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Effects of epiphyte on submerged macrophyte in Taihu Lake.
附着生物对太湖沉水植物影响的初步研究

SONG Yu-zhi,QIN Bo-qiang,GAO Guang,
宋玉芝
,秦伯强,高光

应用生态学报 , 2007,
Abstract: With the eutrophicated Meiliang Bay and macrophyte-dominated Gonghu Bay of Taihu Lake as test areas, this paper studied the biomass of epiphyte and its effect on submerged macrophyte during the vigorous growth season (May-June) of submerged macrophyte in 2005. The results showed that the biomass of epiphyte attached on macrophyte was higher in Gonghu Bay than in Meiliang Bay, and varied within different macrophyte species. The epiphyte inhibited the photosynthetic rate of submerged plant significantly, which could be up to 91.9% in June, and this effect increased with increasing epiphyte biomass but varied with different host plants.
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.
Bellamya sp. and its interaction with submerged macrophytes in Lake Taihu
太湖环棱螺(Bellamya sp.)及其与沉水植物的相互作用

BAI Xiu-Ling,GU Xiao-Hong,HE Jun,
白秀玲
,谷孝鸿,何俊

生态学报 , 2009,
Abstract: We measured nutrient release by the freshwater snail Bellamya sp. under different environmental conditions. In addition, we examined the effects of Bellamya sp. on water transparency, nutrient concentrations, growth of naturally-occurring phytoplankton, and its interactions with Hydrilla verticillata Royle, Elodea nuttalli ST John of Lake Taihu, China. Results showed that the rate of nutrient release by snails was affected by water temperature and the food they stored. The release rates increased with temperature increases. Nutrient release rates by snails were higher after they fed than when they were starved at the constant temperature. Bellamya sp. increased the transparency of water column on a short term, while the release of nutrients led to measurable increases in concentrations of nitrogen and phosphorus. The nutrients released by Bellamya sp., combined with adequate temperature and illumination, allowed phytoplankton growth to exceed remove by snail feeding. At the same time,nutrient release by Bellamya sp. promoted the growth of Hydrilla verticillata Royle and of Elodea nuttalli ST John. A survey of Bellamya sp. in Lake Taihu showed that snail biomass in the submerged macrophyte-dominated areas was higher than that in areas dominated by phytoplankton, and the submerged macrophytes played an important role in the distribution of snails. Collectively, the combination of biomanipulation of snails and restoration of submerged macrophytes shows promise in countering eutrophication, and improvement of water quality.
Can planting submerged plants make the water clear in Lake Taihu?
在太湖中栽种沉水植物能使水变清吗

LIU Jing-Qun,CHEN Jia-Zhang,
刘敬群
,陈家长

生态学报 , 2009,
Abstract: Shallow lake restoration is a pilot research in Environmental Sciences. Can planting submerged plants make the water clear and lead the reverse switches to plant dominance in eutrophic Lake Taihu? The answer is less possible, because there is competition between phytoplankton and submerged plants. Whether the submerged plants can grow in waters is dependent on the light availability. Phytoplankton has strong shading effects on plants in eutrophic lakes, and thus decreases the plants' competitive abilities. Alternatively, the Cladocera may be disappeared or reduced in numbers for the phytoplankton to gain advantage. Top\|down effects are likely to be more important in shallow lakes. Therefore, fish's predatory control on zooplankton is higher in shallow lakes, resulting in less possibility of grazer control of algae by the Cladocera. Under such condition, the colonization of submerged plants is less possible. If the plants are further damaged or meet bad weather, they may be suddenly loss together. Hence, the survival rate of submerged plants is very low in eutrophic lakes. All these correspond to the Alternative Stable States Concept of shallow lakes.
Photosynthetic fluorescence characteristics of floating-leaved and submersed macrophytes commonly found in Taihu Lake.
太湖常见浮叶植物和沉水植物的光合荧光特性比较

SONG Yu-zhi,CAI Wei,QIN Bo-qiang,
宋玉芝
,蔡炜,秦伯强

应用生态学报 , 2009,
Abstract: 利用水下饱和脉冲荧光仪(DIVING-PAM),原位观测太湖常见的水生植物菱、荇菜、苦草、黑藻的最大光化学量子产量(Fv/Fm)及在暗适应和光适应条件下的快速光曲线.结果表明:浮叶植物菱和荇菜光系统Ⅱ的潜在最大光合作用能力高于沉水植物苦草和黑藻,其最大量子产量分别为0.837、0.831、0.684和0.764;菱和荇菜的最大电子传递速率、半饱和光强分别高于沉水植物苦草和黑藻,且在光适应条件下尤为显著.
DISSOLVED INORGANIC CARBON UPTAKE IN TWO SUBMERGED MACROPHYTES FROM TAIHU LAKE CHINA
太湖两种大型沉水植物无机碳利用效率差异及其机理

XIAO Yue-E,CHEN Kai-Ning,DAI Xin-Bin,XU Xiao-Ming,
肖月娥
,陈开宁,戴新宾,许晓明

植物生态学报 , 2007,
Abstract: 该文通过pH值漂移实验比较了太湖常见的两种沉水植物菹草(Potamogeton crispus)和马来眼子菜(P.malaianus)对无机碳利用效率的差异,并测定两者无机碳吸收关键酶——碳酸酐酶的活性,探讨了两者无机碳吸收效率差异的原因。根据太湖自然水体的无机碳条件设定了3种不同碱度条件,测定起点pH值和无机碳条件。不同碱度下pH值漂移变化和总无机碳/碱度比值的结果表明,两个种均能利用HCO3-,适应低无机碳条件。两者对HCO3-的吸收速率决定于其浓度大小,该离子浓度越大,光合速率越高。但是对HCO3-的吸收速率存在差异:马来眼子菜在各碱度下终点pH值显著高于菹草,整体光合速率较高。CO2-光合速率响应曲线表明,在高pH值(CO2受到限制)时,马来眼子菜对CO2亲和力较大。尽管菹草在pH值较低(6.5~7.0)时有相对较高的光合速率,但是基于太湖自然水体夏季高pH值(>8.5)条件,马来眼子菜具有更大的生长优势,成为优势种群。两者无机碳吸收速率的差异是造成它们生活史差异和时间生态位的一重要原因。同时,马来眼子菜碳酸酐酶活性明显高于菹草,表明在相同无机碳条件下,前者催化HCO3-与CO2之间的转化效率更高,这可能是造成两者无机碳吸收速率差异的原因。
郭店楚简《太一生水》“托其名”思想探微  [PDF]
谭宝刚
安徽大学学报(哲学社会科学版) , 2007,
Abstract: 楚简《太一生水》“托其名”之“名”是天地初开时的“混沌”名。“混沌”就是“清浊”或“清混”(也作“清浑”),即《太一生水》中之“青昏”。因此,“”应厘定为“青昏”而非“请问”。“托其名”就是依照贵道原道循道用道的逻辑理路循序演进,对宇宙生成过程进行逆向追述,上溯至天地的源头,因“青昏”之名,循“道”之字,以行“浑沌氏之术”。
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.
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