6,503 research outputs found
Henry N. Hooper Bell, 1857
No full textOne bell, cast by Henry N. Hooper and Company in Boston, 1857. Originally purchased to serve as the tower bell in the center of the Texas A&M University at Galveston campus, the bell is currently displayed in the library. Robbie de Vries and twelve other donors acquired the bell by auction in 1987
Abyssosdiskos Ekins & Erpenbeck & Goudie & Hooper 2020, gen. nov.
No full textGenus Abyssosdiskos gen. nov. urn:lsid:zoobank.org:act: 84647CBC-DFA8-49E0-9264-51F1033E4DE2 Type species: Cladorhiza pentaeiros Ekins, Erpenbeck & Hooper, 2020 Definition: Cladorhizidae with anchorate anisochelae and an upward facing disc morphology. Etymology: Abyssos L. the deep sea, diskos Gr. Dish (m.)Published as part of Ekins, Merrick, Erpenbeck, Dirk, Goudie, Lisa & Hooper, John N. A., 2020, New carnivorous sponges and allied species from the Great Australian Bight, pp. 240-266 in Zootaxa 4878 (2) on page 243, DOI: 10.11646/zootaxa.4878.2.2, http://zenodo.org/record/442497
Anatomy of a volcano
No full textThe Icelandic volcano Eyjafjallajökull caused major disruption in European airspace last year. According to his co-author, Freysteinn Sigmundsson, the reconstruction published in Nature six months later by aerospace engineering researcher, Dr Andy Hooper, opens up a new direction in volcanology. “We want to see how the magma moves inside the volcano
Bathytentacular Ekins & Erpenbeck & Goudie & Hooper 2020, gen. nov.
No full textGenus Bathytentacular gen. nov. urn:lsid:zoobank.org:act: 3AEDBC67-5141-4D79-A4B9-A6EF9D5F5592 Type species: Cladorhiza moniqueae Ekins, Erpenbeck & Hooper, 2020. Definition: Cladorhizidae with anchorate anisochelae and a pedunculate teardrop shaped body, with tentacular processes on the trailing edge. Etymology: Bathy Gr. deep, tentacular L. (pl.) tentacles (f.)Published as part of Ekins, Merrick, Erpenbeck, Dirk, Goudie, Lisa & Hooper, John N. A., 2020, New carnivorous sponges and allied species from the Great Australian Bight, pp. 240-266 in Zootaxa 4878 (2) on page 244, DOI: 10.11646/zootaxa.4878.2.2, http://zenodo.org/record/442497
Cerviconia cuspidifera Rützler & Hooper 2000, n. comb.
No full textCerviconia cuspidifera (Lamarck, 1815) n. comb. Alcyonium cuspidiferum Lamarck, 1815: 168. Spirastrella cuspidifera (Lamarck, 1815). – Topsent 1933: 41. Spheciospongia cuspidifera (Lamarck, 1815). – Vicente et al. 1991: 217. – Rützler 1997: 1393. – Wiedenmayer 1977: 117, as Xestospongia tierneyi (Laubenfels, 1953). MATERIAL EXAMINED. — Holotype at MNHN labelled “151. Alcyonium cuspidiferum Lmk, LBIM DT 652” and specimens examined by Rützler in Vicente et al. (1991: 217). TAXONOMIC REMARKS The type species was recently described and illustrated in detail (Vicente et al. 1991: 217, figs 3c, d, 4; as Spheciospongia). In summary, Cervicornia cuspidifera forms erect, single or branching staghorn-like hollow cylinders which taper toward the top and are anchored in carbonate sand by a flaring base with root-like extensions. The epibenthic fistules are smooth to the touch, corrugated in places, without macroscopic openings (except for barnacle burrows in some specimens), and measure about 30 × 5 cm; they are cork-like in consistency and walnut brown owing to the presence of unusual zooxanthellae (Rützler 1990). The fistules have an ectosomal histology although a few choanocyte chambers are found here and there. The buried base is tan, incorporates sand and shell particles, is riddled by large canals, and extends deep into the substrate. The base consists primarily of choanosome. Spicular tracts with felted spicules in-between support the walls of the fistules; in the base the spicules are criss-cross, without orientation. Megascleres are tylostyles but modifications include strongyles, styles, and tylostrongyles; percentage-distribution of these