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.
Commonly rectangular, concrete blocks are manufactured as a solid block of concrete or with hollow chambers. Although concrete blocks are strong and durable, cracks sometimes develop. As a home or structure settles, for example, sideways or shifting force can put pressure on the concrete block, resulting in a crack.Fortunately, do-it-yourselfers can fix the damage.lthough concrete blocks are strong and durable, cracks sometimes develop. As a home or structure settles, for example, sideways or shifting force can put pressure on the concrete block, resulting in a crack. Fortunately, do-it-yourselfers can fix the damage.