Human consumption of insects has previously been examined in cross-cultural studies. However, such studies rarely include African countries and willingness-to-pay for insect-based food has never been assessed in cross-cultural studies. The current study presents a cross-cultural study conducted with 409 urban dwellers from Belgium (191 males; 218 females) and 412 urban dwellers from Gabon (219 males; 193 females).
View Article and Find Full Text PDFPowder samples of the new monoclinic compounds LnMoSiO (Ln = La, Ce, Pr, and Nd) and single crystals of PrMoSiO were obtained by the solid-state reaction. The crystal structure of PrMoSiO was determined by single-crystal X-ray diffraction. PrMoSiO crystallizes in the monoclinic space group 2/ with unit-cell parameters = 5.
View Article and Find Full Text PDFPolycrystalline LiMoO was prepared in a sealed Mo crucible at 1380 °C for 48 h using the conventional high-temperature solid-state method. The polar tetragonal crystal structure (space group 4) is confirmed based on the Rietveld refinement of powder neutron diffraction and Li/Li solid-state NMR. The crystal structure features infinite chains of MoO (i.
View Article and Find Full Text PDFIntroduction: Meloidae are distributed in temperate and arid regions but are also common in subtropical and tropical savannahs. These insects contain cantharidin, a vesicant substance that can cause poisoning by ingestion and dermatitis by direct contact.
Material And Methods: We describe recurrent Meloidae-related dermatitis outbreaks and their health impact by analyzing medical consultation records and meteorological data.
Several biophysical factors are leading to the loss of biodiversity, among them the dominance of exotic invasive species on native communities is important. Their dominance can lead to changes in the structure of insect communities, by competing and displacing native species to other crops or habitats. These changes can impact the herbivore's natural enemies in invaded areas by diverging them from suitable herbivores and altering their biological control process.
View Article and Find Full Text PDFThe new compound RbMoS has been synthesized as single crystals by a solid-state reaction in a sealed molybdenum crucible at 1500 °C. It constitutes the fifth member of the homologous series of the trigonal (space group 3̅) compounds Rb(MoS)(MoS). Consequently, its crystal structure is based on an equal mixture of MoS and MoS cluster units interlinked through Mo-S bonds with the Rb cations localized in the voids between the MoS and MoS units.
View Article and Find Full Text PDFMo-based cluster compounds are a large class of materials with complex crystal structures that give rise to very low lattice thermal conductivity. Here, we report on the crystal structure and transport property measurements (5-800 K) of the novel Tl-filled compound AgTlMoSe. This compound adopts a crystal structure described in the rhombohedral R3 c space group [ a = 9.
View Article and Find Full Text PDFBiodiversity research in tropical ecosystems-popularized as the most biodiverse habitats on Earth-often neglects invertebrates, yet invertebrates represent the bulk of local species richness. Insect communities in particular remain strongly impeded by both Linnaean and Wallacean shortfalls, and identifying species often remains a formidable challenge inhibiting the use of these organisms as indicators for ecological and conservation studies. Here we use DNA barcoding as an alternative to the traditional taxonomic approach for characterizing and comparing the diversity of moth communities in two different ecosystems in Gabon.
View Article and Find Full Text PDFBackground: Furuncular myiasis is likely to be seen by Western dermatologists because of the increasing number of international travelers but remains unfamiliar to most of them, who tend to refer these patients to hospitals. Different treatments have been proposed, but many of them are not achievable in outpatient consultation.
Methods: We reported three typical cases of furuncular myiasis, according to each species involved, and proposed diagnostic and therapeutic guidelines for dermatologists in outpatient consultation.
Mo-based cluster compounds are promising candidates for thermoelectric applications at high temperatures due to their very low lattice thermal conductivity values. Here, we report on a detailed investigation of the crystal structure and transport properties measured in a wide range of temperatures (2-800 K) of polycrystalline AgRbMoSe. Single-crystal X-ray diffraction shows that this compound crystallizes in the hexagonal space group P6/m.
View Article and Find Full Text PDFMycobacterium ulcerans (MU), the causative agent of Buruli ulcer, is present in a wide spectrum of environments, including terrestrial and aquatic ecosystems in tropical regions. The most promising studies on the epidemiological risk of this disease suggest that some ecological settings may favor infection of animals with MU including human. A species' needs and impacts on resources and the environment, i.
