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181.
1·Eu·BPS was developed as a luminescent lanthanide sensor for use in displacement assays for detection of d-metal ions by monitoring the changes in the europium emission, which was quenched for iron(II), with a detection limit of ~10 pM (0.002 μg L(-1)) for Fe(II) in buffered pH 7.4 solution. 相似文献
182.
A. L. Dmitriev E. I. Kotova E. M. Nikushchenko A. L. Smirnova V. T. Prokopenko 《Optics and Spectroscopy》2014,117(5):799-800
The principle of operation of a ballistic laser gravimeter based on a dropping holographic diffraction grating is described. The free-fall acceleration of the grating is determined from a change in the frequency of beats that arise during the interference of light beams diffracted on the hologram in the zeroth and first orders of diffraction. An experiment demonstrating this principle of measurement is described. The main distinctive features of the proposed gravimeter are simple design, compact size, and the possibility of using this device for analysis of high-frequency fluctuations in the gravitational-field strength. 相似文献
183.
I. Yu. Kotova 《Russian Journal of Inorganic Chemistry》2014,59(8):844-848
The subsolidus region of the Ag2MoO4-CoMoO4-Al2(MoO4)3 ternary salt system was studied by X-ray powder diffraction analysis. New compounds Ag1?x Co1?x Al1 + x (MoO4)3 (0 ≤ x ≤ 0.4) and AgCo3Al(MoO4)5 were detected to form. The variable-composition phase Ag1?x Co1?x Al1 + x (MoO4)3 is of the NASICON structure type (space group \(R\bar 3c\) ). AgCo3Al(MoO4)5 crystallizes in the triclinic symmetry (space group \(P\bar 1\) Z = 2) with the unit cell parameters a = 6.9101(6), b = 17.519(1), c = 6.8241(6) Å, α = 87.356(7)°, β = 101.078(7)°, and γ = 91.985(9)°. The compounds are thermally stable until 770–780 and 760°C, respectively. 相似文献
184.
G. V. Girichev N. V. Tverdova N. I. Giricheva E. D. Pelevina N. P. Kuz’mina O. V. Kotova 《Journal of Structural Chemistry》2010,51(1):23-31
Gas electron diffraction is used to study the structure of a zinc(II) N,N’-ethylene-bis(acetylacetoniminate) molecule, ZnO2N2C12H18, at a temperature T = 503(5) K. It is found that the molecule has the symmetry of the C2 equilibrium configuration with a nonplanar structure of the ZnN2O2 coordination fragment and internuclear distances rh1(Zn-O) of 1.958(13) ? and h1(Zn-N) of 2.012(16) ?. Quantum chemical calculations by the DFT/B3LYP/CEP,TZV method gives the molecular structure consistent
with that found in the experiment. 相似文献