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Displaying Results 76 - 100 of 6164 on page 4 of 247
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A Comparison of Channel Assignment Techniques with Power Control in Ad Hoc Networks
(2009)
DA SILVA, LUIZ
A Comparison of Channel Assignment Techniques with Power Control in Ad Hoc Networks
(2009)
DA SILVA, LUIZ
Abstract:
Multi-channel operation in an ad hoc network can improve robustness and reliability by efficiently managing interference and reducing contention. In this paper, we model four dynamic channel assignment techniques under the same set of assumptions, comparing the efficiency of their power and channel allocations. As the number of channels increases, the differences in the performance of the four techniques become more pronounced. Among the techniques studied, the conflict graph-based technique achieves the highest number of feasible links and the lowest average power consumption.
http://hdl.handle.net/2262/52990
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A common poor fund for the metropolis
(1881)
Dodd, William H.
A common poor fund for the metropolis
(1881)
Dodd, William H.
Abstract:
The Charity Organisation Committee of this Society, in their report in 1876, drew attention to the London system of having a common poor fund for the metropolitan unions, and suggested the desirability of extending this system to the Dublin unions. A reform which was commenced under Lord Palmerston's administration, and carried into effect under Lord Derby's administration, and extended by Mr. Goschen under Mr. Gladstone's administration, by the Metropolitan Poor Amendment Act, 1870, is one deserving consideration; and I propose to inquire if the principle on which it proceeded can be applied to the Dublin unions with advantage to the community.
http://hdl.handle.net/2262/8405
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A common theme in interaction of bacterial immunoglobulin-binding proteins with immunoglobulins illustrated in the equine system
(2008)
OWEN, PETER
A common theme in interaction of bacterial immunoglobulin-binding proteins with immunoglobulins illustrated in the equine system
(2008)
OWEN, PETER
Abstract:
peer-reviewed
The M protein of Streptococcus equi subsp. equi known as fibrinogen-binding protein (FgBP) is a cell wall-associated protein with antiphagocytic activity that binds IgG. Recombinant versions of the seven equine IgG subclasses were used to investigate the subclass specificity of FgBP. FgBP bound predominantly to equine IgG4 and IgG7, with little or no binding to the other subclasses. Competitive binding experiments revealed that FgBP could inhibit the binding of staphylococcal protein A and streptococcal protein G to both IgG4 and IgG7, implicating the Fc interdomain region in binding to FgBP. To identify which of the two IgG Fc domains contributed to the interaction with FgBP, we tested two human IgG1/IgA1 domain swap mutants and found that both domains are required for full binding, with the CH3 domain playing a critical role. The binding site for FgBP was further localized using recombinant equine IgG7 antibodies with single or double point mutations to residues ...
http://hdl.handle.net/2262/28266
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A common variant in MTHFD1L is associated with neural tube defects and mRNA splicing efficiency
(2009)
MOLLOY, ANNE MARIE; SCOTT, JOHN MARTIN
A common variant in MTHFD1L is associated with neural tube defects and mRNA splicing efficiency
(2009)
MOLLOY, ANNE MARIE; SCOTT, JOHN MARTIN
Abstract:
Polymorphisms in folate-related genes have emerged as important risk factors in a range of diseases including neural tube defects (NTDs), cancer, and coronary artery disease (CAD). Having previously identified a polymorphism within the cytoplasmic folate enzyme, MTHFD1, as a maternal risk factor for NTDs, we considered the more recently identified mitochondrial paralogue, MTHFD1L, as a candidate gene for NTD association. We identified a common deletion/insertion polymorphism, rs3832406, c.781-6823ATT(7-9), which influences splicing efficiency and is strongly associated with NTD risk. Three alleles of rs3832406 were detected in the Irish population with varying numbers of ATT repeats: Allele 1 consists of ATT(7), whereas Alleles 2 and 3 consist of ATT(8) and ATT(9), respectively. Allele 2 of this triallelic polymorphism showed a decreased case risk as demonstrated by case-control logistic regression (P=0.002) and by transmission disequilibrium test (TDT) (P=0.001), whereas Allele 1 s...
