Institutions
|
About Us
|
Help
|
Gaeilge
0
1000
Home
Browse
Advanced Search
Search History
Marked List
Statistics
A
A
A
Show search options
Hide search options
Search using:
All
Any
None of these
Exact Phrase
in
Keyword (All Fields)
Title
Author
Subject
Institution
Funder
All
Any
None of these
Exact Phrase
in
Keyword (All Fields)
Title
Author
Subject
Institution
Funder
All
Any
None of these
Exact Phrase
in
Keyword (All Fields)
Title
Author
Subject
Institution
Funder
From
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
1970
1969
1968
1967
1966
1965
1964
1963
1962
1961
1960
1959
1958
1957
1956
1955
1954
1953
1952
1951
1950
1949
1948
1947
1946
1944
1943
1942
1941
1940
1939
1938
1937
1936
1935
1934
1933
1932
1931
1930
1929
1928
1927
1925
1923
1920
1919
1917
1915
1914
1913
1912
1911
1909
1908
1907
1906
1905
1904
1903
1902
1901
1900
1899
1898
1897
1896
1895
1894
1893
1892
1891
1890
1889
1888
1887
1886
1885
1884
1883
1882
1881
1880
1879
1878
1877
1876
1875
1874
1873
1872
1871
1870
1869
1867
1866
1865
1864
1862
1861
1859
1858
1857
1856
1855
1854
1853
1852
1851
1849
To
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
1970
1969
1968
1967
1966
1965
1964
1963
1962
1961
1960
1959
1958
1957
1956
1955
1954
1953
1952
1951
1950
1949
1948
1947
1946
1944
1943
1942
1941
1940
1939
1938
1937
1936
1935
1934
1933
1932
1931
1930
1929
1928
1927
1925
1923
1920
1919
1917
1915
1914
1913
1912
1911
1909
1908
1907
1906
1905
1904
1903
1902
1901
1900
1899
1898
1897
1896
1895
1894
1893
1892
1891
1890
1889
1888
1887
1886
1885
1884
1883
1882
1881
1880
1879
1878
1877
1876
1875
1874
1873
1872
1871
1870
1869
1867
1866
1865
1864
1862
1861
1859
1858
1857
1856
1855
1854
1853
1852
1851
1849
Optionally, filter by:
(Leave unchecked to search all fields)
Item Type
Book
Book chapter
Conference item
Contribution to newspaper/magazine
Doctoral thesis
Journal article
Master thesis (research)
Master thesis (taught)
Multimedia
Patent
Report
Review
Working paper
Other
Peer Review Status
Peer reviewed
Non peer reviewed
Unknown
Institution
Dublin City University
Dublin Institute of Technology
NUI Galway
NUI Maynooth
Trinity College Dublin
University College Cork
University College Dublin
University of Limerick
Funder
Enterprise Ireland (EI)
Environmental Protection Agency (EPA)
Health Research Board (HRB)
Higher Education Authority (HEA)
Irish Aid
Irish Research Council for Humanities and Social Sciences (IRCHSS)
Irish Research Council for Science Engineering and Technology (IRCSET)
Marine Institute
Science Foundation Ireland (SFI)
Teagasc
Language
Irish
English
Danish
French
German
Interlingue; Occidental
Italian
Japanese
Spanish; Castilian
Current Search:
'chemistry' in all fields;
834 items found
Sort by
Relevance
Title
Author
Item type
Date
Institution
Peer review status
Language
Order
Ascending
Descending
25
50
100
per page
24
25
26
27
28
29
30
31
32
33
34
Bibtex
CSV
EndNote
RefWorks
RIS
XML
Displaying Results 751 - 775 of 834 on page 31 of 34
Marked
Mark
Investigation of a novel electrocatalyst for hydrogen peroxide reduction and its application to sensing and biosensing.
(2011)
Gonzalez Macia, Laura
Investigation of a novel electrocatalyst for hydrogen peroxide reduction and its application to sensing and biosensing.
