Anti-CFB monoclonal antibody, clone FQS0398(C)

To characterize the N2O formation and fuel nitrogen conversion in an oxy-fuel circulating fluidized bed (CFB) combustor with high oxygen concentration, tests were carried out by analysing the axial concentrations of N2O in a 50 kW(th) CFB combustor. The conversion ratios from fuel nitrogen to gaseous N-containing pollutants were calculated. The initial N2O concentrations in the bottom of the combustor were similar between oxy-fuel firing and air-firing. The axial N2O formation was more in oxy-fuel combustion than in air-firing, improving the N2O emission during 50% O-2 /50% CO2 combustion. The atmospheric variation significantly affected the conversion ratio from fuel nitrogen to N2O. In addition, the conversion from fuel nitrogen to N2O was much higher than that to NO. As a result, the N2O emission during oxy-fuel CFB combustion cannot be ignored. Gas staging little influenced the N2O emission. With the increasing ratio of secondary gas, the initial N2O formation in the dense zone increased, while the axial N2O formation along the combustor declined. By analysing the conversion ratios of fuel nitrogen, it was also found that gas staging obviously affected the conversion ratio from fuel nitrogen to NO by enhancing the NO to N-2 conversion. However, gas staging did not impact the conversion ratio from fuel nitrogen to N2O. (C) 2017 Energy Institute. Published by Elsevier Ltd. All rights reserved.

The Deccan Traps continental flood basalt (CFB) province of India contains several dyke swarms, which are dominated by tholeiitic basalts and basaltic andesites. The Southeastern Saurashtra dyke swarm, containing mainly these rock types, also contains an andesite and several rhyolites. Based on petrographic, mineral chemical, and whole-rock major and trace element and Sr-Nd isotopic data, we discuss the magmatic evolution and pressure-temperature conditions of crystallisation of these dyke magmas. The tholeiitic basalts and basaltic andesites have low to moderate TiO2 contents. The andesite and the rhyolites have low CaO, MgO, Fe(2)O(3)t, TiO2 and P2O5, and high K2O, Rb, Ba and light rare earth element contents. Thermobarometric calculations for equilibrium mineral-whole-rock pairs indicate plagioclase crystallisation at 1200-1170 degrees C, overlapping with clinopyroxene crystallisation at 1181-1143 degrees C, and a pressure range of 0.1-3.6 kbar indicating crystallisation during magma ascent or storage at shallow crustal levels. Major and trace element modelling is consistent with the rhyolites being produced by advanced fractional crystallisation of basaltic parental magmas. However, a broad trend of increasingly radiogenic Sr and nonradiogenic Nd isotopic ratios, fromthemafic rocks through the andesite to the rhyolites, suggests a combined assimilation and fractional crystallisation (AFC) process between basaltic magma and ancient granitic crust. The rhyolites contain the largest crustal contributions and display the most "enriched" Sr-Nd isotopic characteristics yet recorded from the Deccan Traps (epsilon(Nd)t =-20.6, (Sr-87/Sr-86)(t) = 0.74855). The widespread occurrence of mafic enclaves in the rhyolite dykes suggests that processes such as magma mixing may also be responsible for some of the andesitic rocks known in Saurashtra. (C) 2020 Elsevier B.V. All rights reserved.