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Dong-Sing Wuu, Sin-Liang Ou, Ching-Ho Tien
In conventional emitting devices, the mobility of electron is much higher than that of hole, which increases the non-recombination rate. To generate slow electrons, we demonstrate an electron retarding n-electrode (ERN) on the n-GaN layer of InGaN blue light emitting diode (LED), making more efficient radiation emission. Transparent conductive oxides are estimated to be more suitable for ERN materials. However, for ERN materials used in InGaN LEDs, three requirements should be satisfied, i.e., Ohmic contact to n-GaN, dilute magnetic doping, and good electrical conductivity...
March 20, 2018: Scientific Reports
Hongyan Yu, Esther Ern-Hwei Chan, Pravin Lingam, Jingwen Lee, Winston Wei Liang Woon, Jee Keem Low, Vishal G Shelat
Backgrounds/Aims: Previous studies have evaluated quality of life (QoL) in patients who underwent laparoscopic cholecystectomy (LC) for cholelithiasis. The purpose of this study was to evaluate QoL after index admission LC in patients diagnosed with acute cholecystitis (AC) using the Gastrointestinal Quality of Life Index (GIQLI) questionnaire. Methods: Patients ≥21 years admitted to Tan Tock Seng Hospital, Singapore for AC and who underwent index admission LC between February 2015 and January 2016 were evaluated using the GIQLI questionnaire preoperatively and 30 days postoperatively...
February 2018: Annals of Hepato-Biliary-Pancreatic Surgery
G N Cagatay, A Antos, D Meyer, C Maistrelli, O Keuling, P Becher, A Postel
The recently identified atypical porcine pestivirus (APPV) was demonstrated to be the causative agent of the neurological disorder "congenital tremor" in newborn piglets. Despite its relevance and wide distribution in domestic pigs, so far nothing is known about the situation in wild boar, representing an important wild animal reservoir for the related classical swine fever virus. In this study, 456 wild boar serum samples obtained from northern Germany were investigated for the presence of APPV genomes and virus-specific antibodies...
March 12, 2018: Transboundary and Emerging Diseases
Nicola Nicolai, Davide Biasoni, Mario A Catanzaro, Maurizio Colecchia, Annalisa Trama
Germ-cell tumours (GCT) of the testis and penile squamous cell carcinoma (PeSCC) are a rare and a very rare uro-genital cancers, respectively. Both tumours are well defined entities in terms of management, where specific recommendations - in the form of continuously up-to-dated guide lines-are provided. Impact of these tumour is relevant. Testicular GCT affects young, healthy men at the beginning of their adult life. PeSCC affects older men, but a proportion of these patients are young and the personal consequences of the disease may be devastating...
February 14, 2018: European Journal of Surgical Oncology
S Mathoulin-Pélissier, K Pritchard-Jones
Rare cancers are not so rare, their incidence is increasing and, as a group, they have worse survival than the common cancers. These factors emphasise the societal need to ensure sufficient focus on research into their biological basis, aetiological factors, new more effective therapies and organisation of healthcare to improve access to best practice and innovation. Accuracy of diagnosis is one of the first hurdles to be overcome, with around one third of tumours being reclassified - by type or risk group - when subject to a centralised pathology review process...
March 2, 2018: European Journal of Surgical Oncology
S Löw, C K Spies, F Unglaub, J Oppermann, M Langer, H Erne
BACKGROUND: The triangular fibrocartilage complex (TFCC) widens the radiocarpal joint and takes part in load transmission from the carpus to the forearm. It is thereby prone to degenerative changes. The painful situation that can accompany degeneration is called ulnar impaction. DIAGNOSIS: Clinical examination helps differentiate between various causes of ulnar-sided wrist pain. Standard X‑rays are needed to determine ulnar variance and stress radiographs can depict narrowing of the ulnocarpal joint space under load...
March 9, 2018: Der Orthopäde
Yi Ern Cheah, Jamey D Young
Typically,13 C flux analysis relies on assumptions of both metabolic and isotopic steady state. If metabolism is steady but isotope labeling is not allowed to fully equilibrate, isotopically nonstationary metabolic flux analysis (INST-MFA) can be used to estimate fluxes. This requires solution of differential equations that describe the time-dependent labeling of network metabolites, while iteratively adjusting the flux and pool size parameters to match the transient labeling measurements. INST-MFA holds a number of unique advantages over approaches that rely solely upon steady-state isotope enrichments...
