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改进关键链技术在泵站施工进度管控中的应用

中国农村水利水电 2024年第7期 249-254页

作者：刘永强孙昊聪朱斌杨志帅河海大学江苏南京210098 中国电建集团西北勘测设计研究院有限公司陕西西安710065 中禹云科(南京)工程科技有限公司江苏南京210013

为解决工程施工进度管控关键链技术应用中存在的缓冲区计算方法粗略,缓冲区监控方法脱离实际施工的问题,通过引入风险控制系数、资源影响系数、工序复杂系数、工序位置系数以及环境系数五个指标,运用层次分析法和CRITIC(Criteria Import... 详细信息

为解决工程施工进度管控关键链技术应用中存在的缓冲区计算方法粗略,缓冲区监控方法脱离实际施工的问题,通过引入风险控制系数、资源影响系数、工序复杂系数、工序位置系数以及环境系数五个指标,运用层次分析法和CRITIC(Criteria Importance Through Intercriteria Correlation)客观赋权法构建缓冲区优化模型;将缓冲区消耗率和项目工作链完成进度百分比相关联,建立了缓冲区动态监控机制。运用缓冲区优化模型和动态监控机制改进关键链技术,将改进关键链技术应用于泵站工程施工进度管理。结果表明:该方法所得到的缓冲区尺寸较为合理,可以实现缩短计划工期和实现缓冲区动态监控,为水利工程施工进度管控提供借鉴。

关键词：关键链法项目进度管理泵站工程

基于智能遥感识别的矿山水工环灾害数据采集系统

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世界有色金属 2024年第2期 179-181页

作者：宫磊刘永强吴路强甘肃省地质矿产勘查开发局第一地质矿产勘查院甘肃天水741020

矿山水工环地质环境较为复杂,由于地势特点等因素导致其灾害较难察觉。为了能够实现对矿山水工环灾害的有效识别与控制,推进矿山水工环监测工作高效开展,本文专门针对智能遥感识别技术在矿山水工环灾害数据采集系统中的应用进行研究,从... 详细信息

矿山水工环地质环境较为复杂,由于地势特点等因素导致其灾害较难察觉。为了能够实现对矿山水工环灾害的有效识别与控制,推进矿山水工环监测工作高效开展,本文专门针对智能遥感识别技术在矿山水工环灾害数据采集系统中的应用进行研究,从而提升数据采集的效率和准确性。充分利用智能遥感识别技术的优势,便于工作人员掌握水工环灾害的实际情况,大大降低水工环灾害发生的概率。通过本文希望能够为监测预防矿山水工环灾害提供有效建议,助力工作顺利展开。

关键词：智能遥感识别矿山水工环灾害数据采集系统

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水利水电工程中施工技术及质量管理措施

工程建设与设计 2024年第12期 239-241页

作者：刘永强李俊成云南建投第一水利水电建设有限公司昆明650500

探讨了水利水电工程中施工技术的应用,包括无人机和遥感技术在施工监测中的运用,3D打印技术在结构构件制造中的应用,智能传感器与物联网在设备监控中的应用,预制及模块化施工技术的使用,分析了水利水电工程中实施的质量管理策略,涵盖了... 详细信息

探讨了水利水电工程中施工技术的应用,包括无人机和遥感技术在施工监测中的运用,3D打印技术在结构构件制造中的应用,智能传感器与物联网在设备监控中的应用,预制及模块化施工技术的使用,分析了水利水电工程中实施的质量管理策略,涵盖了质量规划与标准制定、供应商和材料质量控制、施工过程监控与检测、质量问题的预防和纠正措施、员工培训和质量意识提升、质量审查和内部审核,以及质量记录和文档管理。

