BACKGROUND Nitrous oxide diffuses easily from blood into air filled spaces. Xenon is also a relatively insoluble gas, like nitrous oxide. Therefore, the authors measured xenon diffusion into obstructed bowel segments during xenon anesthesia and compared this with nitrous oxide and nitrogen diffusion. METHODS Twenty-one pentobarbital-anesthetized pigs were randomly assigned to three groups to ...

Pseudomonas aeruginosa is well adapted to grow in anaerobic environments in the presence of nitrogen oxides by generating energy through denitrification. Environmental cues, such as oxygen and nitrogen oxide concentrations, are important in regulating the gene expression involved in this process. Recent data indicate that P. aeruginosa also employs cell-to-cell communication signals to control ...

Nitrogen dioxide (NO2) is noxious, phototoxic and causes eutrophication. NO2 is one of the major precursors of ground level ozone pollution. Emission rates and emission concentrations of various pollutants from stationary sources of power plant emissions are calculated using Emission Inventory methodologies. Ground level concentrations of Nitrogen oxide (NOx) pollution are predicted by Gaussian...

BACKGROUND AND AIMS The human epidermal growth factor receptor type 2 (HER-2) seems to be sensitive to nitrogen mustard, because nitrogen mustard heavily alkylates on guanine. In this study, we examined the effects of nitrogen mustard on cell growth and expression of HER-2 proteins in cultured human breast cancer cells. METHOD The HER-2 protein levels on the cell surface of breast cancer cell...

Nitrogen-doped reduced graphene oxide (N-doped RGO) samples with a high level of doping, up to 13 wt. %, have been prepared by annealing graphene oxide under a flow of pure ammonia. The presence of nitrogen within the structure of RGO induces a remarkable increase in the thermal stability against oxidation by air. The thermal stability is closely related with the temperature of synthesis and th...

Introduction According to the National Greenhouse Gas Inventory (NGGI 2007) the agricultural sector contributes around 16% of national greenhouse gas emissions (Figure 1). The main greenhouse gases emitted from agriculture include methane lost during rumen digestion (enteric) and nitrous oxide lost from nitrogen fertilisers, animal excreta and soils (Figure 1). Agriculture accounts for 60% and ...

Nitrous oxide can be produced in soils by biological or chemical processes in which nitrogen compounds are transformed. The occurrence and course of these processes are affected by different factors, e.g. temperature, pH, aeration of the soil, availability of organic substances and availability of inorganic nitrogen (e.g. nitrate and ammonium). How these factors affect nitrogen transformations ...

The objective of this research was to seek a cost effective solution to prepare adsorbents for nitrogen oxide from surplus sludge. Leaf litter and powder coal ash were used as cheap and easily available additives. An adsorbent for nitrogen oxide was prepared by pyrolysis of dried sludge mixed with zinc chloride. Under optimum pyrolysis conditions of 375°C for 90 min and a zinc chloride content ...

Details of coupling a catalytic reaction chamber to a liquid nitrogen-cooled cryofocuser/triple quadrupole mass spectrometer for online monitoring of nitric oxide (NO) photocatalytic reaction products are presented. Cryogenic trapping of catalytic reaction products, via cryofocusing prior to mass spectrometry analysis, allows unambiguous characterization of nitrous oxide (N2O) and nitrogen oxid...