March 6, 2018: Current Opinion in Biotechnology
Carlo Castellani, Alistair J A Duff, Scott C Bell, Harry G M Heijerman, Anne Munck, Felix Ratjen, Isabelle Sermet-Gaudelus, Kevin W Southern, Jurg Barben, Patrick A Flume, Pavla Hodková, Nataliya Kashirskaya, Maya N Kirszenbaum, Sue Madge, Helen Oxley, Barry Plant, Sarah Jane Schwarzenberg, Alan R Smyth, Giovanni Taccetti, Thomas O F Wagner, Susan P Wolfe, Pavel Drevinek
Developments in managing CF continue to drive dramatic improvements in survival. As newborn screening rolls-out across Europe, CF centres are increasingly caring for cohorts of patients who have minimal lung disease on diagnosis. With the introduction of mutation-specific therapies and the prospect of truly personalised medicine, patients have the potential to enjoy good quality of life in adulthood with ever-increasing life expectancy. The landmark Standards of Care published in 2005 set out what high quality CF care is and how it can be delivered throughout Europe...
March 2, 2018: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
Sinead Marie O'Donovan, Courtney Sullivan, Rachael Koene, Emily Devine, Kathryn Hasselfeld, Cassidy Lynn Moody, Robert Erne McCullumsmith
Prior work in animal models implicates abnormalities of adenosine metabolism in astrocytes as a possible pathophysiological mechanism underlying the symptoms of schizophrenia. In the present study, we sought to reverse-translate these findings back to the human brain in schizophrenia, focusing on the following questions: (1) Which components of the adenosine system are dysregulated in schizophrenia, and (2) are these changes limited to astrocytes? To address these questions, we captured enriched populations of DLPFC pyramidal neurons and astrocytes from schizophrenia and control subjects using laser capture microdissection and assessed expression of adenosine system components using qPCR...
February 26, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
Bernhard Rauer, Sebastian Erne, Thomas Schweigler, Federica Cataldini, Mohammadamin Tajik, Jörg Schmiedmayer
The complexity of interacting quantum many-body systems leads to exceedingly long recurrence times of the initial quantum state for all but the smallest systems. For large systems, one cannot probe the full quantum state in all its details. Thus, experimentally, recurrences can only be determined on the level of the accessible observables. Realizing a commensurate spectrum of collective excitations in one-dimensional superfluids, we demonstrate recurrences of coherence and long range order in an interacting quantum many-body system containing thousands of particles...
February 22, 2018: Science
Ameeta Retzer, Thomas Keeley, Khaled Ahmed, Jo Armes, Julia M Brown, Lynn Calman, Chris Copland, Fabio Efficace, Anna Gavin, Adam Glaser, Diana M Greenfield, Anne Lanceley, Rachel M Taylor, Galina Velikova, Michael Brundage, Rebecca Mercieca-Bebber, Madeleine T King, Melanie Calvert, Derek Kyte
INTRODUCTION: Patient-reported outcomes (PROs) are increasingly included within cancer clinical trials. If appropriately collected, analysed and transparently reported, these data might provide invaluable evidence to inform patient care. However, there is mounting indication that the design and reporting of PRO data in cancer trials may be suboptimal. This programme of research will establish via three interlinked studies whether these findings are applicable to UK cancer trials, and if so, how to best enhance the way PROs are assessed, managed and reported in clinical trials...
February 3, 2018: BMJ Open
Meihui Xu, Roland Zuest, Sumathy Velumani, Farhana Tukijan, Ying Xiu Toh, Ramapraba Appanna, Ern Yu Tan, Daniela Cerny, Paul MacAry, Cheng-I Wang, Katja Fink
[This corrects the article DOI: 10.1038/s41541-016-0003-3.].
2018: NPJ Vaccines
Shih-Ern Yao, Tom Manolitsas
Minimally invasive platforms have afforded women undergoing hysterectomy the advantages of improved postoperative pain control, reduced complication rates, and shorter inpatient recovery time. In patients where malignancy has been confirmed or suspected, the necessity for uterine delivery per vagina is imperative to maintain these advantages without compromising oncological outcome.A previously unreported technique of enlarging the apical circumference of the vagina during robotic hysterectomy facilitates intact uterine passage after extended reflection of the bladder and/or rectum...
