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Search Results (3)

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Keywords = E. mauritanicus

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78 pages, 64183 KB  
Article
Old World Fossil Equus (Perissodactyla, Mammalia), Extant Wild Relatives and Incertae Sedis Forms
by Vera Eisenmann
Quaternary 2022, 5(3), 38; https://doi.org/10.3390/quat5030038 - 11 Sep 2022
Cited by 13 | Viewed by 8039
Abstract
Discussion of the phylogenetic relations between Plesippus, Allohippus, and Equus. Descriptions and illustrations of 30 Equid extant and fossil species younger than 2 Ma. Particular attention is given to slender forms with short protocones usually referred to ‘Equus altidens [...] Read more.
Discussion of the phylogenetic relations between Plesippus, Allohippus, and Equus. Descriptions and illustrations of 30 Equid extant and fossil species younger than 2 Ma. Particular attention is given to slender forms with short protocones usually referred to ‘Equus altidens’ from Süssenborn and Untermassfeld (Germany), Akhalkalaki and Dmanisi (Georgia), Pirro (Italy), Venta Micena (Spain) and Aïn Hanech (Algeria). Occurrence of Asinine features in fossil taxa from Africa, Greece, Mongolia, and North-Eastern Siberia. Supplementary Materials include additional discussions and photographs of fossils in particular from Süssenborn (especially those referred to E. altidens and E. marxi by Reichenau) and from Dmanisi from where a new species is described. Full article
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13 pages, 5617 KB  
Article
Mechanical and Thermal Properties of Insulating Sustainable Mortars with Ampelodesmos mauritanicus and Pennisetum setaceum Plants as Aggregates
by Dionisio Badagliacco, Carmelo Sanfilippo, Bartolomeo Megna, Tommaso La Mantia and Antonino Valenza
Appl. Sci. 2021, 11(13), 5910; https://doi.org/10.3390/app11135910 - 25 Jun 2021
Cited by 10 | Viewed by 2978
Abstract
The use of natural fibers in cement composites is a widening research field as their application can enhance the mechanical and thermal behavior of cement mortars and limit their carbon footprint. In this paper, two different wild grasses, i.e., Ampelodesmos mauritanicus, also [...] Read more.
The use of natural fibers in cement composites is a widening research field as their application can enhance the mechanical and thermal behavior of cement mortars and limit their carbon footprint. In this paper, two different wild grasses, i.e., Ampelodesmos mauritanicus, also called diss, and Pennisetum setaceum, also known as crimson fountaingrass, are used as a source of natural aggregates for cement mortars. The main purpose is to assess the possibility of using the more invasive crimson fountaingrass in place of diss in cement-based vegetable concrete. The two plant fibers have been characterized by means of scanning electron microscopy (SEM), helium picnometry and thermogravimetric analysis. Moreover, the thermal conductivity of fiber panels has been measured. Mortars samples have been prepared using untreated, boiled and Polyethylene glycol 4000 (PEG) treated fibers. The mechanical characterization has been performed by means of three point bending and compression tests. Thermal conductivity and porosity have been measured to characterize physical modification induced by fibers’ treatments. The results showed better thermal and mechanical properties of diss fiber composites than fountaingrass one and that fiber treatments lead to a reduction of the thermal insulation properties. Full article
(This article belongs to the Topic Fiber-Reinforced Cementitious Composites)
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35 pages, 15718 KB  
Article
The Interactive Role of Hydrocarbon Seeps, Hydrothermal Vents and Intermediate Antarctic/Mediterranean Water Masses on the Distribution of Some Vulnerable Deep-Sea Habitats in Mid Latitude NE Atlantic Ocean
by Luis Somoza, José L. Rueda, Olga Sánchez-Guillamón, Teresa Medialdea, Blanca Rincón-Tomás, Francisco J. González, Desirée Palomino, Pedro Madureira, Enrique López-Pamo, Luis M. Fernández-Salas, Esther Santofimia, Ricardo León, Egidio Marino, María del Carmen Fernández-Puga and Juan T. Vázquez
Oceans 2021, 2(2), 351-385; https://doi.org/10.3390/oceans2020021 - 26 Apr 2021
Cited by 13 | Viewed by 7140
Abstract
In this work, we integrate five case studies harboring vulnerable deep-sea benthic habitats in different geological settings from mid latitude NE Atlantic Ocean (24–42° N). Data and images of specific deep-sea habitats were acquired with Remoted Operated Vehicle (ROV) sensors (temperature, salinity, potential [...] Read more.
In this work, we integrate five case studies harboring vulnerable deep-sea benthic habitats in different geological settings from mid latitude NE Atlantic Ocean (24–42° N). Data and images of specific deep-sea habitats were acquired with Remoted Operated Vehicle (ROV) sensors (temperature, salinity, potential density, O2, CO2, and CH4). Besides documenting some key vulnerable deep-sea habitats, this study shows that the distribution of some deep-sea coral aggregations (including scleractinians, gorgonians, and antipatharians), deep-sea sponge aggregations and other deep-sea habitats are influenced by water masses’ properties. Our data support that the distribution of scleractinian reefs and aggregations of other deep-sea corals, from subtropical to north Atlantic could be dependent of the latitudinal extents of the Antarctic Intermediate Waters (AAIW) and the Mediterranean Outflow Waters (MOW). Otherwise, the distribution of some vulnerable deep-sea habitats is influenced, at the local scale, by active hydrocarbon seeps (Gulf of Cádiz) and hydrothermal vents (El Hierro, Canary Island). The co-occurrence of deep-sea corals and chemosynthesis-based communities has been identified in methane seeps of the Gulf of Cádiz. Extensive beds of living deep-sea mussels (Bathymodiolus mauritanicus) and other chemosymbiotic bivalves occur closely to deep-sea coral aggregations (e.g., gorgonians, black corals) that colonize methane-derived authigenic carbonates. Full article
(This article belongs to the Special Issue Current Advances and Challenges in Ocean Science—Feature Papers for the Founding of Oceans)
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