Renal agenesis. Renal agenesis is a medical condition in which one (unilateral) or both (bilateral) fetal kidneys fail to develop.
Polycrystalline cells are composed of multiple silicon crystals, which is a cheaper way to manufacture solar modules. Put simply, these cells are easier for a factory to produce, so they are less expensive. Polycrystalline cells are made by several methods, but most commonly with a cast of molten silicon.
1 A black synthetic diamond, specifically CVD polycrystalline diamonds or HPHT polycrystalline compact diamonds. 2  Black Diamond and Black Diamond II, a low-Îº material developed by Applied Materials used in semiconductor manufacturing.