The silicon that has diffused from the substrate has occupied the position of the Zn vacancies in the ZnO:Tb3+thin films at the higher substrate temperatures (400掳C). A blue emission was observed for all the ZnO:Tb3+thin films deposited at the different substrate temperatures....
Indeed, the mismatch view of unemployment and vacancies is not new.2 Tobin (1972, p. 9) advances a theory of a "stochastic macro-equilibrium" in which "exc... 被引量: 0发表: 0年 Resolute enters into new $600 miilion credit facility North America's largest newsprint maker. Resolute For...
it is defined as "a managerial activity of an enterprise aimed at simultaneously meeting its needs in necessary personnel and the identified needs of existing and potential employees by retaining (or attracting) them through a set of measures ensuring attractiveness of positions / vacancies, payments...