2,878 research outputs found

    Tamsiniella labiosa gen. et sp. nov., a new freshwater ascomycete from submerged wood

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    Investigations into the fungi occurring on wood submerged in freshwater ecosystems have revealed a unique, but characteristic group of fungi. In this paper a new pyrenomycete, Tamsiniella labiosa gen. et sp.nov,, is described and illustrated with light, scanning, and transmission electron micrographs. The germs has remarkable short: stipitate cylindrical asei with an internal refractive apical ring that are apically truncate and have an external thickening. Ascospores are ellipsoidal-fusiform and surrounded by a mucilaginous sheath. At the transmission electron microscope level, the annulus iv of the ascus apical apparatus is differentiated from the inner ascus wail layer and is composed of horizontally oriented, eiectron-dense fibrillar material. A narrow plug is present in the centre of the apical ring. An electron-dense amorphous regk oecurs between the outer ascus wall layer and the annulus part of the apical apparatus. The outer ascus wail layer is lacking a the apex. The ultrastructure of the ascus apex differs from those described in the Lasiosphaeriaceae, Sordariaceae, and Xylariaceae.published_or_final_versio

    A systematic review of the psychometric properties of transition readiness assessment tools in adolescents with chronic disease

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    BACKGROUND: Health care transition of adolescents with chronic conditions may be unsuccessful when patients have not acquired the necessary skills and developmental milestones. It is therefore critical for health care providers to assess the readiness for transition of their adolescent patients. This is currently hindered by the lack of a recognised, well-established transition-readiness assessment tool. METHODS: We conducted a systematic review of all transition-readiness tools for adolescents with chronic medical conditions published in peer-reviewed journals. Tools were rated by the methodological quality of the validation studies, and the psychometric measurement qualities of each tool. RESULTS: Ten different assessment tools were identified. Seven targeted specific diseases and 3 tools were generic. Most tools were poorly validated with only one tool, the Transition Readiness Assessment Questionnaire (TRAQ) demonstrating adequate content validity, construct validity, and internal consistency. CONCLUSION: The TRAQ was the best-validated transition-readiness tool, with additional benefits of disease-neutrality. Further research should focus on testing the predictive validity of this tool, and exploring correlation with transition-outcomes, in an international population

    UKAIRO: internet-scale bandwidth detouring

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    The performance of content distribution on the Internet is crucial for many services. While popular content can be delivered efficiently to users by caching it using content delivery networks, the distribution of less popular content is often constrained by the bandwidth of the Internet path between the content server and the client. Neither can influence the selected path and therefore clients may have to download content along a path that is congested or has limited capacity. We describe UKAIRO, a system that reduces Internet download times by using detour paths with higher TCP throughput. UKAIRO first discovers detour paths among an overlay network of potential detour hosts and then transparently diverts HTTP connections via these hosts to improve the throughput of clients downloading from content servers. Our evaluation shows that by performing infrequent bandwidth measurements between 50 randomly selected PlanetLab hosts, UKAIRO can identify and exploit potential detour paths that increase the median bandwidth to public Internet web servers by up to 80%

    Inhaled foreign bodies: children with peanut in airway

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    Foreign body aspiration is a common problem in young children. Many patients present after a significant delay despite having a witnessed choking event. Moreover, their presentations may mimic other common respiratory problems like pneumonia or asthma. It is extremely important to be attentive to history taking and clinical signs that may indicate early bronchoscopy to confirm the diagnosis.published_or_final_versio

    Designing CALL for learning Chinese characters

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    Despite the enormity of its quantity, printed or written forms of Chinese characters are composed from a limited number of common components. For example, the characters for pond( ), lake( ), stream( ), river ( ), sea( ) and ocean( ) all contain a component in common, a three-dot component representing water. When this clue is explicitly highlighted to students, the learning of Chinese characters can be greatly enhanced. Using a computer to help students to develop this kind of structural awareness about language learning has not yet been thoroughly examined. This paper reports on the design of CALL software based on a pedagogic method which helps students to develop the higher order skills to analyse and categorise Chinese characters by using components. The result of the classroom experiment has shown supportive evidence on the feasibility and the need of integrating the software with an affective and contextual way of teaching Chinese characters.postprin

