Éditeur(s) : HAL CCSD American Chemical Society
Résumé : Ants have evolved venoms rich in peptides and proteins used for predation, defense, and communication. However, they remain extremely understudied due to the minimal amount of venom secreted by each ant. The present study investigated the differences in the proteome and peptidome of the venom from the bullet ant, Paraponera clavata. Venom samples were collected from a single colony either by manual venom gland dissection or by electrical stimulation and were compared using proteomic methods. Venom proteins were separated by 2D-PAGE and identified by nanoLC-ESI-QTOF MS/MS. Venom peptides were initially separated using C18 reversed-phase high-performance liquid chromatography, then analyzed by MALDI-TOF MS. The proteomic analysis revealed numerous proteins that could be assigned a biological function (total 94), mainly as toxins, or roles in cell regulation and transport. This investigation found that ca. 73% of the proteins were common to venoms collected by the two methods. The peptidomic analysis revealed a large number of peptides (total 309) but with <20% shared by the two collection methods. There was also a marked difference between venoms obtained by venom gland dissection from different ant colonies. These findings demonstrate the rich composition and variability of P. clavata venom.
ISSN: 1535-3893

hal-01603415
https://hal.archives-ouvertes.fr/hal-01603415
DOI : 10.1021/acs.jproteome.6b00948
PRODINRA : 406775
PUBMED : 28118015

Éditeur(s) : HAL CCSD Springer Verlag
Résumé : 17 pages, 11 figures.
International audience
The problem addressed in this paper is the automatic extraction of names from a document image. Our approach relies on the combination of two complementary analyses. First, the image-based analysis exploits visual clues to select the regions of interest in the document. Second, the textual-based analysis searches for name patterns and low-level word textual features. Both analyses are then combined at the word level through a neural network fusion scheme. Reported results on degraded documents such as facsimile and photocopied technical journals demonstrate the interest of the combined approach.
ISSN: 1433-7541

hal-00329459
https://hal.archives-ouvertes.fr/hal-00329459
DOI : 10.1007/s10044-006-0038-6

Éditeur(s) : HAL CCSD Elsevier
Résumé : International audience
Talc is a hydrous magnesium rich layered silicate that is widely disseminated in the Earth from the seafloor to over 100 km depth, in ultra-high pressure metamorphism of oceanic crust. In this paper we determine the single crystal elastic constants at pressures from 0 to 12 GPa of talc triclinic (C 1¯) and monoclinic (C2/c) polytypes using ab initio methods. We find that talc has an extraordinarily high elastic anisotropy at zero pressure that reduces with increasing pressure. The exceptional anisotropy is complemented by a negative Poisson's ratio for many directions in crystal space. Calculations show that talc is not only one of very few common minerals to exhibit auxetic behaviour, but the magnitude of this effect may be the largest reported so far for a mineral. The compression (Vp) and shear (Vs) wave velocity anisotropy is 80% and 85% for the triclinic polytype. At pressures where talc is known be stable in the Earth (up to 5 GPa) the Vp and Vs anisotropy is reduced to about 40% for both velocities, which is still a very high value. Vp is slow parallel to the c-axis and fast perpendicular to it. This remains unchanged with increasing pressure and is observed in both polytypes. The shear wave splitting (difference between fast and slow S-wave velocities) at low pressure has high values in the plane normal to the c-axis, with a maximum near the alow asterisk-axis in the triclinic and the b-axis in the monoclinic polytype. The c-axis is the direction of minimum splitting. The pattern of shear wave splitting does not change significantly with pressure. The volume fraction of talc varies between 11 and 41% for hydrated mantle rocks, but the lack of data on the crystallographic preferred orientation (CPO) precludes a detailed analysis of the impact of talc on seismic anisotropy in subduction zones. However, it is highly likely that CPO can easily develop in zones of deformation due to the platy habit of talc crystals. For random aggregates of talc, the isotropic Vp, Vs and Vp/Vs ratio have significantly lower values than those of antigorite and may explain low-velocity regions in the mantle wedge. Vp/Vs ratios are more complex in anisotropic media because there are fast and slow S-waves, resulting in Vp/Vs1 and Vp/Vs2 ratios for every propagation direction, making interpretation difficult in deformed polycrystalline talc with a CPO. Talc on the subduction plate boundary can strongly influence guided wave velocity as CPO would develop in this region of intense shearing. The very low coefficient of friction (< 0.1) of talc above 100 °C could also explain silent earthquakes at shallow depths (ca 30 km) along the subduction plate boundaries, frequently responsible for tsunami.
ISSN: 0012-821X

hal-00411481
https://hal.archives-ouvertes.fr/hal-00411481
DOI : 10.1016/j.epsl.2008.07.047

