Results 71 to 80 of about 117,884 (172)
The research on nutrients release during the decomposition of Chaetomorpha sp. [PDF]
通过室内模拟,研究了不同环境条件下绿潮硬毛藻的分解速率,以及死亡藻体内营养盐的释放规律,以阐明硬毛藻大量衰亡对天鹅湖水质的潜在影响。结果显示,温度对硬毛藻分解速率的影响显著(P沉积物>营养盐水平;N释放为:沉积物>温度>营养盐水平。高温条件下,死亡藻..
孟祥森 +5 more
core +1 more source
ABSTRACT MCrAlX coatings are widely used as bond coats in thermal barrier coating systems to protect turbine blades from high‐temperature oxidation. However, their oxidation resistance is often restricted by uncontrolled microstructures, surface roughness, and aggregation of reactive elements (REs). In this study, high‐repetition‐rate femtosecond laser
Wei Qian +7 more
wiley +1 more source
利用有限元软件对40.5 kV瓷支柱绝缘子在温度剧变条件下的机械性能进行了仿真研究,包括温度剧变产生的温度应力以及对弯曲载荷和扭转载荷的影响,温度范围为-40~+80℃(初始温度为20℃)。研究发现,在低温或者高温条件下,瓷支柱绝缘子不同介质的连接位置均会出现明显的应力集中现象;同时,在施加弯曲载荷时,高温会使瓷支柱绝缘子承受更大的应力,而在低温时应力会随温度的降低而减小;而在施加扭转载荷时,瓷柱的不同位置在不同温度下所承受的应力有所不同,上瓷根所受应力随温度升高而减小,下瓷根所受应力随温度升高而升高 ...
王博 +6 more
doaj
Response of stable states of simple marine plankton ecosystems to warming [PDF]
温度是影响海洋浮游生态系统结构和功能的关键环境因子。从上个世纪初以来,受到人类排放温室气体的影响,全球海洋平均温度明显升高。但温度影响浮游生态系统变化和浮游生物生物量变动的机制还不明确。本文采用理论模型与实验生态相结合的方法探究温度对简单浮游生态系统稳态的影响,并一同考虑营养盐的输入,得到如下主要结果: 1.建立描绘以亚心形扁藻(PlatymonasSubcordiformis,绿藻)为被捕食者、海洋尖尾藻(Oxyrrhismarina,甲藻 ...
李奕慧
core
The Microstructure Evolution and Mechanical Properties of (FeCoCrNi)100‐x(AlCu)x High‐Entropy Alloys
ABSTRACT This study systematically investigates the effects of AlCu addition on the microstructural evolution and mechanical properties of (FeCoCrNi)100‐x(AlCu)x (x = 0, 5, 10, 15, 20; at%) high‐entropy alloys (HEAs). The results reveal that the microstructure evolves from coarse equiaxed to refined equiaxed, dendritic, and ultimately dual‐phase ...
Shunfu Xie +7 more
wiley +1 more source
[Correlation between nasal mucosal temperature change and nasal airflow perception]. [PDF]
Gao X, Wu J, Wei H, Xu W, Han D.
europepmc +1 more source
Development of a Market for New Products in the field of Cryogenic Engineering [PDF]
小西善雄教授古稀記念特
Nakahara Sumio, 中原 住雄
core +1 more source
ABSTRACT With the rapid growth demand for advanced integrated electronic systems, lightweight flexible electromagnetic interference (EMI) shielding films integrated with functional properties, such as excellent mechanical properties and self‐healing capability, are a research focus in high‐tech functional materials. Herein, a sandwich‐structured aramid
Dan Guo +9 more
wiley +1 more source
摘要: 胰岛素泵恒温袋的设计胰岛素泵恒温袋根据恒温原理设计,恒温是指使用自动控制方法保持温度值的恒定不变,温度值不受时间的影响,初始温度与任何一时刻温度相近似。胰岛素泵恒温袋包括袋盖、袋体和粘笳固定带3部分。
戴莉敏, 方英
doaj
MOV静态下的功率损耗是影响其热稳定的重要因素,在考虑了老化因素对MOV功率损耗的影响后提出了老化程度变量并将其量化的新方法,并利用自适应模糊推理系统(ANFIS)将电压(V)、温度(T)、老化程度(AD)作为网络的输入,实验测量数据作为训练样本对MOV的功率损耗进行评估。研究表明:ANFIS可有效评估MOV的功率损耗,其最大相对误差为8.
牛春霞, 于忠江, 杨仲江
doaj

