A review of the genus Dysmerus Casey (Coleoptera: Laemophloeidae)

The New World genus Dysmerus Casey, currently with one valid species, is revised. Lectotypes are designated for two species, Dysmerus caseyi (Grouvelle), new status, and Dysmerus sulcicollis Grouvelle, new status. Both are revived from synonymy with D. basalis Casey. Twelve new species are described: Dysmerus boliviensis Thomas, new species, Dysmerus curvicornis Thomas, new species, Dysmerus genaspinosus Thomas, new species, Dysmerus hamaticornis Thomas, new species, Dysmerus impolitus Thomas, new species, Dysmerus skelleyi Thomas, new species, Dysmerus mexicanus Thomas, new species, Dysmerus monstrosus Thomas, new species, Dysmerus politus Thomas, new species, Dysmerus rondoniensis Thomas, new species, Dysmerus symphilus Thomas, new species, and Dysmerus trinidadensis Thomas, new species. A key to adults of the species and illustrations are provided

⁸⁷Sr/⁸⁶Sr chemostratigraphy of Neoproterozoic Dalradian limestones of Scotland and Ireland: constraints on depositional ages and time scales

New calcite <sup>87</sup>Sr/<sup>86</sup>Sr data for 47 limestones from the metamorphosed and deformed Neoproterozoic-Cambrian Dalradian Supergroup of Scotland and Ireland are used to identify secular trends in seawater <sup>87</sup>Sr/<sup>86</sup>Sr through the Dalradian succession and to constrain its depositional age. Dalradian limestones commonly have Sr greater than 1000 ppm, indicating primary aragonite and marine diagenesis. Low Mn, Mn/Sr less than 0.6, ë<sup>18</sup>O and trace element data indicate that many <sup>87</sup>Sr/<sup>86</sup>Sr ratios are unaltered since diagenesis despite greenschist- to amphibolite-facies metamorphism, consistent with the documented behaviour of Sr and O during metamorphic fluid-rock interaction. Thus, the <sup>87</sup>Sr/<sup>86</sup>Sr data are interpreted largely to reflect <sup>87</sup>Sr/<sup>86</sup>Sr of coeval seawater. Currently available data show that Neoproterozoic seawater <sup>87</sup>Sr/<sup>86</sup>Sr rose from c. 0.7052 at 850-900 Ma to c. 0.7085 or higher in the latest Neoproterozoic. Temporal changes at c. 800 Ma and c . 600 Ma bracket the range in <sup>87</sup>Sr/<sup>86</sup>Sr values of calcite in Grampian. Appin and lowest Argyll Group (c.0.7064-0.7072) and middle and uppermost Argyll Group (c. 0.7082-0.7095) limestones, consistent with a rise in seawater <sup>87</sup>Sr/<sup>86</sup>Sr around 600 Ma. <sup>87</sup>Sr/<sup>86</sup>Sr data are consistent with the sedimentary affinity of the Islay Subgroup with the underlying Appin Group, and with a possible time interval between deposition of Islay and Easdale Subgroup rocks. They indicate that the Dalradian, as a whole, is younger than c. 800 Ma

Descriptions of four new species of Cryptolestes Ganglbauer : with a revised key to the New World species and notes on other species (Coleoptera: Laemophloeidae)

The following new species of Cryptolestes Ganglbauer are described and illustrated: Cryptolestes obesus Thomas, new species, Brazil; Cryptolestes turnbowi Thomas, new species, Honduras and Mexico; Cryptolestes inyoensis Thomas, new species, California; Cryptolestes spectabilis Thomas, new species, Ecuador. A revised key to the New World species is provided. The male genitalia are illustrated and the female of C. calabozus Thomas is characterized, and new distribution records are provided for it, C. cornutus Thomas and Zimmerman, C. trinidadensis Thomas, C. curus Lefkovitch, and C. hlapperichi Lefkovitch

A revision of Pediacus Shuckard (Coleoptera: Cucujidae) for America north of Mexico : with notes on other species

The genus Pediacus Shuckard is revised for America north of Mexico. Seven species are recorded: P. andrewsi Thomas, n. sp.; P. fuscus Erichson; P. gracilis Thomas, n. sp.; P. hesperoglaber Thomas, n. sp.; P. ommatodon Thomas, n. sp.; P. stephani Thomas, n. sp.; and P. subglaber LeConte, new status. The species are described and illustrated, and a key is presented for their identification. The described European and Neotropical species are reviewed and illustrated

Thomas rotation and Thomas precession

Exact and simple calculation of Thomas rotation and Thomas precessions along a circular world line is presented in an absolute (coordinate-free) formulation of special relativity. Besides the simplicity of calculations the absolute treatment of spacetime allows us to gain a deeper insight into the phenomena of Thomas rotation and Thomas precession.Comment: 20 pages, to appear in Int. J. Theo. Phy

The Thomas-Fermi and the Thomas-Fermi-Dirac Models in Two-Dimension- the Effect of Strong Quantizing Magnetic Field

Using Thomas-Fermi (TF) and Thomas-Fermi-Dirac (TFD) models, we have investigated the properties of electron gas inside two-dimensional (2D) Wigner-Seitz (WS) cells in presence of a strong orthogonal quantizing magnetic field. The electron-electron Coulomb exchange interaction in quasi-2D case is obtained. The exact form of exchange term in 2D is derived making the width of the system tending to zero. Further, using the exchange term, the Thomas-Fermi-Dirac equation in 2D is established. It has been observed that only the ionized WS cell can have finite radius in the Thomas-Fermi model, even in presence of a strong quantizing magnetic field. On the other hand, in the Thomas-Fermi-Dirac model a neutral WS cell can have finite radius.Comment: 9 pages LATEX file with two .eps figures (included), some version will appear in EPJ D 71:5 (2017), DOI: 10.1140/epjd/e2016-70295-

Love, rights and solidarity: studying children's participation using Honneth's theory of recognition

Recent attempts to theorize children’s participation have drawn on a wide range of ideas, concepts and models from political and social theory. The aim of this article is to explore the specific usefulness of Honneth’s theory of a ‘struggle for recognition’ in thinking about this area of practice. The article identifies what is distinctive about Honneth’s theory of recognition, and how it differs from other theories of recognition. It then considers the relevance of Honneth’s conceptual framework to the social position of children, including those who may be involved in a variety of ‘participatory’ activities. It looks at how useful Honneth’s ideas are in direct engagement with young people’s praxis, drawing on ethnographic research with members of a children and young people’s forum. The article concludes by reflecting on the implications of this theoretical approach and the further questions which it opens up for theories of participation and of adult–child relations more generally

LACANIAN UNCONSIOUS IN DYLAN THOMAS \"ELEGY\" AND \"IN MY CRAFT OR SULLEN ART\"

LACANIAN UNCONSIOUS IN DYLAN THOMAS \"ELEGY\" AND \"IN MY CRAFT OR SULLEN ART\" - Psychoanalysis, Unconscious, Dylan Thomas, Metaphor-Metonym