钠复合肥促进荒漠植物梭梭、白刺和红砂生长并增强其抗旱性

采用荒漠土壤,以盆栽的方式,探讨了钠复合肥在梭梭、白刺和红砂等荒漠植物生长和抗旱性中的作用。正常浇水11～12周后停止浇水20～22天,与不施肥相比,施用钠复合肥使梭梭同化枝的面积、鲜重、干重和含水量分别显著增加了79%,148%,100%,25%,根的鲜重和干重分别显著增加了63%,45%;使白刺叶的面积、鲜重、干重和含水量分别显著增加了209%,318%,218%,34%,根的鲜重、干重和含水量分别显著增加了217%,138%,43%;使红砂叶的面积、鲜重、干重和含水量分别显著增加了763%,800%,667%,34%,根的鲜重和干重分别显著增加了719%,628%。施用钠复合肥显著增强了干旱胁迫下3种植物的渗透调节能力和活性氧清除能力,从而提高了这些植物的抗旱性并促进了其生长。     

频带色散法改善宽线宽激光受激布里渊散射效果的实验研究

利用频带色散法，让宽线宽，多横模电光调Q Cr:LiSAF激光输出脉经过多个色散棱镜，频带被色散后，再聚焦到装有CS2散射介质的池中，产生后向受激布里渊散射，脉宽的压缩率较大，约为5倍，与无色散棱镜情况相比，阈值能量有所降低，并能很有效改善抽运激光的光束质量。     

浅谈标识设计在城市环境设计中的重要性

标识系统虽然只是城市生活空间中一个小小的课题,然而,它却关系到人,关系到人的生理和心理需求,甚至可以关系到人的生命安危。在我们的生活环境中需要更为理想的标识指示系统。理想的环境,健康、智慧的思想和快乐的心情可以用艺术的手段来营造和表现。     

Super-Resolution Imaging on Microfluidic Super-Resolution Near-Field Structure

We present a new concept of the microfluidic super-resolution near-field structure (MSRENS) based on a microfluidic structure and a super-resolution near-field structure. The near-field distance control, “nano-probe” and scanning can be realized simultaneously using the MSRENS, which is similar to a near-field scanning optical microscope. The design and simulation results are presented. Numerical simulation has demonstrated that the MSRENS with spatial resolution beyond the diffraction limit could be applicable in chemistry, biologics, and many other fields.     

论高校教师的德性发展与德性境界

当前,教师发展理论的一个重要取向,就是从"徳性论"的视角出发来讨论教师职业道德修养,追求教师在教书育人的过程中回归徳性生命本身、回归生活世界。本文力图从"徳性论"的角度来探讨高校教师在教书育人中的、徳性发展和徳性境界。     

Sequential Detection of Digital Watermarking

The paper analyzed a new watermarking detection paradigm including double detection thresholds based on sequential hypothesis testing. A joint design of watermarking encoding and detection was proposed. The paradigm had good immunity to noisy signal attacks and high detection probability. Many experiments proved that the above algorithm can detect watermarks about 66% faster than popular detectors, which could have significant impact on many applications such as video watermarking detection and watermark-searching in a large database of digital contents.     

Numerical and experimental investigation of temperature effects on the surface plasmon resonance sensor

The effects of temperature on a surface plasmon studied experimentally and theoretically. SPR resonance （SPR） sensor in Kretschmann configuration are experiments are carried out over a temperature range of 278- 313 K in steps of 5 K. A detailed theoretical model is provided to analyze the variation of performance with varying temperature of the sensing environment. The temperature dependence of the properties of the metal, dielectric, and analyte are studied, respectively. The numerical results indicate that the predictions of the theoretical model are well consistent with the experiment data.     

中学生体育意识的培养途径

中学生终身体育锻炼能力和习惯的培养是中学体育的终极目标,而学生的体育意识是目标的基础.体育意识包括体育的学习意识、参与意识、健康意识、竞争意识及社会交往意识等.它具有一定的能动性,在一定条件下会对体育活动产生积极的影响.学生体育意识的能动性表现为能够对体育活动提出相应的目的、理论、计划和方法等,并立志于实现之,也就是说学生会以这些观念的东西作指导,通过体育实践活动来实现自己的目的,最终达到主     

基于独立成分分析和流形学习的眼电伪差去除

针对眼电伪差严重干扰脑电(EEG)信号的理解和分析的问题,提出了一种新的方法用于实时地去除脑电中的眼电伪差.该方法使用独立成分分析(ICA)分解EEG信号,提取独立成分的地形图和功率谱作为特征,并采用基于模板的Isomap算法降低特征的维数.将新的特征样本送到分类器中以识别眼电伪差独立分量,几个典型分类器的分类结果显示,基于模板的Isomap算法结合使用最近邻算法进行分类时,识别伪差的正确率最高.实验结果表明,提出的方法在有效去除眼电伪差的同时,很好地保留了大脑神经信号,也证明了新的Isomap算法用于眼电伪差特征的降维的有效性.