21 research outputs found
ENHANCING ENERGY EFFICIENCY OF MODERN MULTI-STOREY BUILDINGS
В статье рассматривается перспектива использования энергии ветра и восходящих потоков газов для энергообеспечения многоэтажных зданий.The article discusses the prospects of using wind energy and energy of upward flow for energy supply of multi-storey buildings
Calculation of nonlinear optical ellipsometric parameters uniaxial anisotropic crystal in the case where the optical axis lies in the plane of incidence
Reflection and transmission for second harmonic uniaxial anisotropic crystal in the case where the optical axis lies in the plane of incidence
Synthesis, Structure and Thermophysical Properties of Phosphates MNi0.5Zr1.5(PO4)3 (M = Mg, Ca, Sr)
New phosphates MNi0.5Zr1.5(PO4)3 (M = Mg, Ca, Sr) were prepared by the precipitating method. Phosphates were characterized using X-ray powder diffraction, IR-spectroscopy and electron microprobe analyses. The crystal structure of phosphates was refined by the Rietveld method. Phosphates CaNi0.5Zr1.5(PO4)3 and SrNi0.5Zr1.5(PO4)3 are shown to have been crystallized in the NaZr2(PO4)3-type structure and the phosphate MgNi0.5Zr1.5(PO4)3 was obtained as a single-phase with Sc2(WO4)3-type structure. Heat capacity of phosphate CaNi0.5Zr1.5(PO4)3 was measured in the range 7 – 650 K and increased monotonically over the entire temperature range studied. Thermal expansion of phosphate CaNi0.5Zr1.5(PO4)3 was studied in the interval 295-1073 K by the high temperature X-ray diffraction. This phosphate is similar to the best low-expansion ceramics, such as zircon, cordierite and silica glass in thermal expansion behavior