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Search Results: 1 - 10 of 7859 matches for " Graham Oliver "
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Taxonomy of some Galeommatoidea (Mollusca, Bivalvia) associated with deep-sea echinoids
Graham Oliver
European Journal of Taxonomy , 2012, DOI: 10.5852/ejt.2012.12
Abstract: The type species of Axinodon ellipticus Verrill & Bush, 1898 and Kellia symmetros Jeffreys, 1876 are re-described. It is concluded that the two species are not conspecific and that K. symmetros cannot be placed in the genus Axinodon. The family affinity of Axinodon is not resolved, although it is probable that this genus belongs to the Thyasiridae. Kellia symmetros is the type species of Kelliola and is placed in the Montacutidae. Kelliola symmetros is most probably associated with the echinoid Aeropsis rostrata and is not the species previously recorded from North Atlantic Pourtalesia echinoids under the name of Axinodon symmetros. This commensal associated with the North Atlantic Pourtalesia is here described as new and placed in the new genus as Syssitomya pourtalesium gen. nov. sp. nov., Syssitomya gen. nov. differs from all other genera in the Montacutidae by having laminar gill filaments modified for harbouring symbiotic bacteria and it is thus assumed to be chemosymbiotic. A montacutid associated with the hadal Pourtalesia heptneri is described as Ptilomyax hadalis gen. nov. sp. nov.
Chemosymbiotic bivalves from the mud volcanoes of the Gulf of Cadiz, NE Atlantic, with descriptions of new species of Solemyidae, Lucinidae and Vesicomyidae
Graham Oliver,Clara Rodrigues,Marina R. Cunha
ZooKeys , 2011, DOI: 10.3897/zookeys.113.1402
Abstract: The chemosymbiotic bivalves collected from the mud volcanoes of the Gulf of Cadiz are reviewed. Of the thirteen species closely associated with chemosynthetic settings two Solemyidae, Solemya (Petrasma) elarraichensis sp. n. and Acharax gadirae sp. n., one Lucinidae, Lucinoma asapheus sp. n., and one Vesicomyidae, Isorropodon megadesmus sp. n. are described and compared to close relatives of their respective families. The biodiversity and distribution of the chemosymbiotic bivalves in the Gulf of Cadiz is discussed and compared to the available information from other cold seeps in the Eastern Atlantic and Mediterranean. Although there is considerable similarity at the genus level between seep/mud volcano fields in the Eastern Atlantic and Mediterranean, there is little overlap at the species level. This indicates a high degree of endemism within chemosymbiotic bivalve assemblages.
New Approaches to Vaccine Adjuvants: Inhibiting the Inhibitor.
Graham
PLOS Medicine , 2006,
Abstract:
A combined HST/CFH12k/XMM survey of X-ray luminous clusters of galaxies at z~0.2
Oliver Czoske,Jean-Paul Kneib,Ian Smail,Graham P. Smith,Harald Ebeling
Physics , 2000,
Abstract: We describe a project to study a sample of X-ray luminous clusters of galaxies at redshift z~0.2 at several scales (with HST/WFPC2 and CFHT/CFH12k) and wavebands (optical and X-ray). The main aims of the project are (i) to determine the mass profiles of the clusters on scales ranging from ~10 kpc/h to >1.5 Mpc/h using weak and strong lensing, thereby testing theoretical predictions of a ``universal mass profile'', and (ii) to calibrate the M_tot - T_X relation in view of future application in the study of the evolution of the cluster mass function at higher redshift.
