Browsing University of Hertfordshire by Title

Now showing items 17632-17651 of 24471

    • Preparation of N-doped carbon dots based on starch and their application in white LED 

      Liu, Xinghua; Zheng, Jingxia; Yang, Yongzhen; Chen, Yong; Liu, Xuguang (2018-12-01)
      N-doped carbon dots (CDs) were synthesized simply and economically by a one-step hydrothermal method using starch as a carbon source and ethylenediamine (EDA) as a nitrogen dopant. The prepared CDs possess the properties ...

    • Preparatory work to support the re-evaluation of botanically defined feed flavouring additives 

      Lewis, Kathleen; Tzilivakis, John; Green, Andrew; Warner, Douglas (European Food Safety Authority (EFSA), 2015-02-13)
      In recent years, interest in the use of naturally occurring substances of botanical origin as livestock feed additives has increased significantly. Before any additive can be marketed it must undergo a rigorous scientific ...

    • Preparing for a new era 

      Canfora, Gerardo; Dalcher, Darren; Raffo, David (2011-01)
      Editorial

    • Preparing for low surface brightness science with the Vera C. Rubin Observatory: Characterisation of tidal features from mock images 

      Martin, G.; Bazkiaei, A. E.; Spavone, M.; Iodice, E.; Mihos, J. C.; Montes, M.; Benavides, J. A.; Brough, S.; Carlin, J. L.; Collins, C. A.; Duc, P. A.; Gómez, F. A.; Galaz, G.; Hernández-Toledo, H. M.; Jackson, R. A.; Kaviraj, S.; Knapen, J. H.; Martínez-Lombilla, C.; McGee, S.; O'Ryan, D.; Prole, D. J.; Rich, R. M.; Román, J.; Shah, E. A.; Starkenburg, T. K.; Watkins, A. E.; Zaritsky, D.; Laigle, C.; Pichon, C.; Armus, L.; Bianconi, M.; Buitrago, F.; Busá, I.; Davis, F.; Demarco, R.; Desmons, A.; García, P.; Graham, A. W.; Holwerda, B.; Hon, D. S. -H.; Khalid, A.; Klehammer, J.; Klutse, D. Y.; Lazar, I.; Nair, P.; Noakes-Kettel, E. A.; Rutkowski, M.; Saha, K.; Sahu, N.; Sola, E.; Vázquez-Mata, J. A.; Vera-Casanova, A.; Yoon, I. (2022-06-01)
      Tidal features in the outskirts of galaxies yield unique information about their past interactions and are a key prediction of the hierarchical structure formation paradigm. The Vera C. Rubin Observatory is poised to deliver ...

    • Preparing to talk : Interaction between a linguistically enabled agent and a human teacher 

      Lyon, Caroline; Nehaniv, C.L.; Saunders, Joe (AAAI, 2010)
      As a precursor to learning to use language an infant has to acquire preliminary linguistic skills, including the ability to recognize and produce word forms without meaning. This develops out of babbling, through vocal ...

    • Preparing young people with complex needs and their families for transition to adult services 

      O'Connell, Andrew; Petty, Julia (2019-01-08)
      Improving survival rates for children and young people with complex health needs requires a robust system for transition to adult services. Effective planning is essential to ensure a smooth transition process that is in ...

    • Preprint: Dissociable age effects across measures of autobiographical and episodic memory 

      Mair, Ali; Poirier, Marie; Conway, Martin A. (2018-12-24)
      The aim of this study was to investigate inconsistent findings in the ageing autobiographical memory literature. Twenty older and 20 younger adults were compared across a battery of tasks which measured memory for everyday ...

    • Prescribing errors in hospital inpatients : a three-centre study of their prevalence, types and causes 

      Franklin, Bryony Dean; Reynolds, Matthew; Shebl, Nada Atef; Burnett, Susan; Jacklin, Ann (2011)
      To compare the prevalence and causes of prescribing errors in newly written medication orders and how quickly they were rectified, in three NHS organisations.

    • Prescribing Psychotropics: Misuse, Abuse, Dependence, Withdrawal and Addiction 

      Schifano, Fabrizio; Martinotti, Giovanni; Chiappini, Stephania; Department of Clinical, Pharmaceutical and Biological Science; Centre for Health Services and Clinical Research; Psychopharmacology, Drug Misuse and Novel Psychoactive Substances Unit; School of Life and Medical Sciences (Frontiers Media S.A., 2021-06-21)
      Recently, the growing use of prescription drugs for recreational purposes has been reported widely in the literature. However, the true extent and nature of such use is not completely understood. Some medications are already ...

    • Prescription drugs misuse in “clubbers” and disco goers in Ibiza 

      di Giannantonio, Massimo; Negri, Attilio; Schiavone, Stefania; Vannini, Chiara; Pettorruso, Mauro; Di Giorgio, Fabio; Verrastro, Valeria; Trabace, Luigia; Corbo, Mariangela; Gottardo, Rossella; Camuto, Cristian; Mazzarino, Monica; Barra, Andrea; De Berardis, Domenico; Iglesias Lopez, Juan; Merino del Villar, Cristina; Schifano, Fabrizio; Martinotti, Giovanni (2020-12-15)
      Background: Prescription drugs misuse and its related risks are considered a worldwide public health issue. Current trends show that the extent of such phenomenon may not be limited to subjects with psychiatric disorders, ...