(2011)
Gonzalez Macia, Laura
Abstract:
Hydrogen peroxide has, for many years, been shown to be a very important compound due to its wide and varied applications in many industrial processes as well as biological systems. Therefore, its detection and measurement represents an important analytical issue. Traditional methods such as titrimetry or spectrophotometry have more recently been displaced by electrochemical techniques, which have proven to be an inexpensive and effective means of hydrogen peroxide determination. Hydrogen peroxide is also the final product in many biochemical processes, most notably in oxidation reactions employing enzymes such as glucose oxidase where it is used extensively as a reporter molecule which is amenable to electrochemical detection. In this work, a novel electrocatalyst for the reduction of hydrogen peroxide was employed as the foundation for the development of an electrochemical biosensor for glucose determination. Critical to this development was to understand the nature of the novel c...
http://doras.dcu.ie/16363/
Marked
Mark
Development of a room temperature molecular electronics: Direct vs indirect metal complex synthesis
(2011)
Cleary, Laura
Development of a room temperature molecular electronics: Direct vs indirect metal complex synthesis
(2011)
Cleary, Laura
Abstract:
This thesis discusses the possibility of using molecular units as electronic devices as well as the synthesis of a number of such prototypes. This thesis also serves as a comparison between ‘direct’ (complexes as ligands/complexes as metals) and ‘indirect’ (on-complex) synthesis as a method of metal complex synthesis. Chapter 1 introduces the theory behind molecular electronics and solar energy conversion as well as the applicability of transition metal complexes for this role. The target complexes to be synthesised as well as their methods of preparation are also introduced. The experimental methodology used to synthesize and characterize these complexes is detailed in chapter 2. A number of ruthenium and osmium bis-bipyridyl metal complexes incorporating one phenanthroline type ligand have been synthesised using both direct and indirect synthetic methods and are discussed in Chapter 3. The synthesis of a series of ruthenium complexes containing two such ligands via an ‘indirect’...
http://doras.dcu.ie/16309/
Marked
Mark
Investigation of the photochemical properties of ruthenium polypyridyl complexes using high performance liquid chromatography
(2011)
Ahmed, Hamis M. Younis
Investigation of the photochemical properties of ruthenium polypyridyl complexes using high performance liquid chromatography
(2011)
Ahmed, Hamis M. Younis
Abstract:
A focus in this thesis is the study of Investigation the Photochemical Properties of Ruthenium Polypyridyl Complexes using High Performance Liquid Chromatography (HPLC). In chapter 1, topics relevant to the studies presented in this thesis are introduces. An introduction highlights the literature relevant to the topic. In Chapter 2, the experimental and optimisation of conditions of the various methods of characterisation a setup of HPLC are described. A theoretical background for the experimental and computational techniques used is also given. In Chapter 3, we have presented the separation of the tow stereoisomers of [(Ru(bpy)2)2(bpt)](PF6)3 the application of separation of dinuclear ruthenium(II) polypyridyl complexes is examined. In particular the importance of both by semi preparative HPLC using cation exchange column and 1H NMR spectroscopy. after three hours of irradiation at 430 nm the isomers constituting fraction A are converted into the isomers forming fraction B as de...
http://doras.dcu.ie/16384/
Marked
Mark
Substrate Profiling and Aldehyde Dismutase Activity of the Kvβ2 Subunit of the Mammalian Kv1 Potassium Channel
(2010)
Kumari, A.; Ryan, Barry; Dolly, J.; Henehan, Gary
Substrate Profiling and Aldehyde Dismutase Activity of the Kvβ2 Subunit of the Mammalian Kv1 Potassium Channel
(2010)
Kumari, A.; Ryan, Barry; Dolly, J.; Henehan, Gary
Abstract:
<p>Voltage-dependent potassium channels (Kv) are involved in various cellular signalling processes by governing the membrane potential of excitable cells. The cytosolic face of these α subunit-containing channels is associated with β subunits that can modulate channel responses. Surprisingly, the β subunit of the mammalian Kv1 channels, Kvβ2, has a high level of sequence homology with the aldo-keto reductase (AKR) superfamily of proteins. Recent studies have shown that Kvβ2 can catalyze the reduction of aldehydes and, most significantly, that channel function is modulated when Kvβ2-bound NADPH is concomitantly oxidized. As a result, the redox chemistry of this subunit is crucial to understanding its role in K+ channel modulation. The present study has extended knowledge of the substrate profile of this subunit using a single turnover fluorimetric assay. Kvβ2 was found to catalyse the reduction of aromatic aldehyde substrates such as 2, 3 and 4-nitrobenzaldehydes, 4-hydroxybenz...
