Preparation of new MOF-808/chitosan composite for Cr(VI) adsorption from aqueous solution: Experimental and DFT study.

In this study, a series of Zirconium-based MOF and chitosan composites (MOF-808/chitosan) were synthesized as efficient adsorbent for Cr(VI) ions elimination from aqueous solution. MOF-808/chitosan structure and morphology was characterized by FE-SEM, EDX, XRD, BET, zeta potential analysis, FT-IR, XPS techniques. The kinetic studies ascertained that Cr(VI) adsorption over MOF-808/chitosan followed pseudo-second-order kinetic model.

Chronic Dysuria Following Ginger () Use: A Case Report.

Background: Although ginger is considered a harmless remedial substance for a wide range of medical complaints, according to Persian medicinal texts, its long-term or high-dose consumption is potentially harmful.

Case Report: The case of a 43-year-old man, with a complaint of urinary stream interruption, dysuria, and flank pain, following a non-prescribed use of ginger was reported. The symptoms were reported to persist for four years, despite some medical referrals.