652 research outputs found

    Faunistic Composition, Ecological Properties and Zoogeographical Composition of the Family Elateridae (Coleoptera) of the Central Anatolian Region of Turkey

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    The focus of this study was to understand the faunistic composition, ecological properties and zoogeographical composition of Elateridae (Coleoptera) of the Central Anatolian region. 72 species belonging to seven subfamilies and 25 genera were identified. The major part of the Elateridae fauna of the Central Anatolian region is formed by the subfamilies Elaterinae and Cardiophorinae. The genus Cardiophorus was the most species-rich genus. The species composition of the Elateridae fauna of the Central Anatolian region is partially consistent with known Elateridae fauna of Turkey. The Central Anatolian region shares most species with the European part of the Western Palaearctic as does the Elateridae fauna of Turkey. Detailed localities of nine species are given for the first time for Turkey, with emphasis on the Central Anatolian region

    High intensity effects of fixed target beams in the CERN injector complex

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    The current fixed target (FT) experiments at CERN are a complementary approach to the Large Hadron Collider (LHC) and play a crucial role in the investigation of fundamental questions in particle physics. Within the scope of the LHC Injectors Upgrade (LIU), aiming to improve the LHC beam production, the injector complex will be significantly upgraded during the second Long Shutdown (LS2). All nonLHC beams are expected to benefit from these upgrades. In this paper, we focus on the studies of the transverse instability in the Proton Synchrotron (PS), currently limiting the intensity of Time-Of-Flight (ToF) type beams, as well as the prediction of the impact of envisaged hardware modifications. A first discussion on the effect of space charge on the observed instability is also being presented

    New species and new or interesting records of click-beetles from Iran and Iraq (Coleoptera, Elateridae)

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    This paper provides new records and descriptions of eight new species of clickbeetles (Coleoptera, Elateridae) from Iran and Iraq. The species are grouped according to tribes and the new taxa belong to the genera Calais Castelnau, Idotarmonides Agajew, Melanotus Eschscholtz, Craspedostethus Schwarz, Dicronychus Brullé; new names are proposed for two species of Cardiophorus Eschscholtz (preoccupied)

    Experience and Satisfaction with Hearing Aid Services Delivered via Teleaudiology in Adult Populations: A Systematic Review

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    Objective: The goal of this systematic review is to examine the current literature to look at patient experience and satisfaction with teleaudiology services. Specifically, teleaudiology services that occur at the fitting and/or post-fitting stage of the adult hearing aid patient journey. Methods: A comprehensive search utilizing PubMed, MEDLINE and EBSCOhost databases were conducted to identify pertinent, peer-reviewed, articles related to the clinical usage or clinical applications of teleaudiology for hearing aid fittings and/or follow-up for adult individuals. Inclusion criteria were studies that are empirical, included quantitative results, articles published in English, peer-reviewed articles; and persons who are 18 years or older. Exclusion criteria included: records relating to persons under the age of 18; the application of teleaudiology as it relates solely to cochlear implants, tinnitus, aural rehabilitation, and/or diagnostic hearing assessment; hearing aid evaluations, fitting and/or follow-up conducted solely in person; descriptive articles; and records only containing an abstract. Results: A total of six studies met the inclusion criteria for this review. Three studies utilized two intervention groups to compare those who received teleaudiology (TA) hearing aid services versus the same services face-to-face, or in-person (IP). One study evaluated the use of blended services to assess the effectiveness and quality of TA and IP hearing aid follow-up services, and to determine if order in which services were received mattered. The remaining two studies used one intervention group to assess the feasibility of hearing aid teleaudiology services. All but one study utilized a facilitator to help carry out TA services. Discussion: Overall findings of the reviewed studies demonstrate the effectiveness of teleaudiology as a means of service delivery for hearing aid evaluations, programming, fitting, fine-tuning and providing counseling. The use of TA services for hearing aid fittings and/or follow-ups have no adverse effects on patient outcome when utilized over IP services. Facilitators played a major role in helping carry out services and they served as the remote audiologists’ “hands,” “eyes,” and “mouth.” Technological disruptions occurred in several studies and was the most common issue that impacted participant satisfaction with TA services. Conclusion: The findings of this review suggest TA is an effective way to deliver hearing aid services for adult populations. Additionally, results suggest effectiveness and feasibility of TA services, as well as patient satisfaction with services, are comparable to IP hearing aid services. While TA appears to be the future of our profession, more research is needed in the area of teleaudiology to continue to demonstrate that this is a viable service delivery model and to highlight/address holes in current literature and current day practice. Key Words: audiology, hearing aid, tele, ehealth, teleaudiology and remote

