查询词典 Edison effect

A quasi one-dimensional, time dependent system model based on the parallel compressor theory was used to compute the effect of inlet distortion on turbine engine stability; Through Modifying steady state continuum equation, momentum equation and energy equation, the effect of power extraction and additional bleed on turbine engine running line was computed. Unsteady state continuum equation, momentum equation and energy equation were solved for computing the effect of acceleration on turbine engine running line.

其中，进气畸变对发动机气动稳定性影响的计算采用平行压气机模型，基于李亚普诺夫理论的方法完成；附加引气、功率提取对发动机气动稳定性的影响采用通过对发动机转子间质量、动量、能量守恒方程进行修正的方法进行；加速过程对发动机气动稳定性的影响采用欧拉方法求解动态的质量、动量、能量守恒方程的方法完成；最后采用&层迭&的方法进行各种降稳因素的综合评估。

Results: fops had inhibitory effect on o 2 production in vitro, having a 50% of inhibitory concentration (ic50) of 3.866×10-6 g/ml, and a weak inhibitory effect on h2o2 production with a ic50 of l.668×10-3 g/ml but showed a potent inhibitory effect on the various free radicals produced by "respiratory burst" of human leukocyte. fops (20, 40, 80 mg/kg) increased the sod activity in myocardial tissue, liver and kidney of mice and decreased the mda content of myocardial tissue, liver, kidney and spleen of mice.

结果：在体外阿里红多糖可有效的清除o 2，其ic50为3.866×10-6；对h2o2的清除作用很弱，但能抑制人血嗜中性粒细胞&呼吸爆发&产生的多种自由基，ic50为1.668×10-3；阿里多红糖（20、40、80 mg/kg）可明显增加小鼠心脏和肝脏中sod的活性，其中剂量为40、80 mg/kg的阿里红多糖可明显增加肝脏中sod的活性，同时各给药组均可明显减少小鼠心脏、肝脏、肾脏和脾中mda的含量，与对照组相比较差异有统计学意义（p.05）。

PL could maintain cellular membrane integrity,induce the oxidative damage to biomembrane by free radicle and improve antioxygen ability and ATPase activity of larval fish.5 Effect of phospholipid supplementation in formulated microdiets on foregut and liver histological changes of Pelteobagrus fulvidraco larvaePurpose:This study was undertaken to determine the effect of commercial PL supplementation in formulated microdiets on foregut and liver histological changes of Pelteobagrus fulvidraco larvae,which can further investigated the mechanism of the growth-promoting effect of PL with the study of histology and digestive physicalogy.

磷脂能够维持黄颡鱼仔稚鱼细胞膜的完整性，降低自由基对生物膜的过氧化损伤，提高机体抗氧化系统的活力和ATP酶活性。5饲料中不同磷脂添加水平对黄颡鱼仔稚鱼前肠和肝脏组织学的影响目的：研究在实际配方的人工微粒饲料中添加商品大豆磷脂对黄颡鱼仔稚鱼消化肠道肝脏器官发育及脂肪消化吸收的影响，进一步从组织学消化生理角度揭示磷脂对仔稚鱼促生长作用机理。

Afterreflections on the long history of size effect studies, attention isfocused on three main types of size effects, namely the statistical sizeeffect due to randomness of strength, the energy release size effect,and the possible size effect due to fractality of fracture ormicrocracks.

在回顾了尺寸效应研究的悠远发展史以后，着重讨论了三种主要类型的尺寸效应，即由于强度随机性引起的统计尺寸效应、能量释放的尺寸效应和由于微裂纹或断裂的分形特性可能引起的尺寸效应。

ABSTRACT It occurs that the performance of silicon bipolar transistors degradates seriously at low temperatures due to the gap-narrowing effect、the carrier freeze-out effect and the trapping effect of shallow dopants, which has significant influence on the operation of ultra-high-speed bipolar circuits and BiCMOS circuits at low temperatures.

硅双极晶体管由于禁带变窄效应，载流子冻析效应和浅能级杂质陷阱效应的作用，其电流增益和频率性能在低温下严重退化，从而极大地影响了低温高速双极电路和高性能的低温BiCMOS技术的发展。

Result Among 6 reagents, Dimethomorph, Huishuangte, Gold-ridomil and Miejuncheng all had good control effect on grape downy mildew. In the area where downy mildew was serious, Huishuangte had best disease control effect. In the area where disease was not so severe, Dimethomorph and Gold-ridomil were in the optimal control effect and the next one was Miejuncheng.

