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Full-Text Articles in Entire DC Network
The Effect Of Air Preheating In A Biomass Cfb Gasifier Using Aspen Plus Simulation, Wayne Doherty, Anthony Reynolds, David Kennedy
The Effect Of Air Preheating In A Biomass Cfb Gasifier Using Aspen Plus Simulation, Wayne Doherty, Anthony Reynolds, David Kennedy
Articles
In the context of climate change, increasing efficiency and energy security, biomass gasification is likely to play an important role in energy production. Atmospheric circulating fluidised bed (CFB) technology was selected for the current study. The primary objective of this research is to develop a computer simulation model of a CFB biomass gasifier that can accurately predict gasifier performance under various operating conditions. An original model was developed using ASPEN Plus (Advanced System for Process ENgineering Plus). The model is based on Gibbs free energy minimisation. The restricted equilibrium method was used to calibrate the model against experimental data. This …
Renewable Energy Resources And Technologies Applicable To Ireland, Fergal O'Rourke, Fergal Boyle, Anthony Reynolds
Renewable Energy Resources And Technologies Applicable To Ireland, Fergal O'Rourke, Fergal Boyle, Anthony Reynolds
Articles
The energy consumed in Ireland is primarily achieved by the combustion of fossil fuels. Ireland’s only indigenous fossil fuel is peat; all other fossil fuels are imported. As well as fossil fuels continually becoming more expensive, their use as an energy source also has a negative impact on the environment. Ireland’s energy consumption can be separated into 3 divisions; transportation, electricity generation and heat energy. Ireland however has a vast range of high quality renewable energy resources. Ireland has set a target of 33% of its electricity will be generated from renewable sources by 2020[1]. The use of biomass, wind …
Simulation Of A Tubular Solid Oxide Fuel Cell Stack Operating On Biomass Syn-Gas Using Aspen Plus, Wayne Doherty, Anthony Reynolds, David Kennedy
Simulation Of A Tubular Solid Oxide Fuel Cell Stack Operating On Biomass Syn-Gas Using Aspen Plus, Wayne Doherty, Anthony Reynolds, David Kennedy
Articles
A tubular solid oxide fuel cell (SOFC) stack is modelled and its operation on biomass syn-gas is investigated. The objective of this work is to develop a computer simulation model of a biomass gasification-SOFC (BG-SOFC) system capable of predicting performance under various operating conditions and using diverse fuels. The stack is modelled using Aspen Plus and considers ohmic, activation and concentration losses. It is validated against published data for operation on natural gas. Operating parameters such as fuel and air utilisation factor (Uf and Ua), current density (j) and steam to carbon ratio ( …
First Approaches To Standard Protocols And Reference Materials For The Assessment Of Potential Hazards Associated With Nanomaterialss, Gordon Chambers, Hugh Byrne, Iseult Lynch, Micheal Riediker, Hans Bouwmeester, Hans Marvin, Alan Casey, Markus Berges, Martin Clift, Teresa Fernandez, Lise Fjellsbo, Lucienne Juillerat, Gert Roebben, Christoph, Klein, Qinglan Wu, Vince Hackley, Jean-Pierre Kaiser, Wolfganag Kreyling, Michael Garner, Peter Hatto,, Kenneth Dawson
First Approaches To Standard Protocols And Reference Materials For The Assessment Of Potential Hazards Associated With Nanomaterialss, Gordon Chambers, Hugh Byrne, Iseult Lynch, Micheal Riediker, Hans Bouwmeester, Hans Marvin, Alan Casey, Markus Berges, Martin Clift, Teresa Fernandez, Lise Fjellsbo, Lucienne Juillerat, Gert Roebben, Christoph, Klein, Qinglan Wu, Vince Hackley, Jean-Pierre Kaiser, Wolfganag Kreyling, Michael Garner, Peter Hatto,, Kenneth Dawson
Articles
