Manganese Defective Clustering: Influence on the Spectroscopic Features of Ceria-Based Nanomaterials

The influence of manganese modification on the spectroscopic features of manganese-doped CeO2 systems synthesized by the microwave-assisted hydrothermal route and their correlation with the presence of O defective structures were verified, focusing on their interaction with poisonous atmospheres. Raman and electron paramagnetic resonance studies confirmed the presence of defective clusters formed by dipoles and/or quadrupoles. The number of paramagnetic species was found to be inversely proportional to the doping concentration, resulting in an increase in the Mn2+ signal, likely due to the reduction of Mn3+ species after the interaction with CO. X-ray photoelectron spectroscopy data showed the pure system with 33% of its cerium species in the Ce3+ configuration, with an abrupt decrease to 19%, after the first modification with Mn, suggesting that 14% of the Ce3+ species are donating one electron to the Mn2+ ions, thus becoming nonparamagnetic Ce4+ species. On the contrary, 58% of the manganese species remain in the Mn2+ configuration with five unpaired electrons, corroborating the paramagnetic feature of the samples seen in the electron paramagnetic resonance study

Identification of common genetic risk variants for autism spectrum disorder

Autism spectrum disorder (ASD) is a highly heritable and heterogeneous group of neurodevelopmental phenotypes diagnosed in more than 1% of children. Common genetic variants contribute substantially to ASD susceptibility, but to date no individual variants have been robustly associated with ASD. With a marked sample-size increase from a unique Danish population resource, we report a genome-wide association meta-analysis of 18,381 individuals with ASD and 27,969 controls that identified five genome-wide-significant loci. Leveraging GWAS results from three phenotypes with significantly overlapping genetic architectures (schizophrenia, major depression, and educational attainment), we identified seven additional loci shared with other traits at equally strict significance levels. Dissecting the polygenic architecture, we found both quantitative and qualitative polygenic heterogeneity across ASD subtypes. These results highlight biological insights, particularly relating to neuronal function and corticogenesis, and establish that GWAS performed at scale will be much more productive in the near term in ASD.Peer reviewe

THE IMMATURE STAGES OF PARADASYHELEA MINUTA WIRTH AND LEE WITH A NOTE ON ADULT ANTENNAL SENSILLA AND A DISCUSSION ON THE RELATIONSHIPS OF THE GENUS PARADASYHELEA MACFIE

The 4th stage larva and pupa of Paradasyhelea minuta Wirth and Lee are described and their relationships with immatures of other ceratopogonids discussed. Paradasyhelea Macfie is most closely related to Culicoides Latreille. The distribution of antennal sensory pits is given for both sexes. Copyrigh

THE UNDESCRIBED MALE AND IMMATURE STAGES OF CULICOIDES INTERROGATUS LEE AND REYE

The species Culicoides interrogatus Lee and Reye was previously known from 6 females collected in New South Wales. This paper describes the breeding site, the unknown male and immature stages (pupa, 2nd, 3rd and 4th larval instars) based on material collected at Granite Creek, Queensland

THE IMMATURE STAGES OF SOME AUSTRALIAN CULICOIDES LATREILLE (DIPTERA: CERATOPOGONIDAE)

Descriptions are given of the third and fourth instar larvae and pupae of nine species of Australian Culicoides (C. angularis Lee and Reye, C. austropalpalis Lee and Reye, C. brevitarsis Kieffer, C. marksi Lee and Reye, C. marmoratus (Skuse), C. molestus (Skuse), C. narrabeenensis Lee and Reye (larval descriptions incomplete), C. subimmaculatus Lee and Reye and C. victoriae Macfie). Additional information is given on the larval setae of four other species of Culicoidini—C. gladysae Kettle, Elson and Dyce, C. interrogatus Lee and Reye, C. belkini Wirth and Arnaud and Paradasyhelea minuta Wirth and Lee. Keys are provided for fourth instar larvae and pupae of all 13 species. Copyrigh

Nuisance flies on Australian cattle feedlots: immature populations

Species composition, seasonality and distribution of immature fly populations on a southern Queensland feedlot during 2001–2003 were determined. Similar data were collected on feedlots in central New South Wales and central Queensland. The fly species recovered in the highest numbers were Musca domestica L. (Diptera: Muscidae), Stomoxys calcitrans L. (Diptera: Muscidae) and Physiphora clausa Macquart (Diptera: Ulidiidae). Houseflies were the dominant species at all feedlots. Houseflies preferred the warmer months from October to June, but stable flies preferred the cooler months and peaked in spring (September–November) and autumn (March–May). Larval abundance ratings recorded in the feedlot and numbers of larvae extracted in the laboratory from corresponding samples followed similar trends. Larvae of M. domestica were most abundant in the hospital and induction area and least abundant in horse stables and yards. Pupae of M. domestica were abundant in the hospital and induction area and drains, but least abundant in horse stables and yards. Larvae of S. calcitrans were most abundant in drains and least abundant in horse stables and yards. Pupae of S. calcitrans were most numerous in drains and least numerous in old cattle pens. Feedlot design and management had little effect on fly reduction

The distribution and host plants of fruit flies (Diptera: Tephritidae) in Australia

This book provides for the first time a detailed host list for all the fruit fly species (Tephritidae) known from Australia. It includes available distribution, male lure and host plant information for the 278 species currently recorded from Australia (including Torres Strait Islands but excluding Christmas and Cocos (Keeling) islands in the Indian Ocean). This total includes 269 described species plus nine undescribed species of Tephritinae. Thirteen fruit fly specialists from throughout Australia collaborated with QDPI in the production of this book. It provides an invaluable reference source for anyone involved in fruit fly research, ecological studies, pre- and post-harvest control, regulation, quarantine and market access