http://arrow.dit.ie/schfsehart/87
Marked
Mark
The development of inorganic dyes for the application of photocatalytic CO2 reduction
(2011)
Coburn, Nadia
The development of inorganic dyes for the application of photocatalytic CO2 reduction
(2011)
Coburn, Nadia
Abstract:
The work presented in this thesis focuses on the synthesis and characterisation of inorganic dyes which may be used as potential catalysts for CO2 reduction. Chapter 1 is an introductory chapter concerned with introducing the area of CO2 reduction and the complexes developed to date. It begins with a brief overview of the area of CO2 reduction before introducing the significant photocatalysts developed to date for this purpose. The chapter concludes with an introduction to the photocatalysts developed within this research. Chapters 3 and 4 of this thesis describe the synthesis and characterisation of mononuclear and dinuclear ruthenium (II) and rhenium (I) complexes using various synthetic routes and ligands. The experimental methodology (i.e. the materials, methods and instrumentation) used while conducting this research, is described in Chapter 2. The investigation into the preparation of photocatalysts begins in chapter 3 with the development of homonuclear and heteronuclear su...
http://doras.dcu.ie/16571/
Marked
Mark
Mass-spectroscopy and modeling of capacitive coupled hydrogen plasmas
(2011)
Gaman, Cezar
Mass-spectroscopy and modeling of capacitive coupled hydrogen plasmas
(2011)
Gaman, Cezar
Abstract:
This work presents the characterization of a radio-frequency, capacitively coupled, symmetric, hydrogen plasma. Both steady-state operation and the time-prole of the afterglow when RF power is terminated are investigated. Fluxes of the hydrogen ions, H+ , H+2, H+3, at the grounded electrode are measured with an energy-resolved mass spectrometer. Spatial proles of the electron density are measured using a hairpin probe. Particle-in-cell simulations including a complex hydrogen chemistry are performed which enable direct comparison to the experiment. In the steady-state operation, the electron density increases with both power and pressure, and the ion flux magnitudes and energy distributions are found to vary with power. The H+3 ion flux decreases with power and pressure, whereas the H+ and H+2 ion fluxes increase with power and pressure, with approximately equal fluxes at the highest pressure/power combination of 30.0 Pa and 750V peak-to-peak. In conjunction with the PIC results, ...
http://doras.dcu.ie/16627/
Marked
Mark
Sensing technologies for monitoring the marine environment
(2011)
Lau, Kim; Kim, JH; O'Sullivan, T; Stack, E; O'Connor, E; Moyna, A; Regan, Fio...
Sensing technologies for monitoring the marine environment
(2011)
Lau, Kim; Kim, JH; O'Sullivan, T; Stack, E; O'Connor, E; Moyna, A; Regan, Fiona; Diamond, Dermot; Smeaton, Alan F.; O'Connor, Noel E.; Paull, Brett; O'Kennedy, Richard
http://doras.dcu.ie/16697/
Marked
Mark
Autonomous nutrient detection
(2011)
Maher, Damien; Cleary, John; Diamond, Dermot
Autonomous nutrient detection
(2011)
Maher, Damien; Cleary, John; Diamond, Dermot
http://doras.dcu.ie/16703/
Marked
Mark
Solutions to quasi-relativistic multi-configurative Hartree-Fock equations in quantum chemistry
(2011)
Argaez, Carlos; Melgaard, Michael
Solutions to quasi-relativistic multi-configurative Hartree-Fock equations in quantum chemistry
(2011)
Argaez, Carlos; Melgaard, Michael
Abstract:
<p>We establish existence of infinitely many distinct solutions to the multi-configurative Hartree-Fock type equations for N-electron Coulomb systems with quasi-relativistic kinetic energy for the n th electron. Finitely many of the solutions are interpreted as excited states of the molecule. Moreover, we prove existence of a ground state. The results are valid under the hypotheses that the total charge Z of K nuclei is greater than N-1 and that Z is smaller than a critical charge. The proofs are based on a new application of the Lions-Fang-Ghoussoub critical point approach to nonminimal solutions on a complete analytic Hilbert-Riemann manifold.</p>
