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Forgrave R, Donaghy J, Fisher A, Rowe M. Survival kinetics of Mycobacterium bovis
during manufacture and ripening of raw milk Cheddar and Caerphilly cheese produced on a laboratory-scale. J Appl Microbiol 2016; 121:1457-1468. [DOI: 10.1111/jam.13278] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 08/05/2016] [Accepted: 08/22/2016] [Indexed: 10/21/2022]
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77
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Cheng D, Wu D, Xu H, Fisher A. Composition-controlled Synthesis of PtCuNPs Shells on Copper Nanowires as Electrocatalysts. ChemistrySelect 2016. [DOI: 10.1002/slct.201600562] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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78
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Jensen B, Fisher A, Gibby J, Kaltman S. The New Paradigm in Medical Modeling: Utilizing Consumer-Level Desktop 3D Printers. J Oral Maxillofac Surg 2016. [DOI: 10.1016/j.joms.2016.06.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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79
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Yu H, Fisher A, Cheng D, Cao D. Cu,N-codoped Hierarchical Porous Carbons as Electrocatalysts for Oxygen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21431-21439. [PMID: 27490846 DOI: 10.1021/acsami.6b04189] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
It remains a huge challenge to develop nonprecious electrocatalysts with high activity to substitute commercial Pt catalysts for oxygen reduction reactions (ORR). Here, the Cu,N-codoped hierarchical porous carbon (Cu-N-C) with a high content of pyridinic N was synthesized by carbonizing Cu-containing ZIF-8. Results indicate that Cu-N-C shows excellent ORR electrocatalyst properties. First of all, it nearly follows the four-electron route, and its electron transfer number reaches 3.92 at -0.4 V. Second, both the onset potential and limited current density of Cu-N-C are almost equal to those of a commercial Pt/C catalyst. Third, it exhibits a better half-wave potential (∼16 mV) than a commercial Pt/C catalyst. More importantly, the Cu-N-C displays better stability and methanol tolerance than the Pt/C catalyst. All of these good properties are attributed to hierarchical structure, high pyridinic N content, and the synergism of Cu and N dopants. The metal-N codoping strategy can significantly enhance the activity of electrocatalysts, and it will provide reference for the design of novel N-doped porous carbon ORR catalysts.
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80
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Liu X, Dai C, Wu D, Fisher A, Liu Z, Cheng D. Facile Synthesis of PdAgCo Trimetallic Nanoparticles for Formic Acid Electrochemical Oxidation. CHEM LETT 2016. [DOI: 10.1246/cl.160243] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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81
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Heinrich M, Fisher A, Paton B, McCourt O, Beeken RJ, Hackshaw A, Wardle J, Yong K. Lifestyle in Multiple Myeloma - a longitudinal cohort study protocol. BMC Cancer 2016; 16:387. [PMID: 27377407 PMCID: PMC4932746 DOI: 10.1186/s12885-016-2407-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 06/17/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Deterioration in bone health is one of the presenting symptoms of Multiple Myeloma (MM), a cancer of plasma cells. As a consequence of this condition, patients suffer bone pain and bone damage and report cancer-related fatigue, resulting in deterioration in their quality of life. Evidence in patients with solid tumours shows promise for the positive effects of physical activity on quality of life. However, in the case of patients with MM a better understanding of the association between physical fitness and quality of life factors is still required. Therefore, this cohort study aims to objectively and longitudinally assess activity and fitness levels in patients with MM in order to explore their role in bone health, fatigue and quality of life for this patient population. METHODS/DESIGN The study is a prospective cohort study of MM patients in remission to assess physical activity, fatigue and bone health. Clinical markers of health, self-reported measures of psychological and physical well-being, and lifestyle behaviours are assessed at baseline, 3, 6 and 12 months. At each time point, patients complete cardiopulmonary exercise testing (CPET) along with a series of objective tests to assess physical fitness (eg accelerometry) and a number of self-report measures. A complementary qualitative study will be carried out in order to explore patients' desire for lifestyle advice and when in their cancer journey they deem such advice to be useful. DISCUSSION This study will be the first to prospectively and longitudinally explore associations between physical fitness and well-being, bone health, and fatigue (along with a number of other physical and clinical outcomes) in a cohort of patients with MM with the use of objective measures. The findings will also help to identify time points within the MM pathway at which physical activity interventions may be introduced for maximum benefit.
