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Browsing Research Institutes and Centres by Issue Date

Now showing items 1-20 of 1415

Photocatalytic air-purification: A low-cost, real-time gas detection method

Keane, Donal A.; Hamilton, Niki; Gibson, Lorraine T.; Pillai, Suresh C.; Holmes, Justin D.; Morris, Michael A. (Royal Society of Chemistry, 2017-12-01)

This research demonstrates the use of a gas detector as a feasible alternative to the standardized analytical methods typically found in photocatalytic air-purification ISO standard tests and academic literature. A methyl ...
Gas- and particle-phase products from the photooxidation of acenaphthene and acenaphthylene by OH radicals

Riva, Matthieu; Healy, Robert M.; Flaud, Pierre-Marie; Perraudin, Emilie; Wenger, John C.; Villenave, Eric (Elsevier, 2017-11-30)

This work is focused on the gas-phase oxidation of acenaphthylene and acenaphthene by OH radicals and associated secondary organic aerosol (SOA) formation under low and high-NOx conditions. Experiments were carried out in ...
Patterning optically clear films: co-planar transparent and color-contrasted thin films from interdiffused electrodeposited and solution-processed metal oxides

Glynn, Colm; Geaney, Hugh; McNulty, David; O'Connell, John; Holmes, Justin D.; O'Dwyer, Colm (AIP Publishing, 2017-11-28)

Transparent thin films can now be site-selectively patterned and positioned on surface using mask-defined electrodeposition of one oxide and overcoating with a different solution-processed oxide, followed by thermal ...
The terrorist attacks and the human live birth sex ratio: a systematic review and meta-analysis.

Masukume, Gwinyai; O'Neill, Sinéad M.; Khashan, Ali S.; Kenny, Louise C.; Grech, Victor (Charles University, Karolinum Press, 2017-10-05)

The live birth sex ratio is defined as male/total births (M/F). Terrorist attacks have been associated with a transient decline in M/F 3-5 months later with an excess of male losses in ongoing pregnancies. The early 21st ...
Deletion of TLX and social isolation impairs exercise-induced neurogenesis in the adolescent hippocampus

Kozareva, Danka A.; O'Leary, Olivia F.; Cryan, John F.; Nolan, Yvonne M. (Wiley, 2017-10-03)

Adolescence is a sensitive period of neurodevelopment during which life experiences and the surrounding environment can have profound effects on the brain. Neurogenesis is a neurodevelopmental process of generating functional ...
Interface chemistry of contact metals and ferromagnets on the topological insulator Bi2Se3

Walsh, Lee A.; Smyth, Christopher M.; Barton, Adam T.; Wang, Qingxiao; Che, Zifan; Yue, Ruoyu; Kim, Jiyoung; Kim, Moon J.; Wallace, Robert M.; Hinkle, Christopher L. (American Chemical Society, 2017-10-02)

The interface between the topological insulator Bi2Se3 and deposited metal films is investigated using x-ray photoelectron spectroscopy including conventional contact metals (Au, Pd, Cr, and Ir) and magnetic materials (Co, ...
Prevalence of vitamin D deficiency and insufficiency among schoolchildren in Greece: The role of sex, degree of urbanisation and seasonality

Manios, Yannis; Moschonis, George; Hulshof, Toine; Bourhis, Anne-Sophie; Hull, George L. J.; Dowling, Kirsten G.; Kiely, Mairead E.; Cashman, Kevin D. (Cambridge University Press, 2017-10-02)

The current study was aiming to report the prevalence of suboptimal vitamin D status among schoolchildren in Greece and investigate the role of sex, urbanisation and seasonality on vitamin D status. A sample of 2386 ...
Ab initio study of the atomic level structure of the rutile TiO2 (110) – titanium nitride (TiN) interface

Gutiérrez Moreno, José Julio; Nolan, Michael (American Chemical Society, 2017-09-22)

Titanium nitride (TiN) is widely used in industry as a protective coating due to its hardness and resistance to corrosion and can spontaneously form a thin oxide layer when it is exposed to air, which could modify the ...
Microcytosis is associated with low cognitive outcomes in healthy 2-year-olds in a high-resource setting

McCarthy, Elaine K.; Kiely, Mairead E.; Hannon, Geraldine; Ahearne, Caroline E.; Kenny, Louise C.; Hourihane, Jonathan O'B.; Irvine, Alan D.; Murray, Deirdre M. (Cambridge University Press, 2017-09-13)

Fe deficiency in early childhood is associated with long-term consequences for cognitive, motor and behavioural development; however explorations in healthy children from low risk, high-resource settings have been limited. ...
Designer bacteria as intratumoural enzyme biofactories

Lehouritis, Panos; Hogan, Glenn; Tangney, Mark (Elsevier, 2017-09-12)

Bacterial-directed enzyme prodrug therapy (BDEPT) is an emerging form of treatment for cancer. It is a biphasic variant of gene therapy in which a bacterium, armed with an enzyme that can convert an inert prodrug into a ...
In situ investigation of methane dry reforming on metal/ceria(111) surfaces: metal-support interactions and C-H bond activation at low temperature