http://arrow.dit.ie/scschmatart/117
Marked
Mark
Nature of the Band Gap and Origin of the Conductivity of PbO2 Revealed by Theory and Experiment
(2011)
KEHOE, AOIFE; WATSON, GRAEME WILLIAM; SCANLON, DAVID
Nature of the Band Gap and Origin of the Conductivity of PbO2 Revealed by Theory and Experiment
(2011)
KEHOE, AOIFE; WATSON, GRAEME WILLIAM; SCANLON, DAVID
Abstract:
Lead dioxide has been used for over a century in the lead-acid battery. Many fundamental questions concerning PbO2 remain unanswered, principally: (i) is the bulk material a metal or a semiconductor, and (ii) what is the source of the high levels of conductivity? We calculate the electronic structure and defect physics of PbO2, using a hybrid density functional, and show that it is an n-type semiconductor with a small indirect band gap of ∼0.2 eV. The origin of electron carriers in the undoped material is found to be oxygen vacancies, which forms a donor state resonant in the conduction band. A dipole-forbidden band gap combined with a large carrier induced Moss-Burstein shift results in a large effective optical band gap. The model is supported by neutron diffraction, which reveals that the oxygen sublattice is only 98.4% occupied, thus confirming oxygen substoichiometry as the electron source.
http://hdl.handle.net/2262/61490
Marked
Mark
Catalytic (asymmetric) methylene transfer to aldehydes
(2010)
CONNON, STEPHEN; KAVANAGH, SARAH
Catalytic (asymmetric) methylene transfer to aldehydes
(2010)
CONNON, STEPHEN; KAVANAGH, SARAH
Abstract:
An investigation into the poor activity of sulfides as catalysts for sulfonium-ylide-mediated methylene transfer to aldehydes has indicated that ylide formation is the problematic catalytic cycle step. Alkylation with traditional electrophiles does not proceed with sufficient efficiency to allow the sulfide to be used catalytically. Methyl triflate rapidly alkylates cyclic thiolanes under mild conditions, allowing their use in efficient aldehyde epoxidation reactions (in conjunction with phosphazene bases) at loadings as low as 10 mol%.
http://hdl.handle.net/2262/61590
Marked
Mark
Identification of the synthetic cannabinoid R(+)WIN55,212-2 as a novel regulator of IFN regulatory factor 3 (IRF3) activation and IFN-{beta} expression: relevance to therapeutic effects in models of multiple sclerosis.
(2011)
FALLON, PADRAIC GERARD
Identification of the synthetic cannabinoid R(+)WIN55,212-2 as a novel regulator of IFN regulatory factor 3 (IRF3) activation and IFN-{beta} expression: relevance to therapeutic effects in models of multiple sclerosis.
(2011)
FALLON, PADRAIC GERARD
Abstract:
β-Interferons (IFN-βs) represent one of the first line treatments for relapsing-remitting multiple sclerosis, slowing disease progression while reducing the frequency of relapses. Despite this, more effective, well tolerated therapeutic strategies are needed. Cannabinoids palliate experimental autoimmune encephalomyelitis (EAE) symptoms and have therapeutic potential in MS patients although the precise molecular mechanism for these effects is not understood. Toll-like receptor (TLR) signaling controls innate immune responses and TLRs are implicated in MS. Here we demonstrate that the synthetic cannabinoid R(+)WIN55,212-2 is a novel regulator of TLR3 and TLR4 signaling by inhibiting the pro-inflammatory signaling axis triggered by TLR3 and TLR4, whereas selectively augmenting TLR3-induced activation of IFN regulatory factor 3 (IRF3) and expression of IFN-β. We present evidence that R(+)WIN55,212-2 strongly promotes the nuclear localization of IRF3. The potentiation of IFN-β expressio...
http://hdl.handle.net/2262/61589
Marked
Mark
Synthesis and Analysis of Thin Conducting Pyrolytic Carbon Films
(2012)
DUESBERG, GEORG STEFAN; KEELEY, GARETH; KUMAR, SHISHIR; BLAU, WERNER; REZVANI, EHSAN; N...
