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s and future directions of research are discussed.This paper explores occupational safety and health regulation in Great Britain following the UK's exit from the European Union. In particular, the paper focuses on the credibility of regulatory enforcement. The prospects raised by the UK's exit from the European Union have long been part of a free-market fantasy-even obsession-of right-wing politicians and their ideologues. As the UK's relationship with the EU is recalibrated, this will present right-wing opportunists with a new rationale for undermining health and safety law and enforcement. The paper uses empirical evidence of Great Britain's record in health and safety law enforcement to evidence a drift towards an extreme form of self-regulation. It deepens this evidence with a detailed analysis of key international policy debates, arguing that Brexit now raises an imminent threat of the UK entering a 'race to the bottom'. The paper concludes that the 2021 EU/UK Trade and Co-operation Agreement may enable the UK to evade its formal health and safety responsibilities under the treaty because of the lack of the prospect of significant retaliatory 'rebalancing' measures. Should minimal health and safety requirements cease to apply in the post-EU era, then the UK Government will be free to pursue a system of self-regulation that will allow health and safety standards to fall even further behind those of other developed economies.In this paper, two trophic lakes Lake Taihu and Lake Yanghe, and three alpine lakes Lake Qinghai, Lake Keluke, and Lake Tuosu, were investigated to discover the connections between environmental factors and the phytoplankton community in lakes with differences in trophic levels and climatic conditions. Three seasonal data, including water quality and phytoplankton, were collected from the five lakes. The results demonstrated clear differences in water parameters and phytoplankton compositions in different lakes. The phytoplankton was dominated by Bacillariophyta, followed by Cyanobacteria and Chlorophyta in Lake Qinghai, Lake Keluke, and Lake Tuosu. It was dominated by Cyanobacteria (followed by Chlorophyta and Bacillariophyta in Lake Yanghe) and Cyanobacteria (followed by Chlorophyta and Cryptophyta in Lake Taihu). The temperature was an essential factor favoring the growth of Cyanobacteria, Chlorophyta, and Bacillariophyta, especially Cyanobacteria and Chlorophyta. The pH had significantly negative relationships with Cyanobacteria, Chlorophyta, and Bacillariophyta. Particularly, a high pH might be a strong and negative factor for phytoplankton growth in alpine lakes. A high salinity was also an adverse factor for phytoplankton. Those results could provide fundamental information about the phytoplankton community and their correlated factors in the alpine lakes of the Tibetan Plateau, contributing to the protection and management of alpine lakes.Evidence points to an indirect relationship between transformational leadership (TFL) and employee well-being, and numerous work characteristics have been identified as mediators. However, the relative mediating effect of different types of job resources and job demands on the TFL-well-being relationship remains unclear, rendering it impossible to determine which ones are the most influential. This study aims to provide a comprehensive analysis of the relative mediation potential of different work characteristics in the TFL-well-being relationship in multiple three-level meta-analytical structural equation models of 243 samples. Based on the JD-R Model, this study extends this theoretical framework by suggesting TFL as a predisposing variable that influences both job resources and job demands, leading to changes in indicators of both positive and negative employee well-being. The results show that, while all the examined job resources and demands mediated the TFL-well-being relationship, organizational resources were identified as the strongest mediators. Furthermore, job demands had a strong mediating effect on the relationship between TFL and negative well-being, while job resources more strongly mediated TFL and positive well-being. We present a differentiated picture of how transformational leaders can influence their employees' well-being at the workplace, providing valuable knowledge for future research and practice.Students experience different levels of acute and chronic stress during the academic year. Selected salivary biochemical parameters change as a result of stress. Our preliminary study aimed to indicate possible links between alterations in the salivary biochemical parameters (such as cortisol and total antioxidant status) and different accompanying stress levels in dental students during the academic year. The study group consisted of 20 volunteer dental students at the Poznan University of Medical Sciences-both genders, aged 20-26 years. Students were asked to fill in the electronic version of the author's survey on experiencing and coping with stress. Samples of unstimulated saliva were collected in the morning and late evening at four-time points in the middle of the academic year, during the examination period, at the beginning of the academic year, and in the middle of the following academic year, together with a determination of currently experienced stress on the Stress Numerical Rating Scale-11. According to the circadian rhythm of cortisol secretion, morning levels of the hormone in saliva were much higher than in the evening. In evening cortisol, significant differences were observed during the studied periods-the highest level was found at the beginning of the academic year. However, the morning cortisol concentrations correlated more strongly with the declared stress levels and showed better predictability for high-stress levels. Salivary morning cortisol could be a potential marker of academic stress levels. Further studies