67 results on '"Emma White"'
Search Results
2. A novel consensus bacterial 6-phytase variant improves the responses of laying hens fed an inorganic phosphorus-free diet with reduced energy and nutrients from 23 to 72 wk of age
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Thaila F. Moura, Matheus P. Reis, Freddy A. Horna, Ingryd Palloma T. Nóbrega, Abiodun Bello, Daniella C.Z. Donato, Emma White, Yueming Desjant-Li, and Nilva K. Sakomura
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egg production ,available phosphorus ,phytic acid ,egg quality ,phytate ,Animal culture ,SF1-1100 - Abstract
ABSTRACT: The objective of this study was to evaluate the effect of a novel consensus bacterial 6-phytase variant (PhyG) on egg productivity, eggshell quality, and body composition of laying hens fed inorganic phosphate-free diets with reduced energy and nutrients from 23 to 72 wk of age. Five treatments were randomly assigned, performing 28 replicates per treatment with 4 hens each, totaling 560 Hy-Line W80 birds. A positive control (PC) feed was formulated to contain adequate levels of energy and nutrients. A negative control (NC) feed was formulated without added inorganic phosphate (0.12% nonphytic phosphorus [nPP]) and reduced in Ca, Na, dig AA, and metabolizable energy in comparison with PC feed. Phytase was supplemented in the NC feed at 0, 300, 600, and 900 FTU/kg of feed. The responses evaluated were performance, egg quality, economic analysis, body composition, and tibia composition. Data were analyzed by a 2-factor (diet and age) repeated measure analysis. Overall, the feed intake, hen-day egg production, egg mass, and egg revenue were reduced by the complete removal of dicalcium phosphate (DCP) (P < 0.05). Supplement phytase in the NC diet elicits a positive response on each one of those variables. Laying hens consuming the NC feed with 900 FTU/kg of phytase produced more eggs per hen-housed compared with the phytase dosages of 300 and 600 FTU/kg. Body composition was not affected by dietary nPP, Ca, Na, dig AA, and energy reductions (P > 0.05). At 72-wk-old, tibia ash was reduced in hens consuming the NC diet vs. PC (P < 0.05) and no difference was observed between hens supplemented with phytase and the PC feed. Margin over feeding cost increased in a dose-dependent manner with phytase supplementation. Supplementation with 900 FTU/kg of phytase is recommended to improve the number of eggs produced per hen-housed and the number of marketable eggs produced through 23 to 72 wk of age, under this dietary setting.
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- 2023
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3. Serial laboratory biomarkers are associated with ICU outcomes in patients hospitalized with COVID-19.
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Xinan Wang, Emma White, Francesca Giacona, Amita Khurana, Yi Li, David C Christiani, and Jehan W Alladina
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Medicine ,Science - Abstract
BackgroundClinical utility of routinely measured serial biomarkers in predicting escalation of inpatient care intensity and mortality among hospitalized patients with COVID-19 remains unknown.MethodsThis retrospective cohort study included patients with COVID-19 who admitted to the Massachusetts General Hospital between March and June 2020 and January to March 2021. White blood cell (WBC) count, platelet count, C-reactive protein (CRP), and D-dimer values were measured on days 1, 3, and 7 of admission. Clinical outcomes include 30- and 60-day morality, ICU transfer, and overall survival (OS) over a follow-up period of 90 days. The association between serial biomarkers and outcomes were assessed using multivariable logistic regression and Cox proportional hazards models.Measurements and main resultsOf the 456 patients hospitalized with COVID-19, 199 (43.6%) were ICU, 179 (39.3%) were medical floor, and 78 (17.1%) were initially admitted to the medical floor and then transferred to the ICU. In adjusted analyses, each unit increase in the slope of CRP was associated with a 42% higher odds of ICU transfer after controlling for the initial admission level (OR = 1.42, 95% CI: 1.25-1.65, P < 0.001). Including serial change in CRP levels from initial level on admission achieved the greatest predictive accuracy for ICU transfer (AUC = 0.72, 95% CI: 0.64-0.79).ConclusionsSerial change in CRP levels from admission is associated with escalations of inpatient care intensity and mortality among hospitalized patients with COVID-19.
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- 2023
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4. Enhancing developmental and reproductive toxicity knowledge: A new AOP stemming from glutathione depletion
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Alun Myden, Susanne A. Stalford, Adrian Fowkes, Emma White, Akihiko Hirose, and Takashi Yamada
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Adverse outcome pathway ,Glutathione ,Male fertility toxicity ,Structure activity relationship ,Toxicology. Poisons ,RA1190-1270 - Abstract
Integrated approaches to testing and assessments (IATAs) have been proposed as a method to organise new approach methodologies in order to replace traditional animal testing for chemical safety assessments. To capture the mechanistic aspects of toxicity assessments, IATAs can be framed around the adverse outcome pathway (AOP) concept. To utilise AOPs fully in this context, a sufficient number of pathways need to be present to develop fit for purpose IATAs. In silico approaches can support IATA through the provision of predictive models and also through data integration to derive conclusions using a weight-of-evidence approach. To examine the maturity of a developmental and reproductive toxicity (DART) AOP network derived from the literature, an assessment of its coverage was performed against a novel toxicity dataset. A dataset of diverse compounds, with data from studies performed according to OECD test guidelines TG-421 and TG-422, was curated to test the performance of an in silico model based on the AOP network – allowing for the identification of knowledge gaps within the network. One such gap in the knowledge was filled through the development of an AOP stemming from the molecular initiating event ‘glutathione reaction with an electrophile’ leading to male fertility toxicity. The creation of the AOP provided the mechanistic rationale for the curation of pre-existing structural alerts to relevant key events. Integrating this new knowledge and associated alerts into the DART AOP network will improve its coverage of DART-relevant chemical space. In addition, broadening the coverage of AOPs for a particular regulatory endpoint may facilitate the development of, and confidence in, robust IATAs.
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- 2023
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5. A baseline for the genetic stock identification of Atlantic herring, Clupea harengus, in ICES Divisions 6.a, 7.b–c
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Edward D. Farrell, Leif Andersson, Dorte Bekkevold, Neil Campbell, Jens Carlsson, Maurice W. Clarke, Afra Egan, Arild Folkvord, Michaël Gras, Susan Mærsk Lusseau, Steven Mackinson, Cormac Nolan, Steven O'Connell, Michael O'Malley, Martin Pastoors, Mats E. Pettersson, and Emma White
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fisheries ,management ,genetic assignment ,stock identification ,Northwest herring ,West of Scotland herring ,Science - Abstract
Atlantic herring in International Council for Exploration of the Sea (ICES) Divisions 6.a, 7.b–c comprises at least three populations, distinguished by temporal and spatial differences in spawning, which have until recently been managed as two stocks defined by geographical delineators. Outside of spawning the populations form mixed aggregations, which are the subject of acoustic surveys. The inability to distinguish the populations has prevented the development of separate survey indices and separate stock assessments. A panel of 45 single-nucleotide polymorphisms, derived from whole-genome sequencing, were used to genotype 3480 baseline spawning samples (2014–2021). A temporally stable baseline comprising 2316 herring from populations known to inhabit Division 6.a was used to develop a genetic assignment method, with a self-assignment accuracy greater than 90%. The long-term temporal stability of the assignment model was validated by assigning archive (2003–2004) baseline samples (270 individuals) with a high level of accuracy. Assignment of non-baseline samples (1514 individuals) from Divisions 6.a, 7.b–c indicated previously unrecognized levels of mixing of populations outside of the spawning season. The genetic markers and assignment models presented constitute a ‘toolbox’ that can be used for the assignment of herring caught in mixed survey and commercial catches in Division 6.a into their population of origin with a high level of accuracy.
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- 2022
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6. Laser powder bed fusion additive manufacturing of oxide dispersion strengthened steel using gas atomized reaction synthesis powder
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Timothy Horn, Christopher Rock, Djamel Kaoumi, Iver Anderson, Emma White, Tim Prost, Joel Rieken, Sourabh Saptarshi, Ryan Schoell, Matt DeJong, Sarah Timmins, Jennifer Forrester, Saul Lapidus, Ralph Napolitano, Dalong Zhang, and Jens Darsell
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Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
Mechanically alloyed Fe-based alloys with oxide dispersion strengthening have largely dropped out of the marketplace due to high cost related to problems with complex and unreliable processing. Nevertheless, the desirable properties of oxide dispersion strengthened (ODS) steels have motivated research on alternate processing routes aimed at improving processing simplicity and reliability. Powders produced by gas atomization reaction synthesis (GARS) consist of stable Fe-Y intermetallic phases and a Cr surface oxide layer that acts as a chemical reservoir during solid-state processing and heat treatment to form a high density of nano-scale oxides. This research explores the use of Fe GARS powders, with 15 wt% Cr with micro-alloyed additions of 0.15 wt% Y and 0.10% Ti, in laser powder bed fusion (LPBF) additive manufacturing (AM), and evaluates the effectiveness of oxide dispersoid formation in the liquid melt pool. Additional oxygen was introduced by varying the LPBF chamber atmospheres using Ar, Ar + 1 wt% O, Ar + 5 wt% O, and air. Characterization of LPBF consolidated solids demonstrated the formation of a high density of nano-scale Y-Ti oxides in the build microstructures from the GARS precursor powders.
