可降低的

Results:the preservativecan increase significantly the frequency of micronuclei which were significantly different in comparison with control group;it can not increase significantly the frequencies of chromosomal aber...

结果山梨酸钾可明显引起微核率的上升，与对照组差异显著(P05)或极显著(P01)，不引起染色体畸变率的明显上升。3种物质均可降低山梨酸钾诱发的微核率和染色体畸变率。

Result］ The new buds and petals of I.germanica was proper to be used as explant of tissue culture, with lower browning rate compared with other positions. The well situated tissue block of explant (3 mm×3 mm×3 mm) might reduce browning rate. Adding 0.1%Vc or 0.3% active carbon in medium had obvious effect on preventing tissue browning. The exogenous hormone 2 mg/L 6-BA was easy to lead to brownness turning, and 2 mg/L Kt and 2 mg/L NAA brought less effect to tissue browning. When using disinfectants of alcohol, its dipping time of 5～10 s for explant was the best, with the minimum browning rate. The culture under full illumination condition was liable to induce brownness turning, compared with other cultured conditions, the brownness turning could be restrained effectively by using imitating artificial climate condition for culture.

结果］ 鸢尾的新生芽和花瓣较适宜作组织培养的外植体，与其他部位相比褐变率较低；外植体组织块适中（3 mm×3 mm×3 mm）可降低褐变率；在培养基中加入0.1%Vc或0.3%活性炭对防止组织褐化效果明显；外源激素2 mg/L 6-BA易引发褐变，2 mg/L Kt和2 mg/L NAA对组织褐变影响不大；使用乙醇消毒剂时，对外植体浸泡时间以5～10 s为佳，褐变率最低；全光照条件培养容易诱发褐变，采用仿人工气候条件培养较其他条件培养可有效抑制褐变的发生。

Error causes are analyzed,and it is recommended that the 2′ could be used as the accuracy standard for civil user at present,when measuring zenith distance based on the direction of gravitational force line.

分析了误差产生的原因，建议以重力线作基准直接测定天体顶距时，近期民用设备可用2′作为标准，理论分析和实验表明，这样可降低仪器造价和对测者的要求，天文定位仍可获得满意的结果。

Vice-president Linda Thompson says Enea business alliance, The ConfD software of Tail-f can reduce the cost that the network configures, and but new service of real time deploy.

Enea企业联盟副总裁Linda Thompson说，Tail-f的ConfD软件可降低收集设置装备摆设的本钱，并可实时安排新办事。

Hopefully, giving a warning signal in advance, the result of this research could be a useful reference for evaluating environmental performance.

若能在空气品质出现异常现象的第一刻即预示警讯，将可降低其对人体健康可能造成之危害与损失，本研究之成果可作为对未来空气品质预警与评估的重要参考。

Hopefully, giving a warning signal in advance, the esult of this research could be a useful reference for evaluating environmental performance.

若能在空气品质出现异常现象的第一时刻即预示警讯，将可降低其可能造成之危害与损失，本研究之成果可作为建立未来空气品质预警模式的重要参考。

Minocycline represses diabetes-induced inflammatory cytokine production, reduces the release of cytotoxins from actiated microglia, and significantly reduces measurable caspase-3 actiity within the retina.

二甲胺四环素抑制糖尿病诱导的炎性细胞因子的产生，降低来自于活化的小神经胶质细胞的细胞因子的释放，同时显著降低视网膜内可检测的caspase-3的活性。

The results showed:(1)Nitrogen addition changed the soil physical and chemical properties, enhancing the content of NO3—- N available resources in the soil, increasing the plants height and cover, reducing the vegetation light penetration. With increasing of N addition, both the species richness and the diversity decrease sharply (P 0.001).(2)N addition increased the aboveground biomass significantly (P 0.05). With increasing of N addition, the aboveground biomass increased first then decreased, and the grasses biomass increased while the forbs and legumes biomass decreased.(3)There was a significant linear positive relationship between species richness and vegetation light penetration (P 0.05), and also between aboveground biomass and soil NO3—- N content (P 0.05). The relationship between aboveground biomass and species richness was negative upon enhanced N supply.

结果表明：（1）氮素添加提高了土壤中NO3—- N等可利用资源的含量，增加了植物群落植被的盖度，减小了植被的透光率，随着施氮量的增加群落中物种丰富度显著降低（P 0.001）；（2）氮素添加显著改变了植物群落地上生产力（P 0.05），随着施氮量的增加地上生产力呈现先增加后降低的变化趋势，各功能群中禾草生物量显著增加，而杂草和豆科生物量随施氮量增加逐渐减少；（3）物种多样性与植被透光率呈线性正相关（P 0.05）；地上生产力与土壤NO3—- N含量呈线性正相关（P 0.05）；随着施氮量的增加物种丰富度与生产力之间呈负相关关系。

The cartridge valve was be used in hydraulic system of high_speed shearing machine which can increase flows and shearing frequency.

在快速剪板机液压系统中，广泛采用插装阀，可加大供油量，提高剪板机的剪切频率，合理选择蓄能器，可降低油液压力的脉动。

Experiment finds that melamine formaldehyde resin could reduce the ramie fiber's water absorption.But it usually has low storage stability.For improving the storage stability,the property of Melamine formaldehyde resin is modified by polyvinyl alcohol.

实验发现，三聚氰胺甲醛树脂可降低苎麻纤维的吸水率，但三聚氰胺甲醛树脂存放稳定性差，加入聚乙烯醇进行改性可显著改善三聚氰胺甲醛树脂的贮存稳定性。

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％。