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The smell of freshly cut grass may evoke associations with chores. For humans, the smell of freshly cut grass is connected through olfactory memory [11] to experiences related to lawns, lawn mowers, [12] or haying. The smell may evoke nostalgia, eliciting associations with spring or summer, [13] parklands, golf courses, or preparations for ...
Wastewater quality indicators are laboratory test methodologies to assess suitability of wastewater for disposal, treatment or reuse. The main parameters in sewage that are measured to assess the sewage strength or quality as well as treatment options include: solids, indicators of organic matter, nitrogen, phosphorus, indicators of fecal ...
The threshold value is the concentration at which an aroma or taste can be detected (air, water and fat). The recognition threshold or arousal threshold of olfactory neurons is the concentration at which you can identify an odor (air, water and fat). The odour activity value is the concentration divided by the threshold.
Mold on houseplant soil may look problematic, but it’s easy to reverse the damage. Take these steps to cure your moldy houseplants and prevent future infections.
The agricultural practice of tilling decreases the degree of soil water repellency. Tilling crop fields reduces the carbon content of the soil through mixing and mineralization, thus decreasing the likelihood of decomposition by microorganisms that can lead to the dispersal of the hydrophobic coating that triggers soil water repellency. [3]
The national sampling and identification manual provides: background information on acid sulfate soil formation and disturbance processes and environmental impacts; the minimum requirements of a desktop assessment and site inspection; and a guide to sampling and field testing. Key features of the national laboratory methods manual are:
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A simple soil moisture sensor for gardeners. Soil moisture sensors measure the volumetric water content in soil. [1] Since the direct gravimetric measurement of free soil moisture requires removing, drying, and weighing of a sample, soil moisture sensors measure the volumetric water content indirectly by using some other property of the soil, such as electrical resistance, dielectric constant ...