摘要：A wide range of terrain features and landforms,which are exemplified by intricate geological formations and diverse rock compositions,are found in the western mountainous regions of *** areas frequently encounter geological *** one of the natural disasters,landslides lead to considerable loss of human life and *** mitigation of the losses caused by landslide disasters,a necessary measure for disaster prevention and mitigation involves conducting detailed investigations and monitoring of landslides,which is also the cornerstone of landslide *** study compares and analyzes the feasibility of the magnetotelluric detection method for landslides using the results of engineering geological surveys and landslide *** study aims to address the scientific problem of the validity of using magnetotelluric methods to detect landslide development *** Tangjiawan landslide signal on the left side of the K94+000~K94+145 section of the Wenma Expressway is analyzed by employing engineering geological survey,magnetotelluric detection,landslide monitoring,landslide analysis,and other *** results provide the static electrical characteristics of lithology,structure,and groundwater,as well as the dynamic electrical characteristics of landslide *** study focuses on analyzing the relationship between the methods of magnetotelluric detection and engineering geological surveys and the results of landslide *** workflow and methods for data collection,processing,inversion,interpretation,and analysis using the magnetotelluric method to detect the dynamic development process of landslides are presented in the *** conclusions indicate a strong correlation between the dynamic changes in magnetotelluric wave impedance with the surface displacement of landslides and the dynamic changes in *** use of the magnetotelluric method for landslide detection and monitoring is a fe

摘要：桥梁结构抗震设计时应考虑桥墩处局部场地条件对其地震响应的影响。多点激励反应谱法是进行空间地震动作用下桥梁结构抗震性能分析的常用方法。对于深水桥梁结构,现有的多点激励反应谱法未考虑水体的作用。本文基于辐射波浪理论,在桥梁结构振动方程中引入动水压力,建立考虑流固耦合作用的多点激励反应谱法,并验证其正确性。以某深水5跨连续梁桥为例,通过改变桥墩所处场地类型、抗震设防烈度、设计地震分组等参数,研究了不同场地条件下桥梁的纵向地震响应,揭示了局部场地效应对多跨连续梁桥纵向地震响应的影响规律。结果表明,随着桥墩3场地逐渐变软,其墩顶相对位移最多减小93.0%,场地类型对墩顶相对位移的影响大于对主梁轴力和墩底弯矩的影响;随着抗震设防烈度的增大,桥墩墩顶相对位移、主梁轴力和墩底弯矩增大7倍;随着震中距的增大,桥墩墩顶相对位移最多增大41.0%,主梁轴力增大18.0%左右,墩底弯矩增大30.0%左右。

摘要：四川盆地渝西区块Z203井区雷口坡组缺失,导致须家河组-嘉陵江组地层不整合接触,区内井漏频发,其中,Z203H5-2井钻至须家河组发生恶性井漏,采用常规化学方法堵漏34次仍未解决,采用膨胀管技术对漏失井段进行物理封堵,将原井段扩径至满足膨胀管下入的井筒条件后,下入膨胀管至目的井段并开展固井和膨胀作业,通过膨胀管底部水泥密封和顶部悬挂密封确保漏失井段完整封隔。应用表明,膨胀管技术可物理封堵须家河组-嘉二段顶漏失井段,将地层承压能力由1.07g/cm^(3)提高至1.95g/cm^(3)以上,后续钻井作业中未出现井漏复杂并顺利钻至龙马溪组顶中完,最终采用原设计井眼尺寸完井,该技术为处理突发复杂井况并最大限度保留原井眼尺寸提供了有效途径。

摘要：针对金属钯-银合金复合膜分离氦气中杂质氢气的应用进行探索性研究。按照法国CEA一套小型氦气净化试验装置CIGNE的设计参数,采用典型SSP设计,应用有限单元法求解模型。膜组块长度采用限定值0.5 m,膜高压侧压力为100 kPa,跨膜压力差为80 kPa。计算结果表明,一次通过即可使氢气浓度从1000μL/L降低到限定值5μL/L,在最优化吹扫气比例系数0.397 0情况下,氦气产出率为96.18%,满足系统设计要求。氢气浓度在膜组块内沿长度方向呈指数分布。对采用相同膜组块的另外两种典型设计TSSP和CMC也进行了初步计算和比较。

