查询词典 on the decrease

By carrying out ~1H spin-diffusion experiments,the domain sizes of DNA in the complexes were determined.The domain size of DNA is found to decrease greatly when the N/P ratio changes from 0.5 to 3 and changes only slightly with further increase of the N/P ratio.After making a thorough analysis and discussion on drug control release and gene delivery systems with general NMR techniques,we presents a method of 1D PFG NMR technique to realize quick observation on the Mw change of polymer during its degradation process.Moreover,according to the inverse Laplace transformation theory and based on a function of diffusivity distribution of polymer in solution,2D PFG NMR technique is developed to measure the Mw distribution of polymer.Combined with Monte Carlo simulation,the degradation mechanism can be figured out.

从发展新的核磁共振方法，拓展核磁技术应用范围的角度来看，本文首次提出了采用一维脉冲梯度场技术快速测量降解过程中聚合物的分子量变化的新方法；并首次将Monte Carlo模拟与PFG实验结果进行了关联分析，从而不仅可以实时观测体系分子量的变化，而且可以对体系的降解机理进行深入分析；首次将延伸型指数函数引入对自扩散曲线的拟合，并通过反拉普拉斯变换，建立了一种实时测量聚合物体系分子量分布的新方法；首次将固体核磁共振的研究方法，引入聚合物/DNA复合物体系的研究。

The testing results suggests that the increase of H2S concentration will raise the brittleness coefficient, leading to the decrease of corrosion resistance for either X70 base metals or welding joints. Meanwhile, the results reveals that effect of H2S concentration on X70 base metals and welding joints is different: the influence of H2S concentration on welding joints'SSCC is bigger than on base metals'SSCC.

揭示了随着硫化氢浓度的增加，国产X70管线钢及其焊接接头的脆性系数增加，抗腐蚀能力减弱；硫化氢浓度对国产X70管线钢母材和焊缝的SSCC性能有着不同程度的影响：在相同的试验条件下，焊缝的脆性系数显著大于母材的脆性系数，即焊缝较母材的SSCC敏感性大。

Result］ The extracted liquid from D. stramonium could decrease the germination rates of 4 vegetables and the seed germination of tomato and pepper. After treatment by 0.2, 0.4 g/ml extracted liquid , the seed germination of tomato and pepper were decreased by 10.2％, 9.4％ and 46.7％, 34.7％ than that of CK resp. The extracted liquid at 0.2 g/ml could inhibit the growth of vegetable root, but had some promotion on growth of vegetable stem. The extracted liquid at 0.4 g/ml had the strong inhibition on the growth of vegetable root, but its inhibition on growth of vegetable stem was greatly variable in different species.

结果］曼陀罗浸提液可降低4种蔬菜种子的发芽速率，降低番茄和辣椒种子的发芽率；0.2、0.4 g/ml曼陀罗浸提液处理后，番茄和辣椒种子的发芽率分别比对照降低了10.2％、9.4％和46.7％、34.7％。0.2 g/ml曼陀罗浸提液抑制蔬菜根的生长，而对茎的生长却表现出促进作用；0.4 g/ml曼陀罗浸提液对蔬菜根的生长有很强的抑制作用，对茎段生长的抑制作用因物种不同而有很大差异。

The results showed that loading Ag^＋, Ni^2＋, Cu^2＋ or Zn^2＋ ion on the activated carbon obviously improved its adsorption of benzothiophene, while loading Fe^3＋ or Co^3＋ ion on the activated carbon caused a decrease in its adsorption of benzothiophene in comparison with the original unloaded activated carbon, which was due to the variation of the nature of soft and hard acid on the surface of the activated carbon.

采用密度泛函数理论法计算结果表明，苯并噻吩的电负性χ为2.638，属软碱类物质；由于Ag^＋为软酸，活性炭负载Ag^＋离子，增加了其局部表面的软酸，从而增强了对苯并噻吩硫化物的吸附；由于Ni^2＋、Cu^2＋和Zn^2＋离子属交界酸，负载Ni^2＋、Cu^2＋、Zn^2＋离子增加了活性炭表面的交界酸，也在一定程度上提高了其表面对苯并噻吩硫化物的吸附；当活性炭表面负载了硬酸性Fe^3＋或Co^3＋离子，其局部表面硬酸增大从而降低了其对苯并噻吩的吸附。

By flue gas of 2000m〓/h, some normal wastes (seawater, fly ash of power plant, basic waste water, etc) and lime are used on the research of dry, semi-dry, and wet FGD and its corresponding pressure and temperature decrease on stuffing tower, the effect of Ca/S ratio, inlet SO2 concentration, inlet flue gas temperature, and L/G ratio on desulfuration efficiency is analyzed, the instrument of dehumidify was studied by experiment and appropriate instrument of dehumidify was chosen.

