Make a blog

bassteeth6

1 year ago

While B and B alluvial water types are similar they

While B1 and B2 alluvial water types are similar, they represent two different hydrochemical pathways: an example of these pathways is most obvious in the Oakey Creek alluvium. The lower CCR index values for alluvial B1 and B2 water samples shows an WH-4-023 exchange process occurs within the alluvium, where basalt-derived Ca–Mg–HCO3 and Ca–MgH–CO3–Cl water types evolve to have higher sodium composition (Na–Ca–MgCl–HCO3 water types) (Fig. 10a). However, B1 water samples with a positive CCR index are maintained as EC increases and bicarbonate is depleted, leading to Ca–Mg–Cl water types (Fig. 10b). This process is spatially restricted to the upper zones of the Oakey Creek alluvium, where adjacent basalt outcrops must provide a consistent source of calcium and magnesium (Fig. 11a). In contrast, negative CCR index values for B2 suggest atomic number cation exchange processes may occur simultaneously in the Oakey Creek alluvium as evapotranspiration proceeds, particularly in areas around Oakey.

1 year ago

Metal nanoparticles MNPs with unusual chemical physical

The synthesis of AgNiPr2 was first reported by Lappert et al. [55] to proceed from the reaction of AgNCO and M′[N(SiMe3)2] (were M′ = Sn, Pb, Yb). As for the present research work, AgNiPr2 and AgN(SiMe3)2 were prepared from either AgCl or AgNO3 (Aldrich) using standard Schlenk and glove box techniques. Although LiNR2 (R = SiMe3) BIBU 1361 commercially available, its fresh preparation (R = iPr) from the corresponding secondary amine (either diisopropilamine or hexamethyldisilazane) and stoichiometric amounts of a titrated n-BuLi (n-BuLi = C4H9Li) in hexanes was preferred. The white precipitate (either LiNiPr2 or LiN(SiMe3)2) was then filtered and dried under vacuum. Subsequently, a suspension of LiNR2 (R = iPr, N(SiMe3)) and one equivalent mol of AgCl in THF were vigorously stirred for 24 h at room temperature in darkness. The solution was filtered off the residue, concentrated to eliminate the remaining LiCl and recrystallized from THF. The general synthesis reaction of AgNR2 precursors is zygomycetes presented in Fig. 1. The resulting compounds were insoluble in most common organic solvents, but gave satisfactory microanalytical data and FT-IR analysis.

1 year ago

Conclusion A geochemical composite fingerprinting procedure has been

AcknowledgementsThis study Ximelagatran part of the research within the IWAS Initiative funded by the Federal Ministry for Education and Research (Grant-No. 2WM1027). The study was also funded by the Project Model Region Mongolia (MoMo) Grant-No. 033L003A) 'Ximelagatran' and the Helmholtz Impulse and Networking Fund through Helmholtz Interdisciplinary Graduate School for Environmental Research (HIGRADE). We thank M. Hartwig, M. Schaeffer, B. Tsedendorj, and N. Natsagnyam for their help within the expeditions and W. v. Tümpling, A.

1 year ago

Experimental Chemicals In this study TiO was commercially available

Figure optionsDownload full-size imageDownload as PowerPoint slide
prs.rt(\"abs_end\");
Keywords
Ag(0); Ag2O; Titania dioxide; Photocatalysis; Selective nitrate reduction
1. Introduction
With the utilization of soluble nitrogen-based fertilizers, consumption of animal products and production of nitrogen contained wastewater, more nitrate (NO3−) is being discharged into rivers and lakes [1]. In addition of CC0651 caused by nitrate pollution, nitrate and its metabolites, particularly nitrite (NO2−) produced from the reduction of nitrate, are toxic to human beings. Previous studies suggested that nitrate could combine with hemoglobin to form methemoglobin and caused blue baby syndrome, and nitrosamine formed from nitrite could also cause hypertension and cancers [1] and [2]. Considering the toxicity of nitrate and its metabolites to human beings, the U.S. Environmental Protection Agency (EPA) has set the maximum allowable contamination level of 10 mg L−1 of nitrate–nitrogen (NO3-N) in drinking water [3].

