The links between security sector reform and development

Executive summary: This paper explores the relationship between security and development, with a focus on how different types of violence inhibit development in fragile and conflict-affected states. This paper is based upon a comprehensive literature review of separate pieces of research including academic studies, datasets and policy analysis. It explores statistics and figures that illustrate the barriers that insecurity poses to achieving development outcomes in fragile and conflict-afflicted states. It also examines these dynamics in detail in four countries: Afghanistan, Solomon Islands, South Sudan and Timor-Leste. The assignment was not to come up with policy recommendations per se; rather it was to present a comprehensive synopsis of how different types of violence shackles and inhibits development in fragile and conflict-affected states. The research team believes that the material presented will be of use to inform policy debate and development, including in the field of security sector reform. The analysis is contextualised by focusing on three types of violence: political, criminal and interpersonal. The barriers these different types of violence pose to development is presented throughout the report, and embedded in the country case studies. The statistics uncovered in the course of the project are stark and unnerving. These statistics, among others, are used to highlight the barriers that different types of violence pose to development. It is not only the financial cost, but also the broader institutional and social costs that generate a series of barriers for meaningful development. Through synthesising these statistics, this paper contributes to the understandings of the links between security and development, paving way for policy recommendations and lines of action for Australia and development practitioners

Groups with context-free co-word problem

The class of co-context-free groups is studied. A co-context-free group is defined as one whose coword problem (the complement of its word problem) is context-free. This class is larger than the subclass of context-free groups, being closed under the taking of finite direct products, restricted standard wreath products with context-free top groups, and passing to finitely generated subgroups and finite index overgroups. No other examples of co-context-free groups are known. It is proved that the only examples amongst polycyclic groups or the Baumslag–Solitar groups are virtually abelian. This is done by proving that languages with certain purely arithmetical properties cannot be context-free; this result may be of independent interest

Benign mesenteric lipodystrophy presenting as low abdominal pain: a case report

INTRODUCTION: Benign mesenteric lipodystrophy is rare and often presents in a non-specific fashion. Imaging findings may mimic a range of malignant conditions, particularly malignant ovarian disease in women. CASE PRESENTATION: We present the case of a 61-year-old Caucasian woman who was referred to the gynaecology service at our institution and was thought to have ovarian malignancy, and required a laparotomy. However, histopathological analysis unexpectedly revealed benign mesenteric lipodystrophy. CONCLUSION: Benign mesenteric lipodystrophy may mimic a range of conditions, particularly malignancy

The use of ozone to extend the shelf-life and maintain quality of fresh produce

Fresh produce has been recognised as a healthy food, thus there is increasing consumer demand for fresh fruit and vegetables. The shelf-life of fresh produce, however, is relatively short and is limited by microbial contamination or visual, textural and nutritional quality loss. There are many methods to reduce/eliminate microorganisms present in food and ozone treatment is one of them. The use of ozone by the fresh produce industry is a good alternative to chemical treatments, e.g. the use of chlorine. The effectiveness of ozone as an antimicrobial agent has previously been reviewed and has been updated here, with the latest findings. The main focus of this review is on the effects of ozone on the fresh produce quality, defined by maintenance of texture, visual quality, taste and aroma, and nutritional content. Furthermore, ozone has been found to be efficient in reducing pesticide residues from the produce. The treatments that have the ability to reduce microbial contamination of the product without having an adverse effect on its visual, textural and nutritional quality can be recommended and subsequently incorporated into the supply chain. A good understanding of all the benefits and limitations related to the use of ozone is needed, and relevant information has been reviewed in this paper

Challenges in addressing inequity in access to COVID-19 diagnostics, therapeutics and vaccines in Africa.

Significance:Although the global response to COVID-19 has demonstrated that some progress has been made in ensuring timely access to new medical interventions in Africa, much more needs to be done to strengthen the global systems that enable equitable access to health technologies during public health emergencies

Overcoming ecological feedbacks in seagrass restoration

Overcoming ecological feedbacks is a major limiting factor reducing the success of many seagrass restoration projects. Negative feedbacks occur when biotic or abiotic conditions of a site are changed sufficiently after the loss of seagrass to prevent its recovery, even after the original stressors are remediated. While negative feedbacks in seagrass restoration are common, there remain limited studies of ways to reduce them and kick-start the necessary positive feedbacks to promote recovery. We used field and laboratory experiments to investigate key ecological feedbacks in seagrass (Zostera marina) restoration by testing the role of hessian bags and seed burial in reducing seed predation and promoting plant development. We used a double-hurdle model approach to predict “seagrass emergence success” and “seagrass growth success” across planted field plots. We found that planting seeds in hessian bags and burying them in the sediment improved the likelihood of seeds developing into mature plants. We recorded an average 13-fold increase in shoot density for seeds planted in buried bags relative to raked furrows. This could be the combined result of reduced predation as well as bags mimicking emergent traits of mature seagrass to withstand physical impacts. We supplement these findings with laboratory evidence that hessian bags provide protection from predation by green shore crabs. Overall, we found a low and variable success rate for seed-based restoration and indicate other feedbacks in the system beyond those we controlled. However, we show that small methodological changes can help overcome some key feedbacks and improve restoration success

Effects of diamagnetic levitation on bacterial growth in liquid

Diamagnetic levitation is a technique that uses a strong, spatially-varying magnetic field to levitate diamagnetic materials, such as water and biological cells. This technique has the potential to simulate aspects of weightlessness, on the Earth. In common with all ground-based techniques to simulate weightlessness, however, there are effects introduced by diamagnetic levitation that are not present in space. Since there have been few studies that systematically investigate these differences, diamagnetic levitation is not yet being fully exploited. For the first time, we critically assess the effect of diamagnetic levitation on a bacterial culture in liquid. We used a superconducting magnet to levitate growing bacterial cultures for up to 18 hours, in a series of experiments to determine the effect of diamagnetic levitation on all phases of the bacterial growth cycle. We find that diamagnetic levitation increases the rate of population growth in a liquid culture. The speed of sedimentation of the bacterial cells to the bottom of the container is considerably reduced. Further experiments and microarray gene analysis show that the growth enhancement is due to greater oxygen availability in the magnetically levitated sample. We demonstrate that the magnetic field that levitates the cells also induces convective stirring in the liquid, an effect not present in microgravity. We present a simple theoretical model, showing how the paramagnetic force on dissolved oxygen can cause the liquid to become unstable to convection when the consumption of oxygen by the bacteria generates an oxygen concentration gradient. We propose that this convection enhances oxygen availability by transporting oxygen around the sample. Since convection is absent in space, these results are of significant importance and timeliness to researchers considering using diamagnetic levitation to explore weightless effects on living organisms and a broad range of other topics in the physical and life sciences