The soil environment immediately around a root frequently has a larger number of microorganisms compared to soil just a few millimeters away from a root. This zone of influence is called the rhizosphere (Rovira, 1991), which is composed of many groups of organisms that are capable of affecting plant health beneficially and deleteriously (Schippers et al., 1987). Putting greens are artificially ...

Let {Xn, n >= 1} be a strictly stationary sequence of negatively associated random variables, with common continuous and bounded distribution function F. In this paper, we consider the estimation of the two-dimensional distribution function of (X1,Xk+1) based on histogram type estimators as well as the estimation of the covariance function of the limit empirical process induced by the se...

Introduction Lutein is a carotenoid that can be found in dark green and yellow vegetables, fruits and egg yolk. Lutein, like other carotenoids, is an antioxidant. Sources Lutein and a close chemical zeaxanthin are xanthophyll carotenoids found in a wide variety of plant foods, especially dark green leafy vegetables, such as kale, spinach, turnip greens, and collards. Their concentrations in the...