oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 1 )

2019 ( 189 )

2018 ( 207 )

2017 ( 232 )

Custom range...

Search Results: 1 - 10 of 206588 matches for " Ian P. Maher "
All listed articles are free for downloading (OA Articles)
Page 1 /206588
Display every page Item
Green Microstructural Visualization of Dry-Pressed Spray-Dried Alumina (Al2O3)  [PDF]
Ian P. Maher, Richard A. Haber
Materials Sciences and Applications (MSA) , 2018, DOI: 10.4236/msa.2019.912067
Abstract: Slurry parameters were controlled prior to spray-drying to visualize and govern an understanding of which parameters govern hollow coring and granule morphology during spray-drying. An aqueous alumina using a polyvinyl alcohol binder (PVA) system was analyzed and granules were processed by altering the slurry specific gravity and viscosity value prior to spray-drying. Spray-dried granules were uniaxial dry-pressed at varying moisture contents to show the plasticizing effects of moisture during compaction. A novel characterization method using a field emission electron microscope (FESEM) was implemented to image the green microstructures of the granules and compacted samples. Slurries with a higher specific gravity and viscosity resulted in denser granules with spherical shapes. Viscosity affected the binder segregation during the spray-drying process. Granules stored at higher moisture contents resulted in denser compacts with fewer intergranular pores and cracks along granule boundaries. Using a FESEM resulted in higher resolution for green microstructural characterization.
Homozygosity for a missense mutation in the 67 kDa isoform of glutamate decarboxylase in a family with autosomal recessive spastic cerebral palsy: parallels with Stiff-Person Syndrome and other movement disorders
Clare N Lynex, Ian M Carr, Jack P Leek, Rajgopal Achuthan, Simon Mitchell, Eamonn R Maher, C Geoffrey Woods, David T Bonthon, Alex F Markham
BMC Neurology , 2004, DOI: 10.1186/1471-2377-4-20
Abstract: Here we present data that refine this locus to a 0.5 cM region, flanked by the microsatellite markers D2S2345 and D2S326. The minimal region contains the candidate gene GAD1, which encodes a glutamate decarboxylase isoform (GAD67), involved in conversion of the amino acid and excitatory neurotransmitter glutamate to the inhibitory neurotransmitter γ-aminobutyric acid (GABA).A novel amino acid mis-sense mutation in GAD67 was detected, which segregated with CP in affected individuals.This result is interesting because auto-antibodies to GAD67 and the more widely studied GAD65 homologue encoded by the GAD2 gene, are described in patients with Stiff-Person Syndrome (SPS), epilepsy, cerebellar ataxia and Batten disease. Further investigation seems merited of the possibility that variation in the GAD1 sequence, potentially affecting glutamate/GABA ratios, may underlie this form of spastic CP, given the presence of anti-GAD antibodies in SPS and the recognised excitotoxicity of glutamate in various contexts.Cerebral palsy (CP) is a term used to define a group of disorders [1] characterized by a non-progressive abnormality of posture and movement, resulting from defects in the developing nervous system [2]. Approximately 1 in 250 to 1000 live births presents with CP, making it one the commonest congenital disabilities [3]. Many different aetiological factors have been implicated. Among preterm infants, the incidence of CP generally increases with decreasing gestational age and the origin in most cases may be traced to post/peri-partum periventricular leukomalacia and intraventricular/periventricular haemorrhage [4]. Conversely in term infants perinatal causes can only confidently be attributed where there is documented perinatal hypoxia/acidosis and clinical encephalopathy in the early neonatal period [5]. Prenatal risk factors in the aetiology of CP include low birth-weight, intrauterine infection and exposure to teratogens during pregnancy [6,7]. The cause in a large prop
Modeling and Numerical Simulation of Wings Effect on Turbulent Flow between two contra-rotating cylinders  [PDF]
Maher Raddaoui
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.25048
Abstract: Many industries in the world take part in the pollution of the environment. This pollution often comes from the reactions of combustion. To optimize these reactions and to minimize pollution, turbulence is a funda- mental tool. Several factors are at the origin of turbulence in the complex flows, among these factors, we can quote the effect of wings in the rotating flows. The interest of this work is to model and to simulate numeri- cally the effect of wings on the level of turbulence in the flow between two contra-rotating cylinders. We have fixed on these two cylinders eight wings uniformly distributed and we have varied the height of the wings to have six values from 2 mm to 20 mm by maintaining the same Reynolds number of rotation. The numerical tool is based on a statistical model in a point using the closing of the second order of the transport equations of the Reynolds stresses (Reynolds Stress Model: RSM). We have modelled wings effect on the flow by a source term added to the equation tangential speed. The results of the numerical simulation showed that all the average and fluctuating variables are affected the value of the kinetic energy of turbulence as those of Reynolds stresses increase with the height of the wings.
Laparoscopic Surgical Techniques for Endometriosis and Adenomyosis
C. Wood,P. Maher,R. Woods
Diagnostic and Therapeutic Endoscopy , 2000, DOI: 10.1155/dte.6.153
Abstract: The details of surgical techniques for laparoscopic removal of endometriosis and adenomyosis are described briefly in textbooks and gynaecological journal articles. We have described a wide variety of techniques for the various procedures required in the treatment of endometriosis and adenomyosis, excluding hysterectomy. The principles are based upon those used in removal of primary cancer lesions. The limitations of thermal ablation are discussed, and evidence of improved results after excision of lesions have been submitted for publication.
