نتایج جستجو برای: natural polymers
تعداد نتایج: 548621 فیلتر نتایج به سال:
In this work, stents were produced from natural origin polysaccharides. Alginate, gellan gum, and a blend of these with gelatin were used to produce hollow tube (stents) following a combination of templated gelation and critical point carbon dioxide drying. Morphological analysis of the surface of the stents was carried out by scanning electron microscopy. Indwelling time, encrustation, and sta...
The encapsulation of living mammalian cells within a semi-permeable hydrogel matrix is an attractive procedure for many biomedical and biotechnological applications, such as xenotransplantation, maintenance of stem cell phenotype and bioprinting of three-dimensional scaffolds for tissue engineering and regenerative medicine. In this review, we focus on naturally derived polymers that can form h...
A natural orbital functional (NOF) satisfying the properties of the reduced density matrices is critically reviewed. Test calculations of the total and ionization energies, dipole moments, equilibrium geometries and harmonic vibrational frequencies of several molecules in the ground state demonstrate the reliability of the formalism. The extension of NOF theory to calculate correlation energies...
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