We collected indoor air, surface wipes (floors, table tops, and window sills), and floor dust samples at multiple locations within 11 occupied and two unoccupied homes both before and after lawn application of the herbicide 2,4-D. We measured residues 1 week before and after application. We used collected samples to determine transport routes of 2,4-D from the lawn into the homes, its subsequen...

Sources and mechanisms of nutrient transport in lawn irrigation driven surface runoff are largely unknown. We investigated the transport of nitrogen (N) and phosphorus (P) in lawn irrigation driven surface runoff from a residential neighborhood (28 ha) of 56% impervious and 44% pervious areas. Pervious areas encompassing turfgrass (lawns) in the neighborhood were irrigated with the reclaimed wa...

Nitrous oxide (NO) emissions are an important component of the greenhouse gas budget for turfgrasses. To estimate NO emissions and global warming potential, the DAYCENT ecosystem model was parameterized and applied to turfgrass ecosystems. The annual cumulative NO emissions predicted by the DAYCENT model were close to the measured emission rates of Kentucky bluegrass ( L.) sites in Colorado (wi...

Lawn S (2008) Tobacco control policies, social inequality and mental health populations: time for a comprehensive treatment response. alterations made during the publishing process may not appear in this version.

In this video Q&A, we talk to Dr Stephen Lawn about the point-of-care LAM test for HIV-associated TB, which has the potential to save lives by improving rapid diagnosis and treatment.

In this video Q&A, we talk to Dr Stephen Lawn about the point-of-care LAM test for HIV-associated TB, which has the potential to save lives by improving rapid diagnosis and treatment.

Robotic ground vehicles are systems that use gravity and contact forces with the ground to perform motion. In this paper we will focus on n-wheeled vehicles able to perform motion with all the wheels maintaining contact at the same time. The main goal of this work is to establish the implication of the topological architecture of the vehicle mechanism on criteria such as climbing skills, robust...

Various single-rider open vehicles, such as lawnmowers, are susceptible to overturning on slopes that are too steep for them. Warnings have included separation from the vehicles and avoiding slopes that are too steep. A recommended maximum slope is commonly 15 degrees. However, many individuals cannot evaluate slopes just by sight. Some mower manufacturers have warned about too steep slopes and...

This paper describes our recent work on robotic manipulation using a robot with just one motor. The drift field provided by gravity can serve as an uncontrolled motor to allow a single-motor robot to throw objects to itself, a simple type of robotic juggling. Similarly, the drift field provided by a conveyor belt can serve as an uncontrolled motor to allow a single-motor robot to feed parts in ...

7 EDITORIAL Please cite this paper as: White, J. Going native (or not): Five questions to ask mobile application developers. Introduction I recently needed a new shovel. At the hardware store I was, as always, taken aback at the range of options available to me, and the range of prices I could pay. Hardware store regulars will know that this is true of everything from lawnmowers to screwdrivers...