All new technologies have an inherent risk, which is typically assessed alongside the development of applications of the technology. This is also the case for nanotechnology: a key concern in the case of engineered nanomaterials (ENMs) is that due to their very small size, NMs can reach areas such as the cell that are inaccessible to other materials, such as implants and drugs. As a result of their large surface area, NMs may be more reactive than other larger materials. The large physical and chemical variability of NMs, and the fact that small changes can have large consequences, mean that …
Optical Properties Of Silica-Mfi Doped Acrylamide-Based Photopolymer, Tzvetanka Babeva, Rosen Todorov, Svetlana Mintova, Temenujka Yovcheva, Izabela Naydenova, Vincent Toal
Optical Properties Of Silica-Mfi Doped Acrylamide-Based Photopolymer, Tzvetanka Babeva, Rosen Todorov, Svetlana Mintova, Temenujka Yovcheva, Izabela Naydenova, Vincent Toal
Articles
The optical properties of acrylamide-based photopolymer doped with pure silica MFI-type zeolites are studied by refractometric and spectrophotometric means. Dynamic Light Scattering and Transmission Electron Microscopy are used for zeolite characterization and laser refractometry and White Light Interferometric profilometry are used for surface characterization of the composites. Refractive indices and absorption coefficients of composites are determined from their transmittance and reflectance spectra. The calculated dispersion curves are further used for deriving the zeolites refractive index and porosity and the latter compared to the values of total pore volume obtained from N2-sorption measurements. The impact of the doping level on the …
Antenna Optimization With A Computationally Efficient Multiobjective Evolutionary Algorithm, Matthias John, Max Ammann
Antenna Optimization With A Computationally Efficient Multiobjective Evolutionary Algorithm, Matthias John, Max Ammann
Articles
An efficient multiobjective evolutionary algorithm is described for optimizing a novel spline based printed monopole antenna. The antenna geometry is based on spline outlines. Both radiating element and groundplane are simultaneously optimized by the algorithm. The resulting antenna performance is evaluated. It is shown that the evolutionary algorithm and the spline geometry can be used to efficiently generate ultrawideband antennas on limited computing resources.
Emitter-Wrap-Through Photovoltaic Dipole Antenna With Solar Concentrator, Maria Roo Ons, S. Shynu, Max Ammann, Sarah Mccormack, Brian Norton
Emitter-Wrap-Through Photovoltaic Dipole Antenna With Solar Concentrator, Maria Roo Ons, S. Shynu, Max Ammann, Sarah Mccormack, Brian Norton
Articles
A novel photovoltaic dipole antenna employing a solar concentrator as a reflector is proposed. Four identical emitter-wrap-through rear contact solar cells connected in series as a folded dipole are simultaneously used for power generation and as the antenna radiating element, which is located in the focal line of a parabolic solar concentrator. The parabolic structure acts as a solar concentrator for the photovoltaic cells as well as a reflector for the folded dipole antenna. Full-wave electromagnetic simulation with supportive experimental work validates this design. The measured fractional impedance bandwidth and gain were 21% and 11.1 dBi, respectively. The antenna/solar arrangement …
Generalised Design Process For Fiber-Bend-Loss-Based Edge Filters For A Wavelength Measurement System, Pengfei Wang, Gerald Farrell, Yuliya Semenova
Generalised Design Process For Fiber-Bend-Loss-Based Edge Filters For A Wavelength Measurement System, Pengfei Wang, Gerald Farrell, Yuliya Semenova
Articles
We investigate and present a generalized methodology for the design of a fiber-bend-loss-based edge filter, starting with the task of evaluating and selecting suitable fibers and then considering the design of a fiber-bending-loss edge filter. As an example to illustrate the methodology, a Corning SMF28e fiber with a 900 μmdiameter is selected and two sample edge filters are designed for experimental verification. The designed edge filters are compact, easy to fabricate, meet target spectral specifications, and show low polarization-dependent loss, confirming the effectiveness of the proposed methodology for fiber-bend-loss-based edge filter design.
