Jörg Spengler

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An aqueous mixture of p-phenylenediamine dihydrochloride, resorcinol and hydrogen peroxide, incubated for 30 min at 37 degrees C, was not mutagenic in the Ames test and in the mouse lymphoma assay and did not produce chromosome aberrations in human lymphocytes, whereas the same mixture without resorcinol was mutagenic in the Ames test and the chromosome(More)
20 non-related patients suffering from autosomal dominantly polycystic renal disease were HLA-A, -B, -C and -DR typified and the HLA frequencies were compared with the normal population. Tissue typing was performed using the lymphocytotoxicity test using 180 well-characterized test sera. In contrast to the literature no significant differences were found.(More)
Abgrenzung der Areale fiir Abwehrund Fluehtre~k~ion im Hirnstamm Verwendung fund 1, werden zur gleichzeitigen t~eizung subcortiealer AreMe eoaxiale Elektroden mit aktiven Oberflgchen yon ca. 0,15 mm 2 fiir die differente und ca. 0,65 mm 2 ffir die indifferenteElektrode verwendet.Zur simultanen und erdschluftfreien l~eizung wird der Ausgangsimpuls eines(More)
The partial oxidation of propane and the mechanism of selective catalytic reduction (SCR) of NO by propane over Ga2O3/Al2O3 in excess of O2 have been investigated using in situ Fourier transform infrared spectroscopy. An optimized Ga2O3/Al2O3 catalyst shows high activity and efficiency of the reducing agent propane (100% conversion of NO at 623 K, GHSV:(More)
In einem umschriebenen Bereich des vorderen Hypothalamus wird eine enge topographische Beziehung zwischen arteriellen Gefäßen und Ganglienzellen festgestellt, welche die Gefäße bei ihrem Durchgang durch den Hypothalamus umhüllen. Der Zusammenhang dieser Ganglienzellen über Axone mit dem neurosekretorischen System wird beschrieben. Dieser Zusammenhang läßt(More)