Planar electroluminescent panel techniques

Investigations of planar electroluminescent multipurpose displays with latch-in memory are described. An 18 x 24 in. flat, thin address panel with elements spacing of 0.100 in. was constructed which demonstrated essentially uniform luminosity of 3-5 foot lamberts for each of its 43200 EL cells. A working model of a 4-bit EL-PC (electroluminescent photoconductive) electrooptical decoder was made which demonstrated the feasibility of this concept. A single-diagram electroluminescent display device with photoconductive-electroluminescent latch-in memory was constructed which demonstrated the conceptual soundness of this principle. Attempts to combine these principles in a single PEL multipurpose display with latch-in memory were unsuccessful and were judged to exceed the state-of-the-art for close-packed (0.10 in. centers) photoconductor-electroluminescent cell assembly

CWRML: representing crop wild relative conservation and use data in XML

Background Crop wild relatives are wild species that are closely related to crops. They are valuable as potential gene donors for crop improvement and may help to ensure food security for the future. However, they are becoming increasingly threatened in the wild and are inadequately conserved, both in situ and ex situ. Information about the conservation status and utilisation potential of crop wild relatives is diverse and dispersed, and no single agreed standard exists for representing such information; yet, this information is vital to ensure these species are effectively conserved and utilised. The European Community-funded project, European Crop Wild Relative Diversity Assessment and Conservation Forum, determined the minimum information requirements for the conservation and utilisation of crop wild relatives and created the Crop Wild Relative Information System, incorporating an eXtensible Markup Language (XML) schema to aid data sharing and exchange. Results Crop Wild Relative Markup Language (CWRML) was developed to represent the data necessary for crop wild relative conservation and ensure that they can be effectively utilised for crop improvement. The schema partitions data into taxon-, site-, and population-specific elements, to allow for integration with other more general conservation biology schemata which may emerge as accepted standards in the future. These elements are composed of sub-elements, which are structured in order to facilitate the use of the schema in a variety of crop wild relative conservation and use contexts. Pre-existing standards for data representation in conservation biology were reviewed and incorporated into the schema as restrictions on element data contents, where appropriate. Conclusion CWRML provides a flexible data communication format for representing in situ and ex situ conservation status of individual taxa as well as their utilisation potential. The development of the schema highlights a number of instances where additional standards-development may be valuable, particularly with regard to the representation of population-specific data and utilisation potential. As crop wild relatives are intrinsically no different to other wild plant species there is potential for the inclusion of CWRML data elements in the emerging standards for representation of biodiversity data

Globalising assessment: an ethnography of literacy assessment, camels and fast food in the Mongolian Gobi

What happens when standardised literacy assessments travel globally? The paper presents an ethnographic account of adult literacy assessment events in rural Mongolia. It examines the dynamics of literacy assessment in terms of the movement and re-contextualisation of test items as they travel globally and are received locally by Mongolian respondents. The analysis of literacy assessment events is informed by Goodwin’s ‘participation framework’ on language as embodied and situated interactive phenomena and by Actor Network Theory. Actor Network Theory (ANT) is applied to examine literacy assessment events as processes of translation shaped by an ‘assemblage’ of human and non-human actors (including the assessment texts)

Ultra-high throughput functional enrichment of large monoamine oxidase (MAO-N) libraries by fluorescence activated cell sorting

Directed evolution enables the improvement and optimisation of enzymes for particular applications and is a valuable tool for biotechnology and synthetic biology. However, studies are often limited in their scope by the inability to screen very large numbers of variants to identify improved enzymes. One class of enzyme for which a universal, operationally simple ultra-high throughput (>106 variants per day) assay is not available is flavin adenine dinucleotide (FAD) dependent oxidases. The current high throughput assay involves a visual, colourimetric, colony-based screen, however this is not suitable for very large libraries and does not enable quantification of the relative fitness of variants. To address this, we describe an optimised method for the sensitive detection of oxidase activity within single Escherichia coli (E. coli) cells, using the monoamine oxidase from Aspergillus niger, MAO-N, as a model system. In contrast to other methods for the screening of oxidase activity in vivo, this method does not require cell surface expression, emulsion formation or the addition of an extracellular peroxidase. Furthermore, we show that fluorescence activated cell sorting (FACS) of large libraries derived from MAO-N under the assay conditions can enrich the library in functional variants at much higher rates than via the colony-based method. We demonstrate its use for directed evolution by identifying a new mutant of MAO-N with improved activity towards a novel secondary amine substrate. This work demonstrates, for the first time, an ultra-high throughput screening methodology widely applicable for the directed evolution of FAD dependent oxidases in E. coli