http://hdl.handle.net/2262/34506
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A Comparative Error Analysis of Audio-Visual Source Localization
(2008)
BOLAND, FRANCIS MORGAN; PITIE, FRANCOIS; KOKARAM, ANIL CHRISTOPHER
A Comparative Error Analysis of Audio-Visual Source Localization
(2008)
BOLAND, FRANCIS MORGAN; PITIE, FRANCOIS; KOKARAM, ANIL CHRISTOPHER
Abstract:
This paper examines the accuracy of audio-video based localization using multiple cameras and multi-microphones. Covariance mapping theory is used to determine the accuracy of audio and video based localization. Both modalities are compared in terms of their ability to provide accurate location estimates of a moving audio-visual source. Relatively, video is found to be significantly more accurate than audio. The problem of audio-video fusion is also examined. The fusion of audio and video location estimates is applied in the audio domain, the video domain and the positional domain. The accuracy of these three fusion strategies for 3D localization are examined from a theoretical basis. The best localization performance is found when fusion is applied in the positional domain. Fusing audio and video data in the video domain is found to exhibit the worst localization performance. This analysis is confirmed by measuring the accuracy of each fusion strategy in localizing a moving audio-v...
http://hdl.handle.net/2262/39301
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Mark
A comparative perspective on trends in income inequality in Ireland
(2000)
Nolan, Brian; Maitre, Bertrand
A comparative perspective on trends in income inequality in Ireland
(2000)
Nolan, Brian; Maitre, Bertrand
Abstract:
Both overall income inequality and inequality in the distribution of earnings rose sharply during the 1980s and 1990s in a number of industrialised countries, notably the UK and the USA. This makes it particularly important to know how the distribution of income in Ireland has been changing over time, how it compares with other countries, and what factors contribute to explaining Ireland’s particular experience. This paper addresses these issues with household survey data allowing us to provide a picture of the distribution of household income in Ireland up to 1997. This allows us to assess for the first time how inequality has been changing during Ireland’s boom. Comparisons are also made with recent estimates for other countries, notably from the European Community Household Panel, so that both Ireland’s current distribution and trends over time can be placed in comparative perspective. A decomposition analysis of changes over time is implemented, and trends in the distribution of...
http://hdl.handle.net/2262/62087
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A comparative study of shear stresses in collagen-GAG and calcium phosphate scaffolds in bone tissue-engineering bioreactors
(2008)
KELLY, DANIEL
A comparative study of shear stresses in collagen-GAG and calcium phosphate scaffolds in bone tissue-engineering bioreactors
(2008)
KELLY, DANIEL
Abstract:
The increasing demand for bone grafts combined with their limited availability and potential risks has led to much new research in bone tissue engineering. Current strategies of bone tissue engineering commonly utilize cell-seeded scaffolds and flow perfusion bioreactors to stimulate the cells to produce bone tissue suitable for implantation into the patient’s body. The aim of this study was to quantify and compare the wall shear stresses in two bone tissue engineering scaffold types (collagen-GAG and calcium phosphate) exposed to fluid flow in a perfusion bioreactor. Based on μCT images, 3D numerical CFD models of the two scaffold types were developed to calculate the wall shear stresses within the scaffolds. For a given flow rate (normalized by the crosssectional area of the scaffolds), shear stress is 2.8-fold higher in the collagen- GAG than the calcium-phosphate scaffold. This is due to the differences in scaffold geometry, particularly the pore size (collagen-GAG pore size ~96...
http://hdl.handle.net/2262/29126
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A comparative study of the compressive, flexural and bond strength of brick masonry.
(2009)
PAVIA, SARA
A comparative study of the compressive, flexural and bond strength of brick masonry.
(2009)
PAVIA, SARA
Abstract:
peer-reviewed
Due to their physical and chemical properties, mortars made with lime are considered to be more compatible with historic fabrics than those made with artificial cements. This paper intends to contribute to the knowledge of the behavior of lime mortar masonry, by exploring the mechanical properties of clay brick masonry bound with both hydraulic and non-hydraulic lime mortars. Masonry wallettes built with a (non-hydraulic) low-strength, calcium lime binder (CL90-s) and a natural-hydraulic-lime of hydraulic strength 5 MPa. (NHL 5) were tested for compressive and flexural strength. The strength of the bond between the mortar and the brick was also measured. The results examine the relationships between the mortar properties and the ultimate strength results of the two types of masonry tested. The paper also compares the mechanical behaviour of the two masonry types under lateral and vertical loads and studies the modes of failure and their relationship with the mortar...
