A portfolio of powertrains for the UK: An energy systems analysis

AbstractThere has recently been a concerted effort to commence a transition to fuel cell vehicles (FCVs) in Europe. A coalition of companies released an influential McKinsey-coordinated report in 2010, which concluded that FCVs are ready for commercial deployment. Public–private H2Mobility programmes have subsequently been established across Europe to develop business cases for the introduction of FCVs. In this paper, we examine the conclusions of these studies from an energy systems perspective, using the UK as a case study. Other UK energy system studies have identified only a minor role for FCVs, after 2030, but we reconcile these views by showing that the differences are primarily driven by different data assumptions rather than methodological differences. Some energy system models do not start a transition to FCVs until around 2040 as they do not account for the time normally taken for the diffusion of new powertrains. We show that applying dynamic growth constraints to the UK MARKAL energy system model more realistically represents insights from innovation theory. We conclude that the optimum deployment of FCVs, from an energy systems perspective, is broadly in line with the roadmap developed by UK H2Mobility and that a transition needs to commence soon if FCVs are to become widespread by 2050

Characterising the Evolution of Energy System Models Using Model Archaeology

In common with other types of complex models, energy system models have opaque structures, making it difficult to understand both changes between model versions and the extent of changes described in research papers. In this paper, we develop the principle of model archaeology as a formal method to quantitatively examine the balance and evolution of energy system models, through the ex post analysis of both model inputs and outputs using a series of metrics. These metrics help us to understand how models are developed and used and are a powerful tool for effectively targeting future model improvements. The usefulness of model archaeology is demonstrated in a case study examining the UK MARKAL model. We show how model development has been influenced by the interests of the UK government and the research projects funding model development. Despite these influences, there is clear evidence of a strategy to balance model complexity and accuracy when changes are made. We identify some important long-term trends including higher technology capital costs in subsequent model versions. Finally, we discuss how model archaeology can improve the transparency of research model studies. © 2014 The Author(s)

Review of the Scottish TIMES energy system model

The Scottish TIMES model has provided influential evidence to inform Scottish Government climate policy in recent years. This report presents the findings of a technical review of the Scottish TIMES model. This comprised a review of the model inputs and a number of diagnostic tests based on running the model with a test scenario. The review identified a number of issues that should be investigated further and some minor model data issues to explore. The review concluded that that Scottish TIMES is a solid and well-designed model which is suitable for informing Scottish climate policy if used appropriately. The review suggested some areas where the model could be further developed and these include improving greenhouse gas emissions accounting and producing output data analyses that stakeholders could draw on

Preventing disease and saving resources:the potential contribution of increasing breastfeeding rates in the UK

Two challenges stand out as we contemplate the future of health services in the United Kingdom. The first is the state of the public finances and therefore the pressure in real terms on health services funding. The second is the recurring and vexing problem of health inequalities. The state of health inequalities in Britain has been commented on by many, but we have seen precious little real change in the disproportionate burden of early death and illness among the most disadvantaged and indeed across the whole health gradient in recent years.This work was funded by UNICEF UK

Morality or competence? The importance of affirming the appropriate dimension of self-integrity

Objectives: Two studies explored the relative efficacy of a morality-based versus a competence-based self-affirmation manipulation at increasing acceptance of personally relevant health-risk information. In accordance with prior theorising (e.g., Cohen & Sherman, 2014), it was hypothesized that the morality affirmation would be more effective than the competence affirmation in such contexts, as the former targets a different domain to that threatened by the health-risk information. Design: Both studies employed a cross-sectional experimental design. Methods: Participants were presented with a morality affirmation, competence affirmation or no affirmation control prior to reading a message about the risks of (a) not engaging in daily dental flossing (Study 1) and (b) red meat consumption (Study 2). Participants subsequently completed a number of measures assessing acceptance of the message. Results: In line with predictions, findings from both studies demonstrated that the morality affirmation precipitated greater acceptance of personally relevant health-risk information compared to the competence affirmation, as reflected in more positive attitudes (Studies 1 and 2) and intentions (Study 1). Study 2’s findings further suggested that the superior efficacy of the morality affirmation in health-related contexts could not simply be attributed to a general tendency for this affirmation to outperform the competence affirmation. Conclusions: The nature of the value affirmed may be a critical factor in determining the success of self-affirmation manipulations in health-related domains

DNA extraction from formalin-fixed tissue: new light from the Deep-Sea

DNA samples were extracted from ethanol and formalin-fixed decapod crustacean tissue using a new method based on Tetramethylsilane (TMS)-Chelex. It is shown that neither an indigestible matrix of cross-linked protein nor soluble PCR inhibitors impede PCR success when dealing with formalin-fixed material. Instead, amplification success from formalin-fixed tissue appears to depend on the presence of unmodified DNA in the extracted sample. A staining method that facilitates the targeting of samples with a high content of unmodified DNA is provided

In situ characterization of mixing and sedimentation dynamics in an impinging jet ballast tank via acoustic backscatter

Impinging jets are utilized in numerous applications, including nuclear waste treatment, for both the erosion of sediment beds and maintaining particulates in suspension. Pulse-echo ultrasonic methods offer great potential for the in situ monitoring of critical mixing and settling dynamics, in concentrated dispersions. A non-active scaled version of a Highly Active Storage Tank at Sellafield, UK, was profiled with an acoustic backscatter system under various jet firing conditions. An advanced analysis technique enabled the direct quantification of dispersion concentration changes from the converted backscatter attenuation. Hence, the erosion and mixing capability of the jets, and settling kinetics were characterized. It was found that jet operation alone provided inadequate localized mixing of eroded sediment. An additional air-lift process operation was required to hinder the rapid re-settling of dispersed particulates