1,497 research outputs found

    Preparación del personal de Ferrocarriles

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    Cumulative Childhood Adversity and Disparities in Adult Psychological Distress and Educational Attainment

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    Exposure to childhood adversity often does not occur as an isolated experience; rather, adverse childhood circumstances tend to co-occur, resulting in a climate of disadvantage that has detrimental consequences, and contributes to disparities in adult outcomes. Although the enduring impacts of cumulative childhood adversity on adult mental health and attainment outcomes are well documented in the literature, studies have not accounted for the long-term impact of cumulative childhood adversity on trajectories of adult psychological distress. Furthermore, measures of adversity used to predict selection into higher education consistently focus on childhood economic hardship as the sole indicator of adversity and overlook the co-occurrence of adversities during childhood. Limitations in previous measures of cumulative childhood adversity further hinder an overall understanding of processes of cumulative adversity that contribute to disparities in adult mental health and educational attainment. Previous studies consider a limited number of adversities, overlook the potential heterogeneity across experiences of adversity, and vary in the conceptualization and measurement of cumulative childhood adversity. These discrepancies in measures have led to inconsistent conclusions regarding the overall impact of multiple adverse childhood experiences on adult outcomes. Drawing from the life course perspective and the stress process model, the current dissertation uses data from the Panel Study of Income Dynamics’ Childhood Retrospective Circumstances Study in order to identify a more comprehensive measure of cumulative childhood adversity that takes into account the heterogeneity and co-occurrence of adversities during childhood. Cumulative histories of exposure to co-occurring adversities are identified using latent class analysis, and used in subsequent papers to predict trajectories of psychological distress and selection into higher education. Overall, results indicate that adversities have a high probability of co-occurring, and that variations in patterns of exposure to childhood adversity have important implications for psychological distress and educational attainment

    Growth of Hybrid Sunfishes and Channel Catfish at Low Temperatures

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    The growth of hybrid sunfish (male bluegill, Lepomis macrochirus x female green sunfish, L. cyanellus) and channel catfish (Ictalurus puncrates) below 15 C was determined in ponds on natural food and in cages on artificial feed. In all cases, the hybrids gained weight, while the channel catfish lost weight

    Environmental conditions can modulate the links among oxidative stress, age, and longevity

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    Understanding the links between environmental conditions and longevity remains a major focus in biological research. We examined within-individual changes between early- and mid-adulthood in the circulating levels of four oxidative stress markers linked to ageing, using zebra finches (Taeniopygia guttata): a DNA damage product (8-hydroxy-2′-deoxyguanosine; 8-OHdG), protein carbonyls (PC), non-enzymatic antioxidant capacity (OXY), and superoxide dismutase activity (SOD). We further examined whether such within-individual changes differed among birds living under control (ad lib food) or more challenging environmental conditions (unpredictable food availability), having previously found that the latter increased corticosterone levels when food was absent but improved survival over a three year period. Our key findings were: (i) 8-OHdG and PC increased with age in both environments, with a higher increase in 8-OHdG in the challenging environment; (ii) SOD increased with age in the controls but not in the challenged birds, while the opposite was true for OXY; (iii) control birds with high levels of 8-OHdG died at a younger age, but this was not the case in challenged birds. Our data clearly show that while exposure to the potentially damaging effects of oxidative stress increases with age, environmental conditions can modulate the pace of this age–related change

    A White Paper on the status and needs of largemouth bass culture in the North Central Region

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    Largemouth bass (Micropterus salmoides) are the most sought-after freshwater sport fish in the United States. Largemouth bass are a member of the family Centrarchidae. Currently the genus Micropterus contains seven species. As part of the development of the new strategic plan, the North Central Regional Aquaculture Center (NCRAC) is trying to address the concern that the long-term focus of research goals and priorities may be lost because the NCRAC Board of Directors (Board) and the Industry Advisory Council memberships change over time. The Board in the June 1999 meeting directed that an updateable white paper be written on largemouth bass. The white paper is not an exhaustive literature review, but a working document that defines the current status of largemouth bass culture including the critical factors limiting the economic production in order to make recommendations for future research. Industry participation and peer reviews are critical components for the evolution of this document

    An investigation of the concepts guilt and \u27asham in the Old Testament

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    https://place.asburyseminary.edu/ecommonsatsdissertations/2196/thumbnail.jp

    Poverty in old age in times of COVID-19 - Empirical results from Austria

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    Early in the pandemic, researchers were cautioning that COVID-19 and the associated health policy countermeasures would have an increased negative impact on groups that were already vulnerable before the pandemic. One of these groups are older people affected by poverty, who according to official figures make up 13.9% of older population in Austria. Even before the pandemic, their living situation was considered precarious. Not without reason, this group has been identified as a high-risk group of the pandemic, due to their increased likelihood of severe COVID-19 related illness and their limited monetary resources and thus lower chances of coping with the pandemic. Nevertheless, research on this group has remained sparse to date. Therefore, the aim of the study is to focus on older people (60+ years) below the poverty line and to compare them with non-poor individuals. Data from the SHARE (Survey of Health Aging and Retirement in Europe) project is used, combining data from the two SHARE Corona Surveys (summer 2020 and summer 2021) and the SHARE Corona Special Austria Survey (December 2020) to gain the most complete picture of life situation during the pandemic. Results demonstrate that older people in poverty were more likely to report poor subjective health before as well as during the pandemic yet were significantly more likely to refuse vaccination against COVID-19, despite adhering to other measures against the pandemic to the same extent as non-poor people. Restrictions in the health care system affected both groups equally and no significant differences in the frequency of social contacts could be found. However, older people below the poverty line were significantly more likely to rely on social support to obtain necessities during the pandemic and were less likely to use the internet. Together, these results point out that disadvantage exist for the older poor in some but not all areas of life during the pandemic. This paper is aimed at providing first insights into the lives of poor older persons during a taxing time and may perhaps inspire more in-depth study of this particularly understudied population

    Consumers' behavior in quantitative microbial risk assessment for pathogens in raw milk: Incorporation of the likelihood of consumption as a function of storage time and temperature

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    Foodborne disease as a result of raw milk consumption is an increasing concern in Western countries. Quantitative microbial risk assessment models have been used to estimate the risk of illness due to different pathogens in raw milk. In these models, the duration and temperature of storage before consumption have a critical influence in the final outcome of the simulations and are usually described and modeled as independent distributions in the consumer phase module. We hypothesize that this assumption can result in the computation, during simulations, of extreme scenarios that ultimately lead to an overestimation of the risk. In this study, a sensorial analysis was conducted to replicate consumers' behavior. The results of the analysis were used to establish, by means of a logistic model, the relationship between time\u2013temperature combinations and the probability that a serving of raw milk is actually consumed. To assess our hypothesis, 2 recently published quantitative microbial risk assessment models quantifying the risks of listeriosis and salmonellosis related to the consumption of raw milk were implemented. First, the default settings described in the publications were kept; second, the likelihood of consumption as a function of the length and temperature of storage was included. When results were compared, the density of computed extreme scenarios decreased significantly in the modified model; consequently, the probability of illness and the expected number of cases per year also decreased. Reductions of 11.6 and 12.7% in the proportion of computed scenarios in which a contaminated milk serving was consumed were observed for the first and the second study, respectively. Our results confirm that overlooking the time\u2013temperature dependency may yield to an important overestimation of the risk. Furthermore, we provide estimates of this dependency that could easily be implemented in future quantitative microbial risk assessment models of raw milk pathogens
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