one of the problems encountering gerbera production is the decreasing flower quality and yield especially when grown in non-standard greenhouse coditions. in this research the effect of weekly humic acid (ha) (500 mg/l) spray was studied and compared with application of 2 solutions containing 3.5 and 7 meq/l of calcium along with the same concentration of ha on gerbera jamesonii l. it was demon...

The emergence of nosocomial diseases driven by multidrug resistant bacteria is a major issue for our healthcare system. Mechanisms underlying multidrug resistance in these bacteria can be linked to the decreased permeability of bacterial membranes towards antibiotics, either by structural modifications inducing reduced passive diffusion, or by decreasing active uptake systems. Micro-organisms n...

Challenges exist for the study of time dependent sorption processes for heterogeneous systems, especially in the case of dispersed nanomaterials in solvents or solutions because they are not well suited to conventional batch kinetic experiments. In this study, a comparison of batch versus a one-pot setup in two variable configurations was evaluated for the study of uptake kinetics in heterogene...

A model of solute uptake that accepts root growth, water uptake, and soil solution concentration as time-varying input is required to interactively link plant and soil processes. The advantage of the steadystate approach to solute uptake over more exact numerical solutions lies in the independence of the mathematical solution to previous conditions. Uptake thus calculated can accommodate unpred...

Numerical solutions have been obtained for the equations describing 02 uptake by layers of concentrated hemoglobin solution 0.25, 0.5, 1, 1.6, 2, 3.6, 5, 10, and 20 p thick. The results indicate that the diffusion of oxyhemoglobin has almost no effect on the rate of oxygenation of the 0.25 p layer, but its influence increases with increasing layer thickness, so that it shortens the time require...

Gerbera(Gerbera jamesonii) from the family of Asteraceae is regarded as one of the best cut flowers in the world. Despite of the publicity of Gerbera’s cut flowers, they have a short postharvest life. The objective of the present study was to study the replacement feasibility and the comparison of thymol (isolated from zataria), and essential oils of peppermint and rosemary (200, 400 and 600 mg...