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Magnúsdóttir R, Fisher A, Chenu C, Upton N. Reversal of thermal and mechanical allodynia with pregabalin in a mouse model of oxaliplatin-induced peripheral neuropathy. Scand J Pain 2016. [DOI: 10.1016/j.sjpain.2016.05.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Abstract
Aims
Chemotherapy-induced peripheral neuropathy (CIPN) is a dose limiting side effect in the use of the platinum-based antineoplastic drug oxaliplatin as a treatment for colorectal cancer. Currently there is no treatment available to reverse the neurotoxicity which presents as pain, sensory loss and cold allodynia in up to 80% of patients. The aim of this study is to investigate if pregabalin can reverse the allodynia caused by oxaliplatin in CIPN.
Methods
CIPN was induced in 10 male C57BL/6 mice (6 weeks-old) with a single intraperitoneal injection of oxaliplatin (15 mg/kg i.p.). Signs of thermal and mechanical allodynia were assessed from baseline to 20 days after injection by Cold/Hot plate (Bioseb, France) at 20 °C and hand-held von Frey (vF) hairs of gradually increasing weights. Pregabalin (3 mg/kg and 10 mg/kg p.o.) was administered to treat CIPN.
Results
Mechanical and thermal allodynia were established 3 days post-oxaliplatin injection and remained stable for 14 days. At day 15, pregabalin (3 mg/kg p.o.) reversed mechanical allodynia to baseline scores at 2 h (H) post-dosing and thermal allodynia at 1 and 2H post-dosing. Following a 2-day wash out where scores returned to neuropathic baseline, pregabalin (10 mg/kg p.o.) reverted scores for mechanical and thermal allodynia to baseline scores at both 1 and 2H. Thermal testing was performed either immediately after vF or alone and our results were similar, showing no iatrogenic effects of vF on thermal sensitivity. Correlation analysis of the responses to thermal and mechanical stimuli showed no significant trend, indicating that oxaliplatin-induced peripheral neuropathy affects the mechanical and thermal modalities in different ways.
Conclusion
Oxaliplatin-induced peripheral neuropathy as measured by thermal and mechanical allodynia is reversible by a single dose of pregabalin.
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 642720. RM is funded by a Marie Sklodowska-Curie grant agreement No. 642720 doing a joint PhD with the Royal Veterinary Collage and Transpharmation Ltd. AF and NU are employees of Transpharmation Ltd.
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Wendt R, Erwin W, Fisher A, Jones S, Jimenez S, Wong F, Jessop A. SU-G-IeP4-05: Experience with a Practical Approach to the Release of Radioactive Patients from Radiation Safety Isolation. Med Phys 2016. [DOI: 10.1118/1.4957100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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84
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Chang L, Fisher A, Liu Z, Cheng D. A density functional theory study of sulfur adsorption on Ag–Au nanoalloys. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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85
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Masters ND, Fisher A, Kalantar D, Stölken J, Smith C, Vignes R, Burns S, Doeppner T, Kritcher A, Park HS. Debris and shrapnel assessments for National Ignition Facility targets and diagnostics. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/717/1/012108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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86
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Miller R, Hartog B, Frew J, Parry G, Fisher A, Corris P, Meachery G, Lordan J. Total Lymphoid Irradiation (TLI) for the Management of Bronchiolitis Obliterans Syndrome (BOS) Post Lung Transplant: A Single Centre Experience. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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87
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van Setten J, de Jonge N, Holmes M, Khush K, Sweitzer N, Garcia-Pavia P, Rossano J, Dries D, Potena L, Zuckermann A, Christie J, Wilkes D, Lederer D, Meyer K, Glanville A, Corris P, Fisher A, Palmer S, Belperio J, de Weger R, Otten H, van de Graaf E, Keating B, Asselbergs F. The Role of Loss-of-Function Mutations on Death and Development of Rejection in HTX/LTX Patients. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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88