Microstrip-Fed Dual-Frequency Annular-Slot Antenna Loaded By Split-Ring-Slot, Xiulong Bao, Max Ammann
Microstrip-Fed Dual-Frequency Annular-Slot Antenna Loaded By Split-Ring-Slot, Xiulong Bao, Max Ammann
Articles
A compact dual-band annular-slot antenna loaded by a concentric split-ring-slot is presented. A stepped microstrip feedline enables the control of the coupling and provides good matching. The annular-slot is connected to the split-ring-slot by a rectangular slot, which increases the surface of the current path, thus notably reducing the resonant frequency for a given size. The embedded split-ring-slot structure allows many resonant modes to be realised. By tuning the key parameters, these operating modes and their bandwidths can be controlled. A wide bandwidth can be realised for either the lower band, upper band or both bands simultaneously, depending on the …
Sms Fibre Structure For Temperature Measurement Using A Simple Intensity-Based Interrogation System, Agus Hatta, Ginu Rajan, Yuliya Semenova, Gerald Farrell
Sms Fibre Structure For Temperature Measurement Using A Simple Intensity-Based Interrogation System, Agus Hatta, Ginu Rajan, Yuliya Semenova, Gerald Farrell
Articles
A singlemode–multimode–singlemode (SMS) fibre structure for temperature measurement that utilises a simple intensity-based interrogation system is proposed. The temperature dependence of the SMS fibre structure utilised as a sensor is investigated numerically and experimentally. It is found that a strong temperature dependence for the SMS fibre structure exists at selected wavelengths. The temperature characteristic at such wavelengths is linear in nature and can be used for temperature measurements. The proposed temperature sensor offers a high resolution and accuracy, and also benefits from a simple configuration and low cost when compared to other fibre-optic temperature sensors.
Use Of A Single-Multiple-Single-Mode Fiber Filter For Interrogating Fiber Bragg Grating Strain Sensors With Dynamic Temperature Compensation, Qiang Wu, Muhammad Hatta, Yuliya Semenova, Gerald Farrell
Use Of A Single-Multiple-Single-Mode Fiber Filter For Interrogating Fiber Bragg Grating Strain Sensors With Dynamic Temperature Compensation, Qiang Wu, Muhammad Hatta, Yuliya Semenova, Gerald Farrell
Articles
An interrogation technique for fiber Bragg grating (FBG) strain sensors with dynamic temperature compensation using a single-multiple-single-mode (SMS) fiber filter as a temperature compensating element is presented. Experimental results show that this technique offers a resolution of better than 3:4 με for strain measurements in the range from 0 to 1667 με, and the temperature induced error is as low as 34 με in the temperature range from 10 to 60 °C. The temperature induced error could be further reduced if the temperature sensitivity (the rate of temperature induced wavelength shift) of the SMS filter was closer to that of …
Holographic Recording In Acrylamide Photopolymers: Thickness Limitations, Mohammad Mahmud, Izabela Naydenova, Nitesh Pandey, Tzvetanka Babeva, Raghavendra Jallapuram, Suzanne Martin, Vincent Toal
Holographic Recording In Acrylamide Photopolymers: Thickness Limitations, Mohammad Mahmud, Izabela Naydenova, Nitesh Pandey, Tzvetanka Babeva, Raghavendra Jallapuram, Suzanne Martin, Vincent Toal
Articles
Holographic recording in thick photopolymer layers is important for application in holographic data storage, volume holographic filters and correlators. Here, the characteristics of acrylamidebased photopolymer layers having thickness from 250 μm to 1-mm were studied. For each layer thickness samples with three different values of absorbance were studied. By measuring both the first order diffraction efficiency growth of holographically recorded gratings and studying the diffraction patterns obtained, the influence of scattering on the diffraction efficiency of thick volume holographic gratings was analyzed. It was observed that above a particular thickness and absorbance, the first order diffraction efficiency significantly decreased because …
Preparation, Characterization Of Nipam And Nipam/Bam Copolymer Nanoparticles And Their Acute Toxicity Testing Using An Aquatic Test Battery, Pratap Naha, Alan Casey, Tiziana Tenuta, Iseult Lynch, Kenneth Dawson, Hugh Byrne, Maria Davoren
Preparation, Characterization Of Nipam And Nipam/Bam Copolymer Nanoparticles And Their Acute Toxicity Testing Using An Aquatic Test Battery, Pratap Naha, Alan Casey, Tiziana Tenuta, Iseult Lynch, Kenneth Dawson, Hugh Byrne, Maria Davoren
Articles
Poly N-isopropylacrylamide and N-isopropylacrylamide / N-tert-butylacrylamide copolymer nanoparticles of 50 to 70 nm were prepared by free radical polymerisation. The particle sizes of the copolymer nanoparticles were measured in the test media MilliQ water, Algae Media, Daphnia Media and Microtox Diluent as a function of temperature. Whereas in MilliQ water the particle size was seen to decrease above the lower critical solution temperature of the thermoresponsive polymer, in the test media it was seen to increase significantly, indicative of aggregation. At the temperatures employed for the ecotoxicological studies all particles, with the exception of the 50:50copolymer existed as nanoparticles, however. …
Changing Times: The Changing Role Of Assistant Librarians In Dit's Aungier St. Library, Allison Kavanagh
Changing Times: The Changing Role Of Assistant Librarians In Dit's Aungier St. Library, Allison Kavanagh
Articles
An examination of the changing role of subject librarians at Technological University Dublin's Aungier St library.
