(August 2012) Although lupus usually occurs alone, many people with lupus sometimes have symptoms characteristic of one or more of the other connective tissue diseases, like rheumatoid arthritis, scleroderma, Sjogren's syndrome, polymyositis-dermatomyositis, and various forms of vasculitis.he differentiation between someone who has rheumatoid-like arthritis and lupus vs. someone who has rheumatoid arthritis/SLE overlap is either an issue of severity of the findings or more likely a matter of semantics with no significant clinical difference.
Question 1. An oscilloscope is a very useful piece of electronic test equipment. Most everyone has seen an oscilloscope in use, in the form of a heart-rate monitor (electrocardiogram, or EKG) of the type seen in doctorâs offices and hospitals.
8 Hints For Better Spectrum Analyzer Measurements. The spectrum analyzer, like an oscilloscope, is a basic tool used for observing signals. Where the oscilloscope provides a window into the time domain, the spectrum analyzer provides a window into the frequency domain, as depicted in Figure 1.