Calibration of a permeation tube and a diffusion tube with an electrobalance.

a comparison of teachers and supervisors, with respect to teacher efficacy and reflection

supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...

Calibration of a Reference Vibrating Tube Densimeter

−This article reports the calibration procedure for a commercial Solartron 7835 densimeter which is currently used as “reference” instrument in an automatic apparatus for the calibration of on-line densimeters. Three different materials (fluids), whose densities are known at the usual working condition of pressure and temperature, are used for characterizing the reference densimeter. The proced...

Analyzing the Behavior of Hybrid Steel System of Tube in Tube with Bracing and Belt Truss

Nowadays, due to the escalation in construction of high-rise structures, the need for selecting a proper resistant structural system against earthquake and wind has increased significantly. These systems should show an optimized use of materials and should be presented as a hard and efficient structure. A good example of a high efficient system in high-rise buildings can be indicated is, the tu...

A Broken Metallic Tracheostomy Tube

Diffusion in Tube Dialyzer

Nowadays, kidney failure is a problem of many peoples in the world. We know that the main function of kidney is maintaining the chemical quality of blood particularly removing urea through urine. But when they malfunction, the pathologic state known as uremia results in a condition in which the urea is retained in the body. Failure of the kidney results in building up of harmful wastes and exce...