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- Analysis and prevention and cure of the seasonal freeze thawing and frost boiling 路基季节性冻融翻浆病害分析与防治
- seasonal freeze thawing 季节性冻融
- In this experiment PST lipsome was produced by freeze thawing method. 采用冰冻熔融法制备脂质体,包封率进行测定可达29%25。
- The polygonal cracking is believed to have resulted from seasonal freezing and thawing of surface ice. 这种多边状裂痕被认为是表面冰季节性的冻结和融解导致的。
- The effects of PVP in formulation and freeze thawing steps on drug leakage and aggregation of tanshinone liposomes were investigated. 考察了聚乙烯吡咯烷酮(PVP)以及冻融处理对丹参酮脂质体的药物渗漏和微粒聚结特性的影响。
- This artic le has discussed the advantage of different kinds of prepartions:reverse_phase e vaporation, crush, freeze thawing . 通过对其包裹率的测定,结果表明:反相蒸发法包裹率高,反相蒸发法为最佳工艺。
- The paper studied the Solubilizing effect of solvent extraction, freeze thawing, ultrasonication, phosphoric acid treating and enzymatic hydrolysis on Spirulina dried Powder. 对溶剂浸提,反复冻融,超声波处理,磷酸处理和酶解技术对螺旋藻粉的增溶效果进行了比较。
- Methods The tumor antigen peptides from 4T1 breast cancer cells were acquired by freeze thawing method and HSP70-4T1 peptides complex was reconstructed in vitro. 方法冻融法获取BALB/C小鼠4T1乳腺癌细胞抗原肽,体外重组HSP70-4T1抗原肽复合物。
- A dynamic module damage model was built to predict the dynamic strength and maximum dynamic module of the silty clay after every freeze thaw cycle. 建立了动模量损失模型,能够预测每一次冻融循环后的动强度和最大动模量。
- Reach the Conclusion that the freeze thawing extraction, and Centrifugation, and then enzymatic hydrolysis of the filter residue is the optimum solubilization methot. 发现以反复冻融浸提,其渣再酶解处理为最佳增溶方法。
- The built prediction model is characterized by high precision, can be used to evaluate the effect of the freeze thaw cycles on the service life of the silty clay roadbed. 通过与试验对比可知,预测模型具有较高的精度,可以用来评估冻融循环对粉质黏土路基使用寿命的影响。
- Objective To investigate the anti-chronic myeloid leukemia(CML) effect of cytotoxicity T lymphocytes(CTL) activated by dendritic cells(DC) pulsed with freeze thaw K562 lysates antigan. 目的研究K562冻融抗原负载的健康供者来源的树突状细胞(DC)诱导细胞毒性T淋巴细胞(CTL)体外杀伤慢性粒细胞白血病(CML)细胞的毒性效应。
- The effects of the hydrophilic monomer AA and initiator K 2S 2O 8 on the electrolyte stability, freeze thaw stability and mechanical stability for the copolymer(MMA/BA/AA) soap free emulsion(pH=8)have been studied. 研究了亲水性单体AA和引发剂K2 S2 O8用量对三元共聚物 (MMA/BA/AA)无皂乳液 (pH =8)的电解质稳定性、冻融稳定性和机械稳定性的影响。
- On the basis of the results obtained from comparison teats of fly ash soils and silty clay on dynamic strength under freeze thaw cycles, the dynamic strength was quantitatively analyzed. 摘要根据粉煤灰土和粉质黏土经过冻融循环后动强度的对比试验,对粉煤灰土和粉质黏土的动强度做出了定量分析。
- Wei Wenshou, Qin Dahe, Seasonal Frozen Earth and Arid Ecological Environment in Northwest China, Third International Conference on Cryopedology, Copenhagen 2001. 魏文寿.;现代沙漠对气候变化的响应与反馈
- Seasonal frozen damage is a very important problem in building road in the north of our country.The problems of swelling and road mudding all come of water translocation. 季节性冻害一直是困扰我国北方地区道路建设的一个重要问题,常见的冻胀、翻浆等现象都是由水分迁移引起的。
- The lengthwise cracks caused by frost heave,and settlem ent, bulge, rut caused by spring thaw are the main forms of frost damage of roa ds in seasonally frozen soil region. 冻胀形成的纵向裂缝和道路翻浆导致的沉陷鼓包及车辙变形是季节冻土区高速公路路基冻害的主要形式。
- freeze thawing and frost boiling 冻融翻浆
- The strength of frozen soil will decrease obviously if it is thawed, especially when ice lens is abundant in it, which is the main cause of the mud pumping in subgrade as well as the instability of foundation in seasonal frozen ground regions. 摘要冻土,特别是含冰透镜体的冻土解冻时,出现强度大幅度下降的弱化现象,这是季节冻土区内路基春季翻浆冒泥、地基失稳的重要原因。
- Recent Studies of Concrete to Freeze Thaw Damage 混凝土冻融破坏研究现状