Ficus elastica leaves the latex of the plant oozing, is coated with cuttings hormones and tightly wrapped with moist foam. The whole is covered with a plastic film and left a few months at the end of which new roots have developed from the axillary buds. The stem is then weaned and the new plant can be repotted. All parts of the plant contain an abundant milky white latex, which has been tested for use in the manufacture of rubber, but without economic and technical results; the rubber is actually produced from the sap of the rubber tree . In cultivation, it
Mean flow "Q" = 4 m³/s. Mean flow In fluid dynamics, the fluid flow is often decomposed into a mean flow – and deviations from the mean. The averaging can be done either in space or in time, or by ensemble averaging. Calculation of the mean flow may often be as simple as the mathematical mean: simply add up the given flow rates and then divide the final figure by the number of initial readings. For example, given two discharges ("Q") of 3 m³/s and 5 m³/s, we can use these flow rates "Q" to calculate the mean flow rate "Q". Which