Aspects of the palaeontology of Salthill Quarry, Clitheroe, Lancashire (Mississippian), NW England

2020 ◽  
Vol 63 (3) ◽  
pp. pygs2020-003
Author(s):  
Stephen K. Donovan ◽  
Andrew Tenny
Keyword(s):  
Scientific Interest ◽  
Decapod Crustaceans ◽  
Southern Margin ◽  
Rugose Corals ◽  
Special Scientific ◽  
Dense Cluster ◽  
A Site ◽  
A Current

Salthill Quarry, Clitheroe, Lancashire (Mississippian, early Visean, Chadian) is a Site of Special Scientific Interest on the basis of its diverse fauna of invertebrates preserved in a Waulsortian mud mound setting. Important new specimens are described from the limestones and thin mudstones of the Hodder Mudstone Formation, on the southern margin of the quarry. A rare echinoid, archaeocidarid? gen. et sp. indet., is incomplete, but unusually retains the original curvature of the test. A columnal of Bystrowicrinus (col.) westheadi Donovan was derived from a radicular runner and has a dense cluster of radice scars on one side only. The columnal had a wedge-like section, thus suggesting a curvature of the stem. A cluster of solitary rugose corals on the base of a limestone bed includes at least two geniculated specimens in life position, the calice raised above the base of the bed. This is more likely to be due to burial in situ than a current accumulation. Ostiocavichnus Bohatý et al. is not an ichnotaxon, but a palaeopathology identified as a swollen crinoid pluricolumnal; broadly analogous structures are identified in fossil decapod crustaceans.

Risk assessment of coastal flood in a site of special scientific interest

2018 ◽  
Vol 22 (6) ◽  
pp. 1157-1166 ◽  
Author(s):  
Guilherme Clarindo ◽  
M. T. Reis ◽  
C. J. E. M. Fortes ◽  
Germán Rodríguez
Keyword(s):  
Risk Assessment ◽  
Scientific Interest ◽  
Coastal Flood ◽  
Special Scientific ◽  
A Site

scholarly journals Whose Place Is This Anyway? An Actor-Network Theory Exploration of a Conservation Conflict

2017 ◽  
Vol 21 (2) ◽  
pp. 159-169 ◽  
Author(s):  
Julia Bennett
Keyword(s):  
Network Theory ◽  
Actor Network Theory ◽  
Scientific Interest ◽  
Actor Network ◽  
North West ◽  
Benign Neglect ◽  
Special Scientific ◽  
History Of ◽  
Conservation Conflict ◽  
A Site

This is a story of community protest, natural landscape, and the conservation of a small area of National Trust land in North West England. Taking an ethnographic approach into the history of this conflict over the management of nature, this research examines contested perceptions of an area of countryside with the national designation of a “site of special scientific interest.” There is a disjuncture between policy-oriented “official” interpretations of the site as a “site of special scientific interest” needing conservation, which alludes to its historical identity, and local people’s sense of belonging to the place as it has evolved through benign neglect. Using an actor-network theory-based approach to the relationships between the different entities involved at this site, this article examines the different ways of caring for places and the implications of these for future generations.

Structure of Palladium Single-Crystal Films Prepared by Flash Evaporation onto (001) NaCl Substrates

1970 ◽  
Vol 28 ◽  
pp. 456-457
Author(s):  
L. E. Murr ◽  
G. Wong
Keyword(s):  
Single Crystal ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
High Rate ◽  
Flash Evaporation ◽  
Optimum Load ◽  
Single Crystal Films ◽  
Crystal Films ◽  
A Current

Palladium single-crystal films have been prepared by Matthews in ultra-high vacuum by evaporation onto (001) NaCl substrates cleaved in-situ, and maintained at ∼ 350° C. Murr has also produced large-grained and single-crystal Pd films by high-rate evaporation onto (001) NaCl air-cleaved substrates at 350°C. In the present work, very large (∼ 3cm2), continuous single-crystal films of Pd have been prepared by flash evaporation onto air-cleaved (001) NaCl substrates at temperatures at or below 250°C. Evaporation rates estimated to be ≧ 2000 Å/sec, were obtained by effectively short-circuiting 1 mil tungsten evaporation boats in a self-regulating system which maintained an optimum load current of approximately 90 amperes; corresponding to a current density through the boat of ∼ 4 × 104 amperes/cm2.

scholarly journals Development of Fragility Curves for Piping and Slope Stability of River Levees

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 738
Author(s):  
Nicola Rossi ◽  
Mario Bačić ◽  
Meho Saša Kovačević ◽  
Lovorka Librić
Keyword(s):  
Slope Stability ◽  
Fragility Curves ◽  
Safety Margin ◽  
Water Levels ◽  
Flood Event ◽  
Soil Parameters ◽  
Design Code ◽  
A Site ◽  
Insight Into