The Treaty Of Lisbon And The Reformed Jurisdictional Powers Of The European Court Of Justice In The Field Of Justice And Home Affairs., Stephen Carruthers
The Treaty Of Lisbon And The Reformed Jurisdictional Powers Of The European Court Of Justice In The Field Of Justice And Home Affairs., Stephen Carruthers
Articles
This Article analyses the jurisdictional powers of the Court of Justice of the European Union (CJEU) in respect of Justice and Home Affairs (JHA) measures both under pre-Lisbon Title VI TEU and post-Lisbon under Title V of Part Three TFEU. In Part one, it assesses the deficiencies of the pre-Lisbon system. In particular it analyses the negative consequences for legitimacy arising from the restrictions on justiciability in respect of pre-Lisbon JHA measures in light of case law of the CJEU and the European Court of Human Rights. In Part two, it outlines the genesis and substance of the reforms in …
Dab Eureka-147: The European Platform For Digital Radio, Brian O'Neill
Dab Eureka-147: The European Platform For Digital Radio, Brian O'Neill
Articles
Like its analogue counterpart, digital radio is one of the 'older' forms of new media. The technology of digital radio broadcasting has been under active development for at least 25 years and has produced a number of different technical solutions, the longest established of which is Eureka-147 or Digital Audio Broadcasting (DAB). This article explores DAB's distinctly European vision for the future of broadcasting. DAB is traced to its origins in 1980s European research and development policy and its affinity with traditions of European public service broadcasting. Ironically, it was DAB's failure to capitalize on its 'Europeanness' that contributed to …
Gender Differences In Children’S Internet Use:Key Findings From Europe, Helen Mcquillan, Brian O'Neill
Gender Differences In Children’S Internet Use:Key Findings From Europe, Helen Mcquillan, Brian O'Neill
Articles
This paper analyses comparative empirical data from across Europe on gender differences in children’s internet use, and through a new interpretive framework on young people’s experiences, seeks to add new findings to this growing international knowledge base. Linking feminist theory on gender and technology with theories of youth gender identity construction, four key areas are investigated. Firstly, the impact of increased internet access and use in schools and in homes on gender equality is examined. Secondly, youth communication and content creation practices are investigated to explore whether the internet is facilitating flexibility in gender identity and the transcendence of traditional …
Supporting Value Creation By Reducing Cultural Distance As A Barrier To Exporting, Thomas Cooney, Amanda Ratcliffe, Jane Silver
Supporting Value Creation By Reducing Cultural Distance As A Barrier To Exporting, Thomas Cooney, Amanda Ratcliffe, Jane Silver
Articles
Value creation at the level of the organisation involves balancing the interests of several different stakeholders, with exporting occasionally viewed as a broad-based strategy capable of achieving such equilibrium. However, while much has been written concerning the logistical and economic challenges faced by SMEs wishing to avail of market opportunities abroad, there remains a dearth of information offering solutions to overcoming cultural distance as a barrier to exporting. An EU project entitled ‘Passport to Trade’ sought to provide greater insight into business culture by collating the customs and subjective norms of all member states within the EU and making the …
So Much More Than A "Harmless Drudge": Samuel Johnson And His Dictionary, Joan Howland
So Much More Than A "Harmless Drudge": Samuel Johnson And His Dictionary, Joan Howland
Articles
No abstract provided.
