Toss the beef with 1/2 teaspoon each salt and pepper. Heat the oil in a pressure cooker over medium-high heat. Add the beef and cook, stirring occasionally, until browned on all sides, about 4 minutes.Add the onions and cook, stirring frequently, until the onions soften and begin to brown, about 4 minutes.eat the oil in a pressure cooker over medium-high heat. Add the beef and cook, stirring occasionally, until browned on all sides, about 4 minutes. Add the onions and cook, stirring frequently, until the onions soften and begin to brown, about 4 minutes.
Thus, metals have positive electron affinities. In the Periodic Table, electron affinity increases (becomes more negative) from left to right in a period. Electron affinity decreases from top to bottom in a Group.
Binding Affinity Equation. 1  The term Î± describes the co-operativity in the system. 2  For example, the effect of C on the KD for the interaction of A with B is represented by Î±, in that KD(AB) becomes Î±KD(AB) in the presence of C. 3  If there is positive co-operativity, alpha is less than 1; the presence of C increases the affinity of A for B.