Demineralization of a Carbon Material Derived from Palm Kernel Shells as a Process for the Enhancement of the Electrochemical Performance of Lithium-Sulfur Cells.

Carbon materials derived from biomass have been widely used in Li-S batteries; however, the mineral matter present in the biomass could impact the properties of the carbons and affect the electrochemical performance. In this study, the removal of mineral matter from palm kernel shells is reported to identify the effect of minerals on the physicochemical properties of the derived activated carbon and correlate them to the electrochemical performance in Li-S batteries. The content of minerals such as silicon, iron, and potassium was decreased by acid washing.

Temporal and geographic variability of bisphenol levels in humans: A systematic review and meta-analysis of international biomonitoring data.

Introduction: Bisphenols are endocrine-disrupting chemicals known to contribute to chronic disease across the lifespan. With increased awareness of their health effects, changes in regulation and health behaviors have contributed to reductions in urinary bisphenol A (BPA) levels in the United States, Canada, and Europe. However, global trends in bisphenols outside these regions, especially bisphenol S (BPS) exposure, have been less studied.

A case of a rash after tetanus-diphtheria-pertussis and meningococcal vaccination.

We present a case of a 12-year-old healthy girl who presented with acute onset of dry, hyperpigmented, and raised pruritic rash. The lesions initially presented on her thighs then progressed to the trunk and arms hours after receiving the tetanus-diphtheria-pertussis (Tdap) and meningococcal vaccine. After a poor response to medium potency topical steroids, a biopsy specimen was taken, which led to our diagnosis.