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- 2022
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7. Improving turnaround times for HLA-B*27 and HLA-B*57:01 gene testing: a Barts Health NHS Trust quality improvement project
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Nathan Proudlove, Emma White, and Delordson Kallon
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Medicine (General) ,R5-920 - Abstract
Among other tests, Barts Health NHS Trust clinical transplantation laboratory conducts two important gene-detection tests: human leucocyte antigen (HLA)-B*27 (‘B27’, associated with the diagnosis of ankylosing spondylitis) and HLA-B*57:01 (‘B57’, associated with prediction of abacavir hypersensitivity disorder). The turnaround time (TaT) from sample receipt to return of results is important to clinicians and their patients but was not monitored. Furthermore, we anticipated an imminent increase in demand from a forthcoming pathology service merger, together with long-term increases with the rise of personalised genetic medicine.In this quality improvement project, we identified current TaT performance and sources of delay. Over three plan-do-study-act (PDSA) cycles, we tested three change ideas, two involving using IT to remove manual administrative steps and alert us to samples needing progressing; both were retained. The other change involved separating out the targeted tests; we judged this not worthwhile with current demand levels, although something to be re-examined when volumes increase. During the project, we reduced mean TaT from 3.8 to 3.3 days and increased the proportion within our 5-day target from 78% to 100%. These have been sustained (at 3.4 days and 97%) for the 3 months following our PDSA cycles and illustrate that reducing variation can be as impactful as reducing the mean.We conducted this project during the COVID-19 disruption, which reduced demand substantially. We took advantage of this to allow staff to spend time on these improvement activities. Another interesting feature of the work is that during the project, we compared changes in performance on our targeted B27/B57 tests with that on another comparable test as a control, to consider the impact of the general increased attention (the Hawthorne effect). We found that performance on this control also increased comparably, but then fell away after our project finished, while it did not for B27/B57.
- Published
- 2021
- Full Text
- View/download PDF
8. The impact of bariatric surgery on the resolution of obstructive sleep apnoea
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Toritseju Oluwafunmilayo Sillo, Simon Lloyd-Owen, Emma White, Karen Abolghasemi-Malekabadi, Penny Lock-Pullan, Muhammed Ali, Anthony Perry, Steven John Robinson, and Martin Stuart Wadley
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Obesity ,Sleep apnoea, obstructive ,Bariatric surgery ,Continuous positive airway pressure ,Weight loss ,Medicine ,Biology (General) ,QH301-705.5 ,Science (General) ,Q1-390 - Abstract
Abstract Objective Obesity is associated with a high incidence of obstructive sleep apnoea (OSA). Bariatric surgery is postulated to lead to OSA resolution, but there is inconclusive evidence on its efficacy. We used objective measurements to determine the rate of resolution or improvement of OSA in patients who had bariatric procedures in our unit. Results Data was analysed on all patients with OSA who underwent bariatric procedures [laparoscopic Roux-en-Y gastric bypass (LRYGB) and sleeve gastrectomy (LSG)] between June 2012 and September 2016 in our unit. 47 patients (26.7%) were diagnosed with OSA. Mean age was 48.5 years. 63.8% were female. 43 required nocturnal continuous positive airway pressure (CPAP) support. Procedures were LRYGB (n = 26) and LSG (n = 21). Mean excess weight loss was 56.1%. Mean start apnoea-hypopnoea index (AHI) on CPAP was 6.4 events/hr and end AHI was 1.4 events/h. 14 patients (32.6%) had complete OSA resolution and 12 (27.9%) showed improvement in pressure support requirements. We demonstrated that 55.3% of patients had resolution or improvement in OSA following bariatric surgery. However, there was a high rate of non-attendance of follow-up appointments. Future efforts will involve analysis of the reasons for this to ensure more robust monitoring.
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- 2018
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9. Improving Chronic Pain Management Processes in Primary Care Using Practice Facilitation and Quality Improvement: The Central Appalachia Inter-Professional Pain Education Collaborative
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Roberto Cardarelli, Sarah Weatherford, Jennifer Schilling, Dana King, Sue Workman, Wade Rankin, Juanita Hughes, Jonathan Piercy, Amy Conley-Sallaz, Melissa Zook, Kendra Unger, Emma White, Barbara Astuto, and Bobbi Stover
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quality improvement ,chronic pain ,Appalachia ,implementation ,dissemination ,primary care ,Medicine - Abstract
Purpose: With the increasing burden of chronic pain and opioid use, provider shortages in Eastern Kentucky and West Virginia have experienced many challenges related to chronic pain management. This study tested a practice facilitator model in both academic and community clinics that selected and implemented best practice processes to better assist patients with chronic pain and increase the use of interdisciplinary health care services. Methods: Using a quasi-experimental design, a practice facilitator was assigned to each state’s clinics and trained clinic teams in quality improvement methods to implement chronic pain tool(s) and workflow processes. Charts for 695 patients with chronic pain using opioids, from 8 randomly selected clinics in eastern Appalachia, were reviewed to assess for changes in clinic processes. Results: Statistically significant improvements were found in 10 out of 16 chronic pain best practice process measures. These included improved workflow implementation (P < 0.001), increased urine drug screen test orders (P = 0.001) and increased utilization of controlled medication agreements (P = 0.004). In total, 7 of 8 clinics significantly improved in at least one, if not all, selected and implemented process measures. Conclusions: Our findings indicate that practice facilitation, standardization of workflows and formation of structured clinical teams can improve processes of care in chronic pain management and facilitate the use of interdisciplinary services. Future studies are needed to assess long-term patient-centered outcomes that may result from improved processes of chronic pain care.
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- 2017
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10. Disseminating findings from the Data Analysis with Privacy Protection for Epidemiological Research (DAPPER) workshop
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Rebecca Wilson, Paul Burton, Innes Asher, Kim Carter, Adriana Castelli, David Cumin, Chris Evelo, Lesley Stewart, Kelvin Tsoi, and Emma White
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Demography. Population. Vital events ,HB848-3697 - Abstract
ABSTRACT Objectives The effective exploitation of what are often called big data is increasingly important. They provide the evidence in evidence-based health care and underpin scientific progress in many domains including social/economic policy. Typically, an optimal analysis involves working directly with microdata; i.e. the detailed data relating to each individual in the dataset. But there are many ethico-legal and other governance restrictions on physically sharing microdata. Furthermore, researchers or institutions may have an extensive intellectual property investment in complex microdata and although keen for other researchers to analyse their data they may not wish to give them a physical copy. These restrictions can discourage the use of optimum approaches to analysing pivotal data and slow scientific progress. Data science groups across the world are exploring privacy-protected approaches to analysing microdata without having to physically share the data. Approach A two day international workshop was arranged focussing on privacy protected approaches to data analysis – particularly federated analysis where raw data remain at their original site of collection. The workshop considered the range of approaches that exist, and those that are currently being developed. It explored the strengths, weaknesses, opportunities and challenges associated with these methods and identified situations where specific approaches have a particularly important role. The workshop included a number of practical sessions where potential users could watch demonstrations of the various approaches in action and run analyses themselves. Results The Data Analysis with Privacy Protection for Epidemiological Research (DAPPER) workshop was held 22-23rd August 2016, Bristol. We report back to the broader community on the outcomes of this workshop that focussed on exploring current approaches, tools and technical solutions that facilitate sensitive data to be shared and analysed. Conclusions The workshop has helped map out key opportunities and challenges and assisted potential users, developers and other stakeholders (e.g. funders/journals) to recognise the strengths and weaknesses of different privacy protected analytic approaches. The workshop will encourage further methodological work in this field and better informed application of existing methods.
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- 2017
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11. Visual Scanning in the Recognition of Facial Affect in Traumatic Brain Injury
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Suzane Vassallo, Jacinta Douglas, and Emma White
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Psychology ,BF1-990 - Abstract
We investigated the visual scanning strategy employed by a group of individuals with a severe traumatic brain injury (TBI) during a facial affect recognition task. Four males with a severe TBI were matched for age and gender with 4 healthy controls. Eye movements were recorded while pictures of static emotional faces were viewed (i.e., sad, happy, angry, disgusted, anxious, surprised). Groups were compared with respect to accuracy in labelling the emotional facial expression, reaction time, number and duration of fixations to internal (i.e., eyes + nose + mouth), and external (i.e., all remaining) regions of the stimulus. TBI participants demonstrated significantly reduced accuracy and increased latency in facial affect recognition. Further, they demonstrated no significant difference in the number or duration of fixations to internal versus external facial regions. Control participants, however, fixated more frequently and for longer periods of time upon internal facial features. Impaired visual scanning can contribute to inaccurate interpretation of facial expression and this can disrupt interpersonal communication. The scanning strategy demonstrated by our TBI group appears more ‘widespread’ than that employed by their normal counterparts. Further work is required to elucidate the nature of the scanning strategy used and its potential variance in TBI.
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- 2011
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12. Influence of surface treatment on the metal dusting behavior of alloy 699 XA
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Emma White, Clara Schlereth, Maren Lepple, Heike Hattendorf, Benedikt Nowak, and Mathias C. Galetz
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Mechanics of Materials ,Mechanical Engineering ,Materials Chemistry ,Metals and Alloys ,Environmental Chemistry ,General Medicine ,Surfaces, Coatings and Films - Published
- 2022
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13. Chromium-Silicon Alloys with Fe and Ni for Structural High Temperature Applications
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Michael Kerbstadt, Emma White, and Mathias Galetz
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Cr-Si based-alloys are promising candidates due to their high melting point and good oxidation resistance. They are designed for working temperatures beyond Ni-base superalloys. The major drawbacks of Cr- based alloys are the embrittlement by Cr2N formation and high ductile to brittle transition temperatures (DBTT). This work investigates the effect of alloying Cr-Si-alloys with the elements Fe and Ni and targets the microstructure and precipitation of A15 phase. Varied compositions are manufactured by arc-melting and heat treatment at 1200°C, which enables controlled precipitation hardening by the Cr3Si-A15 phase.Ni can cause the effect of solution softening in Cr and increases the low-temperature ductility as a result. For Fe it is shown, that it stabilizes the two-phase structure consisting of nitration resistant A15 phase and Crss. Oxidation exposures at 1200°C in synthetic air indicate that Fe additions up to 5 at.% increase also the nitridation resistance of Crss.
