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1,063 results for “sharpness”
Figures 11-12 in New species and nomenclatural notes in Lobobrachus Sharp (Coleoptera, Carabidae, Pterostichini)
Figures 11-12. Lobobrachus cleidecostae sp. nov., habitus dorsal. (11) Holotype, male; (12) paratype, female. Scale bar: 10.0 mm.
Data from: Varieties of the highly dispersible and hypervariable tree, Metrosideros polymorpha, differ in response to mechanical stress and light across a sharp ecotone
PREMISE OF THE STUDY: The drivers of isolation between sympatric populations of long-lived and highly-dispersible conspecific plants are not well understood. In the Hawaiian Islands the landscape-dominant tree, Metrosideros polymorpha, displays extraordinary phenotypic differences among sympatric varieties despite high dispersibility of its pollen and seeds, thereby presenting a unique opportunity to investigate how disruptive selection alone can maintain incipient forms. Stenophyllous M. polymorpha var. newellii is a recently evolved tree endemic to the waterways of east Hawai'i Island that shows striking neutral genetic differentiation from its ancestor, wet-forest var. glaberrima, despite sympatry of these forms. We looked for evidence for, and drivers of, differential local adaptation of these varieties across the range of var. newellii. METHODS: For paired populations of these varieties, we compared seedling performance under contrasting light conditions and a strong water current characteristic of the riparian zone. We also conducted a reciprocal transplant experiment and contrasted adult leaf anatomy. KEY RESULTS: Results suggest that the riparian zone is harsh and that selection involving the mechanical stress of rushing water, and secondarily light, lead to significant reciprocal immigrant inviability in adjacent forest and riparian environments. The strongest adaptive divergence between varieties was seen in leaves and seedlings from the site with the sharpest ecotone, coincident with the strongest genetic isolation of var. newellii observed previously. CONCLUSIONS: These findings suggest that disruptive selection across a sharp ecotone contributes to the maintenance of an incipient riparian ecotype from within a continuous population of a long-lived and highly dispersible tree species.
A before/after intervention study to determine impact on life cycle carbon footprint of converting from single-use to reusable sharps containers in 40 United Kingdom NHS Trusts
<p>The purpose of this study was t<span>o compare Global Warming Potential (GWP) of hospitals converting from single-use to reusable sharps containers (SSC, RSC). Does conversion to RSC result in GWP reduction? </span><span>Using BS PAS 2050:2011 principles, a retrospective, before/after intervention quantitative model together with a purpose-designed, attributional "cradle-to-grave" life cycle tool, were used to determine the annual GHG emissions of the two sharps containment systems. Functional unit was total fill-line litres (FLL) of sharps containers needed to dispose of sharps for one-year period in 40 trusts. Scope 1, 2 and 3 emissions were included. Results were workload-normalised using NHS national hospital patient-workload indicators. A sensitivity analysis examined areas of data variability.</span></p> <p><span><b>Setting</b>. Acute-care hospital trusts in United Kingdom.</span></p> <p><span><b>Participants</b>. 40 NHS hospital Trusts using RSC.</span></p> <p><span><b>Intervention</b>. <span>Conversion from SSC to RSC. SSC and RSC usage details in </span><span>17 base-line trusts immediately prior to 2018 were applied to the RSC usage details of the 40 trusts using RSC in 2019</span><span>.</span></span></p> <p><span><span>The comparison of GWP </span>calculated in carbon dioxide equivalents (CO<sub>2</sub>e)<span> generated in the manufacture, transport, service and disposal of</span> 12 months, hospital-wide usage of both containment systems in the 40 trusts. </span><span>The 40 trusts converting to RSC reduced their combined annual GWP by 3267.4 tonnes CO<sub>2</sub>e (-83.9%); eliminated incineration of 900.8 tonnes of plastic; eliminated disposal/recycling of 132.5 tonnes of cardboard; and reduced container exchanges by 61.1%. GHG as kg CO<sub>2</sub>e/1000 FLL were 313.0 and 50.7 for SSC and RSC systems respectively. A sensitivity analysis showed substantial GHG reductions within unit processes could be achieved, however their impact on relevant final GWP comparison varied <5% from base comparison.</span> Adopting RSC is an example of a sustainable purchasing decision that can assist trusts meet NHS GHG reduction targets and can reduce GWP permanently with minimal staff behaviour-change.</p>
FIGURE 13. Oocyclus substillus n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 13. Oocyclus substillus n. sp. holotype. Dorsal and lateral habitus.
FIGURE 8 in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 8. Oocyclus maculatus Sharp holotype. Dorsal and lateral habitus.
FIGURE 10. Oocyclus muscus n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 10. Oocyclus muscus n. sp. holotype. Dorsal and lateral habitus.
FIGURE 7. Oocyclus grandis n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 7. Oocyclus grandis n. sp. holotype. Ventral habitus.
FIGURE 5. Oocyclus funestus n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 5. Oocyclus funestus n. sp. holotype. Ventral habitus.
FIGURE 4. Oocyclus funestus n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 4. Oocyclus funestus n. sp. holotype. Dorsal and lateral habitus.
FIGURE 1 in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 1. Oocyclus brevicornis Sharp lectotype. Dorsal and lateral habitus.
FIGURE 6. Oocyclus grandis n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 6. Oocyclus grandis n. sp. holotype. Dorsal and lateral habitus.
FIGURE 2. Oocyclus catarata n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 2. Oocyclus catarata n. sp. holotype. Dorsal and lateral habitus.
FIGURE 9 in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 9. Oocyclus maculatus Sharp (specimen from Panama). Dorsal and lateral habitus.
FIGURE 3. Oocyclus catarata n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 3. Oocyclus catarata n. sp. holotype. Ventral habitus.
FIGURE 12. Oocyclus sharpi n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 12. Oocyclus sharpi n sp. holotype. Dorsal and lateral habitus.
FIGURE 15 in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 15. Oocyclus vestitus Sharp holotype. Dorsal and lateral habitus.
FIGURE 14. Oocyclus tapanti n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 14. Oocyclus tapanti n. sp. holotype. Dorsal and lateral habitus.
FIGURE 11. Oocyclus ornatus n in A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae)
FIGURE 11. Oocyclus ornatus n. sp. holotype. Dorsal and lateral habitus.
Supplemental Movie for "The basis of sharp spike onset in standard biophysical models"
<p>Simulation of extracellular field during action potential.</p>
Sharp force trauma to a human skull
SFT or hacking on historical specimen. Model extracted from clinical CT data. Shows clear associated fracturing of the inner and outer table of the vault. Source: Objaverse 1.0 / Sketchfab
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