The effect of hygrothermal conditions (air temperature and relative humidity) on the dehydration of theophylline monohydrate was investigated. Firstly, the equilibrium states of theophylline were investigated. The data from gravimetric analysis at constant temperature and humidity were reported as desorption isotherms. The PXRD analysis was used to identify the different polymorphic forms of th...

Cool season crops face intermittent drought. Exposure to drought and other abiotic stresses is known to increase tolerance of the plants against subsequent exposure to such stresses. Storage of environmental signals is also proposed. Preexposure to a dehydration shock improved adaptive response during subsequent dehydration treatment in a cool season crop chickpea (Cicer arietinum). We have ide...

The dehydration of theophylline monohydrate in powder and tablet forms was studied by using an infrared water-content measuring instrument.Intact theophylline powder was recrystallized from distilled water,and ground powder was obtained by grinding in a ceramic mortar with a pestle.The samples were dehydrated as follows.The intact and ground powders were placed on a plate8cm in diameter.A powde...

The paper proposed to use a Recurrent Neural Network model (RNN) for process prediction of the osmotic dehydration kinetics of nature product cubes (apple, sweet potatoes and potatoes) at different operational conditions of temperature and concentration of the osmotic solution. The proposed RNN model has five inputs, three outputs and eight neurons in the hidden layer, with global and local fee...

Experiments in pulse-injected flow reactors show that gas-phase pyrolysis of alcohols makes a transition from dehydrogenation dominance for mono-alcohols to dehydration and fragmentation for tested diols and a triol. These dehydration and dehydrogenation reactions are proposed to occur by unimolecular and bimolecular pericyclic reactions, as has been used to explain glucose and cellulose pyroly...