Apego y relación de pareja en jóvenes de 18 a 27 años

En la infancia se debe mantener un apego seguro entre cuidador-niño, de ahí se va formando la cer-canía física emocional, que garantiza un vínculo psicosocial efectivo. El objetivo es analizar la relación entre los factores del apego adulto y su influencia en las relaciones de pareja en adultos de Coahuila y Tamaulipas. Metodología: El diseño fue cuantitativo, no experimental, descriptivo, transversal, con una muestra de 61 personas, de la ciudad de Saltillo, Monclova, Piedras Negras, Acuña, Coahuila y Tampico, Tamaulipas. Se aplicó el Cuestionario de Apego Adulto. Resultados: Se encontró una correlación posi-tiva estadísticamente significativa entre Resolución Hostil de Conflictos y Baja Autoestima (rho= .639, p=.000), así como entre esta última y Autosuficiencia Emocional (rho= .576, p=.492). Se presentó una correlación positiva moderada estadísticamente significativa entre Expresión de Sentimientos y Baja Autoestima (rho=.325, p=.010). Asimismo, se encontró una correlación moderada significativa entre los ítems “Tengo confianza en mí mismo” y “Prefiero relaciones estables a esporádicas” (rho=.365, p=.004). Conclusiones: El estudio del apego en población adulta puede ser un indicador de la calidad y dinámica de las relaciones de pareja, basados en los sentimientos de seguridad y bienestar que guiarán sus elecciones a futuroIn childhood, a secure attachment between caregiver-child must be maintained, hence the physical-emo-tional closeness is formed, which guarantees an effective psychosocial bond. The objective is to analyze the relationship between adult attachment factors and their influence on couple relationships in adults from Coahuila and Tamaulipas. Methodology: The design was quantitative, non-experimental, descrip-tive, cross-sectional, with a sample of 61 people, from the city of Saltillo, Monclova, Piedras Negras, Acuña, Coahuila and Tampico, Tamaulipas. The Adult Attachment Questionnaire was applied. Results: A statistically significant positive correlation was found between Hostile Conflict Resolution and Low Self-esteem (rho = .639, p = .000), as well as between the latter and Emotional Self-sufficiency (rho = .576, p = .492). There was a statistically significant moderate positive correlation between Expression of Feelings and Low Self-esteem (rho = .325, p = .010). Likewise, a significant moderate correlation was found between the items “I have confidence in myself” and “I prefer stable relationships to sporadic” (rho = .365, p = .004). Conclusions: The study of attachment in the adult population can be an indicator of the quality and dynamics of couple relationships, based on the feelings of security and well-being that will guide their future choice

Stress-induced waveguides in Nd:YAG by simultaneous double-beam irradiation with femtosecond pulses

We report on the fabrication of stress-induced waveguides in Nd:YAG (neodymium doped yttrium aluminum garnet, Nd:Y3Al5O12) by simultaneous double-beam irradiation with femtosecond laser pulses. An interferometer was used to generate two femtosecond laser beams that, focused with certain lateral separation inside the crystal, produced two parallel damage tracks with a single scan. The propagation of the mechanical waves simultaneously created in both focal spots produced a highly symmetrical stress field that is clearly revealed in micro-luminescence maps. The optical properties of the double-beam waveguides are studied and compared to those of single-beam irradiation, showing relevant differences. The creation of more symmetric stress patterns and a slight reduction of propagation losses are explained in terms of the fact that simultaneous inscription allows for a drastic reduction in the magnitude of “incubation” effects related to the existence of pre-damaged states.This work was supported by the Ministerio de Economía y Competitividad under Projects FIS2013-44174-P and MAT2013-47395- C4-1-R. The femtosecond laser inscription was carried out in the Spanish Pulsed Laser Center (CLPU) with their Laser Service (High-Repetition-Rate laser system) and their technical assistance, in the framework of the access agreement concerning USAL staff

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2

The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, individuals with clonal mosaic events (clonal mosaicism for chromosome alterations and/or loss of chromosome Y) showed an increased risk of COVID-19 lethality