40 research outputs found
Late Quaternary glacigenic contourite, debris flow and turbidite process interaction in the Faroe-Shetland Channel, NW European continental margin
No full textSediment drifts and contourite sedimentation in the northeastern Rockall Trough and Faroe-Shetland Channel, North Atlantic Ocean
No full textPhenotypic characterization of the Xenorhabdus bacterial symbiont of a Texas strain of the entomopathogenic nematode Steinernema riobrave, and characterization of the Xenorhabdus bovienii bacterial symbiont of a Newfoundland strain of Steinernema feltiae
No full textTwo bacterial symbionts of entomopathogenic nematodes, one of which originated from Texas, U.S.A., and the other from Newfoundland, Canada, were characterized phenotypically. These strains belonged to the genus Xenorhabdus. The Newfoundland (NF) strain was shown to be X. bovienii but the Texas (TX) strain was not identified at the species level. Four additional cultures of Xenorhabdus were included in the study. These were a strain of X. bovienii (Umea), which was from a nematode of European origin, and strains of X. nematophilus, X.beddingii, and X.poinarii. The tests used in this study indicated identical properties for the NF (North American) and Umea (European) strains of X. bovienii. These could be differentiated from the other strains studied by their failure to grow at 34 degrees C and resistance to low concentrations of a mixture of amoxilline and clavulanic acid. The Xenorhabdus TX strain could be differentiated from the other strains studied by its failure to grow at 10 degrees C. Of the tests done, approximately 30 were useful in distinguishing between the strains and species studied.PT: J; CR: ABUHATAB MA, 1997, J APPL MICROBIOL, V82, P351 AKHURST RJ, 1983, INT J SYST BACTERIOL, V33, P38 AKHURST RJ, 1986, INT J SYST BACTERIOL, V36, P454 AKHURST RJ, 1988, J GEN MICROBIOL 7, V134, P1835 AKHURST RJ, 1990, ENTOMOPATHOGENIC NEM, P75 BOEMARE NE, 1988, J GEN MICROBIOL 3, V134, P751 BOEMARE NE, 1993, INT J SYST BACTERIOL, V43, P249 CABANILLAS HE, 1994, FUND APPL NEMATOL, V17, P219 CABANILLAS HE, 1996, FUND APPL NEMATOL, V19, P273 CABANILLAS HE, 1996, J NEMATOL, V28, P75 DUNPHY GB, 1994, CAN J MICROBIOL, V40, P161 EHLERS RU, 1988, SYST APPL MICROBIOL, V10, P121 FISCHERLESAUX M, 1999, FEMS MICROBIOL ECOL, V29, P149 FISCHERLESAUX M, 1999, INT J SYST BACTERI 4, V49, P1645 FUJIIE A, 1995, APPL ENTOMOL ZOOL, V30, P23 HOLT JG, 1994, BERGEYS MANUAL DETER HOMINICK WM, 1996, BIOCONTROL SCI TECHN, V6, P317 JAGDALE GB, 1996, J NEMATOL, V28, P301 JAGDALE GB, 1997, CAN J ZOOL, V75, P2137 NISHIMURA Y, 1994, WORLD J MICROB BIOT, V10, P207 SMIBERT RM, 1994, METHODS GEN MOL BACT, P607 WOODRING JL, 1988, SO COOPERATIVE SERIE, V331; NR: 22; TC: 2; J9: CAN J MICROBIOL; PG: 5; GA: 335XVSource type: Electronic(1
Geology of the Edinburgh district
No full textThis Open Report describes the geology of the Edinburgh district and surrounding area, and accompanies the BGS Sheet 32E (Edinburgh) sheets, with a Bedrock edition (2003) and a Bedrock and Superficial Deposits edition (2006). The report was originally intended as a Sheet Description, but this series was discontinued before revisions and editing of the manuscript were complete. Some authors retired from BGS, and the manuscript languished in the bottom drawer for a decade. With the new BGS strategy for Maps and Models for the 21st century (BGS 2023), it was decided that the manuscript still represented a valuable contribution to the knowledge of the geology of Edinburgh district. As a result, although published in 2025, the report represents the state of knowledge and understanding of the geology as reached in the early 2000s, and the reader needs to take into account the vintage of the report.
However, this report has been updated in two aspects. The first concerns the re-interpretation of the Devonian-Carboniferous boundary in the district, and indeed in the Midland Valley as a whole. This boundary was previously thought to occur within the Kinneswood formation, but work in the Scottish Borders (Marshall et al. 2018) has shown that the Devonian-Carboniferous boundary occurs at the boundary between the Kinneswood and Ballagan formations. The relevant strata can be reliably correlated to the Edinburgh district, so the chronostratigraphy of these formations has been updated in this report.
