The removal of mixtures of gas-phase pollutants released from formaldehyde- and formaldehyde resin-producing industries was studied in different bioreactor systems. The waste gases contained formaldehyde, methanol, dimethylether and carbon monoxide. The use of a hybrid two-stage bioreactor, composed of a biotrickling filter and a conventional biofilter connected in series, led to very high elim...

MoOx species dispersed as small domains on Al2O3, ZrO2, and SnO2 catalyze the oxidative conversion of dimethylether to formaldehyde with high primary selectivity (80–98% HCHO, CH3OH-free basis) at low temperatures (500–550 K). The reaction appears to proceed via redox cycles using lattice oxygen and turnover rates increase with the size and reducibility of MoOx domains. Dimethylether conversion...

The production, isolation, chemical and physical characteristics and biological properties of the new antiviral antibiotics, xanthocillin X monoand dimethylether, and methoxy-xanthocillin X dimethylether are described. They were produced by two strains of Aspergillus sp. isolated from soil samples. The active principles were extracted from the mycelium, and isolated as yellowish crystals. They ...

Effects of XME, XDE and XTE (xanthocillin X monoand dimethylether, and methoxy-xanthocillin X dimethylether) on multiplication of Newcastle disease virus (NDV) and on proliferation of chick embryo fibroblast cells (CEF) were examined. At low multiplicity, XME, XDE and XTE suppressed CPE at low concentrations. At high multiplicity, XME (10 mcg/ml) completely inhibited occurrence of CPE and synth...

two new prenylated flavonoids, named scariosin (1) and isorhynchospermin (2) were isolated from the leaves of paracalyx scariosa together with kaempferol, quercetin, kaempferol 3-o- rutinoside and rutin. the structures of (1) and (2) were characterized as 8-c- prenyl- taxifolin 7,3'-dimethylether and 6-c-prenylquercetin 7,4'-dimethylether by their chemical and spectra data, respectively.

OBJECTIVE Our aim was to test a new cryosurgical wart treatment, dimethylether (Histofreezer), for clinical effi-cacy in newly diagnosed cases of genital warts. METHODS All patients of the gynecology clinic of a teaching hospital who were at least 12 years of age and who had between one and eight external genital warts were eligible. Treatment occurred at the initial visit and at follow-up vi...

Depolarized dynamic light scattering (DLS), dielectric relaxation (DS), and deuterium NMR studies of fragile van der Waals glass forming liquids phenylphthalein-dimethylether (PDE) and cresolphthalein-dimethylether (KDE) are presented. In PDE a new dielectric loss process was found, which can be attributed to the 180 degrees flip of the phenyl rings. The previous finding that the distribution o...

Two new prenylated flavonoids, named scariosin (1) and isorhynchospermin (2) were isolated from the leaves of paracalyx scariosa together with kaempferol, quercetin, kaempferol 3-O- rutinoside and rutin. The structures of (1) and (2) were characterized as 8-C- prenyl- taxifolin 7,3'-dimethylether and 6-C-prenylquercetin 7,4'-dimethylether by their chemical and spectra data, respectively.