An anal fissure is a superficial tear near the anus, often caused by constipation or hard stools. You can typically treat acute fissures at home if symptoms have lasted fewer than 6 weeks. At-home ...

Anal dilators are devices used to gradually stretch the anus, either for medical purposes like recovery after anorectal procedures or to prepare for comfortable anal penetration during sexual activity ...

Reaction kinetics and dynamics refers to the study of why, how and how fast chemical processes take place. Chemists seek to understand the details of change at the molecular and quantum level and how ...

The authors report a cobalt-catalyzed enantioselective intermolecular [3 + 2] cycloaddition between cyclopropenes and terminal alkynes, providing a modular approach to access structurally diverse ...

ACS' new podcast Chain Reaction explores how chemistry shapes the world around us, from the materials we use every day to the environment that we depend on. Each episode brings fresh perspectives and ...

Many runners feel occasional aches pop up, especially as mileage increases. Most of the time, with rest, strength training, and recovery practices, you can address the discomfort. But certain types of ...