96,097 research outputs found
World War I record of service survey for Gordon C. Day, signed 16 December 1922.
No full textQuestionnaire about Gordon Cushing Day's service in World War I, 1917-1919, signed by Day on 16 December 1922.Questionnaire originally part of a survey of Norwich University alumni conducted by a “Norwich in the World War” committee consisting of Charles N. Barber (chairman), Carl V. Woodbury, K.R.B. Flint, and Gustaf A. Nelson. Data from these questionnaires may have been used in a chapter of "Vermont in the world war, 1917-1919" by Harold P. Sheldon (1928)
Finite size effects and the supersymmetric sine-Gordon models
No full textWe propose nonlinear integral equations to describe the groundstate energy of the fractional supersymmetric sine-Gordon models. The equations encompass the N = 1 supersymmetric sine-Gordon model as well as the phi(id,id,adj) perturbation of the SU(2)(L) x SU(2)(K)/SU(2)(L+K) models at rational level K. A second set of equations is proposed for the groundstate energy of the N = 2 supersymmetric sine-Gordon model
Hippothoa pacifica Gordon 1984
No full text<i>Hippothoa pacifica</i> Gordon, 1984 <p>(Fig. 10A, D)</p> <p> <i>Hippothoa divaricata pacifica</i> Gordon, 1984: 111, text-fig. 10C, F, pl. 43A, B; Gordon <i>et al</i>. 2009: 291.</p> <p> <b>Material examined.</b> <i>Holotype:</i> NIWA 1279 (H-282), 30.5533° S, 178.5267° W, 125 m. <i>Paratype:</i> NIWA 1280 (P-567), same data as holotype. <i>Other material:</i> NIWA 73295, 34.2685° S, 173.0248° E, 168 m; NIWA 98914, 46.7250° S, 165.7750° E, 286 m; NIWA 144794, 33.9875° S, 171.7508° E, 170–174 m; NIWA 26694, 26696, 98202, 98214, 98215, 42.8292° S, 177.4218° W, 826 m.</p> <p> <b>Remarks.</b> Gordon & Ryland (1977) noted the close similarity between European and New Zealand specimens of <i>Hippothoa divaricata</i>, treating them as conspecific. Differences appeared trivial, including “the autozooidal sinus, which is more U-shaped, and the pore-chambers which are more triangular” in the New Zealand form. Gordon (1984) described the latter as a new subspecies, <i>H. divaricata pacifica</i>, further noting more-elongate zooeciules, fewer pore-chambers and a kenozooidal ancestrula, but was not able to illustrate the ovicell in the type specimens, noting, however (in remarks on <i>Hippothoa calciophilia</i> Gordon, 1984, p. 110), that the apex of the ovicell in <i>H. divaricata pacifica</i> was bimucronate.</p> <p> The new material gives information on the ovicell, of which the ooecium is indeed bimucronate (Fig. 10A), appearing as a pair of converging, rimmed, drop-shaped tubular (elevated) pseudopores in non-eroded specimens. De Blauwe (2009) has illustrated by SEM Belgian material of <i>H. divaricata</i> —the sole ovicell shown has an ooecium with more-widely separated elevations, each with a small excavation in it. The specimen additionally shows that the autozooids are proportionally narrower and more-strongly carinate than in the New Zealand form, which is here raised to full species rank. Moyano’s (1986) illustrations of <i>H. divaricata</i> from Chile resemble <i>H. pacifica</i> but the ancestrula has an orifice and operculum.</p> <p> <i>Hippothoa pacifica</i> ranges throughout New Zealand from the vicinity of Raoul Island to southern South Island (c. 29– 47° S), where it seems to be restricted to calcareous substrata. It occurs from shallow coastal water to 826 m depth.</p>Published as part of <i>Gordon, Dennis P., 2020, New Hippothoidae (Bryozoa) from Australasia, pp. 451-476 in Zootaxa 4750 (4)</i> on pages 468-469, DOI: 10.11646/zootaxa.4750.4.1, <a href="http://zenodo.org/record/3708766">http://zenodo.org/record/3708766</a>
Gordon Milton M. — Assimilation in American Life
No full textP. C. Gordon Milton M. — Assimilation in American Life. In: Population, 21ᵉ année, n°2, 1966. p. 416
