OBJECTIVES This study evaluated the effect of errors commonly made in using total-etch adhesives, on the resulting bond strength, fluid movement and nanoleakage of resin dentin bonds. METHODS Two total-etch adhesives were used for bonding to dentin according to the manufacturers' recommendations, with meticulous solvent evaporation (control), or with the introduction of common bonding errors-...

Objective:Platycladus orientalis or Thuja orientalis is a native plant of Iran different parts of which are used in the treatment of various diseases such as: gout, rheumatoid arthritis, common cold, cough, bronchitis, asthma, high blood pressure and hormonal disorders like hirsutism and baldness. Also, various organs of this species have been used as appetizer. The purpose of this study was to...

Solvents are widely used in wood conservation for either dissolving polymers for consolidation purposes or for removing dirt or foreign matter, which was applied during previous conservation. Solvents may cause temporary swelling of the wood, and when they evaporate wood returns back to its original size. They may form complexes with wood components when unlimited swelling arises as a consequen...

When a polymer solution with volatile solvent is exposed to open air, an elastic layer (called a skin) is often formed at the surface of the solution due to evaporation of the solvent. After such a skin is formed, further extraction of the solvent from the solution caused by evaporation has generally been considered to reduce the pressure in the solution. We have found that, in PMMA/acetone dro...

A sustained release dosage form of Metformin HCl in the form of microspheres was prepared by the solvent evaporation method. Solvent evaporation method was attempted in both aqueous as well as oily manufacturing vehicles. Different polymers such as Ethyl Cellulose, Eudragit RS PO, Eudragit RL PO, Eudragit S 100, Eudragit RL 100 and different combinations of these polymers were tried and the res...

Cefpodoxime Proxetil (Poorly water soluble drug), when prepared as solid dispersion showed improved solubility and dissolution. So the main purpose of this investigation was to increase the solubility and dissolution rate of Cefpodoxime Proxetil by the preparation of its solid dispersion with urea using solvent evaporation method. Physical mixtures and solid dispersions of Cefpodoxime Proxetil ...

The aim of this study was to prepare and evaluate poly(ε-caprolactone) (PCL) microspheres containing acetazolamide. Microspheres were prepared by solvent evaporation method. The influence of formulation factors (polymer: drug ratio, aqueous: oil phase ratio, concentration of aqueous phase, stirring speed and stirring time) on morphology, particle size, encapsulation and recovery efficiency were...

This chapter describes a method of sample preparation called "the rock and roll method," which is basically a solvent evaporation technique with controlled manual sample movement during evaporation of solvent from lipid/solvent mixtures that produces well-oriented thick stacks of about 2000 lipid bilayers. Many lipid types have been oriented using different solvent mixtures that balance solubil...