Growth kinetics and diffusion of microparticles in the coagulation of disperse phases

Analytic expressions obtained for describing the time change of individual dimensions of disperse-phase microparticles and allowing their solution time to be estimated are used to analyze the evolution of the cementite phase in the annealing of steel. Previously unknown new laws are presented for the growth kinetics and solution of particles in the process of nondiffusive coagulation.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 23–29, February, 1977.     

Fragmentation,autoionization, and charge-decrease reactions of doubly and triply charged anthracene ions in the first field-free region of the mass spectrometer

Theoretical and Experimental Chemistry -     

Sintering in Cu-Al powders

Various methods of examination have been applied to Cu-Al alloys (10 at. % Al) during sintering over a wide temperature range. The density change is found to result from balance between shrinkage and volume growth.     

Measurement of the analyzing power in p-->d-->(p p)n with a fast forward 1S0 proton pair

A measurement of the analyzing power A(y) of the p-->d--> (p p) + n reaction was carried out at the ANKE spectrometer at COSY at beam energies of 0.5 and 0.8 GeV by detection of a fast forward proton pair of small excitation energy E(pp) < 3 MeV. The S-wave dominance in the fast diproton is experimentally demonstrated in this reaction. While at T(p) = 0.8 GeV the measured analyzing power almost vanishes, it rises to nearly unity at T(p) = 0.5 GeV for neutrons emitted at theta(c.m.)(n) = 167 degrees. The results are compared with a model taking into account one-nucleon exchange, single scattering, and Delta(1232) excitation in the intermediate state. The model describes fairly well the unpolarized cross section obtained earlier and the analyzing power at 0.8 GeV; it fails to reproduce A(y) at 0.5 GeV.     

Effect of the humidity of honeycomb core on the strength of honeycomb structures bonded with VK-67 adhesive

Results of work on determining the effect of moisture content in a honeycomb core on the strength properties of honeycomb structures bonded with VK-67 adhesive are reported.     

On quasi-consistent integration by Nordsieck methods

In this paper we study advantages of numerical integration by quasi-consistent Nordsieck formulas. All quasi-consistent numerical methods possess at least one important property for practical use, which has not attracted attention yet, i.e. the global error of a quasi-consistent method has the same order as its local error. This means that the usual local error control will produce a numerical solution for the prescribed accuracy requirement if the principal term of the local error dominates strongly over remaining terms. In other words, the global error control can be as cheap as the local error control in the methods under discussion.