It is important that you do not expel the air or the barium. The air is used to expand the walls of the colon for a more detailed look at the lining of your colon. After the barium and air is in, the technologist will take a series of X-rays of your colon. You will be asked to hold your breath and remain still during the picture. An imaging physician will review the images to make sure that they are sufficient to make a diagnosis. If they are not, more pictures may be taken.
However, it is not known how the builders got the huge wooden support columns into position. Unlike western architecture, in ancient Chinese wooden architecture, the wall only defined an enclosure, and did not form a load-bearing element. Buildings in China have been supported by wooden frames for as long as seven millennia.
He destroyed walls between states and ordered the main wall along the northern border of the territory to be extended. Later dynasties repaired and rebuilt the Great Wall of China along the northern border to continue to deter those northern tribes from raiding.Because the walls were built of mud, gravel, and wood, repairs were often necessary.The wall that is seen today was mainly built by the Ming Dynasty in the 1400's B.C. Most of the artisans from this later time used stronger elements in the construction such as bricks and stone.Better materials made for a much more permanent structure.ecause the walls were built of mud, gravel, and wood, repairs were often necessary. The wall that is seen today was mainly built by the Ming Dynasty in the 1400's B.C. Most of the artisans from this later time used stronger elements in the construction such as bricks and stone.