Results 121 to 130 of about 966,566 (260)

Shear behavior of polyurethane foam adhesive improved calcareous sand under large-scale triaxial test

, 2020
The mechanical properties of calcareous sands are very different from those of terrestrial sands as the particle crushing occurs under low confining pressure.
Tao, G, Chen, Q, Nimbalkar, S, Yu, R, Zhang, J, Gaoliang Tao, Sanjay Nimbalkar, Jinwei Zhang, Ronghu Yu, Qingsheng Chen   +9 more
core   +1 more source

Codesigning synergies among ecological, social, and economic benefits with landscape‐scale agri‐environmental schemes

Conservation Biology, EarlyView.
Abstract Global farmland biodiversity is declining rapidly, threatening both natural ecosystems and agricultural production. Although agri‐environmental schemes incentivize farmers to adopt environmentally friendly measures, the spatial mismatch between their local implementation and the landscape‐scale habitat requirements of farmland species has been
Annika L. Hass, Isabelle Arimond, Stefan Schüler, Tobias Plieninger, Sebastian Lakner, Catrin Westphal   +5 more
wiley   +1 more source

A Modified Gear Removal Index (GRI) Method to Support the Management of Abandoned Fishing Gear on Coralligenous Reefs

Fisheries Management and Ecology, EarlyView.
ABSTRACT Abandoned, Lost or otherwise Discarded Fishing Gears (ALDFG) have significant negative effects on marine ecosystems. In the Mediterranean Sea, the impact of ALDFG is particularly relevant on coralligenous reefs. The management of ALDFG focuses primarily on their removal, however this type of intervention may potentially damage the habitat, so ...
Luigi Piazzi, Serena Lomiri, Paolo Tomassetti, Stefano Di Muccio, Maria Francesca Cinti, Paola Gennaro   +5 more
wiley   +1 more source

Discrete element modeling study on CPT penetration of calcareous sand considering dual porosity structure

Yantu gongcheng xuebao
This paper introduces a discrete element numerical simulation method for calcareous sand particles that incorporates dual porosity structures. The method focuses on three key characteristics of calcareous sand in comparison to quartz sand: abundant dual ...
WU Kai 1, CHEN Junxu 1, LIU Songyu 1, SUN Weichen 2
doaj   +1 more source

Giants in the cold: Morphological evidence for vascular heat retention in the viscera but not the skeletal muscle of the basking shark (Cetorhinus maximus)

Journal of Fish Biology, EarlyView.
Abstract Fewer than 50 of the over 30,000 extant species of fishes have developed anatomical specializations facilitating endothermy in specific body regions. The plankton‐feeding basking shark (Cetorhinus maximus), traditionally classified as an ectotherm, was recently shown to have regionally endothermic traits such as centralized red muscle (RM ...
C. Antonia Klöcker, Axel Schlindwein, Martin C. Arostegui, Ingrid M. Bruvold, Joel V. Wernström, Montserrat Martin‐Armas, David W. Sims, Nicolas Straube, Andreas Altenburger, Claudia Junge   +9 more
wiley   +1 more source

Laboratory evaluation of calcareous sand specimens with inclined sedimentary surfaces [PDF]

Sedimentary processes often produce natural and blown calcareous sands that are deposited in inclined and layered formations. These calcareous sands frequently exist in a complex stress state with rotating principal stress axes that result in intricate ...
Chao Liu, Yongning An, Tong Dong, Minsheng Zhang, Hongjun Liu   +4 more
core   +1 more source

Points vs. passes: A comparison between electric fishing techniques for sampling fish populations in upland headwater streams

Journal of Fish Biology, EarlyView.
Abstract Point‐abundance sampling by electric fishing (PASE) was compared with single‐pass (DF1) and triple‐pass depletion sampling (DF3) electric fishing on the same reaches of four headwater streams sampled over multiple years in the Ribble catchment, UK. Juvenile salmonids, mostly brown trout Salmo trutta with some Atlantic salmon S.
Reagan H. Pearce, Martin R. Perrow, Mark L. Tomlinson, Kirsty A. Turner   +3 more
wiley   +1 more source

The habitat use of ariid catfishes in coral reefs in northeastern Brazil

Journal of Fish Biology, EarlyView.
Abstract Ariidae species occur across a wide range of habitats from freshwater to fully marine environments and are typically associated with soft‐bottom substrates. However, they are sometimes associated with hard‐bottom substrates such as coral reefs, but such association is poorly documented.
Romullo Guimarães Lima, Bruno Eleres Soares, Clecio da Silva Pereira, Wesley Ruan Fernandes Bezerra, Paloma Rocha da Silva, Livian Kertleen Pôrto Jesuino, Mariana Vitória dos Santos Gemaque, Carlos Alberto Cavalcanti Soares, Ana Lúcia Vendel, Alexandre P. Marceniuk   +9 more
wiley   +1 more source

Exogenous IAA application alleviated altered physiological and biochemical processes through promoting H‐ATPase and Fe chelate reductase activities in common bean (Phaseolus vulgaris L.) subjected to iron deficiency

Plant Biology, EarlyView.
Exogenous IAA supply enhances the strategy I response in common bean under iron deficiency. Abstract Iron deficiency is a common nutritional disorder observed in calcareous soils, where its resolution by classical methods has shown its failure. However, the exploitation of certain potentialities possessed by crops (rhizosphere acidification, H‐ATPase ...
K. Nsiri, M. Hmissi, N. Baccari, K. Bouzidi, M. J. G. del Rosal, A. Krouma   +5 more
wiley   +1 more source

Stiffness Anisotropy and Micro-Mechanism of Calcareous Sand with Different Particle Breakage Ratios Subjected to Shearing Based on DEM Simulations

Journal of Marine Science and Engineering
Stress-induced anisotropy in calcareous sand can cause an uneven displacement in island reef engineering. In this study, stiffness, as a quantitative indicator, is explored to reveal the stress-induced anisotropy in calcareous sand. Based on the discrete
Yan Gao, Ketian Sun, Quan Yuan, Tiangen Shi   +3 more
semanticscholar   +1 more source