Objective: This project assessed college students' perceptions of social media conversations about COVID-19 in the United States. Participants: A total of 110 college students completed an online ...survey (N = 110) over two periods of time: April 2020 (n = 60) and September 2020 (n = 50). Method: Measurements included students' perceptions of sentiment, risk, blame, outrage, and opinion/behavioral intention. Results: Survey results showed that college students' attitudes and perceptions of these concepts on social media varied from April to September with negative sentiment, concern, uncertainty, and risk perception decreasing over time while blame and outrage increased over time. A sample of tweets was also examined for these constructs. Conclusions: This study provides important insight on college students' perceptions during a public health emergency and how they use social media as a tool for health information.
Understanding how a pathogen can grow on different substrates and how this growth impacts its dispersal are critical to understanding the risks and control of emerging infectious diseases. ...Pseudogymnoascus destructans (Pd) causes white-nose syndrome (WNS) in many bat species and can persist in, and transmit from, the environment. We experimentally evaluated Pd growth on common substrates to better understand mechanisms of pathogen persistence, transmission and viability. We inoculated autoclaved guano, fresh guano, soil, and wood with live Pd fungus and evaluated (1) whether Pd grows or persists on each (2) if spores of the fungus remain viable 4 months after inoculation on each substrate, and (3) whether detection and quantitation of Pd on swabs is sensitive to the choice to two commonly used DNA extraction kits. After inoculating each substrate with 460,000 Pd spores, we collected ~ 0.20 g of guano and soil, and swabs from wood every 16 days for 64 days to quantify pathogen load through time using real-time qPCR. We detected Pd on all substrates over the course of the experiment. We observed a tenfold increase in pathogen loads on autoclaved guano and persistence but not growth in fresh guano. Pathogen loads increased marginally on wood but declined ~ 60-fold in soil. After four months, apparently viable spores were harvested from all substrates but germination did not occur from fresh guano. We additionally found that detection and quantitation of Pd from swabs of wood surfaces is sensitive to the DNA extraction method. The commonly used PrepMan Ultra Reagent protocol yielded substantially less DNA than did the QIAGEN DNeasy Blood and Tissue Kit. Notably the PrepMan Ultra Reagent failed to detect Pd in many wood swabs that were detected by QIAGEN and were subsequently found to contain substantial live conidia. Our results indicate that Pd can persist or even grow on common environmental substrates with results dependent on whether microbial competitors have been eliminated. Although we observed clear rapid declines in Pd on soil, viable spores were harvested four months after inoculation. These results suggest that environmental substrates and guano can in general serve as infectious environmental reservoirs due to long-term persistence, and even growth, of live Pd. This should inform management interventions to sanitize or modify structures to reduce transmission risk as well early detection rapid response (EDRR) planning.
Full text
Available for:
IZUM, KILJ, NUK, PILJ, PNG, SAZU, UL, UM, UPUK
•We summarize the literature on discrimination and inflammation.•We identify and describe conceptual and methodological limitations in the literature.•We underscore important directions for future ...research.
Exposure to discrimination or unfair treatment has emerged as an important risk factor for illness and disease that disproportionately affects racial and ethnic minorities. Discriminatory experiences may operate like other stressors in that they activate physiological responses that adversely affect the maintenance of homeostasis. Research suggests that inflammation plays a critical role in the pathophysiology of stress-related diseases. Recent findings on discrimination and inflammation are discussed. We highlight limitations in the current evidence and provide recommendations for future studies that seek to examine the association between discrimination and inflammation.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Noninvasive genetic sampling is an important tool in wildlife ecology and management, typically relying on hair snaring or scat sampling techniques, but hair snaring is labor and cost intensive, and ...scats yield relatively low quality DNA. New approaches utilizing environmental DNA (eDNA) may provide supplementary, cost-effective tools for noninvasive genetic sampling. We tested whether eDNA from residual saliva on partially-consumed Pacific salmon (Oncorhynchus spp.) carcasses might yield suitable DNA quality for noninvasive monitoring of brown bears (Ursus arctos). We compared the efficiency of monitoring brown bear populations using both fecal DNA and salivary eDNA collected from partially-consumed salmon carcasses in Southeast Alaska. We swabbed a range of tissue types from 156 partially-consumed salmon carcasses from a midseason run of lakeshore-spawning sockeye (O. nerka) and a late season run of stream-spawning chum (O. keta) salmon in 2014. We also swabbed a total of 272 scats from the same locations. Saliva swabs collected from the braincases of salmon had the best amplification rate, followed by swabs taken from individual bite holes. Saliva collected from salmon carcasses identified unique individuals more quickly and required much less labor to locate than scat samples. Salmon carcass swabbing is a promising method to aid in efficient and affordable monitoring of bear populations, and suggests that the swabbing of food remains or consumed baits from other animals may be an additional cost-effective and valuable tool in the study of the ecology and population biology of many elusive and/or wide-ranging species.