Synthesis and Analysis of Thin Conducting Pyrolytic Carbon Films
(2012)
DUESBERG, GEORG STEFAN; KEELEY, GARETH; KUMAR, SHISHIR; BLAU, WERNER; REZVANI, EHSAN; NOLAN, HUGO
Abstract:
We report on an adjustable process for chemical vapour deposition of thin films of pyrolytic carbon on inert substrates using an acetylene feedstock. Through modification of the reaction parameters control over film thickness and roughness is attained. These conducting films can be deposited in a conformal fashion, with thicknesses as low as 5 nm and a surface roughness of less than 1 nm. The highly reliable, cost effective and scalable synthesis may have a range of applications in information and communications technology and other areas. Raman and X-ray photoelectron spectroscopies, as well as high resolution transmission electron microscopy are used to investigate the composition and crystallinity of these films. The suitability of these films as electrodes in transparent conductors is assessed through a combination of absorbance and sheet resistance measurements. The films have a resistivity of ∼ 2 × 10-5 Ωm but absorb strongly in the visible range. The electrochemical propertie...
http://hdl.handle.net/2262/61640
Marked
Mark
Autonomous microfluidic analyser for wastewater monitoring
(2011)
Cleary, John; Maher, Damien; Carroll, Gary; Diamond, Dermot
Autonomous microfluidic analyser for wastewater monitoring
(2011)
Cleary, John; Maher, Damien; Carroll, Gary; Diamond, Dermot
Abstract:
An autonomous microfluidic analyser for phosphate in wastewater and environmental waters has been developed and validated in laboratory and field trials. The analyser is based on the molybdenum yellow method for phosphate detection in which a phosphate-containing sample is mixed with a reagent containing ammonium molybdate and ammonium metavanadate in an acidic medium. The yellow-coloured compound which is formed absorbs strongly below 400nm and its absorbance is proportional to the concentration of phosphate in the original sample. The analyser utilizes a microfluidic manifold where mixing, reaction and detection take place. Optical detection is performed using a LED (light emitting diode) light source and a photodiode detector, while wireless communications allow near real-time access to the collected data. The analyser also combines pumping system, power supply, reagent and waste storage, and wireless communications into a compact and portable device. The system has been successf...
http://doras.dcu.ie/16755/
Marked
Mark
Caspase-dependent inactivation of proteasome function during programmed cell death in Drosophila and man
(2004)
MARTIN, SEAMUS JOSEPH; CREAGH, EMMA
Caspase-dependent inactivation of proteasome function during programmed cell death in Drosophila and man
(2004)
MARTIN, SEAMUS JOSEPH; CREAGH, EMMA
Abstract:
The caspase family of cysteine proteases plays a conserved role in the coordinate demolition of cellular structures during programmed cell death from nematodes to man. Because cells undergoing programmed cell death in nematodes, flies, and mammals all share common features, this suggests that caspases target a common set of cellular structures in each of these organisms. However, although many substrates for mammalian caspases have been identified, few substrates for these proteases have been identified in invertebrates. To search for similarities between the repertoires of proteins targeted for proteolysis by caspases in flies and mammals, we have performed proteomics-based screens in Drosophila and human cell lines undergoing apoptosis. Here we show that several subunits of the proteasome undergo caspase-dependent proteolysis in both organisms and that this results in diminished activity of this multicatalytic protease complex. These data suggest that caspase-dependent proteolysis...