http://hdl.handle.net/2262/33986
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A comparative study of the moisture transfer properties and durability of PC and GGBS mortars
(2007)
PAVIA, SARA
A comparative study of the moisture transfer properties and durability of PC and GGBS mortars
(2007)
PAVIA, SARA
Abstract:
peer-reviewed
Ground Granulated Blast-furnace Slag (GGBS) is commonly used partially replacing Portland cement (PC) in concrete. GGBS is a finely-grained, basic slag with hydraulic properties and a high specific surface, produced as a by product in metallurgy. A number of authors have studied the influence of GGBS addition on the properties of OPC mortars and concrete concluding that GGBS enhances the general performance of PC composites improving workability, reducing creep and drying shrinkage, raising the ultimate compressive strength and reducing bleeding and heat of hydration. GGBS has been reported to improve the pore structure of PC decreasing salt diffusion thus incresing durability. However the most relevant hygric properties of GGBS mortar have not yet been studied. This paper provides an account of the most relevant hygric properties of GGBS and PC mortars. It compares the permeability, capillary suction, water absorption and compressive stregth of PC mortars incorpor...
http://hdl.handle.net/2262/12843
Marked
Mark
A comparative study of the oxygen evolution reaction on oxidized nickel, cobalt and iron electrodes in base
(2010)
LYONS, MICHAEL EDWARD
A comparative study of the oxygen evolution reaction on oxidized nickel, cobalt and iron electrodes in base
(2010)
LYONS, MICHAEL EDWARD
Abstract:
Despite the recent renewal in interest in the oxygen evolution reaction (OER) at transition metal oxide based electrodes in alkaline solution, the details of the mechanism remain controversial. While most studies focus on a particular oxide in isolation, a consistent experimental examination of the oxides of adjacent elements is likely to be fruitful with respect to mechanistic elucidation. In the present comprehensive work, the kinetics of the OER proceeding on the anodic passive oxides of iron, cobalt and nickel are probed using steady state polarisation to ascertain values of the Tafel slope, b, and the OH− ion reaction order, mOH-. The critically important matter of the interplay between the observed OER kinetic parameters and the electrochemistry and structure of the underlying oxide, is explored using cyclic voltammetry. Tafel slopes of b ≈ 46 mV dec−1 observed for pre-reduced Fe and Co anodes, are rationalised on the basis of a “barrier oxide” associated with the inner anhydr...
http://hdl.handle.net/2262/41125
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A comparative study on the treatment performance of a conventional septic tank system and reed bed-soil absorption system receiving domestic effluent
(2009)
O'LUANAIGH, NIALL; JOHNSTON, PAUL; MISSTEAR, BRUCE; PATEL, TITIKSH; GILL, LAURENCE
A comparative study on the treatment performance of a conventional septic tank system and reed bed-soil absorption system receiving domestic effluent
(2009)
O'LUANAIGH, NIALL; JOHNSTON, PAUL; MISSTEAR, BRUCE; PATEL, TITIKSH; GILL, LAURENCE
Abstract:
peer-reviewed
In Ireland, the most prevalent domestic wastewater treatment application in unsewered areas is the conventional septic tank system comprising of septic tank and soil absorption system, the latter more commonly referred to as a percolation area in Ireland. Recent concern has been expressed over the discharge of on-site effluent to highly permeable soils which, although permitted in current Irish EPA guidelines, has generated debate as to whether an insufficient level of treatment in the subsoil’s vadose zone is being achieved. In situations where a septic tank installation is considered unsuitable according to a rigorous site assessment, a secondary treatment system such as a horizontal subsurface-flow reed bed can be installed to improve the effluent quality before discharge to the subsoil. On-site research was thus carried out to assess and compare the treatment capabilities of freely-draining subsoils receiving both septic tank and secondary effluents in tandem w...
http://hdl.handle.net/2262/34967
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A comparison between the English and Irish Poor Laws with respect to the conditions of relief
(1864)
Ingram, John Kells
A comparison between the English and Irish Poor Laws with respect to the conditions of relief
(1864)
Ingram, John Kells
Abstract:
I do not propose in this paper to examine the question, on which so much may be said, of the policy of a more liberal outdoor relief in the present condition of Ireland. My object is simply to state, as correctly as I can, the actual facts—the provisions respecting poor Relief now subsisting in England and Ireland—and to exhibit the differences of the powers vested in the English and Irish authorities, without discussing how far it would be expedient that any such powers should be exercised. I shall quote throughout, as far as possible, the exact words of the several documents to which I appeal, and I shall furnish such references to the sources of my information as will enable any one who wishes to verify every statement I make.
