Abstract: The present disclosure relates to menstrual fluid simulant compositions that mimic the properties of real menstrual fluid, where the menstrual fluid simulant compositions comprise vesicle dispersions of quaternary ammonium compounds and linear polymers. The present disclosure also relates to related methods and uses.

Abstract: In an agricultural working vehicle, such as a combine, an air filter for an internal combustion engine includes a generally tubular rotating filter element, an inlet, an outlet, and an aspiration port. The inlet is positioned outside the tubular filter element near a top of the air filter. An aspiration port is positioned outside the tubular filter element near a bottom of the air filter. The aspiration port leads to an ambient environment. The outlet is in communication with an inside of the tubular filter element.