1,764 research outputs found

    On some helminth parasites of the taruca, Hippocamelus antisensis (Mammalia: Artiodactyla)

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    En el presente estudio se da a conocer tres especies de helmintos parásitos colectados de una taruca (Hippocamelus antisensis) en el Perú. Una taruca macho adulto fue remitido al Instituto Veterinario de Investigaciones Tropicales y de Altura (IVITA), Sede Maranganí, por el Servicio Nacional Forestal y de Fauna Silvestre del Perú (SERFOR), para su respectiva necropsia. Se colectaron 2 nematodos del sistema digestivo, así como un quiste localizado en el omento. Para el diagnóstico parasitológico se evaluaron las características morfométricas de los especímenes colectados. Los nematodos fueron diagnosticados como Trichostrongylus axei y Mazamastrongylus sp.; por otro lado, el quiste fue diagnosticado como un metacestodo de Taenia hydatigena. El hallazgo de T. axei representa el primer registro para la taruca. En la presente nota se realiza también una breve descripción morfológica de los helmintos mencionados.This study presents three species of helminth parasites collected from a taruca (Hippocamelus antisensis) in Peru. Three helminth parasites from the taruca (Hippocamelus antisensis) are described in this report. An adult male taruca was remitted to the Veterinary Institute of Tropical and Highland Research (IVITA), Sede Maranganí, for the National Forest and Wildlife Service of Peru (SERFOR) for their respective necropsy. Two nematodes were collected from the digestive system, and 1 cyst was collected from the omentum. Morphometric characteristics of the specimens were evaluated for the parasitological diagnosis. Nematodes were diagnosed as Trichostrongylus axei and Mazamastrongylus sp.; on the other hand, the cyst was diagnosed as a metacestode of Taenia hydatigena. T. axei finding represents the first record for the taruca. A brief morphological description of each helminth and discussion about their hosts and distribution is done

    Ocurrencia de Mesocestoides sp. (Cestoda: Mesocestoididae) en el zorro andino (Lycalopex culpaeus)

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    In this work, we report Mesocestoides sp. parasiting one individual of Lycalopex culpaeus (Andean fox) captured from the Abra la Raya, Department of Cusco, Peru. The individual was necropsed in the Instituto Veterinario de Investigaciones Tropicales y de Altura (IVITA), Maranganí Headquarters. Numerous cestodes collected from the small intestine and morphologically analyzed. We provided a brief morphological description of Mesocestoides specimenes, and discuss concerning previous Mesocestoides species registered in Peru.En este trabajo, informamos Mesocestoides sp. parasitando a un individuo de Lycalopex culpaeus (zorro andino) procedente del Abra la Raya, departamento de Cusco, Perú. El individuo fue necropsiado en el Instituto Veterinario de Investigaciones Tropicales y de Altura (IVITA), sede de Maranganí. Numerosos cestodos se recolectaron del intestino delgado y se analizaron morfológicamente. Se proporciona una breve descripción morfológica de los especímenes de Mesocestoides, así como una discusión con respecto de especies anteriormente registradas para Perú

    Confirmación de Argas neghmei (Ixodida: Argasidae) en Perú y reporte del carpintero andino (Colaptes rupicola) como nuevo hospedero

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    This report describes the finding of soft ticks (Ixodida, Argasidae) parasitizing two Andean flickers (Colaptes rupicola) from the Nuñoa district, Melgar province in Puno, Peru (14°31'11.77"S; 70°32'15.95''W; elevation 3967 m). A total of 29 larval ticks were collected directly from the birds and morphologically identified as Argas neghmei. Diagnosis was based on the larval morphology and confirmed by molecular analysis of the tick mitochondrial 16S rRNA gene. A sequence of 363 base pair of this gene showed to be 100% identical with sequences of A. neghmei from Argentina and Chile (GenBank: FJ853598 and DQ295781). This finding confirms the presence of A. neghmei in Peru and adds the Andean flicker as a new host for this species.Este informe describe el hallazgo de garrapatas blandas (Ixodida, Argasidae) parasitando a dos carpinteros andinos (Colaptes rupicola) provenientes del distrito de Nuñoa, provincia de Melgar en Puno, Perú (14°31’11.77"S; 70°32’15.95"W; 3967 m de altitud). Un total de 29 larvas de garrapatas fueron colectadas directamente de las aves y posteriormente identificadas morfológicamente como Argas neghmei. El diagnóstico fue basado en la morfología de las larvas y confirmado mediante el análisis molecular del gen 16S ARNr mitocondrial de la garrapata. Un fragmento de 363 pares de bases de este gen mostró una identidad del 100% con secuencias registradas para A. neghmei de Argentina y Chile (GenBank: FJ853598 y DQ295781). Este hallazgo confirma la presencia de A. neghmei en Perú y agrega al carpintero andino como nuevo hospedero para esta garrapata

