A 10,000 year record of dune activity；dust storms；and severe drought in the central Great Plains

IEECAS SKLLQG

Synthesis and characterization of nano-scale Terbium (III)-trimesic acid (TMA)-1,10-phenanthroline(phen) luminescent complex

The nano-scale luminescent complex of Terbium(III)-trimesic acid (TMA)-1,10-phenanthroline(phen) was successfully synthesized by co-precipitation method in this paper. The chemical formula of the synthesized complex was speculated to be Tb(TMA)(phen)(0.0125)center dot 5H(2)O by elemental analysis, inductively coupled plasma-atomic emission spectroscopy (ICP-AES), and Fourier-transform infrared spectroscopy (FTIR). XRD pattern of Tb(TMA)(phen)(0.0125)center dot 5H(2)O indicated that it was a new crystalline complex since the diffraction angle, diffraction intensity and the distance of crystal plane were all different from those of the two ligands. TG curve proved that the synthesized nano-scale luminescent complex was stable in the range from ambient temperature to 464 degrees C in air. TEM images showed that the complex was spherical shape with an average size of 40 nm.

STRUCTURE OF 1,10-DIAMINODECANE TETRACHLOROZINCATE

[NH3(CH2)10NH3][ZnCl4], M(r) = 381.51, triclinic, P1BAR, a = 7.296 (1), b = 10.110 (3), c = 12.814 (4) angstrom, alpha = 90.84 (2), beta = 101.17 (2), gamma = 92.52 (2)-degrees, V = 926.13 angstrom 3, Z = 2, D(x) = 1.37 Mg m-3, lambda(Mo K-alpha) = 0.71073 angstrom, mu = 1.925 mm-1, F(000) = 396, T = 298 K, final R = 0.070 for 1237 unique reflections [I > 3-sigma(I)]. The structure is characterized by layers of inorganic ions sandwiched between layers formed by the paraffinic chains.

STRUCTURE OF CIS-DIAQUABIS(1,10-PHENANTHROLINE)ZINC SULFATE HEXAHYDRATE

[Zn(C12H8N2)2(H2O)2]SO4.6H2O, M(r) = 665.98, triclinic, P1BAR, a = 10.070 (4), b = 12.280 (3), c = 13.358 (2) angstrom, alpha = 109.12 (2), beta = 92.58 (2), gamma = 110.85 (2)-degrees, V = 1433.9 (7) angstrom 3, Z = 2, D(x) = 1.54 g cm-3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 10.1 cm-1, F(000) = 692, T = 293 K, R = 0.044 for 3985 observed reflections. The Zn atom is coordinated in a distorted octahedral geometry by four N atoms from two 1,10-phenanthroline (phen) ligands and two water molecules. The intermolecular ring-stacking interactions between the phen ligands occur in two forms: infinite chains and discrete dimers. Hydrogen bonds further stabilize the structure.

Levantamento pedológico detalhado (1:5.000) da Unidade de Pesquisa e Desenvolvimento de Tatuí (APTA Sudoeste Paulista - SAA - SP)

Relato da distribuição dos solos e de seus atributos identificados no levantamento pedológico detalhado da Unidade de Pesquisa e Desenvolvimento de Tatuí, Polo Regional Sudoeste da Agência Paulista de Tecnologia do Agronegócio (APTA-SAA-SP).

Síntese do levantamento de reconhecimento de baixa e média intensidade dos solos da Folha Cedro (Escala 1:100.000)

2007

Síntese do levantamento de reconhecimento de baixa e média intensidade dos solos da Folha Cedro (Escala 1:100.000)

2007

Síntese do levantamento de reconhecimento de baixa e média intensidade dos solos da Folha Jardim (Escala 1:100.000)

2007

Levantamento semidetalhado dos solos da bacia Rio Jardim-DF escala 1:50.000.

2000

Levantamento semidetalhado dos solos da bacia do Olaria - DF escala 1:30.000.

2000

Levantamento de reconhecimento de média intensidade dos solos do Parque Nacional da Serra dos Órgãos - Parnaso, Rio de Janeiro, escala 1:100.000.

2008

Levantamento de solos do Parque Nacional de Brasília, escala 1:50.000.

2008

Análisis mesoclimático de las cartas topográficas Santa Rosa y Villa María (1:250.000) de la provincia de Córdoba (Argentina)

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Field test of multiple 1/10 scale tidal turbines in steady flows

Queen's University Belfast and Wave Barrier Ltd have developed a tidal testing platform to test hydrokinetic turbines at medium scale. Multiple turbines can be pushed through still water conditions, in steady-state pushing tests. Experiments were conducted to evaluate the interactions between two identical, mono-strut, horizontal axis tidal turbines (HATTs) of 1.5 m diameter (D) rotor. Their relative performance when located individually, in-plane and in-line are investigated. The data shows a high consistency in the power curves at different flow speeds, which indicates high repeatability in this Reynolds range. For an individual turbine, there is no performance difference when the rotor is mounted either upstream or downstream of the supporting structure. When placed in-plane, the turbines have no adverse effect on one another. When spaced in-line with 2D separation, there is a 63% reduction in the performance of the downstream turbine. At 6D downstream this performance reduction is still 59%, indicating some wake recovery between 2D and 6D, though the influence from the upstream rotor persists to at least 6D downstream of the first device. In contrast the performance of the downstream turbine when placed at 1.5D offset of the upstream device at 6D downstream is approximately recovered to the individual turbine performance.