The surface tension of aqueous solutions of simple cyclic, heterocyclic and aromatic amines was measured with a Du Nöuy tensiometer at 25 degrees C and the results discussed in terms of structure-aggregation relationships. The simple compounds used in this study were piperazine, piperidine, morpholine, 3-methylpyridine, cyclohexylamine and benzylamine, with carbon numbers ranging from four to s...

abstract soil moisture measurement and control is a base to employ optimal management methods for reducing water consumption and improvement of the product quality. the main objective of this research was increasing the efficiency of water consumption in a greenhouse condition. this study was carried out in the framework of three treatments of soil potential including irrigation at 40, 60 and 8...

We have previously investigated the formation of water-CO2 interface by means of a drop tensiometer [1]. In presence of CO2 , the interaction between the two adjacent phases leads to an organization of interfacial cluster network which controls the tension and the mechanical properties of the interface. The formation of those clusters at CO2 pressure lower than 80 bar inhibits the adsorption of...

The present study aimed at investigating scientific irrigation scheduling (SIS) for the sustainable production of olive groves. SIS allows farmers to schedule water rotation in their fields abate crop stress and maximize yields, which could be achieved through precise monitoring soil moisture. For this purpose, used three kinds moisture sensors, including tensiometer irrometer gypsum blocks mea...

ABSTRACT Knowing the soil moisture available to plants is important for adequate management of water use in agricultural farms, with automated methods being most accurate. However, acquisition costs are high and commercially irrigation controllers still work using pre-set times. This study aimed develop calibrate a low-cost tensiometer efficiency control, based on real-time monitoring. The rese...