http://hdl.handle.net/2262/61750
Marked
Mark
Interchain proteolysis, in the absence of a dimerization stimulus, can initiate apoptosis-associated caspase-8 activation
(2004)
MARTIN, SEAMUS JOSEPH; CREAGH, EMMA
Interchain proteolysis, in the absence of a dimerization stimulus, can initiate apoptosis-associated caspase-8 activation
(2004)
MARTIN, SEAMUS JOSEPH; CREAGH, EMMA
Abstract:
Caspases coordinate the internal demolition of the cell that is seen during apoptosis. Proteolytic processing of caspases is observed during apoptosis, and this correlates with conversion of inactive caspase proenzymes into their active two-chain forms. However, recent studies have suggested that caspase-8 is activated through dimerization and that interchain proteolysis is not sufficient for activation of this caspase. This proposal casts doubt upon whether caspase-8 is productively activated by granzyme B during granule-dependent cytotoxic T lymphocyte or natural killer cell-mediated killing, for example. Contrary to the dimerization model, we show that direct proteolysis of caspase-8 by the cytotoxic T lymphocyte protease granzyme B, or by caspase-6, produces an active enzyme that displays robust proteolytic activity toward synthetic as well as natural caspase-8 substrates. These data suggest that enforced dimerization of caspase-8 zymogens by scaffold proteins such as Fas-associ...
http://hdl.handle.net/2262/61751
Marked
Mark
Smac/Diablo antagonizes ubiquitin ligase activity of inhibitor of apoptosis proteins
(2004)
CREAGH, EMMA; MARTIN, SEAMUS JOSEPH
Smac/Diablo antagonizes ubiquitin ligase activity of inhibitor of apoptosis proteins
(2004)
CREAGH, EMMA; MARTIN, SEAMUS JOSEPH
Abstract:
Inhibitor of apoptosis proteins (IAPs) can block apoptosis through binding to active caspases and antagonizing their function. IAP function can be neutralized by Smac/Diablo, an IAP-binding protein that is released from mitochondria during apoptosis. In addition to their ability to interact with caspases, certain IAPs also display ubiquitin-protein isopeptide ligase activity because of the presence of a RING domain. However, it is not known whether the ubiquitin-protein isopeptide ligase activities of human IAPs contribute to their apoptosis inhibitory activity or whether this IAP property can be modulated through association with Smac/Diablo. Here we demonstrate that the ubiquitin ligase activities of XIAP, and to a lesser extent c-IAP-1 and c-IAP2, are potently repressed through binding to Smac/Diablo. We also show that mutation of the XIAP RING domain rendered this IAP a less effective inhibitor of apoptosis, suggesting that the ubiquitin ligase activity of XIAP contributes to it...
http://hdl.handle.net/2262/61797
Marked
Mark
CARDINAL, a novel caspase recruitment domain protein, is an inhibitor of multiple NF-kappa B activation pathways.
(2001)
CREAGH, EMMA; MARTIN, SEAMUS JOSEPH
CARDINAL, a novel caspase recruitment domain protein, is an inhibitor of multiple NF-kappa B activation pathways.
(2001)
CREAGH, EMMA; MARTIN, SEAMUS JOSEPH
Abstract:
Proteins possessing the caspase recruitment domain (CARD) motif have been implicated in pathways leading to activation of caspases or NF-kappaB in the context of apoptosis or inflammation, respectively. Here we report the identification of a novel protein, CARDINAL, that contains a CARD motif and also exhibits a high degree of homology to the C terminus of DEFCAP/NAC, a recently described member of the Apaf-1/Nod-1 family. In contrast with the majority of CARD proteins described to date, CARDINAL failed to promote apoptosis or NF-kappaB activation. Rather, CARDINAL potently suppressed NF-kappaB activation associated with overexpression of TRAIL-R1, TRAIL-R2, RIP, RICK, Bcl10, and TRADD, or through ligand-induced stimulation of the interleukin-1 or tumor necrosis factor receptors. Co-immunoprecipitation experiments revealed that CARDINAL interacts with the regulatory subunit of the IkappaB kinase (IKK) complex, IKKgamma (NEMO), providing a molecular basis for CARDINAL function. Thus,...