    Situación actual de la sarna e infecciones parasitarias en vicuñas (Vicugna vicugna) de la Región Cusco, Perú

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    The aim of this study was to identify and evaluate the cases of scabies caused by Sarcoptes scabiei and endoparasites in wild and captive vicuñas (Vicugna vicugna) from the Cusco Region, Peru. Scrapings of skin lesions were made and faecal samples were taken during the capture of vicuñas during the chaccus. The frequency of S. scabiei was 1.9% (54/2826), being 6.1% (48/777) in the wild and 0.2% (6/2049) in captivity. Likewise, F. hepatica (2.0%), Strongylus type eggs (42.1%), Nematodirus sp (6.8%), N. spathiger (26.5%), Trichuris sp (4.0%), Eimeria spp (85.0%), and Moniezia spp (2.7%) were found in a sample of 147 animals, being most cases monoparasitism.sarnaEl objetivo del presente estudio fue identificar y evaluar los casos de sarna causada por Sarcoptes scabiei y de endoparásitos en vicuñas silvestres y en cautiverio (Vicugna vicugna) de la Región Cusco, Perú. Se realizaron raspados de lesiones en piel y se tomaron muestras fecales durante la captura de vicuñas durante los chaccus. La frecuencia de S. scabiei fue de 1.9% (54/2826), siendo de 6.1% (48/777) en silvestría y de 0.2% (6/2049) en cautiverio. Asimismo, se identificaron a F. hepatica (2.0%), huevos tipo Strongylus (42.1%), Nematodirus sp (6.8%), N. spathiger (26.5%), Trichuris sp (4.0%), Eimeria spp (85.0%), y Moniezia spp (2.7%) en una muestra de 147 animales, siendo la mayor parte casos de monoparasitismo

    Infección natural por Fasciola hepatica en cérvidos del Perú

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    Natural infection by Fasciola hepatica is recorded in a white-tailed deer (Odocoileus virginianus) and a taruca (Hippocamelus antisensis), both from the department of Cusco. Animals were remitted to the Veterinary Institute (IVITA-Maranganí, FMV, UNMSM) by the authorities of the National Service of Flora and Fauna (SERFOR, Cusco Headquarters). Six trematodes were collected from the bile ducts during the necropsy of the animals, and they were preserved in 70% ethanol. Morphological analysis indicated that they correspond to F. hepatica. This was confirmed by analyzing of the mitochondrial DNA of the parasites by partially amplifying the cytochrome c oxidase subunit 1 (cox1) and the NADH dehydrogenase subunit 1 (nad1) genes. Analysis of these genes had an identity greater than 99% compared to genes from GenBank. The present study demonstrates the occurrence of F. hepatica in these cervids, thus adding two new definitive hosts for the parasite.En el presente trabajo se registra la infección natural por Fasciola hepaticaen un venado de cola blanca (Odocoileus virginianus) y en una taruca (Hippocamelus antisensis), ambos procedentes del departamento de Cusco. Los animales fueron remitidos al Instituto Veterinario (IVITA-Maranganí, FMV, UNMSM) por las autoridades del Servicio Nacional de Flora y Fauna (SERFOR, Sede Cusco). Durante la necropsia de los animales se colectaron seis trematodos de los conductos biliares, los cuales fueron preservados en etanol al 70%. Las observaciones morfológicas indicaron que se trataban de F. hepatica. Esto fue confirmado analizando el ADN mitocondrial de los parásitos amplificando parcialmente los genes citocromo c oxidasa subunidad 1 (cox1) y el NADH deshidrogenasa subunidad 1 (nad1). El análisis de estos genes tuvo una identidad mayor al 99% comparado con registros del banco de genes (GenBank). El presente estudio demuestra la presencia de F. hepatica en estos cérvidos, agregando así dos nuevos hospederos definitivos para el parásito