http://hdl.handle.net/2262/6701
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A comparison of conventional septic tank systems and alternative horizontal subsurface-flow reed bed systems in the treatment of domestic wastewater
(2007)
O'LUANAIGH, NIALL
A comparison of conventional septic tank systems and alternative horizontal subsurface-flow reed bed systems in the treatment of domestic wastewater
(2007)
O'LUANAIGH, NIALL
Abstract:
In Ireland, the most prevalent domestic wastewater treatment application in unsewered areas is the conventional septic tank system with percolation area. However, concern has been expressed over on-site effluent discharging into highly permeable soils which, although permitted in current Irish EPA guidelines, has generated debate as to whether an insufficient level of treatment in the subsoil’s unsaturated zone is being achieved. In situations where a septic tank installation is considered unsuitable according to a rigorous site assessment, some form of secondary treatment system can be installed to improve the effluent quality before discharge to the subsoil. Horizontal subsurface-flow reed bed systems are one such technology receiving significant attention recently, being deemed an effective and low-cost alternative for secondary treatment applications. On-site research was thus carried out to assess and compare the treatment capabilities of freely-draining sandy subsoils receivin...
http://hdl.handle.net/2262/36153
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A Comparison of Ensemble and Case-Base Maintenance Techniques for Handling Concept Drift in Spam Filtering
(2005)
Delany, Sarah Jane; Cunningham, Pádraig; Tsymbal, Alexey
A Comparison of Ensemble and Case-Base Maintenance Techniques for Handling Concept Drift in Spam Filtering
(2005)
Delany, Sarah Jane; Cunningham, Pádraig; Tsymbal, Alexey
Abstract:
TCD-CS-2005-19
The problem of concept drift has recently received considerable attention in machine learning research. One important practical problem where concept drift needs to be addressed is spam filtering. The literature on concept drift shows that among the most promising approaches are ensembles and a variety of techniques for ensemble construction has been proposed. In this paper we consider an alternative lazy learning approach to concept drift whereby a single case-based classifier for spam filtering keeps itself up-to-date through a case-base maintenance protocol. We present an evaluation that shows that the case-base maintenance approach is more effective than a variety of ensemble techniques. The evaluation is complicated by the overriding importance of False Positives (FPs) in spam filtering. The ensemble approaches can have very good performance on FPs because it is possible to bias an ensemble more strongly away from FPs than it is to bias the single classifer. ...
http://hdl.handle.net/2262/13439
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A Comparison of Incremental Case-Based Reasoning and Inductive Learning
(1994)
Smyth, Barry; Cunningham, Pádraig
A Comparison of Incremental Case-Based Reasoning and Inductive Learning
(1994)
Smyth, Barry; Cunningham, Pádraig
Abstract:
TCD-CS-94-13
This paper focuses on problems where the reuse of old solutions seems appropriate but the conventional CBR methodology is not adequate because a complete description of the new problem is not available to trigger case retrieval. We describe an information theoretic technique that solves this problem by producing focused questions to fill out the case description. This use of information theoretic techniques in CBR raises the question of whether a standard inductive learning approach would not solve this problem adequately. The main contribution of this paper is an evaluation of how this incremental case-based reasoning compares with a pure inductive learning approach to the same task.
http://hdl.handle.net/2262/12944
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A Comparison of Model-Based and Incremental Case-Based Approaches to Electronic Fault Diagnosis
(1994)
Cunningham, Pádraig; Smyth, Barry
A Comparison of Model-Based and Incremental Case-Based Approaches to Electronic Fault Diagnosis
(1994)
Cunningham, Pádraig; Smyth, Barry
Abstract:
TCD-CS-94-21
CBR seems well suited to fault diagnosis because diagnostic episodes naturally form cases and much of expert competence seems to be based on reuse of old solutions. However, in many diagnosis problems it is difficult to compile a complete case description in advance, consequently the conventional one-shot case retrieval methodology will not work. In this paper we introduce a set of fault diagnosis problems that have this characteristic and we describe a model-based goal-driven system that produces focused questions that request extra information required for diagnosis. The central contribution in this paper is a description of a CBR system that also has this characteristic of producing focused questions in diagnosis. We describe the information theoretic mechanism that allows the CBR system to do this and we present an evaluation of the CBR system and a comparison of the two systems.