Trends in cow numbers and culling rate in the Irish cattle population, 2003 to 2006
P Maher, M Good, SJ More
Irish Veterinary Journal , 2008, DOI: 10.1186/2046-0481-61-7-455
Abstract: Cows are the main economic production units of Ireland's cattle industry. Therefore, demographic information, including overall numbers and survival rates, are relevant to the Irish agricultural industry. However, few data are available on the demographics of cows within a national population, either in Ireland or elsewhere, despite the recent development of comprehensive national cattle databases in many EU Member States. Previous studies of culling in Ireland have focused on small numbers of animals in well-managed herds with good on-farm records. Studies by Crosse and O'Donovan [10] and Crosse et al. [9] were directed more at the 'reasons' for culling in well-managed dairy herds. A similar approach has generally been described in published studies from other countries.The policy environment throughout the European Union may affect culling decisions. In 2003, reforms to the Common Agricultural Policy (CAP) led to the introduction of direct payments and the principle of decoupled support [3]. Decoupled payments are typically based on the historical use of an input like land so benefits are capitalised into the value of the asset, benefiting the owner of the land, and in Ireland the vast majority of 'owners' are the actual farmers of the land. It is widely anticipated that decoupling will decrease cattle numbers over time. The national movement database (the Cattle Movement Monitoring System, CMMS), proves an opportunity to investigate the demographics of cows within the national herd. Summary information from this database have been prepared annually [5-8], including figures for slaughter and on-farm deaths. However, to this point, these relate to the full population but not separately for cows. Using CMMS, this study has sought: to determine the rate of cow culling from the national herd; to determine the rate of culling by type (dairy, beef), age, method of exit, date of exit and interval between last calving and exit; to calculate the national cow on-farm mortal
Genetic parameters of wool colour and skin traits in Corriedale sheep
Benavides, M.V.;Maher, P.;
Genetics and Molecular Biology , 2003, DOI: 10.1590/S1415-47572003000300009
Abstract: clean wool colour (cwc) is an important wool price determinant and has been related to suint characteristics, i.e. sudoriparous and sebaceous gland secretions, such as suint percentage and suint k content. in this work heritability, phenotypic and genetic correlations among wool colour and skin traits were examined. the genetic estimates were assessed by restricted maximum likelihood (reml) procedures using average information algorithm (aireml) in a corriedale flock. the traits analysed were wool colour traits (cwc), yellow predictive colour (ypc), and visual score; suint traits such as suint percentage and potassium and sodium concentrations in suint, and physiological traits such as potassium and sodium concentrations in the skin, including plasma and red blood cells. the objectives of this study were to assess phenotypic and genetic correlations between wool colour and skin traits, and to find the suitability of these traits as indirect selection criteria for clean wool colour. suint traits were highly genetically correlated to ypc. suint k, but not suint percentage, was found to have a high genetic correlation with cwc. skin k, visual score, ypc and suint k were amongst the best indirect selection criteria for clean wool colour. however, selection using these traits was expected to reduce cwc from 52% to 49% of that estimated under direct selection.
Genetic parameters of wool colour and skin traits in Corriedale sheep
Benavides M.V.,Maher P.
Genetics and Molecular Biology , 2003,
Abstract: Clean wool colour (CWC) is an important wool price determinant and has been related to suint characteristics, i.e. sudoriparous and sebaceous gland secretions, such as suint percentage and suint K content. In this work heritability, phenotypic and genetic correlations among wool colour and skin traits were examined. The genetic estimates were assessed by Restricted Maximum Likelihood (REML) procedures using average information algorithm (AIREML) in a Corriedale flock. The traits analysed were wool colour traits (CWC), yellow predictive colour (YPC), and Visual Score; suint traits such as suint percentage and potassium and sodium concentrations in suint, and physiological traits such as potassium and sodium concentrations in the skin, including plasma and red blood cells. The objectives of this study were to assess phenotypic and genetic correlations between wool colour and skin traits, and to find the suitability of these traits as indirect selection criteria for clean wool colour. Suint traits were highly genetically correlated to YPC. Suint K, but not suint percentage, was found to have a high genetic correlation with CWC. Skin K, Visual Score, YPC and suint K were amongst the best indirect selection criteria for clean wool colour. However, selection using these traits was expected to reduce CWC from 52% to 49% of that estimated under direct selection.
(E)-2,3-Bis[(E)-benzylideneamino]but-2-enedinitrile
Matthew P. Akerman,Sarah J. Maher
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812005363
Abstract: The asymmetric unit of the title compound, C18H12N4, consists of a half-molecule, where the two halves of the molecule are related by inversion symmetry. The molecule is effectively planar, with the largest deviation from the 22-atom mean plane, measuring 0.024 (2) , exhibited by the ortho-C atom of the phenyl ring. The crystal structure exhibits π-stacking, with an interplanar spacing of 3.431 (3) .
Polymer Supported Lipid Bilayers  [PDF]
Ian P. McCabe, Martin B. Forstner
Open Journal of Biophysics (OJBIPHY) , 2013, DOI: 10.4236/ojbiphy.2013.31A008
Abstract:

Lipid bilayers are some of the most fascinating self-assembled structure in living nature. Not only do they serve as the protective boundary of cells and their internal organelles, they also organize and host major parts of the biochemical machinery for cellular communication and transmembrane transport. To study aspects of cellular membranes in a controlled manner, solid supported planar bilayers have served as reliable tools for many decades. They have been used in a large variety of studies ranging from fundamental investigations of membranes and their constituents to the dissection of cellular signaling mechanisms. However, there are limitations to these systems and recently a class of new systems in which the lipid bilayer is supported on a soft, polymer cushion has emerged. Here, we review the different polymer cushioned bilayer systems and discuss their manufacture and advantages.

Globalization Impacts on Chinese Politics and Urbanization  [PDF]
Jamie P. Halsall, Ian G. Cook
Chinese Studies (ChnStd) , 2013, DOI: 10.4236/chnstd.2013.22012
Abstract: The aim of this paper is to critically explore the complex debates on the contemporary growth of China’s urban economies. It has been well documented that China is the second largest economy in the world and is seen to be a major player in the financial markets. Over the last decade China has experienced a dramatic urban transformation and globalization is a key factor in the change in China from Maoist production cities to Dengist cities of consumption, albeit with a strong export-oriented production element. As this paper will argue, without the impact of Globalization, the recent development of China as a key economic power could not have taken place. The findings of this research revealed however, that the Chinese State has also played a key role, intertwined as it is with the Chinese Communist Party (CCP).
Page 1 /206588
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.