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Smith L, McCourt O, Sawyer A, Ucci M, Marmot A, Wardle J, Fisher A. A review of occupational physical activity and sedentary behaviour correlates. Occup Med (Lond) 2016; 66:185-92. [DOI: 10.1093/occmed/kqv164] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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89
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Zhao Z, Fisher A, Cheng D. Phase diagram and segregation of Ag-Co nanoalloys: insights from theory and simulation. NANOTECHNOLOGY 2016; 27:115702. [PMID: 26876185 DOI: 10.1088/0957-4484/27/11/115702] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Understanding the phase diagram is the first step to identifying the structure-performance relationship of a material at the nanoscale. In this work, a modified nanothermodynamical model has been developed to predict the phase diagrams of Ag-Co nanoalloys with the size of 1 ∼ 100 nm, which also overcomes the difference in the predicted results between theory and simulation for the first time. Based on this modified model, the phase diagrams of Ag-Co nanoalloys with various polyhedral morphologies (tetrahedron, cube, octahedron, decahedron, dodecahedron, rhombic dodecahedron, truncated octahedron, cuboctahedron, and icosahedron) have been predicted, showing good agreement with molecular dynamics simulations at the nanoscale of 1 ∼ 4 nm. In addition, the surface segregation of Ag-Co nanoalloys has been predicted with a Co-rich core/Ag-rich surface, which is also consistent with the simulation results. Our results highlight a useful roadmap for bridging the difference between theory and simulation in the prediction of the phase diagram at the nanoscale, which will help both theorists and experimentalists.
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90
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Laidsaar-Powell R, Butow P, Bu S, Fisher A, Juraskova I. Oncologists’ and oncology nurses’ attitudes and practices towards family involvement in cancer consultations. Eur J Cancer Care (Engl) 2016; 26. [DOI: 10.1111/ecc.12470] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2016] [Indexed: 12/01/2022]
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91
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Fisher A, Beeken RJ, Heinrich M, Williams K, Wardle J. Health behaviours and fear of cancer recurrence in 10 969 colorectal cancer (CRC) patients. Psychooncology 2016; 25:1434-1440. [PMID: 26863926 PMCID: PMC5157776 DOI: 10.1002/pon.4076] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 12/18/2015] [Accepted: 12/18/2015] [Indexed: 11/22/2022]
Abstract
Background This study aimed to examine whether fear of cancer recurrence (FCR) was related to two important health behaviours (physical activity and smoking) in a large sample of colorectal cancer patients. Methods Ten thousand nine hundred sixty nine patients, diagnosed in 2010–11, and in remission in 2013, completed the ‘Living with and Beyond Colorectal Cancer’ survey. The survey included purpose‐designed questions on fear of recurrence (‘I have fear about my cancer coming back’), demographics, treatment and health variables. Physical activity (PA) was recorded as number of days per week doing at least 30 min of brisk activity, and smoking status was reported. Results Fifty per cent of respondents reported fear of their cancer returning. More women than men ((Odds Ratio; (OR) 1.58; 95% confidence interval (CI) 1.46, 1.71)) more younger than older patients (OR 2.53; CI 2.33, 2.74) and slightly more patients from deprived areas (OR 1.14, 1.05, 1.23) reported FCR. Independently of demographics and treatment, compared with those meeting the PA guidelines, those who were doing only ‘some’ (OR 1.22; CI 1.11, 1.35) or ‘no’ PA (OR 1.28; CI 1.15, 1.42) reported higher FCR. Compared with non‐smokers, more current smokers reported fear (OR 1.34, CI 1.10, 1.58) and slightly more ex‐smokers (OR 1.11; CI 1.04, 1.21). Conclusions This cross‐sectional study provided novel data showing that colorectal cancer survivors with poorer health behaviours (those with lower activity levels and those who smoked) were more likely to experience FCR. Future research should replicate findings using detailed measures of fear, objective measures of health behaviours and identify directions of associations. © 2016 The Authors. Psycho‐Oncology Published by John Wiley & Sons Ltd.