http://hdl.handle.net/2262/12780
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A comparison of strain and fluid shear stress in stimulating bone cell responses - a computational and experimental study
(2005)
PRENDERGAST, PATRICK JOHN
A comparison of strain and fluid shear stress in stimulating bone cell responses - a computational and experimental study
(2005)
PRENDERGAST, PATRICK JOHN
Abstract:
Bone undergoes continuous remodeling in response to mechanical loading. However, the underlying mechanisms by which bone cells respond to their changing mechanical environment, that is, strain in the load-bearing matrix or fluid flow through the canalicular network, are not well understood. It has been established in vitro that bone cells respond differently to substrate strain and fluid shear stress treatments. Uncovering the mechanical basis of these differences represents a significant challenge to our understanding of cellular mechanotransduction and bone remodeling. To investigate this problem, we developed a biomechanical model of an adherent cell, to test the hypothesis that bone cells respond differently to 0.6 Pa fluid shear stress and 1,000 mu(epsilon) substrate strain stimulation because of qualitative and quantitative differences in the cellular deformation caused. Fluid shear stress loading conditions resulted in maximum displacements at the apical surface of the cell a...
http://hdl.handle.net/2262/39597
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A Comparison of the Appraisal Process for Auction and Private Treaty Residential Sales
(2010)
GURDGIEV, CONSTANTIN
A Comparison of the Appraisal Process for Auction and Private Treaty Residential Sales
(2010)
GURDGIEV, CONSTANTIN
Abstract:
This paper examines residential sale mechanisms from an appraisal perspective and empirically tests for differences in the valuation process for auctioned and private treaty sales. We test the hypothesis that agents use different criteria in preparing the guide prices for auctioned housing, with an element of under pricing in order to aid in the marketing of the property. The empirical tests are undertaken on a sample of auctioned and private treaty sales in Dublin, Ireland for the period of 1997-2004. We find that the evidence is consistent with the hypothesis that agents do adjust valuations for auctions to attract additional potential bidders.
http://hdl.handle.net/2262/40097
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A comparison of the ECG classification performance of different feature sets
(2000)
REILLY, RICHARD
A comparison of the ECG classification performance of different feature sets
(2000)
REILLY, RICHARD
Abstract:
peer-reviewed
This study investigates the automatic classification of the Frank lead ECG into different disease categories. A comparison of the performance of a number of different feature sets is presented. The feature sets considered include wavelet-based features, standard cardiology features, and features taken directly from time-domain samples of the EGG. The classification performance of each feature set was optimised using automatic feature selection and choosing the best classifier model from linear, quadratic and logistic discriminants. The ECG database used contains 500 cases classed into seven categories with 100% confidence. Using multiple runs of ten-fold cross-validation, the overall seven-way accuracy of different feature sets and classifier model combinations ranged between 60% and 75%. The best performing classifier used linear discriminants processing selected time-domain features. This is also found to be the simplest and fastest classifier to implement
http://hdl.handle.net/2262/20939
Marked
Mark
A comparison of the ECG classification performance of different feature sets
(2000)
REILLY, RICHARD
A comparison of the ECG classification performance of different feature sets
(2000)
REILLY, RICHARD
Abstract:
peer-reviewed
This study investigates the automatic classification of the Frank lead ECG into different disease categories. A comparison of the performance of a number of different feature sets is presented. The feature sets considered include wavelet-based features, standard cardiology features, and features taken directly from time-domain samples of the EGG. The classification performance of each feature set was optimised using automatic feature selection and choosing the best classifier model from linear, quadratic and logistic discriminants. The ECG database used contains 500 cases classed into seven categories with 100% confidence. Using multiple runs of ten-fold cross-validation, the overall seven-way accuracy of different feature sets and classifier model combinations ranged between 60% and 75%. The best performing classifier used linear discriminants processing selected time-domain features. This is also found to be the simplest and fastest classifier to implement
http://hdl.handle.net/2262/19541
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A comparison of the economic position and trend in Éire and Northern Ireland
(1947)
Ó Nualláin, Labhrás
A comparison of the economic position and trend in Éire and Northern Ireland
(1947)
Ó Nualláin, Labhrás
Abstract:
This paper is an abridged version of a thesis presented for the degree of M.Econ.Sc, in the National University of Ireland. In its statistical design the paper consists principally of a comparison of the figures which Dr. J. P. Beddy prepared for the Twenty-Six Counties for his paper " A Comparison of the Principal Economic Features of Éire and Denmark " (read in November, 1943), with figures for the Six Counties. A number of interesting and little known facts emerge from a study of the economic conditions obtaining in each area, the main results of which have been summarised in this paper. For obvious reasons, the abnormal conditions of war-time have been ignored and attention has, for the most part, been directed to the period 1924 - 1938/39.
http://hdl.handle.net/2262/5442
Marked
Mark
A comparison of the law of poor removals and chargeability in England, Scotland, and Ireland, with suggestions of a plan of assimilation, and a remedy for hardships now caused by removals.
