New Superembeddings for Type II Superstrings

Possible ways of generalization of the superembedding approach for the supersurfaces with the number of Grassmann directions being less than the half of that for the target superspace are considered on example of Type II superstrings. Focus is on n=(1,1) superworldsheet embedded into D=10 Type II superspace that is of the interest for establishing a relation with the NSR string.Comment: 26 pages, LaTeX, JHEP.cls and JHEP.bst style files are used; v2: misprints corrected, comments, acknowledgments, references adde

Relativistic particle dynamics in D=2+1

We propose a SUSY variant of the action for a massless spinning particles via the inclusion of twistor variables. The action is constructed to be invariant under SUSY transformations and $\tau$-reparametrizations even when an interaction field is including. The constraint analysis is achieved and the equations of motion are derived. The commutation relations obtained for the commuting spinor variables $\lambda$ show that the particle states have fractional statistics and spin. At once we introduce a possible massive term for the non-interacting model.Comment: 11 page

A note on N=4 supersymmetric mechanics on K\"ahler manifolds

The geometric models of N=4 supersymmetric mechanics with (2d.2d)_{\DC}-dimensional phase space are proposed, which can be viewed as one-dimensional counterparts of two-dimensional N=2 supersymmetric sigma-models by Alvarez-Gaum\'e and Freedman. The related construction of supersymmetric mechanics whose phase space is a K\"ahler supermanifold is considered. Also, its relation with antisymplectic geometry is discussed.Comment: 4 pages, revte

Hamiltonian structure and noncommutativity in pp-brane models with exotic supersymmetry

The Hamiltonian of the simplest super $p$-brane model preserving 3/4 of the D=4 N=1 supersymmetry in the centrally extended symplectic superspace is derived and its symmetries are described. The constraints of the model are covariantly separated into the first- and the second-class sets and the Dirac brackets (D.B.) are constructed. We show the D.B. noncommutativity of the super $p$-brane coordinates and find the D.B. realization of the $OSp(1|8)$ superalgebra. Established is the coincidence of the D.B. and Poisson bracket realizations of the $OSp(1|8)$ superalgebra on the constraint surface and the absence there of anomaly terms in the commutation relations for the quantized generators of the superalgebra.Comment: Latex, 27 pages, no figures. Latex packages amsfonts and euscript are use

Volkov-Akulov theory and D-branes

The action of supersymmetric Born-Infeld theory (D-9-brane in a Lorentz covariant static gauge) has a geometric form of the Volkov-Akulov-type. The first non-linearly realized supersymmetry can be made manifest, the second world-volume supersymmetry is not manifest. We also study the analogous 2 supersymmetries of the quadratic action of the covariantly quantized D-0-brane. We show that the Hamiltonian and the BRST operator are build from these two supersymmetry generators.Comment: 10 pages, Latex, Contribution to Supersymmetry and Quantum Field Theory, International Seminar dedicated to the memory of D. V. Volkov (Kharkov, 1997

Иммунные и генетические факторы нарушениярепродуктивной функции, ассоциированныес урогенитальной хламидийной инфекцией у человека

This review covers current concepts of immune and genetic mechanisms of infertility associated with human urogenital chlamydial infection. It describes studies of individual polymorphisms of genes coding cytokines and other immune system mediators. It also presents the results of studies aimed at searching for genetic predisposition to the development of complications resulting in human reproductive function disorders caused by past urogenital chlamydial infections.В обзоре освещены современные представления об иммунных и генетических аспектах бесплодия, ассоциированного с урогенитальной хламидийной инфекцией у человека. Рассматриваются работы по изучению индивидуальных полиморфизмов генов, кодирующих цитокины и другие медиаторы иммунной системы. Представлены результаты исследований, направленных на поиск генетической предрасположенности к развитию осложнений, приводящих к нарушению репродуктивной функции человека, вследствие перенесенной урогенитальной хламидийной инфекции

Современные методы идентификации возбудителя гонококковойинфекции

The authors present the data on the current laboratory methods and recommendations for identifying the gonorrhea pathogen applied in Russia and abroad: microscopy method, cultural (bacteriological) study method, nucleic acid amplification techniques and DNA chip technology. The benefits and shortcomings of each of the techniques have been compared. The authors emphasize the cultural method is currently considered to be the key one for diagnosing gonorrhea due to its high specificity and sensitivity making it possible to define the N.gonorrhoeae sensitivity to antimicrobial drugs, which is very important taking into consideration the N. gonorrhoeae resistance to antibiotics. The nucleic acid amplification techniques and, first of all, polymerase chain reaction, can be used in Russia as screening methods. The results obtained by using the techniques need confirmation by the cultural method.Приведены данные о современных лабораторных методах и рекомендациях по идентификации возбудителя гонореи, применяемых в России и за рубежом: методе микроскопии, культуральном (бактериологическом) методе исследования, методах амплификации нуклеиновых кислот, технологии ДНК-чипов; в сравнительном аспекте отражены достоинства и недостатки каждого метода. Подчеркнуто, что основой диагностики гонореи в настоящее время является культуральный метод, обладающий высокой специфичностью и чувствительностью, позволяющий определять чувствительность N. gonorrhoeae к антимикробным препаратам, что особенно актуально ввиду возрастания в последние годы резистентности N. gonorrhoeae к антибиотикам. Методы амплификации нуклеиновых кислот и прежде всего полимеразная цепная реакция в России могут применяться в качестве скрининговых методов; результаты, полученные при использовании этих методов, требуют подтверждения культуральным методом