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China Foundry 2024年第2期21卷 168-174页

作者： Zhi-yong Zhang Jiao-jiao Cheng Jia-qi xie Shi-bing Liu Kun Shi Jun Zhao Shenyang Research Institute of Foundry Co. Ltd.CAMShenyang 110022China National Key Laboratory of Advanced Casting Technologies Shenyang 110022China

Titanium matrix composites reinforced with ceramic particles are considered a promising engineering material due to their combination of high specific strength,low density,and high *** this study,the TA15-based composites reinforced with a volume fraction of 10% to 25%(TiB+TiC)were prepared using powder metallurgy and casting *** characterization and phase constitution were examined using optical microscopy(OM),scanning electron microscopy(SEM),and X-ray diffraction(XRD).In addition,the microhardness,room temperature(RT)and high temperature(HT)tensile properties of the composites were *** revealed that the reinforcements are distributed uniformly even in the composites with a high volume of TiB and ***,as the volume fraction exceeds 15%,TiB and TiC particles become coarsening and exhibit rod-like and dendritic-like *** increases gradually from 321.2 HV for the base alloy to a maximum of 473.3 HV as the reinforcement increases to 25vol.%.Tensile test results indicate that a reinforcement volume fraction above 20% is beneficial for enhancing tensile strength and yield strength at high temperatures,but it has an adverse effect on room temperature ***,if the reinforcement volume fraction is below 20%,it can improve high-temperature elongation when the temperature exceeds 600℃.

关键词： titanium matrix composites microstucture microhardness tensile properties in-situ synthesis

Preparation and interface state of phosphate tailing-based geopolymers

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Journal of Central South University 2024年第6期31卷 1900-1914页

作者： ZHANG Shou-xun xie Xian xie Rui-qi TONG Xiong WU Yu-yao LI Jia-wen LI Yue Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunming 650093China National&Regional Engineering Research Center for Green Comprehensive Utilization of Gangue Resources from Metal Mine Kunming 650093China

The long-term storage of phosphate tailings will occupy a large amount of land,pollute soil and groundwater,thus,it is crucial to achieve the harmless disposal of phosphate *** this study,high-performance geopolymers with compressive strength of 38.8 MPa were prepared by using phosphate tailings as the main raw material,fly ash as the active silicon-aluminum material,and water glass as the alkaline *** solid content of phosphate tailings and fly ash was 60% and 40%,respectively,and the water-cement ratio was *** results of XRD,FTIR,SEM-EDS and XPS show that the reactivity of phosphate tailings with alkaline activator is weak,and the silicon-aluminum material can react with alkaline activator to form zeolite and gel,and encapsulate/cover the phosphate tailings to form a dense phosphate tailings-based *** the formation of geopolymers,part of the aluminum-oxygen tetrahedron replaced the silicon-oxygen tetrahedron,causing the polycondensation reaction between geopolymers and increasing the strength of *** leaching toxicity test results show that the geopolymer has a good solid sealing effect on heavy metal *** preparation of geopolymer from phosphate tailings is an important way to alleviate the storage pressure and realize the resource utilization of phosphate tailings.

关键词： phosphate tailing geopolymer interface state toxicity leaching

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北宋漕运影响下的钞盐法变革

云南社会科学 2024年第4期 153-162页

作者：谢祺华中师范大学历史文化学院

北宋将漕运与淮盐政结合在一起,漕船返程运输食盐销售,以其收入补贴漕运,形成互利的关系,但是北宋盐政的衰败与变革也与漕运出现的问题有关。舟卒境遇低下、漕运官僚腐败、航运水利治理的不稳定都使漕运食盐不断被盗卖、运作效率逐渐低... 详细信息

北宋将漕运与淮盐政结合在一起,漕船返程运输食盐销售,以其收入补贴漕运,形成互利的关系,但是北宋盐政的衰败与变革也与漕运出现的问题有关。舟卒境遇低下、漕运官僚腐败、航运水利治理的不稳定都使漕运食盐不断被盗卖、运作效率逐渐低下、食盐运量不足、私盐泛滥、官盐品质低下等问题长期无法得到解决。而通商之议受到漕运系统官员出于自身财务利益立场的反对。北宋末的蔡京钞盐法改革,彻底将漕运与淮盐盐政切割,虽然造成了漕运的进一步衰落,但实现了比漕运更让朝廷满意的财政收入。这是因为钞盐法将官吏从食盐运销中剥离,漕运的诸多弊端不再直接作用于商人自负盈亏的运输,同时蔡京当局也极力保障运输的通畅和排除官吏对航运的干扰,使得钞盐法行之有效,并得以被南宋至清朝等后来的政权所继承,成为全国范围内最主流的盐政运销制度。

关键词：北宋漕运淮盐钞盐法官僚腐败蔡京

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The potential of Chinese herbal medicines in treating anxiety disorders

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Integrative Medicine Discovery 2024年第5期8卷 1-5页

作者： Jia-qi xie Jian-Mei Huang Can Wang School of Chinese Materia Medica Beijing University of Chinese MedicineBeijing 100029China

In recent years,there has not been much progress in developing anxiolytic *** the barriers are the lack of clarity on the pathogenesis of anxiety disorders,low product conversion rates for developing drugs targeting the receptors,and species *** scientists have focused on natural medicines,especially herbal medicines in traditional Chinese *** drugs with excellent anxiolytic activity are hoped to be found in herbal medicines with anxiolytic *** mini-review summarised three Chinese herbal medicines with anxiolytic effects and anxiolytic herbal formulas used in the traditional Chinese medicine *** key issues that block the development of new anxiolytic drugs are also *** hope to provide some ideas for researching and developing new anxiolytic drugs and studying anxiolytic components in traditional Chinese medicine.

