198,574 research outputs found
Teaching Global Citizenship: A Canadian Perspective, Lloyd Kornelsen, Geraldine Balzer and Karen M. Magro (Eds) (2020)
No full textReview of: Teaching Global Citizenship: A Canadian Perspective, Lloyd Kornelsen, Geraldine Balzer and Karen M. Magro (Eds) (2020) Toronto and Vancouver: Canadian Scholars’ Press, 228 pp., ISBN 978-1-77338-198-5, p/bk, £34.55 © 2023 Intellect Lt
Bare iron oxide nanoparticles: Surface tunability for biomedical, sensing and environmental applications
No full textSurface modification is widely assumed as a mandatory prerequisite for the real applicability of iron oxide nanoparticles. This is aimed to endow prolonged stability, electrolyte and pH tolerance as well as a desired specific surface chemistry for further functionalization to these materials. Nevertheless, coating processes have negative consequences on the sustainability of nanomaterial production contributing to high costs, heavy environmental impact and difficult scalability. In this view, bare iron oxide nanoparticles (BIONs) are arousing an increasing interest and the properties and advantages of pristine surface chemistry of iron oxide are becoming popular among the scientific community. In the authors' knowledge, rare efforts were dedicated to the use of BIONs in biomedicine, biotechnology, food industry and environmental remediation. Furthermore, literature lacks examples highlighting the potential of BIONs as platforms for the creation of more complex nanostructured architectures, and emerging properties achievable by the direct manipulation of pristine iron oxide surfaces have been little studied. Based on authors' background on BIONs, the present review is aimed at providing hints on the future expansion of these nanomaterials emphasizing the opportunities achievable by tuning their pristine surfaces
Indagini archeologiche e topografiche nella villa romana di contrada Castellito di Ramacca (Catania). Risultati preliminari delle ricerche 2019/2020
No full textL'articolo presenta i risultati preliminari della ricerca archeologica avviata nella villa romana di contrada Castellito, ampia area che si estende nel settore nord orientale del territorio di Ramacca (Catania, Sicilia orientale). Il sito costituisce uno dei pochi contesti riconducibili a una ricca residenza di età imperale situata nei margini occidentali della Piana di Catania. La villa occupa la sommità di un basso poggio (106 m slm) situato nei pressi del fiume Dittaino, che scorre immediatamente a est; a nord, ai piedi di un’altra collina, era stata in passato segnalata la presenza di tombe a fossa rivestite di scaglie di pietra, probabilmente pertinenti a una necropoli coeva alla villa romana; le ricognizioni recentemente condotte nell’area non hanno consentito, tuttavia, di identificare le sepolture, probabilmente obliterate dalla coltivazione di una cava di calcarenite avviata nell’area negli ultimi decenni. L'articolo fornisce una dettagliata relazione sullo stato dei mosaici e delle strutture, analizzando il sito nel suo contesto topografico
Considerations with Determining the Minimum Number of Volumetric Water Content Measurements for Turfgrass Root Zones
No full textWater is considered the most important natural resource utilized on managed amenity grasslands, and water conservation is an integral part of an overall program in environmental stewardship and best management practices. Measuring and monitoring the soil water content of turfgrass root zones has become an important and routinely accepted practice of golf courses and sports pitches. In recent years, portable hand-held soil moisture meters or sensors have become commercially available and affordable, and therefore have become a valuable and often relied-upon tool for the turfgrass industry practitioner. To maximize or optimize the time and resources needed to measure the root zone volumetric water content of a turf site, a field experiment was conducted to determine the minimum number of soil moisture readings needed per 93 m(2) of a sand-based root zone. Of note, 93 m(2) is equivalent to 1000 ft(2), which is the common form of area measurement utilized by the turfgrass industry in the USA. The standard error of the mean calculated from sampling data revealed that three to four measurements per 93 m(2) were the minimum number required. Soil moisture meters should be utilized in a structured, purposeful, and site-specific manner along with traditional soil moisture evaluation methods of diligent scouting for visual signs of turfgrass wilt and drought stress, as well as examining soil root zone cores, to support prudent irrigation water management practices. Knowledge of the soil moisture status will support best practices for water conservation and environmental stewardship while optimizing turfgrass quality, function, and performance
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