395 research outputs found

    Taxonomic changes for fifteen species of North American Mordellidae

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    In an attempt to more consistently apply generic concepts, 13 species of Mordellidae are transferred to different genera. Mordellistena bihamata (Melsheimer) and Mordellistena discolor (Melsheimer) are transferred to Falsomordellistena Ermisch, 1941, while 11 species (Mordellistena ancilla LeConte, Mordellistena floridensis Smith, Mordellistena guttulata Helmuth, Mordellistena impatiens LeConte, Mordellistena infima LeConte, Mordellistena lecontei Ermisch, Mordellistena minutalis Liljeblad, Mordellistena nigricans Melsheimer, Mordellistena parva Liljeblad, Mordellistena semiusta LeConte, and Mordellistena testacea Blatchley) are transferred to Mordellina Schilsky, 1908. Two species, Mordellistena rufa Liljeblad and Mordellina ustulata (LeConte), are proposed as junior synonyms of Mordellina ancilla (LeConte)

    First Record Of \u3ci\u3eAxymyiidae\u3c/i\u3e (Diptera: Nematocera: Axymyioidea) From Wisconsin

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    The nematoceran fly family, Axymyiidae, is recorded from Wisconsin for the first time. A single adult female Axymyia furcata was collected in flight near a dead log along a forested path in south central Wisconsin on 24 April 2000

    An annotated checklist of Wisconsin Mordellidae (Coleoptera)

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    A three-year survey of Wisconsin Mordellidae (Coleoptera) encompassing a compilation of data from literature records and local collections as well as field work including trapping, hand-collecting, and rearing yielded 68 species comprising 14 genera in three tribes. Sixty-three species (92% of Wisconsin fauna) represent new state species records, not previously recorded from the state in the literature. Plant-associations and state-specific temporal and spatial distribution data for larvae and adults are noted as available. Distributional records suggest 16 additional species and one additional genus are likely to occur in Wisconsin

    Taxonomic changes for fifteen species of North American Mordellidae (Coleoptera)

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    In an attempt to more consistently apply generic concepts, 13 species of Mordellidae are transferred to different genera. Mordellistena bihamata (Melsheimer) and Mordellistena discolor (Melsheimer) are transferred to Falsomordellistena Ermisch, 1941, while 11 species (Mordellistena ancilla LeConte, Mordellistena floridensis Smith, Mordellistena guttulata Helmuth, Mordellistena impatiens LeConte, Mordellistena infima LeConte, Mordellistena lecontei Ermisch, Mordellistena minutalis Liljeblad, Mordellistena nigricans Melsheimer, Mordellistena parva Liljeblad, Mordellistena semiusta LeConte, and Mordellistena testacea Blatchley) are transferred to Mordellina Schilsky, 1908. Two species, Mordellistena rufa Liljeblad and Mordellina ustulata (LeConte), are proposed as junior synonyms of Mordellina ancilla (LeConte)

    Effect of Solder Joint Flux Residue on Medical Guide Wire Performance

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    The effect of residual soldering flux on the mechanical properties of 304 stainless-steel core medical guide wires was analyzed. A soldering process joins the metallic components of the distal end of a medical guide wire product. Acidic soldering flux is used to prepare the surfaces of the metallic substrates. Manufacturing protocol utilizes an ultrasonic bath to remove excess flux from the soldered joints. Sample groups underwent different levels of cleaning: no cleaning, partial cleaning, and full ultrasonic bath cleaning to obtain varying residual flux levels. Experimental sample groups underwent corrosion acceleration in an environmental chamber at 37°C and 85% relative humidity for two 6-hour cycles. Control sample groups were maintained at ambient temperature and humidity. Specimens were tensile tested using a gauge length of 25 cm and a crosshead rate of 10 mm/min on an Instron testing system. A 500-Newton (N) load-cell and 50-N load-cell were used to test the control and experimental groups, respectively. The average maximum loads at fracture obtained by the ambiently exposed samples were 19.52N, 20.1N, and 23.83N for the uncleaned, partially cleaned, and fully cleaned groups, respectively. Experimental sample groups achieved average maximum loads of 13.54N, 13.91N, and 15.31N for the uncleaned, partially cleaned, and fully cleaned groups, respectively. Scanning Electron Microscopy (SEM) was utilized to analyze the presence of corrosion products in one specimen per sample group