    Vertebral fracture risk in glucocorticoid-induced osteoporosis: the role of hypogonadism and corticosteroid boluses

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    Objective: The aim of this study was to identify the risk factors associated with fragility fracture (FF) development in glucocorticoid (GC)-treated patients. Methods: 127 patients (aged 62±18 years, 63% women) on GC-treatment (mean dose 14.5±14.1 mg/day and duration 47.7±69 months) were included. The clinical data collected included bone metabolism study (including gonadal axis), GC-treatment, disease activity, dual-energy X-ray absorptiometry analysis (evaluating densitometric osteoporosis (OP) and trabecular bone score (TBS) degraded microarchitecture values (DMA)), X-ray (assessing vertebral fractures (VF)), FRAX risk (GC-adjusted) and previous FF. Results: 17% of the patients had VF, 28% FF (VF and/or non-VF), 29% OP and 52% DMA. Patients with VF received more GC boluses (57.1% vs 29.5%, p=0.03), were older (68±13 vs 60±19 years, p=0.02), postmenopausal (100% vs 67%, p=0.02), had low testosterone levels (57% vs 11%, p=0.02), lower TBS values (1.119±0.03 vs 1.237±0.013, p100, p=0.01) and having received GC boluses (OR 3.45; 95% CI 1.04 to 12.15, p=0.01) were the main factors related to VF. Hypogonadism (OR 7.03; 95% CI 1.47 to 38.37, p=0.01) and FRAX >20 (OR 7.08; 95% CI 1.28 to 53.71, p=0.02) were factors related to FF. Conclusion: Hypogonadism is the principal risk factor for developing fractures in GC-treated men and women, whereas receiving GC boluses is a major factor for VF. These results indicate the importance of evaluating the gonadal axis in these patients

    Demonstration of background rejection using deep convolutional neural networks in the NEXT experiment

