The awarding of the 1998 Nobel Prize in Physiology or Medicine to R. F. Furchgott, L. J. Ignarro, and F. Murad for their discoveries of nitric oxide as a signaling molecule in the cardiovascular system is, without question, a highly deserved recognition of an important breakthrough in biomedical research. However, the citation by the Nobel Assembly is one more testimony to the fact that pioneer...

We investigated whether methane, ethylene and ethane gas can be detected in gas emanating from human skin, which is called skin gas. Skin gas was collected with a homemade stainless-steel trap system, which was cooled with liquid nitrogen, and analyzed with a gas chromatograph fitted with a flame ionization detector (FID). Skin-gas samples were obtained by covering a hand for 30 min with a poly...

Root architecture describes root growth over time and space. Prior studies have examined the effects of ethylene and nutrient deficiency using ethylene precursors or inhibitors in combination with nutrient deficiency. To test if ethylene gas alone could alter root architecture in young pea plants, a 30 ppb flux of ethylene was maintained through a column root zone. Although not statistically si...

Ethylene inhibits cell division, DNA synthesis, and growth in the meristems of roots, shoots, and axillary buds, without influencing RNA synthesis. Apical dominance often is broken when ethylene is removed, apparently because the gas inhibits polar auxin transport irreversibly, thereby reducing the shoot's auxin content just as if the apex had been removed. A similar mechanism may underly ethyl...

The production of chemical energy carriers utilizing electrical from renewable sources is essential for the future system. A motored piston engine may be used as a reactor to convert mechanical by pyrolysis methane and ethane; this analyzed here. modeled compression–expansion cycle with detailed kinetics. main products are hydrogen high-energy hydrocarbons such acetylene, ethylene, benzene. To ...

Plants use ethylene gas as a signal to regulate myriad developmental processes and stress responses. The Arabidopsis EIN3 protein is a key transcription factor mediating ethylene-regulated gene expression and morphological responses. Here, we report that EIN3 protein levels rapidly increase in response to ethylene and this response requires several ethylene-signaling pathway components includin...

Chemical reaction of small silicon cluster ions Sin (11 ≤ n ≤ 20) with ethylene was studied with a newly implemented Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer. Silicon clusters were generated by a pulsed laser-vaporization supersonic-expansion cluster beam source directly connected to FT-ICR spectrometer. Injected and size selected silicon clusters were thermalized to...

The presence of ethylene glycol in used motor oil is an indication of antifreeze coolant leakage into the crankcase of an internal combustion engine, thus predicting engine-wear problems. Several options for the determination of glycols currently exist, including colorimetric tests which are easy to perform, but subjective in interpretation and not particularly sensitive, fast or cost effective...

Real-time imaging of gas leaks was demonstrated using an IR camera employing outdoor thermal background radiation. Ammonia, ethylene and methane detection was demonstrated in the spectral region 7-13 microm. Imaging was accomplished using an optical filter and a gas-correlation cell matching the absorption band of the gas. When two gases, such as ammonia and ethylene, are absorbing in the same ...

One of the most important methods of transporting natural gas in Iran and other parts of the world is the utilization of a network of pipelines. Compression station and turbo compressor units play an important role in gas supply through pipelines. One of the primary concerns in these units is the reduction of fuel consumption. By cooling of exhaust gas from the source station, the pressure ...