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- 2023
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14. Oxidation behaviour of uncoated and PDC-SiAlOC glass-coated TiAl at 750 °C in dry and humid air
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Maciej Bik, Mathias Galetz, Lukas Mengis, Emma White, Wojciech Wieczorek, Klaudia Łyszczarz, Krzysztof Mroczka, Jakub Marchewka, and Maciej Sitarz
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General Physics and Astronomy ,Surfaces and Interfaces ,General Chemistry ,Condensed Matter Physics ,Surfaces, Coatings and Films - Published
- 2023
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15. Robust System Separation Strategy Considering Online Wide-Area Coherency Identification and Uncertainties of Renewable Energy Sources
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Shengyuan Liu, Qin Wang, Bo Zhang, Yuxuan Zhao, Yi Ding, Samantha Emma White, Zhenzhi Lin, Yilu Liu, and Li Yang
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Mathematical optimization ,Computer science ,020209 energy ,Phasor ,Energy Engineering and Power Technology ,Robust optimization ,02 engineering and technology ,Fuzzy logic ,Units of measurement ,Electric power system ,Robustness (computer science) ,0202 electrical engineering, electronic engineering, information engineering ,Islanding ,Electrical and Electronic Engineering ,Cluster analysis - Abstract
With the fast growth of renewable energy sources (RES), more and more uncertainties are involved and influencing the stable operation of power systems. Controlled islanding is the last measure to prevent power system blackouts, thus this paper aims to propose a novel model of system separation based on Online Coherency Identification and Adjustable Robust Optimization Programming (OCI-AROP) for minimizing load shedding considering the uncertainties of RES. First, Fuzzy C-Means (FCM) clustering method with F -statistics is utilized to identify the coherent generator groups with the frequency data measured by Phasor Measurement Units (PMUs). Then, the OCI-AROP model considering coherent group constraints, connectivity constraints and robustness constraints about RES are presented. Finally, the case studies on IEEE-39 bus system and WECC-179 bus system are employed to demonstrate the effectiveness of the proposed OCI-AROP model, and comparisons among the OCI-AROP model and the other models are also given to show its superiority.
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- 2020
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16. GCH1 Deficiency Activates Brain Innate Immune Response and Impairs Tyrosine Hydroxylase Homeostasis
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Hannah Larbalestier, Marcus Keatinge, Lisa Watson, Emma White, Siri Gowda, Wenbin Wei, Katjusa Koler, Svetlana A. Semenova, Adam M. Elkin, Neal Rimmer, Sean T. Sweeney, Julie Mazzolini, Dirk Sieger, Winston Hide, Jonathan McDearmid, Pertti Panula, Ryan B. MacDonald, Oliver Bandmann, Department of Anatomy, Medicum, Helsinki In Vivo Animal Imaging Platform (HAIP), Pertti Panula / Principal Investigator, and Neuroscience Center
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Tyrosine 3-Monooxygenase ,DYSTONIA ,Parkinson's disease ,microglia ,3124 Neurology and psychiatry ,Animals, Genetically Modified ,DOPAMINE ,PARKINSONS-DISEASE ,tyrosine hydroxylase ,Animals ,Homeostasis ,GTP CYCLOHYDROLASE-I ,Genetic Predisposition to Disease ,GENOME-WIDE ASSOCIATION ,GTP Cyclohydrolase ,Research Articles ,SUBSTANTIA-NIGRA ,NITRIC-OXIDE ,Sequence Analysis, RNA ,Dopaminergic Neurons ,General Neuroscience ,3112 Neurosciences ,Brain ,Parkinson Disease ,GTP cyclohydrolase 1 ,zebrafish ,MICROGLIAL ACTIVATION ,RISK LOCI ,Immunity, Innate ,MODEL ,tetrahydrobiopterin - Abstract
The Parkinson's disease (PD) risk gene GTP cyclohydrolase 1 (GCH1) catalyzes the rate-limiting step in tetrahydrobiopterin (BH4) synthesis, an essential cofactor in the synthesis of monoaminergic neurotransmitters. To investigate the mechanisms by which GCH1 deficiency may contribute to PD, we generated a loss of function zebrafishgch1mutant (gch1–/–), using CRISPR/Cas technology.gch1–/–zebrafish develop marked monoaminergic neurotransmitter deficiencies by 5 d postfertilization (dpf), movement deficits by 8 dpf and lethality by 12 dpf. Tyrosine hydroxylase (Th) protein levels were markedly reduced without loss of ascending dopaminergic (DAergic) neurons. L-DOPA treatment ofgch1–/–larvae improved survival without ameliorating the motor phenotype. RNAseq ofgch1–/–larval brain tissue identified highly upregulated transcripts involved in innate immune response. Subsequent experiments provided morphologic and functional evidence of microglial activation ingch1–/–. The results of our study suggest that GCH1 deficiency may unmask early, subclinical parkinsonism and only indirectly contribute to neuronal cell death via immune-mediated mechanisms. Our work highlights the importance of functional validation for genome-wide association studies (GWAS) risk factors and further emphasizes the important role of inflammation in the pathogenesis of PD.SIGNIFICANCE STATEMENTGenome-wide association studies have now identified at least 90 genetic risk factors for sporadic Parkinson's disease (PD). Zebrafish are an ideal tool to determine the mechanistic role of genome-wide association studies (GWAS) risk genes in a vertebrate animal model. The discovery of GTP cyclohydrolase 1 (GCH1) as a genetic risk factor for PD was counterintuitive, GCH1 is the rate-limiting enzyme in the synthesis of dopamine (DA), mutations had previously been described in the non-neurodegenerative movement disorder dopa-responsive dystonia (DRD). Rather than causing DAergic cell death (as previously hypothesized by others), we now demonstrate that GCH1 impairs tyrosine hydroxylase (Th) homeostasis and activates innate immune mechanisms in the brain and provide evidence of microglial activation and phagocytic activity.
- Published
- 2022
17. Microstructure development and properties of micro-alloyed copper, Cu-0.3Zr-0.15Ag, produced by electron beam additive manufacturing
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Denysse Gonzalez Ovalle, Christopher Rock, Christopher Winkler, Devin Hartshorn, Chris Barr, Tristan Cullom, Prithwish Tarafder, Tim Prost, Emma White, Iver Anderson, and Tim Horn
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Mechanics of Materials ,Mechanical Engineering ,General Materials Science ,Condensed Matter Physics - Published
- 2023
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18. Improving turnaround times for HLA-B*27 and HLA-B*57:01 gene testing:A Barts Health NHS Trust quality improvement project
- Author
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Emma White, Nathan Proudlove, and Delordson Kallon
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laboratory medicine ,medicine.medical_specialty ,Medicine (General) ,Quality management ,Leadership and Management ,time-to-treatment ,Medical laboratory ,Turnaround time ,State Medicine ,R5-920 ,control charts/run charts ,Abacavir ,NHS ,medicine ,Humans ,diagnostic services ,Quality improvement ,HLA-B27 Antigen ,business.industry ,SARS-CoV-2 ,Higher Specialist Scientist Training programme ,Health Policy ,Hawthorne effect ,Public Health, Environmental and Occupational Health ,COVID-19 ,Quality Improvement ,Test (assessment) ,Transplantation ,HLA-B Antigens ,Emergency medicine ,pathology ,business ,PDCA ,medicine.drug - Abstract
Among other tests, Barts Health NHS Trust clinical transplantation laboratory conducts two important gene-detection tests: human leucocyte antigen (HLA)-B*27 (‘B27’, associated with the diagnosis of ankylosing spondylitis) and HLA-B*57:01 (‘B57’, associated with prediction of abacavir hypersensitivity disorder). The turnaround time (TaT) from sample receipt to return of results is important to clinicians and their patients but was not monitored. Furthermore, we anticipated an imminent increase in demand from a forthcoming pathology service merger, together with long-term increases with the rise of personalised genetic medicine.In this quality improvement project, we identified current TaT performance and sources of delay. Over three plan-do-study-act (PDSA) cycles, we tested three change ideas, two involving using IT to remove manual administrative steps and alert us to samples needing progressing; both were retained. The other change involved separating out the targeted tests; we judged this not worthwhile with current demand levels, although something to be re-examined when volumes increase. During the project, we reduced mean TaT from 3.8 to 3.3 days and increased the proportion within our 5-day target from 78% to 100%. These have been sustained (at 3.4 days and 97%) for the 3 months following our PDSA cycles and illustrate that reducing variation can be as impactful as reducing the mean.We conducted this project during the COVID-19 disruption, which reduced demand substantially. We took advantage of this to allow staff to spend time on these improvement activities. Another interesting feature of the work is that during the project, we compared changes in performance on our targeted B27/B57 tests with that on another comparable test as a control, to consider the impact of the general increased attention (the Hawthorne effect). We found that performance on this control also increased comparably, but then fell away after our project finished, while it did not for B27/B57.
- Published
- 2021
- Full Text
- View/download PDF
19. Bariatric Surgery as a Viable Treatment for Idiopathic Intracranial Hypertension: a Case Series and Review of Literature
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Fridi Levine, Anthony Perry, Pol Ricart, Steven John Robinson, Emma White, Karen Abolghasemi-Malekabadi, Vimaladhithan Mahendran, Madeleine Williams, and Martin Wadley
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Adult ,medicine.medical_specialty ,Sleeve gastrectomy ,Nausea ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Original Contributions ,Body Mass Index ,Weight loss ,Weight Loss ,medicine ,Humans ,Preventable blindness ,Randomized Controlled Trials as Topic ,Bariatric surgery ,Pseudotumor Cerebri ,Nutrition and Dietetics ,business.industry ,medicine.disease ,Surgery ,Obesity, Morbid ,Idiopathic intracranial hypertension ,Radicular pain ,Vomiting ,Female ,Cerebrospinal fluid pressure ,medicine.symptom ,Headaches ,business ,Body mass index - Abstract
Purpose Idiopathic intracranial hypertension is a significant cause of preventable blindness. Patients suffer from debilitating headaches, pulsatile tinnitus, nausea, vomiting, photophobia and radicular pain. At this rate, treatment cost will increase to 462.7 million pounds sterling annually by 2030. Weight loss is the only proven disease-modifying therapy for reversal of idiopathic intracranial hypertension. Bariatric surgery leads to superlative weight loss and reversal of related comorbidities. The case series and literature review aim to raise awareness of bariatric surgery as a safe and effective treatment modality for idiopathic intracranial hypertension. Material and Methods The literature review comprises three systematic analysis and one randomised control trial which were identified after a PubMed search. In the case series, we have included four patients with a preoperative diagnosis of long-standing idiopathic intracranial hypertension. They were referred to our department for bariatric surgery by the neuro-ophthalmologist between January and December 2018. They were followed up for 2 years after bariatric surgery. Results All four patients were women with a mean age of 34 years. Mean body mass index reduced from 47.3 kg/m2 before surgery to 30 kg/m2 at the end of 2 years after surgery. They showed significant improvement or resolution in their symptoms related to idiopathic intracranial hypertension, and none of them required further cerebrospinal fluid pressure reducing procedures. Conclusion Bariatric surgery is a safe and effective method of treating idiopathic intracranial hypertension. It is superior compared to medical management and cerebrospinal fluid pressure reducing procedures which have high rates of recurrence.
