This paper describes the effect of surface functionalization on surface composition and cell adhesion to titanium samples by high and low molecular weight Hyaluronan (HA). HA was covalently linked to aminated Ti surfaces obtained by two different surface functionalization techniques, that is polyethyleneimine (PEI) adsorption and deposition from allylamine plasma. The two approaches yield very different surface densities of available amino groups, affecting this way the number and frequency of surface-HA bonds and the configurational freedom of the latter. Results of cell adhesion test are dependent on the surface functionalization approach adopted, low molecular weight HA coupled to PEI functionalized Ti does not yield the same degree of resistance to cell adhesion found on other samples. These results indicate that the details of the surface functionalization step are crucial for surface engineering of implant devices by biological molecules.
We show that the effective temporal ($\Delta t$) and spectral
($\Delta\omega$) resolution of the techniques is not controlled solely by
Experimental knobs but also depends on the system dynamics being probed. The
Fourier uncertainty $\Delta\omega\Delta t>1$ is never violated....
We describe an experiment
Integrating Diffractive Optic Elements (DOE's) with surface electrode traps,
Connected through in-vacuum multi-mode fibers. The square DOE's reported here
Were all designed with solid angle collection efficiencies of 3.58%; with all
Losses included a detection efficiency of...
Empirically determined values of the nuclear volume and surface symmetry
energy coefficients from nuclear masses are expressed in terms of density
distributions of nucleons in heavy nuclei in the local density approximation.
This is then used to extract the value of the symmetry energy slope parame...
Pubget Updates sends you emails when Pubget finds new papers that match your search. Use Pubget Updates to get the latest articles for your specialty, written by a colleague, or published by your favorite journals.