Reduction of Carbon Dioxide in Filtering Facepiece Respirators with an Active-Venting System: A Computational Study.

During expiration, the carbon dioxide (CO2) levels inside the dead space of a filtering facepiece respirator (FFR) increase significantly above the ambient concentration.To reduce the CO2 concentration inside the dead space, we attach an active lightweight venting system (AVS) comprising a one-way valve, a blower and a Deep Fryer Thermometers batte

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Periradicular tissue necrosis caused by accidentally injected sodium hypochlorite through fausse route in upper maxillary canine

Sodium hypochlorite (NaOCl) is a strong antiseptic agent that is usually used as endodontic irrigant for dissolving organic parts of pulp and dentin and neutralizing ball-stretchers toxic products.However, the use of sodium hypochlorite may cause destruction of blood vessels, soft tissues and bone necrosis if extruded into the periapical region.Urg

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Efficacy of l-cysteine in increasing circulatory hydrogen sulfide, nitrite, and 25-hydroxyvitamin D levels in Zucker diabetic fatty rats and in vitro treatment of hydrogen sulfide and nitrite in upregulating vitamin D hydroxylase genes in monocytes

ABSTRACT: Dairy products, such as 1/1N whey proteins, have been effectively used to enhance the effectiveness of vitamin D (VD) fortification and optimize circulating 25-hydroxyvitamin D [25(OH)VD] levels.Whey protein is rich in l-cysteine (LC) which is the precursor of hydrogen sulfide (H2S), enhances glutathione (GSH) biosynthesis, and promotes p

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