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The highly contagious nature of SARS-CoV-2 has led to several studies on the transmission of the virus. A little studied potential fomite of great concern in the community is currency, which has been shown to harbor microbial pathogens in several studies. Since the onset of the COVID-19 pandemic, many businesses in the United States have limited the use of banknotes in favor of credit cards. However, SARS-CoV-2 has shown greater stability on plastic in several studies. Herein, the stability of SARS-CoV-2 at room temperature on banknotes, money cards and coins was investigated. In vitro studies with live virus suggested SARS-CoV-2 was highly unstable on banknotes, showing an initial rapid reduction in viable virus and no viral detection by 24 hours. In contrast, SARS-CoV-2 displayed increased stability on money cards with live virus detected after 48 hours. Environmental swabbing of currency and money cards on and near the campus of Brigham Young University supported these results, with no detection of SARS-CoV-2 RNA on banknotes, and a low level on money cards. However, no viable virus was detected on either. These preliminary results suggest that the use of money cards over banknotes in order to slow the spread of this virus may be ill-advised. These findings should be investigated further through larger environmental studies involving more locations.

espanolObjetivo. Los patogenos se pueden transmitir a los billetes debido a los habitos antihigienicos personales. El objetivo del estudio fue buscar los posibles patogenos en los billetes que circulan en el mercado y tambien observar su resistencia antibacteriana asi como sus diversos factores de virulencia utilizando metodos genotipicos y fenotipicos. Material y metodos. Se recogieron al azar un total de 150 muestras de billetes entre agosto de 2017 y marzo de 2018. Se utilizaron los sistemas VITEK para la identificacion y las pruebas de sensibilidad a los antimicrobianos, respectivamente. Los genes de resistencia a los antimicrobianos (mecA, van, betalactamasas de espectro ampliado [BLEA] y carbapenemasas) y los genes de virulencia estafilococica (SE, pvl y tsst -1) se determinaron mediante PCR a tiempo real. Resultados. Se detecto la presencia de cepas de Staphylococcus aureus, Staphylococcus coagulasa negativos (SCN), Enterococcus spp, bacterias gramnegativas, bacterias gramnegativas no fermentativas y Candida spp en un 48%, 54,7%, 56%, 21,3%, 18,7% y 4% de los billetes, respectivamente. Se observo la presencia de S. aureus resistente a meticilina, Enterococcus resistentes a vancomicina y gramnegativos productores de BLEA en un 46,8%, 1,3% y 28,7%, respectivamente. Los genes Pvl, tsst-1 y SE se encontraron en un 2,8/4,9%; 1,4/1,2% y 100/87,8% de las cepas de S. aureus/SCN, respectivamente. El gen sea fue el gen enterotoxigenico mas frecuente. Los genes blaTEM, blaSHV, blaCTX-M-2, blaCTX-M-1, blaKPC, y blaOXA-48 se encontraron 55,8%, 46,5%, 41,2%, 18,6%, 18,6%, y 18,6%, respectivamente en cepas gramnegativas. Conclusion. Estos resultados son muy importantes para resaltar el estado higienico de los billetes. De este modo, los billetes pueden contribuir a la propagacion de patogenos y de la resistencia a los antimicrobianos. Por lo tanto, es posible que debamos comenzar a utilizar productos alternativos a los billetes. EnglishObjetives. Pathogens can be transmitted to banknotes due to the personal unhygienic habits. The aim of study was to find the possible pathogens on the banknotes circulating in the market and also to present their antibacterial resistance and their various virulence factors using genotypic and phenotypic methods. Material and methods. A total of 150 samples of banknotes were randomly collected between August 2017 and March 2018. VITEK systems were used for identification and antimicrobial susceptibility testing respectively. Antimicrobial resistance genes (mecA, van, extended-spectrum β-lactamase [ESBL] and carbapenemases) and staphyloccoccal virulence genes (staphyloccoccal enterotoxins [SEs], pvl, and tsst-1) were determined using with real-time PCR. Results. Staphylococcus aureus, coagulase-negative staphylococci (CoNS), Enterococcus spp., Gram-negative enteric bacteria, non-fermentative Gram-negative bacteria and Candida spp. were detected 48%, 54.7%, 56%, 21.3%, 18.7%, and 4%, respectively. Methicillin-resistant S. aureus, vancomycin-resistant enterococci and ESBL producing Gram-negative were found 46.8%, 1.3%, and 28.7%, respectively. Pvl, tsst-1, and SEs genes were found in a 2.8/4.9%, 1.4/1.2%, and 100/ 87.8% of the S. aureus/CoNS strains, respectively. The sea gene was found the most common enterotoxigenic gene. blaTEM, blaSHV, blaCTX-M-2, blaCTX-M-1, blaKPC, and blaOXA-48 were found 55.8%, 46.5%, 41.2%, 18.6%, 18.6%, and 18.6%, respectively in Gram-negative strains. Conclusion. These results is very important to highlight hygienic status of paper currencies. This can be considered as an indication that banknotes may contribute to the spread of pathogens and antimicrobial resistance. Therefore, we may need to start using alternative products instead of banknotes.