关键词：水利水电工程施工技术管理措施

发酵五味子药渣对山西黑猪生长性能、血清生化指标及免疫功能的影响

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饲料研究 2024年第11期47卷 30-33页

作者：赵先萍郝松华赵益荣王淑芳隋志文李涌杜红阳刘永强山西省畜牧兽医学校山西太原030024

试验旨在研究发酵五味子药渣对山西黑猪生长性能、血清生化指标及免疫功能的影响。选用60头28日龄山西黑猪断奶仔猪,随机分为4组,每组3个重复,每个重复5头断奶仔猪。各组分别在基础饲粮中添加0(对照组)、0.1%(试验Ⅰ组)、0.2%(试验Ⅱ组)... 详细信息

试验旨在研究发酵五味子药渣对山西黑猪生长性能、血清生化指标及免疫功能的影响。选用60头28日龄山西黑猪断奶仔猪,随机分为4组,每组3个重复,每个重复5头断奶仔猪。各组分别在基础饲粮中添加0(对照组)、0.1%(试验Ⅰ组)、0.2%(试验Ⅱ组)和0.3%(试验Ⅲ组)的发酵五味子药渣。预试期7 d,正式试验期21 d。结果显示:与对照组相比,试验Ⅱ组和试验Ⅲ组仔猪的平均日增重显著升高(P<0.05),料重比显著降低(P<0.05),各试验组仔猪的腹泻率显著降低(P<0.05);各试验组仔猪血清中的白蛋白、总蛋白和血糖含量显著升高(P<0.05),谷草转氨酶活性显著降低(P<0.05);试验Ⅱ组和试验Ⅲ组血清中球蛋白含量显著升高(P<0.05),尿素氮含量显著降低(P<0.05);各试验组血清中免疫球蛋白G、免疫球蛋白M和白细胞介素-2含量显著升高(P<0.05),试验Ⅱ组和试验Ⅲ组免疫球蛋白A含量显著升高(P<0.05)。研究表明,发酵五味子药渣能够有效改善山西黑猪仔猪的生长性能,降低腹泻率,改善血清生化指标,增强免疫力,以0.3%添加量效果最好。

关键词：五味子药渣山西黑猪生长性能血清生化指标免疫功能

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Broadband high-efficiency plasmonic metalens with negative dispersion characteristic

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Photonics Research 2024年第4期12卷 813-820页

作者： yong-qiang liu yong ZHU HONGCHENG YIN JINHAI SUN YAN WANG yongXING CHE National Key Laboratory of Scattering and Radiation Beijing 100854China

Controlling the dispersion characteristic of metasurfaces(or metalenses) along a broad bandwidth is of great importance to develop high-performance broadband metadevices. Different from traditional lenses that rely on the material refractive index along the light trajectory, metasurfaces or metalenses provide a new regime of dispersion control via a sub-wavelength metastructure, which is known as negative chromatic ***, broadband metalenses design with high-performance focusing especially with a reduced device dimension is a significant challenge in society. Here, we design, fabricate, and demonstrate a broadband highperformance diffractive-type plasmonic metalens based on a circular split-ring resonator metasurface with a relative working bandwidth of 28.6%. The metalens thickness is only 0.09λ0(λ0is at the central wavelength),which is much thinner than previous broadband all-dielectric metalenses. The full-wave simulation results show that both high transmissive efficiency above 80%(the maximum is even above 90%) and high average focusing efficiency above 45%(the maximum is 56%) are achieved within the entire working bandwidth of 9–12 ***, an average high numerical aperture of 0.7(NA = 0.7) of high-efficiency microwave metalens is obtained in the simulations. The broadband high-performance metalens is also fabricated and experimental measurements verify its much higher average focusing efficiency of 55%(the maximum is above 65% within the broad bandwidth) and a moderate high NA of 0.6. The proposed plasmonic metalens can facilitate the development of wavelength-dependent broadband diffractive devices and is also meaningful to further studies on arbitrary dispersion control in diffractive optics based on plasmonic metasurfaces.

