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Under illumination, methyl viologen was reduced by RS601 chromatophores in the presence of DCPIPH〓 as the electron donor, setting up a standard noncyclic electron transport.

在光照和以DCPIPH〓为电子供体条件下，RS601载色体能够串联呼吸电子传递链而耗氧或还原MV而构成DCPIPH〓→MV的非循环电子传递链。

The radial force balance equation for the self-electric field and self- magnetic field of the relativistic electron beam is used to calculate the angular rotation frequency of the relativistic electron beam propagating through the cylindrical wave guide filled with nonneutral plasmas.

首先利用相对论电子束的自电场与自磁场所产生的径向力平衡方程，计算出相对论电子束在稳态非中性等离子体填充的柱状波导中传输的转动频率。

Single-crystalline cerium orthovanadate (CeVO4) nanorods are synthesized successfully by Na2EDTA-assisted hydrothermal method. The products are characterized using X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy and superconducting quantum interference device.

以Na2EDTA为模板导向剂，利用水热法成功合成了单晶CeVO4纳米棒，使用X射线衍射仪、透射电镜、高分辨透射电镜和超导量子磁强计等对产物的结构和磁学性能进行了表征。

The microstructure evolution and composition distribution of the 7A55 cast and homogenized alloy were studied by optical microscopy, scanning electron microcopy, energy dispersive spectrometer, transmission electron microscopy and X-ray diffractometry. The homogenizing and overburnt temperatures of the alloy were determined. Meanwhile, the diffusion kinetics of the alloy elements during homogenizing treatment was investigated and the homogenizing kinetic equation was deduced according to Fick's First Law of diffusion. The diffusion of alloy elements, precipitation of Al3Zr particles and the conglomeration and globe of the insoluble phases were explained by the equation during homogenization.

摘 要：采用光学显微镜、扫描电镜、能谱分析、透射电镜和X射线衍射分析等研究了7A55合金铸态与均匀化显微组织演化与成分分布，确定了该合金的均匀化处理温度与过烧温度，研究了铸锭均匀化动力学过程，利用菲克定理导出了均匀化动力学方程，利用动力学方程对均匀化过程中合金元素的扩散、 Al3Zr的析出、难熔相的聚集和球化现象进行了解释。

In the B molecule, the two diethylamino groups at each end of the molecule are good electron donors and the oxadiazole group at the middle of the molecule is an electron acceptor.

另外，我们还合成了一种蒽基吡唑啉类荧光分子C.C分子的单光子吸收光谱包括两块吡唑啉衍生物的吸收和蒽环的吸收。

But no electron transfer was found from the excited porphyrin moiety to the oxadiazole moiety. Moreover, cyclic voltammetric studies of the dyads 5a , 3b and 4b further indicated that electron transfer from the oxadiazole moiety to the porphyrin moiety was possible.

nm激发下不存在分子内卟啉基团向噁二唑基团的电子回传竞争；电化学性能测定进一步表明从噁二唑基团向卟啉基团的电子传递是可能的。

Blue-light-emitting polyfluorene derivatives with bulky bipolar pendent groups at C-9 position has been synthesized. The combination of electron-deficient oxadiazole and electron-rich triphenylamine affords a highly efficient light-emitting material by improving charge injection and transport in electroluminescent device.

具有刚硬双极性侧链的高效率蓝光聚茀高分子材料已成功被合成，藉由在fluorene的9号碳位置导入了有利於传输电子的oxdiazole片段与利於传输电洞的triphenylamine片段所结合的TPAOXD，不仅增加电荷注入与传输能力，同时提高材料的热稳定性质(Tg： 186 oC)。

The properties of single chain and pauci chain polystyrene microspheres and recent results on the electron microscopy and selected area electron diffraction of single chain monocrystals of polyethylene oxide, isotactic polystyrene, cis1,4 polybutadiene and gutta percha are presented and discussed.

介绍和讨论了单链和寡链聚苯乙烯玻璃体微球的性质以及聚环氧乙烷、同立构聚苯乙烯、－，4－丁二稀、－，4－异戊二烯单链单晶电子显微镜和选区电子衍射观察的最新结果。

A DC high brigytness laser driven by photoemissive electron gun is being developed at Peking University,in order to produce 50～100ps electron bunches of high quality.

采用激光驱动光阴级和100kV直流加速间隙可产生宽度为50～100ps的高亮度脉冲电子束。

The study on the photoinhibiton of Pistachio shows: the exposure of Pistacia vera seedlings to high irradiance induced lowering of apparent quantum yield , maximal fluorescence , minimal fluorescence , variable fluorescence , photochemical efficiency of PS Ⅱ, and photochemical quenching , but raising the Non-photochemical quenching , this indicates that high irradiance reduces the quantities of oxidized Q〓, which depresses the ability of electron transport from Q〓 to Q〓, and lowers the electron transport rate and the photosynthesis rate.

对&光抑制&研究表明，强光照射后，叶片表观量子效率、最大荧光、初始荧光、可变荧光、光化学效率、和光化学猝灭系数下降，而qN升高，说明强光处理降低了Q〓的氧化态数量，使Q〓→Q〓传递电子的能力下降，进而导致了电子传递速率和光合速率的下降。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。