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冰水的循環
程鎔時,鄧澧儒
高分子学报 , 1957,
Abstract: 在实驗工作中例如蒸餾溶劑時,常用冷水(自來水)的循環以達到冷却的目的。某些工作要求冷水有比較低的並且恆定的溫度,在可以控制的速率下作長時間的循環;但是自來水的溫度,尤其在夏天,往往嫌過高而且變化很大,不能满足要求。在本实驗室里,用了一種非常简便的使冰水(0℃)作长時間循環的設備,速率能調节並保持恆定,在許多情况下都可以滿意地使用。
循经感传和循经肌电反应
朱兵,荣培晶,李宇清,贲卉,徐卫东,高昕妍
中国科学 生命科学 , 2001,
Abstract: 应用电生理技术证明针刺引起循经感传现象的同时伴发有循经肌电发放,循经感传速度和循经肌电步进速度在厘米每秒范围.停止刺激后,循经感传现象首先在远端消失,并逐渐向近端推移,与此相应,肌电信号亦是首先在远端停止.分别采用臂丛神经阻滞和不影响感觉系统的区域性肌肉非动化阻滞法,循经感传和循经肌电信号一同消失,表明这些现象有赖于感觉-运动反射活动的相互作用.
循经感传和循经肌电反应  [PDF]
朱兵,荣培晶,李宇清,贲卉,徐卫东,高昕妍
中国科学 生命科学 , 2001,
Abstract: 应用电生理技术证明针刺引起循经感传现象的同时伴发有循经肌电发放,循经感传速度和循经肌电步进速度在厘米每秒范围.停止刺激后,循经感传现象首先在远端消失,并逐渐向近端推移,与此相应,肌电信号亦是首先在远端停止.分别采用臂丛神经阻滞和不影响感觉系统的区域性肌肉非动化阻滞法,循经感传和循经肌电信号一同消失,表明这些现象有赖于感觉-运动反射活动的相互作用.
湛江市公园绿地花境应用及配置调查  [PDF]
黎海利,谭飞理,刘锴栋,谭彩珠
北方园艺 , 2015, DOI: 10.11937/bfyy.201514021
Abstract: 针对湛江市主要公园绿地的花境植物应用及配置模式进行了实地调查,以期了解粤西地区花境应用现状及配置特色。结果表明目前湛江市应用于花境的植物共99种,隶属于46个科84个属;配置模式根据花境立地环境划分主要有林缘花境、路沿花境、临水花境、建筑物周围花境、草坪花境等。并对花境植物应用及花境配置等方面存在的问题进行了探讨。
苏童作品色彩构图三境  [PDF]
加晓昕?
天府新论 , 2010,
Abstract: 书画品评有四格之说。文学作品中的色彩构图与之有异曲同工之妙,构图也分三境。苏童作品善于用色,其色彩构图在物境、妙境、神境均表现充分,丰富了作品的审美空间。
Fes cycling
Berkelmans Rik
Journal of Automatic Control , 2008, DOI: 10.2298/jac0802073b
Abstract: Many research with functional electrical stimulation (FES) has been done to regain mobility and for health benefits. Better results have been reported for FES-cycling than for FES-walking. The majority of the subjects during such research are people with a spinal cord injury (SCI), cause they often lost skin sensation. Besides using surface stimulation also implanted stimulators can be used. This solves the skin sensation problem, but needs a surgery. Many physiological effects of FES-cycling has been reported, e.g., increase of muscles, better blood flow, reduction of pressure ulcers, improved self-image and some reduction of bone mineral density (BMD) loss. Also people with an incomplete SCI benefit by FES-cycling, e.g. cycling time without FES, muscle strength and also the walking abilities increased. Hybrid exercise gives an even better cardiovascular training. Presently 4 companies are involved in FES-cycling. They all have a stationary mobility trainer. Two of them also use an outdoor tricycle. One combined with voluntary arm cranking. By optimizing the stimulation parameters the power output and fatigue resistance will increase, but will still be less compared to voluntary cycling.
