice reading comprehension, keyword pronunciation, vocabulary-in-context, and grammar (gerunds/infinitives; comparing/contrasting). Includes a short explanatory video on COPROD, discussion prompts, and a Kahoot review to consolidate understanding in technical mining and quarrying contexts
Mine power systems
No full textThis English-language resource introduces mine power systems, contrasting historical compressed-air power with modern electrical dominance. It reviews fundamentals of compressed-air and electrical power, components like compressors, receivers, and distribution networks, and typical air-operated machines. The unit includes reading comprehension, pronunciation practice, vocabulary activities, speaking/debate tasks, a focused watching activity on the Cat HW300 Highwall Mining System, and grammar exercises (passive voice; used to/be used to/get used to), concluding with a Kahoot review
Introduction to basics of solar panels or photovoltaics
No full textThis resource introduces the fundamentals of solar photovoltaic technology, explaining how semiconductor materials convert light into electricity and comparing major cell types: crystalline silicon, thin-film (CdTe, CIGS), perovskite, organic, quantum dot, multijunction, and CPV. It includes reading comprehension, vocabulary with pronunciations, sentence completion, speaking prompts, videos with quizzes, grammar practice on conditionals, and a Kahoot review to reinforce understanding and application
Influence of GMAW welding parameters on grain size, precipitates, and hardness in alloy 6063-T5
No full textThis article presents a study on the influence of welding parameters, such as power (W), current (A), and weld bevel spacing (mm), on the grain size of the weld bead, the size of the precipitates measured using a SEM microscope, and the hardness measured in the weld bead. The experiments were conducted using the orthogonal Taguchi methodology with an L9 design, meaning 9 experiments. The objective of the optimization is to determine the most suitable values to achieve the best mechanical properties in the welded joint. Power is the variable with the greatest weight and should be kept as low as possible. Bevel spacing is the next most significant variable, while welding speed is the variable with the least weight and should be kept as high as possible. As a practical application, this paper highlights the influence of welding parameters on precipitates and how these relate to hardness, making this a reference parameter for mechanical properties
Impact of cold chain temperature and relative humidity variability on cherry tomato shelf life: A predictive modeling approach
Full text linkFood waste is a major global issue, with fruit and vegetables accounting for a large proportion of postharvest losses. This study quantifies the impact of dynamic temperature and relative humidity (RH) conditions on postharvest quality and shelf life of cherry tomatoes. Key quality attributes (weight loss, decay, color, firmness, pH, and total soluble solids) were monitored under 14 storage scenarios simulating real cold-chain conditions: four constant temperatures (5, 8, 15, and 22 °C), eight variable temperatures, and two transportation scenarios using a controlled climate chamber. From continuous sensor records, interpretable exposure and fluctuation indicators for temperature and RH were derived and, combined with time, they were used as predictors in parsimonious multiple linear regression models, including nonlinear transformations. Our results demonstrated that higher temperatures and larger temperature/RH fluctuations accelerate quality deterioration, thus decreasing shelf life, and highlighted cumulative, irreversible quality losses driven by the dynamics of environmental conditions. A model linking softening to weight loss was also presented. The proposed indicator-based predictive framework enables estimation of quality degradation from recorded environmental histories, facilitating early identification of at-risk batches and optimizing distribution strategies to reduce food waste in the cold chain.This research was funded by the Ministry of Science, Innovation, and Universities (MICIU), with NextGenerationEU funds (PRTR-C17.I1) as part of the AGROALNEXT programme and through the FPU programme (grant number FPU23/00186). Also, it was funded by the Fundación Séneca, with funds from Comunidad Autónoma Región de Murcia (CARM) (https://fseneca.es/agroalnext/), and by the "Prueba de Concepto" programme, with code 22267PDC-23
Printed circuit boards (PCBs)
No full textIntroductory ESL-oriented unit on Printed Circuit Boards. It explains PCB purpose and composition (FR4 substrate, copper, soldermask, silkscreen), core terminology (pads, traces, vias, PTH, reflow, DRC), and typical layer structures. The resource includes reading comprehension with MCQs, pronunciation practice with audio terms, cloze activities, open discussion prompts, a pre-watching task and video about FR4 properties and defects, plus a brief grammar section on “used to / be used to / get used to,” and a Kahoot review
Graphic design
No full textThis resource is an English-language learning unit about graphic design. It includes an expository text on the evolution, principles, and purpose of graphic design; reading comprehension multiple-choice questions; pronunciation practice with phonetic transcriptions and audio term definitions; a cloze activity using key vocabulary; speaking prompts with a debate scenario; a watching activity with pre-watching questions and video-based MCQs; and grammar practice on first and second conditionals
Regenerative medicine: Pioneering the future of healing
No full textThis resource is an English-language learning unit centered on regenerative medicine and tissue engineering. It includes a core explanatory text, vocabulary with phonetic transcriptions, reading comprehension MCQs, cloze activities, speaking prompts and debate, pre-watching questions, and two embedded videos. A grammar section practices future forms within the scientific context. The unit highlights scaffolds, extracellular matrix, stem cells, growth factors, decellularized organs, applications, benefits, risks, and future impact on healthcare and personalized medicine