Background. Environmental pollution with toxic compounds poses a danger to nature and humans. Various technologies for soil purification from metals are being developed. Objective. The work was aimed study the possibility of lawn grass using Cr(VI). Methods. Plant seeds (Festuca rubra L. 45%, Festuca arundinacea Schreb. 25%, Lolium perenne 20%, Poa pratensis 10%) were sown in container at 24 °C...

according to high importance of sodding for fast creating green beds in all seasons, this experiment carried out with aimidentifying suitable substrate and covering plant including two lawn genus and dichondra with blend seed. the trial carried out as factorial experiment with three factors based on complete block design in three replications. experimental factors consisted of planting networks...

We present a method for navigating an autonomous agent based on the textures present in an environment. Specifically, the autonomous agent in question is that of a robotic lawn mower. If we can successfully differentiate the textures of the cut and uncut lawn surfaces, then we can track the boundary between them and mow in a pattern as a human would. The system uses the wavelet transform as the...

The authors give a history of the so-called tennis ball problem, and discuss its relation to lattice path enumeration. We also prove a conjecture related to a solution of the symmetric case, namely when the number of balls removed each turn is exactly half the number inserted. Key words: Tennis Ball Problem, lattice path, Finite Operator Calculus 1 The Tennis Ball Problem-History The tennis bal...

We describe the reconstitution of exocytotic function through recombination of purified cortical secretory vesicles (CVs) and plasma membrane from sea urchin eggs. CVs were dislodged from a cell surface complex preparation by gentle homogenization in an isotonic dissociation buffer, and purified by differential centrifugation. CV-free plasma membrane fragments were obtained by mechanically disl...