View Article and Find Full Text PDFThe new compound HgKMoS was synthesized by diffusing mercury into the metastable KMoS compound at 350 °C. Its crystallographic structure, solved from single-crystal X-ray diffraction, shows that the Mo-S framework is maintained during the synthesis. It is based on MoSS units interlinked via Mo-S bonds as in the parent compound.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
July 2016
The crystal structure of the title compound, dilithium germanium trimolybdenum octa-oxide, consists of distorted hexa-gonal-close-packed oxygen layers with stacking sequence ABAC along [001] that are held together by alternating lithium-germanium and molybdenum layers. The two Li(+) and Ge(4+) ions all have site symmetry 3m. and occupy, respectively, tetra-hedral and octa-hedral sites in the ratio 2:1.
View Article and Find Full Text PDFMo-based cluster compounds are promising materials for high-temperature thermoelectric applications due to their intrinsic, extremely low thermal conductivity values. In this study, polycrystalline cluster compounds Cs2CuxMo12Se14 were prepared for a wide range of Cu contents (0 ≤ x ≤ 2). All samples crystallize isostructurally in the trigonal space group R3̅.
View Article and Find Full Text PDFAquatic and semi-aquatic bugs (Heteroptera) represent a remarkable diversity and a resurging interest has been given to documenting at the species level these insects inhabiting Cameroon in Central Africa due to their potential implication in the transmission of the bacterium Mycobacterium ulcerans, the causal agent of Buruli ulcer, an emerging human disease. A survey was carried out over two years in Cameroon. Morphological analyses were done in two steps.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
July 2015
The structure of scandium indium penta-deca-molybdenum nona-deca-selenide, Sc1.91In1.39Mo15Se19, is isotypic with In2.
View Article and Find Full Text PDFTo determine when risk for Buruli ulcer is highest, we examined seasonal patterns in a highly disease-endemic area of Cameroon during 2002-2012. Cases peaked in March, suggesting that risk is highest during the high rainy season. During and after this season, populations should increase protective behaviors, and case detection efforts should be intensified.
View Article and Find Full Text PDFBackground: An understanding of the factors driving the distribution of pathogens is useful in preventing disease. Often we achieve this understanding at a local microhabitat scale; however the larger scale processes are often neglected. This can result in misleading inferences about the distribution of the pathogen, inhibiting our ability to manage the disease.
View Article and Find Full Text PDFWe report on a detailed investigation of the crystal and electronic band structures and of the transport and thermodynamic properties of the Mo-based cluster compound Ag2Tl2Mo9Se11. This novel structure type crystallizes in the trigonal space group R3̅c and is built of a three-dimensional network of interconnected Mo9Se11 units. Single-crystal X-ray diffraction indicates that the Ag and Tl atoms are distributed in the voids of the cluster framework, both of which show unusually large anisotropic thermal ellipsoids indicative of strong local disorder.
View Article and Find Full Text PDFThe Afrotropical Belostomatidae fauna has long proved to be a difficult taxonomic problem, not so much for the overwhelmingly large number of species involved but rather because of a lack of trained specialists. The rarity of some taxa also contributes to confusion, because some species remain poorly described or are known only from one or two specimens. During a visit to the Muséum National d'Histoire Naturelle, Paris, France and the Musée Royal de l'Afrique Centrale, Tervuren, Belgium, it was possible to comprehensively review the Limnogeton species based mainly on the specimens housed in the aforementioned collections.
View Article and Find Full Text PDFActa Crystallogr Sect E Struct Rep Online
October 2013
The structure of tetrasodium penta-deca-molybdenum nona-deca-selenide, Na3.88Mo15Se19, is isotypic with the In3+x Mo15Se19 compounds [Grüttner et al. (1979 ▶).
View Article and Find Full Text PDFActa Crystallogr Sect E Struct Rep Online
June 2013
The crystal structure of tris-odium potassium dodeca-molybdenum tetra-deca-sulfide, Na2.9 (2)KMo12S14, consists of Mo12S14S6 cluster units inter-connected through inter-unit Mo-S bonds and delimiting channels in which the Na(+) cations are disordered. The cluster units are centered at Wyckoff positions 2d and have point-group symmetry 3.
View Article and Find Full Text PDFActa Crystallogr Sect E Struct Rep Online
December 2012
Dipraseodymium molybdenum scandium hepta-oxide, Pr2Mo1.73Sc0.27O7, crystallizes in the cubic pyrochlore-type structure.
View Article and Find Full Text PDFThe structure of lithium nona-cerium hexa-deca-molybdenum penta-trideca-oxide, LiCe(9)Mo(16)O(35), is isotypic with LiNd(9)Mo(16)O(35) [Gougeon Gall, Cuny, Gautier, Le Polles, Delevoye & Trebosc (2011 ▶). Chem. Eur.
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