One-time reinfection with SARS-Cov-2 does not warranty of immunity against reinfection due to various possible reasons for this like waning immunity or high viral load or an immunocompromised state. ...Cases of reinfection have been reported from many countries in the world, here in this case series we are sharing the experience of three cases of reinfection from India. Two of them were old with multiple comorbidities and one is a young patient with no comorbidity. All three-patient got reinfected less than two months.
Few essential electronic properties of potential anti-cancer complexes are examined using quantum mechanical calculations. The co-ordination ability of these ligands with the central Ru metal has ...been assessed. The ionization energies and HOMO-LUMO gaps are used to explain the coordinate bond formation between ligand and Ru. The variation of charges from natural population analysis(NPA) of the donor sites of ligands is fairly similar to the trends in the coordinate bond distances despite the presence of other ligands in these Ru complexes. Slight variation of coordinate bonds (Ru-donor site) has been found. In addition, Cl dissociation energies from these complexes do not vary much and the trend of the energy values are similar to oxidation energies of these complexes. The NPA charges and HOMO-LUMO electron density mapping indicate that the electron density around Ru metal is increasing, which suggests that the migration of electron density is towards Ru.
Few essential electronic properties of potential anti-cancer complexes are examined using quantum mechanical calculations. The co-ordination ability of these ligands with the central Ru metal has ...been assessed. The ionization energies and HOMO-LUMO gaps are used to explain the coordinate bond formation between ligand and Ru. The variation of charges from natural population analysis(NPA) of the donor sites of ligands is fairly similar to the trends in the coordinate bond distances despite the presence of other ligands in these Ru complexes. Slight variation of coordinate bonds (Ru-donor site) has been found. In addition, Cl dissociation energies from these complexes do not vary much and the trend of the energy values are similar to oxidation energies of these complexes. The NPA charges and HOMO-LUMO electron density mapping indicate that the electron density around Ru metal is increasing, which suggests that the migration of electron density is towards Ru.
ZnO nanocrystals were synthesized by adopting quenching method with Poly-vinyl alcohol as the matrix. X-ray diffraction, UV-vis spectroscopy, Photoluminescence, scanning electron microscopy, energy ...dispersive x-ray spectroscopy and transmission electron microscopy has been used to study the prepared samples. The size of the nanocrystals is in the range of 6.9 nm to 12.5 nm. We have successfully varied the size of the nanocrystals by varying the weight ratio of poly-vinyl alcohol and ZnO. The conductivity of the samples has been tested in atmospheric pressure as well as in vacuum.
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