The Dynastinae (Coleoptera: Scarabaeidae) of the Cayman Islands (West Indies), with descriptions of Tomarus adoceteus, new species (Pentodontini) and Caymania nitidissima, new genus and species (Phileurini)

The five genera and eight species of dynastine scarabs occurring in the Cayman Islands in the West Indies are reviewed. Two new, endemic species are described from Little Cayman, with supporting illustrations: Tomarus adoceteus Ratcliffe and Cave (Pentodontini), new species, and Caymania nitidissima Ratcliffe and Cave (Phileurini), new genus and species

New species of \u3ci\u3eOrizabus\u3c/i\u3e Fairmaire (Coleoptera: Scarabaeidae: Dynastinae: Pentodontini) from Mexico and Guatemala, with a revised key and checklist of the species in the genus

Five new species of Orizabus Fairmaire from Mexico and Guatemala are described, illustrated, and compared with other Orizabus species: O. amalgamatus Ratcliffe and Cave, O. delgadoi Ratcliffe and Cave, O. epithecus Ratcliffe and Cave, O. mezclus Ratcliffe and Cave, and O. thomasi Ratcliffe and Cave. An identification key and a checklist of the species in the genus Orizabus are provided

The Dynastinae (Coleoptera: Scarabaeidae) of the Bahamas with a description of a new species of \u3ci\u3eCyclocephala\u3c/i\u3e from Great Inagua Island

The seven genera and 13 species of dynastine scarabs recorded from the Bahamas are reviewed. Two of those species are endemic, including Cyclocephala dolichotarsa Ratcliffe and Cave, new species, described from Great Inagua Island. Eleven species are also known to occur in the USA and/or Cuba. Six species are probably not established based on infrequency of collection

The European framework for regulating telecommunications - a 25-year appraisal

The European telecommunications sector has been radically transformed in the past 25 years: from a group of state monopolies to a set of increasingly competitive markets. In this paper we summarize how this process has unfolded -- for both fixed and mobile telecommunications -- by focusing on the evolution of the regulatory framework and by drawing some parallels with the evolution of the sector in the US. Given the major strategic importance of the sector, we highlight some of the challenges that lie ahead

Call Me Caitlyn: Making and making over the 'authentic' transgender body in Anglo-American popular culture

A conception of transgender identity as an ‘authentic’ gendered core ‘trapped’ within a mismatched corporeality, and made tangible through corporeal transformations, has attained unprecedented legibility in contemporary Anglo-American media. Whilst pop-cultural articulations of this discourse have received some scholarly attention, the question of why this 'wrong body' paradigm has solidified as the normative explanation for gender transition within the popular media remains underexplored. This paper argues that this discourse has attained cultural pre-eminence through its convergence with a broader media and commercial zeitgeist, in which corporeal alteration and maintenance are perceived as means of accessing one’s ‘authentic’ self. I analyse the media representations of two transgender celebrities: Caitlyn Jenner and Nadia Almada, alongside the reality TV show TRANSform Me, exploring how these women’s gender transitions have been discursively aligned with a cultural imperative for all women, cisgender or trans, to display their authentic femininity through bodily work. This demonstrates how established tropes of authenticity-via-bodily transformation, have enabled transgender to become culturally legible through the wrong body trope. Problematically, I argue, this process has worked to demarcate ideals of ‘acceptable’ transgender subjectivity: self-sufficient, normatively feminine, and eager to embrace the possibilities for happiness and social integration provided by the commercial domain

The Dynastine Scarab Beetles (Coleoptera: Scarabaeidae: Dynastinae) of Chile

The eight species of dynastine scarab beetles that occur in Chile are reviewed. Keys, descriptions, geographic distributions, monthly adult activity, notes on natural history, illustrations, and distribution maps are provided for all species. The erroneous records of 16 dynastine species reported from Chile are reviewed and clarified. The monotypic genus Chiliphileurus Endrödi, 1977 is reduced to junior synonymy with Eophileurus Arrow, 1908, and its only species, Chiliphileurus tuberculatus Endrödi, 1977, follows as a new junior synonym of the Asian Eophileurus cingalensis Arrow, 1908

An ab Initio Investigation of the Stabilization of Selected β-substituted Ethyl Cations and α-substituted Methyl Cations

In this study, we calculate the stabilization of β-substituted ethyl cations (R = H, Li, BeH, BH_2, CH_3, NH_2, OH, F, Na, MgH, AlH_2, SiH_3, PH_2, SH, Cl) and α-substituted methyl cations (R = H, Li, CH_3, NH_2, OH, F, Na, SiH_3, PH_2, SH, Cl) in order to obtain a relationship between the nature of the substituent and the degree of stabilization of the cation. Results show that the stabilization energy is related to the electronegativity of the β substituents, but not the α substituents. The rotational barrier of the β-substituted ethyl cation is linearly related to the Mulliken population of the 2p(C+) orbital. We found that the stabilization energy is linearly related to the ionization potential of the α- and PLA β-substituted radicals, and the HOMO energies of the PLA β-substituted radical are linearly related to the corresponding ionization potentials. Trends in the stabilization by second- and third-row substituents are discussed

Autoradiographic Study of the Turnover of Chromatin-Associated Phospholipids in Vicia Faba L.

SUMMARYAutoradiographic data from labelling studies on the incorporation of [14C] ethanolamine into nuclear phospholipids of meristem cells from roots of Vicia faba indicated the presence of a continuous labelling pattern for the nuclear membrane throughout the cell cycle. In contrast, a periodic labelling pattern was observed in chromatin of interphase nuclei which closely paralleled the synthesis pattern for DNA. This corroborated biochemical data from previously published studies of hepatocyte nuclear membranes and chromatin

A Theoretical Study of the Electronic Coupling Element for Electron Transfer in Water

The electronic coupling element for electron transfer between a donor and acceptor in water is examined using simulations combining molecular dynamics and semiempirical quantum mechanics. In the first phase of the simulations a model donor and acceptor are solvated in water, using realistic potentials. Following equilbration, molecular dynamics simulations are performed with the donor, acceptor, and water at approximately 300 K, under periodic boundary conditions. In the second phase of the simulation, the electronic coupling element between the donor and acceptor is calculated for a number of time slices, in the presence of the intervening water molecules (those having a nonnegligible effect on the coupling element at the given distance). Finally, a subset of these configurations is used to investigate the donor-acceptor energy dependence of the coupling by varying the model donor and acceptor. It is found, contrarty to a number of previous theoretical results, that water significantly increases the electronic coupling element at a given donor-acceptor separation. The value for, using INDO wave functions is estimated to be 2.0 Åˑ¹ and is found to depend weakly on the identity of the donor and acceptor. Comparison with ab initio results for a subset of the configurations or using idealized solvent gemetries suggests that the ab initio, value would be in the range of 1.5-1.8 Åˑ¹