抗浮锚杆在地下结构抗浮中的耐久性研究进展与发展方向

锚杆的耐久性问题是当前岩土锚固技术中非常重要但相对薄弱的研究环节,抗浮锚杆工作环境恶劣,常处于水下或干湿交替、荷载波动范围、冻融循环及腐蚀介质等环境中,锚筋极易遭受侵蚀破坏,对抗浮锚杆的耐久性提出了新的挑战。本文简要介绍了抗浮锚杆的结构及作用机制,明确抗浮锚杆在地下结构中的基本工作原理,对影响抗浮锚杆耐久性的主要因素进行了详细分析,分别介绍了腐蚀环境、粘结剂以及多因素耦合作用对抗浮锚杆长期服役性能的影响,以及对于如何提高抗浮锚杆的耐久性给出解决方法,最后对抗浮锚杆在地下结构中的应用进行了归纳总结,提出了目前仍存在的不足与挑战,并针对抗浮锚杆的耐久性问题提供了相应建议。     

热载体再生时碳和氢燃烧动力学的同时测定

提出了同时测定热载体再生时碳和氢燃烧动力学的实验方法并建立了实验装置.用外推法处理实验数据.得到了热载体再生动力学方程.结果表明.热载体与CRC—1裂化催化剂再生动力学方程在形式上是一致的.只是动力学常数有些差别.该方法及实验装置同样适用于裂化催化剂再生动力学的研究.     

STUDY ON DATA PROCESSING WITH DERIVATIVE IN DIFFERENTIAL PULSE POLAROGRAPHY——PART Ⅰ: THEORY

The formulas of current of first and second derivative of differential pulse polarography (DPP) which has been deduced in this paper indicate that derivative may be enhance the sensitivity of DPP. By the analogy/data transformation、smoothing、and numerical differentiation, we can obtain the derivative current of DPP.     

瓶装物料冷冻干燥的模拟与实验

通过实验值与模型的模拟值比较发现，模型对升华干燥阶段模拟较好。通过模型分析，研究了物料内部的温度分布、升华界面与时间的关系、侧面输入热量对过程的影响、物料厚度与瓶径之比对干燥速率的影响     

沉降预测中的灰色模型理论与Asaoka法

在沉降预测的各种方法中 ,Asaoka法是其中主要方法之一 ,而灰色模型理论也开始得到应用 .本文对两种方法的一阶微分方程作了比较 ,证明在一定条件下 ,灰色模型理论和 Asaoka法两者的一阶微分方程是严格一致的 ,这对灰色模型理论在地基沉降预测中的推广应用具有重要意义.     

Brownian motion: absolute negative particle mobility

Noise effects in technological applications, far from being a nuisance, can be exploited with advantage - for example, unavoidable thermal fluctuations have found application in the transport and sorting of colloidal particles and biomolecules. Here we use a microfluidic system to demonstrate a paradoxical migration mechanism in which particles always move in a direction opposite to the net acting force ('absolute negative mobility') as a result of an interplay between thermal noise, a periodic and symmetric microstructure, and a biased alternating-current electric field. This counterintuitive phenomenon could be used for bioanalytical purposes, for example in the separation and fractionation of colloids, biological molecules and cells.     

基于灰色系统的成熟旅游地游客满意度研究——以南京中山陵园风景名胜区为例

在游客市场调查的基础上，运用灰色系统模型计算了处于成熟发展阶段的中山陵园风景名胜区游客满意度并对满意度计算结果给予验证和分析，提出中山陵园风景名胜区提升游客满意度的措施，以期对处于成熟发展阶段的旅游地实施满意度调研、分析及促进成熟旅游地的可持续发展起指导作用．     

A Heuristic Clustering Algorithm for Intrusion Detection Based on Information Entropy

0Introduction Withmoreandmorestudyingprojectsapplythedataminingtechnologytointrusiondetection,agreatdealofdataminingalgorithmsforintrusiondetectionhavebeenre alized[1],thetypicalis:associationruleminingalgorithm,frequencysceneruleminingalgorithm,classificationalgo rithm,andclusteringalgorithm.Thefirstthreealgorithmofthosebelongto“thesupervisedstudying”,whichneedatrain ingdatasetofgoodqualityandwithmarking,butitisnoteasyusuallytogetthetrainingdataset[2].However,cluste ringalgorithmis“theunsu…     

Purification and Characterization of an Antibacterial Protein from the Cultured Mycelia of Cordyceps sinensis

0 IntroductionAlnattie mdicfrroobmiala p wriodteei nvsar iheatdy boefe linv ifnogun odr gaanndis ismos--Bacteria[1], fungi[2 ,3], plants[4]and ani mals[5].Those proteins displayed a wide spectrumof anti mi-crobial activity against different species of viruses ,bacteria andfungi .Over the past few years ,several anti microbialpeptides and proteins were foundinfungus ,such asAFP fromAspergillus giganteus[6], Anafp fromAspergillus niger[7], Zygocin fromthe yeastZy-gosaccharomyces bailii[8],an…