Direct extraction of oil from sunflower seeds by twin-screw extruder according to an aqueous extraction process: Feasibility study and influence of operating conditions

The objective of this study was to evaluate the feasibility of an aqueous process to extract sunflower seed oil using a co-rotating twin-screw extruder. Aqueous extraction was carried out using whole seeds and the influence of the operating conditions on oil yield was examined. Operating conditions included screw profile, screw rotation speed, and input flow rates of sunflower seeds and water. Liquid/solid separation required the addition of a lignocellulosic residue upstream from the filtration zone. However, even with maximum fiber input flow, drying of the cake meal did not improve. The lixiviation of the sunflower seeds was also incomplete. The aqueous extraction of the oil was more efficient in the twin-screw extruder than the reference trial conducted in a batch reactor. The best oil extraction yield obtained was approximately 55% and the residual oil content of the cake meal was approximately 30%. The hydrophobic phases produced were oil-in-water emulsions. These emulsions were stabilized by phospholipids and proteins at the interface, which are natural surface-active agents co-extracted during the process

The nature and use of Ocean Literacy in achieving sustainable ocean futures: A Systematic Map

Ocean Literacy (OL) is essential for changing human behaviours and practices to improve ocean sustainability. Recently, the concept has become a focal topic in ocean and coastal research, including as a key pillar of the United Nations Decade of Ocean Science for Sustainable Development. As the concept and practice of OL continues to evolve, it is timely to synthesise the existing evidence base to ensure that future research, practice and policy is informed by robust and up-to-date evidence. To this end, we undertook a Systematic Map addressing the following research questions: (i) where has OL work been undertaken, (ii) which OL dimensions have been discussed and measured, (iii) what methods have been used to measure OL, (iv) what populations have been studied in OL research, (v) what is the rationale or purpose of OL research and (vi) what are the recommendations for future OL research and practice? The review included 298 articles, 181 from peer-reviewed literature and 117 from grey literature. Results show a growing body of literature on OL research and practice, but also highlight several evidence gaps. Most research identified has been published by first authors from the USA, Canada, UK, Ireland and Portugal, accounting for over 50% of articles included in the Systematic Map. Evidence suggested that primary data studies have measured all 10 currently recognised dimensions of OL, albeit to varying degrees. However, assessing knowledge remains the predominant focus, indicating that the field still relies on the knowledge-deficit approach to OL. To date, studies have measured OL in 25 different target populations; however, over 50% focused on OL in students and teachers. Most of the studies employ quantitative approaches, particularly surveys, to collect OL data with limited use of other methods. We identified that OL research is driven by four core rationales or purposes: (i) defining and conceptualising OL, (ii) educational design and programming, (iii) evaluating OL, and (iv) increasing OL (tools and improvements). We also captured future priorities and recommendations for OL research and practice, including evaluation of OL initiatives and projects, diversity, equity and inclusion and partnerships and collaboration. The Systematic Map brings coherence to the existing OL evidence base, identifies gaps, and provides a way forward for OL research and practice and its implications for ocean and coastal management

A two way process – Social capacity as a driver and outcome of equitable marine spatial planning

Although stakeholder engagement is one of the founding principles of marine spatial planning (MSP), meaningful representation of people and their connections to marine resources within marine governance is still lacking. A broad understanding of how concepts surrounding social capital and capacity is translated into MSP practice is missing. With this article, we describe detailed case studies in the United Kingdom, Brazil and South Africa to build a better understanding of the ways in which MSP and other ocean governance initiatives operationalise the concepts of social capital and capacity. Drawing on insights from the cases, we call for a rethinking of capacitation as a two-way process. In particular, trust-building, social learning and efforts to build social capacity should be elaborated without imposing a hierarchy between people ‘who know’ and people ‘who don’t’. Innovative approaches to relationship building, knowledge development, and collaboration highlighted in the case studies highlight ways to build social capacity both among stakeholders and planners, as is necessary for more equitable and sustainable MSP development and implementation

A Note on the Contingent Necessity of a Morphogenic Society and Human Flourishing

The Centre for Social Ontology working group project has been exploring the concept of a Morphogenic Society since 2013. The project is now drawing to a close. One of the arising issues from the project has been whether such a society can be and is liable to be one of human flourishing. In this short paper, I explore one possible aspect of the concept of a Morphogenic Society.1 A Morphogenic Society may involve issues of ‘contingent necessity’. Contingent necessity may provide one way to think about human flourishing, and this in turn may highlight the potential significance of the concept of a Morphogenic Society as a resource in positional argument for human flourishing

Innovative Business Approaches for the Reduction of Extreme Poverty and Marginality?