Secondly, changes in society and policy related to the green transition and decarbonisation of energy sources renders part of the Applied Geology section as out-of-date. Sections on fossil fuel sections are to a degree redundant, but have been retained for historic purposes. Comments in bold are added to provide more modern context and to reflect recent policy changes. The section on geothermal energy has been extensively updated by Alison Monaghan to match current interest and directions of research.
Alison Monaghan and Teddy Reeves have tracked revisions and corrections, and have extensively edited the manuscript, so that the outstanding work of the original authors Mike Browne, David Gould, Alison Monaghan and Maxine Akhurst can finally be published
The effect of temperature on the fatty acids and isozymes of a psychrotrophic and two mesophilic species of Xenorhabdus, a bacterial symbiont of entomopathogenic nematodes
No full textIn the first part of this study, generation times relative to temperature, together with cardinal and conceptual temperatures, were determined for four strains of Xenorhabdus bacteria that represented three geographically distinct species. The data showed that the NF strain of Xenorhabdus bovienii, like the Umea strain of the same species, is psychrotrophic, while Xenorhabdus sp. TX strain resembles Xenorhabdus nematophila All strain in being mesophilic. In the second part, the capacity of these bacteria to adapt to changes in temperature, shown by changes in fatty acid composition, was investigated. As temperature declined, the proportions of the two major unsaturated fatty acids, palmitoleic (16:1omega7) acid and oleic (18:1 pi9) acid, increased significantly in all of the strains. The proportion of the prevalent saturated fatty acid, which was palmitic acid (16:0), decreased. In the All, NF, and Umea strains, myristic acid (14:0), margaric acid (17:0), cyclopropane (17:0c), and arachidic acid (20:0) decreased with decreasing temperature. In the third part of the study, the synthesis of isozymes in response to changing temperature was investigated. For the seven enzymes studied, the numbers for which isozyme synthesis was temperature related were as follows: five for Umea, four for All, three for NF, and two for TX. Where the study dealt with fatty acid composition and isozyme synthesis, the results show a broad capacity for physiological temperature adaptation among strains of different climatic origin.PT: J; CR: AKHURST RJ, 1980, J GEN MICROBIOL, V121, P303 AKHURST RJ, 1982, J GEN MICROBIOL, V128, P3061 AKHURST RJ, 1990, ENTOMOPATHOGENIC NEM, P75 BLIGH EG, 1959, CAN J BIOCH PHYSL, V37, P911 BOEMARE N, 1997, SYMBIOSIS, V22, P21 BOEMARE NE, 1988, J GEN MICROBIOL 3, V134, P751 DUNPHY GB, 1990, ENTOMOPATHOGENIC NEM, P301 FISCHERLESAUX M, 1999, FEMS MICROBIOL ECOL, V29, P149 FISCHERLESAUX M, 1999, INT J SYST BACTERI 4, V49, P1645 FODOR E, 1997, APPL ENVIRON MICROB, V63, P2826 FORST S, 1996, MICROBIOL REV, V60, P21 GERHARDT P, 1994, METHODS GEN MOL BACT GOW JA, 1984, APPL ENVIRON MICROB, V47, P213 GREWAL PS, 1994, J THERM BIOL, V19, P245 GWYNN RL, 1994, IOBC WPRS WORKING GR, V17, P120 HATAB MAA, 1997, J APPL MICROBIOL, V82, P351 HE HJ, 2000, CAN J MICROBIOL, V46, P618 HEBERT PDN, 1989, METHODOLOGIES ALLOZY JAGDALE GB, 1996, J NEMATOL, V28, P301 JAGDALE GB, 1997, CAN J ZOOL, V75, P2137 JAGDALE GB, 1997, COMP BIOCHEM PHYS A, V118, P1151 JAGDALE GB, 1997, J THERM BIOL, V22, P245 JAGDALE GB, 1998, FUND APPL NEMATOL, V21, P177 JAGDALE GB, 1998, FUNDAM APPL NEMATOL, V20, P147 KAYA HK, 1990, ENTOMOPATHOGENIC NEM, P93 LAWRENCE JV, 1977, APPL ENVIRON MICROB, V33, P482 LEHNINGER AI, 1979, BIOCHEMISTRY LIN JJ, 1995, PHYSIOL ZOOL, V68, P114 MARCUS NH, 1977, COMP BIOCH PHYSL, V58, P109 NEALSON KH, 1990, ENTOMOPATHOGENIC NEM, P271 RATKOWSKY DA, 1982, J BACTERIOL, V149, P1 SMART GC, 1995, J NEMATOL S, V27, P529 SOKAL RR, 1995, BIOMETRY PRINCIPLES, P242 SUMNER JL, 1969, J GEN MICROBIOL, V59, P215 SUUTARI M, 1994, CRIT REV MICROBIOL, V20, P285 YAMAWAKI H, 1979, COMP BIOCH PHYSL B, V62, P89; NR: 36; TC: 0; J9: CAN J MICROBIOL; PG: 10; GA: 430QZSource type: Electronic(1
A new high-resolution aeromagnetic dataset over central Ayrshire : insights into the concealed geology
