A combined blast fence is introduced in this paper to improve the solid blast fences and louvered ones. Experiments of the jet engine exhaust flow (hereinafter jet flow for short) field and tests of three kinds of blast fences in two positions were carried out. The results show that the pressure and temperature at the centre of the jet flow decrease gradually as the flow moves farther away from...

Concentrated herbivory by elk (Cervus elaphus) can degrade vegetative communities and alter ecosystem processes. Areas severely damaged by elk are commonly protected with woven wire fence, which can exclude other animals. Complete exclusion and prevention of large mammal herbivory might not always be necessary to restore vegetative communities. We designed and evaluated a simple fence that excl...

Demand for commercial bee (Apis mellifera) services recently has increased, resulting in greater use of mobile apiaries for crop pollination. When commercial apiaries are moved into areas occupied by black bears (Ursus americanus), conflicts between beekeepers and bears sometimes occur. Commercial pollination often involves moving apiaries among agricultural fields, and, thus, permanent fencing...

The combined effect of shear and buoyancy on dispersion behind a fence is examined. Stable turbulent boundary layers up to Rigrad 1⁄4 0.2 are generated by a recycle method. The fence affects concentrations up to at least 100 obstacle heights downstream. The decay of maximum velocity and temperature deficit is independent of stability. The decay in maximum concentration excess decreases appreciably

What are the effects of snow fence variables on wind patterns, and geometry and volume of snow collected in drifts? This question arose from a need to capture winter’s blowing snow to improve water supply during a drought and to protect critical areas from blowing snow. Last year, during the first phase of this project, various powders were tested to find which would closely replicate snow in a...

limited by the timing of new tiller development. Development of new tillers in smooth bromegrass is largely Smooth bromegrass (Bromus inermis Leyss) is poorly adapted to determinant, with synchronized elevation and elongamanagement-intensive rotational grazing because of slow and limited tion of new apical meristems above the soil surface regrowth potential. In an effort to discover germplasm w...

Cover Art Caption: Odor emission from swine facilities is a major issue for the pork industry. Here, air samples are taken to determine the impact of reducing dietary crude protein concentration through the use of crystalline amino acids on odor emission into building air. The effects of type of housing (stalls versus pens) and method of heat detection (fence-line boar exposure conducted in-pla...

Suppose that a fence needs to be protected (perpetually) by k mobile agents with maximum speeds v1, . . . , vk so that no point on the fence is left unattended for more than a given amount of time. The problem is to determine if this requirement can be met, and if so, to design a suitable patrolling schedule for the agents. Alternatively, one would like to find a schedule that minimizes the idl...

Epigenetic mechanisms may be important for a native species' response to rapid environmental change. Red Imported Fire Ants (Solenopsis invicta Santschi, 1916) were recently introduced to areas occupied by the Eastern Fence Lizard (Sceloporus undulatus Bosc & Daudin, 1801). Behavioral, morphological and physiological phenotypes of the Eastern Fence Lizard have changed following invasion, creati...

Non-volatile memory (NVM) promises fast, byte-addressable and durable storage, with raw access latencies in the same order of magnitude as DRAM. But in order to take advantage of the durability of NVM, programmers need to design persistent objects which maintain consistent state across system crashes and restarts. Concurrent implementations of persistent objects typically make heavy use of expe...