A Fast and Sustainable Route to Bassanite Nanocrystals from Gypsum

Calcium sulfate is an important construction material. More than 1600 million square meters of interior surfaces are covered with plasterboards in Europe each year. Plasterboard is manufactured by transforming mined or recycled gypsum (CaSO4 × 2 H2O) to bassanite (CaSO4 × ½H2O) in a time- and energy-consuming heating process. A fast and sustainable way to produce bassanite by solvent-assisted milling, thereby eliminating the need for energy-intensive dehydration, is described. The milling reaction is complete after ≈200 min. Kinetic studies revealed that gypsum crystals transform to bassanite by shear forces during milling. 1H nuclear magnetic resonance (NMR) spectroscopic techniques and Fourier-transform infrared spectroscopy (FT-IR) show that the resulting bassanite nanocrystals are stabilized by surface functionalization with the auxiliary solvent methanol. Bassanite particles produced over extended milling times of 990 min form long-term stable dispersions without stabilizers and no signs of precipitation. Addition of water to bassanite leads to instant agglomeration, followed by a phase change to gypsum. The dispersibility in volatile methanol and the elucidation of the crystallization mechanism allow also for applications of the bassanite nanocrystals in hybrid materials. © 2022 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH

Lost in fragmentation - care coordination when somatic symptoms persist: a qualitative study of patients' experiences

BACKGROUND: GPs can play a central role in the care of patients with persistent somatic symptoms (PSS). To date, little is known about these patients' experiences relating to their coordination of care. AIM: To explore the experiences of patients with PSS relating to coordination of care - in particular by their GP - during their illness trajectory. DESIGN AND SETTING: This qualitative study was carried out from January to April 2019 in the Netherlands as part of a multicentre prospective cohort study on the course of PSS (PROSPECTS). METHOD: Thematic content analysis of 15 interviews. RESULTS: Three themes were identified: care fragmentation during the diagnostic trajectory; transition from the search for a cure to coping; and reframing to coping: GPs' role in facilitating supportive care. Patients experienced a lack of collaboration from healthcare workers during the diagnostic trajectory. Guidance by their GP in a process of shared decision making was positively valued by patients. Moving the focus from searching for a cure to coping with symptoms was described as a 'personal endeavour', made even more challenging by the ongoing uncertainty experienced by patients. When reframing to coping, the extent to which patients felt aligned with their GP played an important role in whether their supportive care request was met. CONCLUSION: Patients experienced difficulties when navigating the diagnostic trajectory and shifting to coping. The findings of this study underline the importance of collaboration between GPs and other healthcare professionals during the diagnostic trajectory. The authors recommend that GPs provide proactive guidance and are sensitive to patients who shift to coping by providing them with supportive care in a process of shared decision making

Patients' experiences with fluctuations in persistent physical symptoms:a qualitative study

Objectives To explore patients' experiences with fluctuations in persistent physical symptoms (PPS) and to understand which factors - from their viewpoint - play a role in these fluctuations. Design Qualitative study using semistructured interviews and thematic content analysis. Setting This qualitative study is part of a multicentre prospective cohort study on the course of PPS. Patients were recruited in general practices and specialised treatment facilities for PPS throughout the Netherlands. Participants Interviews were conducted with a sample of fifteen patients with PPS to explore their experiences with fluctuations in symptom severity. Results We identified three themes in the analysis: (1) patterns in symptom fluctuations (2) perceived causes of symptom exacerbations and (3) Patients' strategies in gaining control over symptom exacerbations. Daily and weekly fluctuations in symptoms were an important element in patients' experiences. In particular anticipating on the worsening of symptoms impacted their daily routines and posed various challenges. Symptom exacerbations were attributed to overstepping physical limits and/or the impact of negative emotions. Resigning to physical limits, adjusting ones daily planning, weighing personal needs and learning to say € no' were described as different strategies in gaining control over symptom exacerbations. Conclusions Fluctuations in the severity of symptoms - and in particular daily and weekly symptom exacerbations - are an important element of the symptom experience in patients with PPS and poses various challenges. Patients attributed symptom exacerbation to overstepping physical limits and/or negative emotions. Patients described different strategies in gaining control over symptom exacerbations