Exploration of phase diagram, structural and dynamic behavior of [HMG][FSI] mixtures with NaFSI across an extended composition range.

Hexamethylguanidinium bis(fluorosulfonyl)imide ([HMG][FSI]) has recently been shown to be a promising solid state organic ionic plastic crystal with potential application in advanced alkali metal batteries. This study provides a detailed exploration of the structural and dynamic behavior of [HMG][FSI] mixtures with the sodium salt NaFSI across the whole composition range from 0 to 100 mol%. All mixtures are solids at room temperature. A combination of differential scanning calorimetry (DSC), synchrotron X-ray diffraction (SXRD) and multinuclear solid state NMR spectroscopy is employed to identify a partial phase diagram. The 25 mol% NaFSI/75 mol% [HMG][FSI] composition presents as the eutectic composition with the eutectic transition temperature at 44 °C. Both DSC and SXRD strongly support the formation of a new compound near 50 mol% NaFSI. Interestingly, the 53 mol% NaFSI [HMG][FSI] composition was consistently found to display features of a pure compound whereas the 50 mol% materials always showed a second phase. Many of the compositions examined showed unusual metastable behaviour. Moreover, the ion dynamics as determined by NMR, indicate that the Na+ and FSI- anions are signifcantly more mobile than the HMG cation in the liquid state (including the metastable state) for these materials.

Perceived Stress Levels among Ukrainian Migrant and LGBT+ Minorities in Poland during the COVID-19 Pandemic.

The Coronavirus disease 2019 (COVID-19) pandemic, immigrant status and being a member of the LGBT+ community are all independent factors associated with increased stress levels. Few studies provide more complex analysis on this issue, and there has been no research on the cumulative burden of perceived stress that people belonging to both minorities experience in the current epidemiological situation. The aim of this study was to assess the ability to deal with an external situation during the third wave of the COVID-19 pandemic in Poland in the following groups with different stress levels (total sample n = 370): Polish heterosexual men (n = 202), heterosexual men from Ukraine (n = 131) and homo- and bisexual men (men who have sex with men-MSM) from Ukraine (n = 37). A Perceived Stress Scale (PSS-10) was used. The analysis of the survey did not show statistically significant differences between the three study groups in the general level of perceived stress (24.71, 24.77 and 26.49 points, respectively, p = 0.551), but it revealed numerous differences in coping with various aspects of everyday functioning between these groups. Negative assessment of one's own health proved to be the main factor negatively affecting the level of perceived stress, however specific health risks, medical history or the participants' previous experience have not been taken into account in the study. Our research shows differences in the needs, resources and methods of coping with stress between men who are Polish citizens and migrants from Ukraine, both heterosexual and belonging to the MSM group. Proper identification and addressing of these needs, taking into account different availability of health services, could be the responsibility of NGOs or insurance providers. This should result in the reduction of mental health burdens and the risk of developing serious mental disorders, and consequently in better functioning of persons belonging to minorities and in a reduced burden on the health care system.

Vaccine misinformation on social media - topic-based content and sentiment analysis of Polish vaccine-deniers' comments on Facebook.

Introduction: Vaccinations are referred to as one of the greatest achievements of modern medicine. However, their effectiveness is also constantly denied by certain groups in society. This results in an ongoing dispute that has been gradually moving online in the last few years due to the development of technology. Our study aimed to utilize social media to identify and analyze vaccine-deniers' arguments against child vaccinations.Method: All public comments posted to a leading Polish vaccination opponents' Facebook page posted between 01/05/2019 and 31/07/2019 were collected and analyzed quantitatively in terms of their content according to the modified method developed by Kata (Kata, 2010). Sentiment analysis was also performed.Results: Out of 18,685 comments analyzed, 4,042 contained content covered by the adopted criteria: conspiracy theories (28.2%), misinformation and unreliable premises (19.9%), content related to the safety and effectiveness of vaccinations (14.0%), noncompliance with civil rights (13.2%), own experience (10.9%), morality, religion, and belief (8.5%), and alternative medicine (5.4%). There were also 1,223 pro-vaccine comments, of which 15.2% were offensive, mocking, or non-substantive. Sentiment analysis showed that comments without any arguments as well as those containing statements about alternative medicine or misinformation were more positive and less angry than comments in other topic categories.Conclusions: The large amount of content in the conspiracy theory and misinformation categories may indicate that authors of such comments may be characterized by a lack of trust in the scientific achievements of medicine. These findings should be adequately addressed in vaccination campaigns.