An HST Lensing Survey of X-ray Luminous Galaxy Clusters: I. A383
Graham P. Smith,Jean-Paul Kneib,Harald Ebeling,Oliver Czoske,Ian Smail
Physics , 2000, DOI: 10.1086/320557
Abstract: We analyse the mass distribution in the core of A383 (z=0.188), one of 12 X-ray luminous clusters at z~0.2 selected for a comprehensive and unbiased study of the mass distribution in massive clusters. Deep HST imaging reveals a wide variety of gravitationally lensed features in A383, including a giant arc formed from the strongly-lensed images of 2 background galaxies, 2 radial arcs, several multiply-imaged arcs and numerous arclets. Based upon the constraints from the various lensed features, we construct a detailed mass model for the central regions of the cluster, taking into account both the cluster-scale potential and perturbations from individual cluster galaxies. Keck spectroscopy of one component of the giant arc identifies it as a star-forming galaxy at z=1.01 and provides an accurate measurement of the cluster mass within the radius of the giant arc (65kpc) of (3.5+/-0.1)*10^13 Mo. Using the weak shear measured from our HST observations we extend our mass model to determine a mass of (1.8+/-0.2)*10^14 Mo within a radius of 250kpc. On smaller scales we employ the radial arcs as probes of the shape of the mass distribution in the cluster core (r<20kpc), and find that the mass profile is more peaked than a single NFW profile. The optical and X-ray properties of A383 indicate the presence of a central cooling flow, for which we derive a mass deposition rate of >200 Mo/yr. We also use the X-ray emission from A383 to obtain independent estimates of the total mass within projected radii of 65 and 250kpc: (4.0+/-1.4)*10^13 Mo and (1.2+/-0.5)*10^14 Mo, which are consistent with the lensing measurements. [Abridged]
Renewing Oncological Hyperthermia—Oncothermia  [PDF]
Oliver Szasz
Open Journal of Biophysics (OJBIPHY) , 2013, DOI: 10.4236/ojbiphy.2013.34030
Abstract:

Hyperthermia was the very first oncotherapy in human medicine, but its applicability in modern oncology was dubious. The discovery of electromagnetism gave new hope a century ago, however, until up to now, it has been suffering from lack of wide acceptance. Oncological hyperthermia suffers from multiple unsolved medical and technical problems. The accurate selection of malignant tissue and its proper heating in depth are real challenges together with the control and repeatability of the treatments. However, the center of the problems is not technical: the living system tries to keep its homeostatic equilibrium and creates active feedback mechanisms to eliminate or at least correct the constrain heating in depth. The proper reaction on the “gage of battle” has to involve the physiology, handle it complexly together with bioelectromagnetism and update connected technology. The solution has to be the integration of the natural bio-effects into the technological constrains, acting in synergy with the physiological feedback mechanisms, and without forcing effects out of the homeostatic control. The solution lies in strict selection and adequate action in nanoscopic range, without exciting the robust transport-mechanisms to operate against the energy delivery to the tumor. Together with the local

Innovation Clusters and Public Policy—The Case of a Research-Driven Cluster in Germany  [PDF]
Oliver Mauroner
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.512072
Abstract: Regional innovation clusters are spatial concentrations of interconnected firms, suppliers, service providers, state institutions, and research organisation in a particular field of innovation. The stimulation and support of clusters are important agendas for governments and other public actors. Cluster development initiatives are actually an important direction in economic policy, building on earlier efforts in macroeconomic stabilization, privatisation, and market opening, and reducing the costs of doing business. The purpose of this paper is to look on a specific type of innovative clusters in Germany, which are supported by the Fraunhofer Society, one of the leading, partly public-funded organisations for application-oriented research in Europe. Based on an overview over current issues in cluster literature—beginning with Porter 1990 to the point of actual global-value-chain-approach and the concept of knowledge hubs—the particular cluster approach of the German Fraunhofer Society is classified with regard to the academic literature. Fraunhofer clusters are, in the first instance, project clusters compared to simple communication networks. The case study presented in this paper is a valid example for a long-term and well-established industry cluster, which actually opens out in a project-oriented cluster approach. Finally, it is possible to draw practical implications for policy makers and industry regarding the support of regional innovation clusters.
Allometric Equations for Estimating Carbon Stocks in Natural Forest in New Zealand
Peter N. Beets,Mark O. Kimberley,Graeme R. Oliver,Stephen H. Pearce,J. Doug Graham,Andrea Brandon
Forests , 2012, DOI: 10.3390/f3030818
Abstract: Species-specific and mixed-species volume and above ground biomass allometric equations were developed for 15 indigenous tree species and four tree fern species in New Zealand. A mixed-species tree equation based on breast height diameter (DBH) and tree height (H) provided acceptable estimates of stem plus branch (>10 cm in diameter over bark) volume, which was multiplied by live tree density to estimate dry matter. For dead standing spars, DBH, estimated original height, actual spar height and compatible volume/taper functions provided estimates of dead stem volume, which was multiplied by live tree density and a density modifier based on log decay class from field assessments to estimate dry matter. Live tree density was estimated using ratio estimators. Ratio estimators were based on biomass sample trees, and utilized density data from outerwood basic density surveys which were available for 35 tree species sampled throughout New Zealand. Foliage and branch ( < 10 cm in diameter over bark) dry matter were estimated directly from tree DBH. Tree fern above ground dry matter was estimated using allometric equations based on DBH and H. Due to insufficient data, below ground carbon for trees was estimated using the default IPCC root/shoot ratio of 25%, but for tree ferns it was estimated using measured root/shoot ratios which averaged 20%.
