氢

The drift and jitter of the output pulse are important parameters of the stability.The experiments and analyses based on homemade VE-4073 thyratron show that the combined effects of DC heating thyratron and two-pulse triggering technique can greatly reduce the drift and jitter of the pulser output.

利用国产VE-4073氢闸管进行了分析和实验研究，通过采用直流加热氢闸管灯丝和氢储存器，以及精确、稳定的双脉冲触发技术，大幅减小了开关脉冲发生器触发延时的抖动和漂移，48 h内开关脉冲发生器输出漂移仅6.1 ns。

In this thesis, the heterojunction with intrinsic hydrogenated amorphous silicon thin layer ( heterojunction with intrinsic thin layer: HIT) solar cells are investigated. The solar cell structure of p/i/n are fabricated. The substrate is a typical 4-inch n-type wafer with (100) crystal orientation, 1~10 ohm-cm and about 525 μm thickness. The p and i a-Si:H layers are deposited by a 13.56 MHz plasma enhanced chemical vapor deposition. The i a-Si:H layers are especially deposited by pulse-wave modulation plasma technique with fixed plasma turn-off time toff = 10 ms and changed plasma turn-on time ton= 10 to 40 ms to selectively control the different silicon to hydrogen bonding configurations. The effect of various Si:H bonds on the performance of HIT solar cells are explored.

中文摘要本论文针对异质接面薄本质层(heterojunction with intrinsic thin layer： HIT)太阳电池进行研究，采用一般典型四英吋晶向为(100，厚度约为525 μm，电阻率约为 1~10 ohm-cmn型矽晶圆为基板，制作p/i/n太阳电池，p及i层薄膜以13.56 MHz电浆加强化学气相沈积，i层并采用脉波调变电浆技术，在固定电浆关闭时间toff = 10 ms及改变电浆开启时间由ton = 10 ms 至40 ms条件下制作具有不同矽氢键结微结构的氢化非晶矽薄膜以探讨不同矽氢键结对太阳电池性能的影响。

This composite material could storage 2.35wt% hydrogen which was bigger than the undecorated Palladium hydrogen storage material 1.22wt% at room temperature and 7MPa.

同时，采用PCT储氢测试仪测得其在室温、7MPa下的储氢量为2.35wt％，大于未经钯修饰的坡缕石的储氢量(1.1wt％)。

The content Of isoalkanes decreased when NiSO_4 was loaded, for supported Ni oxidecould promote the dehydrogenation of the precursors of aromatics by unimolecular reactionwhich did not generate negative hydrogen ions, and the carbonium ions could not obtainsufficient negative hydrogen ions to promote hydrogen transfer reaction.

负载氧化镍以后异构烷烃含量下降，氧化镍可以通过脱氢促进芳构化反应，使正碳离子得不到足够的负氢离子饱和使氢转移反应得到抑制。

The results show that: The contents of H_2 and CO_2 are 10%～20%, 75%～90% and no CH_4 respectively. Ethanol, acetate, propionate and butyrate are detected, and the trace of valerianate is not found in the liquid of fermentation.

在本实验的发酵条件和所取淤泥发酵产氢时，pH值为5.5时的发酵产氢要优于pH为4.5时的发酵产氢能力；55℃的发酵温度要优于35℃的发酵温度；1：1的底物接种物比例发酵要优于3：7的底物接种物比例发酵。

The accident of a tube of a high alcohol hydrogenation reactor in chemical plant was analyzed,and the reason of the accident and design a new structure of the reactor tube was found out The usage in a chemical plant shows that the design of the new structure is vali

对化工厂原有高压醇加氢反应管经常出现的故障进行了分析，找出引起故障的原因，设计出一种新型的高压醇加氢反应管，经化工厂使用，证明这种新型的高压醇加氢反应管是可行

Result indicated the increase of destroyed zoogloea and enhancement of activities of enzymes of nitrogen-fixing, de-hydrogen as well as α-amylase, leading to a decrease of period of hydrogen-producing and an increase of rate of hydrogen-producing.

与对照组相比，可溶解性化学需氧量增加了4.5倍，溶出率提高了350.00%；COD降解率提高了12%，是自然降解率的1.19倍，产氢周期缩短至6.5d，最大产氢率为67.91mL/g，平均产氢率提高到21.6mL/g，是对照组的3.9倍，效果较好。

In order to obtain highly efficient H_2-producing aciduric anaerobic strain, a hydrogen producing strain H-8 was irradiated by microwave, the microwave mutagenesis parameters were optimized, and the genetic stability, hydrogen-producing potential and acid resistance of the mutant were investigated.

为获得厌氧产氢菌的高效突变株，以产氢菌H-8为原始菌株进行微波诱变处理，对微波诱变参数进行了优化，考察了突变株的遗传稳定性、产氢特性及耐酸性。

Toxicity of four compounds identified as 6a, 12a-dehydro-α-toxicarol, 6a, 12a-dehydro-deguelin,-tephrosin and-6-hydroxy-6a, 12a-dehydro-toxicarol obtained from the leaves and stem of Amorpha Fruticosa and their mixture in a natural ratio 1:2.54:4.18:2.54 were tested against Trematodes grandis.

通过对紫穗槐叶和茎成分分离，得到6a，12a-脱氢－α-灰叶酚、6a，12a-脱氢鱼藤素、灰叶素、6-羟基－6a，12a-脱氢灰叶酚4个化合物。

The SEM experiments indicate that the coating crystalline present an ordered arrangement and an arborous appearance. All crystals are larger than that before the addition of organic polymer. The length of some crystal branches are larger than 100 micron. It is supposed that the existence of arborous crystals is due to the incorperation of organic polymer into DCPD coating.

电镜实验表明，电解液中加入有机高聚物后，陶瓷沉积层呈有序排列，晶体呈树枝状结构，膜层中晶体颗粒度增大，有的分枝长达100多微米，磷酸氢钙膜层中出现的树枝状磷酸氢钙晶体是由于有机高聚物掺杂进入磷酸氢钙陶瓷膜层。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。