Éditeur(s) : J. Thomson [etc., etc.] J. Thomson [etc., etc.] ( Demerara )
Résumé : (Numbering Peculiarities) The volumes are grouped in series as follows: v. 1-5, 1882-86; new ser. v. 1-12, 1887-1898/99; 1900-02 (unnumbered); 3d ser. v. 1- 1911-
(Numbering Peculiarities) Volume for 1912 is lettered on cover "The colony volume"; 1917, War volume"; 1918, "Historical illustrated volume"; 1919, "Colonisation volume"; 1921, "Progressive volume".
Semiannual (June, Dec.) 1882-97; new ser. v.12 in 2 parts covering the years 1898-99; annual, 1900-02; irregular, 1911-
1900-02 have title: Journal of the Royal agricultural and commercial society of British Guiana.
The publication was suspended after 1902, but was revived Jan. 1911 under the original title.
Reports and proceedings of the society are included in each volume.
"Agricultural societies in British Guiana. An historical sketch, by Thomas Watt": v. 5, 1886, p. [255]-273.
"Clubs and societies in British Guiana to 1844. By James Rodway": new ser. v. 6, 1892, p. [69]-90.
Title was chosen for the New York and Northeast agriculture and natural history preservation project, 1998-2001. The project was carried out by the Cornell University, A.R. Mann Library, New York State Library, and New York Public Library and funded in part by the New York State Dept. of Education.
Editors: 1882-86, E. F. im Thurn.--1887-92, 1898-99, J.J. Quelch.--1893-97, James Rodway.--1911- J.J. Nunan (1911, 1917-19, with J. Rodway; 1912- with J. Aiken and G. Franks).--1921- J. Rodway.
Digitized volumes available from Internet Archive. Digitized volumes include Pearson, J.G. “The Life History of an East Indian in British Guiana.” Timehri: the journal of the Royal agricultural and commercial society of British Guiana (1882), http://archive.org/stream/timehrijournalr06guiagoog#page/n145/mode/2up/search/%22Life+History+%22
Record-only item with link to the full digital resource added to support use of this text in the Panama Silver and Asian Gold course to be taught at three institutions starting in Fall 2013.

320094747
ocn320094747
http://ufdc.ufl.edu/AA00015950/00001

Éditeur(s) : Saunders & Otley Saunders & Otley ( London )
Résumé : " ... it is taken from a very voluminous manuscript, which partakes of the mixed nature of memoirs, a journal, an autobiography, and a collection of letters and essays. These bore, in their title-page the following inscription : "The life, adventures, and opinions, of Warner Arundell, Esquire"--Editor's Introd.
(Statement of Responsibility) [edited and compiled] by E.L. Joseph.
West Indies
West Indies
Venezuela
London (England)

Droits : Applicable rights reserved.
47961383
ocm47961383

Éditeur(s) : Saunders & Otley Saunders & Otley ( London )
Résumé : " ... it is taken from a very voluminous manuscript, which partakes of the mixed nature of memoirs, a journal, an autobiography, and a collection of letters and essays. These bore, in their title-page the following inscription : "The life, adventures, and opinions, of Warner Arundell, Esquire"--Editor's Introd.
(Statement of Responsibility) [edited and compiled] by E.L. Joseph.
West Indies
West Indies
Venezuela
London (England)

Droits : Not in copyright per Internet Archive: http://archive.org/details/warnerarundella00josegoog
47961383
ocm47961383
http://ufdc.ufl.edu/AA00012102/00001

Éditeur(s) : [Imprimerie Telhomme] [Imprimerie Telhomme] ( Port-au-Prince Haïti )
Résumé : At head of title: F. Morisseau-Leroy.
French and Spanish on opposite pages numbered in duplicate.
"Traduction espagnole de Miguel Sangenis."
"La première partie ... [de ce] travail ... a été publiée dans 'Haïti-journal' des 30 et 31 décembre 1940 et 6 et 7 janvier 1941, sous le titre: 'Les problèmes de Caraïbes.'" --p.[12]
Caribbean Area

001056902
24685401
AFE0457