A radioactive iodine uptake (RAIU) test uses a radioactive tracer and a special probe to measure how much tracer the thyroid gland absorbs from the blood. The test can show how much tracer is absorbed by the thyroid gland.
Learn How to Lay Blocks. Start mixing mortar mix as instructed. The first course of blocks should be installed below floor level and inside the foundation trench. This first line of concrete blocks shall rest on top of a layer of mortar mix. Spread mortar along the sides of the block and remove the excess mortar with a trowel. Repeat until the first course has been installed. Check the course with a level. Then, even it out with a thicker layer of mortar, if it is not.
1 Use a sawing motion to pull and push the 2x4 across the concrete as you move it down the length of the forms. This sawing motion helps prevent tearing as you level the surface.  Tilt the leading edge slightly away from the direction of travel to create a thin cutting edge where the screed board meets the concrete.