旋转射流钻头的叶轮设计

旋转射流钻头是一种新型高效水力破岩钻头，作为旋流发生器的叶轮，其性能直接影响破岩效果．文中分析了旋转射流钻头的内流场，在此基础上提出叶轮设计目标和要求，证明了对圆柱形叶轮，不存在既无径向流又等旋度的叶轮参数．同时，运用翼型绕流理论，推导出有关叶轮长度、半径、叶片安放角等参数与射流喷嘴直径、扩散角、旋度之间的关系式，分析并确定了叶片工作性能与来流压力的关系式．运用实例说明了这些公式的使用以及叶轮段水头损失的估算方法，可为叶轮的设计提供理论指导．     

静电场对水驱油效率影响的微观实验研究

在实验室条件下，采用微观透明孔隙模型，从微观的角度研究了和电场对水驱油效率的影响，实验结果表明，静电场作用可以提高水驱油效率和采收率，实验中发现了桥接现象，这是静电场提高采收率的机理之一．     

用于电镀材料的丙烯酸／环氧／氨基树脂水性罩光涂料的研究

采用共聚工艺制备丙烯酸／环氧／氨基树脂水性罩光涂料，所合成的涂为的贮存稳定性、耐盐雾性、光泽度与丰满度等性能无有显著提高，是适用于电冰箱蒸发必器电镀材料使用的一种高装饰、高性能的水性罩光涂料。     

柔性交联聚丙烯酸钠的合成及其性能研究

ＰＡＭＮ保水剂的反相聚合作用原理进行论证，指出了ＰＡＭＮ聚合物与水分子作用的深化物理方法，实验中对Ｐ．Ｊ．Ｆｌｏｒｙ理论中电解离公式反常现象作出了解释。对ＰＡＭＮ保水剂在农，林水方面的应用前景作了阐述。     

光照、温度和水分对野生荞麦光合速率的影响

通过野生荞麦和栽培苦荞麦叶片光合速率对光照、温度、土壤含水量变化的反应,表明野生荞麦与栽培苦荞麦对光照、温度和水分变化的反应差异明显,野生荞麦叶片在利用光能和叶片光合速率的温度适宜范围,以及对水分胁迫适应力等方面都强于栽培苦荞麦,表现出较高的光合生产能力和较好的抗逆性.     

《水浒传》主题正气论

《水浒传》通过歌颂英雄人物的反抗斗争,揭露封建社会的黑暗腐朽和贪官集团的种种罪恶,呼唤政治清明和社会公正,梦想实现与儒家传统思想相一致的理想社会。无论是对人物的塑造、对事件的描写,还是字里行间流露的感情,《水浒传》都弘扬了正气,所以,其主题就是“弘扬正气”。无斋主人的“梁山人物黑帮论”是站不住脚的。     

《水浒传》之反贪论

《水浒传》中的梁山英雄在官逼民反的情况下上演了一场忠奸之争 ,而斗争实质上表现为在替天行道的旗帜下的反贪运动。梁山好汉有力地打击了一批贪官污吏 ,奸佞小人。一场卓有成效的反贪运动却因招安以失败告终 ,显示了深刻的社会体制原因     

Transition-metal-doped Fe2O3 nanoparticles for oxygen evolution reaction

Hematite(α-Fe_2O_3)has been extensively studied as a promising photocatalyst,with the capacity to split water under visible light.To tune its electronic structure and improve the performance for oxygen evolution reaction(OER),high-quality single crystals ofα-Fe_2O_3nanoparticles were synthesized and doped by various transition metals(M=V,Cr,Mn,Zn,Co,Ni,Cu,Nb,Mo,Ti)by a molten-salt flux method.Optical,electronic and catalytic properties of transition-metal-dopedα-Fe_2O_3(TM-dopedα-Fe_2O_3)have been systematically investigated.Cobalt has been identified as the best dopant forα-Fe_2O_3,reducing the OER overpotential by 0.16 V with respect to the undoped.     

WO3 nanoflakes decorated with CuO clusters for enhanced photoelectrochemical water splitting

The low quantum efficiency arising from poor charges transfer and insufficient light absorption is one of the critical challenges toward achieving highly efficient water splitting in photoelectrochemical cells. Three dimensions(3D) structures and heterojunctions have received intensive research interests recent years due to their excellent ability to separate photo-generated charges as well as the enhanced light harvesting property. Herein,3 D Cu O/WO_3 structure was fabricated through a facile solvothermal method followed by chemical bath deposition. The loading of Cu O clusters on WO_3 nanoflake arrays results in a much improved photocurrent density compared with that of pristine WO_3 nanoflake arrays, which reaches 1.8 m A/cm2 at 1.23 V vs. the reversible hydrogen electrode. The electrochemical impedance spectroscopy measurement demonstrates that the improved performance of Cu O/WO_3 electrode is attributed to the accelerated charge transfer kinetics as a result of the desirable band alignment in Cu O/WO_3 heterojunction. This work demonstrates a facile strategy to construct superior WO_3 electrode, which will ultimately allow for efficient storage of solar energy into hydrogen.     

铝制沐浴水热回收器的初步设计

对一种新型的铝制沐浴水热回收器进行初步设计。该沐浴水热回收器具有成本低,回收效率高等优点。介绍其工作原理,并以某三口之家为例,计算该热回收器的节能效益。结合沐浴水余热使用情况不合理的现状,讨论其发展前景。