- Published
- 2021
20. Correction to: Instance Segmentation for Direct Measurements of Satellites in Metal Powders and Automated Microstructural Characterization from Image Data
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Ryan Cohn, Iver Anderson, Tim Prost, Jordan Tiarks, Emma White, and Elizabeth Holm
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General Engineering ,General Materials Science - Published
- 2021
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21. Improving Chronic Pain Management Processes in Primary Care Using Practice Facilitation and Quality Improvement: The Central Appalachia Inter-Professional Pain Education Collaborative
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Juanita Hughes, Sarah Weatherford, Roberto Cardarelli, Bobbi Stover, Dana King, Barbara Astuto, Jennifer Schilling, Emma White, Kendra Unger, Sue Workman, Wade Rankin, Jonathan Piercy, Melissa Zook, and Amy Conley-Sallaz
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medicine.medical_specialty ,Quality management ,Best practice ,lcsh:Medicine ,030204 cardiovascular system & hematology ,dissemination ,primary care ,03 medical and health sciences ,0302 clinical medicine ,Health care ,medicine ,Appalachia ,030212 general & internal medicine ,implementation ,Management process ,business.industry ,lcsh:R ,Chronic pain ,General Medicine ,medicine.disease ,Quality Improvement ,Test (assessment) ,Workflow ,Facilitator ,Physical therapy ,chronic pain ,business - Abstract
Purpose: With the increasing burden of chronic pain and opioid use, provider shortages in Eastern Kentucky and West Virginia have experienced many challenges related to chronic pain management. This study tested a practice facilitator model in both academic and community clinics that selected and implemented best practice processes to better assist patients with chronic pain and increase the use of interdisciplinary health care services. Methods: Using a quasi-experimental design, a practice facilitator was assigned to each state’s clinics and trained clinic teams in quality improvement methods to implement chronic pain tool(s) and workflow processes. Charts for 695 patients with chronic pain using opioids, from 8 randomly selected clinics in eastern Appalachia, were reviewed to assess for changes in clinic processes. Results: Statistically significant improvements were found in 10 out of 16 chronic pain best practice process measures. These included improved workflow implementation (P < 0.001), increased urine drug screen test orders (P = 0.001) and increased utilization of controlled medication agreements (P = 0.004). In total, 7 of 8 clinics significantly improved in at least one, if not all, selected and implemented process measures. Conclusions: Our findings indicate that practice facilitation, standardization of workflows and formation of structured clinical teams can improve processes of care in chronic pain management and facilitate the use of interdisciplinary services. Future studies are needed to assess long-term patient-centered outcomes that may result from improved processes of chronic pain care.
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- 2017
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22. Clonality, virulence and antimicrobial resistance of enteroaggregative Escherichia coli from Mirzapur, Bangladesh
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Claire Jenkins, Emma White, Marie Anne Chattaway, John Wain, Ross J Harris, Michaela Day, Marwa Ahmad, James Rogers, Martin Day, Alejandro Cravioto, Kaisar A. Talukder, Julia Mtwale, and David Powell
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Genetic Markers ,0301 basic medicine ,Microbiology (medical) ,Serotype ,Virulence Factors ,medicine.drug_class ,030106 microbiology ,Antibiotics ,Virulence ,Context (language use) ,Biology ,Microbiology ,resistance ,03 medical and health sciences ,Antibiotic resistance ,SDG 3 - Good Health and Well-being ,Drug Resistance, Bacterial ,Escherichia coli ,medicine ,Humans ,Typing ,Gene ,enteroaggregative E. coli ,Escherichia coli Infections ,Genetics ,Bangladesh ,General Medicine ,Anti-Bacterial Agents ,Clinical Microbiology ,EAEC ,030104 developmental biology ,Enteroaggregative Escherichia coli ,Research Article ,MLST - Abstract
Purpose. This study investigates the virulence and antimicrobial resistance in association with common clonal complexes (CCs) of enteroaggregative Escherichia coli (EAEC) isolated from Bangladesh. The aim was to determine whether specific CCs were more likely to be associated with putative virulence genes and/or antimicrobial resistance. Methodology. The presence of 15 virulence genes (by PCR) and susceptibility to 18 antibiotics were determined for 151 EAEC isolated from cases and controls during an intestinal infectious disease study carried out between 2007–2011 in the rural setting of Mirzapur, Bangladesh (Kotloff KL, Blackwelder WC, Nasrin D, Nataro JP, Farag TH et al. Clin Infect Dis 2012;55:S232–S245). These data were then analysed in the context of previously determined serotypes and clonal complexes defined by multi-locus sequence typing. Results. Overall there was no association between the presence of virulence or antimicrobial resistance genes in isolates of EAEC from cases versus controls. However, when stratified by clonal complex (CC) one CC associated with cases harboured more virulence factors (CC40) and one CC harboured more resistance genes (CC38) than the average. There was no direct link between the virulence gene content and antibiotic resistance. Strains within a single CC had variable virulence and resistance gene content indicating independent and multiple gene acquisitions over time. Conclusion. In Bangladesh, there are multiple clonal complexes of EAEC harbouring a variety of virulence and resistance genes. The emergence of two of the most successful clones appeared to be linked to either increased virulence (CC40) or antimicrobial resistance (CC38), but increased resistance and virulence were not found in the same clonal complexes.
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- 2017
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23. Can we manage groundwater? A method to determine the quantitative testability of groundwater management plans
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Tim J. Peterson, E. Carrara, Justin F. Costelloe, Andrew W. Western, and Emma White
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Engineering ,business.industry ,0208 environmental biotechnology ,Environmental resource management ,Rubric ,Context (language use) ,02 engineering and technology ,Plan (drawing) ,020801 environmental engineering ,Water resources ,Resource (project management) ,Component (UML) ,business ,Groundwater ,Testability ,Water Science and Technology - Abstract
Groundwater is the world's largest freshwater resource and due to overextraction, levels have declined in many regions causing extensive social and environmental impacts. Groundwater management seeks to balance and mitigate the detrimental impacts of development, with plans commonly used to outline management pathways. Thus, plan efficiency is crucial, but seldom are plans systematically and quantitatively assessed for effectiveness. This study frames groundwater management as a system control problem in order to develop a novel testability assessment rubric to determine if plans meet the requirements of a control loop, and subsequently, whether they can be quantitatively tested. Seven components of a management plan equivalent to basic components of a control loop were determined, and requirements of each component necessary to enable testability were defined. Each component was weighted based upon proposed relative importance, then segmented into rated categories depending on the degree the requirements were met. Component importance varied but, a defined objective or acceptable impact was necessary for plans to be testable. The rubric was developed within the context of the Australian groundwater management industry, and while use of the rubric is not limited to Australia, it was applied to 15 Australian groundwater management plans and approximately 47% were found to be testable. Considering the importance of effective groundwater management, and the central role of plans, our lack of ability to test many plans is concerning.
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- 2016
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24. PPAPI: A Program for Groundwater Modeling Tasks in Distributed Parallel Computing Environments
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Kevin Hayley, Jens Schumacher, Louis-Charles Boutin, and Emma White
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business.industry ,Computer science ,0208 environmental biotechnology ,02 engineering and technology ,Parallel computing ,020801 environmental engineering ,Software ,Computer Simulation ,Computers in Earth Sciences ,business ,Groundwater model ,Groundwater ,Water Science and Technology - Published
- 2017
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25. The impact of bariatric surgery on the resolution of obstructive sleep apnoea
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Martin Wadley, Steven John Robinson, Karen Abolghasemi-Malekabadi, Toritseju Oluwafunmilayo Sillo, Anthony Perry, Muhammed Ali, Simon Lloyd-Owen, Penny Lock-Pullan, and Emma White
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Adult ,Male ,Weight loss ,medicine.medical_specialty ,Sleeve gastrectomy ,Gastroplasty ,medicine.medical_treatment ,Continuous positive airway pressure ,Gastric bypass ,Gastric Bypass ,lcsh:Medicine ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,0302 clinical medicine ,stomatognathic system ,Outcome Assessment, Health Care ,medicine ,Humans ,In patient ,Obesity ,030212 general & internal medicine ,lcsh:Science (General) ,lcsh:QH301-705.5 ,Bariatric surgery ,Sleep Apnea, Obstructive ,business.industry ,Incidence (epidemiology) ,lcsh:R ,Mean age ,General Medicine ,Middle Aged ,medicine.disease ,Obesity, Morbid ,nervous system diseases ,respiratory tract diseases ,Surgery ,Research Note ,lcsh:Biology (General) ,030228 respiratory system ,Female ,Sleep apnoea, obstructive ,medicine.symptom ,business ,lcsh:Q1-390 - Abstract
Objective Obesity is associated with a high incidence of obstructive sleep apnoea (OSA). Bariatric surgery is postulated to lead to OSA resolution, but there is inconclusive evidence on its efficacy. We used objective measurements to determine the rate of resolution or improvement of OSA in patients who had bariatric procedures in our unit. Results Data was analysed on all patients with OSA who underwent bariatric procedures [laparoscopic Roux-en-Y gastric bypass (LRYGB) and sleeve gastrectomy (LSG)] between June 2012 and September 2016 in our unit. 47 patients (26.7%) were diagnosed with OSA. Mean age was 48.5 years. 63.8% were female. 43 required nocturnal continuous positive airway pressure (CPAP) support. Procedures were LRYGB (n = 26) and LSG (n = 21). Mean excess weight loss was 56.1%. Mean start apnoea-hypopnoea index (AHI) on CPAP was 6.4 events/hr and end AHI was 1.4 events/h. 14 patients (32.6%) had complete OSA resolution and 12 (27.9%) showed improvement in pressure support requirements. We demonstrated that 55.3% of patients had resolution or improvement in OSA following bariatric surgery. However, there was a high rate of non-attendance of follow-up appointments. Future efforts will involve analysis of the reasons for this to ensure more robust monitoring.
