Hydrogenics Corp. designs, develops and manufactures hydrogen generation and fuel cell products based on water electrolysis technology and proton exchange membrane technology. It operates through 2 segments: OnSite Generation and Power Systems.
The noun âalumnusâ means a male graduate or former student of a particular university, college, or school. The noun âalumnaâ means a female graduate or former student of a particular university, college, or school. The noun âalumniâ means male graduates or former students of a particular university, college, or school. The noun âalumnaeâ means female graduates or former students of a particular university, college, or school. Many colleges and universities use âalumniâ to refer to males and females.
Alum /ËaelÉm/ ËÃ¦lÉm is both a specific chemical compound and a class of chemical. Compounds the specific compound is the hydrated potassium aluminium (sulfate potassium) alum with the Formula K (AL so) 4 Â·2 12 H. 2o Alum is used in the treatment of canker sores in the mouth, as it has a significant drying effect to the area and reduces the irritation felt at the site. 2  Alum is the major adjuvant used to increase the efficacy of vaccines, and has been used since the 1920s.