The stratified wind tunnel in which the density of air gradually changes with height is available for experimental studies on thermal convective air currents under the developed thermal inversion ...layer. The convective currents do not thrust through the upper light layer, but spread out horizontally, and the circulation pattern is similar to that of the so-called heat island obtained by numerical simulation. It suggests the mechanism of the local flow patterns of urban heated and urban polluted air.
A case of primary cerebral malignant lymphoma, immunoblastic type was reported. The immunoelectrophoresis of the patient serum showed an abnormal bow of IgM lambda type. Autopsy revealed that the ...cerebral lymphoma showed no extracranial spread except for adenocarcinoma of the colon with hepatic metastasis. Ultrastracturally, some of the lymphoma cells showed plasmacytoid differentiation. Immunoperoxidase study showed intracytoplasmic polyclonal immunoglobulins in non-neoplastic plasma cells around the colonic carcinoma, in the bone marrows, and spleen. However, neither IgM nor lambda light chain was found in the cerebral lymphoma cells. The source of the macroglobulinemia in this case was discussed.
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