Dugwayâs Chemical Test Division successfully tests JCAD system on Stryker. Caged in a menacing looking metal grid with intricate sensory equipment attached to all sides the Armyâs M113 NBC RV Stryker vehicle sits on a dusty road at Dugway Proving Groundâs target S grid being readied by its crew for testing....
The following conditions are when secondary curvatures of the spine  develop:   Cervical-when the baby starts to hold its head up   Lumbar-when the baby starts to â¦ walk. 4 people found this useful.
Heart valve conditions, such as mitral stenosis (a narrowing of the mitral valve), can also cause secondary PH. Fixing the valve usually reverses the PH. Pulmonary Hypertension in Children. Some children with congenital heart disease have high blood pressure in their lungs. This is called pulmonary hypertension.