摘要：Using halide perovskite nanomaterials for solarto-fuel conversion has recently attracted a lot of attention due to their excellent photoelectric ***,severe photogenerated charge carrier recombinations and poor reaction kinetics greatly restrict their photocatalytic *** this study,a ternary WO_(3)/CsPbBr_(3)/ZIF-67 heterostructure was designed for efficient CO_(2) *** results indicate that the Z-scheme charge transfer pathway constructed between WO_(3)and CsPbBr_(3)ensures the effective transfer and separation of photogenerated charge ***,the subsequent surface modification of zeolitic imidazolate frameworks(ZIF-67)with active Co centers further benefits CO_(2)adsorption and ***,the synergistic effects of charge separation and CO_(2)uptake greatly promote the photocatalytic *** optimal WO_(3)/CsPbBr_(3)/ZIF-67 heterostructure yields a CO production of 99.38μmol g^(−1)in 3 h,which is 6.8 times of that produced by CsPbBr_(3).This work will inspire new insights in developing efficient photocatalysts for CO_(2)reduction and even more challenging photocatalytic reactions by elaborately regulating the functional ingredient.

摘要：该文提出基于Web Services的服务管理协议(WSSMP),用于有效地管理跨不同管理域的服务。利用Petri网对WSSMP进行了形式化描述,并利用Petri网的可达性分析对此协议进行了逻辑正确性验证,确保了此协议具有有界性、活性、完整性、前进性等性质,从而减少了协议设计中潜在的错误。并在仿真平台上进行了协议测试,测试表明读取大量对象时,随着读取对象数的增多,压缩WSSMP所使用的带宽增加很少,该协议适应服务管理需要大量处理数据的特性。

摘要：The titl angle measurement system based on the ADXL345 of three-axis acceleration sensor is introduced, and the composition and working principle of the system are described. The MSP430F149 microcontroller of ultra-low power and high performance is adopted. Firstly, the voltage value which is proportional to the acceleration value is output by ADXL345 when the system is powered. Secondly, the voltage value is converted into the corresponding digital signal by AD converter of the sensor. Thirdly, the digital signal is transformed into the titl angle according to the arithmetic processing of the MSP430F149. Finally, the corresponding angle is displayed on the liquid crystal display （LCD） screen. Experimental results show that the design has high sensitivity and response speed compared with the conventional methods. It is suitable for practical engineering application because of simple structure, low cost and low power consumption.

摘要：基于数据挖掘技术,对核级管道支吊架根部智能选型数据预处理方法开展了研究,研究了根部选型预处理的分类方法,设计了数据预处理流程,确定了支吊架根部选型的优先级顺序;基于自组织映射网络(SOM)聚类算法,研究了支吊架根部智能选型数据的计算流程;设计了实验平台,基于实际工程数据,验证了算法的可行性和有效性,证明了数据的预处理及聚类效果明显。

摘要：苏轼文人集团是一个以苏轼为中心,"苏门六君子"及李公麟、米芾等书画艺术家为主体的文士集团。他们的艺术思想直接影响到北宋元礻右以后的书画风气和艺术批评。其"士人画"的艺术思想,"以诗为画"的艺术追求甚至突破士人书画的界限影响到院体绘画,《宣和画谱》作为北宋宫廷主持修撰的重要艺术批评资料,虽然因政治因素没有直接收录苏轼等人,其艺术观点却深受苏轼文人集团艺术思想的影响。

摘要：对利用原材料格鲁斑工程胶合竹(glubam)和SPF(云杉-松-冷杉)木材组合成的正交胶合竹木(CLBT)柱和利用SPF制成的正交胶合木(CLT)柱进行试验研究。分析其竖向应变、横向应变、侧向挠度、极限承载力等随长细比的变化规律。并把CLBT和CLT进行对比,分析其极限承载力的变化情况,探讨CLBT和CLT的破坏形态和破坏机理,最后通过参考国内外木结构设计规范,以及改进后的正交胶合竹木承载力公式计算试件承载力并与试验值对比分析。试验结果表明:CLBT的极限承载力比CLT的极限承载力增加了40.49%~61.01%,侧向刚度有明显增加,峰值竖向应变增加了30.45%~56.11%。CLT的试验值和美国木结构设计规范计算的理论值吻合较好,而与国内木结构设计标准计算的理论值随试件长细比的增大计算结果越来越偏保守。CLBT的试验值和文章改进的正交胶合竹木承载力公式计算的理论值吻合较好。