The classic case is ketchup which will not come out of the bottle until you stress it by shaking.There are also fluids whose strain rate is a function of time. Fluids that require a gradually increasing shear stress to maintain a constant strain rate are referred to as rheopectic.
acute appendicitis. See APPENDICITIS. aÂ·cute apÂ·penÂ·diÂ·ciÂ·tis. Inflammation of the appendix, usually resulting from bacterial infection, which may be precipitated by obstruction of the lumen by a fecalith; symptoms include periumbilical colicky pain, vomiting, among others.
Types of Appendicitis. There are four type of appendicitis. Acute appendicitis; Sub-acute appendicitis; Recurrent appendicitis; Chronic appendicitis; Acute Appendicitis. Acute appendicitis is the most common surgical condition of the abdomen. Acute appendicitis may occur at all ages, but is most commonly seen in the second and third decades of life. There is hardly any difference of gender incidence, but this condition seems to be more commonly seen in teenage girls. Sub-acute appendicitis. The sequence given in acute appendicitis is not inevitable.