ANТIGENS STRUCTURE OF ТНЕ PHYTOHEMAGGLUТININ OF PHASEOLUS VULGARIS

Phytohemagglutinins (РНА) are considered and utilized chiefly as antibodies in the field of experimental and аррlied medicine.Dujarrie de la Riuier and associates are the first to put in the problem as а matter of principle for the antigenic properties in the РНА and carry out experimental studies under this aspect.With renewed interest the question of the antigenic properties of РНА from Phaseolus vulgaris was raised after discovering its mitogenic abllity upon leukocytes of the human peripheric blооd in vitro. Pearmain and associates are the first to postulate the hypothesis that this phenomenon represents an immunological reaction of the leukocytes to the special РНА antigenic properties.We obtained РНА from the seeds of various types Phaseolus vulgaris, among which we chose the one with the most powerfully manifested mitogenetic properties. The РНА thus obtained represents purified globulin fractions, as already established bу the same authors in earlier investigations.Proving the antigenic structure of the РНА from Phaseolus vulgaris surges а particular scientific interest in the process of studying the essentials of its mitogenetic capacity. In our present work we give an account of the results btained from investigations on the antigenic structure of РНА of Phaseolus vulgaris. The experimentation was carried out in accordancewith the following plan: 1) determination of the antigenic structure of РНА from Phaseolus vulgaris, type Saxa and their identity with the antigens of РНА from the other sorts of this type; 2) determination of the antigens of РНА from Phaseolus vulgaris, sort Saxa and their related antigens in РНА obtained from the seeds of other sorts of the family Leguminosae - peas, soy-bean and hatchet.

Nonlinear Terms of MHD Equations for Homogeneous Magnetized Shear Flow

We have derived the full set of MHD equations for incompressible shear flow of a magnetized fluid and considered their solution in the wave-vector space. The linearized equations give the famous amplification of slow magnetosonic waves and describe the magnetorotational instability. The nonlinear terms in our analysis are responsible for the creation of turbulence and self-sustained spectral density of the MHD (Alfven and pseudo-Alfven) waves. Perspectives for numerical simulations of weak turbulence and calculation of the effective viscosity of accretion disks are shortly discussed in k-space.Comment: 13 pages, no figures; AIP Conference Proceedings 1356, Proceedings of the School and Workshop on Space Plasma Physics (1--12 September 2010, Kiten, Bulgaria), American Institute of Physics, Melville, NY, 201

Fast simulation of stabilizer circuits using a graph state representation

According to the Gottesman-Knill theorem, a class of quantum circuits, namely the so-called stabilizer circuits, can be simulated efficiently on a classical computer. We introduce a new algorithm for this task, which is based on the graph-state formalism. It shows significant improvement in comparison to an existing algorithm, given by Gottesman and Aaronson, in terms of speed and of the number of qubits the simulator can handle. We also present an implementation.Comment: v2: significantly improved presentation; accepted by PR

The theoretical capacity of the Parity Source Coder

The Parity Source Coder is a protocol for data compression which is based on a set of parity checks organized in a sparse random network. We consider here the case of memoryless unbiased binary sources. We show that the theoretical capacity saturate the Shannon limit at large K. We also find that the first corrections to the leading behavior are exponentially small, so that the behavior at finite K is very close to the optimal one.Comment: Added references, minor change

Entanglement Purification of Any Stabilizer State

We present a method for multipartite entanglement purification of any stabilizer state shared by several parties. In our protocol each party measures the stabilizer operators of a quantum error-correcting code on his or her qubits. The parties exchange their measurement results, detect or correct errors, and decode the desired purified state. We give sufficient conditions on the stabilizer codes that may be used in this procedure and find that Steane's seven-qubit code is the smallest error-correcting code sufficient to purify any stabilizer state. An error-detecting code that encodes two qubits in six can also be used to purify any stabilizer state. We further specify which classes of stabilizer codes can purify which classes of stabilizer states.Comment: 11 pages, 0 figures, comments welcome, submitting to Physical Review

Quantum states representing perfectly secure bits are always distillable

It is proven that recently introduced states with perfectly secure bits of cryptographic key (private states representing secure bit) [K. Horodecki et al., Phys. Rev. Lett. 94, 160502 (2005)] as well as its multipartite and higher dimension generalizations always represent distillable entanglement. The corresponding lower bounds on distillable entanglement are provided. We also present a simple alternative proof that for any bipartite quantum state entanglement cost is an upper bound on distillable cryptographic key in bipartite scenario.Comment: RevTeX, 5 pages, published versio

IMMUNOBIOLOGICAL AND ELECTROPHOREТIC INVESТIGAТJONS ON PHYTOHEMAGGLUТININS IN ТНЕ SEEDS OF SOME BULGARIAN PLANT SORTS

In the past two decades the scientific interiest in antibodies of plant origin was substantially increased. This is due to the discovering of а vast number of specific phytohemagglutinins as well as to other interesting biological properties of the same, namely their capacity of stimulating the mitotic activity of certain cells, of inhibiting the action of certain -enzymes, of arresting the development of some tumourous cells in vitro etc.Moreover, plant antibodies represent very suitble, samples for carrying out а thorough study on immunological, biochemical and biophysical properties of the immune bodies in general.In the present we report the results of our investigation on certain immunological and biochemical properties of phytohemagglutinins, extracted from the seeds of the sort Phaseolus vulgaris (beans sort 4784, 4579, 4540), Soja hispida (soya bean sort Adams, soya sort “granular"), Pisum sativum (peas sort Ramonski and peas Peremiden), Lathirus aphaca (hatchet Taldjer)