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The 24-hour light-dark cycle is the most important external stimulus for regulating the timing of the circadian cycle. In addition to the aging eye, lighting designers need to consider the unique lifestyle needs of the elderly. It is especially important to provide strong illumination in stairwells to prevent slip and trips, for example.
Despite a looming legal threat, the Lenexa City Council rejected a crucial permit for Johnson County to finally establish a permanent homeless shelter, effectively killing the project as it stands ...
Community-led total sanitation (CLTS) is an approach used mainly in developing countries to improve sanitation and hygiene practices in a community. The approach tries to achieve behavior change in mainly rural people by a process of "triggering", leading to spontaneous and long-term abandonment of open defecation practices.
Simple LED (Light Emitting Diode) circuit diagram. In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED. The voltage drop across a lit LED is ...
Paper Kite. The best part of this family project: After everyone makes their own kite, you can all go outside to fly them together! It doesn't get better than that—especially when you realize ...
Related: Norman Reedus promises the 'best hour of Walking Dead ever' on season 2 of Daryl Dixon No character in The Walking Dead universe is harder to get closer to than Daryl, who locks his heart ...
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