Regiochemistry and Markovnikov's rule One of the most fundamental reactions in organic chemistry is the addition of HX to an alkene. This reaction is illusturated below, using the addition of HCl to ethylene as an example:
PhD vs EdD. The EdD is a doctorate in education. All this degree means is that your doctorate is granted by a college of education. At many universities (and some professional schools) graduate psychology programs (usually in counseling developmental, or educational/learning psychology) are housed in the college of education.
ED Vacuum Devices A vacuum constriction device (VCD) is an external pump with a band on it that a man with erectile dysfunction can use to get and maintain an erection. Penile Implants for ED A penile prosthesis or implant is an effective treatment for erectile dysfunction. Penile implant surgeries take about an hour and are typically done in an outpatient center. ED Surgery Vascular reconstructive surgery is one way to improve blood flow to the penis to help a man with erectile dysfunction get and keep an erection.