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- 2018
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26. Disseminating findings from the Data Analysis with Privacy Protection for Epidemiological Research (DAPPER) workshop
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Kelvin K.F. Tsoi, Kim W. Carter, David Cumin, Adriana Castelli, Emma White, Paul Burton, Chris T. Evelo, Innes Asher, Rebecca Wilson, and Lesley A. Stewart
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Engineering ,Information Systems and Management ,Management science ,business.industry ,Scientific progress ,Corporate governance ,Big data ,Microdata (statistics) ,Health Informatics ,Intellectual property ,Data science ,Health care ,Raw data ,business ,Strengths and weaknesses ,Information Systems ,Demography - Abstract
ObjectivesThe effective exploitation of what are often called big data is increasingly important. They provide the evidence in evidence-based health care and underpin scientific progress in many domains including social/economic policy. Typically, an optimal analysis involves working directly with microdata; i.e. the detailed data relating to each individual in the dataset. But there are many ethico-legal and other governance restrictions on physically sharing microdata. Furthermore, researchers or institutions may have an extensive intellectual property investment in complex microdata and although keen for other researchers to analyse their data they may not wish to give them a physical copy. These restrictions can discourage the use of optimum approaches to analysing pivotal data and slow scientific progress. Data science groups across the world are exploring privacy-protected approaches to analysing microdata without having to physically share the data. ApproachA two day international workshop was arranged focussing on privacy protected approaches to data analysis – particularly federated analysis where raw data remain at their original site of collection. The workshop considered the range of approaches that exist, and those that are currently being developed. It explored the strengths, weaknesses, opportunities and challenges associated with these methods and identified situations where specific approaches have a particularly important role. The workshop included a number of practical sessions where potential users could watch demonstrations of the various approaches in action and run analyses themselves. ResultsThe Data Analysis with Privacy Protection for Epidemiological Research (DAPPER) workshop was held 22-23rd August 2016, Bristol. We report back to the broader community on the outcomes of this workshop that focussed on exploring current approaches, tools and technical solutions that facilitate sensitive data to be shared and analysed. ConclusionsThe workshop has helped map out key opportunities and challenges and assisted potential users, developers and other stakeholders (e.g. funders/journals) to recognise the strengths and weaknesses of different privacy protected analytic approaches. The workshop will encourage further methodological work in this field and better informed application of existing methods.
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- 2017
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27. Application of the Iterative Ensemble Smoother Method and Cloud Computing: A Groundwater Modeling Case Study
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Alexis Valenza, Kevin Hayley, Bruce Hutchison, Emma White, and Jens Schumacher
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Mathematical optimization ,lcsh:Hydraulic engineering ,010504 meteorology & atmospheric sciences ,Groundwater flow ,Computer science ,Geography, Planning and Development ,0207 environmental engineering ,Open-pit mining ,Aquifer ,02 engineering and technology ,mining ,Aquatic Science ,01 natural sciences ,Biochemistry ,lcsh:Water supply for domestic and industrial purposes ,lcsh:TC1-978 ,Iterative Ensemble Smoother ,Pit water ,Uncertainty quantification ,020701 environmental engineering ,Uncertainty analysis ,0105 earth and related environmental sciences ,Water Science and Technology ,lcsh:TD201-500 ,groundwater modeling ,geography ,geography.geographical_feature_category ,business.industry ,predictive uncertainty analysis cloud computing ,business ,Groundwater model ,Numerical stability - Abstract
Numerical groundwater modelling to support mining decisions is often challenging and time consuming. Simulation of open pit mining for model calibration or prediction requires models that include unsaturated flow, large magnitude hydraulic gradients and often require transient simulations with time varying material properties and boundary conditions. This combination of factors typically results in models with long simulation times and/or some level of numerical instability. In modelling practice, long run times and instability can result in reduced effort for predictive uncertainty analysis, and ultimately decrease the value of the decision-support modelling. This study presents an early application of the Iterative Ensemble Smoother (IES) method of calibration-constrained uncertainty analysis to a mining groundwater flow model. The challenges of mining models and uncertainty quantification were addressed using the IES method and facilitated by highly parallelized cloud computing. The project was an open pit mine in South Australia that required predictions of pit water levels and inflow rates to guide the design of a proposed pumped hydro energy storage system. The IES calibration successfully produced 150 model parameter realizations that acceptably reproduced groundwater observations. The flexibility of the IES method allowed for the inclusion of 1493 adjustable parameters and geostatistical realizations of hydraulic conductivity fields to be included in the analysis. Through the geostatistical realizations and IES analysis, alternative conceptual models of fractured rock aquifer orientation and connections could be conditioned to observation data and used for predictive uncertainty analysis. Importantly, the IES method out-performed finite difference methods when model simulations contained small magnitude numerical instabilities.
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- 2019
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28. Identifying engaging features of schooling: assessing the psychometric soundness of student-generated research
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Suzanne Carrington, Derek Bland, Rebecca Spooner-Lane, and Emma White
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Soundness ,Medical education ,media_common.quotation_subject ,education ,Student engagement ,Education ,Arts and Humanities (miscellaneous) ,Work (electrical) ,Secondary analysis ,Perception ,Pedagogy ,School engagement ,Disengagement theory ,Psychology ,media_common - Abstract
In this article we report on data analysed from a student project about attitudes to school and student perception of engagement and disengagement. The data were collected by students in an Australian study that employed the Young People as Researchers model. Middle year students devised and administered a questionnaire to students in grade 8, 9 and 10 at a secondary school in Australia. A total of 239 students completed the questionnaire. The students completed the initial analysis, which was followed by a more detailed analysis by the authors of this article. The findings support the work of American, British and Australian researchers about the factors that influence engagement and disengagement from schooling. The reported outcomes from the student work and the secondary analysis indicate that students do have the capacity to undertake valid and meaningful research and can make informed contributions to school improvement and student engagement.
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- 2013
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29. Embodied metaphors and emotions in the moralization of restrained eating practices
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Emma White, Sana Sheikh, Lucia Botindari, and University of St Andrews. School of Psychology and Neuroscience
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Emotion ,BF Psychology ,Sociology and Political Science ,Social Psychology ,Metaphor ,media_common.quotation_subject ,Restrained eating ,BF ,Cognition ,Morality ,Embodied metaphor ,Feeling ,Embodied cognition ,Moral emotions ,Overeating ,Psychology ,Social psychology ,media_common - Abstract
Moralization is the process whereby preferences are converted to values (Rozin, 1999). Two studies used an embodied metaphor approach, in which moral metaphors are grounded in one’s sense of physical cleanliness, to investigate whether restrained eating practices are moralized among women. Specifically, we predicted that the regulation of food intake by women is embodied in their feelings of physical cleanliness. Study 1 found that failures of restrained eating (i.e., overeating) increased accessibility of physical cleanliness-related words for women, but not men. Study 2 found that increased negative moral emotions fully mediated the effect of overeating on a desire for physical cleanliness. Overall, the studies argue for the importance of morality in restrained eating and in the central role of emotions in the embodiment of cognitive metaphors. Postprint
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- 2013
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30. Examining service utilisation and impact among consumers of a national mental health stepped care programme in Australia: a protocol using linked administrative data
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Emma Whitehead, Rhian Jones, Katharina Merollini, Jane Taylor, Rachel Cole, Mary Kynn, Angela Carberry, and Sanjoti Parekh
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Medicine - Abstract
Introduction Mental well-being is a global public health priority with increasing mental health conditions having substantial burden on individuals, health systems and society. ‘Stepped care’, where services are provided at an intensity to meet the changing needs of the consumer, is the chosen approach to mental health service delivery in primary healthcare in Australia for its efficiencies and patient outcomes; yet limited evidence exists on how the programme is being rolled out and its impact in practice. This protocol outlines a data linkage project to characterise and quantify healthcare service utilisation and impacts among a cohort of consumers of a national mental health stepped care programme in one region of Australia.Methods and analysis Data linkage will be used to establish a retrospective cohort of consumers of mental health stepped care services between 1 July 2020 and 31 December 2021 in one primary healthcare region in Australia (n=approx. 12 710). These data will be linked with records from other healthcare service data sets (eg, hospitalisations, emergency department presentations, community-based state government-delivered mental healthcare, hospital costs). Four areas for analysis will include: (1) characterising the nature of mental health stepped care service use; (2) describing the cohort’s sociodemographic and health characteristics; (3) quantifying broader service utilisation and associated economic costs; and (4) assessing the impact of mental health stepped care service utilisation on health and service outcomes.Ethics and dissemination Approval from the Darling Downs Health Human Research Ethics Committee (HREA/2020/QTDD/65518) has been granted. All data will be non-identifiable, and research findings will be disseminated through peer-reviewed journals, conference presentations and industry meetings.
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- 2023
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31. The best supervisor
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Emma White
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Multidisciplinary ,White (horse) ,Mentorship ,Supervisor ,0208 environmental biotechnology ,02 engineering and technology ,020801 environmental engineering ,Management - Abstract
I was lucky to have a PhD supervisor whose mentorship transformed my academic experience, says Emma Kathryn White. I was lucky to have a PhD supervisor whose mentorship transformed my academic experience, says Emma Kathryn White.
