140 years to faculty of normal anatomy Rostov State Medical University

Scientific researches of employees of faculty for 140 years are various and numerous, they are devoted to questions ethnic and integrative anthropology, studying of variants and anomalies in various systems of bodies of the person, to studying of cardiovascular and nervous systems in age aspect and at a pathology, to questions of anatomic and anthropological technics, comparative and veterinary anatomy. For the 140-years period of work of the Rostov faculty of normal anatomy by its employees it has been published more than 2000 scientific works, 23 monographies, they took part in a writing of 16 textbooks, atlases, dictionaries and 83 manuals and methodical recommendations for students. Under direction of its managers for this period employees had been executed 27 doctor’s and 76 master’s theses. Employees of faculty actively participated in work of forums anatomists and clinical physicians. Authoritative enough Rostov school of anatomists which representatives supervised over anatomic faculties in 14 cities of Russia and abroad was generated. On faculty numerous pupils who expanded have been brought up and multiplied achievements of the Rostov anatomic school

Construction of Non-Perturbative, Unitary Particle-Antiparticle Amplitudes for Finite Particle Number Scattering Formalisms

Starting from a unitary, Lorentz invariant two-particle scattering amplitude , we show how to use an identification and replacement process to construct a unique, unitary particle-antiparticle amplitude. This process differs from conventional on-shell Mandelstam s,t,u crossing in that the input and constructed amplitudes can be off-diagonal and off-energy shell. Further, amplitudes are constructed using the invariant parameters which are appropriate to use as driving terms in the multi-particle, multichannel non-perturbative, cluster decomposable, relativistic scattering equations of the Faddeev-type integral equations recently presented by Alfred, Kwizera, Lindesay and Noyes. It is therefore anticipated that when so employed, the resulting multi-channel solutions will also be unitary. The process preserves the usual particle-antiparticle symmetries. To illustrate this process, we construct a J=0 scattering length model chosen for simplicity. We also exhibit a class of physical models which contain a finite quantum mass parameter and are Lorentz invariant. These are constructed to reduce in the appropriate limits, and with the proper choice of value and sign of the interaction parameter, to the asymptotic solution of the non-relativistic Coulomb problem, including the forward scattering singularity, the essential singularity in the phase, and the Bohr bound-state spectrum

90 Years to the Society of Anatomists, Histologists and Embryologists

Scientific research of the members of society in 90 years are diverse and they are numerous, they dedicated to questions of ethnic and integrative anthropology, to study of versions and anomalies in different systems of the organs of man, to study of cardiovascular and nervous systems in the aspect dependent on age and with the pathology, to development and the regeneration of the cardiovascular system, to questions of anatomical and anthropological equipment, comparative and veterinary anatomy. The members of society actively participated in the work of the forums of morphologists and clinicians. Was formed the sufficiently authoritative Rostov school of morphologists, whose representatives led departments in Russia cities and abroad

Termination Reaction in the Anionic Polymerization of Methacrylonitrile

The anionic polymerization of methacrylonitrile initiated by triethylphosphine in dimethylformamide was studied. Experimental evidence for two mechanisms of termination reaction was obtained. By addition of water or alcohol in polymerizing system the rate of polymerization and molecular weight of polymethacrylon1itrile decrease, which proves the termination reaction to be bimolecular and proceed by interaction of the active carbanion with water or alcohol. The rate constant for termination of free anions with water was determined, k~,0 = 2.2 x 102 dm3 moP s-1• The termination reaction could not be excluded by purification and prolonged drying of all components of the system, which indicates that the second mechanism of termination is operative as well. Conductivity measurements gave evidence for a monomolecular spontaneous reaction leading to deactivation of the anion

THE ANTHOLOGY OF STRESS FRACTURES

The article is devoted, to the history of studying of a problem, of stress fractures. The article raised, questions of terminology and statistics of stress fracture at different times by different authors and. the stage-by-stage scientific accumulation of information on this topic is shown

What have we already learned from the CMB?

The COBE satellite, and the DMR experiment in particular, was extraordinarily successful. However, the DMR results were announced about 7 years ago, during which time a great deal more has been learned about anisotropies in the Cosmic Microwave Background (CMB). The CMB experiments currently being designed and built, including long-duration balloons, interferometers, and two space missions, promise to address several fundamental cosmological issues. We present our evaluation of what we already know, what we are beginning to learn now, and what the future may bring.Comment: 20 pages, 3 figures. Changes to match version accepted by PAS

Evolution of vacancy-related defects upon annealing of ion-implanted germanium

Positron annihilation spectroscopy was used to study defects created during the ion implantation and annealing of Ge. Ge and Si ions with energies from 600 keV to 2 MeV were implanted at fluences between 1×10 exp 12 cm exp−2 and 4×10 exp 14 cm exp−2. Ion channeling measurements on as-implanted samples show considerable lattice damage at a fluence of 1×10 exp 13 cm exp −2 and a fluence of 1×10 exp 14 cm exp -2 was enough to amorphize the samples. Positron experiments reveal that the average free volume in as-irradiated samples is of divacancy size. Larger vacancy clusters are formed during regrowth of the damaged layers when the samples are annealed in the temperature range 200–400 °C. Evolution of the vacancy-related defects upon annealing depends noticeably on fluence of ion implantation and for the highest fluences also on ion species.Peer reviewe