The design code Eurocode 7 relies on semi-probabilistic calculation procedures, through utilization of the soil parameters obtained by in situ and laboratory tests, or by the means of transformation models. To reach a prescribed safety margin, the inherent soil parameter variability is accounted for through the application of partial factors to either soil parameters directly or to the resistance. However, considering several sources of geotechnical uncertainty, including the inherent soil variability, measurement error and transformation uncertainty, full probabilistic analyses should be implemented to directly consider the site-specific variability. This paper presents the procedure of developing fragility curves for levee slope stability and piping as failure mechanisms that lead to larger breaches, where a direct influence of the flood event intensity on the probability of failure is calculated. A range of fragility curve sets is presented, considering the variability of levee material properties and varying durations of the flood event, thus providing crucial insight into the vulnerability of the levee exposed to rising water levels. The procedure is applied to the River Drava levee, a site which has shown a continuous trend of increased water levels in recent years.

Could social and economic side-effects undermine nature conservation? - An investigation into the socio-economic impact of conservation grazing regimes in Cumbria

2005 ◽  
Vol 2005 ◽  
pp. 232-232
Author(s):  
I. D. Soane
Keyword(s):  
Nature Conservation ◽  
Side Effects ◽  
Economic Impact ◽  
Economic Effects ◽  
Scientific Interest ◽  
Special Scientific ◽  
Socio Economic Impact

English Nature has negotiated substantial stocking reductions (up to 60%) on a number of upland Sites of Special Scientific Interest in Cumbria with the objective of restoring their vegetation quality. Because concerns were raised about possible socio-economic effects of these conservation regimes English Nature asked stakeholders to set out their concerns. Consultants were then requested to review and assess these for English Nature action. This paper summarises specific aspects of the conclusions of this research and the conclusions of a workshop to whom the report was presented.

Sample Preparation of Aluminum Bridge Test Vehicles for Tem In-Situ Crystallographic Studies of Electromigration

1987 ◽  
Vol 115 ◽  
Author(s):  
W. E. Rhoden ◽  
J. V. Maskowitz ◽  
D. R. Kitchen ◽  
R. E. Omlor ◽  
P. F. Lloyd
Keyword(s):  
High Temperature ◽  
Sample Preparation ◽  
Integrated Circuit ◽  
Circuit Reliability ◽  
Test Vehicle ◽  
Aluminum Films ◽  
Current Densities ◽  
Integrated Circuit Reliability ◽  
A Current

IntroductionElectromigration in aluminum films has been identified as an increasing concern for integrated circuit reliability. Electromigration is the mass transport of atoms in a conductor under a current stress. Electromigration occurs in conductors experiencing current densities greater than 105 A/cm2 and is accelerated by high temperature. The damage to aluminum films manifests itself in the formation of voids, hillocks and whiskers along the conductor. This paper presents a test vehicle preparation procedure which can be used to investigate electromigration.

Condensation of the chromatin at the membrane of an apoptotic nucleus is not associated with activation of an endonuclease

1993 ◽  
Vol 104 (2) ◽  
pp. 317-326 ◽  
Author(s):  
F. Oberhammer ◽  
G. Fritsch ◽  
M. Schmied ◽  
M. Pavelka ◽  
D. Printz ◽  
...  
Keyword(s):  
Dna Fragmentation ◽  
Early Event ◽  
Tgf Beta ◽  
Hoechst 33258 ◽  
Nucleolar Structure ◽  
Nuclear Changes ◽  
Rigorous Test ◽  
A Current ◽  
Mouse Lymphoma

A current hypothesis holds that chromatin fragmentation into oligonucleosomal patterns is an early event during apoptosis. In contrast, induction of apoptosis in cultured hepatocytes by TGF-beta 1 was not associated with DNA fragmentation into oligonucleosomes in hepatocyte monolayers and apoptotic fragments. For a more rigorous test of the hypothesis we performed a number of experiments. We compared nuclear changes resulting from TGF-beta 1 with those induced by Ca2+, a known activator of endonuclease. The morphology of apoptotic and Ca(2+)-treated nuclei was different as judged by DNA staining with Hoechst 33258. Likewise, electron microscopy of apoptotic nuclei showed characteristic condensation of the chromatin as well as dissolution of the nucleolar structure and nuclear fragmentation, changes not seen after Ca2+ treatment, after three hours of incubation. Analysis of DNA fluorescence of nuclei by FACS revealed that treatment with Ca2+ reduced the signal by 20%. In contrast, nuclei from TGF-beta 1-treated hepatocytes did not exhibit a reduced signal and after sorting by FACS, apoptotic nuclei remained in the 2N and 4N fractions. The absence of detectable DNA fragmentation in apoptotic nuclei was further verified by in situ nick translation, not only in hepatocytes but also in a mouse lymphoma cell line. From these findings we conclude that activation of an endonuclease is not an early event on the pathway to morphologically recognizable apoptosis.

Sign in / Sign up

Export Citation Format

Share Document