(1871)
Hancock, W. Neilson
A comparison of the law of poor removals and chargeability in England, Scotland, and Ireland, with suggestions of a plan of assimilation, and a remedy for hardships now caused by removals.
(1871)
Hancock, W. Neilson
Abstract:
The law of poor removals had its origin in what was properly called the law of settlement. It is now a part of the law of chargeability of districts to support their own poor, and is in fact part of the machinery by which such chargeability is enforced. The ancient law of settlement which allowed people of humble rank to be removed to the place of their birth or settlement, for fear they might become a charge on the rates of the district they came to, was introduced into England and Wales in the reign of King Charles II, and its main provisions continued in force until 1795, and in one class of cases until 1834. The law of chargeability of districts to support their own poor has existed in Scotland since 1579; in England and Wales since 1596; and in Ireland since 1838. The difference of this law in different portions of the United Kingdom forms an important element of the present poor removal question.
http://hdl.handle.net/2262/5439
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A comparison of the national incomes and social accounts of Northern Ireland, the Republic of Ireland and the United Kingdom
(1955)
Carter, C. F.; Robson, Mary
A comparison of the national incomes and social accounts of Northern Ireland, the Republic of Ireland and the United Kingdom
(1955)
Carter, C. F.; Robson, Mary
Abstract:
In March, 1933, Dr. T. J. Kiernan published in the Economic Journal a paper on “The National Income of the Irish Free State in 1926,” following it in June by a paper to this Society on National Expenditure. Since that time the Society has many times renewed its interest in the accounts of national income—most notably in the formidable Symposium on National Income and Social Accounts, opened by Dr. M. D. McCarthy in January, 1952. In April, 1951, Mr Norman Cuthbert read a paper on “Total Civilian Income in Northern Ireland,” which was the first occasion on which the problems of computing components of national income for Northern Ireland had been systematically tackled. In the discussion on Mr. Cuthbert's paper, Dr. Geary and Professor Joseph Johnston both warned their hearers not to attempt to make comparisons between the Six and the Twenty-Six Counties. It is with some trepidation, therefore, that we now proceed to make such comparisons.
http://hdl.handle.net/2262/3946
Marked
Mark
A comparison of the osteogenic potential of adult rat mesenchymal stem cells cultured in 2-D and on 3-D collagen glycosaminoglycan scaffolds.
(2007)
FARRELL, ERIC RAYMOND; PRENDERGAST, PATRICK JOHN; CAMPBELL, VERONICA ANN; BYRNE, ELAINE
A comparison of the osteogenic potential of adult rat mesenchymal stem cells cultured in 2-D and on 3-D collagen glycosaminoglycan scaffolds.
(2007)
FARRELL, ERIC RAYMOND; PRENDERGAST, PATRICK JOHN; CAMPBELL, VERONICA ANN; BYRNE, ELAINE
Abstract:
Adult mesenchymal stem cells (MSCs) have the capability to differentiate along several lineages including those of bone, cartilage, tendon and muscle, thus offering huge potential for the field of tissue engineering. The purpose of this study was to characterise the differentiation capacity of rat MSCs cultured on standard plastic coverslips in 2 dimensions and on a novel collagen glycosaminoglycan scaffold in the presence of a standard combination of osteoinductive factors. Cells were cultured for 3, 7, 14 and 21 days and several markers of osteogenesis were analysed. While the initial response of the cells in 3-D seemed to be faster than cells cultured in 2-D, as evidenced by collagen type I expression, later markers showed that osteogenic differentiation of MSCs took longer in the 3-D environment of the collagen GAG scaffold compared to standard 2-D culture conditions. Furthermore, it was shown that complete scaffold mineralisation could be evoked within a 6 week timeframe. This ...
http://hdl.handle.net/2262/39604
Marked
Mark
A comparison of the principal economic features of Éire and Denmark
(1944)
Beddy, J. P.
A comparison of the principal economic features of Éire and Denmark
(1944)
Beddy, J. P.
Abstract:
Denmark is not only a smaller country than Éire but her climate is less equable, her soils are, in general, lighter and poorer, she has no coal and no water power to compensate for its absence, nor has she any iron ore or other metallic ores to serve as a basis for industrial activities. Yet, in comparison with Éire, she has a bigger population, a greater agricultural output, a more extensive industrial system, a larger foreign trade, a lower national debt, a higher national income and a better standard of living. It is the purpose of this paper to tlnow some light on this unusual economic paradox.
http://hdl.handle.net/2262/5618
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