Many pregnant women experience emesis gravidarum in the first trimester. Nausea vomiting can be treated with pharmacological and non-pharmacological treatments. one of which is aromatherapy lemon which has an effect on the inhaler. such as calmness and freshness of the body so that it can reduce nausea and vomiting. https://hrzckxekqnni5o.theisblog.com/35125349/a-dynamic-and-adaptive-selection-radar-tracking-method-based-on-information-entropy