Climate extremes and longer‐term climate change impacts threaten the achievement of development goals (Damania et al., 2017; IBRD, 2018). In 2030, up to 319 million extremely poor people will be living in the 45 countries most exposed to floods, droughts and heat extremes (Shepherd et al., 2013). According to the recent Intergovernmental Panel on Climate Change report on 1.5°C global warming, a 2°C increase in temperature will double 1 the number of people exposed to drought through water stress (IPCC, 2018). To eradicate extreme poverty by 2030, development cooperation and domestic action in the developing world is increasingly concerned with building resilience to these climate hazards (SDG Goal 1.5). Amid lively critical debates, the resilience‐building agenda has sparked a proliferation of projects in recent years. Resilience programmes are being implemented in some of the most climate‐vulnerable, institutionally fragile and unstable settings around the world. Often, they focus on improving people's access to climate and weather information, resources or markets, helping them plan ahead and navigate environmental change and uncertainty in the future. Importantly, resilience‐building is anticipated to give greater agency to vulnerable people and produce more co‐benefits or ‘dividends’ than conventional international development approaches (Rodin, 2014; Tanner et al., 2015a, 2015b; Bond et al., 2017; Cabot Venton, 2018; Cabot Venton et al., 2012). Building resilience from the ground up is critical because of the context‐specific nature of climate change and disaster impacts and the need to ensure the engagement of vulnerable groups. The five‐year, £100m UK Department for International Development (DFID) programme on Building Resilience and Adaptation to Climate Extremes and Disasters (BRACED) is one example of this intervention logic. Alongside the implementation of 15 projects in 13 countries, research and monitoring and evaluation, knowledge‐sharing activities that have taken place under BRACED present a unique opportunity to learn about how poor people and communities deal with climate shocks and other hazards in different contexts, their vulnerabilities and the kinds of interventions that can help strengthen their resilience. Similarly, the Action on Climate Today (ACT) programme funded by DFID for five years to provide technical and financial support to governments across five South Asian countries had a lesson‐learning function to share experiences and knowledge across the programme and with the outside world. This special issue of Disasters reflects on resilience‐building supported via BRACED and ACT in some of the world's most climate‐vulnerable countries and contexts. These programmes have focused on scaling up action to build resilience, 2 principally through the expansion and replication of good practices by influencing government policies, plans and investments. The papers provide insights that are each grounded in different contexts and understandings of local realities and the factors that support and undermine people's resilience. The BRACED articles emphasise the importance of this ground‐level engagement. They also highlight a range of different opportunities for intervening in the broader social structures and decision‐making processes that shape these local realities. The focus of the ACT article is explicitly and exclusively concerned with national and local government policy‐making and how this can be influenced. Each of the seven papers selected for this special issue was written by teams of researchers and practitioners engaged in the BRACED and ACT programmes, based in the Global South and North in a range of country contexts from the Sahel to Southeast Asia. Each brings a different perspective on the significance and operationalisation of efforts to build resilience to climate extremes and disasters. The contributing authors describe resilience‐building at different scales, for different types of projects and interventions: from gender‐differentiated perspectives within households in Ethiopia, Burkina Faso and Chad (Le Masson et al., 2019; McOmber et al., 2019), to devolved community planning and financing in Mali and Senegal (Beauchamp et al., 2019); from sector‐wide agricultural extension support in Sudan (Young and Ismail, 2019), to early warning systems in Ethiopia and Nicaragua (Ewbank et al., 2019), national social protection programmes in Ethiopia (Ulrichs et al., 2019) and advocacy for mainstreaming into government policy in South Asia (Tanner et al., 2019). It is important to understand that the projects of the BRACED and ACT programmes, which inspired the articles in this special issue, did not and could not invest in long‐term studies of the kind that could test the hypotheses of the resilience‐building programmes – that, through these sets of interventions, people's resilience could be enhanced and hence the negative impact of climate extremes and longer‐term climate change be reduced. This was because of the brief implementation time frames of both programmes. This is a common challenge with project‐based interventions, where the assessment of potential impacts needs to be done simultaneously with the investments intended to achieve these impacts. As such, these articles are not based on routine evidence of results produced through monitoring, learning and evaluation activities, but rather are selected expert reflections on the projects. They are intended for scientific peer review and journal publication, not project evaluation. The articles present rich and detailed descriptions and reflections from their respective fields and contexts, which we do not exhaustively or definitively summarise in this overview. Rather, this overview paper aims to gently pique the curiosity of readers, and to reflect briefly on the critical questions that the articles help address, which have hereto remain largely unresolved in resilience debates. We select and draw out insights from this special issue that feed into these debates, and highlight their significance for the wider community of humanitarian and development practitioners. Following a brief overview of how the term ‘resilience’ is being used in each of the articles, we then examine how each has approached the challenge of understanding and measuring bottom‐up interventions. We consider the multiple benefits or resilience dividends that make some of these projects unique, and reflect on what the authors consider are the prospects for effecting deeper structural, or transformative changes.

