One of the indexes of stabilization pond is the presence of coliform bacteria in water and wastewater. This study aimed to determine the effect of solar light on coliform variations in stabilization pond. In this experimental study, the effect of light, pH (<7, 7.1–8, 8.1–9), and temperature (10 ºC and 30 ºC) on facultative stabilization pond was studied for six months. The sampling was accompl...

When investigating the physics of the heavy light mesonic system within the frame work of non-relativistic QCD (NRQCD), the action and observables are expanded in powers of ΛQCD/MQ, MQ denoting the heavy quark mass. If the regularisation, in our case the lattice cutoff, would be removed, divergences will arise in the matrix elements and coefficients of the expansion. To circumvent this, we keep...

An orthogonal network for a given set of n points in the plane is an axis-aligned planar straight line graph that connects all input points. We show that for any set of n points in the plane, there is an orthogonal network that (i) is short having a total edge length of O(jT j), where jT j denotes the length of a minimum Euclidean spanning tree for the point set; (ii) is small having O(n) verti...

The coupling constant gρσγ is determined from light cone QCD sum rules. A comparison of our result with the ones existing in literature is presented. PACS number(s): 11.55.Hx, 13.40.Hq, 14.40.Cs e-mail: [email protected] e-mail: [email protected] e-mail: [email protected]

From an engineering point of view, the effect of light intensity distribution on the stability of growth rate should be taken into account in designing effective photobioreactors and sustaining stable growth rates. In the experiments described here, in order to keep operational parameters at an almost constant level, a semi-continuous culture method was developed for cultivation of photosynthet...