http://hdl.handle.net/2262/61799
Marked
Mark
A reputation and trust based multi-modal sensor network for environmental monitoring
(2010)
O'Connor, Edel; Smeaton , Alan F.; O'Connor, Noel E.; Diamond, Dermot
A reputation and trust based multi-modal sensor network for environmental monitoring
(2010)
O'Connor, Edel; Smeaton , Alan F.; O'Connor, Noel E.; Diamond, Dermot
Abstract:
Water management is an important part of monitoring the natural environment and includes monitoring water quality of both coastal and inland marine locations. This covers the detection of pollution and monitoring the development of harmful algal blooms as well as coastal features and wave patterns. For many years water managers relied on field measurements for coastal monitoring and water quality evaluation. This type of sampling is quite limited on both temporal and spatial scales and is ineffective for capturing dynamic marine events, essential for increased knowledge and better decision making. It also involves costly, time and labour-intensive on-site sampling and data collection. The introduction of new policies such as the EU Water Framework Directive has increased pressure on governments to adopt new methods for continuous monitoring of all water bodies. In recent years, the use of in-situ wireless sensor networks (WSNs) for marine environmental monitoring has been developin...
http://doras.dcu.ie/16113/
Marked
Mark
Real-time sweat analysis: Concept and development of an autonomous wearable micro-fluidic platform
(2011)
Curto, Vincenzo F.; Coyle, Shirley; Byrne, Robert; Diamond, Dermot; Benito-Lopez, Fernando
Real-time sweat analysis: Concept and development of an autonomous wearable micro-fluidic platform
(2011)
Curto, Vincenzo F.; Coyle, Shirley; Byrne, Robert; Diamond, Dermot; Benito-Lopez, Fernando
Abstract:
In this work the development of an autonomous, robust and wearable micro-fluidic platform capable of performing on-line analysis of pH in sweat is discussed. Through the means of an optical detection system based on a surface mount light emitting diode (smLED) and a photodiode as a detector, a wearable system was achieved in which realtime monitoring of sweat pH can be performed during sport activity. We show how through systems engineering, integrating miniaturised electrical components, and by improving the micro-fluidic chip characteristics, the wearability, reliability and performance of a sweat analysis platform has been significantly improved.
http://doras.dcu.ie/16602/
Marked
Mark
Stimuli Responsive Ionogels for Sensing Applications - An Overview.
(2012)
Kavanagh, Andrew; Byrne, Robert; Diamond, Dermot; Fraser, Kevin J.
Stimuli Responsive Ionogels for Sensing Applications - An Overview.
(2012)
Kavanagh, Andrew; Byrne, Robert; Diamond, Dermot; Fraser, Kevin J.
Abstract:
This overview aims to summarise the exiting potential of “Ionogels” as a platform to develop stimuli responsive materials. Ionogels are a class of materials that contain an Ionic Liquid (IL) confined within a polymer matrix. Recently defined as “a solid interconnected network spreading throughout a liquid phase”, the ionogel therefore combines the properties of both its solid and liquid components. ILs are low melting salts that exist as liquids composed entirely of cations and anions at or around 100 0C. Important physical properties of these liquids such as viscosity, density, melting point and conductivity can be altered to suit a purpose by choice of the cation / anion. Here we provide an overview to highlight the literature thus far detailing the encapsulation of IL and responsive materials within these polymeric structures. Exciting applications in the areas of optical and electrochemical sensing, solid state electrolytes and actuating materials shall be discussed. Keywords: ...
http://doras.dcu.ie/16835/
Marked
Mark
Enhanced Quantum Dot Emission for Luminescent Solar Concentrators Using Plasmonic Interaction
(2011)
Chandra, Subhash; Kennedy, Manus; Doran, John; McCormack, Sarah; Chatten, A. J.
Enhanced Quantum Dot Emission for Luminescent Solar Concentrators Using Plasmonic Interaction
(2011)
Chandra, Subhash; Kennedy, Manus; Doran, John; McCormack, Sarah; Chatten, A. J.
