Nanostructured NiS was prepared by inclusion into anodic alumina templates. The resultant particles were found to be stoichiometric and highly crystalline. The particles displayed small particle superparamagnetism, and a low temperature (at 48 K (T(sg))) spin-freezing phenomenon (a spin-glass) and higher temperature (170 K) thermal blocking of small particle magnetic moment fluctuations were both observed for the first time for a sulfide material. Very unusually, these NiS materials are quite distinct from antiferromagnetic nanoparticulate sulfide materials, as they display a high temperature ferromagnetic-like phase. The saturation magnetization, the remanent magnetization, the coercivity and the ferromagnetic mass susceptibility were measured as 0.58 emu g( - 1) (at 100 K), 0.19 emu g( - 1), 219.5 Oe (at 170 K) and ∼ 900 × 10( - 6) emu Oe( - 1) g( - 1) respectively and these are consistent with a moderately strong ferromagnetism. The materials had an unexpectedly high Curie temperature of 390 K. The decrease of the saturation magnetization value at 30 K suggests that the ferromagnetic response is a surface phenomenon and the high coercivity of the paramagnetic component well above T(sg) suggests that the core can be described as superparamagnetic.
Since the establishment of the Olympic Games in 1896, competitive swimming has grown to become one of its largest disciplines. 1 As a result, its competitive level has increased accordingly but this requires the swimmers to prepare differently for major swimming events. Modern swim-training programs are now characterized by year-round swimming with little time for off-season recovery. 2,3 In fact, these training programs seem inherently volume dependent, with elite athletes swimming up to 57.1 km/wk. 4 Swim-training programs primarily aim to induce adaptations to the body that allow the swimmer to perform better in competition 5 but this requires a carefully predetermined combination of training intensity, volume, and rest. 6 However, researchers have suggested that swimmers train too much according to their capabilities 3,4,7 and that they restrain their body from sufficient rest and recovery that is required for optimal adaptation. 8 During their 10-to 15-year careers, swimmers frequently practise up to seven days per week, 3 logging between 10 000 and 14 000 meters. 2 This excessive exposure to swimming has been linked to overtraining 9 and increases the risk of
Background Older adults frequently attend the emergency department (ED) and experience high rates of adverse outcomes following ED presentation including functional decline, ED re-presentation and unplanned hospital admission. The development of effective interventions to prevent such outcomes is a key priority for research and service provision. This paper reports a protocol designed to evaluate the feasibility of conducting a three arm randomised controlled trial (RCT) within the ED setting and in the patient’s home. The interventions are comprehensive geriatric assessment (CGA), ED PLUS and usual care. Methods The ED PLUS pilot trial is designed as a feasibility RCT conducted in the ED and Acute Medical Assessment Unit of a university teaching hospital in the mid-west region of Ireland. We aim to recruit 30 patients, aged 65 years and over presenting to the ED with undifferentiated medical complaints and discharged within 72 h of index visit. Patients will be randomised by a computer in a ratio of 1:1:1 to deliver usual care, CGA or ED PLUS during a 6-month study period. A randomised algorithm is used to perform randomization. CGA will include a medical assessment, medication review, nursing assessment, falls assessment, assessment of mobility and stairs, transfers, personal care, activities of daily living (ADLs), social supports and baseline cognition. ED PLUS, a physiotherapist led, multidisciplinary intervention, aims to bridge the transition of care between the index visit to the ED and the community by initiating a CGA intervention in the ED and implementing a 6-week follow-up self-management programme in the patient’s own home following discharge from the ED. The outcomes will be parameters of the feasibility of the intervention and trial methods and will be assessed quantitatively and qualitatively. Discussion Rising ED visits and an ageing population with chronic health issues render ED interventions to reduce adverse outcomes in older adults a research priority. This feasibility RCT will generate data and experience to inform the conduct and delivery of a definite RCT. Trial registration The trial was registered in Clinical Trials Protocols and Results System as of 21st July 2021, with registration number NCT049836020.
Warm-up protocols have the potential to cause an acute enhancement of dynamic sprinting performance. The purpose of this study was to evaluate the effects of three repetition specific gluteal activation warm-up protocols on acceleration performance in male rugby union players. Forty male academy rugby union players were randomly assigned to one of 4 groups (control, 5, 10 or 15 repetition gluteal activation group) and performed 10 m sprints at baseline and 30 s, 2, 4, 6 and 8 min after their specific intervention protocol. Five and ten meter sprint times were the dependent variable and dual-beam timing gates were used to record all sprint times. Repeated measures analysis of variance found no significant improvement in 5 and 10 m sprint times between baseline and post warm-up scores (p ≥ 0.05) for all groups. There were no reported significant differences between groups at any of the rest interval time points (p ≥ 0.05). However, when individual responses to the warm-up protocols were analyzed, the 15 repetition gluteal activation group had faster 10 m times post-intervention and this improvement was significant (p = 0.021). These results would indicate that there is no specific rest interval for any of the gluteal interventions that results in a potentiation effect on acceleration performance. However, the individual response analysis would seem to indicate that a 15 repetition gluteal activation warm-up protocol has a potentiating effect on acceleration performance provided that the rest interval is adequately and individually determined.
Background A lack of standardisation of documentation accompanying older people when transferring from residential to acute care is common and this may result in gaps in information and in care for older people. In Ireland, this lack of standardisation prompted the development of an evidence based national transfer document. Objectives To pilot a new national transfer document for use when transferring older people from residential to acute care and obtain the perceptions of its use from staff in residential and acute care settings. Methods This was a pre‐ and post‐study design using purposive sampling following the STROBE guidelines. The pilot was conducted in 26 sites providing residential care and three university hospitals providing acute care. Pre‐pilot questionnaires focused on current documentation and were distributed to staff in residential care (n = 875). A pilot of the new paper‐based transfer document was then conducted over three months and post‐pilot questionnaires distributed to staff from both residential and acute care settings (n = 1085). The findings of the pilot study were discussed with multidisciplinary expert advisory and stakeholder groups who recommended some revisions. This consensus informed the development of the final design of the new revised transfer document. Results Pre‐pilot: 23% response rate; 83% (n = 168) participants agreed/strongly agreed that existing documentation was straightforward to complete but could be more person‐centred. Post‐pilot: 11% response rate; 75% (n = 93) of participants agreed/strongly agreed that the new transfer document promoted person‐centred care but recommended revisions to the new document regarding layout and time to complete. Conclusions This study highlighted some of the challenges of providing safe, effective and relevant transfer information that is feasible and usable in everyday practice. Implications for practice Standardisation and being person‐centred are important determining factors in the provision of relevant up to date information on the resident being transferred.
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