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    [EN] Convolutional neural networks (CNNs) are widely used state-of-the-art computer vision tools that are becoming increasingly popular in high-energy physics. In this paper, we attempt to understand the potential of CNNs for event classification in the NEXT experiment, which will search for neutrinoless double-beta decay in Xe-136. To do so, we demonstrate the usage of CNNs for the identification of electron-positron pair production events, which exhibit a topology similar to that of a neutrinoless double-beta decay event. These events were produced in the NEXT-White high-pressure xenon TPC using 2.6 MeV gamma rays from a Th-228 calibration source. We train a network on Monte Carlo-simulated events and show that, by applying on-the-fly data augmentation, the network can be made robust against differences between simulation and data. The use of CNNs offers significant improvement in signal efficiency and background rejection when compared to previous non-CNN-based analysesThis study used computing resources from Artemisa, co-funded by the European Union through the 2014-2020 FEDER Operative Programme of the Comunitat Valenciana, project DIFEDER/2018/048. This research used resources of the Argonne Leadership Computing Facility, which is a DOE Office of Science User Facility supported under Contract DE-AC02-06CH11357. The NEXT collaboration acknowledges support from the following agencies and institutions: Xunta de Galicia (Centro singularde investigacion de Galicia accreditation 2019-2022), by European Union ERDF, and by the "Maria de Maeztu" Units of Excellence program MDM-2016-0692 and the Spanish Research State Agency"; the European Research Council (ERC) under the Advanced Grant 339787-NEXT; the European Union's Framework Programme for Research and Innovation Horizon 2020 (2014-2020) under the Grant Agreements No. 674896, 690575 and 740055; the Ministerio de Economia y Competitividad and the Ministerio de Ciencia, Innovacion y Universidades of Spain under grants FIS2014-53371-C04, RTI2018-095979, the Severo Ochoa Program grants SEV-20140398 and CEX2018-000867-S; the GVA of Spain under grants PROMETEO/2016/120 and SEJI/2017/011; the Portuguese FCT under project PTDC/FIS-NUC/2525/2014 and under projects UID/FIS/04559/2020 to fund the activities of LIBPhys-UC; the U.S. Department of Energy under contracts number DE-AC02-07CH11359 (Fermi National Accelerator Laboratory), DE-FG02-13ER42020 (Texas A&M) and DE-SC0019223/DE SC0019054 (University of Texas at Arlington); and the University of Texas at Arlington. DGD acknowledges Ramon y Cajal program (Spain) under contract number RYC-2015 18820. JMA acknowledges support from Fundacion Bancaria "la Caixa" (ID 100010434), grant code LCF/BQ/PI19/11690012. We also warmly acknowledge the Laboratori Nazionali del Gran Sasso (LNGS) and the Dark Side collaboration for their help with TPB coating of various parts of the NEXT-White TPC. Finally, we are grateful to the Laboratorio Subterraneo de Canfranc for hosting and supporting the NEXT experiment.Kekic, M.; Adams, C.; Woodruff, K.; Renner, J.; Church, E.; Del Tutto, M.; Hernando Morata, JA.... (2021). Demonstration of background rejection using deep convolutional neural networks in the NEXT experiment. Journal of High Energy Physics (Online). 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    Juxtaposing BTE and ATE – on the role of the European insurance industry in funding civil litigation

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    One of the ways in which legal services are financed, and indeed shaped, is through private insurance arrangement. Two contrasting types of legal expenses insurance contracts (LEI) seem to dominate in Europe: before the event (BTE) and after the event (ATE) legal expenses insurance. Notwithstanding institutional differences between different legal systems, BTE and ATE insurance arrangements may be instrumental if government policy is geared towards strengthening a market-oriented system of financing access to justice for individuals and business. At the same time, emphasizing the role of a private industry as a keeper of the gates to justice raises issues of accountability and transparency, not readily reconcilable with demands of competition. Moreover, multiple actors (clients, lawyers, courts, insurers) are involved, causing behavioural dynamics which are not easily predicted or influenced. Against this background, this paper looks into BTE and ATE arrangements by analysing the particularities of BTE and ATE arrangements currently available in some European jurisdictions and by painting a picture of their respective markets and legal contexts. This allows for some reflection on the performance of BTE and ATE providers as both financiers and keepers. Two issues emerge from the analysis that are worthy of some further reflection. Firstly, there is the problematic long-term sustainability of some ATE products. Secondly, the challenges faced by policymakers that would like to nudge consumers into voluntarily taking out BTE LEI

    Penilaian Kinerja Keuangan Koperasi di Kabupaten Pelalawan

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    This paper describe development and financial performance of cooperative in District Pelalawan among 2007 - 2008. Studies on primary and secondary cooperative in 12 sub-districts. Method in this stady use performance measuring of productivity, efficiency, growth, liquidity, and solvability of cooperative. Productivity of cooperative in Pelalawan was highly but efficiency still low. Profit and income were highly, even liquidity of cooperative very high, and solvability was good

    Search for stop and higgsino production using diphoton Higgs boson decays

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    Results are presented of a search for a "natural" supersymmetry scenario with gauge mediated symmetry breaking. It is assumed that only the supersymmetric partners of the top-quark (stop) and the Higgs boson (higgsino) are accessible. Events are examined in which there are two photons forming a Higgs boson candidate, and at least two b-quark jets. In 19.7 inverse femtobarns of proton-proton collision data at sqrt(s) = 8 TeV, recorded in the CMS experiment, no evidence of a signal is found and lower limits at the 95% confidence level are set, excluding the stop mass below 360 to 410 GeV, depending on the higgsino mass
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