are needed on a larger group to confirm.Most vulnerable individuals are particularly affected by the COVID-19 pandemic. This study takes place in a large city in France. The aim of this study is to describe the mobility of the homeless population at the beginning of the health crisis and to analyze its impact in terms of COVID-19 prevalence. From June to August 2020 and September to December 2020, 1272 homeless people were invited to be tested for SARS-CoV-2 antibodies and virus and complete questionnaires. Our data show that homeless populations are sociologically different depending on where they live. We show that people that were living on the street were most likely to be relocated to emergency shelters than other inhabitants. Some neighborhoods are points of attraction for homeless people in the city while others emptied during the health crisis, which had consequences for virus circulation. People with a greater number of different dwellings reported became more infected. This first study of the mobility and epidemiology of homeless people in the time of the pandemic provides unique information about mobility mapping, sociological factors of this mobility, mobility at different scales, and epidemiological consequences. We suggest that homeless policies need to be radically transformed since the actual model exposes people to infection in emergency.School-based health promotion interventions have been shown to lead to measurable changes in the nutrition and physical activity behaviors. This study examines whether the impact of an intervention program on students' healthy eating and physical activity was mediated by teacher training and engagement in health promotion. The trial was conducted in three phases needs assessment of the baseline survey of teachers, mothers' and children; intervention among seven randomly selected schools that included teacher training in healthy eating and physical activity; and a post-intervention evaluation survey. The SPSS PROCESS for Hayes (Model8) was used to determine moderation and mediation effects. The difference in difference (DID) was calculated for the three main outcomes of the study eating breakfast daily (DID = 17.5%, p < 0.001); consuming the recommended servings of F&V (DID = 29.4%, p < 0.001); and being physically active for at least 5 days/week (DID = 45.2%, p < 0.001). Schoolchildren's eating breakfast daily was mediated by their teachers' training in nutrition (β = 0.424, p = 0.002), teachers' engagement (β = 0.167, p = 0.036), and mothers preparing breakfast (β = 1.309, p < 0.001). Schoolchildren's consumption of F&V was mediated by teachers' engagement (β = 0.427, p = 0.001) and knowing the recommended F&V servings (β = 0.485, p < 0.001). Schoolchildren's physical activity was mediated by their teachers' training in physical activity (β = 0.420, p = 0.020) and teachers' engagement (β = 0.655, p < 0.001). Health behavior changes in the school setting including improvements in eating breakfast, consuming the recommended F&V and physical activity was mediated by teacher training and engagement. Effective teacher training leading to teacher engagement is warranted in the design of health-promotion interventions in the school setting.
To explore whether baseline matrix metalloproteinase (MMP)-8 level in gingival crevicular fluid (GCF) (exposure) can predict the outcome (reduction in probing pocket depth (PPD) (outcome)) of nonsurgical periodontal therapy (NSPT) (manual or ultrasonic or both) in patients with periodontitis (population/problem) after 3 months.
Six databases (PubMed, Cochrane library, ProQuest, Ovid, Scopus, EBSCO) were searched for relevant articles published until 30 July 2021. Retrieved articles were passed through a three-phase filtration process on the basis of the eligibility criteria. The primary outcome was the change in PPD after 3 months. Quality of the selected articles was assessed using Cochrane Risk of Bias tool (RoB2) and Risk of Bias In Non-Randomized Studies of Interventions (ROBINS-I) tools.
From 1306 articles, five were selected for analysis. The results showed high variations in the level of GCF MMP-8 level at baseline. The average amount of reduction in PPD was 1.20 and 2.30 mm for pockets with initial depth of 4-6 mm and >6 mm, respectively.
On the basis of available evidence, it was not possible to reach a consensus on the ability of baseline GCF MMP-8 to forecast the outcome of NSPT. LTGO-33 cell line This could have been due to variation in clinical and laboratory techniques used. However, consistency in mean PPD reduction after 3 months was shown.
On the basis of available evidence, it was not possible to reach a consensus on the ability of baseline GCF MMP-8 to forecast the outcome of NSPT. This could have been due to variation in clinical and laboratory techniques used. However, consistency in mean PPD reduction after 3 months was shown.This study targeted medical workers, who are currently being subjected to an excessive workload and emotional stress during the COVID-19 outbreak. Various treatment programs, such as a relaxation program to relieve stress, a walk in the forest, and woodworking were provided to the participants as forest healing therapies. We enrolled 13 medical workers (11 females, 2 males). Before and after forest healing therapy, stress and sleep-related questionnaires and levels of salivary cortisol, dehydroepiandrosterone sulfate (DHEA-S), and melatonin were measured and compared. The improvement of the perceived stress scale and the decrease of DHEA-S, a stress index, showed statistically significant results. However, although this study was conducted with a small number of participants and has a limitation in that the therapy occurred over a short period of only 1 night and 2 days, the trend of supporting results remains positive. As such, the authors propose forest healing therapy as one intervention to relieve the job stress for this group of workers.
