Sentence examples for nitrogen up from inspiring English sources

Thermogravimetric analysis of the tobacco material revealed the major thermal behaviour in air and nitrogen up to 900 °C.

The resulting materials exhibited large pore volumes of up to 4.38 cm3/g, bimodal porosity (pores centered at approximately 3 and 24 28 nm) and contained high levels of bulk and surface nitrogen (up to 10 wt% and 5.8 at.%, respectively).

Surface analysis of these samples was carried out by Auger electron spectroscopy (AES), revealing a high atomic concentration of nitrogen (up to 60%) in the as-implanted Si wafer, besides the presence of different impurities as oxygen and carbon in significant quantities.

The burning velocity of premixed carbon monoxide nitrous oxide flames (background water levels of 5 to 15 ppm) has been determined experimentally for a range of fuel oxidizer equivalence ratio φ from 0.6 to 3.0, with added nitrogen up to a mole fraction of XN2 = 0.25, and with hydrogen added up to XH2 = 0.005.

Increasing the N2 fraction (> 5%) in the gas mixture resulted in a significant decrease of the film hardness and in a rapid rise in their electrical resistivity and oxidation resistance in air at elevated temperatures due to a growing volume fraction of an amorphous phase with a high content of nitrogen (up to 52 at.%) in the materials.

Carbonaceous materials ranging from soft carbons of moderate nitrogen content (up to 2.5 wt.%) to typical hard carbons with an excess of nitrogen (up to 6 wt.%) were produced by carbonisation at 1050 °C of coal-tar pitch (CTP polyacrylonitrile blends with various ratio of the components.

This enabled Graham and colleagues to track where the seabird-deposited nitrogen ended up.

After complete exposure, the cartilage was immersed in liquid nitrogen for up to 3 months.

Typically, the NUE definitions relate the shoot biomass or grain generated to the nitrogen taken up or the nitrogen which was available to the plant4,5.

Correction terms for non-hydrocarbons of carbon dioxide and nitrogen were up to 87.8 and 82.8 of mole percent, respectively.

Since the 1960s the amount of fertiliser used by farmers has increased sixfold, and not all of that extra nitrogen ends up in their crops.