types in a specimen varies between geographic regions. Megascleres measure about 330- sponge in the family Placospongiidae. Spicules of the cortical armor, the main distinguishing characteristics, are derived from amphiaster-like spiny rhabds which develop into dumbbell-shaped amphisterrasters. These unusual microscleres are named amphinolasters to set them apart from the monocentric selenasters of the related genus Placospongia and from the euaster-derived sterrasters of the Geodiidae. The erect branching and partially endopsammic sponge “ Alcyonium ” cuspidiferum Lamarck does not fit into either of the two genera, Spirastrella and Spheciospongia, it was assigned to since the original description. It is now placed into a new genus Cervicornia among massive Clionidae with special inhalant structures. This group has limestone excavating capacity but is without an alpha (chamber-excavating) stage. Cervicornia has staghorn-like, ectosomal inhalant fistules and an endopsammic choanosome. The related Spheciospongia is epibenthic, cake-shaped, and has pore sieves for inhalant specialization.Published as part of Rützler, Klaus & Hooper, John N. A., 2000, Two new genera of hadromerid sponges (Porifera, Demospongiae), pp. 337-344 in Zoosystema 22 (2) on pages 342-344, DOI: 10.5281/zenodo.540018
Chondrocladia (Chondrocladia) zygainadentonis Ekins, Erpenbeck & Hooper 2020
No full textChondrocladia (Chondrocladia) zygainadentonis Ekins, Erpenbeck & Hooper, 2020 Figures 2–3 Material examined: Holotype QM G337557, off Gladstone, Coral Sea, Queensland, Australia, Station 12, - 23.6311944 – -23.65900, 154.659694 – 154.643806, 1770– 1761 m, Beam Trawl, Coll. Merrick Ekins on RV Investigator, Cruise IN2017 _ V03, Sample 128-111, 13/vi/2017. Other Material: QM G339304, Ribbon Reef 5, Canyon 8, Great Barrier Reef Queensland, Australia, - 15.36606511, 145.8662834, 1526.89 m, Site: S0378, Sample: 55, ROV SuBastian, Coll. Jeremy Horowitz on RV FALKOR, cruise FK200802, 14/8/2020 Distribution: This species is presently known only from the Coral Sea and Great Barrier Reef, off the Northeast coast of Queensland, bathyal depth. Description: Growth form: An erect delicate single-axis arborescent sponge resembling a tree consisting of a cylindrical stem with five columns of branches (Figs. 2 A, B). The sponge including the roots is 12 cm in height, the branches are up to 4 cm in length and the roots are also up to 4 cm in length. The stem base is short, only 12 mm in length and 2 mm in width. Each branch contains four alternate filaments (Fig. 2 C). The branches are between 0.5 and 1 mm in thickness. The filaments are up to 2.5 mm long and between 80 and 270 µm wide. Colour: White in situ, on deck and preserved in ethanol. Ectosomal skeleton: The ectosomal skeleton consists of a thin membrane containing chelae (Fig. 2 E). Choanosomal skeleton: The choanosomal skeleton consists of bundles of mycalostyles longitudinally arranged in the axis of the stem. The stem also contains the subtylostyles and rare thin subtylostyles. The filaments consist of longitudinally arranged subtylostyles, with radial arrangement for support against the stem. The roots consist of the same combination of styles bundled together as in the stem, but also include a smaller blunt style (Fig. 2 F). Megascleres: Larger mycalostyles with tapering ends and a blunt point (872-(1109)- 1280 x 14.9–(23.9)–36.0 µm, n=46) (Fig. 3 C, D). Subtylostyles with slightly swollen bases and tapering points (459–(558)–669 x 8.4– (12.2)–7.51 µm, n=34) (Figs. 3 E, F). Rare thin subtylostyles (479–(763)– 1060 x 3.0–(4.4)–6.3 µm, n=5) (Figs. 3 I, J). In the roots are blunt styles (149–(256)–371 x 1.0–(3.8)–7.1 µm, n=8) (Figs. 3 G, H). Microscleres: Abundant small tridentate unguiferate isochelae with equal sized alae (25.5– (33.9)–42.9 x 2.1– (3.2)–4.5 µm, n=41) (Fig. 3 A). Uncommon