    Ekologisk läskunnighet och naturrelationernas abstraktion i Antropocen

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    For the longer part of humanity’s history, knowledge about nature has been sensual, physical and concrete. Language has reflected a refined and direct relation to living surroundings. With the emergence of modernity, and urbanisation, a more abstract and general relation to nature was introduced. As common schooling started in Sweden, in the 1840s, this more abstract relation to nature was introduced to, and taught to children. Even pedagogy went “indoors”, focusing on naming things from a scientific point of view. This abstraction, though, still provided children with some kind of language to denote species and specifics in nature. With the introduction of reform pedagogy, in the 1970s and 80s, by-heart-knowledge was no longer prioritised. Today, we face an increasing ecological illiteracy among children and youngsters. The illiteracy is verbal, i.e. children do not know names for things they see in nature, but also physical. Many children are reported not to be able to function physically in an outdoors environment. The author asks what consequences this development has in the long run. Is a total abstraction from nature, a complete urbanisation, the consequence of living in the Antropocene? And what does it do to our existence

    Blocking the Dimerization of Polyglutamine-Expanded Androgen Receptor Protects Cells from DHT-Induced Toxicity by Increasing AR Turnover

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    Spinal and bulbar muscular atrophy (SBMA) is a neuromuscular degenerative disease caused by a polyglutamine expansion in the androgen receptor (AR). This mutation causes AR to misfold and aggregate, contributing to toxicity in and degeneration of motor neurons and skeletal muscle. There is currently no effective treatment or cure for this disease. The role of an interdomain interaction between the amino- and carboxyl-termini of AR, termed the N/C interaction, has been previously identified as a component of androgen receptor-induced toxicity in cell and mouse models of SBMA. However, the mechanism by which this interaction contributes to disease pathology is unclear. This work seeks to investigate this mechanism by interrogating the role of AR homodimerization- a unique form of the N/C-interaction- in SBMA. We show that, although the AR N/C-interaction is reduced by polyglutamine-expansion, homodimers of 5α-dihydrotestosterone (DHT)-bound AR are increased. Additionally, blocking homodimerization results in decreased AR aggregation and toxicity in cell models. Blocking homodimerization results in the increased degradation of AR, which likely plays a role in the protective effects of this mutation. Overall, this work identifies a novel mechanism in SBMA pathology that may represent a novel target for the development of therapeutics for this disease

    Outdoor Office Work - An Interactive Research Project Showing the Way Out

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    The physical boundaries of office work have become increasingly flexible. Work is conducted at multiple locations outside the office, such as at clients' premises, at home, in cafes, or when traveling. However, the boundary between indoor and outdoor environment seems to be strong and normative regarding how office work is performed. The aim of this study was to explore how office work may be conducted outdoors, understanding how it is being experienced by office employees and identifying its contextual preconditions. Based on a two-year interactive research project, the study was conducted together with a Swedish municipality. Fifty-eight participants engaged in the collaborative learning process, including 40 half-day workshops and reflective group discussions, co-interviews, and participants' independent experimentation of bringing work activities outdoors. Data was collected via interviews, group discussions and a custom-made mobile application. The results showed that a wide range of work activities could be done outdoors, both individually and in collaboration with others. Outdoor work activities were associated with many positive experiences by contributing to a sense of well-being, recovery, autonomy, enhanced cognition, better communication, and social relations, but also with feelings of guilt and illegitimacy. Conditions of importance for outdoor office work to happen and function well were found in the physical environment, where proximity to urban greenspaces stood out as important, but also in the sociocultural and organizational domains. Of crucial importance was managers' attitudes, as well as the overall organizational culture on this idea of bringing office work outdoors. To conclude, if working life is to benefit from outdoor office work, leaders, urban planners and policymakers need to collaborate and show the way out
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