Observational evidence for a connection between SMBHs and dark matter haloes

We investigate the relation between circular velocity vc and bulge velocity dispersion sigma in spiral galaxies, based on literature data and new spectroscopic observations. We find a strong, nearly linear vc-sigma correlation with a negligible intrinsic scatter, and a striking agreement with the corresponding relation for elliptical galaxies. The least massive galaxies (sigma < 80 km/s) significantly deviate from this relation. We combine this vc-sigma correlation with the well-known MBH-sigma relation to obtain a tight correlation between circular velocity and supermassive black hole mass, and interpret this as observational evidence for a close link between supermassive black holes and the dark matter haloes in which they presumably formed. Apart from being an important ingredient for theoretical models of galaxy formation and evolution, the relation between MBH and circular velocity has the potential to become an important practical tool in estimating supermassive black hole masses in spiral galaxies.Comment: 4 pages, 1 figure, to appear in "The Interplay among Black Holes, Stars and ISM in Galactic Nuclei", IAU Symposium 222, eds. Th. Storchi Bergmann, L.C. Ho & H.R. Schmit

HALOGAS: HI Observations and Modeling of the Nearby Edge-on Spiral Galaxy NGC 4565

We present 21-cm observations and models of the neutral hydrogen in NGC 4565, a nearby, edge-on spiral galaxy, as part of the Westerbork Hydrogen Accretion in LOcal GAlaxieS (HALOGAS) survey. These models provide insight concerning both the morphology and kinematics of HI above, as well as within, the disk. NGC 4565 exhibits a distinctly warped and asymmetric disk with a flaring layer. Our modeling provides no evidence for a massive, extended HI halo. We see evidence for a bar and associated radial motions. Additionally, there are indications of radial motions within the disk, possibly associated with a ring of higher density. We see a substantial decrease in rotational velocity with height above the plane of the disk (a lag) of -40 +5/-20 km/s/kpc and -30 +5/-30 km s/kpc in the approaching and receding halves, respectively. This lag is only seen within the inner ~4.75' (14.9 kpc) on the approaching half and ~4.25' (13.4 kpc) on the receding, making this a radially shallowing lag, which is now seen in the HI layers of several galaxies. When comparing results for NGC 4565 and those for other galaxies, there are tentative indications of high star formation rate per unit area being associated with the presence of a halo. Finally, HI is found in two companion galaxies, one of which is clearly interacting with NGC 4565.Comment: 17 pages, 16 figures, accepted for publication in the Astrophysical Journal, modified affiliatio

Examining the Associations Between Experiences of Perceived Racism and Drug and Alcohol Use in Aboriginal Australians

ObjectiveThis study aimed to explore the relationships between experiences of perceived racism, mental health and drug and alcohol use among Aboriginal Australians. MethodSixty-two Aboriginal Australians, ranging in age from 19-64 years (Mage = 33.71, SD = 12.47) and residing in Victoria completed an online questionnaire containing measures of perceived racism, alcohol use, substance use and mental health. ResultsFirst, 66% of the sample reported experiencing interpersonal racism, with the highest proportion of reported experiences occurring in health settings, educational/academic settings and by staff of government agencies. Second, perceived racism was significantly associated with poorer mental health and well-being. Finally, while perceived racism was not significantly associated with substance use, there was an indirect pathway from perceived racism to substance use through mental health concerns. ConclusionsThe current research indicates that racism is still frequently experienced by Aboriginal Australians and is directly associated with poorer mental health, and indirectly with substance use through poorer mental health. The findings demonstrate a clear need for further research in this area

Investigation of Genes That May Be Required for the Predictive Ability of the Phsp-16.2::GFP Reporter

In Caenorhabditis elegans expression of the fluorescent reporter (Phsp-16.2::GFP) is driven by transcription of a stress-responsive promoter sequence and has been shown to predict subsequent stress resistance (thermotolerance) and lifespan of individual animals within an isogenic population (Rea et al., 2005). The mechanism behind the predictive nature of this reporter is poorly understood. To better understand how this reporter works, stress-responsive genes were examined to determine if they were required for the ability of the reporter to predict thermotolerance or lifespan. Animals that had low or high expression of the Phsp-16.2::GFP reporter and contained loss-of-function mutations in select stress-responsive genes were tested to determine whether the animals with higher expression of the reporter still had improved thermotolerance or lifespan. The results revealed that none of the tested stress-responsive genes were necessary for the predictive power of the reporter. In some mutants, the reporter maintained its predictive ability even though the overall thermotolerance was greatly reduced. This implies that the predictive ability of the reporter is not linked to the stress resistance (thermotolerance) of the animal, as originally expected