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92
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Lincoln C, Crilly J, Scuffham P, Timms J, Becker K, van Buuren N, Fisher A, Murphy D, Green D. Reducing risks and improving health outcomes for prisoners in watch houses: Do emergency department nurses in the custodial setting make a difference? Pathology 2016. [DOI: 10.1016/j.pathol.2015.12.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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93
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Zhao Z, Fisher A, Shen Y, Cheng D. Magnetic Properties of Pt-Based Nanoalloys: A Critical Review. J CLUST SCI 2016. [DOI: 10.1007/s10876-016-0983-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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94
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Hu N, Zhang L, Yang C, Zhao J, Yang Z, Wei H, Liao H, Feng Z, Fisher A, Zhang Y, Xu ZJ. Three-dimensional skeleton networks of graphene wrapped polyaniline nanofibers: an excellent structure for high-performance flexible solid-state supercapacitors. Sci Rep 2016; 6:19777. [PMID: 26795067 PMCID: PMC4726342 DOI: 10.1038/srep19777] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Accepted: 11/30/2015] [Indexed: 12/24/2022] Open
Abstract
Thin, robust, lightweight, and flexible supercapacitors (SCs) have aroused growing attentions nowadays due to the rapid development of flexible electronics. Graphene-polyaniline (PANI) hybrids are attractive candidates for high performance SCs. In order to utilize them in real devices, it is necessary to improve the capacitance and the structure stability of PANI. Here we report a hierarchical three-dimensional structure, in which all of PANI nanofibers (NFs) are tightly wrapped inside reduced graphene oxide (rGO) nanosheet skeletons, for high-performance flexible SCs. The as-fabricated film electrodes with this unique structure showed a highest gravimetric specific capacitance of 921 F/g and volumetric capacitance of 391 F/cm3. The assembled solid-state SCs gave a high specific capacitance of 211 F/g (1 A/g), a high area capacitance of 0.9 F/cm2, and a competitive volumetric capacitance of 25.6 F/cm3. The SCs also exhibited outstanding rate capability (~75% retention at 20 A/g) as well as excellent cycling stability (100% retention at 10 A/g for 2000 cycles). Additionally, no structural failure and loss of performance were observed under the bending state. This structure design paves a new avenue for engineering rGO/PANI or other similar hybrids for high performance flexible energy storage devices.
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95
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Chang L, Fisher A, Liu Z, Cheng D. Highly sensitive and selective colorimetric detection of sulphide using Ag–Au nanoalloys: a DFT study. RSC Adv 2016. [DOI: 10.1039/c5ra17361b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
For the colorimetric detection of S, SH, cysteine, and H2S, the sensitivity of Ag–Au nanoalloy is better than pure Ag cluster, and both of them possess high selectivity for the detection of S.
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96
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Grande M, Jansen FAR, Blumenfeld YJ, Fisher A, Odibo AO, Haak MC, Borrell A. Genomic microarray in fetuses with increased nuchal translucency and normal karyotype: a systematic review and meta-analysis. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2015; 46:650-658. [PMID: 25900824 DOI: 10.1002/uog.14880] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 04/09/2015] [Accepted: 04/10/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To estimate the incremental yield of detecting copy number variants (CNVs) by genomic microarray over karyotyping in fetuses with increased nuchal translucency (NT) diagnosed by first-trimester ultrasound. METHODS This was a systematic review conducted in accordance with PRISMA criteria. We searched PubMed, Ovid MEDLINE and Web of Science for studies published between January 2009 and January 2015 that described CNVs in fetuses with increased NT, usually defined as ≥ 3.5 mm, and normal karyotype. Search terms included: fetal or prenatal, nuchal translucency or cystic hygroma or ultrasound anomaly, array comparative genomic hybridization or copy number variants, with related search terms. Risk differences were pooled to estimate the overall and stratified microarray incremental yield using RevMan. Quality assessment of included studies was performed using the Quality Assessment tool for Diagnostic Accuracy Studies (QUADAS-2) checklist. RESULTS Seventeen studies met the inclusion criteria for analysis. Meta-analysis indicated an incremental yield of 5.0% (95% CI, 2.0-8.0%) for the detection of CNVs using microarray when pooling results. Stratified analysis of microarray results demonstrated a 4.0% (95% CI, 2.0-7.0%) incremental yield in cases of isolated NT and 7.0% (95% CI, 2.0-12.0%) when other malformations were present. The most common pathogenic CNVs reported were 22q11.2 deletion, 22q11.2 duplication, 10q26.12q26.3 deletion and 12q21q22 deletion. The pooled prevalence for variants of uncertain significance was 1%. CONCLUSION The use of genomic microarray provides a 5.0% incremental yield of detecting CNVs in fetuses with increased NT and normal karyotype.
