高温好氧发酵法一次处理含油污泥

从被原油污染的土壤、排污口旁的土壤以及原油处理厂处理后的排除水中，筛选出3株烃类高效降解菌，将菌液混合后加入到含油污泥中，并加入木屑和稻草作为调理剂和膨胀剂，鸡粪作为氮源，在强制通风下进行高温好氧发酵，经24天后，加入菌液的含油污泥的含油量从18．77％降至8．87％，油脱除率达到53％；加入产品污泥回流的含油量从18．77％降至10．34％，油脱除率达到45％。经发酵后，臭味完全消失。实验证明了含油污泥生物处理的可行性。     

软球模型在颗粒流全尺度模拟中的验证和分析

针对颗粒流全尺度模拟时的干碰撞问题,在内嵌边界多重直接力全尺度算法中加入软球碰撞模型.通过空气中小球碰撞壁面和小球在粗糙表面上滚动2个典型算例,验证了软球模型在全尺度模拟中对干碰撞作用求解的适用性和准确性.对软球模型各主要参数的敏感度分析表明:时间步长越小,碰撞计算越精确;弹簧刚度系数越小,软球模型的接触特征时间越长,全尺度计算受到的资源限制越小;网格尺度、速度恢复系数对软球模型在全尺度模拟中的求解精度影响不大.实验室尺度气固鼓泡床的全尺度模拟结果表明,该方法可用于计算复杂的稠密流动体系.     

三维混合层中大涡结构与扩散颗粒的相互作用

In order to understand the interaction between large-scale vortex structure and particles, a two-way coupling temporal mixing layer laden with particles at a Stokes number of 5 with different mass loading planted initially in the upper half region is numerically studied. The pseudospectral method is used for the flow fluid and the Lagrangian approach is employed to trace particles. The momentum coupling effect introduced by a particle is approximated to a point force. The simulation results show that the coherent structures are still dominant in the mixing layer, but the large-scale vortex structure and particle dispersion are modulated. The length of large-scale vortex structure is shortened and the pairing is delayed. At the same time, the particles are distributed more evenly in the whole flow field as the mass loading is increased, but the particle dispersion along the transverse direction differs from that along the spanwise direction, which indicates that the effect by the addition of particle on the suanwise large-scale vortex structure is different from the streamwise counterpart.     

河道治理工程水土保持监测方法探讨——以深圳河治理第4期工程为例

江河治理一直是我国生态文明建设的重点,开展河道治理工程的水土保持监测工作是预防其水土流失的重要举措。为提高生产开发建设项目水土保持监测数据的准确性和科学性,以深圳河治理第4期工程为例,探讨了江河治理项目中水土保持监测的内容、方法以及监测体系,并对监测结果进行了讨论。分析结果可为相关江河治理工程水土保持监测项目提供参考和借鉴。     

水电站建设过程中的投资控制

论述了投资控制的含义、投资控制的关键环节、投资控制的分类、投资控制的主要措施及如何理顺工程投资的控制几个关系。在此基础上，对各阶段的优化对策进行分析.     

中风化软质岩石地基承载力及桩端阻力的取值探讨

该文探讨了工程勘察实践中如何根据岩石抗压强度标准值确定中风化软质岩石的地基承载力特征值并进一步确定其桩端阻力特征值.文中得到的一些结论,对国家现行规范某些条款是一个很好的补充.     

武昌中风化红砂岩特性和嵌岩桩承载力确定

通过对中风化红砂岩室内抗压强度试验、现场载荷试验、抽芯试验,结合场地工程勘察资料,确定岩基承载力特征值。人工挖孔扩底桩以该层作为桩端持力层,并进行了桩的静载荷试验。本文对这些试验中的大量数据进行了总结和归纳,特别是对中风化红砂岩的一些变形特性进行了分析,确定了在实际工程中有重要参考价值的数据,同时也指出了规范中相应条款中过于保守的问题,并提出了修改意见。     

气固可压缩湍射流中颗粒扩散的直接数值模拟

A numerical method was developed to directly simulate the compressible, particle-laden turbulent jets.The fourth order compact finite difference schemes were used to discretize the space derivatives. The Lagrangian method was adopted to simulate the particle motion based on one-way coupling. It is found that the turbulent intensity profiles attain self-similar status in the jet downstream regions. At the Stokes number of 1, particles are concentrated largely in the outer boundaries of the large-scale vortex structures with the most uneven distribution and the widest dispersion in the lateral direction. Particles at the much smaller Stokes numbers are distributed evenly in the flow field, and the lateral dispersion is also considerable. Distribution of particles at much larger Stokes numbers is more uniform and the lateral dispersion becomes small. In addition, the inflow conditions have different effects on the particle dispersion. The direct numerical simulation (DNS) results accord with the previous experiments and numerical studies.     

罗曼士（Romens）5英寸混合式两分频静电书架音箱的制作

本音箱是由自制的3英寸×7英寸方形静电高音扬声器单元加上5英寸惠威D5低音扬声器构成，箱体设计为两分频高低音单元整体结构。     

用于交通流预测的自适应图生成跳跃网络

针对交通流数据复杂的时空相关性,提出新的基于深度学习的自适应图生成跳跃网络（AG-JNet模型）. 该模型由2个时空模块组成,每个时空模块分为2支,分别对时间相关性和空间相关性建模. 时间建模采用多层扩张卷积,在增大时间维度感受野的同时降低计算开销. 空间建模采用自适应图生成卷积,在不依赖图的固定结构下提取空间相关性. 在时间和空间的建模中均采用跳跃连接堆叠多层,以提升模型的深层特征提取能力,将时间特征和空间特征进行门控融合,提取出用于交通流量预测的时空特征. 在2个真实数据集PeMSD4和PeMSD8上的实验表明,AG-JNet在不同指标下取得了优异的性能.