757 research outputs found

    The Insects of Treeholes of Northern Indiana With Special Reference to \u3ci\u3eMegaselia Scalaris\u3c/i\u3e (Diptera: Phoridae) and \u3ci\u3eSpilomyia Longicornis\u3c/i\u3e (Diptera: Syrphidae)

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    The aquatic insect community of treeholes in northern Indiana was surveyed from 1983-1986. Twenty-three species, representing three orders and nine families, were found. Megaselia scalaris (Diptera: Phoridae) was collected on several occasions from rotholes, the first member of this family from treeholes. Examination of puparia of Spilomyia longicornis (Diptera: Syrphidae) indicated that the larva of this species has been previously described, but incorrectly associated with the genus Xylata

    The effect of exercise referral schemes upon health and wellbeing: Initial observational insights using individual patient data meta-analysis from The National Referral Database

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    Objectives: To examine if exercise referral schemes (ERS)s are associated with meaningful changes in health and wellbeing in a large cohort of individuals throughout England, Scotland, and Wales from The National Referral Database. Methods: Data were obtained from 23,731 participants from 13 different ERSs lasting 6 weeks to 3 months. Changes from pre- to post-ERS in health and wellbeing outcomes were examined including body mass index (BMI), blood pressure (SBP & DBP), resting heart rate (RHR), short Warwick Edinburgh Mental Wellbeing Scale (SWEMWBS), World Health Organization Well-Being Index (WHO-5), Exercise Related Quality of Life scale (ERQoL), and Exercise Self-Efficacy Scale (ESES). Two-stage individual patient data meta-analysis was used to generate effect estimates. Results: Estimates [95%CIs] revealed statistically significant changes occurred compared to point nulls for BMI (-0.55 kg.m2 [-0.69 to -0.41]), SBP (-2.95 mmHg [-3.97 to -1.92]), SWEMWBS (2.99 pts [1.61 to 4.36]), WHO-5 (8.78 pts [6.84 to 10.63]), ERQoL (15.26 pts [4.71 to 25.82]), ESES (2.58 pts [1.76 to 3.40]), but not RHR (0.22 fc [-1.57 to 1.12]), DBP (-0.93 mmHg [-1.51 to -0.35]). However, comparisons of estimates [95%CIs] against null intervals suggested the majority of outcomes may not improve meaningfully. Conclusions: We considered whether meaningful health and wellbeing changes occur in people who are undergoing ERSs? Regarding this broad question, these results demonstrate that, although many health and wellbeing outcomes improved, the changes be not achieve meaningful levels. This suggests the need to consider the implementation of ERSs more critically to discern how to maximize their effectiveness

    New species and new combinations in Afrotropical \u3ci\u3eEucosmocydia\u3c/i\u3e Diakonoff, 1988 (Lepidoptera: Tortricidae: Olethreutinae)

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    Eight new species of Eucosmocydia Diakonoff are described and illustrated from the Afrotropical region: E. pappeana Brown and Razowski, new species (TL: Kenya); E. deinbolliana Brown and Razowski, new species (TL: Kenya); E. ugandensis Aarvik, new species (TL: Uganda); E. lecaniodiscana Brown and Razowski, new species (TL: Kenya); E. nigeriana Brown and Razowski, new species (TL: Nigeria); E. pan­coviana Brown and Razowski, new species (TL: Kenya); E. kirimiriana Brown and Razowski, new species (TL: Kenya); and E. macabensis Brown and Razowski, new species (TL: Mauritius). Three additional species are transferred to the genus: E. hymenosa (Razowski, 2013), new combination (TL: Nigeria); E. chlorobathra (Meyrick, 1911), new combination (TL: Seychelles); and E. trigonoptila (Meyrick, 1921), new combination (TL: Mozambique). We also transfer to the genus E. catamochla (Meyrick, 1932), new combination (TL: Indonesia), the first species recorded outside the Afrotropical region. We recognize two species groups in Eucosmocydia, and this contribution focuses on the oedipus Diakonoff, 1988 group (n = 13 species), the males of which are characterized by a unique flattened lobe from the base of the hindwing. Six species from Kenya were reared exclusively from native fruit of Sapindaceae; E. mixographa (Meyrick) was formerly reported from Fabaceae and Euphorbiaceae

