Notes 9: Impedance of Overhead Lines

Jun 21st, 2015
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The series impedance of any conductor has two parts to it – resistance and reactance. We will discuss resistance briefly first and then spend significant effort in considering the reactance.

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Case ReportIRRITANT CONTACT DERMATITISby:RIDZA WISDA ARVIKA0807101010111Supervisor:dr. Nanda Earlia, Sp.KKDERMATOLOGY AND VENEROLOGY DEPARTMENTSCHOOL OF MEDICINE SYIAH KUALA UNIVERSITYBLUD RSUZA - BANDA ACEH2012INTRODUCTIONContact dermatitis is a generic term applied to acute or chronic inflammatory reactions to substances that come in contact with the skin1. This also is a common problem that can be encountered in many settings. The majority of cases are irritant-induced, with 20% being attribute to an allergic etiology2. Irritant contact dermatitis (ICD) is a cutaneous response to contact with an external chemical, physical, or biological agent; endogenous response such as skin barrier function and pre-existing dermatitis also play role3. ICD account for 80 percent of all cases of contact dermatitis, and is often occupation-related.Contact dermatitis is especially common in the work-place, accounting for 90% of occupational skin disease or 7% of all occupational disease4. ICD is a multi-factorial disease where both exogenous (irritant and environmental) and endogenous (host) factors play a role.Irritant contact dermatitis has a spectrum of clinical features which can be divided into several different categories, depending on the irritant, exposure pattern, mechanical, thermal, climatic, and constitutional factors. At least 10 clinical types of ICD have been described such as Acute ICD, Delayed acute ICD, Irritant reaction, Chronic reaction, Tr

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