    • Prescriptive durability specifications 

      Torrent, R.; D’Andréa, R.; Gonçalves, A.; Jacobs, F.; Imamoto, K.; Kanellopoulos, A.; Khrapko, M.; Monteiro, A. V.; Nanukuttan, S. V. (2016)

    • Prescriptive Unitarity from Positive Geometries 

      Ferro, Livia; Glew, Ross; Lukowski, Tomasz; Stalknecht, Jonah (2024-03-01)
      In this paper, we define the momentum amplituhedron in the four-dimensional split-signature space of dual momenta. It encodes scattering amplitudes at tree level and loop integrands for N=4 super Yang-Mills in the planar ...

    • The presence and the effects of neuropeptide Y in rat anococcygeus muscle 

      Iravani, Mahmoud M.; Zar, M. A. (1997-10-29)
      Isolated anococcygeus muscle from male rats was examined for the presence of neuropeptide Y-immunoreactive nerves and for the effects of neuropeptide Y on its tone and its contractile/relaxant responses to electrical field ...

    • Presence of a pre-hospital enhanced care team reduces on scene time and improves triage compliance for stab trauma 

      Cowley, Alan; Durham, Mark; Aldred, Duncan; Crabb, Richard; Crouch, Paul; Heywood, Adam; McBride, Andy; Williams, Julia; Lyon, Richard (2019-09-06)
      Background: A reduction in pre-hospital scene time for patients with penetrating trauma is associated with reduced mortality, when combined with appropriate hospital triage. This study investigated the relationship between ...

    • Presence of metals in herbal extracts 

      Guirguis, Amira; Owen, Jade; Stair, Jacqueline (2012-11-06)
      Do metals from raw herbs transport into herbal preparations during manufacture? Amira Guirguis and colleagues take a look at the issue using St John’s wort as an example.

    • The presence of mind 

      Hutto, D. (John Benjamins Publishing Company, 1999)
      Is our daily account of ourselves justified by a new science? Or, will our self-understanding be unaffected? This text argues that beliefs and desires have a rightful place in the explanation of action. Eliminativist ...

    • Presence of Neuropeptide-y in the rat seminal-vesicle and its effects on Noradrenaline-induced and nerve-induced contractions. 

      Iravani, Mahmoud M.; Zar, M. A. (1994-11)
      1 Immunohistochemical and functional studies have been performed to localize and determine the effects of neuropeptide Y (NPY) in the rat seminal vesicle. 2 An abundant presence of NPY-immunoreactive nerves, mainly ...

    • Present Status and Future Programs of the n_TOF Experiment 

      Chiaveri, E.; Calviani, M.; Vlachoudis, V.; Weiss, C.; Andriamonje, S.; Andrzejewski, J.; Audouin, L.; Avrigeanu, V.; Barbagallo, M.; Becares, V.; Becvar, F.; Belloni, F.; Berthoumieux, E.; Billowes, J.; Boccone, V.; Brugger, M.; Calvino, F.; Cano-Ott, D.; Carrapico, C.; Cerutti, F.; Chin, M.; Colonna, N.; Cortes, G.; Cortes-Giraldo, M. A.; Diakaki, M.; Dillmann, I.; Domingo-Pardo, C.; Duran, I.; Dzysiuk, N.; Eleftheriadis, C.; Fernandez-Ordonez, M.; Ferrari, A.; Fraval, K.; Ganesan, S.; Giubrone, G.; Gomez-Hornillos, M. B.; Goncalves, I. F.; Gonzalez-Romero, E.; Gramegna, F.; Griesmayer, E.; Guerrero, C.; Gunsing, F.; Heil, M.; Jenkins, D. G.; Jericha, E.; Kadi, Y.; Kaeppeler, F.; Karadimos, D.; Kokkoris, M.; Krticka, M.; Kroll, J.; Lederer, C.; Leeb, H.; Leong, L. S.; Losito, R.; Lozano, M.; Manousos, A.; Marganiec, J.; Martinez, T.; Massimi, C.; Mastinu, P. F.; Mastromarco, M.; Meaze, M.; Mendoza, E.; Mengoni, A.; Milazzo, P. M.; Mirea, M.; Paradela, C.; Pavlik, A.; Perkowski, J.; Praena, J.; Quesada, J. M.; Rauscher, T.; Reifarth, R.; Riego, A.; Roman, F.; Rubbia, C.; Sarmento, R.; Tagliente, G.; Tain, J. L.; Tarrio, D.; Tassan-Got, L.; Tsinganis, A.; Valenta, S.; Vannini, G.; Variale, V.; Vaz, P.; Ventura, A.; Vermeulen, M. J.; Versaci, R.; Vlastou, R.; Wallner, A.; Ware, T.; Wright, T. J. (EDP Sciences, 2012)
      The neutron time-of-flight facility n_TOF at CERN, Switzerland, operational since 2001, delivers neutrons using the Proton Synchrotron (PS) 20 GeV/c proton beam impinging on a lead spallation target. The facility combines ...

    • Presentation. Mejorando le Calidad en procesos, productos y sistemasorganizativos 

      Dalcher, Darren; Fernandez-Sanz, Luis (2009-07)

    • Presentations of Inverse Semigroups their Kernels and Extensions 

      Carvalho, Catarina; Gray, Robert; Ruskuc, Nik (2011)
      Let S be an inverse semigroup and let π:S→T be a surjective homomorphism with kernel K. We show how to obtain a presentation for K from a presentation for S, and vice versa. We then investigate the relationship between the ...