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.
The study also found that the nut has up to 15 times more antioxidant potency than vitamin E, an oil known for its strong antioxidant effects. This suggests that walnuts may play a role in preventing us from getting cancer, as well as other free-radical-based diseases. What the walnut has that other foods may not: 1  A unique combination of nutritional benefits and antioxidants. 2  A complete high-quality protein that packs almost as much protein-punch as meat. 3  Tons of vitamins and minerals. 4  A natural form of dietary fiber in a raw and easy to eat form.