Abstract:
<p>Plasmonic excitation enhanced fluorescence of CdSe/ZnS core-shell quantum dots (QDs) in the presence of Au nanoparticles (NPs) has been studied for application in quantum dot solar concentrator (QDSC) devices. We observe that there is an optimal concentration of Au NPs that gives a maximum 53% fluorescence emission enhancement for the particular QD/Au NP composite studied. The optimal concentration depends on the coupling and spacing between neighboring QDs and Au NPs. We show the continuous transition from fluorescence enhancement to quenching, depending on Au NP concentration. The locally enhanced electromagnetic field induced by the surface plasmon resonance in the Au NPs leads to an increased excitation rate for the QDs. This is evidenced by excitation wavelength dependent fluorescence enhancement, where the locally enhanced field around the Au NPs is more pronounced close to the surface plasmon resonance (SPR) wavelength. However, at higher concentrations of Au NPs non...
http://arrow.dit.ie/dubenart/49
Marked
Mark
Protein immobilisation on perpendicularly aligned gold tipped nanorod assemblies
(2012)
O'Sullivan, Catriona; Crilly, Suzanne; Laffir, Fathima R.; Singh, Ajay; Magner, Ed...
Protein immobilisation on perpendicularly aligned gold tipped nanorod assemblies
(2012)
O'Sullivan, Catriona; Crilly, Suzanne; Laffir, Fathima R.; Singh, Ajay; Magner, Edmond; Ryan, Kevin M.
Abstract:
A multi component assembly consisting of the redox protein cytochrome c (cyt c) immobilised onto vertically aligned gold tipped semiconductor nanorods is described. Cyt c was 10 successfully immobilised using a thiol linker. A faradaic response demonstrated that the protein is electroactive in this ultra high density array
SFI contract no. 06/IN.1/I85
HEA programme INSPIRE
IRCSET
http://hdl.handle.net/10344/1986
Marked
Mark
Centimetre scale assembly of vertically aligned and close packed semiconductor nanorods from solution.
(2012)
Ahmed, S.; Ryan, Kevin M.
Centimetre scale assembly of vertically aligned and close packed semiconductor nanorods from solution.
(2012)
Ahmed, S.; Ryan, Kevin M.
Abstract:
Assembly of CdS nanorods (8 × 100 nm) into vertically aligned arrays over very large areas on a substrate either as a monolyaer or severaly multilayers is shown by electrophoresis.
SFI contract no: 06/IN.1/I85
HEA
http://hdl.handle.net/10344/1987
Marked
Mark
Directing semiconductor nanorod assembly into 1D or 2D supercrystals.
(2012)
Sing, Ajay; Gunning, Robert D.; Sanyal, Ambarish; Ryan, Kevin M.
Directing semiconductor nanorod assembly into 1D or 2D supercrystals.
(2012)
Sing, Ajay; Gunning, Robert D.; Sanyal, Ambarish; Ryan, Kevin M.
Abstract:
Coulomb repulsion due to the surface charge on semi-conductor nanorods works against the dipole-dipole attraction that tends to direct the nanorods to self-assemble; the nature of this self10 assembly for CdSe nanorods can be thus altered by pyridine washing, which charges the rods surface – thereby allowing the Coulomb repulsion to tailor the alignment.
SFI Solar Energy Conversion Strategic Research Cluster 07/SRC/B1160
http://hdl.handle.net/10344/1996
Displaying Results 751 - 775 of 834 on page 31 of 34
24
25
26
27
28
29
30
31
32
33
34
Bibtex
CSV
EndNote
RefWorks
RIS
XML
Item Type
Book (2)
Book chapter (7)
Conference item (138)
Doctoral thesis (95)
Journal article (539)
Master thesis (research) (9)
Master thesis (taught) (12)
Report (5)
Other (27)
Institution
Dublin City University (319)
NUI Galway (14)
NUI Maynooth (69)
Trinity College Dublin (249)
University College Cork (7)
University College Dublin (5)
University of Limerick (12)
Dublin Institute of Technology (159)
Peer Review Status
Peer reviewed (640)
Non peer reviewed (185)
Unknown (9)
Year
2012 (35)
2011 (172)
2010 (154)
2009 (123)
2008 (59)
2007 (51)
2006 (32)
2005 (35)
2004 (30)
2003 (15)
2002 (9)
2001 (14)
2000 (19)
1999 (12)
1998 (8)
1997 (10)
1996 (4)
1995 (8)
1994 (10)
1993 (10)
1992 (8)
1990 (1)
1989 (1)
1988 (2)
1985 (1)
Language
English (594)
German (2)
built by Enovation Solutions