Coupling agents in wood fiber and polymer composites (WFPC) play a very important role in improving the compatibility and adhesion between polar wood fibers and non-polar polymeric matrices. In this paper, we review coupling agents, pretreatment, and mixing technology for wood fiber and polymer currenrly used in the manufacture of WFPC. So far, over forty coupling agents have been used in produ...

The purpose of this study is to assess the microleakage in CL V Amalgam restoration lined with and without varnishes and dentine bonding agents. In this study, two varishes (Kimia and Copalite) and two dentin bonding agents (Syntac and Excite) were used. 70 fresh human premolars were selected for this study. These samples were randomly divided to five groups (four group of 15 teeth and one grou...

Research interests: Asymmetric catalysis for organic synthesis, including chiral diaminocarbene ligands and VHOIɅDVVHPEOHGGLQXFOHDU catalysts; development of VPDOOPROHFXOHDQWLɅFDQFHU agents; and total synthesis of complex molecules with interesting biological activities. Abstract Novel chiral Co-salen catalysts capable of self-assembly through hydrogen bonding have been developed. First, a self...

control of hemorrhage is one of the challenging situations dentists confront during deep cavity preparation and before impressions or cementation of restorations. for the best bond and least contamination it is necessary to be familiar with the hemostatic agents available on the market and to be able to choose the appropriate one for specifi c situations. this review tries to introduce the comm...

Two-dimensional diagonal electrophoresis has been used to characterize intermolecular disulfide bonding of membrane proteins from lenses of cataractous and normal patients. A component of approximately 18,000 daltons, linked via intermolecular disulfide bonding, was found in membrane preparations from 10 of 17 cataracts studied. In comparison, membrane from only 1 of 12 normal lenses of approxi...