Since the early 1900s, single series diode rectifiers have long been used in amplitude modulation signal detection. One may think that their design theory is already well matured. Let us check and see if true.

Tarlov cyst (TCs) is also called perineural cyst, which a rare disease of the posterior nerve root prevalently localized in lumbo-sacral region, however, it possible every part spinal cord. These cysts represent dilation nerve-root sheath that often communicate with subarachnoid space through valve-like mechanism containing cerebrospinal fluid (CSF) and neural tissue. asymptomatic discovered in...