189,425 research outputs found
Condyloderes multispinosus Neuhaus & Zotto & Yamasaki & Higgins 2019
No full textRe-description of Condyloderes multispinosus based on type material (Figs 8–10; Tables 1–3, 7) Diagnosis. Neck placids with condyles in one row in narrower placids and three rows in broader placids; each narrower placid with one basal condyle; each broader placid with two condyles both in apical, intermediate, and basal row; midventral placid with three apical and basal condyles and two in intermediate row; acicular spine middorsally on segments 1–10, midterminally on segment 11, lateroventrally on segments 1–9, and laterodorsally on segment 10; cuspidate spine ventrolaterally on segments 2, 5 and 9 and lateral accessorily on segment 8; type-6 sensory spot ventromedially on segments 1 (slightly more paraventrally), 2–4 and 6–9, lateroventrally on segment 10, sublaterally on segments 1–3 and 5–9, midlaterally on segments 1 and 2, laterodorsally on segments 1–9, subdorsally on segment 10, and paradorsally on segments 1 (almost subdorsally), 2 and 49; gland cell outlet ventromedially on segment 10. Material examined. Holotypic male (ZOO 1962.82, previously identified as adult by McIntyre (1962) and Higgins (1969)) mounted for light microscopy (Fig. 1; Table 1).Published as part of Neuhaus, Birger, Zotto, Matteo Dal, Yamasaki, Hiroshi & Higgins, Robert P., 2019, Revision of Condyloderes (Kinorhyncha, Cyclorhagida) including description of Condyloderes shirleyi sp. nov., pp. 1-91 in Zootaxa 4561 (1) on page 21, DOI: 10.11646/zootaxa.4561.1.1, http://zenodo.org/record/262789
CMS muon system overview
No full textA complete description of the CMS muon detector is given. Results of the research and development studies on the chamber prototypes and on the trigger strategy are reported. (C) 1995 Elsevier Science B.V. All rights reserved
Condyloderes shirleyi Neuhaus & Zotto & Yamasaki & Higgins 2019, sp. nov.
No full textDescription of Condyloderes shirleyi sp. nov. Neuhaus & Higgins (Figs 33–44; Tables 1, 5–7) http://zoobank.org/ urn:lsid:zoobank.org:act: 0A136401-7882-45BA-A92C-9D1FA76E08EA Condyloderes sp.—Neuhaus 2013: pp. 232, 239, 267, figs 5.1.14, 5.1.15.—Neuhaus 2017: p. 146. Diagnosis. Neck placids with condyles in two rows in narrower placids and three rows in broader placids; each narrower placid with one apical and two basal condyles except paraventral placid next to midventral placid revealing in majority of specimens one apical and one basal condyle; each broader placid usually with two apical condyles, two condyles in intermediate row, and four basal condyles; midventral placid always with three apical condyles and usually two in intermediate row and four in basal row; acicular spine middorsally on segments 1–9 (and on segment 10 in male only), midterminally on segment 11, lateroventrally on segments 1–9, and laterodorsally on segment 10 (in male only); cuspidate spine ventrolaterally on segments 2, 5, 7 and 9, lateral accessorily on segments 2, 4, 6 and 8, and middorsally on segments 5 and 7; type-5 (?) sensory spot ventromedially on segment 11; type-6 sensory spot ventromedially on segments 1 (slightly more paraventrally) and 29, lateroventrally on segment 10, sublaterally on segments 1–3, 5-7 and 9, midlaterally on segments 1 and 2, laterodorsally on segments 1–9, subdorsally on segment 10, and paradorsally on segments 1 (almost subdorsally), 2 and 4–9; gland cell outlet ventromedially on segment 10 in male only; ventromedial appendage on segments 6–8 and area of micropapillae ventromedially on segment 9 in female only. Material examined. Holotypic male (USNM 1480999), 44 paratypic males (USNM 1480980-1480998, 1481000-1481019; ZMB 11598 -11602), 27 paratypic females (USNM 1481020-1481029, 1481031-1481042; ZMB 11603 -11607), and one paratypic female exuvia (USNM 1481030), mounted for light microscope study; 6 males and 5 females, mounted for examination with the SEM (USNM 1481164, 1481166-1481172). All specimens originate from the same sample in Alaska (Fig. 1; Table 1). Deposition of material. The holotype and 62 paratypes are deposited at the National Museum of Natural History, Smithsonian Institution, Washington D.C., catalogued under the numbers USNM 1480999 (holotype) and USNM 1480980-1480998, 1481000-1481042 (Table 1). Also, all specimens mounted for SEM investigation are kept at the Smithsonian Institution (USNM 1481164, 1481166-1481172). Ten additional paratypes are located in the “worm” collection of the Museum für Naturkunde, Berlin and catalogued in the “Generalkatalog freilebende Würmer” under the numbers ZMB 11598 -11607 (Table 1). Type locality. North Pacific Ocean, Alaska, Glacier Bay, Berg Bay, North Element, 58°32’48’’ N, 136°09’00’’ W. Etymology. The species is named in honour of Prof. Dr Thomas Shirley, who supported sampling in Alaska.Published as part of Neuhaus, Birger, Zotto, Matteo Dal, Yamasaki, Hiroshi & Higgins, Robert P., 2019, Revision of Condyloderes (Kinorhyncha, Cyclorhagida) including description of Condyloderes shirleyi sp. nov., pp. 1-91 in Zootaxa 4561 (1) on page 63, DOI: 10.11646/zootaxa.4561.1.1, http://zenodo.org/record/262789
Higher S-dualities and Shephard-Todd groups
No full textAbstract: Seiberg and Witten have shown that in N=2 SQCD with Nf = 2Nc = 4 the S-duality group PSL2ℤ acts on the flavor charges, which are weights of Spin(8), by triality. There are other N=2 SCFTs in which SU(2) SYM is coupled to strongly-interacting non-Lagrangian matter: their matter charges are weights of E6, E7 and E8 instead of Spin(8). The S-duality group PSL2ℤ acts on these weights: what replaces Spin(8) triality for the E6, E7, E8root lattices? In this paper we answer the question. The action on the matter charges of (a finite central extension of) PSL2ℤ factorizes trough the action of the exceptional Shephard-Todd groups G4 and G8 which should be seen as complex analogs of the usual triality group S3≃WeylA2. Our analysis is based on the identification of S-duality for SU(2) gauge SCFTs with the group of automorphisms of the cluster category of weighted projective lines of tubular type. © 2015, The Author(s)
Highly stereoselective formation of cis-enediones from alfa-diazo carbonyl compounds catalysed by [RuCl(eta5-C5H5)(PPh3)2]
No full textCommissioning and Integration Status of CMS: Beam and Cosmics tests
No full textThe various parts of the detectors composing the CMS experiment are currently being assembled on the surface and must be delivered by the end of Summer 2007. The delivery of a working detector demands careful testing and commissioning of all the components. Beam and cosmics tests are performed on newly assembled parts in order to ensure their correct performance. In addition CMS carried on a good detector integration test with a ong cosmics data taking period. About 5\% of the detector was centrally readout and controlled by means of the final tools developed by the DAQ/DCS/DQM groups, profiting of the CMS closure needed to map the magnetic field. This paper reports on the currently ongoing activities aiming to verify detector setup using beam and cosmic tests, as well as on the preliminary results of the full integration test during magnet commissioning
2-(Diphenylphosphino)pyridine (dppy) as monodentate or bridging ligand in silver(I) complexes. Crystal structures of [Ag(eta1-dppy)4][ClO4] and [Ag2(eta1-dppy)(mu-dppy)2][ClO4]2
No full textThe silver(I) homoleptic complexes [Ag-2(dppy)(n)](ClO4)(2) (n=2 for 1 or 3 for 2) and [Ag(dppy)(n)]ClO4 (n=3 for 3 or 4 for 4) [ dppy = 2-( diphenylphosphino) pyridine ] have been isolated in the solid state and characterised in solution by means of variable-temperature P-31 NMR spectroscopy. Both dinuclear species 1 and 2 possess an 8-membered annular core structure with two ligands bridging head-to-tail the metal ions, while in the mononuclear derivatives all dppy ligands act as P-bound monodentate. Treatment of 1 with increasing amounts of dppy revealed (by P-31 NMR spectroscopy) that complexes 2, 3 and 4 are formed in a stepwise manner. Surprisingly, no stable single complex is formed when the ddpy/Ag(I) ratio is 2. A mixture of complexes 2, 3 and 4, along with unidentified products, is conversely present in solution. The solid state structures of complexes 2 and 4 have been determined by single-crystal X-ray diffraction. In 2 the Ag(I) centres possess different environments, one metal ion being two-coordinated (NP donor set) and the other being three-coordinated (NP2 donor set). The cations of 4 present the metal bound to four dppy ligands in a slightly distorted tetrahedral environment. Of the two crystallographically independent cations, one shows the axial Ag-P bond length shorter (2.566(8) Angstrom) than the value for the off-axis Ag-P bonds (2.624(5) Angstrom)
Half-Sandwich Ruthenium(II) Complexes as Catalysts for Stereoselective Carbene-Carbene Coupling Reactions
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