On the Conflicting Estimations of Pigment Site Energies in Photosynthetic Complexes: A Case Study of the CP47 Complex

Citation: Reinot, T., Chen, J. H., Kell, A., Jassas, M., Robben, K. C., Zazubovich, V., & Jankowiak, R. (2016). On the Conflicting Estimations of Pigment Site Energies in Photosynthetic Complexes: A Case Study of the CP47 Complex. Analytical Chemistry Insights, 11, 35-48. doi:10.4137/aci.s32151We focus on problems with elucidation of site energies (E-0(n)) for photosynthetic complexes (PSCs) in order to raise some genuine concern regarding the conflicting estimations propagating in the literature. As an example, we provide a stern assessment of the site energies extracted from fits to optical spectra of the widely studied CP47 antenna complex of photosystem II from spinach, though many general comments apply to other PSCs as well. Correct values of E-0(n) for chlorophyll (Chl) a in CP47 are essential for understanding its excitonic structure, population dynamics, and excitation energy pathway(s). To demonstrate this, we present a case study where simultaneous fits of multiple spectra (absorption, emission, circular dichroism, and nonresonant hole-burned spectra) show that several sets of parameters can fit the spectra very well. Importantly, we show that variable emission maxima (690-695 nm) and sample-dependent bleaching in nonresonant hole-burning spectra reported in literature could be explained, assuming that many previously studied CP47 samples were a mixture of intact and destabilized proteins. It appears that the destabilized subpopulation of CP47 complexes could feature a weakened hydrogen bond between the 13(1)-keto group of Chl29 and the PsbH protein subunit, though other possibilities cannot be entirely excluded, as discussed in this work. Possible implications of our findings are briefly discussed

Paper and electronic versions of HM-PRO, a novel patient-reported outcome measure for hematology: an equivalence study.

© 2019 Goswami, Oliva, Ionova et al.Aim:To determine measurement equivalence of paper and electronic application of the hematologi-cal malignancy-patient-reported outcome (HM-PRO), a specific measure for the evaluation of patient-reported outcomes in HMs.Patients & methods:Following International Society of Pharmacoeconomicsand Outcomes Research ePRO Good Research Practice Task Force guidelines, a total of 193 adult patientswith different HMs were recruited into a multicenter prospective study. The paper and the electronic ver-sion of the instrument were completed in the outpatient clinics in a randomized crossover design with a30-min time interval to minimize the learning effect. Those who completed the paper version first, com-pleted the electronic version after 30 min and vice versa. Instrument version and order effects were testedon total score of the two parts of the HM-PRO (Part A: quality of life and Part B: signs & symptoms) in atwo-way ANOVA with patients as random effects. Intraclass correlation coefficients (95% CI) and Spear-man’s rank correlation coefficients were used to evaluate test–retest reliability and reproducibility. Theeffects of instrument version and order were tested on total score of the two parts of HM-PRO.Results:The questionnaire version and administration order effects were not significant at the 5% level. Therewere no interactions found between these two factors for HM-PRO (Part A [quality of life]; p=0.95); and(part B [signs and symptoms]; p=0.72]. Spearman’s rank correlation coefficients were greater than 0.9, andintraclass correlation coefficients ranged from 0.94 to 0.98; furthermore, the scores were not statisticallydifferent between the two versions, showing acceptable reliability indexes. Noteworthy, the differencebetween the completion time for both paper (mean=6:38 min) and electronic version (mean=7:29 min)was not statistically significant (n=100; p=0.11). Patients did not report any difficulty in completing theelectronic version during cognitive interviews and were able to understand and respond spontaneously.Conclusion:Measurement equivalence has been demonstrated for the paper and electronic applicationof the HM-PRO.Peer reviewe

Representation of Markov chains by random maps: existence and regularity conditions

We systematically investigate the problem of representing Markov chains by families of random maps, and which regularity of these maps can be achieved depending on the properties of the probability measures. Our key idea is to use techniques from optimal transport to select optimal such maps. Optimal transport theory also tells us how convexity properties of the supports of the measures translate into regularity properties of the maps via Legendre transforms. Thus, from this scheme, we cannot only deduce the representation by measurable random maps, but we can also obtain conditions for the representation by continuous random maps. Finally, we present conditions for the representation of Markov chain by random diffeomorphisms.Comment: 22 pages, several changes from the previous version including extended discussion of many detail

