Study of an aquifer contaminated by ethyl tert-butyl ether (ETBE): site characterization and on-site bioremediation.

Ethyl tert-butyl ether (ETBE) was detected at high concentration (300mgL(-1)) in the groundwater below a gas-station. No significant carbon neither hydrogen isotopic fractionation of ETBE was detected along the plume. ETBE and BTEX biodegradation capacities of the indigenous microflora Pz1-ETBE and of a culture (MC-IFP) composed of Rhodococcus wratislaviensis IFP 2016, Rhodococcus aetherivorans IFP 2017 and Aquincola tertiaricarbonis IFP 2003 showed that ETBE and BTEX degradation rates were in the same range (ETBE: 0.

Influence of hypercapnia on the cerebrovascular activities of some drugs used in the treatment of cerebral ischemia.

The effects of twelve substances on local cerebral blood flow (LCBF) were studied in the normocapnic and hypercapnic conscious rabbit. In normocapnia, an increase in LCBF was observed after naftidrofuryl (NAF), cinnarizine (CI), viquidil (VI) and heptaminol acefyllinate (HA). The LCBF was only slightly increased or unchanged after hydrogenated ergot alkaloids (HEA), cyclandelate (CY), hexobendine (HE), ifenprodil (IF), piridoxilate (PI), vincamine (VC) and xantinol niacate (XN).