    Searching for Signatures of Cosmic Superstrings in the CMB

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    Because cosmic superstrings generically form junctions and gauge theoretic strings typically do not, junctions may provide a signature to distinguish between cosmic superstrings and gauge theoretic cosmic strings. In cosmic microwave background anisotropy maps, cosmic strings lead to distinctive line discontinuities. String junctions lead to junctions in these line discontinuities. In turn, edge detection algorithms such as the Canny algorithm can be used to search for signatures of strings in anisotropy maps. We apply the Canny algorithm to simulated maps which contain the effects of cosmic strings with and without string junctions. The Canny algorithm produces edge maps. To distinguish between edge maps from string simulations with and without junctions, we examine the density distribution of edges and pixels crossed by edges. We find that in string simulations without Gaussian noise (such as produced by the dominant inflationary fluctuations) our analysis of the output data from the Canny algorithm can clearly distinguish between simulations with and without string junctions. In the presence of Gaussian noise at the level expected from the current bounds on the contribution of cosmic strings to the total power spectrum of density fluctuations, the distinction between models with and without junctions is more difficult. However, by carefully analyzing the data the models can still be differentiated.Comment: 15 page

    Nodule Organogenesis and Symbiotic Mutants of the Model Legume \u3ci\u3eLotus japonicus\u3c/i\u3e

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    A detailed microscopical analysis of the morphological features that distinguish different developmental stages of nodule organogenesis in wild-type Lotus japonicus ecotype Gifu B-129-S9 plants was performed, to provide the necessary framework for the evaluation of altered phenotypes of L. japonicus symbiotic mutants. Subsequently, chemical ethyl methanesulfonate (EMS) mutagenesis of L. japonicus was carried out. The analysis of approximately 3,000 M1 plants and their progeny yielded 20 stable L. japonicus symbiotic variants, consisting of at least 14 different symbiosis- associated loci or complementation groups. Moreover, a mutation affecting L. japonicus root development was identified that also conferred a hypernodulation response when a line carrying the corresponding allele (LjEMS102) was inoculated with rhizobia. The phenotype of the LjEMS102 line was characterized by the presence of nodule structures covering almost the entire root length (Nod++), and by a concomitant inhibition of both root and stem growth. A mutation in a single nuclear gene was shown to be responsible for both root and symbiotic phenotypes observed in the L. japonicus LjEMS102 line, suggesting that (a) common mechanism(s) regulating root development and nodule formation exists in legumes

    Diagnostic Classifications and Resource Utilization of Decedents Served by the Department of Veterans Affairs

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    Background: Given the volume and cost of inpatient care during the last year of life, there is a critical need to identify patterns of dying as a means of planning end-of-life care services, especially for the growing number of older persons who receive services from the Veterans Health Administration (VHA). Methods: A retrospective computerized record review was conducted of 20,933 VHA patients who died as inpatients between October 1, 2001 and September 30, 2002. Diagnoses were aggregated into one of five classification patterns of death and analyzed in terms of health care resource utilization (mean number of inpatient days and cumulative outpatient visits in the year preceding the patient's death). Results: Cancer deaths were the most common (30.4%) followed by end-stage renal disease (ESRD) (23.2%), cardiopulmonary failure (21.4%), frailty (11.6%), “other” diagnoses (7.3%), and sudden deaths (6.1%). Those with ESRD were more likely to be male and nonwhite (p < 0.05) and those with frailty were more likely to be older and married (p < 0.05). Controlling for demographic variables, those with frailty had the highest number of inpatient days while those with ESRD had the highest number of outpatient visits. Nonmarried status was associated with more inpatient days, especially among younger decedents. Conclusion: As a recognized leader in end-of-life care, the VHA can play a unique role in the development of specific interventions that address the diverse needs of persons with different dying trajectories identified through this research.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/63159/1/jpm.2006.0256.pd

    Transmission of 'Candidatus Anaplasma camelii' to mice and rabbits by camel-specific keds, Hippobosca camelina.

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    Anaplasmosis, caused by infection with bacteria of the genus Anaplasma, is an important veterinary and zoonotic disease. Transmission by ticks has been characterized but little is known about non-tick vectors of livestock anaplasmosis. This study investigated the presence of Anaplasma spp. in camels in northern Kenya and whether the hematophagous camel ked, Hippobosca camelina, acts as a vector. Camels (n = 976) and > 10,000 keds were sampled over a three-year study period and the presence of Anaplasma species was determined by PCR-based assays targeting the Anaplasmataceae 16S rRNA gene. Camels were infected by a single species of Anaplasma, 'Candidatus Anaplasma camelii', with infection rates ranging from 63-78% during the dry (September 2017), wet (June-July 2018), and late wet seasons (July-August 2019). 10-29% of camel keds harbored 'Ca. Anaplasma camelii' acquired from infected camels during blood feeding. We determined that Anaplasma-positive camel keds could transmit 'Ca. Anaplasma camelii' to mice and rabbits via blood-feeding. We show competence in pathogen transmission and subsequent infection in mice and rabbits by microscopic observation in blood smears and by PCR. Transmission of 'Ca. Anaplasma camelii' to mice (8-47%) and rabbits (25%) occurred readily after ked bites. Hence, we demonstrate, for the first time, the potential of H. camelina as a vector of anaplasmosis. This key finding provides the rationale for establishing ked control programmes for improvement of livestock and human health

