2018-2-1 · The paper proposes a method of passive leak detection for underwater pipelines by means of phased antenna arrays. It implies element-wise multiplication and addition of the output signals of individual array transducers. The proposed method provides a twofold increase in the resolution of the detection system in comparison with that obtained by ...
A new amorphous ribbon filler metal of Zr-5.5 Fe-2.5 Be-1.0 Nb-8.0 Cu-2.0 Sn-0.4 Cr (mass %) with the temperature of melting onset of 745-750 deg C is designed to braze spacer grids of zirconium base alloys. The brazing conditions (780-790 deg C, 40-45 s) are deter
Varieties of Lattices published by Springer Verlag, Lecture Notes in Mathematics 1533, (1992), x+162 pages. (link to the book on Amazon ) We also wrote an update in an appendix on Varieties of Lattices in the 2nd edition of General Lattice Theory by George Grätzer, Springer Verlag (1998). We thank Springer Verlag for publishing the book and ...
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[en] A reflectometer for study of the X-ray reflection characteristics of multilayer mirrors, diffraction grating and other optical elements in the spectral range of 0.6-20 nm is described. The reflectometer consists of an X-ray source, a grazing incidence spectrometer-monochromator, a toroidal mirror, primary beam intensity monitor and a five-axes goniometer.