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- 2018
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32. An exploration into physician and surgeon data sensemaking: a qualitative systematic review using thematic synthesis
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Emma Whitelock-Wainwright, Jia Wei Koh, Alexander Whitelock-Wainwright, Stella Talic, David Rankin, and Dragan Gašević
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Continued professional development ,Digital health ,Lifelong learning ,Performance reflection ,Physicians and surgeons ,Practice analytics ,Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Abstract Providing electronic health data to medical practitioners to reflect on their performance can lead to improved clinical performance and quality of care. Understanding the sensemaking process that is enacted when practitioners are presented with such data is vital to ensure an improvement in performance. Thus, the primary objective of this research was to explore physician and surgeon sensemaking when presented with electronic health data associated with their clinical performance. A systematic literature review was conducted to analyse qualitative research that explored physicians and surgeons experiences with electronic health data associated with their clinical performance published between January 2010 and March 2022. Included articles were assessed for quality, thematically synthesised, and discussed from the perspective of sensemaking. The initial search strategy for this review returned 8,829 articles that were screened at title and abstract level. Subsequent screening found 11 articles that met the eligibility criteria and were retained for analyses. Two articles met all of the standards within the chosen quality assessment (Standards for Reporting Qualitative Research, SRQR). Thematic synthesis generated five overarching themes: data communication, performance reflection, infrastructure, data quality, and risks. The confidence of such findings is reported using CERQual (Confidence in the Evidence from Reviews of Qualitative research). The way the data is communicated can impact sensemaking which has implications on what is learned and has impact on future performance. Many factors including data accuracy, validity, infrastructure, culture can also impact sensemaking and have ramifications on future practice. Providing data in order to support performance reflection is not without risks, both behavioural and affective. The latter of which can impact the practitioner’s ability to effectively make sense of the data. An important consideration when data is presented with the intent to improve performance. Registration This systematic review was registered with Prospero, registration number: CRD42020197392.
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- 2022
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33. Abstract 4536: Rapid evaporative ionization mass spectrometry (REIMS) analysis of the mucosal lipidome has a high diagnostic accuracy for adenomas and early colorectal cancer
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Sam E Mason, Robert D. Goldin, Afeez Adebesin, James L. Alexander, Petra Paizs, Emma White, James Kinross, Jonathan Hoare, Eftychios Manoli, Zoltan Takats, Zsolt Bodai, and Ara Darzi
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Cancer Research ,medicine.medical_specialty ,Univariate analysis ,medicine.diagnostic_test ,business.industry ,Colorectal cancer ,Cancer ,Colonoscopy ,medicine.disease ,Gastroenterology ,Inflammatory bowel disease ,Familial adenomatous polyposis ,Oncology ,Dysplasia ,Internal medicine ,Medicine ,Adenocarcinoma ,business - Abstract
Introduction The aim of this study was to determine the diagnostic accuracy of REIMS for dysplasia in human adenomas and early colorectal cancer and to determine changes in mucosal lipid chemistry during cancer initiation. Moreover, we attempted to develop a proof of concept first in man study of a novel REIMS-based endoscope for in-vivo chemical phenotyping of adenomas based on the real time analysis of phosphatidic acid (PA) and phosphatidylethanolamine (PE) metabolism. Experimental procedure A prospective, observational cross-sectional cohort study was performed in patients undergoing elective resection for colorectal cancer or colonoscopy at Imperial College London NHS Trust. Two tissue types were obtained - early colorectal cancer (defined as T1 or T2 according to TNMv6 criteria) and adenomatous polyps. Patients with familial adenomatous polyposis, inflammatory bowel disease or hereditary non-polyposis colon cancer were excluded. Specimens were analyzed ex-vivo using a modified electro-surgical hand piece with the aerosol aspirated into a Xevo G2-S QTof mass spectrometer (Waters Corporation). Multivariate analyses were used to create models which underwent cross-validation using SIMCA (V14, Umetrics, Sweden). Characteristic lipid species were identified using univariate statistics in R Studio (V1.0.44) and Metlin. An endoscopic set up was created using a standard endoscope for proof of concept. Summary of data 19 patients (12:7 F:M) were included with a median age of 74 (range 50-92). Six patients had T1/2 adenocarcinoma and 13 had adenomatous polyps. REIMS was able to accurately distinguish the presence of low grade dysplasia (LGD) vs high grade dysplasia (HGD) in adenomatous polyps (sensitivity 95.0%, specificity 100%). Phosphatidic acids (PA) 38:2 and 38:1 were more abundant in high vs low grade dysplasia (p=0.003). REIMS was also able to identify adenomatous polyps from early cancer (sensitivity 100%, specificity 96.3%). Phosphatidylethanolamine (PE) 36:1, phosphatidic acid (PA) 38:1, glucosylceramide (Glc-Cer) 30:1 and ceramide phosphoethanolamines (PE-Cer) d16:1(4E)/20:0 and d14:1(4E)/22:0 were associated with early cancer formation rather than adenomas (p Conclusion Dysplastic adenomas exhibit mucosal lipid chemistry that is discrete from early colorectal cancer. PA, PE and Glc-Cer have potential use as diagnostic biomarkers. First in man studies of the endoscopic application of REIMS suggest it could serve as a real-time tool for early cancer detection based on in vivo analysis of the mucosal lipidome. Citation Format: Petra Paizs, Eftychios Manoli, Sam E. Mason, James L. Alexander, Zsolt Bodai, Emma White, Afeez Adebesin, Jonathan Hoare, Robert Goldin, Ara W. Darzi, James M. Kinross, Zoltan Takats. Rapid evaporative ionization mass spectrometry (REIMS) analysis of the mucosal lipidome has a high diagnostic accuracy for adenomas and early colorectal cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 4536.
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- 2018
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34. Sa1207 - Prospective Observational Cohort Study of Rapid Ionization Mass Spectrometry (Reims) for Near-Real Time Diagnosis and Stratification of Colorectal Cancer
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Emma White, Sam E Mason, James L. Alexander, Afeez Adebesin, Petra Paizs, Zsolt Bodai, Alasdair Scott, Ara Darzi, Jonathan Hoare, Zoltan Takats, James Kinross, Eftychios Manoli, and Robert D. Goldin
- Subjects
Oncology ,medicine.medical_specialty ,Hepatology ,business.industry ,Colorectal cancer ,Internal medicine ,Gastroenterology ,medicine ,Stratification (water) ,Ionization mass spectrometry ,business ,medicine.disease ,Cohort study - Published
- 2018
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35. The Effects of a Community‐Based Multi‐lifestyle Intervention on CV Health in Rural Populations
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Wayne C. Miller, Evan DeVallance, Ashley B Petrone, Carrie Brainard, Kyuwan Lee, Emma White, Paul D. Chantler, Geri Dino, and Sara B. Fournier
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Community based ,business.industry ,Environmental health ,Lifestyle intervention ,Genetics ,Medicine ,Rural area ,business ,Molecular Biology ,Biochemistry ,Rural population ,Biotechnology - Abstract
The rate of cardiovascular diseases (CVD) mortality has decreased over the last few years. However, in rural areas, this reduction is less substantial compared to urban areas despite the effort to ...
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- 2015
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36. Thought Leader Perspectives on the Benefits, Barriers, and Enablers for Routinely Collected Electronic Health Data to Support Professional Development: Qualitative Study
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Bernard Bucalon, Emma Whitelock-Wainwright, Chris Williams, Jeanette Conley, Martin Veysey, Judy Kay, and Tim Shaw
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Computer applications to medicine. Medical informatics ,R858-859.7 ,Public aspects of medicine ,RA1-1270 - Abstract
BackgroundHospitals routinely collect large amounts of administrative data such as length of stay, 28-day readmissions, and hospital-acquired complications; yet, these data are underused for continuing professional development (CPD). First, these clinical indicators are rarely reviewed outside of existing quality and safety reporting. Second, many medical specialists view their CPD requirements as time-consuming, having minimal impact on practice change and improving patient outcomes. There is an opportunity to build new user interfaces based on these data, designed to support individual and group reflection. Data-informed reflective practice has the potential to generate new insights about performance, bridging the gap between CPD and clinical practice. ObjectiveThis study aims to understand why routinely collected administrative data have not yet become widely used to support reflective practice and lifelong learning. MethodsWe conducted semistructured interviews (N=19) with thought leaders from a range of backgrounds, including clinicians, surgeons, chief medical officers, information and communications technology professionals, informaticians, researchers, and leaders from related industries. Interviews were thematically analyzed by 2 independent coders. ResultsRespondents identified visibility of outcomes, peer comparison, group reflective discussions, and practice change as potential benefits. The key barriers included legacy technology, distrust with data quality, privacy, data misinterpretation, and team culture. Respondents suggested recruiting local champions for co-design, presenting data for understanding rather than information, coaching by specialty group leaders, and timely reflection linked to CPD as enablers to successful implementation. ConclusionsOverall, there was consensus among thought leaders, bringing together insights from diverse backgrounds and medical jurisdictions. We found that clinicians are interested in repurposing administrative data for professional development despite concerns with underlying data quality, privacy, legacy technology, and visual presentation. They prefer group reflection led by supportive specialty group leaders, rather than individual reflection. Our findings provide novel insights into the specific benefits, barriers, and benefits of potential reflective practice interfaces based on these data sets. They can inform the design of new models of in-hospital reflection linked to the annual CPD planning-recording-reflection cycle.
