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Instead of using expensive highly performing conventional pyramidal absorbers, in some cases, the use of absorbers based on very cheap eco‐friendly materials is an attractive alternative. The authors introduce a novel technique to improve the absorption bandwidth of these intrinsically low‐quality absorbers by adding a Salisbury screen at the base of the pyramidal absorber, which adds two extra design parameters. The first is the resistive sheet surface impedance, and the second is the resonance frequency of the Salisbury screen. By tuning these two parameters, better impedance matching can be obtained. This is verified with the help of a transmission line model, full‐wave simulations, and measurements. The method is applied to two different lower‐quality absorbers found in the literature. In the first absorber, the operating bandwidth is increased at the lower frequency side by 40%, and in the second one, this is about 90%. Finally, a prototype of an eco‐friendly combined absorber is designed and fabricated. The measurement validates the expected behaviour. [ABSTRACT FROM AUTHOR]

Rising concerns about greenhouse gas emissions from fossil fuels have made it important to pay attention to renewable energy sources. In this regard, using wind turbines to use the potential of wind energy as a source of clean energy is being developed. This study developed a numerical model of a horizontal axis wind turbine in MATLAB software. A multicriteria analysis based on energy, exergy, economic, and environmental analysis has been performed to policy‐making and evaluate the potential of wind energy systems. Six cities of Buenos Aires, Harare, Madrid, Melbourne, Shiraz, and Washington have also been analyzed as a case study to examine the impact of different climates on the result of these criteria. According to energy analysis, Melbourne is the best choice with Temperate Oceanic Climates and average energy efficiency of 17.1%. From an exergy point of view, Harare, which has Oceanic Subtropical Highland Climates, is the best choice, with an average exergy efficiency of 11.6%. In terms of the Levelized cost of energy, Melbourne is also known as the most economical city, with an energy cost of $0.14 per kWh. Also, based on the environmental aspect of the analysis, which represents the carbon footprint, Shiraz, with the Cold–Summer Mediterranean Climate and the lowest carbon emission per year, is the most optimal option. [ABSTRACT FROM AUTHOR]

An analysis of individual and neighbourhood characteristics shaping place attachment in Harare's selected informal settlements This study, therefore, presents new insights on place attachment in informal settlements, challenging the dominant narratives that perceive these neighbourhoods as being characterized by low place attachment. Multivariate analysis of individual and neighbourhood determinants of place attachment Multivariate ordered logistic regression analysis was done to account for possible confounding factors on place attachment. Predictors of place attachment and study hypotheses based on empirical literature Most studies focus on the influence of personal or neighbourhood characteristics on place attachment (Sharp 2018). [Extracted from the article]

Introduction: In sub‐Saharan Africa, less than half of young people know their HIV status. HIV self‐testing (HIVST) is a testing strategy with the potential to offer privacy and autonomy. We aimed to understand the uptake and acceptability of different HIV testing options for youth in Harare, Zimbabwe. Methods: This study was nested within a cluster randomized trial of a youth‐friendly community‐based integrated HIV and sexual and reproductive health intervention for youth aged 16–24 years. Three HIV testing options were offered: (1) provider‐delivered testing; (2) HIVST on site in a private booth without a provider present; and (3) provision of a test kit to test off site. Descriptive statistics and proportions were used to investigate the uptake of HIV testing in a client sample. A focus group discussion (FGD) with intervention providers alongside in‐depth interviews, paired interviews and FGDs with a selected sample of youth clients explored uptake and acceptability of the different HIV testing strategies. Thematic analysis was used to analyse the qualitative data. Results: Between April and June 2019, 951 eligible clients were tested for HIV: 898 (94.4%) chose option 1, 30 (3.25%) chose option 2 and 23 (2.4%) chose option 3. Option 1 clients cited their trust in the service and a desire for immediate counselling, support and guidance from trusted providers as the reasons for their choice. Young people were not confident in their expertise to conduct HIVST. Concerns about limited privacy, confidentiality and lack of support in the event of an HIV‐positive result were barriers for off‐site HIVST. Conclusions: In the context of supportive, trusted and youth‐friendly providers, youth clients overwhelmingly preferred provider‐delivered HIV testing over client‐initiated HIVST or HIVST off site. This highlights the importance of listening to youth to improve engagement in testing. While young people want autonomy in choosing when, where and how to test, they do not want to necessarily test on their own. They desire quality in‐person counselling, guidance and support, alongside privacy and confidentiality. To increase the appeal of HIVST for youth, greater provision of access to private spaces is required, and accessible pre‐ and post‐test counselling and support may improve uptake. [ABSTRACT FROM AUTHOR]

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Cites the appearance of Turnip mosaic virus (TuMV) in crop and wild hosts in the Zimbabwe's Harare region within 1-2 kilometer of a reported outbreak. Symptoms observed on approximately 90% of cabbage plants growing in a field in Harare; Indication that sap samples from certain hosts tested positive in protein A sandwich-enzyme linked immunosorbent assay.