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| 1 | Affective responses to supervised 10-week programs of resistance exercise in older adults显示文摘Background:Resistance exercise has numerous,well-documented benefits on the health and functional performance of older adults.However,little information exists on the affective responses to resistance exercise in this population.As affective responses can predict continued exercise behavior,examining if and how they differ between resistance exercise intensities and frequencies in older adults may provide important data to improve resistance exercise prescription.Methods:We monitored the affective responses of older adults when performing high-velocity,low-load(HVLL)or low-velocity,high-load(LVHL)resistance exercise once or twice weekly.A total of 40 moderately to highly active,but resistance-exercise naïve,older adults(60-79 years)completed 1 of 4 randomly assigned progressive resistance exercise conditions:HVLL once weekly(HVLL1:n=10),HVLL twice weekly(HVLL2:n=10),LVHL once weekly(LVHL1:n=10),or LVHL twice weekly(LVHL2:n=10).The Physical Activity Affect Scale,Felt Arousal Scale,Feeling Scale,rating of perceived exertion,Visual Analog Scale,and the Physical Activity Enjoyment Scale were used to assess enjoyment and affective responses.Results:The results from Physical Activity Enjoyment Scale(out of 35)suggest that all exercise conditions were largely and similarly enjoyable to older adults(HVLL1:30.9±2.4;LVHL1:31.9±3.6;HVLL2:30.9±3.5;LVHL2:30.2±3.7)despite greater fatigue(p=0.033;ηp^2p=0.22)and perceived workload(p=0.042;ηp^2=0.20)in LVHL(results from Visual Analog Scale).Conclusion:Moderately to highly physically active older adults may tolerate higher intensities of resistance exercise performed once or twice weekly without experiencing a negative impact on enjoyment.However,the role that supervision and social interaction played in shaping the participants’responses is unclear. | Darren L.Richardson Michael J.Duncan Alfonso Jimenez Paul M.Juris Neil D.Clarke | 2020 | Journal of Sport and Health Science2020，9，6： | 1 |
| 2 | 分形法估算分散性污染物的运移时间显示文摘污染物运移的分形模型导出一个新的适于任意浓度的污染物运移时间公式。对于一个高度非均质含水层中逐渐形成的污染羽,新公式预算出低浓度更早到达的测点。污染峰或羽的运移时间一般经常从达西定律中采用估算平均孔隙流速法得到,而此估算仅仅提供平均浓度(或污染脉冲的峰值浓度)的运移时间信息。近来,计算出任意浓度的运移时间是一个很直接的过程,并且对一个无反应污染物而言,其突破曲线部分的方程被发展。在文中,我们推导出这些方程去概括污染物运移的分形模型。 | Danelle D.Clarke Mark M.Meerschaert Stephen W.Wheatcraft 付东林 余超 | 2006 | 地下水2006，28，6： | 0 |
| 3 | Bright spots for inland fish and fisheries to guide future hydropower development显示文摘Hydropower production is one of the greatest threats to fluvial ecosystems and freshwater biodiversity.Now that we have entered the Anthropocene,there is an opportunity to reflect on what might constitute a‘sustainable’Anthropocene in the context of hydropower and riverine fish populations.Considering elements of existing practices that promote favorable social-ecological outcomes(i.e.,‘bright spots’)is timely given that there are plans to expand hydropower capacity in previously undammed rivers,intensify dam development in some of the world's largest river systems,and re-license existing facilities.We approach this from a pragmatic perspective:for the foreseeable future,hydropower will likely remain an important source of renewable electricity.To offer support for moving toward a more‘sustainable’Anthropocene,we provide syntheses of best practices during the siting,design,construction,operation,and compensation phases of hydropower development to minimize impacts on inland fish.For each phase,we offer positive examples(or what might be considered‘bright spots’)pertaining to some of the approaches described within our syntheses,acknowledging that these projects may not be viewed as without ecological and(or)societal detriment by all stakeholders.Our findings underscore the importance of protecting critical habitat and free-flowing river reaches through careful site selection and basinscale planning,infrastructure designs that minimize reservoir effects and facilitate safe passage of fish,construction of hydropower plants using best practices that minimize long-term damage,operating guidelines that mimic natural flow conditions,and compensation that is lasting,effective,inclusive,and locally relevant.Learning from these‘bright spots’may require engagement of diverse stakeholders,professionals,and governments at scales that extend well beyond a given site,river,or even basin.Indeed,environmental planning that integrates hydropower development into broader discussions of conserving regional biodiversity and ecosystem services will be of utmost importance. | William M.Twardek Ian G.Cowx Nicolas W.R.Lapointe Craig Paukert T.Douglas Beard Elena M.Bennett David Browne Andrew K.Carlson Keith D.Clarke Zeb Hogan Kai Lorenzen Abigail J.Lynch Peter B.McIntyre Paulo Pompeu Mark Rogers Alexis Sakas William W.Taylor Taylor D.Ward Zeenatul Basher Steven J.Cooke | 2022 | Water Biology and Security2022，1，1： | 0 |
| 4 | British Soccer Academy Personnel Perceive Psychological and Technical/Tactical Attributes as the Most Important Contributors to Development显示文摘Purpose Understanding the desired attributes for talented soccer players may give insight into the process of(de)selection and player development.This study aimed to explore soccer academy personnel’s perceptions of attributes associated with talent and development.Methods Thirty English and Scottish academy personnel(managers,coaches,recruitment,sports scientists)provided per-ceptions into what attributes contribute to‘talent’,via an online survey.Utilising an E-Delphi method,seven experts refined these inputs over several rounds until a consensus was reached,resulting in 82 agreed terminology.This terminology was resubmitted via a second online survey,where 45 academy personnel rated each using a Likert scale.Results A ranking of attributes by importance was produced,finding Psychological and Technical/Tactical attributes con-sidered of greatest importance.Differences were observed,whereby recruitment personnel consistently over-emphasised the importance of several attributes compared to other personnel(P=0.02-0.04).When analyzed within each age phase,11 variations in the perceived importance of attributes were demonstrated in the youth phase(11-16 years,P=0.01)compared with 5 in the professional phases(17-23 years,P=0.01-0.05)Conclusion The present study demonstrates that‘talent’requires multifaceted developments,with academy personnel per-ceiving psychological attributes the most important contributor to development. | Rich J.Kite Mark R.Noon Rhys Morris Peter Mundy Neil D.Clarke | 2022 | Journal of Science in Sport and Exercise2022，4，1： | 0 |
| 5 | 奇质子核169Ta高自旋态的研究显示文摘1986年在我院HI-13串列加器上用155Gd(19F,5n)169Ta反应研究了169Ta在束γ谱,建立了三个转动带。在此项工作的基础上我们与英国曼彻斯特大学物理系合作在Daresbury实验室利用122Sn(51V,4n)169Ta反应对169Ta的高自旋态进行了进一步的研究。 | 李生岗 温书贤 杨春祥 R.Chapman D.Clarke F.Khazaie J.C.Lisle J.N.MO J.D.Garrett G.B.Hagemann B.Herskin H.Ryde | 1987 | 中国原子能科学研究院年报1987，，1： | 0 |
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