关键词： traditional Chinese medicine anxiolytic drugs Chinese herbal medicines

Paradoxical herniation associated with hyperbaric oxygen therapy after decompressive craniectomy: A case report

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World Journal of Clinical Cases 2024年第10期12卷 1793-1798页

作者： Zhong-Xing Ye Xin-Xin Fu Yang-Zong Wu Ling Lin Liang-qi xie Yu-Ling Hu Yi Zhou Zhu-Gui You Hai Lin Department of Neurosurgery The Second People's Hospital of Fujian Province(The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine)Fuzhou 350001Fujian ProvinceChina Department of Neurosurgery The Second Hospital of LongyanLongyan 364000Fujian ProvinceChina Department of Neurosurgery Zhangping City HospitalLongyan 364400Fujian ProvinceChina

BACKGROUND Whether hyperbaric oxygen therapy(HBOT)can cause paradoxical herniation is still *** SUMMARY A 65-year-old patient who was comatose due to brain trauma underwent decompressive craniotomy and gradually regained consciousness after *** was administered 22 d after surgery due to speech *** herniation appeared on the second day after treatment,and the patient’s condition worsened after receiving mannitol treatment at the rehabilitation *** timely skull repair,the paradoxical herniation was resolved,and the patient regained consciousness and had a good recovery as observed at the follow-up *** Paradoxical herniation is rare and may be caused by ***,the underlying mechanism is unknown,and the understanding of this phenomenon is *** use of mannitol may worsen this *** skull repair can treat paradoxical herniation and prevent serious complications.

关键词： Decompressive craniectomy Hyperbaric oxygen therapy Mannitol Paradoxical herniation Case report

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基于关系图卷积网络的代码搜索方法

软件学报 2024年第6期35卷 2863-2879页

作者：周光有谢琦余啸华中师范大学计算机学院湖北武汉430079 武汉理工大学计算机与人工智能学院湖北武汉430070

代码搜索是当下自然语言处理和软件工程交叉领域的一个重要分支.开发高效的代码搜索算法能够显著提高代码重用的能力,从而有效提高软件开发人员的工作效率.代码搜索任务是以描述代码片段功能的自然语言作为输入,在海量代码库中搜索得到... 详细信息

代码搜索是当下自然语言处理和软件工程交叉领域的一个重要分支.开发高效的代码搜索算法能够显著提高代码重用的能力,从而有效提高软件开发人员的工作效率.代码搜索任务是以描述代码片段功能的自然语言作为输入,在海量代码库中搜索得到相关代码片段的过程.基于序列模型的代码搜索方法DeepCS虽然取得了很好的效果,但这种方法不能捕捉代码的深层语义.基于图嵌入的代码搜索方法GraphSearchNet能缓解这个问题,但没有对代码与文本进行细粒度匹配,也忽视了代码图和文本图的全局关系.为了解决以上局限性,提出基于关系图卷积网络的代码搜索方法,对构建的文本图和代码图编码,从节点层面对文本查询和代码片段进行细粒度匹配,并应用神经张量网络捕捉它们的全局关系.在两个公开数据集上的实验结果表明,所提方法比先进的基线模型DeepCS和GraphSearchNet搜索精度更高.

关键词：代码搜索关系图卷积网络细粒度匹配

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涡轮电力分布式推进设计参数优化选择分析

推进技术 2024年第1期45卷 31-44页

作者：谢琪安邓莉平吴虎西北工业大学动力与能源学院陕西西安710072

为研究涡轮电力分布式推进系统(Turbo-electric Distributed Propulsion system简称TeDP)设计参数的选择,基于部件法对整个TeDP系统建立设计点性能计算模型,推导了TeDP的有效功在涡轴尾喷管和风扇系统间的最佳分配关系。在此基础上,以EC... 详细信息

为研究涡轮电力分布式推进系统(Turbo-electric Distributed Propulsion system简称TeDP)设计参数的选择,基于部件法对整个TeDP系统建立设计点性能计算模型,推导了TeDP的有效功在涡轴尾喷管和风扇系统间的最佳分配关系。在此基础上,以ECO-150-300客机作为应用对象,采用差分进化算法,以设计巡航点的耗油率作为优化目标,对TeDP的循环参数进行优化选择;然后对优化后的循环参数进行分析,并将优化结果与大涵道比涡扇发动机作对比。结果表明,优化后的巡航耗油率比原系统下降了7.68%;存在最佳风扇设计压比使风扇涵道效率最高,最佳设计压比与涵道的总压损失有关;TeDP系统的耗油率对电部件传输效率、自由涡轮效率和风扇绝热效率最为敏感,当效率分别降低1.0%时,耗油率分别上升1.0%,0.94%和0.85%;与涵道比为20的齿轮传动涡扇发动机相比,当电部件传输效率大于0.95时,TeDP才显现经济优势,当电部件传输效率接近1时,TeDP耗油率下降了5.40%。