Análisis nutricional: el consumo de calorías de la población pobre en Argentina

Existe una creencia generalizada entre los economistas que la inseguridad alimentaria y el hambre son el resultado de la pobreza. Muchos sostienen que el crecimiento económico y los aumentos en los niveles de ingreso de los hogares pobres mejorarán la habilidad y el deseo de los mismos por adquirir una dieta adecuada, al menos en términos de la energía aportada por los alimentos (calorías). Teniendo en cuenta la dispar distribución de los gastos en alimentos debido a la creciente desigualdad en los niveles de vida de nuestro país, el objetivo del presente trabajo es analizar las deficiencias de nuestra población en la satisfacción de los requerimientos mínimos nutricionales, evaluar el aporte calórico de los distintos grupos de alimentos y cuantificar el grado de sensibilidad de las calorías a las variaciones en el ingreso. Además se realiza un análisis exploratorio para identificar las características de los hogares con deficiencias calóricas. La generación de información para nuestro país sobre estos aspectos es el paso previo para evaluar la eficacia de programas dirigidos a disminuir los niveles de pobreza y desnutrición otorgando subsidios directos en dinero o raciones de alimentos. Además de orientar las decisiones para la producción de alimentos estratégicos en la mejora de los niveles nutricionales de los hogares más carenciados o vulnerables.Fil: Rodríguez, Elsa Mirta M. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina.Fil: Garrido, Laura. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina.Fil: Gentile, Natacha. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina.Fil: Lupín, Beatriz. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina

Gonadal Development in European Eel Populations of North Adriatic Lagoons at Different Silvering Stages

The European eel (Anguilla anguilla, Linnaeus 1758) is a catadromous fish with significant cultural, scientific, and commercial value. The protection of this species is particularly difficult because the biology of the eel life cycle remains unknown in many aspects. The European eel (A. anguilla) population has declined alarmingly over the past 30 years; this condition has led to questions about the long-term welfare of this species. This work aims to perform a histological analysis on gonad samples from European eels coming from four different lagoons of the North Adriatic at different stages of silvering, and to evaluate the maturation of the gonads. For this study, a total of 859 wild eels were captured from four different lagoons using the “lavoriero”. Subsequently, the biometric parameters were collected. Seventy-nine female eels were randomly selected, dissected, and the gonads were removed for histological analysis. Sections of 4 m were cut and stained with hematoxylin and eosin (H&amp;E). Histological observations of germ cells at the light microscopy level allowed for the characterization of six steps of oocyte maturation. Valle di Comacchio had the highest levels of oocyte maturation, while Valle Ca’ Pasta had the lowest. Eels with silver index III had an oocyte maturation nearly equal to that of eels at stages IV and V of silvering. Considering the results, we can affirm that eels from North Adriatic lagoons have high oocyte maturation levels and high GSI value indices at silvering stage III. The following experimental work shows that the levels of oocyte maturation are higher even at lower silver index levels. It can be hypothesized that in these eels, the transition from yellow to silver eel occurs faster in relation to the high trophic availability in North Adriatic lagoons

Tradução e gênero. Conversando com Luise von Flotow

This interview between Luise von Flotow and the guest editors was carried out online in March 2022. Flotow was the keynote speaker at the 9th IATIS Regional Workshop “Perspectives on Translation, Feminisms and Gender from Latin America,” held online in La Plata, Argentina, in 2020. This event, which gathered scholars mostly from Argentina and Brazil, aimed at engaging in fruitful dialogues between established and emerging paradigms in the field of feminist translation studies. It particularly intended to explore transnational perspectives within the field of feminist translation (studies). This conversation with Flotow, a founding and leading figure of the field, aims at pursuing this agenda further by disseminating her views on gender issues and translation, feminist translation, queer approaches to translation, transnational dialogues, and methodological insights. Esta entrevista entre Luise von Flotow y las editoras invitadas se llevó a cabo en línea en marzo de 2022. Flotow fue la oradora principal del 9th IATIS Regional Workshop “Perspectivas latinoamericanas sobre traducción, feminismos y género”, que tuvo lugar de manera virtual en la ciudad de La Plata, Argentina, en diciembre de 2020. Este foro, que reunió a especialistas principalmente de Argentina y Brasil, buscó instituir diálogos fructíferos entre paradigmas establecidos y emergentes en el campo de la traducción y de la traductología feministas. En particular, el coloquio buscó explorar perspectivas transnacionales en los ámbitos de la traducción feminista. Esta conversación con Flotow, una figura fundadora y referente del campo, se propone avanzar en esta agenda mediante la difusión de sus reflexiones sobre cuestiones de género y traducción, traducción feminista, enfoques queer de la traducción, diálogos transnacionales y aspectos metodológicos.Esta entrevista entre Luise von Flotow e as editoras convidadas foi realizada online em março de 2022. Flotow proferiu a conferência de abertura do 9º Workshop Regional do IATIS “Perspectivas latino-americanas sobre tradução, feminismos e gênero”, realizado online em La Plata, Argentina, em 2020. Este evento, que reuniu pesquisadores e pesquisadoras principalmente da Argentina e do Brasil, teve por objetivo estabelecer diálogos frutíferos entre paradigmas estabelecidos e emergentes no campo dos estudos feministas da tradução. Pretendia particularmente explorar as perspectivas transnacionais dos estudos da tradução feminista. Esta conversa com Flotow, uma figura fundadora e expoente da área, visa avançar essa proposta, compartilhando seus pontos de vista sobre questões de gênero e tradução, tradução feminista, abordagens queer à tradução, diálogos transnacionais e aspectos metodológicos