A decision aid to assist decisions on disclosure of mental health status to an employer: protocol for the CORAL exploratory randomised controlled trial
Claire Henderson, Elaine Brohan, Sarah Clement, Paul Williams, Francesca Lassman, Oliver Schauman, Joanna Murray, Caroline Murphy, Mike Slade, Graham Thornicroft
BMC Psychiatry , 2012, DOI: 10.1186/1471-244x-12-133
Abstract: In this single blind exploratory RCT in London, a total of 80 participants (inclusion criteria: age ≥18 years, on the caseload of a specialist employment adviser working with people with mental illness; referred to the adviser either from primary care via Improving Access to Psychological Therapies or secondary mental health service; currently seeking or interested in either paid or voluntary employment, and a Decisional Conflict Scale score of 37.5 or greater and stage of decision score 1–5) will be recruited from vocational advice services. After completing a baseline assessment, participants will be randomly assigned to one of two conditions (1) Use of the CORAL Decision Aid (DA) in addition to treatment as usual or (2) Treatment as usual. Those allocated to the DA condition will be given it to read and complete, and the researcher will be present to record the time taken and any content that causes confusion. Intervention participants may keep the decision aid but are discouraged from showing it to other service users to avoid contamination. Follow up interviews will be conducted at 3 months. Primary outcomes are: (i) stage of decision making score; (ii) decisional conflict scores and (iii) employment related outcomes. Secondary analyses will identify predictors of disclosure and qualitative analysis will explore the impact of the intervention.A reduction in decisional conflict regarding disclosure leading to more effective job seeking activity could have significant economic consequences for people with mental illness in terms of employment rates and productivity.NCT01379014 (ClinicalTrials.gov Identifier)People with mental health problems frequently report discrimination in employment. In a US survey 61% (n?=?1,301) felt they had been turned down for a job for which they are qualified when they disclosed their illness [1]. In the UK, 56% (n?=?411) believed that they had definitely or possibly been turned down for a job in the past because of their mental healt
High-Frequency Electron-Spin-Resonance Study of the Octanuclear Ferric Wheel CsFe$_8$
Jan Dreiser,Oliver Waldmann,Graham Carver,Christopher Dobe,Hans-Ulrich Güdel,H?gni Weihe,Anne-Laure Barra
Physics , 2010,
Abstract: High-frequency ($f$ = 190 GHz) electron paramagnetic resonance (EPR) at magnetic fields up to 12 T as well as Q-band ($f$ = 34.1 GHz) EPR were performed on single crystals of the molecular wheel CsFe$_8$. In this molecule, eight Fe(III) ions, which are coupled by nearest-neighbor antiferromagnetic (AF) Heisenberg exchange interactions, form a nearly perfect ring. The angle-dependent EPR data allow for the accurate determination of the spin Hamiltonian parameters of the lowest spin multiplets with $S \leq$ 4. Furthermore, the data can well be reproduced by a dimer model with a uniaxial anisotropy term, with only two free parameters $J$ and $D$. A fit to the dimer model yields $J$ = -15(2) cm$^{-1}$ and $D$ = -0.3940(8) cm$^{-1}$. A rhombic anisotropy term is found to be negligibly small, $E$ = 0.000(2) cm$^{-1}$. The results are in excellent agreement with previous inelastic neutron scattering (INS) and high-field torque measurements. They confirm that the CsFe$_8$ molecule is an excellent experimental model of an AF Heisenberg ring. These findings are also important within the scope of further investigations on this molecule such as the exploration of recently observed magnetoelastic instabilities.
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