Liu, Zongyuan; Lustemberg, Pablo; Gutiérrez, Ramón A.; Carey, John J.; Palomino, Robert M.; Vorokhta, Mykhailo; Grinter, David C.; Ramírez, Pedro J.; Matolín, Vladimír; Nolan, Michael; Ganduglia-Pirovano, M. Verónica; Senanayake, Sanjaya D.; Rodriguez, José A. (John Wiley & Sons, Inc., 2017-09-05)

Studies with a series of metal/ceria(111) (metal=Co, Ni, Cu; ceria=CeO2) surfaces indicate that metal–oxide interactions can play a very important role for the activation of methane and its reforming with CO2 at relatively ...
Non-classical behaviour of higher valence dopants in chromium (III) oxide by a Cr vacancy compensation mechanism

Carey, John J.; Nolan, Michael (IOP Publishing, 2017-09-05)

Modification of metal oxides with dopants that have a stable oxidation in their parent oxides which is higher than the host system is expected to introduce extra electrons into the material to improve carrier mobility. ...
Self-starting optical–electrical–optical homodyne clock recovery for phase-modulated signals

Sooudi, Ehsan; Ellis, Andrew D.; Manning, Robert J. (Optical Society of America, 2017-09-01)

We propose a novel self-homodyne optical–electrical–optical clock recovery technique for binary phase-shift keying (BPSK) signals using commercial optical and electrical components. We present the principle of operation ...
A review of physical activity monitoring and activity trackers for older adults

Barton, John; O'Flynn, Brendan; Tedesco, Salvatore (IOS Press, 2017-09)

The objective assessment of physical activity levels through wearable inertial-based motion detectors for an automatic, continuous and long-term monitoring of people in free-living environments is a well-known research ...
Very large phase shift of microwave signals in a 6 nm Hf x Zr 1− x O 2 ferroelectric at ±3 V

Dragoman, Mircea; Modreanu, Mircea; Povey, Ian, M.; Iordanescu, Sergiu; Aldrigo, Martino; Romanitan, Cosmin; Vasilache, Dan; Dinescu, Adrian; Dragoman, Daniela (IOP Publishing, 2017-08-31)

In this letter, we report for the first time very large phase shifts of microwaves in the 1–10 GHz range, in a 1 mm long gold coplanar interdigitated structure deposited over a 6 nm Hf x Zr1−x O2 ferroelectric grown directly ...
The effect of model inaccuracy and move-blocking on the performance of a wave-to-wire wave energy converter , under economic predictive control

O'Sullivan, Adrian C. M.; Lightbody, Gordon (EWTEC, 2017-08-30)

In this paper, an economic Model Predictive Control (MPC) is used to investigate the effects that arise from the model mismatch between the control and the system. It is shown that the average electrical power is affected ...
Regrowth-free single-mode semiconductor laser suitable for monolithic integration based on pits mirror

Dernaika, Mohamad; Kelly, Niall P.; Caro, Ludovic; Shortiss, Kevin; Peters, Frank H. (Society of Photo-optical Instrumentation Engineers (SPIE), 2017-08-22)

A regrowth-free single-mode laser that is made using standard UV photolithography is reported. The laser achieves a single-mode side-mode suppression ratio of 37 dB, linewidth of 450 kHz, and tunes across 2.9 nm and is ...
Statistical study of stacked/coupled site-controlled pyramidal quantum dots and their excitonic properties

Moroni, Stefano T.; Chung, Tung-Hsun; Juska, Gediminas; Gocalińska, Agnieszka M.; Pelucchi, Emanuele (AIP Publishing, 2017-08-22)

We report on stacked multiple quantum dots (QDs) formed inside inverted pyramidal recesses, which allow for the precise positioning of the QDs themselves. Specifically, we fabricated double QDs with varying inter-dot ...
Optical and structural characterisation of epitaxial nanoporous GaN grown by CVD

Mena, J.; Carvajal, J. J.; Martínez, O.; Jiménez, J.; Zubialevich, Vitaly Z.; Parbrook, Peter, J.; Diaz, F.; Aguilo, M. (IOP Publishing, 2017-08-21)

In this paper we study the optical properties of nanoporous gallium nitride (GaN) epitaxial layers grown by chemical vapour deposition on non-porous GaN substrates, using photoluminescence, cathodoluminescence, and resonant ...
A cost-benefit analysis of two alternative models of maternity care in Ireland

Fawsitt, Christopher G.; Bourke, Jane; Murphy, Aileen; McElroy, Brendan; Lutomski, Jennifer E.; Murphy, Rosemary; Greene, Richard A. (Springer International Publishing; Adis, 2017-08-21)

Background: The Irish government has committed to expand midwifery-led care alongside consultant-led care nationally, although very little is known about the potential net benefits of this reconfiguration. Objectives: To ...

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