结果］6种药剂中，烯酰吗琳、灰霜特、金雷多米尔和灭菌成对葡萄霜霉病均有较好的防效，其中在霜霉病发生严重的地区，灰霜特防病效果最好，在发生较轻的地区，烯酰玛琳和金雷多米尔防效最好，其次为灭菌成。

The plant ventilation status under different conditions is calculated with steady k-ε turbulence model. Results show that different surface has a different impact on natural ventilation. The ground surface constructed with some good heat-absorbing materials will have an enhanced surface effect. The surface effect is fully put into effect at the maximum outdoor windspeed of 1.5m/s.

在稳态条件下，采用k-ε湍流模型，计算了不同工况下的厂房通风状况，结果表明，不同的地表对自然通风的影响是不同的，厂房内的地面采用吸热性能好的材料构筑，会增强地表效应；地表效应得以充分体现的最大室外风速为1.5m/s。

Stainless steel and acid-resistant keramics showed less effect on the water's qulity, while the fiber steel which had used for storage in the experiment showed great effect.5 The addition of ultrasonic could remarkably enhance the removal effect of the organics in electrocoagulation treatment, and the removal rate was enhanced with the increasing ultrasound power.

在电流密度为3A/m2，电极板间距为5mm，停留时间为30min的条件下，电凝聚对TOC去除率为53.57%，施加600W超声波后提高到了73.71%；与单纯的电凝聚法相比，采用超声波—电凝聚处理时，水中各分子量区间有机物的去除率提高了11.73%～39.56%；亲水性和疏水性有机物的去除率分别提高了16.67%和28.30%。

Through analyzing the conditions and formation of the investment multiplier effect , this paper demonstrates the leakages existing in the process of the investment multiplier effect , and makes the empirical analysis on the investment multiplier effect in Shanxi Province.

通过对投资乘数作用的条件、形成过程的分析，论证了在投资乘数作用过程中存在的漏损，并对山西省投资乘数效应进行了实证分析。

To make a comprehensive view of metapopulation researches, we folly analyze and summarize the present concepts, theories and models of metapopulation in this paper, which primarily includes the dynamical models and simulation approaches of single and competitive metapopulations. Based on the Levin's patch occupant model, the center framework of metapopulation researches, primary principles and mechanisms are discussed. First, Levins rule: the fraction of empty patch will remain constant with habitat destruction as long as metapopulation survives. This rule implies that empty patches have determinant effects on persistence and conservation. Second. Allee effect of metapopulation is incurred by establishing difficulties and dispersal costs, which is important to the studies of reserve area and the minimum available metapopulation size. Third, we analyze the rescue effect that immigrants can reduce the extinction risk of the presented local population. Rescue effect can leads to the improvement of metapopulation sustainability and the decrease of fraction of empty patches. Fourth, the coexistence mechanism of two competing metapopulation is discussed, which suggests that competition-colonization trade off may be prevalent in competing systems. Finally, extinction debt ob tamed from coexistence mechanism is given, which depicts the lost of species richness in the future for the current habitat destruction. After theoretical discussion, we present two popular simulated approaches in metapopulations: probability transition model and stochastic process model.

为了能总观集合种群进展的全局并开展进一步的工作，首先对集合种群的已有概念、理论和模型做了全面的分析和总结；其次对集合种群的发展和概念进行了探讨，以集合种群模型的中心框架：Levins的斑块占据模型为基础，展开对其它原理、效应和机制的探讨；主要包括了Levins原理，即当生境进到破坏时，空斑块比例在集合种群灭绝前保持不变，然后还分析了Allee效应（集合种群的Allee效应主要是由于建群困难和扩散损失造成的）；第三，分析了援救效应：迁人个体可以降低斑块中现有局域种群的灭绝风险，援救效应会增强集合种群的生存力，使空斑块比例下降第四，探讨了两竞争集合种群的共存机制，即竞争－侵占妥协，其共存机制为空间生境中物种共存提供了有力的理论解释。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。