Definition - What does Positive Displacement Pump mean? Positive Displacement Pump is a type of pump used to displace or force oil and petroleum products into pipelines or into various equipment installed in refineries.
A brain looks like a walnut because our minds are constantly making comparisons and finding similarities to help us understand the world around us. Here's an activity that can help you see more such things. Try to find faces.
Story at-a-glance 1  -. One-quarter cup of walnuts, for instance, provides more than 100 percent of the daily recommended value of plant-based omega-3 fats, along with high amounts of copper, manganese, molybdenum, and biotin. 2  Walnuts may help reduce not only the risk of prostate cancer, but breast cancer as well. Walnuts contain the amino acid l-arginine, which offers multiple vascular benefits to people with heart disease, or those who have increased risk for heart disease due to multiple cardiac risk factors. Walnuts contain several unique and powerful antioxidants that are available in only a few commonly eaten foods.