Seniors and Depression: The difference between depression and dementia. Depression is a mood disorder; dementias like Alzheimerâs disease, can have similar symptoms but they are different illnesses and have different treatment plans.
From a synthesis standpoint, nanotechnologies can be classified as variations of bottom-up technologies, such as self-assembly, or top-down technologies, such as lithographic methods (Box 1). Many nanotechnologies combine aspects of both strategies.
Nanotechnology (sometimes shortened to nanotech) is the manipulation of matter on an atomic and molecular scale.anotechnology (sometimes shortened to nanotech) is the manipulation of matter on an atomic and molecular scale.