Extreme poverty is an immense political and market failure, wasting the potential of hundreds of millions of people. Investing in the creation of markets that include the extreme poor and marginalized should thus not only be considered as a charitable activity, but promises high returns on investments - in financial and humanitarian terms. However, while the potential of innovative business approaches to target the poor that live close to the poverty line is increasingly being recognised, the question remains how far these approaches can push the margin to also include those that are extremely poor. And how can those that are marginalized from development opportunities be brought into and benefit from market-based systems to improve the quality of their lives? The impressive rise of business approaches to combating poverty stems from a long history of debates on the role of businesses in society. From an initial focus on social objectives as an external add-on, leading business thinkers have increasingly been stressing the benefits for companies of integrating social considerations into their core business strategies, for instance by targeting lowincome consumers (or 'bottom of the pyramid' markets) or strengthening supply and distribution chains through the involvement of local communities as part of inclusive business strategies. Others - most notably Muhammed Yunus along with other social entrepreneurs - are taking this argument one step further, advocating the use of business strategies primarily to address social goals rather than for financial gains. Thus, in discussions on the role of business in society, profit maximisation as the primary objective of business operations is increasingly making way for business initiatives that are guided by social objectives. This trend is also being supported by growing interest among investors in financing enterprises that promote social or environmental objectives, either as their primary aim or in parallel with seeking to generate financial returns. How suitable these different approaches are to engage the poorest and marginalized depends in part on the extent to which they are able to involve the extreme poor themselves, their flexibility to direct business objectives towards the reduction of extreme poverty and marginality, and their ability to successfully operate with non-business public and civil society partners and in sectors of particular interest to the extreme poor. Further research and action is needed to identify outcome-focused indicators and measurement tools for social value creation, examine possible government measures to support business activities for the poorest, and consider complementarities between the different business approaches. While we recognise that it is unrealistic to expect businesses to be able to reach all of the extreme poor, we believe that the boundaries of innovative business operations can be pushed much further to include a far larger number of the poorest and marginalized

Who Said or What Said? Estimating Ideological Bias in Views Among Economists

There exists a long-standing debate about the influence of ideology in economics. Surprisingly, however, there is no concrete empirical evidence to examine this critical issue. Using an online randomized controlled experiment involving economists in 19 countries, we examine the effect of ideological bias on views among economists. Participants were asked to evaluate statements from prominent economists on different topics, while source attribution for each statement was randomized without participants’ knowledge. For each statement, participants either received a mainstream source, an ideologically different less-/non-mainstream source, or no source. We find that changing source attributions from mainstream to less-/non-mainstream, or removing them, significantly reduces economists’ reported agreement with statements. Using a model of Bayesian updating we examine two competing hypotheses as potential explanations for these results: unbiased Bayesian updating versus ideologically-biased Bayesian updating. While we find no evidence in support of unbiased updating, our results are consistent with biased Bayesian updating. More specifically, we find that changing/removing sources (1) has no impact on economists’ reported confidence with their evaluations; (2) similarly affects experts/non-experts in relevant areas; and (3) affects those at the far right of the political spectrum much more significantly than those at the far left. Finally, we find significant heterogeneity in our results by gender, country, PhD completion country, research area, and undergraduate major, with patterns consistent with the existence of ideological bias

Assumption without representation: the unacknowledged abstraction from communities and social goods

We have not clearly acknowledged the abstraction from unpriceable “social goods” (derived from communities) which, different from private and public goods, simply disappear if it is attempted to market them. Separability from markets and economics has not been argued, much less established. Acknowledging communities would reinforce rather than undermine them, and thus facilitate the production of social goods. But it would also help economics by facilitating our understanding of – and response to – financial crises as well as environmental destruction and many social problems, and by reducing the alienation from economics often felt by students and the public

Board characteristics and credit-union performance

We examine the role of board characteristics on the performance of Australian credit unions during the period 2004–2012. Credit unions are unique as they are member-owned institutions, and their directors are democratically elected by their members – an unusual governance structure that poses challenges for board effectiveness. We find that board remuneration, board expertise and attendance at meetings are associated with increased credit-union performance and are consistent with the goal of maximising member benefits. While the unique features of credit unions limit the presence of external monitoring mechanisms, we provide evidence that these board characteristics are relevant for credit unions