关键词： resonator dispersion high

短小芽孢杆菌(GXUN613L)对银鲑生长、血清生化指标、抗氧化能力及肠道健康的影响

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饲料研究 2024年第8期47卷 66-71页

作者：梁俊杰杨秋月许剑刘永强童潼王佳婧徐粒潇张琴广西民族大学海洋与生物技术学院广西多糖材料与改性重点实验室广西民族大学海洋生物资源保护与利用重点实验室广西南宁530006

试验旨在探讨短小芽孢杆菌(GXUN613L)对银鲑生长性能、血清生化指标、抗氧化能力及肠道健康的影响。挑选240尾初始体质量为(130.2±10.1) g的银鲑,随机分为4组,每组3个重复,每个重复20尾鱼。CK组、LL组、LM组和LH组分别在基础饲料中添加... 详细信息

试验旨在探讨短小芽孢杆菌(GXUN613L)对银鲑生长性能、血清生化指标、抗氧化能力及肠道健康的影响。挑选240尾初始体质量为(130.2±10.1) g的银鲑,随机分为4组,每组3个重复,每个重复20尾鱼。CK组、LL组、LM组和LH组分别在基础饲料中添加0、2×10^(7)、4×10^(9)、8×10^(11) CFU/g的短小芽孢杆菌(GXUN613L)。试验期6 w。结果显示,LL组和LM组银鲑的增重率、特定生长率显著高于对照组(P<0.05);LM组银鲑的蛋白质效率显著高于对照组(P<0.05),饲料系数显著低于CK组(P<0.05)。LL组、LM组和LH组银鲑血清中的总蛋白、白蛋白和总胆固醇含量均显著高于CK组(P<0.05),LM组银鲑血清中葡萄糖含量和碱性磷酸酶活性显著高于CK组(P<0.05)。LM组银鲑肝脏的总抗氧化能力、过氧化氢酶、超氧化物歧化酶及谷胱甘肽过氧化物酶活性显著高于CK组(P<0.05)。LM组银鲑前肠、后肠肌层厚度及绒毛高度显著高于CK组(P<0.05),肠道微生物多样性更好。研究表明,饲料中添加短小芽孢杆菌(GXUN613L)可以促进银鲑生长,改善银鲑血清生化指标及肠道健康,提高银鲑的抗氧化能力,其适宜添加量为4×109 CFU/g。

关键词：短小芽孢杆菌银鲑生长性能血清生化指标抗氧化能力肠道健康

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Triclosan-conjugated,Lipase-responsive Polymeric Micelles for Eradication of Staphylococcal Biofilms

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Chinese Journal of Polymer Science 2024年第6期42卷 718-728页

作者： Yan-qiang Huang Yuan-Feng Li yong liu Lin-Qi Shi Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance Youjiang Medical University for NationalitiesBaise533000China Translational Medicine Laboratory the First Affiliated Hospital of Wenzhou Medical UniversityWenzhou325035China Wenzhou Institute University of Chinese Academy of SciencesWenzhou325001China State Key Laboratory of Medicinal Chemical Biology Key Laboratory of Functional Polymer Materials of Ministry of Educationand Institute of Polymer ChemistryCollege of ChemistryNankai UniversityTianjin300071China

Bacterial biofilms present a significant challenge in treating drug-resistant infections,necessitating the development of innovative *** this study,we introduce triclosan-conjugated,lipase-responsive polymeric micelles designed to exploit biofilm properties and serve as a responsive drug delivery *** micelles were created using an amphiphilic block polymer synthesized via ring-opening polymerization ofε-caprolactone(CL)and triclosan-containing cyclic trimethylene carbonate(MTC-Tri).Poly(ethylene glycol)(PEG-OH)acted as the macro-initiator,resulting in micelles with a PEG shell that facilitated their penetration into bacterial *** important advantage of our micelles lies in their interaction with local bacterial lipases within *** lipases triggered rapid micelle degradation,releasing triclosan in a controlled *** liberated triclosan effectively eliminated bacteria embedded in the ***,the triclosan-conjugated micelles displayed minimal toxicity to murine fibroblasts,indicating their biocompatibility and *** finding emphasizes the potential application of these micelles in combatting drug resistance observed in bacterial *** triclosan-conjugated,lipase-responsive polymeric micelles exhibit promising characteristics for addressing drug resistance in bacterial *** harnessing biofilm properties and implementing a responsive drug delivery system,we seek to provide an effective solution in the fight against drug-resistant bacteria.

