The influence of the interaction among water-cement ratio, content expansion agent, water reducing and retarder on compressive strength new sealing material was studied. Design-Expert software used to design experiments, establish a quadratic polynomial regression model, draw response surface, optimize parameters. microstructure morphology sample is explored by scanning electron microscope (her...

Researchers in many nations are focusing more on the growth and usage of marine field, it is apparent that study field will be future development trend. The present adopts idea polarization imaging based liquid crystal phase retarder as a solution to drawbacks conventional industrial camera clarity. Various optical thicknesses employed characterize sea fog concentration; an outside equipment co...

An achromatic infrared (lambda = 1.2-4 microm), Si-prism quarter-wave retarder (QWR) is described that uses total internal reflection at a buried Si-SiO2 interface at an angle of incidence phi near 33 degrees, where deltaDelta/deltaphi = 0. The retardance delta deviates from 90 degrees by < +/- 2 degrees within a field of view of +/- 10 degrees (in air) over the entire bandwidth. Because the Si...

New three dimensional (3d) displays exploiting patterned retardation elements (i) external and (ii) internal to the LCD are discussed. The fabrication of a 13.8" diagonal patterned retardation element from reactive mesogen, which co-operates with a polariser to form a parallax barrier, is described. An electrically switching LC cell demonstration incorporating a polariser and retarder array ins...

Vertical scanning interferometry and XPS show the reaction of CaCO3 with the hydration retarder nitrilo-tris-(methylene)phosphonic acid follows a pathway of dissolution of the calcium followed by precipitation of a calcium phosphonate; subsequent surface reorganization/restructuring of the calcium phosphonate exposes the underlying CaCO3 for further hydration.