针刺“曲池”穴循经感传的循经表面肌电变化研究  [PDF]
李春日,谷忠悦
重庆医科大学学报 , 2014,
Abstract: 目的:研究针刺“曲池”穴激发的循经感传与循经表面肌电的关系。方法:分别针刺“曲池”穴、经脉非穴、非经非穴,引发循经感传,观察肱桡肌肌电活动的变化,记录肌电振幅和肌电变化维持时间。结果:针刺“曲池”穴,经脉非穴和非经非穴的循经感传阳性率有统计学差异(?字2=28.298,P=0.000),且针刺“曲池”穴和经脉非穴的循经感传阳性率高于非经非穴(?字2=24.783,P=0.000;?字2=19.113,P=0.000);针刺“曲池”穴,经脉非穴和非经非穴的肱桡肌肌电振幅有明显差异(?字2=61.659,P=0.000),且针刺“曲池”穴对肱桡肌肌电振幅高于经脉非穴和非经非穴(P=0.000);针刺“曲池”穴,经脉非穴和非经非穴的肌电变化维持时间有统计学差异(F=129.846,P=0.000),且针刺“曲池”穴的肌电变化维持时间长于经脉非穴和非经非穴,针刺“曲池”穴、经脉非穴、非经非穴均能引发肱桡肌肌电振幅的改变。结论:针刺“曲池”穴循经感传相伴的肱桡肌肌电活动强于经脉非穴和非经非穴,针刺“曲池”穴对肱桡肌表面肌电活动影响具有穴位特异性。
放牧对蝗虫栖境结构的改变及其对蝗虫栖境选择的影响  [PDF]
颜忠诚?,陈永林?
生态学报 , 1998,
Abstract: 放牧是草原植被利用的主要形式,牲畜的牧食极易改变蝗虫生存的栖境结构。本研究表明:在重牧区蝗虫发生的密度最高,而轻牧区蝗虫发生的密度最低。这说明,不同的牧压强度所形成的栖境对蝗虫栖境选择的适合度不一致。重牧后的栖境有利于蝗虫的发生,特别是有利于地栖型蝗虫的发生,而在不受放牧干扰、植物能自由生存下的栖境则有利于植栖型蝗虫的发生。合理放牧后的栖境则不利蝗虫发生。
从“无我之境”到“有我之境”―――中国文人园林的美学表述  [PDF]
王玲娟
东南文化 , 2005,
Abstract: ????文人园林,是中国传统文人追求人生至高精神境界的感性诠释。其美学理念是从“画境”到“意境”;其美学特征是情与景溶,天人合一;其最高审美理想和审美追求则是从“无我之境”到“有我之境”。
Assessing Cycling Participation in Australia  [PDF]
Chris Rissel,Cameron Munro,Adrian Bauman
Sports , 2013, DOI: 10.3390/sports1010001
Abstract: Planning and evaluating cycling programs at a national or state level requires accurate measures of cycling participation. However, recent reports of cycling participation have produced very different estimates. This paper examines the reported rates of cycling in five recent population surveys of cycling. Three surveys (one national and two from Sydney) asking respondents when they last rode a bicycle generated cycling participation (cycled in the past year) estimates of 29.7%, 34.1% and 28.9%. Two other national surveys which asked participants to recall (unprompted) any physical activity done for exercise, recreation or sport in the previous 12 months, estimated cycling in the past year as 11.1% and 6.5%. While unprompted recall of cycling as a type of physical activity generates lower estimates of cycling participation than specific recall questions, both assessment approaches produced similar patterns of cycling by age and sex with both approaches indicating fewer women and older adults cycling. The different question styles most likely explain the substantial discrepancies between the estimates of cycling participation. Some differences are to be expected due to sampling variability, question differences, and regional variation in cycling.
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