    On the Generation of a Scale-Invariant Spectrum of Adiabatic Fluctuations in Cosmological Models with a Contracting Phase

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    In Pre-Big-Bang and in Ekpyrotic Cosmology, perturbations on cosmological scales today are generated from quantum vacuum fluctuations during a phase when the Universe is contracting (viewed in the Einstein frame). The backgrounds studied to date do not yield a scale invariant spectrum of adiabatic fluctuations. Here, we present a new contracting background model (neither of Pre-Big-Bang nor of the Ekpyrotic form) involving a single scalar field coupled to gravity in which a scale-invariant spectrum of curvature fluctuations and gravitational waves results. The equation of state of this scalar field corresponds to cold matter. We demonstrate that if this contracting phase can be matched via a nonsingular bounce to an expanding Friedmann cosmology, the scale-invariance of the curvature fluctuations is maintained. We also find new background solutions for Pre-Big-Bang and for Ekpyrotic cosmology, which involve two scalar fields with exponential potentials with background values which are evolving in time. We comment on the difficulty of obtaining a scale-invariant spectrum of adiabatic fluctuations with background solutions which have been studied in the past.Comment: 8 pages, revised version without the section on perturbations, matching the version published on Phys. Rev. D. For cosmological perturbations in the two field model see astro-ph/021127

    Accuracy of High-Speed Video Analysis to Diagnose Primary Ciliary Dyskinesia

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    Background: primary ciliary dyskinesia (PCD) is a rare genetic disease that impairs motility of cilia. Diagnosis relies on a combination of tests and final decision by multidisciplinary team (MDT). High-speed video microscopy (HSVM) is an important contribution to diagnostic testing, and is the only test that examines cilia motility on the day of patients’ appointment. No study has assessed the accuracy of HSVM. We hypothesised that scientists experienced in cilia assessment by HSVM would accurately diagnose PCD using HSVM alone compared to MDT diagnosis.Methods: we used 720 archived videos from 120 patients referred to three UK PCD diagnostic services in 2015-17. One scientist from each PCD centre reviewed videos, blinded to diagnostic and clinical data, and scored them for final diagnosis using a standardised proforma. We compared the final scoring for each scientist to: a) a report containing final diagnosis from the MDT decision, and b) diagnostic criteria provided in the 2017 ERS PCD diagnostic guidelines.Results: sensitivity and specificity were: a) 96.1% and 100% respectively when compared to MDT decision, and b) 95.7% and 100% respectively when compared to ERS guidelines criteria. Inter-rater reliability between the three scientists was substantial (k=0.7) for ‘PCD positive’, and moderate (k=0.44) for ‘PCD highly unlikely’.Conclusions: specialist scientists accurately diagnosed PCD using HSVM analysis, with high inter-observer agreement. HSVM can be used to reliably counsel patients on their likely diagnosis on the same day as clinic appointment and inform clinicians on initiation of treatment while confirmatory investigations are conducted

    Folding Wings like a Cockroach: A Review of Transverse Wing Folding Ensign Wasps (Hymenoptera: Evaniidae: Afrevania and Trissevania)

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    We revise two relatively rare ensign wasp genera, whose species are restricted to Sub-Saharan Africa: Afrevania and Trissevania. Afrevania longipetiolata sp. nov., Trissevania heatherae sp. nov., T. hugoi sp. nov., T. mrimaensis sp. nov. and T. slideri sp. nov. are described, males and females of T. anemotis and Afrevania leroyi are redescribed, and an identification key for Trissevaniini is provided. We argue that Trissevania mrimaensis sp. nov. and T. heatherae sp. nov. populations are vulnerable, given their limited distributions and threats from mining activities in Kenya. We hypothesize that these taxa together comprise a monophyletic lineage, Trissevaniini, tr. nov., the members of which share the ability to fold their fore wings along two intersecting fold lines. Although wing folding of this type has been described for the hind wing of some insects four-plane wing folding of the fore wing has never been documented. The wing folding mechanism and the pattern of wing folds of Trissevaniini is shared only with some cockroach species (Blattodea). It is an interesting coincidence that all evaniids are predators of cockroach eggs. The major wing fold lines of Trissevaniini likely are not homologous to any known longitudinal anatomical structures on the wings of other Evaniidae. Members of the new tribe share the presence of a coupling mechanism between the fore wing and the mesosoma that is composed of a setal patch on the mesosoma and the retinaculum of the fore wing. While the setal patch is an evolutionary novelty, the retinaculum, which originally evolved to facilitate fore and hind wing coupling in Hymenoptera, exemplifies morphological exaptation. We also refine and clarify the Semantic Phenotype approach used in previous taxonomic revisions and explore the consequences of merging new with existing data. The way that semantic statements are formulated can evolve in parallel, alongside improvements to the ontologies themselves
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