Full text
Available for:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Allen's daughter was barely a week into middle school when she expressed apprehension about taking the STAR reading test. Coupled with her generalized anxiety about adjusting to middle school and all ...of the newness it entails--learning a new building, getting to know new teachers, discovering new friends, navigating a new schedule--it all bubbled up and became overwhelming. They hadn't even made it out of the car pick-up line, and Julia was already fretting about that STAR test: "I don't know why I'm so nervous about that test. It's not like I haven't taken it a hundred times. I think I have post-traumatic test disorder." She intentionally emphasized the word "test," as if to be sure I knew she wasn't saying "stress." Glancing in the rearview mirror, she caught a glimpse of her watery eyes. Normally cheerful and bright-eyed, her face was a canvas of anxiety. Her voice carried disappointment and defeat. "Sweet Jules," she said reassuringly, "You know that one test doesn't define you and certainly can't capture your abilities." She gave an unconvincing nod.
•We used data from a nationally representative survey fielded from January to March 2021.•COVID-19 vaccine intent differed by race/ethnicity, income, age, and region/state.•Younger, lower income ...non-Hispanic Black adults were least likely to intend to vaccinate.•Main reason for lack of COVID-19 vaccination was concern about possible side effects.
COVID-19 morbidity and mortality has disproportionately affected vulnerable populations such as minority racial/ethnic groups. Understanding disparities in vaccine intentions and reasons for vaccine hesitancy are important for developing effective strategies for ameliorating racial/ethnic COVID-19 inequities.
Using six waves of the large, nationally representative Census Bureau’s Household Pulse Survey data from January 6-March 29, 2021 (n = 459,235), we examined national and state estimates for vaccination intent, defined as receipt of ≥ 1 dose of the COVID-19 vaccine or definite intent to be vaccinated, by race/ethnicity with stratification by household income and age group. In separate logistic regression models, we also examined the interaction between race/ethnicity and household income, and race/ethnicity and age group, and its association with vaccination intent. Lastly, we examined reasons for not vaccinating by race/ethnicity.
Vaccination intent differed by racial/ethnic group, household income, and age group nationally and by Health and Human Services (HHS) region and state. A significant interaction was observed between race/ethnicity and household income (F(8,72) = 4.50, p < 0.001), and race/ethnicity and age group (F(8,72) = 15.66, p < 0.001). Non-Hispanic Black adults with lower income (<$35,000) and younger age (18–49 years) were least likely to intend to vaccinate. Similar disparities across racial/ethnic groups were seen across most HHS regions and states. Concerns about possible side effects and effectiveness were significantly higher among all minority groups compared to non-Hispanic White adults.