关键词：涡轮电力分布式推进循环参数差分进化算法优化耗油率

Association between tobacco exposure and bladder cancer recurrence:A systematic review and meta-analysis

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World Journal of Methodology 2024年第2期14卷 145-157页

作者： Lei Xiang qi-qi xie Si-Si Xu Wen-Jie Ruan Dong-Hui Xu Yao-Yao Gan Jia Zuo Wen-Jun Xu Zhi-Peng Li Department of Rehabilitation Medicine First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052Henan ProvinceChina School of Medicine Taizhou UniversityTaizhou 318000Zhejiang ProvinceChina

BACKGROUND However,the connection between smoking and the prognosis of patients with bladder cancer remains *** To determine whether smoking is linked to the recurrence and progression of bladder *** As of July 20,2022,relevant English-language research was identified by searching PubMed,the Web of Science,and the Cochrane *** pooled the available data from the included studies using a random effects *** analysis and sensitivity analysis were also *** A total of 12 studies were included in this *** combined analysis revealed that tobacco exposure was associated with a significantly greater recurrence rate than nonsmoking status[odd ratios(OR)=1.76,95%CI:1.84-2.93],and the progression of bladder cancer was significantly greater in smokers than in nonsmokers(OR=1.21,95%CI:1.02-1.44).Stratified analysis further revealed that current smokers were more likely to experience relapse than never-smokers were(OR=1.85,95%CI:1.11-3.07).Former smokers also had a greater risk of relapse than did never-smokers(OR=1.73,95%CI:1.09-2.73).Subgroup analysis indicated that non-Caucasians may be more susceptible to bladder cancer recurrence than Caucasians are(OR=2.13,95%CI:1.74-2.61).CONCLUSION This meta-analysis revealed that tobacco exposure may be a significant risk factor for both the recurrence and progression of bladder cancer.

关键词： Smoking Bladder Cancer Recurrence Progress

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稳定分析中滑动面构造方法分析

水力发电学报 2024年第7期43卷 73-84页

作者：介玉新王杨强周婷谢琪清华大学水圈科学与水利工程全国重点实验室北京100084 清华大学水利部水圈科学重点实验室北京100084 清华大学水利水电工程系北京100084

滑动面的构造方法是边坡稳定分析的关键课题之一。任意滑动面的构造比较复杂,基于Logistic函数积分等基函数构造的曲线可以代替传统的折线形滑动面,改善滑动面的光滑性,也有利于减少其自由度。对基于基函数的滑动面构造方法进行梳理,将... 详细信息

滑动面的构造方法是边坡稳定分析的关键课题之一。任意滑动面的构造比较复杂,基于Logistic函数积分等基函数构造的曲线可以代替传统的折线形滑动面,改善滑动面的光滑性,也有利于减少其自由度。对基于基函数的滑动面构造方法进行梳理,将其划分为基于连续函数叠加的构造方法和基于积分运算的构造方法。重点对Logistic函数及其积分的性质进行分析,得到了不同参数对曲线形态的影响规律,从而缩小了相关参数的取值范围,为减小滑动面自由度提供了依据。在此基础上也给出了一种确定给定滑动面参数初值的方法。针对两个边坡算例的计算表明,所提出的方法能够满足边坡稳定分析的要求。

关键词：边坡滑动面安全系数 Logistic曲线自由度

迎来送往:清代前中期云南督抚的外国贡使接待管理

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红河学院学报 2024年第2期22卷 101-106页

作者：谢祺华中师范大学历史文化学院湖北武汉430079

通过对清代云南督抚管理下的对外国贡使的接待的历史进行梳理,可以看到接待殷勤周到,呈现了云南作为对东南亚西部国家外交窗口的重要作用和以云南官民为重要桥梁的中外睦邻友好的交往历史。也突显了云南在接待工作中各民族土司、土兵、... 详细信息

通过对清代云南督抚管理下的对外国贡使的接待的历史进行梳理,可以看到接待殷勤周到,呈现了云南作为对东南亚西部国家外交窗口的重要作用和以云南官民为重要桥梁的中外睦邻友好的交往历史。也突显了云南在接待工作中各民族土司、土兵、翻译共同加入国家外事工作的特点。同时发现,云南督抚在对外国使者进行接待的过程中,包含了诸多关于收集东南亚外国形势资讯、了解外国文化、甄别外国外交意图等目的,为外交、边防、边疆治理做出了积极贡献,这也是云南清代对外接待工作的另一个重要特点。

关键词：清代云南总督巡抚外国贡使接待