large unguiferate isochelae, with variable dentation (often 3), 44.1– (53.9)–67.9 x 3.3–(5.7)–7.1 µm, n=16 (Fig. 3 B). Rare thin sigmas 23.1–(27.1)–31.1 x 0.9–(1.0)–1.2 µm, n=2 (Fig. 3 K). Rare sigmancistras 24.7–(26.5)–27.7 x 1.9–(2.5)–3.3 µm, n=4 (Fig. 3 L). Remarks: Despite the appearance of the holotype resembling the gross morphology of Cladorhiza abyssicola Sars, 1872, C. (C.). zygainadentonis has isochelae, and it also lacks sigmas and sigmancistras. The presence of isochelae indicates it clearly belongs in Chondrocladia, as illustrated in the figures and the diagnosis of Hestetun et al. (2016a) and Ekins et al. (2020b). This species is Chondrocladia (Chondrocladia) zygainadentonis Ekins et al., 2020a, with the unique unguiferate anchorate isochelae. The only other Chondrocladia (Chondrocladia) with some sort of arborescent morphology is Chondrocladia (Chondrocladia) dichotoma Lévi, 1964; but that species has quadridentate unguiferate isochelae. The redescription of C. (C.). zygainadentonis includes the addition of the styles in the root like appendages.Published as part of Ekins, Merrick & Hooper, John N. A., 2023, New carnivorous sponges from the Great Barrier Reef, Queensland, Australia collected by ROV from the RV FALKOR, pp. 435-471 in Zootaxa 5293 (3) on pages 437-440, DOI: 10.11646/zootaxa.5293.3.2, http://zenodo.org/record/796127
Veelgejaagt, Stellenbosch (Winelands District)
No full textThe Veelgejaagt Estate in Stellenbosch has a bell of good seize. Below the shoulder and in between two pairs of moulding wires one reads CAST BY H N HOOPER & CO BOSTON 1856. Above the sound bow are three more moulding wires and two on the nose. At first sight, the bell is well made and hangs in a sturdy iron top frame. However, a closer look reveals that the bell has been severely cracked. Actually, there are signs that the parts of the bell have been glued back after they came off, probably after a fall. One result of this repair is that the bell has no sound whatever.
This is a pity since the bell is the first bell from the Hooper company from the USA. Henry Northey Hooper (1799-1865) was very active in his homeland with the production of civil war artillery, bells and chimes. A number of his bells, dated in the period 1838 to 1871, can still be found in New England. Later, Hooper turned also to the production of bronze statues and field guns and some examples can still be found in the Arlington National Cemetery. More information on the founder is on https://en.wikipedia.org/wiki/Henry_Northey_Hooper
The role of disciplinary analysis in web science education
No full textThis paper considers the ways in which Web Science educationcan benefit from an analysis method used to gauge disciplinary representation. Three key contributions are identified:1) driving development of the Web Science curriculum; 2) teaching WebScience, i.e. considering its evolution over time and using the method to foster comparisons of Web Science with other like fields; 3) teaching the analysis method itself as an example of amixed methods, Web Science method.This paper addresses topic #1 of the Web Science Educationactivities (Web Science education programmes design)
FIG. 1. — Amphinolana claudelevii n. gen. n in Two new genera of hadromerid sponges (Porifera, Demospongiae)
No full textFIG. 1. — Amphinolana claudelevii n. gen. n. sp.; A, photomacrograph of surface with cortical plates (alcohol-preserved specimen); B, ground thick section, perpendicular to surface, showing cortex and aquiferous groove (contracted) supported by strands of tylostyles. Scale bars: A, 5 mm; B, 50 µm.Published as part of Rützler, Klaus & Hooper, John N. A., 2000, Two new genera of hadromerid sponges (Porifera, Demospongiae), pp. 337-344 in Zoosystema 22 (2) on page 340, DOI: 10.5281/zenodo.540018
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