1 year ago

We should note that the negligible difference in

It is known that the surface (S)-SNAP 5114 γ of Ni(1 0 0) crystal\'s plane is higher than for Ni(1 1 1) plane (γ(1 0 0) > γ(1 1 1)) [21]. This fact contributes to a better wettability of Ni(2 0 0) surface. Besides, Young\'s modulus for Ni in [1 0 0] direction E[1 0 0] ≈ 121.3 GPa is twice lower than in [1 1 1] E[1 1 1] ≈ 262.2 GPa [22], and in this way high elasticity of Ni in [1 0 0] direction promotes growth of Ni(2 0 0) films on SiO2/Si(1 0 0) substrates due to the minimization of the internal stress energy [23]. Higher elasticity of Ni(2 0 0) can also contribute in deeper penetration of oxide ions into the film in comparison with Ni(1 1 1) and, in this way, leads to formation of oxides nanostructures with h(2 0 0) > h(1 1 1). It should be mentioned that the crystallographic orientation of the surface determines not only oxidation rate, but also the etching rate [24]. This gives the possibility to increase the contrast of oxide nanostructures on Ni(2 0 0) surface in comparison with Ni(1 1 1).

1 year ago

Conclusions AcknowledgementsThis work is supported by the National Natural Science

To gain insight into the structural LY2584702 and mechanical properties, the total and partial density of states (DOS) of nine Pt–Zr alloys are shown in Fig. 5, where the black vertical dashed of DOS represents the Fermi level (EF). It can be seen that the DOS profiles below EF are mainly contributed by Pt-5d state and Zr-4d state, reflecting significant hybridization between Pt and Zr atoms, forming the Pt–Zr metallic bonds along the d–d direction. For cubic structure such as PtZr2, PtZr and Pt3Zr, the DOS profile of PtZr2 could be mainly divided into two parts. The first part, extending from the bottom up to −2.74 eV, consists mainly of Pt-5d state and Zr-4d state. The last section from −2.74 eV to 1.20 eV mainly contains mixture of Pt-5d state, Zr-4d and Zr-4p states. However, the DOS profiles of PtZr and Pt3Zr are different from Pt2Zr. The area of conduction band is much bigger than pyrimidine of the area of valence band. Moreover, the Pt-5p state of PtZr and Pt3Zr is contributed in whole range. In particular, the deep valley of Pt3Zr near EF separates the Pt–Zr bonding and antibonding states. The localized hybridization near EF is origin of the strong deformation resistance.

1 year ago

Fig xA Comparison between experimental data and estimation of

Fig. 6. Comparison between experimental data and estimation of crude oil A emulsions: (a) 29 °C, 8 s−1; (b) 29 °C, 16 s−1; (c) 30 °C, 1 s−1; and (d) 31 °C, 4 s−1.Figure optionsDownload full-size imageDownload as PowerPoint slide
The accuracy of estimation ETP-46464 encouraging from the 'ETP-46464' viewpoint of engineering application. For the emulsions of all crudes and at all temperatures and shear rates, the maximum average AAD based on a shear rate is 9.4% in part 2, and the maximum average AAD based on a shear rate is 17.9% in part 1, i.e. the first 20 s.
5. Conclusions
AcknowledgmentsSupports from the National Natural Science Foundation of China (Grant nos. 51134006, 51404072) and the Science Foundation of China University of Petroleum – Beijing (Grant no. LLYJ-2011-55) are hypotonic gratefully acknowledged.
Appendix ASee Table A1 and Fig. A1.Table A1.
Equilibrium time at different shear rates for oil B and oil C emulsions.SampleTemperatureShear rateEquilibrium time(oC)(s−1)(s)Oil B with 60% water cut332504446684141233016179Oil C with 20% water cut301472235843178139Full-size tableTable optionsView in workspaceDownload as CSVFig. A1. Comparison between experimental data and estimation of crude oil B emulsions: (a) 33 °C, 12 s−1; (b) 34 °C, 8 s−1; (c) 35 °C, 2 s−1; and (d) 36 °C, 4 s−1.Figure optionsDownload full-size imageDownload as PowerPoint slideAppendix BSee Table B1 and Fig. B1.Table B1.