Observation of electric quadrupole spin resonance of Ho<Superscript>3+</Superscript> impurity ions in synthetic forsterite

The anomalous dependence of the electron paramagnetic resonance (EPR) line shape on the microwave power in the resonator has been found when studying the continuous-wave EPR spectra of impurity holmium ions in synthetic forsterite on an ELEXSYS E 580 EPR spectrometer. The power-threshold transition from the conventional lines being the derivatives of the spectral line contours to the spectral line contours themselves has been observed as the power increased. The properties of the anomalous EPR lines are qualitatively explained assuming that the resonance electric quadrupole transitions take place between the electron spin levels.     

Effect of treatment in supercritical CO<Subscript>2</Subscript> on the composition and structure of tealeaf and cellulose

The influence of the pretreatment procedures with supercritical CO₂ (SC-CO₂) on the elemental composition of tealeaf is studied. Fourier-transform infrared absorption spectroscopy is used to examine the effect of SC-CO₂ on the structure of Chinese green tea and cellulose.     

Evolution of the Entropy and Renyi Difference Information during Self-Organization of Open Additive Systems

Evolution of the entropy and Renyi difference information is considered during transitions between stationary states in the space of control parameters for additive self-organization systems. S- and I-theorems on changes in the Renyi additive measures are proved under the Gibbs condition for the effective Hamiltonian. In the group approach, one- and two-parameter entropies and difference information of six types are obtained depending on the distribution seminorm.__________Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 42–47, March, 2005.     

Calculation of aerosol particle trajectories in the velocity hodograph plane

A method is proposed for calculating the trajectories of aerosol particles. The method is based on transforming the equations of particle motion to the variables of the hodograph plane of the carrier phase velocity. This greatly samplifies the integration of the equations. As an example, the problem of an aerosol jet injected from a slit nozzle and spreading over a plane is solved.Kzzan'. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 3, pp. 129-134, May-June, 1994.     

Asymptotic conformal invariance and asymptotic finiteness in grand unification theories in curved spacetime

Lenin Komsomol State Pedagogical Institute, Tomsk. Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 83, No. 3, pp. 399–405, June, 1990.