Global scenario of silica-associated diseases: A review on emerging pathophysiology of silicosis and potential therapeutic regimes.

Silicosis is an occupational fibrotic lung disease caused by exposure to respirable crystalline silica dust particles produced during industrial activities. Other crystalline silica-induced pulmonary disorders include a predisposition to mycobacterial infections, obstructive airway diseases, idiopathic pulmonary fibrosis, and lung cancer. This review paper discusses the burden of silicosis and associated co-morbidities in developed as well as developing countries globally using the published data of various government agencies, related organizations, and epidemiological findings.

Synthesis and novel emission properties of Bi -doped Ca BO Cl phosphor for plant cultivation.

In the present work, a series of Bi -activated Ca BO Cl phosphors was synthesized using the conventional high-temperature solid-state reaction method. The crystal structure of the prepared sample was determined to be monoclinic with space group P21/c. Scanning electron microscopy (SEM) analysis demonstrated the surface morphology with aggregated particles and sizes in the nano range.

Photoluminescence and thermoluminescence in Dy -, Ce -, and Tb -activated MgB O phosphor for dosimetry application.

Samples of microcrystalline rare earth-doped magnesium borate materials were synthesized via modified solid-state diffusion and were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. Photoluminescence (PL) results for the MgB O :Dy sample depicts blue emission that resulted from a F - H transition that peaked at 484 nm, which was much stronger than the yellow emission arising due to the F - H transition at 576 nm. From the emission spectra for MgB O :Tb, it seems that at higher concentrations of Tb ion, the green emission becomes strong and directly relates to the energy transfer from the D excited state to the D excited state through a cross-relaxation, whereas the blue emission is suppressed in MgB O phosphors.