Up, Up, and Away

pages 96-10

Acquisitions Up, Up, And Away

Abstract Unavailabl

Acquisitions, up, up and away: Yale University?s new acquisitions department

Journal ArticleAs of July 15, 1991 Yale University's Sterling Memorial Library began reconstituting an acquisition's department under Technical Services. In these days of bad news about closing departments, budget cuts and escalating serial prices, it's nice to be able to report some good news

Rural Towns Don't Have to Dry Up and Blow Away

Agricultural and Food Policy,

Teaching With Technology: Up, Up and Away With Parachutes in Primary Mathematics

In a teacher education institution just north of Sydney, a lecturer asked her students about their most vivid memories of learning about mathematics in their primary school years. By far, the most easily recalled positive experiences of mathematics involved some form of physical activity or the use of hands-on resources: One day the teacher organised for us to have a pizza party. The pizzas were divided into even pieces and we learned about fractions. I loved the way my teacher got us to use the things she found around her house in the classroom - . She\u27d bring them into our class and we\u27d use them in maths activities. We did cooking in our primary school class. I\u27m not sure if it was meant to be a maths lesson or not but we learned how to measure, how to cut up food into parts and how to estimate amounts. We did maths activities with parachutes. I really enjoyed that. We were all running around, laughing, counting and just doing maths

Up and away: ontogenic transference as a pathway for aerial dispersal of microplastics

Microplastics (MPs) are ubiquitous pollutants found in marine, freshwater and terrestrial ecosystems. With so many MPs in aquatic systems it is inevitable that they will be ingested by aquatic organisms, and be transferred up through the food chain. However, to date, no study has considered whether MPs can be transmitted by means of ontogenic transference i.e. between life stages that utilise different habitats. Here, we determine whether fluorescent polystyrene beads could transfer between Culex mosquito life stages and, particularly, could move into the flying adult stage. We show for the first time that MPs can be transferred ontogenically from a feeding (larva) into a non-feeding (pupa) life stage and subsequently into the adult terrestrial life stage. However, transference is dependent on particle size, with smaller 2 µm MPs transferring readily into pupae and adult stages, whilst 15 µm MPs transferred at a significantly reduced rate. Microplastics appear to accumulate in the Malpighian tubule renal excretion system. The transfer of MPs to the adults represents a potential aerial pathway to contamination of new environments. Thus, any organism that feeds on terrestrial life phases of freshwater insects could be impacted by MPs found in aquatic ecosystems