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- 2023
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37. Local Side Effects of Subcutaneous and Intramuscular Urinary Gonadotropins for Ovarian Stimulation in In Vitro Fertilization: A Prospective, Randomized Study
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Seang Lin Tan, Howard S. Jacobs, Emma White, Lawrence Engmann, Adel G. Shaker, and Jinan Bekir
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Adult ,medicine.medical_specialty ,Menotropins ,Randomization ,Adolescent ,Side effect ,medicine.drug_class ,Injections, Subcutaneous ,Urinary system ,medicine.medical_treatment ,Fertilization in Vitro ,Injections, Intramuscular ,Humans ,Medicine ,Prospective Studies ,In vitro fertilisation ,business.industry ,Incidence (epidemiology) ,Ovary ,Obstetrics and Gynecology ,Fertility Agents, Female ,Surgery ,Reproductive Medicine ,Anesthesia ,Toxicity ,Itching ,Female ,medicine.symptom ,Gonadotropin ,business - Abstract
Objective: To compare the incidence and severity of local side effects of urinary-derived gonadotropins administered SC and IM. Design: Prospective randomized study of women undergoing IVF treatment. Setting: Tertiary referral center for assisted reproduction. Patient(s): A total of 71 patients were randomized to receive gonadotropins by the SC (n = 41) or IM (n = 30) route. Intervention(s): One cycle of IVF with gonadotropins administered either SC or IM for ovarian stimulation. Main Outcome Measure(s): Incidence and severity of local side effects, such as redness, itching, swelling, pain, and bruising. Result(s): Pain was the most common side effect, with 55.3% and 70.1% of IM and SC injections, respectively, resulting in pain. There were no statistically significant differences in the incidence of itching or bruising after IM and SC injections. Although there was a higher incidence of redness and swelling in the SC group compared with the IM group, most cases were classified as mild. Conclusion(s): There was a significantly higher incidence of some local side effects after SC gonadotropin administration but most of these were mild and well tolerated by patients.
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- 1998
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38. Building a Strong Foundation: Overcoming Obstacles in Applied Health Systems Research Through a Collaborative Approach From Funders
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Jacinta Colley, Sanjoti Parekh, Emma Whitehead, and Rachel Cole
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Medicine (General) ,R5-920 ,Public aspects of medicine ,RA1-1270 - Published
- 2022
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39. SURG-31. INTRAOPERATIVE MOLECULAR DIAGNOSIS AND SURGICAL GUIDANCE USING iKNIFE REAL-TIME MASS SPECTROMETRY
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Dieter Galea, Ho Hui-Yu, Babar Vaqas, Kevin O’Neill, Emma White, Julia Balog, and Zoltan Takats
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0301 basic medicine ,03 medical and health sciences ,Cancer Research ,030104 developmental biology ,Oncology ,business.industry ,Medicine ,Neurology (clinical) ,Iknife ,Nuclear medicine ,business ,Mass spectrometry - Published
- 2016
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40. Nuclear magnetic resonance structure and dynamics of the response regulator Sma0114 from Sinorhizobium meliloti
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Victoria L. Robinson, Emma White, Sarah R. Sheftic, Daniel J. Gage, Preston P. Garcia, and Andrei T. Alexandrescu
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Models, Molecular ,Rossmann fold ,Sinorhizobium meliloti ,Protein Folding ,biology ,Histidine Kinase ,Protein Conformation ,biology.organism_classification ,Biochemistry ,Article ,Protein Structure, Tertiary ,Response regulator ,Protein structure ,Nuclear magnetic resonance ,Catalytic Domain ,Helix ,Protein folding ,Calcium ,Magnesium ,Sequence motif ,Protein secondary structure ,Nuclear Magnetic Resonance, Biomolecular ,Protein Kinases ,Phylogeny - Abstract
Receiver domains control intracellular responses triggered by signal transduction in bacterial two-component systems. Here, we report the solution nuclear magnetic resonance structure and dynamics of Sma0114 from the bacterium Sinorhizobium meliloti, the first such characterization of a receiver domain from the HWE-kinase family of two-component systems. The structure of Sma0114 adopts a prototypical α(5)/β(5) Rossman fold but has features that set it apart from other receiver domains. The fourth β-strand of Sma0114 houses a PFxFATGY sequence motif, common to many HWE-kinase-associated receiver domains. This sequence motif in Sma0114 may substitute for the conserved Y-T coupling mechanism, which propagates conformational transitions in the 455 (α4-β5-α5) faces of receiver domains, to prime them for binding downstream effectors once they become activated by phosphorylation. In addition, the fourth α-helix of the consensus 455 face in Sma0114 is replaced with a segment that shows high flexibility on the pico- to nanosecond time scale by (15)N relaxation data. Secondary structure prediction analysis suggests that the absence of helix α4 may be a conserved property of the HWE-kinase-associated family of receiver domains to which Sma0114 belongs. In spite of these differences, Sma0114 has a conserved active site, binds divalent metal ions such as Mg(2+) and Ca(2+) that are required for phosphorylation, and exhibits micro- to millisecond active-site dynamics similar to those of other receiver domains. Taken together, our results suggest that Sma0114 has a conserved active site but differs from typical receiver domains in the structure of the 455 face that is used to effect signal transduction following activation.
- Published
- 2012
41. A multilocus sequence analysis approach to the phylogeny and taxonomy of the Halobacteriales
- Author
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Antonio Ventosa, Masahiro Kamekura, R. Thane Papke, Prajwal Reddy, Griffin Weigel, Emma White, Ron Usami, and Hiroaki Minegishi
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Halobacteriales ,Genetics ,DNA, Bacterial ,biology ,Sequence analysis ,Molecular Sequence Data ,General Medicine ,Ribosomal RNA ,biology.organism_classification ,16S ribosomal RNA ,Microbiology ,DNA, Ribosomal ,Bacterial Typing Techniques ,Phylogenetics ,Genetic marker ,Evolutionary biology ,Horizontal gene transfer ,Taxonomy (biology) ,Ecology, Evolution, Behavior and Systematics ,Phylogeny ,Multilocus Sequence Typing - Abstract
Members of the orderHalobacterialesare obligate extreme halophiles that belong to the domainArchaea. The classification of theHalobacterialescurrently relies on a polyphasic approach, which integrates phenotypic, genotypic and chemotaxonomic characterization. However, the most utilized genetic marker for phylogeny, the 16S rRNA gene, has multiple drawbacks for use with theHalobacteriales: the species of many genera exhibit large intragenic differences between multiple ribosomal RNA operons, the gene is too conserved to discriminate reliably at the species level and it appears to be the most frequently recombined gene between closely related species. Moreover, theHalobacterialesis a rapidly expanding group due to recent successes at cultivating novel strains from a diverse set of hypersaline environments; a fast, reliable, inexpensive, portable molecular method for discriminating species is required for their investigation. Recently, multilocus sequence analysis (MLSA) has been shown to be an effective tool for strain identification and taxonomic designation, even for those taxa that experience frequent lateral gene transfer and homologous recombination. In this study, MLSA was utilized for evolutionary and taxonomic investigation of theHalobacteriales. Efficacy of the MLSA approach was tested across a hierarchical gradient using 52 halobacterial strains, representing 33 species (including names without standing in nomenclature) and 14 genera. A subset of 21 strains from the genusHaloarculawas analysed separately to test the sensitivity and relevance of the MLSA approach among closely related strains and species. The results demonstrated that MLSA differentiated individual strains, reliably grouped strains into species and species into genera and identified potential novel species and also family-like relationships. This study demonstrates that MLSA is a rapid and informative molecular method that will probably accommodate strain analysis at any taxonomic level within theHalobacteriales.
- Published
- 2011
42. First estimates of age, growth, and maturity of boarfish (capros aper): a species newly exploited in the northeast atlantic
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Cóilín Minto, Erna King, Emma White, Eugene Mullins, Maurice Clarke, and Conor P. Nolan
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0106 biological sciences ,Maturity (geology) ,Ecology ,sea ,010604 marine biology & hydrobiology ,growth ,Aquatic Science ,Biology ,pelagic ,Oceanography ,010603 evolutionary biology ,01 natural sciences ,mortality ,caproidea ,long-term changes ,age ,14. Life underwater ,maturity ,fish community ,Ecology, Evolution, Behavior and Systematics - Abstract
This is a pre-copy-editing, author-produced PDF of an article accepted for publication in ICES Journal of Marine Science following peer review. The definitive publisher-authenticated version “White, E., Minto, C., Nolan, C. P., King, E., Mullins, E., and Clarke, M. 2011. First estimates of age, growth, and maturity of boarfish (Capros aper): a species newly exploited in the Northeast Atlantic. – ICES Journal of Marine Science, 68: 61–66” is available online at: http://icesjms.oxfordjournals.org/content/68/1/61, peer-reviewed, Boarfish in the Northeast Atlantic have recently been exploited commercially for fishmeal. It is a sexually dimorphic species with an estimated maximum age of 26 years, late age at maturity (A50 = 5.25 years), relatively fast rate of growth (K = 0.186 year−1), and a small asymptotic length (L∞ = 128.9 mm).
- Published
- 2010
43. Does Inclusion of Dairy Foods in a Moderate Energy Restricted Diet Enhance Central Fat and Weight Loss in Overweight and Obese Adults?
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Karin Schaal, William F. Horn, Megan G. Witbracht, Nancy L. Keim, Dustin J. Burnett, Marta D. Van Loan, Caitlin Campbell, Evelyn Holguin, Carol J. Chandler, Mary Gustafson, Brian D. Piccolo, Elaine C. Souza, Leslie R. Woodhouse, Sara Stoffel, Anthony P. Thomas, Andrew A. Bremer, Julie Watson, Emma White, Sean H. Adams, Erik R. Gertz, and Ellen L. Bonnel
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business.industry ,Overweight ,Biochemistry ,Animal science ,Weight loss ,Genetics ,medicine ,Restricted diet ,medicine.symptom ,business ,Molecular Biology ,Inclusion (education) ,Dairy foods ,Biotechnology - Published
- 2010
- Full Text
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44. Understanding job satisfaction amongst mid-level cadres in Malawi: the contribution of organisational justice
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Emma White, OU Manafa, Fresier Maseko, Cameron Bowie, and Eilish McAuliffe
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Adult ,Male ,Malawi ,Attitude of Health Personnel ,media_common.quotation_subject ,Job description ,Allied Health Personnel ,Developing country ,Job Satisfaction ,Young Adult ,Promotion (rank) ,Resource (project management) ,Nursing ,Social Justice ,Surveys and Questionnaires ,Medicine ,Humans ,Justice (ethics) ,media_common ,business.industry ,Obstetrics and Gynecology ,Public relations ,Middle Aged ,Reproductive Medicine ,Human resource management ,Job satisfaction ,Female ,business ,Career development - Abstract
The migration of doctors and nurses from low- to high-income countries has left many countries relying on mid-level cadres as the mainstay of their health delivery system, Malawi being an example. Although an extremely important resource, little attention has been paid to the management and further development of these cadres. In this paper we use the concept of organisational justice – fairness of treatment, procedures and communication on the part of managers – to explore through a questionnaire how mid-level cadres in jobs traditionally done by higher-level cadres self-assessed their level of job satisfaction. All mid-level health workers present on the day of data collection in 34 health facilities in three health districts of Malawi, one district each from the three geographical regions, were invited to participate; 126 agreed. Perceptions of justice correlated strongly with level of job satisfaction, and in particular perceptions of how well they were treated by their managers and the extent to which they were informed about decisions and changes. Pay was not the only important element in job satisfaction; promotion opportunities and satisfaction with current work assignments were also significant. These findings highlight the important role that managers can play in the motivation, career development and performance of mid-level health workers.