Disparities in vaccination intent by racial/ethnic groups underscore the need for interventions and recommendations designed to improve vaccination coverage and confidence in underserved communities, such as younger and lower income racial/ethnic minority groups. Efforts to reduce disparities and barriers to vaccination are needed to achieve equity in vaccination coverage, and ultimately, to curb COVID-19 transmission.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
The chemical and electrochemical reactions at the positive electrode–electrolyte interface in Li-ion batteries are hugely influential on cycle life and safety. Ni-rich layered transition metal oxides ...exhibit higher interfacial reactivity than their lower Ni-content analogues, reacting via mechanisms that are poorly understood. Here, we study the pivotal role of the electrolyte solvent, specifically cyclic ethylene carbonate (EC) and linear ethyl methyl carbonate (EMC), in determining the interfacial reactivity at charged LiNi0.33Mn0.33Co0.33O2 (NMC111) and LiNi0.8Mn0.1Co0.1O2 (NMC811) cathodes by using both single-solvent model electrolytes and the mixed solvents used in commercial cells. While NMC111 exhibits similar parasitic currents with EC-containing and EC-free electrolytes during high voltage holds in NMC/Li4Ti5O12 (LTO) cells, this is not the case for NMC811. Online gas analysis reveals that the solvent-dependent reactivity for Ni-rich cathodes is related to the extent of lattice oxygen release and accompanying electrolyte decomposition, which is higher for EC-containing than EC-free electrolytes. Combined findings from electrochemical impedance spectroscopy (EIS), TEM, solution NMR, ICP, and XPS reveal that the electrolyte solvent has a profound impact on the degradation of the Ni-rich cathode and the electrolyte. Higher lattice oxygen release with EC-containing electrolytes is coupled with higher cathode interfacial impedance, a thicker oxygen-deficient rock-salt surface reconstruction layer, more electrolyte solvent and salt breakdown, and higher amounts of transition metal dissolution. These processes are suppressed in the EC-free electrolyte, highlighting the incompatibility between Ni-rich cathodes and conventional electrolyte solvents. Finally, new mechanistic insights into the chemical oxidation pathways of electrolyte solvents and, critically, the knock-on chemical and electrochemical reactions that further degrade the electrolyte and electrodes curtailing battery lifetime are provided.
Full text
Available for:
IJS, KILJ, NUK, PNG, UL, UM
•15% are unvaccinated, 17% are not fully vaccinated, and 45% are not boosted•Vaccination coverage was lowest for younger age groups for all vaccination categories•Booster doses were lowest among ...adults with lower education and income•Frontline and family business workers were less likely to be vaccinated•Main reasons for not being vaccinated were concerns about side effects (53.4%)
We assessed COVID-19 vaccination coverage (≥ 1 dose, full vaccination, and booster vaccination) using a large, nationally representative survey of U.S. households (December 29, 2021 – January 10, 2022). Almost 1 in 6 adults have not been vaccinated or not been fully vaccinated, and almost one-half have not received a booster vaccine. All eligible individuals should receive the recommended number of vaccines to prevent further transmission of COVID-19.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
To assess trends in and factors associated with COVID-19 vaccination coverage, data from the Household Pulse Survey were analyzed. From April to August 2021, vaccination coverage with at least 1 dose ...increased from 70%-82%, while vaccination intent increased from 82%-86%, with the highest increase among the most vulnerable groups. More efforts are needed to boost confidence in vaccines and to encourage all eligible people to be fully vaccinated.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
The importance of parents in the transmission of educational aspirations to children is well-established. However, little is known about the quality of parent-child communication about educational ...aspirations and how this communication relates to children’s educational aspirations in socioeconomically disadvantaged families in rural China. In this study, we sought to gain insight into parent-child communication around educational aspirations from the perspective of Chinese rural adolescents. Twenty-three grade-9 students were recruited from middle schools in Songzi, a poor rural county in central China. Participants comprised 12 boys and 11 girls aged 14 to 16 years (
M
= 14.65 years, SD = 0.59). Students completed one-to-one qualitative interviews about parent-child communication and their educational aspirations in June 2020. Thematic analysis revealed that adolescents’ educational aspirations were strongly influenced by their parents’ beliefs and aspirations for them, with fulfilling parental aspirations and achieving economic success being important influences on rural adolescents’ educational aspirations. However, parent-child communication quality was undermined when parents had an authoritarian communication style and when parents were absent due to rural-urban migration, in which case adolescents reported stress and perceived lack of support in achieving their goals. In addition, mothers were viewed as playing a more vital role in communication than fathers. The implications of the findings for school and community-based interventions promoting rural parents’ ability to communicate effectively with their children about academic concerns are discussed.
Highlights
This is the first qualitative study to explore parent-child communication around educational aspirations in Chinese rural families.
Adolescents identified fulfilling parental aspirations and achieving economic success as the main influences on their aspirations.
An authoritarian parenting style and/or parental absence were related to poor quality parent-child communication.
Most rural adolescents reported being stressed and lacking support in achieving their educational goals.
Caregivers with an authoritarian style need support to improve their communication skills to positively motivate rural youth.
Full text
Available for:
EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
PDF
