Effect of Blanching on Sorption Isotherms of Spinach

A study was conducted to determine the effect of blanching on moisture adsorption and desorption characteristics of spinach. Moisture sorption was determined by gravimetric method. Different saturated salt solutions were prepared to provide constant relative humidity environments. Four spinach samples (unblanched, unblanched dried, blanched and blanched dried) were kept at 3 temperatures (300C, 400C and 60ºC) with corresponding 5 relative humidity levels (10.95 to 92.31%). It was observed that for all samples, equilibrium moisture content (EMC) of spinach increased with increase in relative humidity at constant temperature. At constant relative humidity levels, EMC decreased with increase in temperature. The adsorption EMC of the spinach was lower than the desorption EMC for blanched as well as unblanched spinach for all temperature and relative humidity ranges. The blanched dried spinach exhibited lowest EMC at all temperature and relative humidity ranges

Efficient synthesis of isoxazolidine-substituted bisphosphonates by 1,3-dipolar cycloaddition reactions

Several bisphosphonates bearing a substituted isoxazolidine ring have been synthesized in good yield by direct 1,3-dipolar cyclization reaction, under microwaves catalysis, in the absence of solvent. The method allows the simultaneous incorporation, on the germinal position of the bisphosphonate framework, of a basic nitrogen and of an oxygen atom, as third hook. This class of compounds appears particular promising for pharmacological activit

Efficient synthesis of isoxazolidine-substituted bisphosphonates by 1,3-dipolar cycloaddition reactions

Several bisphosphonates bearing a substituted isoxazolidine ring have been synthesized in good yield by direct 1,3-dipolar cyclization reaction, under microwaves catalysis, in the absence of solvent. The method allows the simultaneous incorporation, on the geminal position of the bisphosphonate framework, of a basic nitrogen and of an oxygen atom, as third hook. Hydrophobicity-hydrophilicity of BPs is discussed with the help of distribution coefficients. \ua9 2011 Elsevier Ltd

Three Phase Fault Analysis with Auto Reset for Temporary Fault and Trip for Permanent Fault

In any electrical power system , due to some problems such as over voltage , over current, insulator failure i.e. line to line , line to ground , double line to ground faults occur. This fault collapses the transmission system. These faults may be temporary fault or permanent fault. This fault causes some defects on equipments. To get clearance of fault & disconnect the line the circuit breaker is used. For reclosing, mechanism resets the supply line after small interruption in the event of temporary fault or it remains in tripped condition in case of permanent fault