Abstract Invited for this month's cover is the group of Scott McIndoe at University Victoria (Canada). The picture shows a pressurized reaction vessel with tubing leading out flask. That normally leads directly into an electrospray ionization mass spectrometer, where mass‐to‐charge ratio and relative abundance solution phase ions are measured. These data can be used to generate chronograms each...

Pressurized sand media filters are commonly used in drip irrigation systems to prevent emitter clogging. However, the performance of these may be improved with more information about retention solids at different bed depths under filter operation conditions and water sources. In this study, experiments a scaled were conducted clog two filtration velocities (30 60 m h−1) two-particle types (inor...

OBJECTIVES/HYPOTHESIS Sinonasal diseases are often treated with topical agents administered through various application techniques, but few prior studies have examined their distribution to the olfactory mucosa. The purpose of this study was to compare the distribution of nasal irrigations to sprays within the olfactory cleft. STUDY DESIGN Human cadaveric study. METHODS Eight cadaveric head...

There is a critical need to improve the performance and utility of unmanned aerial vehicles (UAVs). Several areas of UAV performance need to be improved for the next generation of UAVS to be used successfully in expanded future combat roles. For example current time aloft is only on the order of an hour or two for electric-powered UAVs. The current generation of UAVs lacks vertical takeoff and ...

A simulation model was developed to estimate the effect of deficit irrigation upon crop yield. The model was designed to provide relative yield estimates for numerous combinations of irrigation system, crop growth and irrigation management parameters. A daily soil moisture balance was used to predict evaporation and transpiration from which crop yields were estimated. Gross irrigation water req...

Hydraulic fracturing—the injection of pressurized fluid, often water, to increase recovery of oil or gas—has become increasingly popular in combination with horizontal drilling. Hydraulic fracturing improves production from a well, but requires a significant amount of water to do so and could put pressure on existing water resources, especially in water-stressed areas. To supply water needs, so...

* Corresponding author. [email protected] Abstract – Previous studies have shown that irrigation can impact the near-surface climate, but none refer to the differences in the impacts of irrigation types such as flooding and spraying. In this study, we add a novel irrigation module to the recently released community land model 4.0 and simulate irrigation in two ways: first, by spraying water...