La complejidad del conflicto ucraniano: análisis histórico y político.

La llamada guerra entre Rusia y Ucrania ha generado un impacto significativo en los intereses de los países europeos occidentales, Estados Unidos y otros involucrados. Este conflicto no es simplemente una disputa entre dos naciones, sino que representa los deseos de un mundo imperialista que busca eliminar la influencia de Rusia en la geopolítica mundial y mantener el liderazgo de Estados Unidos y la Organización del Atlántico Norte, utilizando como escudo a Ucrania y los países europeos. La decisión de Ucrania como campo de batalla es una estrategia clara de Occidente, que ha suministrado armamento y contratistas militares para apoyar a las fuerzas armadas ucranianas. Por otro lado, Rusia busca eliminar el desarrollo del neofascismo en Ucrania y defender los intereses de sus conciudadanos en los territorios de esta república. Comprender las raíces históricas, las causas y la magnitud del conflicto es fundamental para entender su impacto político, económico, financiero, social y diplomático en el mundo actual

La complejidad del conflicto ucraniano: análisis histórico y político.

The so-called war between Russia and Ukraine has had a significant impact on the interests of Western European countries, the United States and others involved. This conflict is not simply a dispute between two nations, but represents the interests of an imperialist world that seeks to eliminate Russia's influence in world geopolitics and maintain the leadership of the United States and the North Atlantic Organization, using Ukraine and European countries as a shield. The use of Ukraine as a battlefield is a clear strategy of the West, which has supplied armaments and military contractors to support the Ukrainian armed forces.On the other hand, Russia seeks to eliminate the development of neo-fascism in Ukraine and to defend the interests of its fellow citizens in the territories of this republic. Understanding the historical roots, causes and magnitude of the conflict is fundamental to understanding its political, economic, financial, social and diplomatic impact in today's world.La llamada guerra entre Rusia y Ucrania ha generado un impacto significativo en los intereses de los países europeos occidentales, Estados Unidos y otros involucrados. Este conflicto no es simplemente una disputa entre dos naciones, sino que representa los deseos de un mundo imperialista que busca eliminar la influencia de Rusia en la geopolítica mundial y mantener el liderazgo de Estados Unidos y la Organización del Atlántico Norte, utilizando como escudo a Ucrania y los países europeos. La decisión de Ucrania como campo de batalla es una estrategia clara de Occidente, que ha suministrado armamento y contratistas militares para apoyar a las fuerzas armadas ucranianas. Por otro lado, Rusia busca eliminar el desarrollo del neofascismo en Ucrania y defender los intereses de sus conciudadanos en los territorios de esta república. Comprender las raíces históricas, las causas y la magnitud del conflicto es fundamental para entender su impacto político, económico, financiero, social y diplomático en el mundo actual

Fermented Milks from Small Ruminant: Effect on Metabolism and Immune Status of Mice Fed Mild Caloric Restricted Diet

The purpose of this study was to evaluate the effect of the administration of Fermented Goat´S Milks (FGMs) in mice fed mild caloric restricted diet. The ability of these FGMs to ameliorate immune and metabolic parameters related to mild caloric restriction was studied. We also analyzed if the time (45 or 90 days) of caloric restriction have influence on leptin secretion, IgA+ cells number and phagocytic activity of peritoneal macrophages, and also test the correlation between these parameters. Mice were fed with a mild caloric restricted diet during 45 or 90 days. After these periods of caloric restriction, mice were refed with balanced conventional diet (BCD) plus goat´s milks or BCD plus goat´s milks fermented with Lactobacillus rhamnosus CRL1425 (FGM-Lr) or Lactobacillus casei CRL431 (FGM-Lc). All renutrition diets induced an increase of serum glucose, triglycerides, total proteins and leucocytes cells. A decrease in cholesterol levels was observed after the diets. FGM-Lr induced lower triglycerides values than others diets. All FGMs restore IgA+ cells in intestinal mucosa, and the FGM-Lc group had higher positive cells number than the ad libitum control. Furthermore, phagocytic activity of peritoneal macrophages only increased in mice fed with FGM-Lc. Mild caloric restriction induced a decrease on leptin circulating values at 90 days. The renutrition with FGM-Lr lead to lower leptin levels than mild caloric restriction controls, while FGM-Lc induced higher leptin levels. Positive correlation between serum leptin concentration and immune parameters was observed in all groups under study. We showed that leptin levels could positively predict the immune mucosal competence in mild caloric restricted mice. These results suggest that the FGMs are able to modulate, in different way, serum leptin levels, IgA+ cells number and phagocytic activity. Furthermore, FGM-Lc could be more effective for nutritional treatment in malnutrition status.Fil: Fabersani Marrades, Mario Emanuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tucumán. Centro de Referencia para Lactobacilos (i); ArgentinaFil: Torres, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tucumán. Instituto de Quimica del Noroeste; Argentina. Universidad Nacional de Tucumán; ArgentinaFil: Valdez, C.. Universidad Nacional de Tucumán; ArgentinaFil: Gonzalez, Silvia Nelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tucumán. Centro de Referencia para Lactobacilos (i); Argentina. Universidad Nacional de Tucumán; ArgentinaFil: Gauffin Cano, María Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tucumán. Centro de Referencia para Lactobacilos (i); Argentina. Universidad del Norte Santo Tomás de Aquino; Argentin

