objective: the incidence of heart valve disease is increasing worldwide and the number of heart valve replacements is expected to increase in the future. by mimicking the main tissue structures and properties of heart valve, tissue engineering offers new options for the replacements. applying an appropriate scaffold in fabricating tissue-engineered heart valves (tehvs) is of importance since it...

Biostabilization is a newly proposed method to improve the strength and durability of geomaterials, it can serve as an alternative chemical mechanical stabilization. The objectives this study are perform biostabilization treatments for selected roadway construction geomaterials evaluate effects on engineering properties geomaterials. Three types were selected, two them compacted soil from unpav...

We investigate the spectral properties of one-dimensional lattices with position-dependent hopping amplitudes and on-site potentials that are smooth bounded functions position. find an exact integral form for density states (DOS) in limit infinite number sites, which we derive using a mixed Bloch-Wannier basis consisting piecewise Wannier functions. Next, provide solution inverse problem constr...

Abstract This study was to evaluate the engineering properties of cement stabilized expansive clay soils. considered an experimental program determine Atterberg limits, free swell index, compaction characteristics, California Bearing Ratio (CBR), and mixtures. The collected soils were using 10, 12, 14, 16 % by weight. laboratory results showed that have low shear strength high swelling potentia...