In order to investigate the tolerance of ectomycorrhizal fungi to heavy metals in vitro , three culture methods , namely liquid culture without agitation , liquid culture with agitation and solid agar culture , were investigated to determine which method would give the best combination of fungal biomass and ec50 . the results indicated that liquid medium without agitation was the best culture method 为研究外生菌根真菌本身对重金属污染的耐性，比较了液体静置、液体摇床和琼脂固体培养这三种常用的菌丝体的纯培养方法，以真菌生物量大小和分离难易程度为主要指标，筛选出液体静置方法为最优方法。
Ftir and tem analysis show that lecithin can attach on the surface of ha particles to improve greatly their dispersion in chloroform after demulsification . therefore , a suspension of nano - sized hydroxyapatite particles with excellent dispersion in organic media can be obtained . when mixed with pmma , the ha fillers are dispersed homogeneously in the matrix 以卵磷脂作乳化剂，在形成的水/氯仿乳液中制备ha ，能获得高纯的、分散效果良好的纳米ha晶粒，再通过静置破乳，可得到分散于氯仿中的ha的悬浮液。
More than 300 prismoid concrete specimens with calcareous aggregate were made . three factors , temperature in fire , standing time and cooling type and cure methods after cool , were considered to simulate possible appearance in fire and after fire . many test schemes were planned for different purposes 设计制作了300余个钙质骨料混凝土棱柱体试件，为了模拟火灾时及火灾后可能出现的情况，分别考虑了不同的火灾受火温度、静置时间和冷却及冷却后的养护方式三种影响因素，根据试验目的的不同，设计了多种试验方案。
The dual - bath coagulation method suggested by j . a . va n ' t hof could be used in membranes with high selectivity clearance rate of low - molecular weight substances and moderate water flux theoretically . therefore it may be applied in the field of hemofiltration . to improve and optimize the performance of the pes ultrafiltration membrane applied in the hf , here the flat membranes and hollow fiber ( hf ) membranes are made in certain conditions based on the dual - bath coagulation method where pes is used as the membrane material , dmso as solvent and pvp & peg as additives this paper includes five parts as follow : 1 为了改善和优化聚醚砜超滤膜(单浴法)在血液过滤实际应用中的性能，本论文以j . a . van ' thof等提出的双凝固浴法为基础，以聚醚砜( pes )为主要成膜材料，以二甲基亚砜为溶剂，并添加一定分子量的致孔剂( pvp ，聚乙烯吡咯烷酮)以及一定分子量的添加剂( peg ，聚乙二醇)按照一定配比在一定温度下制成透明均一的铸膜液，静置脱泡后在一定的工艺条件下制成聚醚砜平板膜和中空纤维膜，然后通过测试膜的结构和性能来评估其用于血液过滤中的前景。
Tensile properties and impact properties measurements were done at room temperature . the volume resistivity of rectangular samples was measured using a zc36 electrometer and a high 240a voltage supply , for samples with a low resistivity level a dt - 9205b digital multimeter was used , silver paint was applied to ensure complete contact between sample and electrodes , namely , to eliminate the contact resistance . the phase morphology of blends was also studied using a jeol jsm - 5900lv scanning electron microscope ( sem ) 体积电阻率的测定：当r _ v 10 ~ 8时，制成100 100 4mm板材，用zc36型高阻仪测量；当r _ v 10 ~ 8时，用dt - 9205b型数字式万用表测试试样的体积电阻，为了减小接触电阻对测试的影响，采用银导电胶将铜片粘接在试样的两个端面上，静置24小时，待银导电胶凝固，试谢长琼:热拉仲对pet / pe / cb复合导电体系形态和性能的影响样的电阻稳定后再测量。
At the same time an apparatus of zone melting is designed , the method of zone melting is used to purify the purified product of recrystalizing . after purification , the homogeneity and stability of the purified product of antioxidant d and bht are examined by high performance liquid chromatography ( hplc ) 实验研究结果：防老剂d重结晶提纯工艺为：每次取10g工业品防老剂d ，经过碱洗后，去离子水洗涤至中性，溶于100ml乙醇中，同时用粉状活性炭( 1g次)脱色、过滤、母液静置2h后，再放入冰箱结晶2h 。
A lot of experiments have been done in the process of exploiture soft packaging li - ion battery about how to choice the rational arts and crafts . the content include : how to deal with the collector , add how much pvdf in the material , how long the material need to stirring and the right viscidity , how much condubtivity agent the electrode need , what theckness is best , choice different collectors , the degree of dryness of the electrode , theckness of pressed model , how much electrolyte will be added , placement how long after added the electrolyte , system of formation how to influnce the battery , in formation the battery need or not need preesure from outside , how to vacuumize and the optimize matching positive pole and negative pole . with these practice make sure the parameter of the positive pole should less than 90 m ; according to different vacuumize order the conduc - tivity agent in anode will be 5mass % and 9mass % , respectively , and in cathode the data is 2mass % ; every 100mah added to 0 . 4 ml electrolyte ; before formation the battery should be placement 8 hours and the system of formation must be less than 0 . 01c before the voltage reach to 3 . 0v ; should press in outside when battery in formation ; to these batteries which capacity more than 350mah the vacuum time not excess 15s ; the optimize matching positive pole and negative pole between 2 . 10 : 1 and 2 . 15 : 1 . finally make out the battery which cycling performance and security are all very well 液态软包装锂离子电池的研究主要是对关键工艺进行了优化设计,具体包括:集流体的处理、 pvdf的加入量、浆料搅拌时间和粘度、导电剂的加入量、电极膜的厚度、不同集流体的选择、电极膜的干燥程度、压型的厚度、电解液的加入量、注入电解液后静置时间的长短、化成制度的影响、化成时电池所具有的压力影响、抽真空的处理、正负极活性物质的匹配。最后确定出液态软包装锂离子电池最佳工艺参数:正极膜的厚度小于90 m ;根据化成时不同抽真空顺序,确定正极膜中的导电剂的加入量分别为5mass %和9mass % ;负极膜中导电剂的加入量为2mass % ;电解液的加入量为每100mah添加0 . 4ml ;化成前电池的静置时间应当大于8h ;电池在3 . 0v之前采用小于0 . 01c的化成制度;在化成过程中应当施加一定的外部压力;对于350mah的电池抽真空的延时不应大于15s ;而正负极活性物质的质量比应当在2 . 1 : 1 2 . 15 : 1之间。
Concrete compression strength was predicted by artificial neural network ( ann ) considered three factors , such as temperature , standing time and cooling and curing process after cool . also it was predicted in different rebound and ultrasonic values . fire resisting performance of concrete was studied and predicted 通过人工神经网络( ann )方法预测了火灾后考虑不同受火温度、静置时间、冷却及冷却后的养护方式三种影响因素的混凝土抗压强度；预测了火灾后考虑不同回弹值、大连理工大学博士学位论文一超声波速值等因素的混凝上抗压强度，研究并预测了火灾后混凝土的抗火性能。