Constructing and manipulating color imagery from digital data

The development of a multispectral scanner data analysis console is reported that incorporates a wideband tape unit, a teletypewriter, a digital computer, and color display as well as numeric display terminals. The device is able to digitize infrared scanner images and displays color differences according to signal differences between analog channels

Developing a multimedia learning resource for allied health professionals: exploring the challenges of prolonged disorders of consciousness

Relevance: Recognising the increasing number of people being sustained with prolonged disorders of consciousness (PDoC), this study introduces new research with allied health professionals (AHPs) that is being used to create a range of digital resources to support AHP undergraduate education and practitioner CPD. Purpose: Previous research (Latchem et al., 2015) identified a mismatch between understandings that families of people with a PDoC hold of AHP interventions and the aims and understandings of AHPs delivering those interventions. This study explores a) how AHPs understand and navigate practical, ethical and legal issues surrounding the care of these patients, b) the learning needs of both qualified and pre-registration AHPs and c) uses the data to create e-learning resources for AHPs and their students. Methods/analysis: This qualitative study uses video-taped interviews with 15 physiotherapists, occupational therapists and speech and language therapists purposively sampled from NHS and independent care providers, and workshops conducted with mixed AHP pre-registration students. The interviews/workshops were transcribed and analysed thematically, adopting a grounded-theory approach to examine experience and learning needs surrounding PDoC care. Emergent themes informed the focus and structure of the e-learning resource. Results: AHPs described how the needs of PDoC patients shifted the focus of, and extended their clinical skills. They reported struggling adjusting to, and finding satisfaction in, their work with this client group who don’t ‘improve’, have a clear rehabilitative nor declining trajectory. Satisfaction however was derived through close multidisciplinary team working. The intertwining of their therapeutic work occurred to such an extent that AHPs resisted defining a distinct disciplinary role and instead discussed their work as entirely interdisciplinary. AHPs repeatedly identified the dilemmas faced by families and discussed the tensions in their own thinking as their clinical objectivity clashed with their own sense of and feelings about the patients’ level of consciousness. They highlighted concerns about the ethics of medical ‘advancements’ and life-sustaining treatments and expressed uneasiness and uncertainty regarding their role in treatment withdrawal situations. Pilot workshops are being developed around these key issues and e-learning resources to support needs for training will be ready for dissemination at conference. Discussion and conclusions: Both families and AHPs can question patients’ level of awareness and the rationale of treatments. However, when families expect ongoing therapeutic input for their relative, or conversely see them as ‘irretrievably gone’, this sits in tension with AHP's clinical reasoning or at times, their relentless striving to capture signs of awareness and for ‘rehabilitation’. Ethical, legal, social and clinical dilemmas collide in the care of PDOC patients, challenging much contemporary clinical practice and pre-registration education. This study and the developing multimedia learning resource demonstrate the interplay between these elements and the scope for CPD support. Impact and implications: The research is developing a new multi-media resource to improve understandings of caring for PDoC patients/their families and related ethical/social/clinical issues. The resource builds on Kitzinger and Kitzinger's successful healthtalk.org module for families and has buy-in from the core AHP Professional Bodies. Our aim is that this AHP-facing resource will have high accessibility, MDT value and impact on personal, practice and curricula development

Enhancing education through community engagement: Perspectives of student volunteers

Background. Engagement between higher education institutions and underprivileged communities holds valuable potential for mutual benefit. In a country of vast inequalities such as South Africa (SA), community engagement also has the potential, via health promotion of local communities, to alleviate some of the burden placed on the public healthcare system, while simultaneously strengthening the personal and professional development of student participants. Objective. To explore the experiences, perceptions and insights of student volunteers (SVs) who assisted with a collaborative health-promotion project. Methods. This qualitative study used thematic analysis of semi-structured interviews to explore the experiences of six SVs in the Faculty of Health Sciences, Durban University of Technology, SA, who assisted in educating local vulnerable women on various aspects of female reproductive health at a wellness day for such women. Results. The SVs described the experience as positive and humbling, enhancing their professional and personal development. They reported that the community engagement helped them to define themselves and to grow skills they will need as future practitioners. The exposure to the challenges faced by vulnerable groups helped them to develop a sense of empathy and compassion, while igniting an eagerness to empower these groups through improved health literacy. Conclusion. The insights provided by this qualitative exploration strongly support the use of community engagement to develop culturally sensitive, empathetic healthcare practitioners