La perspectiva ética de Berman y su valoración en traducción literaria

En su conocida analítica de la traducción, Antoine Berman ([1985] 1999) postula una serie de tendencias que caracterizan la tarea de la traducción de la prosa literaria. Quien traduce se halla, según postula este autor, atravesado por esas tendencias “deformantes” (2014, p.55) de manera inconsciente. Prevalece, según propone Berman, un sistema de deformación textual que impide que la traducción sea evidencia y experiencia de lo extranjero y que tiende a obstaculizar un trabajo sobre la letra de los textos. Este sistema o analítica negativa de la traducción debe examinarse en virtud del carácter histórico-cultural conferido a las tendencias que lo componen. Como indica Mariano Sverdloff (2013), un mismo procedimiento de traducción puede tener y, de hecho, tiene implicancias diversas en sistemas literarios diferentes, razón por la que el análisis de un texto traducido debe siempre contemplar su inscripción en un espacio discursivo, sociohistórico y cultural específico. El trabajo consciente sobre esas tendencias conduciría a una traducción ética, que le dé cobijo a lo extranjero en el seno de una nueva lengua y de una nueva cultura. La perspectiva de Berman, que ha sido retomada y criticada en el campo de la traductología (Venuti, 1995; Charron, 2001; Gouanvic, 2001; Folkart, 2007), resulta adecuada para introducir y reflexionar sobre distintos problemas de traducción en un nivel de enseñanza inicial de la traducción literaria. Este capítulo tiene como objetivo principal presentar la propuesta ética de Berman y destacar su valor para el análisis de traducciones y el desarrollo de criterios autónomos frente a la labor traductora. A partir de una lectura guiada, se revisan las trece tendencias de la analítica negativa y se abre el camino hacia el estudio de un corpus de textos literarios traducidos del francés y del inglés al español. Estas actividades dan lugar, en una segunda instancia, al estudio de dos casos de traducción. De este modo, se pretende identificar problemas de traducción relativos al sistema de deformación textual descripto por Berman. Finalmente, y con el fin de contribuir a la formación más global en el campo de la traducción literaria, se propone la realización de traducciones alternativas capaces de reunir los distintos matices del texto fuente en la lengua y cultura de recepción de la traducción.Facultad de Humanidades y Ciencias de la Educació

HALOGAS: HI Observations and Modeling of the Nearby Edge-on Spiral Galaxy NGC 4244

We present 21-cm observations and models of the HI kinematics and distribution of NGC 4244, a nearby edge-on Scd galaxy observed as part of the Westerbork Hydrogen Accretion in LOcal GAlaxieS (HALOGAS) survey. Our models give insight into the HI kinematics and distribution with an emphasis on the potential existence of extra-planar gas as well as a negative gradient in rotational velocity with height above the plane of the disk (a lag). Our models yield strong evidence against a significantly extended halo and instead favor a warp component along the line of sight as an explanation for some of the observed thickening of the disk. Based on these models, we detect a lag of -9 +3/-2 km s-1 kpc-1 in the approaching half and -9 +/-2 km s-1 kpc-1 in the receding half. This lag decreases in magnitude to -5+/-2 km s-1 kpc-1 and -4+/-2 km s-1 kpc-1 near a radius of 10 kpc in the approaching and receding halves respectively. Additionally, we detect several distinct morphological and kinematic features including a shell that is probably driven by star formation within the disk.Comment: 18 pages, 14 figures, Full resolution version may be found at: http://www.astron.nl/halogas/papers/NGC4244.Zschaechner.arXiv.p