295 resultados para anomalous Eu3 5D0->F-7(0) transition
Resumo:
3ZnPb25%35%PhSCOHSrN^206Pb^204Pb^207Pb^204Pb^206Pb^204Pb1825118530156631585538.48739433^208Pb^204Pb-^206Pb^204PbN^14S1091741317^13C-21-35, ^18O16.8186DFI-50-60200^18OH2O708.8^13C^13DFI^87Sr^86Sr07140717^87Sr^86Sr0.70830709307106^87Sr^86Sr^87Sr^86Sr.
Resumo:
Jalindite)1.7250.002,0=7.951410^-7mmnm):0.395(10),0.279(8),0.178(10),0.163(8),0.1325(7),0.1260(7),0.1200(8),0.1065(10)869.34%H1.78%OH30.26%CSN
Resumo:
(MoNiPGEVAuAg (1)TommotianAtdabanianBotonianToyonian (2)()Tommotian (3)- (4)SiO2MgOCaOCO2SiO2Al2O3Fe2O3/(MoNiVU)(V/(V+Ni)V/CrNi/CoU/ThU)- (5)(REE)6.67ppm481ppm123ppmPAASCe-0.10Ce-0.100-0.10Ce-3Eu0.002-1.16Eu (6)25-GCnC14-nC31nC18nC19nC20 (7)0.05-12.314.97%(13Corg)-29.49-34.41PDB4.313carb-4.6-10.66.018Ocarb-13.7-2.3(PDB)13Corg13carbTommotian13Tommotian Tommotian-
Resumo:
9013CWUE-13C- 13C 13C-25.60-32.68C3WUE 13C =-25.60WUE13C= -32.6513C-28.52-30.74-25.60-29.7713C-27.68-32.68-26.17-30.1113CWUEWUEWUE NPK 13C13C13CWUE - -PP 13C NKCaMg FePCaKMgCa10000g/gNNaCaMgMnCuZn13CPKFe13CNKCaMgCu13CMnNa13CPFeZn13Cw(N)w(P)13Cw(N)w(P)13C 13C 30mm7 13C70-20cm13CWUE 13C /13C
Resumo:
13He/4He0.58~2.60 Ra3He/4He0.41~1.26 Ra 0.37~0.43 Ra3He/4He0.05~0.49 RaHe40Ar/36Ar309.94~454.3940Ar/36Ar409.12~1822.3140Ar/36Ar673~886325~90340Ar/36ArHe 2CO13CPDB18OSMOW-2.2~ -7.0-4.85.6~14.411.313CPDB18OSMOW-5.5~ -6.3-5.812.7~14.313.8COCO 334S-2.0~1.5 4SHeS 5
Resumo:
1. H2O-NaCl-CaCl2-CO2-CH4-H2S-F239477039.08 wt% NaCl eq.1604501.2316.53 wt% NaCl eq.1563401.234.49 wt% NaCl eq.0.371.12 g/cm30.70.9 g/cm310820 bar800 barH2O-NaCl-CaCl2-CO2-CH4-H2S-FH2O-NaCl-CaCl2-CO2-F 2. CHOSCOCO2 3. HeAr3He/4He0.0591.662 RaRa3He/4He1 Ra1.3910-640Ar/36Ar289.81071.8-4He40Ar*S 4.
Resumo:
6Li7Li35/ 1MC-ICP-MS+31.31.02+31.20.52TIMS 2HCO3-Ca2+70%50%Na+Cl- 37Li41 µg/g~92 µg/g-4.7~+0.713.26 µg/g~46.32 µg/g7Li+0.9+9.1Al2O3/SiO2Fe2O3/SiO2MnO/SiO2K2O/SiO27Li6Li 41.04 µg/L31.72 µg/L8.87 µg/LCJ17Li+7.6+28.1(CJ1) 51/Li7Li78%99% 66Li-0.9760.993---6Li
Resumo:
A novel graphitic-nanofilament-(GNF-) supported Ru-Ba catalyst is prepared and used in ammonia synthesis reaction. The Ru-Ba/GNFs catalyst shows remarkably high activity and stability for ammonia synthesis, which can be attributed to high purity and graphitization of GNFs with unique structure. TEM micrographs of the Ru-Ba/GNFs catalysts show that Ru metal particles uniformly disperse on the outer wall of GNFs, and the particles become bigger than that before ammonia synthesis reaction after 50 h of operation at 500degreesC and 7.0 MPa, probably due to the Ru crystals covered by promoter and support materials and/or sintering of Ru crystals. (C) 2002 Elsevier Science (USA).
Resumo:
A novel norvancomycin-bonded chiral stationary phase (NVC-CSP) was synthesized by using the chiral selector of norvancomycin. The chiral separation of enantiomers of several dansyl-amino acids by high-performance liquid chromatography (HPLC) in the reversed-phase mode is described. The effects of some parameters, such as organic modifier concentration, column temperature, pH and flow rate of the mobile phase, on the retention and enantioselectivity were investigated. The study showed that ionic, as well as hydrophobic interactions were engaged between the analyte and macrocycle in this chromatographic system. Increasing pH of buffers usually improved the chiral resolution for dansyl-alpha-amino-n-butyric acid (Dns-But), dansyl-methionine (Dns-Met) and dansyl-threonine (Dns-Thr), but not for dansyl-glutamic acid (Dns-Glu) which contains two carboxylic groups in its molecular structure. The natural logarithms of selectivity factors (In alpha) of all the investigated compounds depended linearly on the reciprocal of temperature (1/T), most processes of enantioseparation were controlled enthalpically. Interestingly, the process of enantioseparation for dansyl-threonine was enthalpy-controlled at pH of 3.5, while at pH of 7.0, it was entropy-controlled according to thermodynamic parameters Delta(R,S)DeltaHdegrees and Delta(R,S)DeltaSdegrees afforded by Van't Hoff plots. In order to get baseline separation for all the solutes researched, norvancomycin was also used as a chiral mobile phase additive. In combination with the NVC-CSP remarkable increases in enanselectivity were observed for all the compounds, as the result of a "synergistic" effect. (C) 2003 Elsevier B.V. All rights reserved.
Resumo:
To elucidate the physicochemical properties of silk protein, we studied the effects of calcium chloride and ethanol on the gelation of fibroin. Fibroin was treated with 5.0 M calcium chloride in water (Ca/W) or 5.0 M calcium chloride in 20% (v/v) ethanol (Ca/Et) and the rheological properties of colloidal fibroin were investigated. The Ca/W-treatment promoted an increased rate of gelation and gave higher gel strength than the Ca/Et-treatment. The maximum gel strengths of Ca/W- and Ca/Et-treated fibroins were obtained at pH 7.0 and pH 5.5, respectively. Scanning electron micrographs showed that the Ca/W-treated fibroin gel had a more developed three-dimensional molecular network than the Ca/Et-treated gel. Further, FT-IR spectra suggested that Ca/W-treated fibroin has more of a beta-structure than Ca/Et-treated one in colloidal conditions. This study indicated that the use of calcium chloride alone was more beneficial to the gelation of fibroin than combined use with ethanol.
