Because d . salina can grow in high salinity environments , where the other organisms survive hardly , large - scale culture of d . salina do not need expensively fermentive or other special equipments , suggesting that d . salina is a favorable host for producing pharmaceutical proteins 由于杜氏盐藻可在高渗盐溶液中生长，这是许多其它生物难以生存的环境，故其大规模培养不需昂贵的发酵罐或其他培养装置，可以直接采用开放式培养，大大降低生产成本。
With the very low water to cement ratio , rpc has ultra - high strength high ductility and low permeability . in this paper , the compressive strength of rpc can reach to a high point with the number approximately 135mpa . as illustrated from the study results , we can approve some fundamental conclusions : there are big effects on rpc with deferent kinds and properties of raw materials and deferent curing conditions ; stress - strain curve shows the process of destroy with rpc samples ; x - ray diffraction analysis indicates that heat treatment at temperatures 90 accelerate the hydration of rpc sharply , therefore , mechanical and microstructural properties of rpc are highly dependent on heat treatment ; it is believed that rpc materials have excellent resistance to chloride permeability ; during the heat treatment , the shrinkage of rpc developed quickly because of chemical reactions ; the rpc with slag mostly has the advantage of rpc without slag about resistance to solutions corrosion 研究结果表明：通过对rpc各组分掺量变化的研究，可以找到rpc的最优配合比；试件成型后的热养护制度对rpc的性能影响巨大； rpc的抗压应力?应变曲线可以反映出试件受破坏时微裂纹的扩展情况，刚纤维的掺入可以大幅改善rpc的韧性； rpc在成型后存在较大的收缩，而其中的化学收缩要远远大于干燥收缩； rpc具有很强的抗氯离子渗透性能，浆体的密实度很高；通过x射线衍射实验，可以发现rpc的胶凝体中ch晶体已经几乎不存在，胶凝体主要由c - s - h凝胶和未水化水泥颗粒组成；在抗溶液侵蚀的实验中，掺矿渣rpc的抗溶液侵蚀性能在绝大多数情况下要好于不掺矿渣试件，酸、碱溶液和浙江工业大学硕士学位论文摘要一些盐溶液都会对rpc的结构产生侵蚀作用，但是机理各有不同。
This means the saturation degree of concrete is different . by means of analyzing the l9 ( 34 ) orthogonal table , the air content is the chief factor , the second factor is water binder ratio and the third is mineral admixture in both high water pressure and low water pressure . the water saturation degree of concrete in damaging point ( e6 / e0 = 60 % ) can be found by measuring the dynamic modulus of elasticity after six freezing - thawing cycles 采用l9 ( 34 )正交表对水胶比、含气量和掺合料三个因素进行分析,试验结果表明:在自然情况下,影响混凝土水饱和系数的主要因素是水胶比,而影响混凝土在盐溶液中饱和系数的主要因素则是含气量;在水压力作用下,无论压力大小,混凝土水饱和系数的影响次序依次为含气量、水胶比、掺合料。
By adopting the method of saturated aqueous salt solutions , the paper designs the equipment to produce the humidity source and scale pi sensors . based on the design and long period measurement of demarcated equipment , we get the lots of curve and data that shows the linear relation between capacity and moisture and good linearity and resolving power 采用饱和盐溶液法得到相应级别的湿度标准，对传感器进行标定试验并采用相应的数据处理方法，建立了感湿特征量与气相湿度之间的数学关系，最终给出其数学模型和各种指标。
The composite has excellent performance of water retaining , that the adsorbed water of 85 % is retained after being dried 10 days at the room temperature , and the adsorbed water of 45 % is retained after being dried 24 hours at 60 the factors influencing on water absorbency for the superabsorbent composite such as the kinds and concentration of starch , clay , crosslinker , initiator , the external salt solution and hydrolysis degree are investigated in this paper 该超吸水性复合材料在室温下干燥10天后的保水率为85 ，在60 2条件下加热24小时后的保水率为45 。本文较详尽地探讨了超吸水性复合材料的合成条件，并系统地研究了影响超吸水复合材料吸水倍率的各种因素。例如：粘土的种类及粘土的用量、淀粉的种类及淀粉的用量、交联剂的用量、引发剂的用量、水解度(氢氧化钠的用量) 、水解时间、外部盐溶液的种类及浓度等条件。
