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The feasibility of using the SOI-MOSFET as a quasi-diode to replace the Schottky-barrier diode in the Schenkel circuit is examined by device simulations primarily and experiments partly. Practical expressions of boost-up efficiency for d. c. condition and a. c. condition are proposed and are examined by simulations. It is shown that the SOI-MOSFET-based quasi-diode is a promising device for the Schenkel circuit because high boost-up efficiency can be gained easily. An a. c. analysis indicates that the fully-depleted condition should hold to suppress the floating-body effect for GHz-level RF applications of a quasi-diode.
Permanent waving is very popular in
Japan. Polypeptide chains (main chains) form the principal components of hair,
and they are lined up longitudinally. Hair relaxation is also called straight
permanent waving, and there are methods that change curly or wavy hair into
straight hair. Hair damage as a result of winding, combing, and using high-temperature
hairdressing irons is also often seen. By using scanning electron micrographs
(SEM) we showed broken hairs and hair damage caused by permanent wave
solutions. The hair damage is obvious when comparisons are made with the condition
of the hair surface, condition of the cuticle, etc. Hair swelling by permanent
wave solutions, manipulations such as winding, etc., inadequate rinsing with
water, procedures on injured hair at the outset, etc., are considered possible
reasons for any of these types of injury.