February 8, 2018: International Journal of Gynecological Cancer
Agne Frismantiene, Maria Philippova, Paul Erne, Therese J Resink
Vascular smooth muscle cells (SMCs) phenotypes span a reversible continuum from quiescent/contractile (differentiated) to proliferative/synthetic (dedifferentiated) enabling them to perform a diversity of functions that are context-dependent and important for vascular tone-diameter homeostasis, vasculogenesis, angiogenesis or vessel reparation after injury. Dysregulated phenotype modulation and failure to maintain/regain the mature differentiated and contractile phenotypic state is pivotal in the development of vascular diseases such as atherosclerosis and restenosis after angioplasty and coronary bypass grafting...
January 30, 2018: Cellular Signalling
Francesco Di Gregorio, Martin E Maier, Marco Steinhauser
Errors in human behavior elicit a cascade of brain activity related to performance monitoring and error detection. Whereas the early error-related negativity (Ne/ERN) has been assumed to reflect a fast mismatch or prediction error signal in the medial frontal cortex, the later error positivity (Pe) is viewed as a correlate of conscious error processing. A still open question is whether these components represent two independent systems of error monitoring that rely on different types of information to detect an error...
January 30, 2018: NeuroImage
James D Otvos, John R Guyton, Margery A Connelly, Sydney Akapame, Vera Bittner, Steven L Kopecky, Megan Lacy, Santica M Marcovina, Joseph B Muhlestein, William E Boden
BACKGROUND: The Atherothrombosis Intervention in Metabolic Syndrome with Low HDL/High Triglycerides and Impact on Global Health Outcomes trial showed no incremental benefit of extended-release niacin (ERN) therapy added to simvastatin in subjects with cardiovascular disease (CVD). OBJECTIVES: To examine the effects of ERN treatment on lipoprotein particles and GlycA, a new marker of systemic inflammation, and their relations with incident CVD events including mortality...
January 12, 2018: Journal of Clinical Lipidology
Lucien Eggimann, Steffen Blum, Stefanie Aeschbacher, Andreas Reusser, Peter Ammann, Paul Erne, Giorgio Moschovitis, Marcello Di Valentino, Dipen Shah, Jürg Schläpfer, Nadine Mondet, Michael Kühne, Christian Sticherling, Stefan Osswald, David Conen
BACKGROUND: Patients with atrial fibrillation (AF) have an increased risk for the development of heart failure (HF). In this study, we aimed to detect predictors of HF hospitalizations in an unselected AF population. METHODS: The Basel Atrial Fibrillation Cohort Study is an ongoing observational multicenter cohort study in Switzerland. For this analysis, 1193 patients with documented AF underwent clinical examination, venous blood sampling and resting 12-lead ECG at baseline...
2018: PloS One
M Simó, A Gurtubay-Antolin, L Vaquero, J Bruna, A Rodríguez-Fornells
No previous event-related potentials (ERPs) study has explored the error-related negativity (ERN) - an ERP component indexing performance monitoring - associated to cancer and chemotherapy-induced cognitive impairment in a lung cancer population. The aim of this study was to examine differences in performance monitoring in a small-cell lung cancer group (SCLC, C +) 1-month following chemotherapy and two control groups: a non-small cell lung cancer patient group (NSCLC, C -) prior to chemotherapy and a healthy control group (HC)...
2018: NeuroImage: Clinical
Duru Gun Ozkan, Rachele Pezzetta
Error-related Negativity (ERN) is a signal that is associated with error detection. Joch and colleagues (Journal of Neurophysiology 118:486-495, 2017) successfully separated the ERN as a response to online prediction error from feedback updates. We discuss the role of ERN in action, and suggest insights from VR techniques; we consider the potential benefit of self-evaluation in determining the mechanisms of ERN amplitude; finally we review the oscillatory activity that has been claimed to accompany ERN.
December 20, 2017: Journal of Neurophysiology
Ryan L Olson, Christopher J Brush, Peter J Ehmann, Jennifer F Buckman, Brandon L Alderman
Previous research has demonstrated long-term deficits in neurocognitive function in individuals with a history of sport-related concussion. The purpose of this study was to examine the relationship between a history of concussion and behavioral and event-related potential (ERP) indices of pre- and post-response conflict and error monitoring. A secondary aim was to determine whether years of high risk sport participation were related to impairments in these cognitive control processes. Forty-seven former athletes (age = 20...
January 18, 2018: International Journal of Psychophysiology
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