Aim: The UNCRPD is an international treaty that promotes the advancement of the rights of persons with disabilities. This scoping review aimed to map the evidence on strategies employed by countries in implementing the UNCRPD in Africa and the implementation challenges faced. Method: The PRISMA extension for scoping reviews (PRISMA-Scr) was used in this study. Key terms pertinent to the implementation of the UNCRPD in Africa were used to search for literature. Strict eligibility criteria were set and a qualitative data extraction template developed. Two reviewers worked independently to extract and chart data into data extraction forms. An analysis of country reports was also conducted to identify relationships between the African country reports and findings from the studies included in the scoping review. Inductive reasoning enabled the generation of themes. A total of 107 sources were initially retrieved and after a process of screening and exclusion, 31 sources (11 research papers and 20 country reports) were included for inductive analysis. Results: The study revealed evidence of implementation of UNCRPD in Africa, albeit limited, especially to the area of education, and employment. However, there are unique contextual limitations in implementation of UNCRPD in Africa. The country reports reflected similar implementation issues to those identified in studies selected for this paper. Conclusion and Implications: This calls for African governments to broaden focus on implementation of other articles of the UNCRPD in order to create inclusive societies.
The underlying mechanism driving the structural amorphous-to-crystalline transition in Group VI chalcogenides is still a matter of debate even in the simplest GeTe system. We exploit the extreme sensitivity of 57Fe emission Mössbauer spectroscopy, following dilute implantation of 57Mn (T½ = 1.5 min) at ISOLDE/CERN, to study the electronic charge distribution in the immediate vicinity of the 57Fe probe substituting Ge (FeGe), and to interrogate the local environment of FeGe over the amorphous-crystalline phase transition in GeTe thin films. Our results show that the local structure of as-sputtered amorphous GeTe is a combination of tetrahedral and defect-octahedral sites. The main effect of the crystallization is the conversion from tetrahedral to defect-free octahedral sites. We discover that only the tetrahedral fraction in amorphous GeTe participates to the change of the FeGe-Te chemical bonds, with a net electronic charge density transfer of ~ 1.6 e/a0 between FeGe and neighboring Te atoms. This charge transfer accounts for a lowering of the covalent character during crystallization. The results are corroborated by theoretical calculations within the framework of density functional theory. The observed atomic-scale chemical-structural changes are directly connected to the macroscopic phase transition and resistivity switch of GeTe thin films. ; This work was supported by the European Union Seventh Framework through ENSAR (Contract No. 262010). R. Fallica, C. Wiemer, and M. Longo acknowledge the SYNAPSE project ("SYnthesis and functionality of chalcogenide NAnostructures for PhaSE change memories"), which received funding from the European Union Seventh Framework Programme (FP7/2007–2013), under grant agreement n° 310339. H. P. Gunnlaugsson acknowledges support from the Fund for Scientific Research-Flanders and the KU Leuven BOF (SF/14/013, CREA/14/13, and STRT/14/002). K. Bharuth-Ram, H. Masenda, D. Naidoo, and M. Ncube acknowledge support from the South African National Research Foundation and the Department of Science and Technology. T. E. Mølholt, H. P. Gislason, and S. Ólafsson acknowledge support from the Icelandic Research Fund (Grant No. 110017021-23). The authors acknowledge Numonyx for the GeTe samples and Dr. Enrico Varesi (now at Micron), Dr. Davide Erbetta (now at STMicroelectronics) and Dr. Roberto Bez (now at LFoundry) for scientific discussion. ; Peer Reviewed
Background: The COVID-19 pandemic has disrupted routine hospital services globally. This study estimated the total number of adult elective operations that would be cancelled worldwide during the 12 weeks of peak disruption due to COVID-19. Methods: A global expert response study was conducted to elicit projections for the proportion of elective surgery that would be cancelled or postponed during the 12 weeks of peak disruption. A Bayesian β-regression model was used to estimate 12-week cancellation rates for 190 countries. Elective surgical case-mix data, stratified by specialty and indication (surgery for cancer versus benign disease), were determined. This case mix was applied to country-level surgical volumes. The 12-week cancellation rates were then applied to these figures to calculate the total number of cancelled operations. Results: The best estimate was that 28 404 603 operations would be cancelled or postponed during the peak 12 weeks of disruption due to COVID-19 (2 367 050 operations per week). Most would be operations for benign disease (90·2 per cent, 25 638 922 of 28 404 603). The overall 12-week cancellation rate would be 72·3 per cent. Globally, 81·7 per cent of operations for benign conditions (25 638 922 of 31 378 062), 37·7 per cent of cancer operations (2 324 070 of 6 162 311) and 25·4 per cent of elective caesarean sections (441 611 of 1 735 483) would be cancelled or postponed. If countries increased their normal surgical volume by 20 per cent after the pandemic, it would take a median of 45 weeks to clear the backlog of operations resulting from COVID-19 disruption. Conclusion: A very large number of operations will be cancelled or postponed owing to disruption caused by COVID-19. Governments should mitigate against this major burden on patients by developing recovery plans and implementing strategies to restore surgical activity safely.