关键词： Self-assembly Polymer prodrug Ring-opening polymerization Biofilm eradication Cytotoxicity

Irreducible Representations of GL_(n)(C)of Minimal Gelfand-Kirillov Dimension

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Acta Mathematica Sinica,English Series 2024年第3期40卷 639-657页

作者： Zhan qiang BAI Yang Yang CHEN Dong Wen liu Bin yong SUN School of Mathematical Sciences Soochow UniversitySuzhou 215006P.R.China School of Sciences JiangnanUniversityWui214122P.R.China School of Mathematical Sciences Zhejiang UniversityHangzhou 310058P.R.China Institute for Advanced Study in Mathematics Zhejiang UniversityHangzhou 310058P.R.China

In this article,by studying the Bernstein degrees and Goldie rank polynomials,we es-tablish a comparison between the irreducible representations of G=GL_(n)(C)possessing the minimal Gelfand-Kirillov dimension and those induced from finite-dimensional representations of the maximal parabolic subgroup of G of type(n-1,1).We give the transition matrix between the two bases for the corresponding coherent families.

关键词： Bernstein degree coherent continuation Gelfand-Kirillov dimension

Effect of MgO-Cr_(2)O_(3) and Mg0-MgAl_(2)0_(4)-based refractories on refractory-steel interface reaction and cleanliness of pipeline steel

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Journal of Iron and Steel Research(International) 2024年第4期31卷 849-860页

作者： Guang-mei Yang Cheng Yuan Chang liu qiang Wang Guang-qiang Li yong-shun Zou Ao Huang The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081HubeiChina

The interaction of MgO-MgAl_(2)O_(4)-based and MgO-Cr_(2)O_(3)-based refractories with X70 molten steel was studied by immersion experiments at 1560℃.The effects of immersion time(30 and 60 min)on the contents of total oxygen(TO),Al,Nb,Si,Mn,and Cr as well as the composition,number density,and size distribution of inclusions in the molten steel were *** influence of the penetration and erosion degree of the molten steel to the refractory on the steel-refractory interface layer was *** results show that,at 1560℃,the MgO-MgAl_(2)O_(4)-based refractory can better control the contents of TO and the composition of molten steel compared with the MgO-Cr_(2)O_(3)-based *** TO content is only 16×10^(-4) wt.%in the molten steel after reacted with the Mg0-MgAl_(2)O_(4)-based refractory at the end point of refining,4 accounting for 11.5%of that reacted with the MgO-Cr_(2)O_(3)-based refractory(139×10^(-4) wt.%).The number density of inclusions is only 14 mm^(-2),and the average size ofinclusions is only 1.31μm,with thelargest proportion of inclusions in 1-2μm(70%).The Al_(2)O_(3)-MnS-CaO complex inclusions in the original steel changed to complex inclusions dominated by Cr-Nb-Mn-S-O and ***_(2)O_(3),corresponding to the MgO-Cr_(2)O_(3)-based and MgO-MgAl_(2)O_(4)-based refractories,*** ***_(2)O_(3) layer was formed at the reaction interface between MgO-MgAl_(2)O_(4)-based refractory and molten steel,which is helpful to restrict the erosion of refractories and the pollution of molten *** damage mechanism of the MgO-Cr_(2)O_(3)-based refractory is mainly permeation and chemical reaction,while the damage of the MgO-MgAl_(2)O_(4)-based refractory is mainlyscouring erosion.

关键词： MgO-Cr_(2)O_(3)-based refractory MgO-MgAl O_(4)-based refractory Nonmetallic inclusion Erosion interface layer Steel penetration