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McDonald L, Wardle J, Llewellyn CH, Johnson L, van Jaarsveld CHM, Syrad H, Fisher A. Sleep and nighttime energy consumption in early childhood: a population-based cohort study. Pediatr Obes 2015; 10:454-60. [PMID: 25565402 PMCID: PMC4737211 DOI: 10.1111/ijpo.12006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 11/24/2014] [Accepted: 11/26/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND Shorter sleep is a risk factor for weight gain in young children. Experimental studies show that sleep deprivation is associated with higher nighttime energy intake, but no studies have examined the patterning of energy intake in relation to nighttime sleep duration in young children. OBJECTIVES The objectives of the study were to test the hypothesis that shorter-sleeping children would show higher nighttime energy intake and to examine whether the additional calories were from drinks, snacks or meals. METHODS Participants were 1278 families from the Gemini twin cohort, using data from one child per family selected at random to avoid clustering effects. Nighttime sleep duration was measured at 16 months of age using the Brief Infant Sleep Questionnaire. Energy intake by time of day and eating episode (meal, snack, drink) were derived from 3-day diet diaries completed when children were 21 months. RESULTS Consistent with our hypothesis, shorter-sleeping children consumed more calories at night only (linear trend P < 0.001), with those sleeping <10 h consuming on average 120 calories (15.2% of daily intake) more at night than those sleeping ≥13 h. The majority of nighttime intake was from milk drinks. Associations remained after adjusting for age, sex, birth weight, gestational age, maternal education, weight and daytime sleep. CONCLUSIONS Shorter-sleeping, young children consume more calories, predominantly at night, and from milk drinks. Parents should be aware that providing milk drinks at night may contribute to excess intake. This provides a clear target for intervention that may help address associations between sleep and weight observed in later childhood.
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Yan Y, Xia BY, Ge X, Liu Z, Fisher A, Wang X. A Flexible Electrode Based on Iron Phosphide Nanotubes for Overall Water Splitting. Chemistry 2015; 21:18062-7. [PMID: 26493157 DOI: 10.1002/chem.201503777] [Citation(s) in RCA: 208] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Indexed: 11/11/2022]
Abstract
The design of cheap and efficient water splitting systems for sustainable hydrogen production has attracted increasing attention. A flexible electrode, based on carbon cloth substrate and iron phosphide nanotubes coated with an iron oxide/phosphate layer, is shown to catalyze overall water splitting. The as-prepared flexible electrode demonstrates remarkable electrocatalytic activity for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) at modest overpotentials. The surface iron oxide/phosphate, which is formed in situ, is proposed to improve the HER activity by facilitating the water-dissociation step and serves directly as the catalytically-active component for the OER process.
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Abelson Z, Gad R, Bar-Ad S, Fisher A. Anomalous Diffraction in Cold Magnetized Plasma. PHYSICAL REVIEW LETTERS 2015; 115:143901. [PMID: 26551813 DOI: 10.1103/physrevlett.115.143901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Indexed: 06/05/2023]
Abstract
Cold magnetized plasma possesses an anisotropic permittivity tensor with a unique dispersion relation that for adequate electron density and magnetic field results in anomalous diffraction of a right-hand circularly polarized beam. In this work, we demonstrate experimentally anomalous diffraction of a microwave beam in plasma. Additionally, decreasing the electron density enables observation of the transition of the material from a hyperbolic to a standard material. Manipulation of the control parameters will enable plasma to serve as a reconfigurable metamaterial-like medium.
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Gurevich T, Fisher A, Merkin L, Rozenberg A, Giladi N. Blood pressure variations are not predictive for survival length in multiple systems atrophy. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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