Abstract This article analyzes the cause of an abnormal defect in oil chromatogram a transformer, and puts forward control measures suggestions. It is analyzed that phase A B main transformer poor contact o f dynamic static contacts unloaded tap changer, high temperature overheatin g, development ablation, resulting chromatogram. The ablation no-load tap-changer may be due to installation trans...

Plasma taken from hepatic failure rats induced by D-galactosamine was used to observe the variatiation in its chromatogram obtained by conducting a high performance gel-chromatography (TSK G2000SW used). The progress of hepatic failure caused distinct increase in the 12 abnormal peaks, especially peak b contained middle moelcular weight substances, which showed a good correlation with the condi...

Mentha piperita and Citrus sinensis was an aromatic plants well known for its fragrance and distinct aroma. In this prospective study to evaluate the chromatogram detection of ethanol extract of Mentha piperita and Citrus sinensis with standard flavonoid marker eriocitrin by HPTLC technique. HPTLC chromatogram was developed in ethanolic extract of Mentha piperita, Citrus sinensis and standard f...

In this paper, visualization and neural network techniques are applied together to a power transformer condition monitoring system. Through visualizing the data from the chromatogram of oil-dissolved gases by 2-D and/or 3-D graphs, the potential failures of the power transformers become easy to be identified. Through employing some specific neural network techniques, the data from the chromatog...

Markey and Abramson [1] developed a microwave-powered chemical reaction interface, a device which converts a complex organic molecule in the presence of a reactant gas into small stable molecules which are detected by mass spectrometry. For a given reactant gas the molecules formed are a representation of the elemental composition of the original anlayte. The combination of the reaction interfa...

In each sample run, comprehensive two-dimensional gas chromatography with dual secondary columns and detectors (GC × 2GC) provides complementary information in two chromatograms generated by its two detectors. For example, a flame ionization detector (FID) produces data that is especially effective for quantification and a mass spectrometer (MS) produces data that is especially useful for chemi...