1 An actor is a person, organization, or external system that plays a role in one or more interactions with your system. 2  Actors are drawn as stick figures. 3  Associations. 4  Associations between actors and use cases are indicated in use case diagrams by solid lines.
Beauty benefits of walnut oil (Thinkstock photos/Getty Images) High in vitamins and proteins, walnut oil works wonders for your skin. Apart from eating walnuts, the use of it in the form of oil also helps your skin. They are known to be rich in fibre, Omega-3, protein and other vital minerals. Fights wrinkles.
Walnuts, a healthy snack food, provide omega-3 fatty acids and ellagic acids. Omega-3 acids can improve your heart health and reduce inflammation. Ellagic acid is beneficial to your immune system. Toasted walnuts provide a crunchier texture and introduce a more vivid nut flavor to the palate. Toast walnuts in your home oven before adding these nutritious tidbits to salads, yogurt or ice cream.