Hippothoa peristomata Gordon 1984
No full textHippothoa peristomata Gordon, 1984 (Fig. 10B, C, E, F) Hippothoa peristomata Gordon, 1984: 111, text-fig. 10E, pl. 43E–G; Gordon et al. 2009: 291. Material examined. Holotype: NIWA 7429 (H-330), Kermadec Ridge (no data). Other material: NIWA 22948, 35.7415° S, 178.4983° E, 312 m; NIWA 76400, 37.6152° S, 177.0957° E, 165–170 m; NIWA 93782, 120856, 36.9078° S, 169.8463° W, 1013 m. Remarks. The species was named for the extremely elevated orificial region (Fig. 10B), shown here in profile for the first time (Fig. 10E). The ooecium of the terminal ovicell is relatively large and globular, and a little wider than the maternal zooid (Fig. 10C). The holotype colony had unusual kenozooids and it appears that these were not anomalous as they also occur in a sample from the Louisville Seamount Chain. They are almost the same size and shape as autozooids but instead of a tall elevated orifice there is only a smooth rounded convexity (Fig. 10F); this does not appear to be a reparative feature. Only one ancestrula has been found and it is kenozooidal. Hippothoa peristomata was first discovered in a sample from the Kermadec Ridge but the label with station data was lost. Further, the type material lacked an ancestrula. The species has subsequently been identified three times in later-collected samples—from the outer continental shelf south of White Island, Bay of Plenty, at 165–170 m, on the southern Kermadec Ridge near Rumble III Seamount at 312 m, and on the Louisville Seamount Chain at 1013 m. The substratum is volcanic rock.Published as part of Gordon, Dennis P., 2020, New Hippothoidae (Bryozoa) from Australasia, pp. 451-476 in Zootaxa 4750 (4) on page 469, DOI: 10.11646/zootaxa.4750.4.1, http://zenodo.org/record/370876
On the integrability of the sine-Gordon system
No full textThis thesis investigates the integrability of the sine-Gordon system of nonlinear partial differential equations when the dependent variables are subject to some very particular boundary conditions. In chapter 1 the sine-Gordon system is introduced and, with N ϵ Z, P, Q ϵ R, the sets of initial-boundary value problems A(_N) and B(_P,Q) are defined. In the set A(_N) at the spatial variable x is unbounded and the boundary conditions are fixed by initially choosing the topological charge N. This set of problems is the one usually associated with the sine-Gordon system. In the set B(_P,Q) the spatial coordinate is constrained to the semi-line (-oo,0) and there exists two boundary parameters P,Q ϵ R to be chosen a priori. It is the study of this second set of initial-boundary value problems for arbitrary P, Q which forms all the original work of this dissertation. The study presented here is primarily concerned with the development of three separate inverse scattering methods for solving these sets of initial-boundary value problems. The first of these is developed in chapter 3 and is applicable to a subset of the problems in A(_N). The method is the one usually associated with the sine-Gordon system and studies the asymptotics of the initial data as x → ±oo. It is included in this thesis for completeness and as background for the original material which follows. Next, in chapters 4 and 5, the inverse scattering methods appropriate to initial-boundary value problems in subsets of B(_P,O) and B(_P,Q#O) are constructed. In these cases it is important to realise that it is only possible to study the asymptotics of the initial data as x → -oo. Once these three methods have been formulated they are used to find soliton solutions and infinite sets of integrals of motion for these boundary value problems. When a boundary is present at x = 0 the interaction of the solitons with this boundary is studied. These topics are addressed in chapter 6. Finally in chapter 7 the question of the integrability of both sets of problems is addressed. By interpreting the various inverse scattering methods in terms of canonical coordinate transformations of phase space it is seen that the existence of such methods can be viewed as a constructive proof of the integrability of these boundary value problems
