Abstract The construction materials that contacted with unsymmetrical dimethylhydrazine and the desorption solutions obtained when treating contaminated surface of metals alloys water reagents were studied by chromatography mass spectrometry. Neutralization was using ozone shungite. Ozonation makes it possible to destroy toxicant molecules chemically physically adsorbed on metal constructions, ...

Highly luminescent GaAs 1~x N x alloys were successfully grown by atmospheric pressure metalorganic vapor-phase epitaxy (MOVPE). The nitrogen composition x of as high as 5.6% was obtained using trimethylgallium (TMGa), tertiarybutylarsine (TBAs) and dimethylhydrazine (DMHy) precursors. In-situ and post-growth rapid thermal annealing was performed to enhance the optical quality of the material. ...

To better understand the characteristics of coupled heat transfer in liquid rocket engines, a calculation scheme is proposed this paper. This can simulate processes, including combustion and flow thrust chamber, radiation transfer, conduction wall, coolant cooling channel, gas film chamber wall. The numerical method used each physical area, data between computing module, strategy on coupling in...

Marked differences in the rates of de novo DNA synthesis and unscheduled DMA synthesis were observed in hepatocytes and nonparenchymal cells (NPC) isolated from Fischer 344 rats following in vivo exposure to 1,2-dimethylhydrazine (SDMH) or diethylnitrosamine (DEN) for 1.5, 4, 8, 16, and 28 days. Liver cells were labeled in vivo with bromodeoxyuridine and [3H]thymidine, following which, hepatocy...

Quercetin inhibits proliferation of human gastric and colonic cancer cells in vitro by suppressing mitosis and increasing apoptosis. Quercetin might therefore act as an anticarcinogen in the alimentary tract, but previous findings have been inconsistent. We fed rats quercetin at dietary concentrations of 1, 5, 20, and 50 g/kg. At < or = 20 g/kg, we observed a statistically significant reduction...

PURPOSE Voltage-gated Kv potassium channels, like ether a go-go (EAG) channels, have been recognized for their oncogenic potential in breast cancer and other malignant tumors. EXPERIMENTAL DESIGN We examined the molecular and functional expression of Kv channels in human colonic cancers and colon of mice treated with the chemical carcinogens dimethylhydrazine and N-methyl-N-nitrosourea. The d...