No full textHigh-resolution aeromagnetic data have been acquired over central Ayrshire as part of a multi-component environmental and resource survey. The data were recorded along easterly orientated flight lines at 200 m separation and show a very marked improvement in resolution over the pre-existing aeromagnetic data for the region. The distribution of the extensive volcanic and intrusive igneous rocks in the near sub-surface is defined more accurately, many new features are recognized and features distinguished in the pre-existing aeromagnetic data are now seen to be laterally continuous. Northwesterly trending lineaments are clearly defined and most can be attributed to Palaeogene dykes, the majority of which are reversely magnetized. Depth to source solutions and modelling suggest that even though the dykes have a limited width at outcrop, their widths increase with depth. Permo-Carboniferous easterly trending dykes are not well resolved in the new aeromagnetic data. This is most likely due to a low amplitude resultant magnetic vector that, combined with the easterly-orientated flight lines, results in few large anomalies. One significant northwesterly trending lineament is interpreted as the trace of the Cleveland Dyke across the Midland Valley. These new data should be of value to the extractive and water industries and assist in the planning and sustainable management of these resources
Whose PARty Was This? The Dilemmas of a Participatory Action Research Process of Evaluating a Social Enterprise
No full textParticipatory action research aims to reduce power differentials in research. In this chapter we problematise the blurred boundaries when a participant becomes a researcher. We re-flect on a PhD undertaken by the first author who was a mem-ber of a social enterprise in the UK that provided user-led re-search and training with a diversity of communities. Experienc-es of ten members of the collective were gathered through creative arts-based methodologies designed to be inclusive. We describe three tensions that arose when trialling participa-tory video production, when data analysis could not be under-taken collaboratively, and when reflecting on the solitary nature of PhD thesis writing. We outline the ways these tensions were worked through and explore ways of writing about participatory research in a PhD thesis
Discriminating faunal assemblages and their palaeoecology based on museum collections : the Carboniferous Hurlet and Index limestones of western Scotland
No full textHistorical collections of Scottish Carboniferous macrofossils stored at the British Geological Survey (BGS), Edinburgh include the sole remaining sources of palaeontological data from numerous localities. Exploratory numerical analyses of such collections from the Hurlet and Index limestones of Ayrshire compare favourably with published qualitative assessments of faunal assemblages and palaeoenvironments; demonstrating that old collections can still be used in modern palaeoecological investigations. Macrofaunas from these formations comprise mainly brachiopods and molluscs and were collected from 67 localities that yielded 20 and 94 samples from the Hurlet and Index limestones respectively. Limitations of the presence/absence data were partly overcome by consolidation and restriction of aspects of the data set. Seriation indicates the lithological and environmental gradients of taxa. Cluster analysis reveals groups of samples linked to lithofacies. Principal Components Analysis (PCA) of diversity data derived from the data set in terms of numbers of genera in higher taxa highlights differences in gross taxonomic composition in terms of trophic structure, lithology and environment.
Supplementary material: lists of localities taxa and sample lithologies used in this study are available at http://www.geolsoc.org.uk/SUP1840
Pathways from pilot to demonstration : how can research advance CO2 geological storage deployment?
No full textAn international workshop was hosted by the British Geological Survey (BGS), supported by the
United Kingdom’s Foreign and Commonwealth Office (FCO), from the 1st to the 3rd of March
2016 at the BGS offices in Keyworth, Nottingham, United Kingdom.
The workshop objectives were to:
Examine how pilot, field laboratory and laboratory projects can inform and advance large-scale
CO2 storage and low-carbon geo-energy resources.
Reinforce the importance of advancing CCS through practical experience at varied relevant scales:
pilots/field labs (testing concepts) and demonstrations (deploy technologies and identify new
technical questions for pilots to examine)
Strengthening international links between field lab, pilot, demonstration and large scale project
operators to make it easier to share lessons learned
Exchange research learning between CCS and other geo-energy disciplines
The workshop outcomes were intended to identify of opportunities for collaboration and
development of outline proposals to advance CCS and geo-energy research through practical
experience and demonstrations.
Workshop invitees included policy makers, demonstration project representatives, academics and
pilot project operators. A total of 75 delegates attended, who represented 46 organisations
including research institutions, industry (national, multinational and suppliers), global and
national CCS networks and trade associations (see attached delegate list – Appendix 1), and a
government representative from UK DECC. Delegates were from 13 countries worldwide