- Published
- 2009
45. Comparison Of The FMS And Y-balance Scores In Collegiate Athletes
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Daniel Metzger, Emma White, Audrey L. Millar, Sarah Eidson, and Kristopher Williams
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medicine.medical_specialty ,biology ,Athletes ,Physical therapy ,medicine ,Physical Therapy, Sports Therapy and Rehabilitation ,Orthopedics and Sports Medicine ,biology.organism_classification ,Psychology ,Balance (ability) - Published
- 2014
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46. Ordinary Differential Equation Models of Opiate-Use: The Treatment-Relapse Cycle and HIV Infection
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Emma White
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Oncology ,medicine.medical_specialty ,business.industry ,Internal medicine ,Ordinary differential equation ,medicine ,Human immunodeficiency virus (HIV) ,Opiate ,Treatment relapse ,medicine.disease_cause ,business - Published
- 2007
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47. Leveraging Language: Preliminary evidence from a language-based intervention at the University of Cape Town
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Emma Whitelaw, Tessa Dowling, and Samantha Filby
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Education (General) ,L7-991 - Abstract
This paper assesses the effectiveness of essay tutorials offered to first-year economics students at the UCT (University of Cape Town) in their first language (L1). All students in the study are first-language speakers of an African language. Firstly, using propensity score matching, we econometrically assess the impact of these tutorials on students’ essay marks. Although our sample size is small [n=220], our findings provide preliminary evidence of a positive impact of the intervention on a student’s final essay mark. The results show that the average gain for students who attended an essay tutorial in their L1 was 4.85%, with this result being statistically significant at the 10% significance level. Secondly, students’ perceptions of the tutorials’ effectiveness, as documented by online evaluations and focus groups, are examined. These findings suggest that allowing for unmediated L1 use in tertiary education classrooms can foster inclusivity and promote participation in otherwise largely monolingual spaces.
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- 2019
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48. Frontline community health care workers’ intervention for diabetes management in resource limited settings: a qualitative study on perspectives of key stakeholders
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Amudha Poobalan, Emma Whiteley, Bhavya Balsubramanya, Sam Philip, Paul Jebaraj, Balaji BV, Oommen John, Nihal Thomas, Prakash Abraham, and Rita Isaac
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Public aspects of medicine ,RA1-1270 - Abstract
# Background Diabetes mellitus (DM) is a global public health concern, with significant increase in the transitioning low- and middle-income countries (LMICs), such as India, with limited resources and poor health care systems. Recognising the need for innovative, feasible, targeted interventions for diabetes care, a non-randomized, controlled, phase II clinical trial was conducted in a rural revenue block in Tamil Nadu, India. This pilot trial tested the non-inferiority of the trained community health workers (CHWs) in delivering education, screening for diabetes complications using a protocol-based referral for physician consultation for management, assisted by an android application (App) for patient tracking. Understanding the perceptions of key stakeholders including patients and health workers is crucial for upscaling and sustaining these novel interventions for diabetes care. This study explored the perspectives and views of patients with DM and diabetes CHWs who participated in the pilot trial. # Methods Using qualitative research methodology, individual in-depth interviews were conducted in the local vernacular (Tamil) language among the two diabetes CHWs and purposively chosen 24 patients until the data saturation was reached. Participant information sheets, consent forms and a detailed topic guide were developed. Interviews were transcribed verbatim, translated into English and thematic analysis was conducted. # Results Five main themes emerged during interviews with diabetes CHWs: deeper understanding of the disease; belonging and strengthening; ease of use of digital technology and a timesaver for patient tracking; cultural sensitivity; stigma and change in attitudes over time. Interviews with patients highlighted four major themes: convenience; cost reduction; improved knowledge and perceptions on health. Benefits were perceived by both patients and diabetes CHWs, in the domains of convenience, access, cost and knowledge. Perceptions of changes in health were mixed with room for improvement in the digital App. # Conclusions Training CHWs in resource limited settings in supporting community diabetes care, assisted by digital technology for tracking is acceptable to the patients and will help shift the care pathway for Diabetes closer to the patients in a rural setting. This qualitative study identified a number of areas for improvement and potential barriers that will need to be addressed prior to scaling up in similar resource constrained settings.
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- 2021
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49. ABS001: Postal questionnaires for asthma — are they worth the paper they are written on?
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Emma White and Daryl Freeman
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,education.field_of_study ,business.industry ,Inhaler ,Population ,Public Health, Environmental and Occupational Health ,Audit ,medicine.disease ,respiratory tract diseases ,Abstracts ,Poor control ,Family medicine ,Asthma control ,Cohort ,Medicine ,Smoking status ,business ,education ,Asthma - Abstract
INTRODUCTION: In April 2004 British General Practitioners started to work under a “new contract”, known as GMS2. This encouraged more formal review of many conditions including asthma. AIMS & OBJECTIVES: The questionnaires would enable us to identify patients willing to have telephone reviews of their asthma, those well controlled, and those with poor control. The questionnaires have allowed us to audit our asthma care over a 10 month period. SUBJECT & METHODS: The patients were identified using our clinical software, and were those who had not attended asthma review in the preceding 12 months. The questionnaires asked about smoking status, telephone reviews, and asthma control. The first cohort was posted in February 2005, and in October 2005 we sent out the same questionnaires to another cohort of “non-attenders”. RESULTS: 199 questionnaires received in February, 120 in October. Overall asthma control was good. From the first set of questionnaires (n= 199, all figure relate to 3 or more times per week), 7.5% were woken; 8.5% had their normal activities disturbed; 28% had their normal asthma symptoms; 22% used their reliever inhaler; 84% were non smokers. October 2005 n= 120, these figures were similar, again all figures relate to >3 times in the previous week; woken at night 7.5%; activities disturbed 10%; asthma symptoms 25%; use of blue inhaler 24%; 80% were non smokers. CONCLUSIONS: The questionnaires provided a snapshot of asthma control in the practice population and were easy and inexpensive to perform. It is rewarding that we have less people who have not had a review, but overall asthma control has not changed. In the future those with poor control should probably be chased more actively, perhaps by their doctor, rather than simply by the administrative staff. Conflict of interest and funding No conflict of interest was declared. Postage for the first (February 2005) questionnaires was kindly supported by AstraZeneca.
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- 2006
- Full Text
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50. Reproducibility of Molecular Phenotypes after Long-Term Differentiation to Human iPSC-Derived Neurons: A Multi-Site Omics Study
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Viola Volpato, James Smith, Cynthia Sandor, Janina S. Ried, Anna Baud, Adam Handel, Sarah E. Newey, Frank Wessely, Moustafa Attar, Emma Whiteley, Satyan Chintawar, An Verheyen, Thomas Barta, Majlinda Lako, Lyle Armstrong, Caroline Muschet, Anna Artati, Carlo Cusulin, Klaus Christensen, Christoph Patsch, Eshita Sharma, Jerome Nicod, Philip Brownjohn, Victoria Stubbs, Wendy E. Heywood, Paul Gissen, Roberta De Filippis, Katharina Janssen, Peter Reinhardt, Jerzy Adamski, Ines Royaux, Pieter J. Peeters, Georg C. Terstappen, Martin Graf, Frederick J. Livesey, Colin J. Akerman, Kevin Mills, Rory Bowden, George Nicholson, Caleb Webber, M. Zameel Cader, and Viktor Lakics
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Medicine (General) ,R5-920 ,Biology (General) ,QH301-705.5 - Abstract
Summary: Reproducibility in molecular and cellular studies is fundamental to scientific discovery. To establish the reproducibility of a well-defined long-term neuronal differentiation protocol, we repeated the cellular and molecular comparison of the same two iPSC lines across five distinct laboratories. Despite uncovering acceptable variability within individual laboratories, we detect poor cross-site reproducibility of the differential gene expression signature between these two lines. Factor analysis identifies the laboratory as the largest source of variation along with several variation-inflating confounders such as passaging effects and progenitor storage. Single-cell transcriptomics shows substantial cellular heterogeneity underlying inter-laboratory variability and being responsible for biases in differential gene expression inference. Factor analysis-based normalization of the combined dataset can remove the nuisance technical effects, enabling the execution of robust hypothesis-generating studies. Our study shows that multi-center collaborations can expose systematic biases and identify critical factors to be standardized when publishing novel protocols, contributing to increased cross-site reproducibility. : In this article, Lakics and colleagues show that, while individual laboratories are able to identify consistent molecular and seemingly statistically robust differences between iPSC neuronal models, cross-site reproducibility is poor. Their findings support multi-center collaborations to expose systematic biases and identify critical factors to be standardized to improve reproducibility in iPSC-based molecular experiments. Keywords: induced pluripotent stem cell, reproducibility, cross-site experimental variation, cortical neurons, gene expression profile, proteomic profiles, single-cell sequencing, molecular profiling, stembancc, public-private partnership
- Published
- 2018
- Full Text
- View/download PDF
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