    TWO NEW CLICK-BEETLES FROM NORTHERN ITALY AND THE IBERIAN PENINSULA (COLEOPTERA ELATERIDAE)

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    Abstract: Two new species of click-beetles belonging to the genera Athous (subgenus Orthathous) and Dicronychus, from northern Italy (Lombardy), Spain and Portugal are described. Key words: Coleoptera, Elateridae, Athous, Dicronychus, new species, Italy, Spain, Portugal. Dos elatéridos nuevos del norte de Italia y de la Península Ibérica (Coleoptera, Elateridae) Resumen: Se describen dos especies nuevas de elatéridos pertenecientes a los géneros Athous (subgénero Orthathous) y Dicronychus, del norte de Italia (Lombardía), España y Portugal

    High Frequency Effects of Impedances and Coatings in the CLIC Damping Rings

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    The Compact Linear Collider (CLIC) is a 3 TeV e+e- machine, currently under design at CERN, that targets to explore the terascale particle physics regime. The experiment requires a high luminosity of 2x10^34 cm^2 s^-1, which can be achieved with ultra low emittances delivered from the Damping Rings (DRs) complex. The high bunch brightness of the DRs gives rise to several collective effects that can limit the machine performance. Impedance studies during the design stage of the DR are of great importance to ensure safe operation under nominal parameters. As a first step, the transverse impedance model of the DR is built, accounting for the whole machine. Beam dynamics simulations are performed with HEADTAIL to investigate the effect on beam dynamics. For the correct impedance modeling of the machine elements, knowledge of the material properties is essential up to hundreds of GHz, where the bunch spectrum extends. Specifically, Non Evaporable Getter (NEG) is a commonly used coating for good vacuum but its properties up to high frequencies were still widely unexplored. A new method using rectangular waveguides is proposed, benchmarked and applied for the first time to characterize NEG up to hundreds of GHz. The numerical tools used for the DR studies are applied and benchmarked with measurements in other light sources. In particular, single bunch measurements were performed in the ALBA light source and compared to the model prediction using HEADTAIL. The impedance budget of ALBA was estimated before and after the installation of a pinger magnet. Furthermore, studies were also carried out for the Swiss Light Source (SLS) upgrade to investigate the machine performance in terms of single bunch instabilities for lattices with negative momentum compaction factor

    Conceptual Design of the CLIC damping rings

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    The CLIC damping rings are designed to produce unprecedentedly low-emittances of 500 nm and 5 nm normalized at 2.86 GeV, in all beam dimensions with high bunch charge, necessary for the performance of the collider. The large beam brightness triggers a number of beam dynamics and technical challenges. Ring parameters such as energy, circumference, lattice, momentum compaction, bending and super-conducting wiggler fields are carefully chosen in order to provide the target emittances under the influence of intrabeam scattering but also reduce the impact of collective effects such as space-charge and coherent synchrotron radiation. Mitigation techniques for two stream instabilities have been identified and tested. The low vertical emittance is achieved by modern orbit and coupling correction techniques. Design considerations and plans for technical system, such as damping wigglers, transfer systems, vacuum, RF cavities, instrumentation and feedback are finally reviewed

    A Time-Domain Analysis of Intracardiac Electrograms for Arrhythmia Detection

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73045/1/j.1540-8159.1991.tb05116.x.pd

    IMPEDANCE EFFECTS IN THE CLIC DAMPING RINGS

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    Due to the unprecedented brilliance of the beams, the performance of the Compact Linear Collider (CLIC) damping rings (DR) is affected by collective effects. Single bunch instability thresholds based on a broad-band resonator model and the associated coherent tune shifts have been evaluated with the HEADTAIL code. Simulations performed for positive and negative values of chromaticity showed that higher order bunch modes can be potentially dangerous for the beam stability. This study also includes the effects of high frequency resistive wall impedance due to different coatings applied on the chambers of the wigglers for e-cloud mitigation and/or ultra-low vacuum pressure. The impact of the resistive wall wake fields on the transverse impedance budget is finally discussed
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