    Promotor hypermethylation of the CpG Islands of human Ras Association Domain Family 1A gene (RASSF1A) in adenocarcinoma of lung in Hong Kong Chinese - a comparison between smokers and non-smokers

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    Neuroprotective effects of minocycline on double-stranded RNA-induced neurotoxicity in cultured cortical neurons

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    1. Minocycline, memantine,and glycoconjugate were assessed for their ability to protect cultured primary cortical neurons against double-stranded RNA-induced neurotoxicity. 2. Minocycline but not memantine or glycoconjugate protected cultured cells and warrants further investigation.published_or_final_versio

    Validity and Reliability of Curl-Up Test on Assessing the Core Endurance for Kindergarten Children in Hong Kong

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    Objective: The purpose of this study was to examine the test-retest reliability and the criterion validity of a curlup test (CUT) as a measure of core stability, core endurance and dynamic stability in kindergarten children. CUT performance was also compared to half hold lying test (HHLT) and walking time on course (WTC) among without obstacle, with low obstacle and high obstacle measures of core stability, core endurance and dynamic stability. Methods: To estimate reliability, 33 males and 27 female kindergarten children (M aged=4.5 years old) performed the CUT on 2 different days. In the validity phase of the study, scores of all participants were obtained on three field test measures of core stability, core endurance and dynamic stability (CUT, HHLT and WTC). Results: Results indicate that the MCU test has no significant correlation on intra-class test-retest reliability (R=0.13, p>0.01). The criterion validity of the CUT for kindergarten children has is comparable to that of the HHLT(r=0.98, p<0.01) and WTC without obstacle(r=0.96, p<0.01), with low obstacle (r=0.96, p<0.01) and with high obstacle (r=0.98, p<0.01). Result indicates that the CUT test cannot produces reasonably accurate and stable measures of core stability, core endurance and dynamic stability. Conclusion: These preliminary findings provide evidences into the CUT test cannot produces reasonably accurate and stable measures of core stability, core endurance and dynamic stability for kindergarten children

    The reasons of dropout of sport in Hong Kong school athletes

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    domains. The aim of this study was to identify the potential dropout reasons of school athletes and to examine if their perception of dropout was affected by the previous dropout experience. There were 50 subjects who were divided into two groups based on their previous dropout experience (Dropout Group=22, No Dropout Group=28). They filled a questionnaire about potential dropout reasons of the current sport. Coach and teammates were two predominated reasons of dropout; Influence of parent and training seemed to affect the termination of the sport to a lesser extent. Moreover, the perception of social value and lost focus were significantly different between two groups. Character of coach and teammates affect the engagement of training in school athletes. However, the parental influence had less influence than expected. Training intensity played little role as the dropout reason. Previous experience of dropout had an impact of potential dropout reasons on their current sport training

    A Systematic Review of Recreation Therapy for Depression in Older Adults

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    Background: Recreation therapy (RT) provides a flexible and powerful treatment for depression associated with aging. This article reviewed the effectiveness of RT to treat depression in older adults. Method: Five electronic databases were employed to identify interventional studies on RT in depressed older adults: Pubmed, PsycINFO, ProQuest, Academic Search Premier and ERIC. Articles were screened against inclusion criteria and assessed with respect to methodological quality. Results: A systematic literature review included 18 articles. Fourteen studies reported improvement in depression but 6 studies lack adequate significance in the positive effect of RT. Methodological quality assessment of 13 randomizedcontrolled trials and 5 non-controlled studies indicated an overall mean of 5.67 ± 1.94 points out of 9. Conclusion: There were positive findings that RT is effective in improving geriatric depression. Future investigation is encouraged to explore the mechanism between physical activity RT and depression improvement
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