Following the fast spread of the coronavirus (Covid-19) across Europe and North America in March 2020, many people started stockpiling commodities like toilet paper. Despite the high relevance for public authorities to adequately address stockpiling behavior, empirical studies on the psychological underpinnings of toilet paper stockpiling are still scarce. In this study, we investigated the relation between personality traits, perceived threat of Covid-19, and stockpiling of toilet paper in an online survey (N = 996) across 22 countries. Results suggest that people who felt more threatened by Covid-19 stockpiled more toilet paper. Further, a predisposition towards Emotionality predicted the perceived threat of Covid-19 and affected stockpiling behavior indirectly. Finally, Conscientiousness was related to toilet paper stockpiling, such that individuals higher in Conscientiousness tended to stockpile more toilet paper. These results emphasize the importance of clear communication by public authorities acknowledging anxiety and, at the same time, transmitting a sense of control.

This research aims to evaluate the suitability of cryptocurrency as money from the Islamic perspective. Money, in the Islamic perspective, has specific characteristics and requirements, such as stability and is based on assets. Cryptocurrency may not fulfil this as it has queries as money from the Islamic perspective. The research method applied data of 23 cryptocurrency prices and related information. The result shows that cryptocurrency is hugely volatile and has limits to being called ‘money,’ as it is limited and used for speculation, which is prohibited in Islam. The research implies that Muslims would be reluctant to use cryptocurrency as money, as a currency of transaction. This reason raise an expectation that the cryptocurrency will not develop rapidly in Muslim countries., Cryptocurrency; money; islamic; paper; gold; coin; Financial economics; Financial market; International Finance; Public Finance; Money; Religion; Economics

The present work was focused to design a cheap, rapid, portable and easy to use filter paper based assay for the qualitative and quantitate analysis of acetone. Sodium alginate gel was loaded with the acetone specific optical signal probe, and subsequently coated onto filter paper surface to design portable colorimetric assays for acetone monitoring. The color of the paper sensor strip was observed to change from dark yellow to light yellowish in the presence of varying concentrations of acetone. Three different color analyzing models including RGB, HSV, and LAB were employed to probe the output optical signal, and their performance was compared in terms of better interpretation of the generated signal. The LAB model was found to provide better analytical figures of merit with a linear response for the acetone concentration ranging from 2.5 to 1500 ppm, and a limit of detection of 0.5 ppm. Furthermore, the specificity of the designed filter paper based sensor was demonstrated against different common interfering compounds. The results demonstrated the potential of our proposed filter paper based sensor as a novel tool for the analysis of acetone.

Theoretical and experimental research studies have shown that ecosystems governed by non-transitive competition networks tend to maintain high levels of biodiversity. The theoretical body of work, however, has mainly focused on competition networks in which the outcomes of competition events are predetermined and hence deterministic, and where all species are identical up to their competitive relationships, an assumption that may limit the applicability of theoretical results to real-life situations. In this paper, we aim to probe the robustness of the link between biodiversity and non-transitive competition by introducing a three-dimensional winning probability parameter space, making the outcomes of competition events in a three-species in silico ecosystem uncertain. While two degenerate points in this parameter space have been the subject of previous studies, we investigate the remaining settings, which equip the species with distinct competitive abilities. We find that the impact of this modification depends on the spatial dimension of the system. When the system is well mixed, it collapses to monoculture, as is also the case in the non-transitive deterministic setting. In one dimension, chaotic patterns emerge, which tend to maintain biodiversity, and a power law relates the time that species manage to coexist to the degree of uncertainty regarding competition event outcomes. In two dimensions, the formation of spiral wave patterns ensures that biodiversity is maintained for moderate degrees of uncertainty, while considerable deviations from the non-transitive deterministic setting have strong negative effects on species coexistence. It can hence be concluded that non-transitive competition can still produce coexistence when the assumption of deterministic competition is abandoned. When the system collapses to monoculture, one observes a "survival of the strongest" law, as the species that has the highest probability of defeating its competitors has the best odds to become the sole survivor.