在浙大热能所大约相当于1吨／小时出力的锅炉的尾部烟道上的多功能传热除尘脱硫一体化试验研究装置上，利用海水、电厂灰、碱性废水和石灰开展了半工业性的干法、半干法、湿法烟气脱硫研究，分析了Ca／S比、进口SO〓浓度、进口烟温、喷水量等因素对脱硫效率的影响，并探讨了湿法烟气脱硫中的烟温问题，对湿法烟气脱硫反应塔的阻力特性和除湿装置进行了试验研究，选取了合适的除湿元件。

At last, the effects of JA on the bile salt resistance of Bifidobacteria were studied.The test proved that:Deoxycholic acid Na-Salt had intensely toxical action on Blm and Bbm;Adding glucose and fructose in media could decrease the lexical action on Bbm.but inulinand JAP had not apparent effect.

初步研究了菊芋对双歧杆菌的胆盐耐受性的影响，实验表明，脱氧胆酸钠盐对Blm和Bbm有一定毒性作用；在培养基中补充一定量的葡萄糖和果糖可以改善Bbm的胆盐耐受性，而菊糖和菊芋粉对提高Blm和Bbm的胆盐耐受性没有明显作用。

Later on, hydration of fly ash, slag and gypsum produces gel material enwrapping the surface of ettringite, which increases the strength of H50-6s hardened paste on the one hand, and hold back ettringite weathering on the other hand. So ettringite decomposition is effectively controlled so as to avoid strength decrease of the hardened paste.

这样，凝胶物质一方面使硬化浆体的强度缓慢增加，另一方面阻缓了大气对钙矾石的侵蚀，有效抑制了由于钙矾石的分解而导致硬化浆体的强度倒缩。

The plasma ignition threshold of metal is got through experimental and numerical study. The vapour and plasma ignition times of the target are got based on the equation of heat conduction and cascade model. We suppose that the plasma is ignited when generations of new electrons are born in vapour generation time. The influence of temperature on the thermodynamics and optics parameters of material also have been considered in the model. The resulting theory has good agreement with the experiment and overseas report. A blade method to measure the laser spot is given in this paper with validation and error analysis. The plasma threshold of metals in atmosphere and water ambients both are diagnosed with the light deflection and piezoelectric transducer. A Q-switched pulsed Nd:YAG laser operating at infrared (1064nm), visible(532nm) and ultraviolet (355nm) wavelengths has been used. Al、Fe、Cu are used as targets and get a similar results with both method. Theoretical and experimental analyses are applied on the influence of wavelength on the threshold have been done, both of which have shown that the plasma threshold of metals decrease as the laser wavelength increases; The plasma threshold of metals are higher in water than in air and the pressure of the shock wave in water is five times higher than in air .

从热传导方程和雪崩电离机制出发，假设当电子增值210倍时，考虑了温度对材料热力学和光学参数的影响时，得到了气化和等离子体点燃的时间，利用该模型进行计算得到的结果与国内外报道及自行通过实验测得的阈值基本一致；提出了利用刀刃法测量激光光斑面积的方法，并通过实验进行了验证和误差分析；利用光偏转装置和压电换能器分别对空气和水中金属等离子体点燃阈值进行了实验诊断，激光器均为调Q－YAG激光器（波长1064nm，532nm，355nm，脉宽10ns），靶材分别为Al、Fe和Cu，两种测试方法得到的等离子体点燃阈值基本一致；本文从实验和理论计算两个方面讨论了波长对等离子体点燃阈值的影响，均得到了等离子体点燃阈值随著波长的增加而减小的结论；对空气中和水中不同环境下金属等离子体的点燃阈值进行了比较研究，得到了金属在水中的等离子体点燃阈值比空气中的大，且水中产生的冲击波的压强是空气中的5倍左右的结论。

Laying the baffle on the top of spent fuel zone can suppress the impact of the recirculating flow on the upper plenum and decrease the change of the temperature on the bypass of core.

加挡板可阻挡上部大回流区对堆芯旁通区的影响，降低堆芯旁通区流体温度的变化

Cimetidine at routine doses can decrease SOBP and SOCA, showing inhibitory effect on the motility of SO, while famotidine had no obvious effect on SO motility.

常规剂量的西咪替丁可引起SOBP和SOCA降低，对SO运动具抑制作用，常规剂量的法莫替丁对SO压力无明显影响。

In this paper, the requirement analysis, design and implementation of the system are introduced in detail.

此论文详细介绍了系统的需求分析，系统设计和具体实现。

In the context of economic globalization is increasingly deepening, China's economy can not be spared.

在经济全球化日益加深的背景下，中国经济不可能做到独善其身。