Direct numerical simulations are carried out to study the effect of finite Weissenberg number up to $Wi=16$ on laminar and turbulent channel flows of an elastoviscoplastic (EVP) fluid, at a fixed bulk Reynolds number of $2800$. The incompressible flow equations are coupled with the evolution equation for the EVP stress tensor by a modified Saramito model that extends both the Bingham viscoplastic and the finite extensible nonlinear elastic-Peterlin (FENE-P) viscoelastic models. In turbulent flow, we find that drag decreases with both the Bingham and Weissenberg numbers, until the flow laminarises at high enough elastic and yield stresses. Hence, a higher drag reduction is achieved than in the viscoelastic flow at the same Weissenberg number. The drag reduction persists at Bingham numbers up to 20, in contrast to viscoplastic flow, where the drag increases in the laminar regime compared with a Newtonian flow. Moreover, elasticity affects the laminarisation of an EVP flow in a non-monotonic fashion, delaying it at lower and promoting it at higher Weissenberg numbers. A hibernation phenomenon is observed in the EVP flow, leading to large changes in the unyielded regions. Finally, plasticity is observed to affect both low- and high-speed streaks equally, attenuating the turbulent dissipation and the fragmentation of turbulent structures.

A chloroacetamide herbicide by application timing factorial experiment was conducted in 2017 and 2018 in Mississippi to investigate chloroacetamide use in a dicamba-based Palmer amaranth management program in cotton production. Herbicides used were S-metolachlor or acetochlor, and application timings were preemergence, preemergence followed by (fb) early postemergence, preemergence fb late postemergence, early postemergence alone, late postemergence alone, and early postemergence fb late postemergence. Dicamba was included in all preemergence applications, and dicamba plus glyphosate was included with all postemergence applications. Differences in cotton and weed response due to chloroacetamide type were minimal, and cotton injury at 14 d after late postemergence application was less than 10% for all application timings. Late-season weed control was reduced up to 30% and 53% if chloroacetamide application occurred preemergence or late postemergence only, respectively. Late-season weed densities were minimized if multiple applications were used instead of a single application. Cotton height was reduced by up to 23% if a single application was made late postemergence relative to other application timings. Chloroacetamide application at any timing except preemergence alone minimized late-season weed biomass. Yield was maximized by any treatment involving multiple applications or early postemergence alone, whereas applications preemergence or late postemergence alone resulted in up to 56% and 27% yield losses, respectively. While no yield loss was reported by delaying the first of sequential applications until early postemergence, forgoing a preemergence application is not advisable given the multiple factors that may delay timely postemergence applications such as inclement weather.

Brain research in Europe is a rapidly evolving field, and increasingly at the forefront of science. Although considerable amounts of knowledge and innovative approaches have been generated, the translation into new health interventions is hindered by excessive fragmentation. Effective and efficient collaboration and cooperation among the various initiatives are often identified as a key success factor to achieve brain research full impact. EBRA fully responds to these needs by bringing together the various stakeholders and major brain research initiatives, at European level and beyond. EBRA creates the conditions for real and effective cross fertilisation, dialogue, building consensus and exploiting research potential. On the operational level, EBRA facilitates the emergence of research projects in specific areas in active clusters. A cluster is understood as a research community that can be directed towards basic research, clinical research and/or methodological approaches under a common topic and disease area within brain research. EBRA support clusters to: 1. Consolidate or expand further the research community expand their community, 2. Engage with policy makers and other relevant stakeholders, 3. Build consensus on various issues (research priorities, research roadmap, data sharing, etc.), 4. Promote links with existing research infrastructures, 5. Increase the visibility of the research community through communication and dissemination activities, 6. Coordinate the development of position/consensus papers, white papers, guidelines, meeting reports and/or other cluster outcomes. EBRA currently has 6 existing clusters: EPICLUSTER, Prevention of Severe Mental Disorders (PSMD)-cluster, TRISOMY21-cluster, BRAINFOOD-cluster., PREMOS-cluster and ECIB-cluster.

Brain research in Europe is a rapidly evolving field, and increasingly at the forefront of science. Although considerable amounts of knowledge and innovative approaches have been generated, the translation into new health interventions is hindered by excessive fragmentation. Effective and efficient collaboration and cooperation among the various initiatives are often identified as a key success factor to achieve brain research full impact. EBRA fully responds to these needs by bringing together the various stakeholders and major brain research initiatives, at European level and beyond. EBRA creates the conditions for real and effective cross fertilisation, dialogue, building consensus and exploiting research potential. At the strategic level, EBRA acts by fostering alignment and better coordination of research strategies across European and global brain initiatives. Therefore, an overview of the scale and scope of brain research activities funded in the EU framework programme and the funding initiatives of JPND, NEURON and HBP has been created. The results of the mapping exercise then underpinned the development of a Shared European Brain Research Agenda (SEBRA). The SEBRA focuses on research opportunities and research gaps to be addressed in the field, and priorities for action in the short- and long-term. It integrates pre-existing documents as well as expert (i.e., researchers, neurologists/psychiatrists, patient representatives) input that has been collected through surveys and in a dedicated expert workshop. The SEBRA will be used to provide recommendations on future areas for excellent, innovative, and translational research comprising those for maximized cooperation, reduced overlap, and fragmentation.

Several recent reports have raised concern that infected coworkers may be an important source of severe acute respiratory coronavirus virus 2 (SARS-CoV-2) acquisition by healthcare personnel. In a suspected outbreak among emergency department personnel, sequencing of SARS-CoV-2 confirmed transmission among coworkers. The suspected 6-person outbreak included 2 distinct transmission clusters and 1 unrelated infection.

