Generalized Faddeev equations in the AGS form for deuteron stripping with explicit inclusion of target excitations and Coulomb interaction

Theoretical description of reactions in general, and the theory for $(d,p)$ reactions, in particular, needs to advance into the new century. Here deuteron stripping processes off a target nucleus consisting of ${A}$ nucleons are treated within the framework of the few-body integral equations theory. The generalized Faddeev equations in the AGS form, which take into account the target excitations, with realistic optical potentials provide the most advanced and complete description of the deuteron stripping. The main problem in practical application of such equations is the screening of the Coulomb potential, which works only for light nuclei. In this paper we present a new formulation of the Faddeev equations in the AGS form taking into account the target excitations with explicit inclusion of the Coulomb interaction. By projecting the $(A+2)$-body operators onto target states, matrix three-body integral equations are derived which allow for the incorporation of the excited states of the target nucleons. Using the explicit equations for the partial Coulomb scattering wave functions in the momentum space we present the AGS equations in the Coulomb distorted wave representation without screening procedure. We also use the explicit expression for the off-shell two-body Coulomb scattering $T$-matrix which is needed to calculate the effective potentials in the AGS equations. The integrals containing the off-shell Coulomb T-matrix are regularized to make the obtained equations suitable for calculations. For $NN$ and nucleon-target nuclear interactions we assume the separable potentials what significantly simplifies solution of the AGS equations.Comment: 34 pages, 13 figure

Momentum Space Integral Equations for Three Charged Particles: Diagonal Kernels

It has been a long-standing question whether momentum space integral equations of the Faddeev type are applicable to reactions of three charged particles, in particular above the three-body threshold. For, the presence of long-range Coulomb forces has been thought to give rise to such severe singularities in their kernels that the latter may lack the compactness property known to exist in the case of purely short-range interactions. Employing the rigorously equivalent formulation in terms of an effective-two-body theory we have proved in a preceding paper [Phys. Rev. C {\bf 61}, 064006 (2000)] that, for all energies, the nondiagonal kernels occurring in the integral equations which determine the transition amplitudes for all binary collision processes, possess on and off the energy shell only integrable singularities, provided all three particles have charges of the same sign, i.e., all Coulomb interactions are repulsive. In the present paper we prove that, for particles with charges of equal sign, the diagonal kernels, in contrast, possess one, but only one, nonintegrable singularity. The latter can, however, be isolated explicitly and dealt with in a well-defined manner. Taken together these results imply that modified integral equations can be formulated, with kernels that become compact after a few iterations. This concludes the proof that standard solution methods can be used for the calculation of all binary (i.e., (in-)elastic and rearrangement) amplitudes by means of momentum space integral equations of the effective-two-body type.Comment: 36 pages, 2 figures, accepted for publication in Phys. Rev.

Electroproduction, photoproduction, and inverse electroproduction of pions in the first resonance region

Methods are set forth for determining the hadron electromagnetic structure in the sub-$N\bar{N}$-threshold timelike region of the virtual-photon ``mass'' and for investigating the nucleon weak structure in the spacelike region from experimental data on the process $\pi N\to e^+e^- N$ at low energies. These methods are formulated using the unified description of photoproduction, electroproduction, and inverse electroproduction of pions in the first resonance region in the framework of the dispersion-relation model and on the basis of the model-independent properties of inverse electroproduction. Applications of these methods are also shown.Comment: The revised published version; Revtex4, 18 pages, 6 figure

HEPATOPROTECTION IN THE INTENSIVE CARE OF PATIENTS WITH PURULENT-SEPTIC INFECTION

Objective: Prevention, early detection and timely correction of functional liver disorders in patients with purulent-septic infection. Materials and Methods: We studied 38 patients with severe purulent-septic infection associated with diabetic foot syndrome (20), acute peritonitis (18) of appendicular origin (8), acute destructive pancreatitis (7) and blunt abdominal trauma with a rupture of the small intestine (3). All the patients described had generalization of the infectious onset with development of sepsis (30 patients) and sepsis syndrome (8 patients). All the patients had generalization of infectious origin with the development of sepsis (30) and sepsis syndrome (8). Results: In the process of intensive therapy, the hemostatic parameters studied are already improved from the 3rd day, the most pronounced in patients of the 2nd group, who received the hepatoprotector jetepar. Conclusions: The obtained data confirm the hepatoprotective and detoxifying role of jetepar drug in severe purulent-septic infection. The drug can be used in the complex therapy of such critical conditions for the prevention and assistive therapy of developing hepatic complications

HEPATOPROTECTION IN THE INTENSIVE CARE OF PATIENTS WITH PURULENT-SEPTIC INFECTION

Aim: Prevention, early detection and timely correction of functional liver disorders in patients with purulent-septic infection. Material and methods: We studied 38 patients with severe purulent-septic infection associated with diabetic foot syndrome (20), acute peritonitis (18) of appendicular origin (8), acute destructive pancreatitis (7) and blunt abdominal trauma with a rupture of the small intestine (3). All the patients described had generalization of the infectious onset with development of sepsis (30 patients) and sepsis syndrome (8 patients). All the patients had generalization of infectious origin with the development of sepsis (30) and sepsis syndrome (8). Result: In the process of intensive therapy, the hemostatic parameters studied are already improved from the 3rd day, the most pronounced in patients of the 2nd group, who received the hepatoprotector jetepar. Conclusions: The obtained data confirm the hepatoprotective and detoxifying role of jetepar drug in severe purulent-septic infection. The drug can be used in the complex therapy of such critical conditions for the prevention and assistive therapy of developing hepatic complications

The New Document About the Bulavin Uprising (1708)

Introduction. A new source on the history of the Bulavin Uprising of 1707–1709 is published: a report of the Azov Governor I.A. Tolstoy to the Ambassadorial Chancery of December 8, 1708, which is stored in the Russian State Archive of Ancient Acts. It was sent in response to a request for an order about the Gulyashiy Chelovek (Freeman Wanderer) Grigory Zaitsev, nicknamed Banshick (Bath Attendant), accused of aiding Kondraty Bulavin. Analysis. Despite the brevity of the presentation, the document is very informative. It contains information about the events that took place in Cherkassk and Azov in June 1708. New details are reported about the organization of the rebel-led campaign against Azov, about Ataman K.A. Bulavin’s hopes for support from the Azov residents and soldiers, about the conspiracy against him in Cherkassk, etc. No less important is the data on how the preliminary investigation of state crimes (participation in a rebellion) was conducted at the Ambassadorial Chancery in the second half of 1708. On the example of the G.K. Zaitsev’s case we see that the investigation, which started because of a denunciation, was carried out in accordance with the norms of procedural law adopted at that time and was accompanied by the collection of evidence. At the same time, the paper is a source of biographical information about the person under investigation, who unwittingly became an agent of the Cherkassk’s conspirators and an informant of the Azov governor. Methods. The publication is prepared in accordance with the applicable rules of archaeography. Results. The published document allows us to verify some other sources introduced into scientific circulation earlier, and extends the knowledge available in science about the culmination of the Bulavin Uprising

Mius Campaign of Palatine A. P. Saltykov of 1698

The article reconstructs the history of the campaign of the Ryazan Razryad Regiment (Discharge Corps) in the North-Eastern Azov Sea area – the most poorly studied operation of the Russian-Turkish War of 1686–1699 based on the archival material. The specific dates of the campaign, the number and composition of the troops participating in it, their exact route is determined. The goals of the military expedition were to protect the region and build a port and a fortress on the northern coast of the Azov Sea. It is shown that the Mius Campaign of 1698 had an exclusively demonstration and colonization value