The complex sine-Gordon model on a half line
No full textIn this thesis, we study the complex sine-Gordon model on a half line. The model in the bulk is an integrable (l+1) dimensional field theory which is U(1) gauge invariant and comprises a generalisation of the sine-Gordon theory. It accepts soliton and breather solutions. By introducing suitably selected boundary conditions we may consider the model on a half line. Through such conditions the model can be shown to remain integrable and various aspects of the boundary theory can be examined. The first chapter serves as a brief introduction to some basic concepts of integrability and soliton solutions. As an example of an integrable system with soliton solutions, the sine-Gordon model is presented both in the bulk and on a half line. These results will serve as a useful guide for the model at hand. The introduction finishes with a brief overview of the two methods that will be used on the fourth chapter in order to obtain the quantum spectrum of the boundary complex sine-Gordon model. In the second chapter the model is properly introduced along with a brief literature review. Different realisations of the model and their connexions are discussed. The vacuum of the theory is investigated. Soliton solutions are given and a discussion on the existence of breathers follows. Finally the collapse of breather solutions to single solitons is demonstrated and the chapter concludes with a different approach to the breather problem. In the third chapter, we construct the lowest conserved currents and through them we find suitable boundary conditions that allow for their conservation in the presence of a boundary. The boundary term is added to the Lagrangian and the vacuum is reexamined in the half line case. The reflection process of solitons from the boundary is studied and the time-delay is calculated. Finally we address the existence of boundary-bound states. In the fourth chapter we study the quantum complex sine-Gordon model. We begin with a brief overview of the theory in the bulk where the semi-classical spectrum and an exact S'-matrix are presented. Following that we use the stationary phase method to derive the semi-classical spectrum of boundary bound states. The bootstrap method is used as an alternative approach to obtain the same spectrum. The results are discussed and compared. The final chapter consists of a general discussion on open questions and problems of the model, and some proposals for further research
Novel aspects in the synthesis of carbenoids containing P/C-p pi-bonds
No full textNiecke E, Becker P, Fuchs A, Nieger M, Schiffer T, Schoeller W. Novel aspects in the synthesis of carbenoids containing P/C-p pi-bonds. In: Phosphorus, Sulfur, and Silicon and the Related Elements. PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS. Vol 110. GORDON BREACH SCI PUBL LTD; 1996: 613-616.The synthesis and x-ray structure analysis of a novel type of carbenoids, aryl-P(=E)=C(Cl)Li(thf)(3)(E=N-aryl, C(SiMe(3))(2)), as well as the first example of a 1,3-diphosphetane-2,4-diyl, (aryl-PCCl)(2), is reported and on the basis of quantum chemical calculations its bonding situation is discussed. Furthermore, selected examples for the varying reaction behavior of both types of compounds are presented
Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
No full textThe prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
Malakosaria cecilioi Figuerola & Gordon & Cristobo 2018, n. sp.
