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STUDY DESIGN Analysis of volumetric wear loss of retrieved growth guidance sliding devices LSZ-4D for treatment of early onset scoliosis and laboratory in vitro wear test for comparison of wear resistance of alloys Nitinol, Ti, and cobalt chromium (CoCr). OBJECTIVE To evaluate quantitatively the amount of wear debris from the sliding LSZ-4D device and to(More)
BACKGROUND Growth guidance sliding treatment devices, such as Shilla (Medtronic, Minneapolis, MN USA) or LSZ-4D (CONMET, Moscow, Russia), used for the treatment of scoliosis in children who have high growth potential have unlocked fixtures that allow rods to slide during growth of the spine, which avoids periodical extensions. However, the probability of(More)
Numerous pyrotechnic devices are used on satellites to separate structural subsystems, deploy appendages, and activate on-board operating subsystems. The firing of these pyrotechnic mechanisms leads to severe impulsive loads which could sometimes lead to failures in electronic systems. The objective of the present investigation is to assess the relevance of(More)
Maize (Zea mays L.) is the most important staple food in the mid-hills region of Nepal. The mid-hills are characterized by steeply sloping land and complex farming systems where crops, livestock and trees are inseparable components, and maize has to compete with trees grown for fodder, fuel wood, building materials and other purposes in a landscape severely(More)
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