Street dust samples have been collected in different areas in Hong Kong associated with various levels of traffic and pedestrian flow, and the concentrations of 23 chemical elements have been determined using energy dispersive X-ray fluorescence (EDXRF). The 23 studied elements were Na, Al, Si, Cl, Ti, Ba, V, Cr, Mn, Fe, Co, K, Ca, Ni, Cu, Zn, As, Pb, Rb, Sr, Y, Zr and Sn. A profile for average...

Geospatial dataset of trace elements including manganese (Mn), iron (Fe), titanium (Ti), rubidium (Rb), strontium (Sr), thorium (Th), Vanadium (V) and Zirconium (Zr) of near-surface soils in a Cu-Ni prospecting field at Airstrip North, Central Botswana were statistically analysed. Grid sampling method was used in the field data collection. The relatively new portable X-ray fluorescence spectrom...

Ten UsOs reference materials certified for impurities were used to develop the analytical procedure. A sequential wavelength dispersive X-ray spectrometer was used to perform the measurements. The measurement conditions were optimized to assure the best signal to background ratios and the minimum spectral interferences. Nineteen elements (Al, Bi, Ca, Co, Cr, Cu, Fe, Mg, Mn, MO, Na, Ni, Pb, Si, ...

The secondary phase, such as Ni$_3$Al-based $L1_2$ $\gamma^\prime$, is crucially important for precipitation strengthening of superalloys. Composition-structure-property relations provide useful insights guided alloy design. Here we use density functional theory combined with the multiple scattering to compute dependencies structural energies and equilibrium volumes versus composition ternary N...

Highly crystalline and surface-modified Zr-doped TiO(2) nanorods were successfully prepared using a nonhydrolytic sol-gel method that involves the condensation of metal halides with alkoxides in anhydrous trioctylphosphine oxide (TOPO) at either 320 or 400 degrees C. In addition, the interaction of the cross-condensation between the Ti and Zr species was studied by characterizing the morphologi...

The influence of colour type, sex and age (ontogenetic stage of fur cycle) on the concentration of As, Br, Ca, Cl, Co, Cr, Cu, Fe, K, Mn, P, Pb, Rb, S, Se, Sr, Ti, V, Zn, and Zr in nutria fur was studied in two body areas – the back (dorsal) and the belly (ventral). The concentration of elements was determined by the method of disperse roentgen fluorescent spectrometry. The results were evaluat...

Ti:N i2ln, Zr2Co2ln, and Zr^Pd^In were synthesized by reacting the elements in an arcmelting furnace and subsequent annealing at 1070 K. The compounds were investigated by X-ray diffraction on both powders as well as single crystals. Z rC o iIn adopts the ordered UjSi: type structure: P4/mbm, a = 720.54(7), c = 331.59(4) pm. The structure consists of planar [Co2lnj layers with C02 dumb-bells wh...

A powder library of layered Li(Ni,Co,Ti)O2 (Ni ≤ 0.8, Ti ≤ 0.2) compounds was prepared by electrostatic spray deposition. From powder x-ray diffraction patterns, most of the powder library sintered at 700 ○C was indexed as a single phase belonging to the space group R[Formula: see text]m. These results were almost identical to those obtained from a study by combinatorial exploration. We investi...

a r t i c l e i n f o Based on previous reports, showing that zirconium alloying to Ti 1 − x Al x N hard coatings can increase their thermal stability, we study in detail the interaction of bias potential and Al content on structure, hardness, thermal stability, and oxidation resistance of arc evaporated Ti 1 − x − y Al x Zr y N hard coatings. For moderate Al-contents, Ti 0.49 Al 0.44 Zr 0.07 N...

A comprehensive thermochemical database is constructed based on high–throughput first-principles phonon calculations of over 3000 atomic structures in limited concentrations Ni, Fe, and Co alloys involving a total 26 elements including Al, B, C, Cr, Cu, Hf, La, Mn, Mo, N, Nb, O, P, Re, Ru, S, Si, Ta, Ti, V, W, Y, Zr, providing data largely unavailable from existing experiments. The can be emplo...