No full textMalakosaria cecilioi n. sp. (FIg. 16; TAbLE 18) Etymology. NAMED AFTER CECILIO FERNáNDEZ, IN APPRECIATION OF HIS FRIENDSHIP, SUPPORT AND CONTINUOUS ENCOURAgEMENT TO THE FIRST AUTHOR THROUgHOUT HER RESEARCH CAREER. Material examined. HΟlΟtype: CRBA-58239, STN PAT0210DR11, COLONY C. 30 MM LONg, 0.5 MM WIDE, WITH PROXIMAL AND DISTAL PORTIONS, SOME bRANCHES bROKEN. Paratypes: CRBA-58240, STN PAT0209DR14, COLONY C. 30 MM LONg, 0.5 MM WIDE, WITH PROXIMAL AND DISTAL PORTIONS; CRBA-58241, STN PAT1108DR10, COLONY C. 20 MM LONg, 0.5 MM WIDE, WITH PROXIMAL AND DISTAL PORTIONS; ATTACHED TO CORAL. Description. COLONY ERECT, DICHOTOMOUSLY bRANCHINg; COLONY C. 30 MM LONg bY 0.5 MM WIDE. ZOOIDS ELONgATE, ARRANgED bACK TO bACK IN OVERLAPPINg ALTERNATINg PAIRS. FRONTAL-SHIELD CALCIFICATION SMOOTH, IMPERFORATE, EXCEPT FOR A CRESCENTIC ASCOPORE AND SIX SHALLOW, SUbRECTANgULAR TO OVAL EXCAVATIONS AROUND THE SEMICIRCULAR ORIFICE, OF WHICH TWO OCCUR bETWEEN THE ASCOPORE AND THE ORIFICE; bETWEEN EACH PAIR OF PORE-CHAMbERS A MUCH SMALLER CIRCULAR PORE. NO ORAL SPINES, bUT A bLUNT TUbERCLE OCCURS ON EACH DISTOLATERAL CORNER OF THE ORIFICE. OVICELLS NOT PRESENT IN THE AVAILAbLE MATERIAL. Remarks. M. phΟlaramphΟs GOLDSTEIN, 1882 WAS ESTAbLISHED FOR A SPECIMEN COLLECTED FROM MARION ISLAND, SOUTH INDIAN OCEAN, bY THE CHALLENgER EXPEDITION. BUSK (1884) SYNONYMIZED M. phΟlaramphΟs, AND FURTHER MATERIAL COLLECTED FROM HEARD ISLAND, WITH OnchΟpΟra sinclairii BUSK, 1857, DESCRIbED FROM NEW ZEALAND. WHEN REDESCRIbINg THIS LATTER SPECIES, AS Calwellia sinclairii, GORDON (1984) ACCEPTED BUSK’S SYNONYMY CONCERNINg M. phΟlaramphΟs, bUT LATER SHOWED THAT MalakΟsaria IS SEPARAbLE FROM Calwellia (GORDON 1989). IT IS NOW CLEAR THAT M. phΟlaramphΟs IS NOT SYNONYMOUS WITH M. sinclairii FROM NEW ZEALAND bUT IS SYNONYMOUS WITH BUSK’S MATERIAL FROM HEARD ISLAND MISATTRIbUTED TO M. sinclairii. M. phΟlaramphΟs DIFFERS, INTER ALIA, IN HAVINg A PAIR OF SHORT, bLUNT TUbERCLES AT THE DISTOLATERAL CORNERS OF THE ORIFICE AND THESE ARE LACKINg IN M. sinclairii. GOLDSTEIN MISTOOK LATERO-ORAL PORE-CHAMbERS FOR AVICULARIA, bUT HIS ILLUSTRATIONS RESEMbLE THOSE OF BUSK (1884). M. phΟlaramphΟs FROM HEARD ISLAND IS ILLUSTRATED ON THE BRYOZOA HOME PAgE AS M. sinclairii (BOCK 2000). MalakΟsaria ceciliΟi n. sp. REPRESENTS THE FIFTH SPECIES OF THE gENUS, PENDINg FURTHER INFORMATION. THIS SPECIES IS DISTINgUISHED FROM M. phΟlaramphΟs bY THE SHAPE OF THE ZOOID, ASCOPORE, AND SqUARED, PARALLEL-SIDED ORIFICE. IT ALSO DIFFERS FROM THE BRAZILIAN SPECIES M. atlantica VIEIRA, GORDON, SOUZA & HADDAD, 2010, IN THE SHAPE OF THE ASCOPORE AND IN HAVINg TUbERCLES. n, number of measurements made; SD, standard deviationPublished as part of Figuerola, Blanca, Gordon, Dennis P. & Cristobo, Javier, 2018, New deep Cheilostomata (Bryozoa) species from the Southwestern Atlantic: shedding light in the dark, pp. 211-249 in Zootaxa 4375 (2) on pages 236-237, DOI: 10.11646/zootaxa.4375.2.3, http://zenodo.org/record/129829
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