Whole-plant soybean silage (WPSS) is a potential high-protein roughage source for ruminant diets. However, WPSS can be difficult to ensile and fermentation is a challenge. This study was conducted to evaluate the effect of chitosan and microbial inoculants on fermentation profile, fermentation losses, chemical composition, and in vitro degradation of WPSS. Forty experimental silos (PVC tubing with 28 cm i.d. and 25 cm height) were produced. Soybean plants from 10 plots were ensiled in a completely randomized block design to evaluate the following treatments: (1) control (CON): WPSS without additives; (2) chitosan (CHI): WPSS additive with 6 g/kg DM of chitosan; (3) LBB: WPSS treated with 5.0 × 107 colony-forming units (CFU) of Lactobacillus buchneri (NCIM 40788) per kg of fresh matter and (4) LPP: WPSS treated with 1.6 × 108 CFU of Lactobacillus plantarum and 1.6 × 108 CFU of Pediococcus acidilactici per kg of fresh matter. Silos were opened 120 days after ensiling. Microbial inoculants reduced silage pH, whereas LPP-treated silos showed the lowest concentration of NH3-N, ethanol, butyric, acetic, branched-chain, and propionic organic acids. LBB-treatment decreased lactic acid bacteria (LAB) count relative to other treatments, and LPP-treatment showed the lowest fermentation losses, improving dry matter (DM) recovery. Relative to other treatments, LPP increased silage DM, organic matter, and decreased acid detergent insoluble crude protein (CP), improving DM and neutral detergent fibre in vitro degradation. Treatments showed no effect on silage aerobic stability. Thus, LPP-treatment improves fermentation profile, reduces fermentation losses, and increases the nutritional value of WPSS.

This paper examines the role of core self-evaluations (CSEs) in the relationships among emotional demands, emotional dissonance, and depersonalization. Data were collected from a non-random sample of 423 teachers who worked in primary, secondary, and higher education institutions. Results from structural equation modeling analysis showed that CSEs displayed both direct and indirect effects on depersonalization through employees' perceptions and reactions to emotional labor. Specifically, those individuals with more positive CSEs tended to perceive the emotional aspects of their job as less demanding, thus being less likely to experience emotional dissonance and, in turn, depersonalization. This research demonstrated that CSEs play a vital role in explaining employees' reactions to emotional labor and, therefore, their effects should be properly accounted for in future studies. Implications for practice and future lines of research are discussed in this paper.

Vitamin D deficiency is associated with an increased risk of falls and fractures. Assuming this association is causal, we aimed to identify the number and proportion of hospitalisations for falls and hip fractures attributable to vitamin D deficiency (25 hydroxy D (25(OH)D) <50 nmol/l) in Australians aged ≥65 years. We used 25(OH)D data from the 2011/12 Australian Health Survey and relative risks from published meta-analyses to calculate population-attributable fractions for falls and hip fracture. We applied these to data published by the Australian Institute of Health and Welfare to calculate the number of events each year attributable to vitamin D deficiency. In men and women combined, 8·3 % of hospitalisations for falls (7991 events) and almost 8 % of hospitalisations for hip fractures (1315 events) were attributable to vitamin D deficiency. These findings suggest that, even in a sunny country such as Australia, vitamin D deficiency contributes to a considerable number of hospitalisations as a consequence of falls and for treatment of hip fracture in older Australians; in countries where the prevalence of vitamin D deficiency is higher, the impact will be even greater. It is important to mitigate vitamin D deficiency, but whether this should occur through supplementation or increased sun exposure needs consideration of the benefits, harms, practicalities and costs of both approaches.

Abstract

The rapid spread of the current COVID-19 pandemic has affected societies worldwide, leading to excess mortality, long-lasting health consequences, strained healthcare systems, and additional strains and spillover effects on other sectors outside health (i.e., intersectoral costs and benefits). In this perspective piece, we demonstrate the broader societal impacts of COVID-19 on other sectors outside the health sector and the growing importance of capturing these in health economic analyses. These broader impacts include, for instance, the effects on the labor market and productivity, education, criminal justice, housing, consumption, and environment. The current pandemic highlights the importance of adopting a societal perspective to consider these broader impacts of public health issues and interventions and only omit these where it can be clearly justified as appropriate to do so. Furthermore, we explain how the COVID-19 pandemic exposed and exacerbated existing deep-rooted structural inequalities that contribute to the wider societal impacts of the pandemic.

Let n be a positive integer and let $\mathbb{F} _{q^n}$ be the finite field with $q^n$ elements, where q is a prime power. We introduce a natural action of the projective semilinear group ${\mathrm{P}\Gamma\mathrm{L}} (2, q^n)={\mathrm{PGL}} (2, q^n)\rtimes {\mathrm{Gal}} ({\mathbb F_{q^n}} /\mathbb{F} _q)$ on the set of monic irreducible polynomials over the finite field $\mathbb{F} _{q^n}$ . Our main results provide information on the characterisation and number of fixed points.

In premodern economic systems where the social embedding of exchange provided actors with the ability to control or monopolize trade, including the goods that enter and leave a marketplace, “restricted markets” formed. These markets produced external revenues that could be used to achieve political goals. Conversely, commercialized systems required investment in public goods that incentivize the development of market cooperation and “open markets,” where buyers and sellers from across social sectors and diverse communities could engage in exchange as economic equals within marketplaces. In this article, we compare market development at the Late Postclassic sites of Chetumal, Belize, and Tlaxcallan, Mexico. We identified a restricted market at Chetumal, using the distribution of exotic goods, particularly militarily and ritually charged obsidian projectile points; in contrast, an open market was built at Tlaxcallan. Collective action theory provides a useful framework to understand these differences in market development. We argue that Tlaxcaltecan political architects adopted more collective strategies, in which open markets figured, to encourage cooperation among an ethnically diverse population.