摘要：混合K边密度计作为一种用于核材料衡算的无损分析仪器,仪器测量部件的结构对测量结果影响较大。本文采用Geant4软件对混合K边密度计测量部件的结构参数及其样品测量进行蒙特卡罗模拟研究,模拟分析了X光管管压、滤片材料及厚度、X射线源-样品-探测器夹角及出射准直器材料、孔径、长度等因素对能谱的影响,确定了模拟装置的X光管管压为140 kV,滤片材料为Cd,滤片厚度1mm,X射线源-样品-探测器夹角为30°,出射准直器材料为W,孔径为2.5 mm,长度为1.5 cm;建立了纯U样品、纯Pu样品以及U/Pu混合样品的拟合曲线。模拟分析结果验证了模拟装置和建模模型的可靠性,为仪器实际结构设计提供了理论支撑。

摘要：分析了公路工程工地试验室的建设要求及必要性,并指出了目前工地试验室建设及管理方面的常见问题,探讨了工地试验室标准化建设和规范化管理的具体方案及实施措施。

摘要：Based on the active site of lanosterol 14α-demethylase of azole antifungal agents,sixteen 1-（1H-1,2,4-triazole-1-yl）- 2-（2,4- difluorophenyl）-3-（N-n-butyl-N-1-substitutedbenzyl-4-methylene-1H-1,2,3-triazole）-2-propanols have been designed,synthesized and evaluated as antifungal *** of preliminary antifungal tests against eight human pathogenic fungi in vitro showed that some of the compounds exhibited excellent activities with broad spectrum.

摘要：Cryptocurrencies represented by Bitcoin have fully demonstrated their advantages and great potential in payment and monetary systems during the last *** mining pool,which is considered the source of Bitcoin,is the cornerstone of market *** surveillance of the mining pool can help regulators effectively assess the overall health of Bitcoin and ***,the anonymity of mining-pool miners and the difficulty of analyzing large numbers of transactions limit in-depth *** is also a challenge to achieve intuitive and comprehensive monitoring of multi-source heterogeneous *** this study,we present SuPoolVisor,an interactive visual analytics system that supports surveillance of the mining pool and de-anonymization by visual *** is divided into pool level and address *** the pool level,we use a sorted stream graph to illustrate the evolution of computing power of pools over time,and glyphs are designed in two other views to demonstrate the influence scope of the mining pool and the migration of pool *** the address level,we use a force-directed graph and a massive sequence view to present the dynamic address network in the mining ***,these two views,together with the Radviz view,support an iterative visual reasoning process for de-anonymization of pool members and provide interactions for cross-view analysis and identity *** and usability of SuPoolVisor are demonstrated using three cases,in which we cooperate closely with experts in this field.

摘要：近几年由于化纤行业的快速发展,物流包装自动化程度越来越高,企业对自动包装生产线的要求也越来越高,因此提高自动包装系统的产量和效率显得尤为重要。丝箱的推丝机构是化纤自动包装系统中的核心设备,而推丝机的运行效率、可靠性和便捷性决定了自动包装线的运行效率。因此研究推丝机构的控制与调度具有重要的意义。针对推丝机构作业特点,全面梳理了丝箱出库上线的工艺流程,详细介绍了推丝机控制的关键参数与控制调度流程,尤其是对第一层和最后一层丝锭作业的动作进行了优化,并增加了位置校验功能,从而优化了推丝机作业节拍和提高了自动包装系统的包装上线量,为自动包装系统全流程高效作业奠定了坚实的基础。

摘要：目的将传统非遗文化中的秸秆拼贴艺术与绿色环保利用理念相结合,探究秸秆拼贴艺术在现代家具装饰设计中的应用理论和设计方法。方法以民俗学、现代设计美学、工业设计、家具装饰设计等相关知识为理论基础,总结归纳传统秸秆拼贴艺术的制作工艺、应用现状及不足,对秸秆拼贴肌理表情的创新设计思路进行详细分析,使其作为新型装饰元素应用于现代家具设计。结论对传统秸秆拼贴艺术的设计理念及制备工艺进行创新,使其与现代家具装饰相结合,既传承了非物质文化遗产,又拓展了现代家具的装饰材料和设计方法,从而满足现代社会审美,对指导现代家具装饰的创新设计有着重要意义。

摘要：研究介绍了双坡度异形截面钢结构采光顶受场地限制,依据其结构特点,对采光顶进行深化设计,减小钢梁长度,减轻重量,并采用5 t汽车式起重机或蜘蛛吊将其吊至预定位置后进行焊接安装作业,合理编排钢梁施工工序,并利用TEKLA建模下料钢梁异形连接剖口,对交叉中心点定位钢梁研发出一种定位槽以解决定位安装问题。

摘要：湿地是国家重要的战略性生态资源,是生态产品的主要供给者,因缺乏统一的湿地生态产品价值度量体系和制度、有效价值变现机制手段以及与国土空间管控衔接不足等问题,导致湿地生态价值实现难,转化率低。本文基于当前湿地生态产品价值实现存在的问题和难点,提出基于空间管制和生态产品价值核算的湿地生态产品价值实现路径,即在遵循湿地空间分区分级的基础上,分区编制湿地生态产品目录清单并核算生态产品价值,针对物质供给类、调节服务类和文化服务类3类生态产品,分类分区提出适宜的价值实现策略和模式,促进生态产品价值实现与湿地的管理发展相融合,增强湿地生态产品价值转化的可行性,为制定和完善湿地生态产品价值实现政策提供参考和借鉴。

摘要：受雨季连续降雨作用的影响,太和镇冰碛土古滑坡为一方量约为1 200×10^(4) m^(3)巨型土石混合体古滑坡于2021年开始复活进入蠕滑阶段,到2022年雨季开始增速下滑,严重威胁到矿坑内部的正常开采。基于现场调查、钻探揭露、现场监测、物理力学试验,在查明古滑坡微地形、地质结构特征和变形失稳阶段的基础上,对其影响因素及复活机制进行探究。结果表明:堆积岩土体及地形地貌是古滑坡复活的孕灾基础,降雨入渗作用、采矿开挖是滑坡复活的诱发因素。分析表明,受长期以来的降雨淋滤作用影响,细颗粒物质在基覆界面处进行堆积形成滑带,采矿开挖使前缘出现有效临空面,且受地下水长期影响,滑带土的强度逐渐削减,降雨导致渗流作用加剧,抗剪强度降低,从而诱发古滑坡复活。研究成果对类似工程问题具有一定的参考价值。

摘要：In this paper,elastic metasurfaces composed of zigzag units are proposed to manipulate flexural waves at a deep subwavelength *** the parameter optimization of the genetic algorithm,units with full transmission and full phase control can be found,while the width is only one-fifth of the *** outstanding capability of the units is explained by *** wave *** flat and the curved metasurfaces for focusing are designed and simulated,showing excellent *** results of the flat metasurface show that the incident wave energy at the focal point is enhanced over 6 times,verifying the simulation *** proposed metasurfaces could be useful in the design *** and efficient elastic devices.