The advantage of the batch column is reducing the number of cuts from 2 to 1 and reducing the reflux ratio from 3 to 2 to save time and money. The NaOH used in excess can be reduced from 8% to 1%. The reduction of NaOH allows cost savings for both the NaOH and the H 2 SO 4.he advantage of the batch column is reducing the number of cuts from 2 to 1 and reducing the reflux ratio from 3 to 2 to save time and money. The NaOH used in excess can be reduced from 8% to 1%. The reduction of NaOH allows cost savings for both the NaOH and the H 2 SO 4.
Mediastinal lymphadenopathy or mediastinal adenopathy is an enlargement of the mediastinal lymph nodes.ediastinal lymphadenopathy or mediastinal adenopathy is an enlargement of the mediastinal lymph nodes.
LYMPHADENOPATHY ON CT. Bilateral symmetric hilar and right paratracheal mediastinal adenopathy, as in this patient, is the most common pattern of lymphadenopathy in sarcoidosis. Computed tomography shows para-aortic and retrocaval lymphadenopathy. CT can demostrate enlarged lymph nodes which are not visible on radiographs. There is an enlarged ...ilar lymphadenopathy has not been found to develop or increase after a patient has presented with Stage III sarcoidosis. If a patient with only parenchymal lung disease on a chest radiograph developes or has an increase in lymphadenopathy, the patient either has an incorrect diagnosis or a second disease.