Seawall construction is possible on a community scale. There are many examples of ad-hoc construction to protect individual properties and communities. However, ad-hoc seawalls are likely to give much less consideration to the water levels, wave heights and wave loadings during an extreme event.
Leukocyte esterase (LE) is a urine test for the presence of white blood cells and other abnormalities associated with infection.he leukocyte esterase (LE) test detects esterase, an enzyme released by white blood cells. Positive test results are clinically significant. The LE test is also used to screen for gonorrhea and for amniotic fluid infections.
Quick Answer. A positive leukocyte esterase test indicates the individual may have a urinary tract infection, according to MedlinePlus. In order to confirm the infection, the lab examines the urine under a microscope to detect the presence of white blood cells. The test involves normal urination and causes no discomfort.