Biodiversity of nematode assemblages from the region of the Clarion-Clipperton Fracture Zone, an area of commercial mining interest

BACKGROUND: The possibility for commercial mining of deep-sea manganese nodules is currently under exploration in the abyssal Clarion-Clipperton Fracture Zone. Nematodes have potential for biomonitoring of the impact of commercial activity but the natural biodiversity is unknown. We investigate the feasibility of nematodes as biomonitoring organisms and give information about their natural biodiversity. RESULTS: The taxonomic composition (at family to genus level) of the nematode fauna in the abyssal Pacific is similar, but not identical to, the North Atlantic. Given the immature state of marine nematode taxonomy, it is not possible to comment on the commonality or otherwise of species between oceans. The between basin differences do not appear to be directly linked to current ecological factors. The abyssal Pacific region (including the Fracture Zone) could be divided into two biodiversity subregions that conform to variations in the linked factors of flux to the benthos and of sedimentary characteristics. Richer biodiversity is associated with areas of known phytodetritus input and higher organic-carbon flux. Despite high reported sample diversity, estimated regional diversity is less than 400 species. CONCLUSION: The estimated regional diversity of the CCFZ is a tractable figure for biomonitoring of commercial activities in this region using marine nematodes, despite the immature taxonomy (i.e. most marine species have not been described) of the group. However, nematode ecology is in dire need of further study

Understanding cooking behaviours to design energy saving interventions

People's behaviours play an important role in energy consumption, especially whilst dealing with high consumption, highly interactive appliances such as cookers. In a user observation study conducted among university students, participants were asked to perform a simple cooking task. Their behaviours were analysed and compared with a set of recommended practices. The electricity usage and time to complete the activity were also measured. The results show that participants performed in several different ways, presenting diverse energy usage. The determinants of these behaviours were also collected, and will help to inform the design of interventions to motivate people to change their behaviours whilst cooking

Cooking behaviours: a user observation study to understand energy use and motivate savings

Electric cookers are one of the highest energy consuming domestic appliances, and there are several aspects that can influence the amount of energy used when preparing a meal. Appliance characteristics are shown to influence consumption, but human factors play an important role in the overall electricity usage. A user observation study was conducted among uni-versity students to understand how they use electric cookers. They were asked to perform a specific cooking task, and the elec-tricity usage was measured. Participants’ behaviours were analysed and compared with a set of energy saving techniques. Ap-pliance characteristics that influenced how students use energy were also investigated. The results show that users performed the task in several different ways, presenting diverse energy consumption, the average being 3 times above the necessary to complete the task. This information is now informing the design of interventions to motivate people to change their behaviours whilst cooking

Cooking behaviours: understanding energy use to design persuasive applications

Electric cookers and kettles are often high electricity consumers amongst household appliances. Cooking requires several interactions with these appliances, and furthermore people’s behaviours play an important role in the energy consumption. This research is seeking to understand people’s behaviours whilst cooking and also identify the determinants of these behaviours. Energy monitoring, video recording and semi-structured questionnaires were used to gather this information. This knowledge will inform the development of an intervention aiming at reducing energy expenditure

Using social network games to reduce energy consumption

This research is investigating the potential role of online social network based life simulation computer games as a persuasive tool for encouraging users to reduce their domestic energy consumption. Games such as ‘Farmville’ which runs on the Facebook platform have attracted millions of users worldwide who create simple virtual worlds where they interact with others and carry out everyday activities to earn tokens to spend within the game. Applying a User Centred Design (UCD) and in particular persona based design approach, this research is investigating why users find these games so enticing, the characteristics of those who play them, and the context in which they are played. Through an iterative UCD process, a life simulation game will be designed with users who represent a number of key ‘gamer personas’ in order to research how this sort of game could be used to encourage domestic energy saving behaviours

Frame-Independence of Exclusive Amplitudes in the Light-Front Quantization

While the particle-number-conserving convolution formalism established in the Drell-Yan-West reference frame is frequently used to compute exclusive amplitudes in the light-front quantization, this formalism is limited to only those frames where the light-front helicities are not changed and the good (plus) component of the current remains unmixed. For an explicit demonstration of such criteria, we present the relations between the current matrix elements in the two typical reference frames used for calculations of the exclusive amplitudes, i.e. the Drell-Yan-West and Breit frames and investigate both pseudoscalar and vector electromagnetic currents in detail. We find that the light-front helicities are unchanged and the good component of the current does not mix with the other components of the current under the transformation between these two frames. Thus, the pseudoscalar and vector form factors obtained by the diagonal convolution formalism in both frames must indeed be identical. However, such coincidence between the Drell-Yan-West and Breit frames does not hold in general. We give an explicit example in which the light-front helicities are changed and the plus component of the current is mixed with other components under the change of reference frame. In such a case, the relationship between the frames should be carefully analyzed before the established convolution formalism in the Drell-Yan-West frame is used.Comment: 14 pages, 4 figure

Understanding patient views and experiences of the IDENTIfication of PALLiative care needs (IDENTI-Pall) : a qualitative interview study protocol

Introduction: More people are living with multimorbidity, defined as two or more long-term physical or mental health conditions. Multimorbidity is associated with poor quality of life and high treatment burden. Palliative care identification tools have been developed for use in primary care to seek out patients who could benefit from a palliative approach to their care. There has been little evaluative research on such tools; patient perspectives on the process of identifying their palliative care needs is a significant gap. The aim of this research is to provide new understanding into patient perspectives of the experience of having their palliative care needs identified, and the impact on their healthcare. Methods and analysis: This qualitative study will employ semistructured interviews to elicit the views of participants. We will purposively sample 10–12 adults with advanced serious illness who have been identified by their primary care team as having palliative care needs, and/or are receiving care from specialist palliative care services. A family member or carer may be included in an interview at the participant’s request. A descriptive, thematic analysis will be carried out using the data analysis software NVivo. Ethics and dissemination: Ethical approval has been granted by the North of Scotland Research Ethics Committee. Study findings will be disseminated in peer-reviewed journals and through conference presentations. Other activities include the development of patient-centred outcomes for clinical practice and policy in relation to the use of palliative care identification tools. Trial registration number: National Institute for Health Research (NIHR) Clinical Studies Portfolio, UK Clinical Research Network (UKCRN) Study number 51296