Pitting corrosion is one of the most common forms of localized corrosion. Corrosion pit results in a stress concentration and fatigue cracks usually initiate and propagate from these corrosion pits. Aging structures may fracture when the fatigue crack reaches a critical size. This paper experimentally simulates the effects of pitting morphologies on the static and fatigue behavior of steel bars...

Government retains for itself, and others acting on behalf, a paid-up, nonexclusive, irrevocable worldwide license and said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government. The purposes of this project are to (1) minimize the environmental discharge of hydrocarbons and treatment chemica...

Pitting corrosion seriously harms the service life of oil field gathering and transportation pipelines, which is an important subject prevention. In this study, we collected data pipeline steel immersion experiment established a pitting judgment model based on machine learning algorithm. Feature reduction methods, including feature importance calculation pearson correlation analysis, were first...

To cite: Nijsse B, Roks G. BMJ Case Reports Published online: 28 November 2012 doi:10.1136/bcr-2012007347 DESCRIPTION A 73-year-old man presented with paresthesias of the fingertips and weakness of the abductor pollicis brevis muscle and the opponens pollicis muscle of both hands. Carpal tunnel syndrome (CTS) was suspected and confirmed by electromyography. The presence of swelling and pitting ...

Nails can act as a protective, defensive and beauty cover of the phalanges. The dermatologic disorders as well as the systemic diseases and trauma can produce change in the nails. Normal variations of nails are important to recognize and distinguish from nail diseases. There is not enough information about the prevalence of nail disorders in children. In this study, we have determined the preva...

Chronic cutaneous lupus erythematosus is a polymorphous autoimmune disease which may mimic some other clinical conditions, causing diagnostic difficulties. Acneiform lesions, including comedones and pitting scars are occasionally atypical presentations of cutaneous discoid lupus erythematosus.