农村饮水工程适宜水质净化技术

农村饮水工程根据不同的原水水质条件，宜采用不同的水质净化技术。对地表水浑浊度长年低于20NTU、瞬间不超过60NTU原水，可采用微絮凝直接过滤加消毒或慢滤加消毒净化工艺；浑浊度长年低于500NTU、瞬间不超过1000NTU的原水，采用混凝沉淀（澄清）过滤、消毒的常规净水工艺。对于特殊水质如氟超标的地下水、砷超标的地下水、苦咸水及其他污染水，根据不同情况，可分别采用活性氧化铝吸附法、混凝沉淀法、多介质过滤法、铁盐混凝沉淀法、电渗析法、反渗透法等不同方式予以处理。     

Effect of RE on Granulation of Eutectic Carbide in Ledeburite Steel

ＲｅｃｅｎｔｌｙｔｈｅｂｅｎｅｆｉｃｉａｌａｃｔｉｏｎｓｏｆＲＥｏｎｉｒｏｎａｎｄｓｔｅｅｌｓｈａｖｅｂｅｅｎｒｅｐｏｒｔｅｄａｒｏｕｎｄｔｈｅｗｏｒｌｄ．ＲＥｃａｎｎｏｔｏｎｌｙｄｅｏｘｉｄｉｚｅａｎｄｄｅｓｕｌｐｈｕｒｉｚｅｔｈｅｍｅｌｔａｎｄｆ...     

Biological Effects of Flammulina Velutipes Richin RE on Chinese Kunming Mice

ＢｉｏｌｏｇｉｃａｌＥｆｆｅｃｔｓｏｆＦｌａｍｍｕｌｉｎａＶｅｌｕｔｉｐｅｓＲｉｃｈｉｎＲＥｏｎＣｈｉｎｅｓｅＫｕｎｍｉｎｇＭｉｃｅＬｉａｎｇＤｉｎｇｂａｎｇ（梁定邦）；ＣｕｉＤｅｆａｎｇ（崔德芳）；ＺｈａｎｇＪｉｎｔｏｎｇ（张金桐）（Ｄｅｐａｒｔｍ...     

钨带灯的稳定性判据试验

我们通过对国产ＢＷ—１４００型真空钨带灯的稳定性判据进行研究，发现通过钨带灯的电流达到稳定的时间很短（小于５分钟），而钨带灯的灯电阻需要经过２０分钟后才能达到稳定，因此，用电流稳定性作为钨带灯的热平衡判据是不够的，更可靠的判据还应看灯电阻是否达到平衡。     

高产高效综采工作面几个技术问题的探讨

在总结东北区综采工作面生产经验的基础上，论述了实现高产高效综采工作面的有关技术问题和解决方法。     

相变存储器存储单元瞬态电流测量

介绍了相变存储单元瞬态电流的测量方法。根据相变存储器的工作特性,利用微弱电流取样电阻测量法,合理选择测量参数测得了相变存储单元的瞬态电流,电阻与电流关系特性曲线和动态电阻。并根据测量电路等效电路模型分析影响测量的因素,估算出电路中的分布电容。     

基于区域重组的异构FPGA工艺映射算法

传统异构FPGA工艺映射算法一般不打破实现专用功能和查找表功能的子网表之间的层次边界,因而缩小了映射的优化空间.为此提出一种利用区域重组打破单元间层次边界的异构FPGA工艺映射算法.首先利用贪心策略实现FPGA多单元的映射,即优先使用性能好的专用功能单元;然后利用标记锥实现子网表之间的区域重组,打破专用功能单元和查找表之间的层次边界,减小了映射结果的面积和延迟开销.实验结果表明,与公认的ABC中的工艺映射算法相比,该算法能平均减少逻辑单元面积12.2%,减少电路关键路径延时2.5%.     

Simple Question Answering over Knowledge Graph Enhanced by Question Pattern Classification

Knowledge and Information Systems - Question answering over knowledge graph (KGQA), which automatically answers natural language questions by querying the facts in knowledge graph (KG), has drawn...     

The parameterized level set method for structural topology optimization with shape sensitivity constraint factor

In recent years, the parameterized level set method (PLSM) has attracted widespread attention for its good stability, high efficiency and the smooth result of topology optimization compared with the conventional level set method. In the PLSM, the radial basis functions (RBFs) are often used to perform interpolation fitting for the conventional level set equation, thereby transforming the iteratively updating partial differential equation (PDE) into ordinary differential equations (ODEs). Hence, the RBFs play a key role in improving efficiency, accuracy and stability of the numerical computation in the PLSM for structural topology optimization, which can describe the structural topology and its change in the optimization process. In particular, the compactly supported radial basis function (CS-RBF) has been widely used in the PLSM for structural topology optimization because it enjoys considerable advantages. In this work, based on the CS-RBF, we propose a PLSM for structural topology optimization by adding the shape sensitivity constraint factor to control the step length in the iterations while updating the design variables with the method of moving asymptote (MMA). With the shape sensitivity constraint factor, the updating step length is changeable and controllable in the iterative process of MMA algorithm so as to increase the optimization speed. Therefore, the efficiency and stability of structural topology optimization can be improved by this method. The feasibility and effectiveness of this method are demonstrated by several typical numerical examples involving topology optimization of single-material and multi-material structures.

     

Modeling polypharmacy effects with heterogeneous signed graph convolutional networks

Applied Intelligence - Pharmaceutical drug combinations can effectively treat various medical conditions. However, some combinations can cause serious adverse drug reactions (ADR). Therefore,...