热处理对小麦品种发芽和种子活力的影响

以晋农207、农大2322个小麦品种为材料,测定了种子经高温高湿老化处理后的发芽指标、种子活力、电导率的变化。结果表明,高温((54±1)℃)、高湿(相对湿度100%)、密闭老化处理24h后,晋农207、农大232多数发芽指标下降,种子活力降低,而种子的相对电导率升高。2个小麦品种耐老化能力存在差异,晋农207比农大232相对耐高温老化。     

硫酸盐还原菌的筛选及生理特性研究

[目的]为使用硫酸盐还原菌处理废水提供理论依据。[方法]利用硫酸盐还原菌选择培养基从生产赤霉素产生的废水中筛选硫酸盐还原菌。依据不同菌株对硫酸根的降解效率,对筛选出的菌株进行复筛。选取对硫酸盐降解效果最好的菌株,研究温度、pH值、接种量等对其生理活性的影响。[结果]从供试废水中共筛选出8种硫酸盐还原菌,其对硫酸根的降解效率为26.22%～87.75%。经综合分析,确定8号菌株为优势菌;不同接种量对其硫酸盐降解效率影响不大;温度和pH值对硫酸盐还原菌的影响较大,最适温度和pH值分别为35℃和7.5。[结论]8号菌株为优势菌,在最适条件下其对污水中硫酸盐的去除率达80%以上。     

花生壳作为栽培基质的前期处理研究

本文采用的花生壳作为栽培基质原料,分别采用露天堆放,用水浸泡以及加入活性菌三种不同方式进行前期处理,对基质的腐熟过程中的各项理化指标进行监控,以研究不同的前期处理方式对基质腐熟程度以及理化性质的影响。结果表明,通过在花生壳加入VT活性菌可以大大加剧基质的腐熟程度,同时发酵升温快,温度高,C/N比下降显著,并能更好的固定基质中的养分。可以作为栽培基质前期比较理想的处理方式。     

潜水搅拌器在处理农村生活污水中的应用

对在污水处理中起主要作用的搅拌器进行了论述,通过对国内外搅拌器发展情况的比较,探讨了污水处理中搅拌器的主要作用。结合目前农村生活污水的水质及水量情况,对不同类型搅拌器在污水处理中的应用前景进行了论述。     

图书馆危机管理研究

分析了发生图书馆危机的8种类型和导致图书馆危机发生的因素,在此基础上提出了对图书馆危机进行防范、处置和恢复的措施。     

举升技术在油罐基础纠偏中的应用

储罐举升是针对油罐修理作业而新近开发研究成功的一项技术，它可以很好地解决油罐基础纠偏及其它常规修理技术无法解决的问题。通过对一个储罐基础纠偏实施的过程，介绍了该技术在储罐维修作业中的成功应用，并展示了举升技术在储罐维修领域的应用前景。     

Utility Analysis of Solid Waste Disposing Mechanism Under Market and Public Administration

Solid waste is one of the major pollution sources of environment.Currently,countries all over the world widely make use of market and public administration to solve the problem.Theories of environmental economics and legal science are fully applied to analyze the effects of these two measures,and conclusions can be made according to their respective traits: market has particular effect and function when dealing with problem of solid waste,but its imperfectness makes it necessary to introduce public administration.However, although it plays an important role in making up imperfectness of market,public administration still has inherent shortcomings and must be limited properly.     

Laboratory similar model test investigation of prestressed anchor rope strengthened slope fractured rock mass

Now in the highway construction of the mountain area, fractured rock mass slope always strengthened by the anchor rope. In order to investigate the strengthen effect of the slope fractured rock mass strengthened by the prestressed anchor rope, laboratory similar model test was designed and preceded. By the self-made facilities, a new method of modeling prestressed anchor rope was used in the test. Nylon ropes and the aluminum flakes were used to model the anchor rope and discrete rock mass joints. Gypsum based mix material was used to model rock. According to the real slope engineering site circumstances, six sorts of different disposed prestressed nylon rope strengthened model specimens and the specimens without prestressed nylon rope were made by the similar theory. With the test results, the strength and deformation properties of different model specimens were investigated. Comparison to different anchor effects of the different model specimens was made. The final analysis shows that in order to make full use of the anchor rope's strengthen ability, anchor rope should be disposed perpendicularly to the fracture structure rock mass's main joint direction and should be placed in the upper or top area of the fractured rock mass slope.     

Drainage disposal and reuse simulation in canal irrigated areas in Haryana

Nearly 60 per cent of the geographical area of Haryana state in Indian Union is underlain by saline ground water. The intra-basin transfer of surface water in the early sixties for irrigation has disturbed the hydrodynamic equilibrium resulting in waterlogging and salinization in large parts of the state. The existing inland drainage basin conditions did not permit the disposal of drainage effluent. The reuse system was therefore, integrated with the drainage system. A model RESBAL was coupled with the calibrated and validated on-farm water management model FAIDS and run for eight years to optimally design a series of connected reservoirs for the disposal of drainage effluent from an area provided with a subsurface drainage system. The possibility of the reuse of the disposed water for irrigation, aqua culture and salt harvesting was also studied comprehensively in order to maintain proper salt balance in the root zone.