Studying the Quark Antiquark Force with Inelastic Pion Electron Scattering

The concept of studying the internal structure of mesons is explored. Mesons, which are in principle two body quark antiquark interactions, may be much easier to understand than the nucleon. Measurements of the inelastic form factors to specific final states may permit careful direct studies of various components of the strong force. For example by looking at vector meson final states the spin flip amplitude can be isolated. Technical difficulties involved in a realistic experiment are examined. Experiments to some final states such as $\rho$, $K^*$ and $a_{0}$ are practical today.Comment: 9,UNDPDK-94-0

Pion and Kaon Vector Form Factors

We develop a unitarity approach to consider the final state interaction corrections to the tree level graphs calculated from Chiral Perturbation Theory ($\chi PT$) allowing the inclusion of explicit resonance fields. The method is discussed considering the coupled channel pion and kaon vector form factors. These form factors are then matched with the one loop $\chi PT$ results. A very good description of experimental data is accomplished for the vector form factors and for the $\pi\pi$ P-wave phase shifts up to $\sqrt{s}\lesssim 1.2$ GeV, beyond which multiparticle states play a non negligible role. In particular the low and resonance energy regions are discussed in detail and for the former a comparison with one and two loop $\chi PT$ is made showing a remarkable coincidence with the two loop $\chi PT$ results.Comment: 20 pages, 7 figs, to appear in Phys. Rev.

The investigation of YAlO3-NdAlO3 system, synthesis and characterization

The binary phase diagram of the YAlO3 (YAP) - NdAlO3 (NAP) system was determined by differential thermal analysis (DTA) and X-ray powder diffraction (XRD) measurements. High purity nanocrystalline powders and small single crystals of Y_{1-x}Nd_{x}AlO_3 (0 \leq x \leq 1) have been produced successfully by modified sol-gel (Pechini) and micro-pulling-down methods, respectively. Both end members show high mutual solubility >25% in the solid phase, with a miscibility gap for intermediate compositions. A solid solution with x \approx 0.2 melts azeotropic ca. 20 degrees below pure YAP. Such crystals can be grown from the melt without segregation. The narrow solid/liquid region near the azeotrope point could be measured with a "cycling" DTA measurement technique.Comment: 12 pages, 8 figures, submitted to J. Alloys. Comp

Optimization of production of the fermented milk beverage based on Tibetan kefir grains

In recent years we have seen interest in Tibetan kefir grains (TKG) for production of fermented milk beverages. The article presents the results of the work on expanding the range of fermented milk beverages based on TKG, studying the influence of fermentation conditions on quality characteristics of beverages and their shelf life. The possibility of their optimization is shown. Using the method of Central Composite Design (CCD), response functions were obtained in the form of 2nd-order polynomials, and the numerical values of the coefficient of these dependencies were calculated. The conditions of milk fermentation by Tibetan kefir grains were optimized. The numerical values of the influencing factors are: the dose of inoculate is (60 ±2) g per 100 ml of the milk, fermentation duration -(30±3) h; fermentation temperature - (35±4)°C. We also studied the effect of sea buckthorn, chokeberry and lingonberry juice additives on the quality of fermented milk drinks and their shelf life. Using the same method CCD we determined the functional dependencies of sensory indicators and shelf life of the beverage on the added amount of berry juice and sucrose. According to the results of the conducted studies, the recipe of a fermented milk beverage was modified. The optimal content of the components (per 100 ml of the drink) is: juice – (12±2) ml, sucrose - (10±1) g

THE APPLICATION OF PHYSIOTHERAPEUTIC TREATMENT METHODS IN THE EARLY STAGES OF AVASCULAR OSTEONECROSIS OF THE FEMORAL HEAD

The incidence of avascular osteonecrosis of the femoral head has increased dramatically since the COVID-19 pandemic. The use of physiotherapeutic (restorative) methods of treatment in the complex of conservative treatment of the disease improves the quality of life of patients, eliminates pain and limitation of movement in the hip joint, and delays the need for surgical intervention as much as possible