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101.
L. Kofler und E. W. Blank 《Fresenius' Journal of Analytical Chemistry》1934,99(7-8):281-282
Ohne Zusammenfassung 相似文献
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A new redox indicator reaction between Cu(2+), Mn(2+) and S(2)O(3)(2-) in the presence of 2,2'-bicinchoninic acid is investigated. Optimum reaction conditions are determined. The influence of nonaqueous solvents on the reaction rate is studied. It is shown that in the presence of acetone the S(2)O(3)(2-) determination limit is lowered 0.005 mug ml(-1). Random errors lie within the limits allowable at the determination of microconcentrations. To raise the sensitivity of the determination of S(2)O(3)(2-) in some inorganic salts (KCl, KNO(3), CsNO(3)), this impurity was concentrated by low-temperature directed crystallisation. Metrologic characteristics of the developed technique are presented. 相似文献
106.
J. Giovinazzo B. Blank C. Borcea M. Chartier S. Czajkowski G. de France R. Grzywacz Z. Janas M. Lewitowicz F. de Oliveira Santos M. Pfützner M.S. Pravikoff J.C. Thomas 《The European Physical Journal A - Hadrons and Nuclei》2001,10(1):73-84
Decay studies of very neutron-deficient nuclei ranging from 39Ti to 49Ni have been performed during a projectile fragmentation experiment at the GANIL/LISE3 separator. For all nuclei studied in
this work, 39, 40Ti, 42, 43Cr, 46Mn, 45, 46, 47Fe and 49Ni, half-lives and decay spectra have been measured. In a few cases, γ coincidence measurements helped to successfully identify
the initial and final states of transitions. In these cases, partial decay scheme are proposed. For the most exotic isotopes,
39Ti, 42Cr, 45Fe and 49Ni, which are candidates for two-proton radioactivity from the ground state, no clear evidence of this process is seen in
our spectra and we conclude rather on a delayed particle decay.
Received: 26 July 2000 / Accepted: 20 December 2000 相似文献
107.
Tanya M RamondGustavo E Davico Fredrik HellbergFredrik Svedberg Peter SalénPatrick Söderqvist W.Carl Lineberger 《Journal of Molecular Spectroscopy》2002,216(1):1-14
The 364-nm negative ion photoelectron spectra of XO and OXO molecules (X=Ni, Pd, and Pt) are reported. The spectra yield the electron affinities (EAs): EA(NiO)=1.455±0.005 eV; EA(PdO)=1.672±0.005 eV; EA(PtO)=2.172±0.005 eV; EA(ONiO)=3.043±0.005 eV; EA(OPdO)=3.086±0.005 eV; EA(OPtO)=2.677±0.005 eV. In addition, for the diatomics, transitions from the anion X?2Π3/2 and X?′2Π1/2 states into neutral X?3Σ−, 3Π, and for NiO and PdO, 1Π, are assigned. Several states have been reassigned from those in the existing literature. Anion 2Π3/2-2Π1/2 spin-orbit splittings are measured, as are neutral 3Π2-3Π1 spin-orbit splittings: the XO 3Π 2-3Π1 splittings increase from 405±30 cm−1 (NiO) to 805±30 cm−1 (PdO) to 3580±40 cm−1 (PtO). A bond length shortening of 0.03±0.01 Å is measured upon electron detachment from NiO−, resulting in an anion bond length of 1.66±0.01 Å. The bond length does not change upon electron detachment from PdO− using 3.4-eV photons. The Pt-O bond length decreases by 0.035±0.010 Å in the 3Π1←2Π3/2 transition. The spectrum of OPtO displays a significantly more extended vibrational progression than those of ONiO or OPdO, and the O-Pt bond length is found to decrease by 0.07±0.01 Å upon electron detachment. The spectra support the view that the Ni-O bond is largely ionic, the Pd-O bond is somewhat less so, and the Pt-O bond displays a substantial covalent character. 相似文献
108.
É. S. Zolotovitskaya L. V. Glushkova T. V. Kozulya A. B. Blank 《Journal of Applied Spectroscopy》1997,64(3):410-413
A method of the atomic-emission spectrum analysis of soil has been developed for control of the accumulation of technogenic
impurities in environmental objects. A sample, after calcination at 550°C, is evaporated in an arc discharge. Spectra are
recorded by a DFS-8 spectrograph. Simultaneously, determination is made of Li, Ba, Sr, Cu, Zn, Cr, Ni, Co, Pb, Bi, Mo, V,
Ge, Ga, Y, Nb, Sn, Cd. For the majority of the elements the detection limits are lower than their percent abundance in the
crust and their maximum permissible concentrations.
Institute for Single Crystals, National Academy of Sciences of Ukraine, 60, Lenin Ave., Khar'kov, 310001, Ukraine. Translated
from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 3, pp. 396–399, May–June, 1997. 相似文献
109.
110.
M.T.N. Pham B.A. Boukamp G. Rijnders H.J.M. Bouwmeester D.H.A. Blank 《Applied Physics A: Materials Science & Processing》2004,79(4-6):907-910
PbZr0.53Ti0.47O3 (PZT) thin films containing nanoparticles of Pt (3–10 nm) were produced using pulsed laser deposition (PLD). The Pt content can be tuned by varying the energy density of the laser beam. Phase and microstructure analysis of the thin films was performed using XRD, SEM, TEM and AFM. The electrical properties were investigated by C–V and I–V measurements. The effective dielectric constant of the composite films increased substantially through the Pt dispersion. These films are promising candidates, for instance, for high-density dynamic random access memory (DRAM) devices. PACS 77.22.Ch; 77.84.Lf; 81.15.Fg 相似文献