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.
For one meal, the researchers added 40g. of walnuts and for the second, 25ml of olive oil. Both olive oil and walnuts decreased the inflammation in the. arteries caused by eating high-fat foods but the walnuts had an. added benefit-- they helped preserve the elasticity of the arteries.