一个1+1对转涡轮的初步设计

本文初步尝试１＋１对转涡轮设计,试图发现区别于常规涡轮设计存在的问题,探索对转涡轮设计体系的组成和应用策略,对１＋１对转涡轮给出初步评价。     

分子在真空紫外区的相干辐射光谱及转动温度的测量

本文报道的是作者利用分子作为介质,通过非线性光学过程（四波和频,三次谐波）在真空紫外波段产生宽带可调谐相干光的理论和实验研究及其结果,实验产生的宽波段可调谐激光输出为建成完备的小型真空紫外激光光源奠定了基础。此文还报道了作者用该光源在XUV波希成功测量分子转动温度的方法和结果。     

动脉中脉搏波传播分析

将血管简化为弹性管,并考虑组织对血管壁的约束,利用力学方法建立血液流过血管的力学模型．通过理论分析对脉搏波在血管中的传播规律进行研究,同时分析了血液粘性、血管壁弹性模量、管径对波的传播的影响．通过对考虑血液粘性和不考虑血液粘性的结果比较,发现血液的粘性对脉搏波的传播的影响不能忽略,并且当弹性模量增大时,传播速度增大,血流的压力值增高;血管直径减小时,血流压力也增高,脉搏波速度增大．理论分析得到的结果也有助于利用脉搏波的信息来分析和辅助诊断一些人体疾病的病因．     

钕对缺钙油菜膜损伤和过氧化进程的影响

通过在缺钙条件下对油菜进行水培 ,探讨了Nd对缺钙油菜膜损伤和过氧化进程的影响。3 μmol·L- 1硝酸钕可降低根质膜相对透性和叶片中膜脂过氧化作用产物丙二醛含量 ,提高过氧化氢酶 ,过氧化物酶和超氧化物歧化酶的活性。Nd可减轻油菜缺Ca症状 ,抑制膜的过氧化进程 ,完全营养液中加入硝酸钕也有类似效果。     

Generation of high-energy dual-wavelength domain wall pulse with low repetition rate in an HNLF-based fiber ring laser

The generation of high-energy dual-wavelength domain wall pulse with a low repetition rate is demonstrated in a highly nonlinear fiber （HNLF）-based fiber ring laser. By introducing the intracavity birefringence-induced spectral filtering effect, the dual-wavelength lasing operation can be achieved. In order to enhance the cross coupling effect between the two lasing beams for domain wall pulse formation, a 215-m HNLF is incorporated into the laser cavity. Experimentally, it is found that the dual-wavelength domain wall pulse with a repetition rate of 77.67 kHz could be efficiently obtained through simply rotating the polarization controller （PC）. At a maximum pump power of 322 mW, the 655-nJ single pulse energy in cavity is obtained. The proposed configuration provides a simpler and more efficient way to generate high energy pulse with a low repetition rate.     

溶液酸碱性对低聚苯亚乙炔基分子结电输运性质的影响

结合密度泛函理论和非平衡格林函数方法计算了溶液酸碱性对低聚苯亚乙炔基分子结电输运性质的影响,此低聚苯亚乙炔基分子中两个不同位置的H原子被氨基和羧基取代.通过质子化和去质子化模拟酸性溶液和碱性溶液对分子结构的影响.计算结果表明:中性环境下分子器件具有良好的导电性和微弱的整流效应;碱性溶液中羧基去质子化后,分子器件电流值增长近一倍,但整流效应变化不明显;酸性溶液中氨基质子化后,分子器件正向偏压导电性能略微降低,但整流方向发生明显反转,且与中性环境下的情况相比,整流比提高了近三倍.提出了一种利用化学手段控制分子结导电能力和整流性能的方法.     

Eu(TTFA)3掺杂环氧基光刻胶薄膜的强烈红色荧光

合成了稀土配合物Eu(TTFA)3（TTFA, 2 thenoyltrifluoroacetone）掺杂的环氧基紫外负性光刻胶薄膜,采用荧光分光光度计对其光致发光特性进行了系统表征.荧光光谱分析表明,Eu(TTFA)3掺杂的光刻胶薄膜具有很宽的激发谱带（200 ~ 400 nm）,且在长波紫外区表现为强激发,说明有机配体TTFA-与中心离子之间存在着比电荷迁移带更有效的能量传递.配体TTFA-的三重激发态和Eu3+的激发态能级匹配较好,能很好地敏化Eu3+而发出明亮的红光,是获得Eu3+红色荧光发射的优良配体,认证了有机配体与稀土离子之间产生有效能量传递的前提是存在“天线效应”.     

进出口贸易对我国经济增长关系的变因分析

本采用计量研究的方法，从数量分析的角度，对进出口与经济增长的相互关系进行回归分析，并对模型结果作了一些理论上的探讨。     

X-shape oligo（thiophene）s as donor materials for vacuum-deposited organic photovoltaic cells

The films of two x-shape oligo（thiophene）s, 3, 4-dibithienyl-2, 5-dithienylthiophene （7T） and 2, 5-dibithienyl-3, 4- ditrithienylthiophene （11T）, which are prepared by vacuum evaporation, have been investigated as novel electron donor layers in two-layer photovoltaic cells. UV-Vis absorptions show red-shifted and broadened absorptions of the vacuumevaporated films as compared with those of the corresponding solutions and spin-coating films, which is beneficial for photovoltaic properties. X-ray diffraction （XRD） and differential scanning calorimetry （DSC） measurements show that the vacuum-evaporated films are almost amorphous. Two-layer photovoltaic cells have been realized by the thermal evaporation of 7T and llT as donors and N, N′-bis（1-ethylpropyl）-3, 4：9,10-perylene bis（tetracarboxyl diimide） （EP- PTC） as an acceptor. An energy conversion efficiency （ECE） of 0.18% of the cell based on 7T with an irradiation of white light at 100 mw/cm^2 has been demonstrated by the measurements of current （I）- voltage （V） curves of the cells to be higher than the ECE of the reference system based on donor dihexylterthienyl （H3T） that is linear and without α, β linkage.