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ID31519032Published Date2020-01-01JournalThe New phytologist, 2020-01-01, Volume 225
Plant species are characterized along a spectrum of isohydry to anisohydry depending on their regulation of water potential (Ψ), but the plasticity of hydraulic strategies is largely unknown. The role of environmental drivers was evaluated in the hydraulic behavior of Larrea tridentata, a drought-tolerant desert shrub that withstands a wide range of environmental conditions. With a 1.5 yr time-series of 2324 in situ measurements of daily predawn and midday Ψ, the temporal variability of hydra…
Publication
ID31639378Published Date2020-01-01JournalPhysiology & behavior, 2020-01-01, Volume 213
Previous studies have demonstrated that food consumption induces the behavioral satiety sequence (BSS) in some animals, a characteristic series of activities which include exploration, grooming, and resting. The BSS, while valuable in assessing the effects of drugs on food intake, has not been widely studied in non-mammalian species. Our experiment examined post-feeding behavior in crayfish using continuous recording of five behaviors: feeding, walking, grooming, leg wave, and quiescence. We …
Publication
ID31834600Published Date2019-12-13JournalJournal of racial and ethnic health disparities, 2019-12-13
Are there disparities in depressive symptoms among immigrant groups from different countries? With data from the New Immigrant Survey (2003), which includes immigrants from Mexico, Haiti, Dominican Republic, Cuba, and Jamaica, this paper examines the odds of depressive symptoms using a series of logistic regression analyses. It draws on segmented assimilation and the cumulative inequality theories to understand and explicate the extent to which immigrants' demographic characteristics, pre-imm…
Publication
ID31825096Published Date2019-12-11JournalJournal of phycology, 2019-12-11
Snow or glacial algae are found on all continents, and most species are in the Chlamydomonadales (Chlorophyta) and Zygnematales (Streptophyta). Other algal groups include euglenoids, cryptomonads, chrysophytes, dinoflagellates, and cyanobacteria. They may live under extreme conditions of temperatures near 0ºC, high irradiance levels in open exposures, low irradiance levels under tree canopies or deep in snow, acidic pH, low conductivity, and desiccation after snow melt. These primary producer…
Publication
ID31823671Published Date2019-12-11JournalAmerican journal of physiology. Regulatory, integrative and comparative physiology, 2019-12-11
Phenotypic flexibility has received considerable attention in the last decade; however, whereas many studies have reported amplitude of variation in phenotypic traits, much less attention has focused on the rate at which traits can adjust in response to sudden changes in the environment. We investigated whole-animal and muscle phenotypic changes occurring in black-capped chickadees () acclimated to cold (-5°C) and warm (20°C) temperatures in the first 3 hours following a 15°C temperature drop…
Publication
ID31839365Published Date2019-12-05JournalEuropean journal of cell biology, 2019-12-05
Krüppel-like factor 4 (Human Protein: KLF4; Human Gene: Klf4; Murine Protein: KLF4; Murine Gene: Klf4) is a zinc finger-containing transcription factor with diverse regulatory functions. Mouse embryonic fibroblasts (MEFs) lacking Klf4 exhibit genomic instability, increased reactive oxygen species (ROS), and decreased autophagy. Elevated ROS is linked to impairments in mitochondrial damage recovery responses and is often tied to disruption in mitochondrial-targeted autophagy known as mitophagy…
Publication
ID31753056Published Date2019-11-22JournalInfection control and hospital epidemiology, 2019-11-22
The learning hospital is distinguished by ceaseless evolution of erudition, enhancement, and implementation of clinical best practices. We describe a model for the learning hospital within the framework of a hospital infection prevention program and argue that a critical assessment of safety practices is possible without significant grant funding. We reviewed 121 peer-reviewed manuscripts published by the VCU Hospital Infection Prevention Program over 16 years. Publications included quasi-exp…
Publication
ID31630154Published Date2019-11-15JournalAnnals of botany, 2019-11-15, Volume 124
Through careful field examination of the growth habit of the gametophytes and sporophytes of Hymenasplenium volubile across an ontogenetic series, we aim to understand better the evolution of epiphytism in this poorly understood group of ferns.We made field observations of H. volubile sporophytes and gametophytes, and brought specimens back to the lab for microscopic analysis. In the field, sporophytes at each ontogenetic stage were photographed to document the species' growth habit. We used …
Publication
IDDOI:10.1177/1948550619876638Published Date2019-11-12JournalSocial Psychological and Personality Science, 2019-11-12
Violent encounters between police and Black people have spurred debates about how race affects officer decision-making. We propose that racial disparities in police–civilian interactions are amplified when police interact with Black civilians who are encountered in groups. To test this possibility, we analyzed New York City stop and frisk data for over 2 million police stops. Results revealed that Black (vs. White) people were more likely to be frisked, searched, arrested, and have force used…
Publication
IDDOI:10.1093/geroni/igz038.2341Published Date2019-11-08JournalInnovation in Aging, 2019-11-08, Volume 3
Abstract Across the US, millions of grandparents are providing vital care for their grandchildren with disabilities when their adult children are in need of assistance and public programs do not provide needed supports. Research suggests the impact on grandparent physical health is mixed. This paper draws on in-depth interviews with 50 grandparents to explore how caring for grandchildren with disabilities shapes their physical wellbeing. We use life course perspective to assess the choices gr…
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