What precaution must be taken in regard to spills on a painted surface with a phosphate ester fluid such as Skydrol?

What precaution must be taken in regard to spills on a painted surface with a phosphate ester fluid such as Skydrol? Skydrol has a 5-year shelf life from the date of manufacture. Skydrol fluids are extremely irritating to human tissue. Gloves and goggles are recommended safety equipment when servicing Skydrol systems. If the fluid gets […]

Are artificial membranes permeable or impermeable?

Are artificial membranes permeable or impermeable? An artificial membrane composed of pure phospholipid or of phospholipid and cholesterol is permeable to gases, such as O2 and CO2, and small, uncharged polar molecules, such as urea and ethanol (Figure 15-1). Such molecules also can cross cellular membranes by passive diffusion unaided by transport proteins. Is dialysis […]

Why do I want to eat so much on my period?

Why do I want to eat so much on my period? The levels of the hormones estrogen and progesterone go up and down during the different phases of your period, which affects your hunger levels. The rise in estrogen during the follicular phase can leave you feeling moody, cranky, and sad. Therefore, your body craves […]

Who invented Stickmen?

Who invented Stickmen? The Chapman Stick is a 5 and 1/4 octave, stringed and fretted musical instrument played with a two-handed tapping technique. Both the instrument and the technique were created by American musician and inventor Emmett Chapman. When was the first stick figure made? Recent history of stickman figure from Ohio around AD 1000–1650 […]

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