Upper Limits on a Stochastic Background of Gravitational Waves

The Laser Interferometer Gravitational-Wave Observatory has performed a third science run with much improved sensitivities of all three interferometers. We present an analysis of approximately 200 hours of data acquired during this run, used to search for a stochastic background of gravitational radiation. We place upper bounds on the energy density stored as gravitational radiation for three different spectral power laws. For the flat spectrum, our limit of Ω

Upper limits on gravitational wave emission from 78 radio pulsars

We present upper limits on the gravitational wave emission from 78 radio pulsars based on data from the third and fourth science runs of the LIGO and GEO 600 gravitational wave detectors. The data from both runs have been combined coherently to maximize sensitivity. For the first time, pulsars within binary (or multiple) systems have been included in the search by taking into account the signal modulation due to their orbits. Our upper limits are therefore the first measured for 56 of these pulsars. For the remaining 22, our results improve on previous upper limits by up to a factor of 10. For example, our tightest upper limit on the gravitational strain is 2.6×10−25 for PSR J1603−7202, and the equatorial ellipticity of PSR J2124–3358 is less than 10−6. Furthermore, our strain upper limit for the Crab pulsar is only 2.2 times greater than the fiducial spin-down limit

Search of S3 LIGO data for gravitational wave signals from spinning black hole and neutron star binary inspirals

We report on the methods and results of the first dedicated search for gravitational waves emitted during the inspiral of compact binaries with spinning component bodies. We analyze 788 hours of data collected during the third science run (S3) of the LIGO detectors. We searched for binary systems using a detection template family specially designed to capture the effects of the spin-induced precession of the orbital plane. We present details of the techniques developed to enable this search for spin-modulated gravitational waves, highlighting the differences between this and other recent searches for binaries with nonspinning components. The template bank we employed was found to yield high matches with our spin-modulated target waveform for binaries with masses in the asymmetric range 1.0M

Upper limit map of a background of gravitational waves

We searched for an anisotropic background of gravitational waves using data from the LIGO S4 science run and a method that is optimized for point sources. This is appropriate if, for example, the gravitational wave background is dominated by a small number of distinct astrophysical sources. No signal was seen. Upper limit maps were produced assuming two different power laws for the source strain power spectrum. For an f−3 power law and using the 50 Hz to 1.8 kHz band the upper limits on the source strain power spectrum vary between 1.2×10−48  Hz−1 (100  Hz/f)3 and 1.2×10−47  Hz−1 (100  Hz/f)3, depending on the position in the sky. Similarly, in the case of constant strain power spectrum, the upper limits vary between 8.5×10−49  Hz−1 and 6.1×10−48  Hz−1. As a side product a limit on an isotropic background of gravitational waves was also obtained. All limits are at the 90% confidence level. Finally, as an application, we focused on the direction of Sco-X1, the brightest low-mass x-ray binary. We compare the upper limit on strain amplitude obtained by this method to expectations based on the x-ray flux from Sco-X1

INFLUENCE OF BIOLOGICAL SEX ON SOCIAL BEHAVIOR, INDIVIDUAL RECOGNTION, AND NON-ASSOCIATIVE LEARNING IN THE ADULT GRAY SHORT-TAILED OPOSSUM (MONODELPHIS DOMESTICA)

Social behavior is critical for relationship formation and is influenced by myriad environmental and individual factors. Basic and preclinical research typically relies on rodent models to identify the mechanisms that underlie behavior; however, it is important to use non-rodent models as well. A major objective of the present study was to test the hypothesis that biological sex and social experience modulate the expression of social behavior in the adult gray short-tailed opossum (Monodelphis domestica), a non-traditional model. We also investigated the non-associative learning abilities of these animals. Following a period of social isolation, animals of both sexes were paired with a non-familiar, same-sex partner for 10 minutes on three different occasions, with 24-hour inter-trial intervals. We are the first research group to find significant sex differences in submissive and nonsocial behaviors in Monodelphis. Females displayed significantly higher durations of nonsocial behavior that increased over trials. Males were more aggressive; their latencies to the first attack and submissive behavior decreased over trials whereas these latencies increased for females; males’ duration of submissive behavior increased over trials whereas it decreased for females. A different group of subjects habituated in response to repeated presentations to neutral odors and dishabituated in response to novel odors. In addition, both males and females demonstrated the ability to form social memories in a standard individual (social) recognition test. Our results contribute to the characterization of this marsupial species, an important first step in developing it as a model of complex social behaviors

First Upper Limits from LIGO on Gravitational Wave Bursts

We report on a search for gravitational wave bursts using data from the first science run of the Laser Interferometer Gravitational Wave Observatory (LIGO) detectors. Our search focuses on bursts with durations ranging from 4 to 100 ms, and with significant power in the LIGO sensitivity band of 150 to 3000 Hz. We bound the rate for such detected bursts at less than 1.6 events per day at a 90% confidence level. This result is interpreted in terms of the detection efficiency for ad hoc waveforms (Gaussians and sine Gaussians) as a function of their root-sum-square strain hrss; typical sensitivities lie in the range hrss∼10−19–10−17strain/√Hz, depending on the waveform. We discuss improvements in the search method that will be applied to future science data from LIGO and other gravitational wave detectors