Coordinating Cross-Border Bankruptcy: How Territorialism Saves Universalism, Edward Adams, Jason Fincke
Coordinating Cross-Border Bankruptcy: How Territorialism Saves Universalism, Edward Adams, Jason Fincke
Articles
This article explores the difficulties of coordinating cross-border bankruptcies. These difficulties arise from the lack of a binding set of uniform international rules, forcing multinational businesses to look to domestic laws for guidance. The problem is that without coordinated, concurrent insolvency proceedings, an effective reorganization of a multinational corporation is impossible because a multitude of separate judgments ultimately leads to the dismemberment of a debtor's estate.To address this challenge, an increasing number of countries – including the United States and several European countries such as Germany, Poland, Romania, Spain, and the United Kingdom – have enacted a Model Law on …
A Missed Opportunity: Minnesota's Failed Experiment With Choice-Based Integration, Margaret Hobday, Geneva Finn, Myron Orfield
A Missed Opportunity: Minnesota's Failed Experiment With Choice-Based Integration, Margaret Hobday, Geneva Finn, Myron Orfield
Articles
No abstract provided.
Bargaining In The Shadow Of The Lawsuit: A Social Norms Theory Of Incomplete Contracts, Claire Hill
Bargaining In The Shadow Of The Lawsuit: A Social Norms Theory Of Incomplete Contracts, Claire Hill
Articles
Complex business contracts are notoriously difficult to write and read. Certainly, when litigation arises, courts scarcely have an easy time interpreting them. Indeed, contracts don't look at all as though they are written to tell a court what the parties want. Why can't smart, well-motivated lawyers do a better job? My article argues that they rationally don't try. I argue for a view of contracting in which parties aren't principally trying to set forth an agreement for a court to enforce. Rather, by leaving inartful language and ambiguity in the agreement, parties are bonding themselves not to seek precipitous recourse …
The Suspension Theory: Hurricane Katrina Looting, Property Rights, And Personhood Comment, Casey E. Faucon
The Suspension Theory: Hurricane Katrina Looting, Property Rights, And Personhood Comment, Casey E. Faucon
Articles
No abstract provided.
Rebellious Knowledge Production, Academic Activism, & Outsider Democracy: From Principles To Practices In Latcrit Theory, 1995 To 2008, Francisco Valdes
Rebellious Knowledge Production, Academic Activism, & Outsider Democracy: From Principles To Practices In Latcrit Theory, 1995 To 2008, Francisco Valdes
Articles
No abstract provided.
Toward A Broadband Public Interest Standard, Anthony E. Varona
Toward A Broadband Public Interest Standard, Anthony E. Varona
Articles
No abstract provided.
Invisible Borders: Mapping Out Virtual Law, Kathleen Claussen
Invisible Borders: Mapping Out Virtual Law, Kathleen Claussen
Articles
No abstract provided.
The First Amendment Right Against Compelled Listening, Caroline Mala Corbin
The First Amendment Right Against Compelled Listening, Caroline Mala Corbin
Articles
This Article argues for a new First Amendment right: the right against compelled listening. Free speech jurisprudence - which already recognizes the right to speak, the right to listen, and the right against compelled speech - is incomplete without the right against compelled listening. The same values that underlie the other free speech rights also lead to this right. Furthermore, this claim holds true regardless of whether one conceives of the primary purpose of the Free Speech Clause as creating a marketplace of ideas, enhancing participatory democracy, or promoting individual autonomy. The Article starts by examining the protection afforded to …
Building The Bottom Up From The Top Down, A. Michael Froomkin
Building The Bottom Up From The Top Down, A. Michael Froomkin
Articles
"Bottom up" governance. "Self-organization." These are among the most talismanic virtue-words of modern political discourse. Yet the reality is that in politics, "self-organization" is rare, being hard to initiate and even harder to sustain. As Oscar Wilde once complained about socialism, it "requires too many evenings." Governance as we tend to know it depends primarily on hierarchical institutions, or on close coordination within small groups. True partnerships, conversations among engaged equals, do not seem to scale. Indeed, whether one believes the fundamental problem to be something about the economics of group formation, the iron law of oligarchy, or something in …
Against Practice, Anthony V. Alfieri
Better (Or Worse?) Risk Management Through Technology, Caroline Bradley
Better (Or Worse?) Risk Management Through Technology, Caroline Bradley
Articles
No abstract provided.