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含抽水蓄能电站与分布式能源的输电网联合规划多阶段模型

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电工技术 2024年第4期 39-44页

作者：吴伟杰李逸欣林勇张伊宁陈逸鹏广东电网有限责任公司电网规划研究中心广东广州510000 中国能源建设集团广东省电力设计研究院有限公司广东广州510663

虽然能源消耗量仍在增加,但由于电力系统的管制放松、需求响应方案的应用、微电网和智能电网的实施等,系统峰值负荷正在下降,作为公共实体的输电系统运营商必须加强输电系统以保持电力系统的可靠性。为此,提出了一种含抽水蓄能电站与分... 详细信息

虽然能源消耗量仍在增加,但由于电力系统的管制放松、需求响应方案的应用、微电网和智能电网的实施等,系统峰值负荷正在下降,作为公共实体的输电系统运营商必须加强输电系统以保持电力系统的可靠性。为此,提出了一种含抽水蓄能电站与分布式能源的输电网联合规划双层模型。其中,上层从输电系统运营商的角度出发,最大限度地降低线路投资成本和从传统发电机和配电系统购买能源的成本,同时确保分布式能源投资的给定回报率;下层模拟市场清算以找到节点价格,用于计算配电商的利润和购买能源的成本。通过强对偶技术、big-M方法和互补松弛条件,将所提出的模型转化为一个单层混合整数线性规划问题,并在IEEE RTS-24母线测试系统中验证了其有效性。

关键词：输电系统分布式能源双层模型混合整数线性规划

液态深层发酵松杉灵芝提取麦角硫因的技术研究

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现代食品 2024年第7期30卷 78-80,86页

作者：康梦媛任芮瑶刘月含李意心李芯悦杨萍吉林农业科技学院食品科学与营养工程学院吉林吉林132101

本文通过单因素以及正交试验确定液态深层发酵松杉灵芝提取麦角硫因的提取条件。结果表明,最佳提取条件为最大允许装液量的60%,转速200 r·min^(-1),发酵液pH=6,发酵温度30℃,发酵通气量0.6 L·min^(-1)。

关键词：松杉灵芝麦角硫因液态深层发酵

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Predesigned covalent organic framework with sulfur coordination: Anchoring Au nanoparticles for sensitive colorimetric detection of Hg(Ⅱ)

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Chinese Chemical Letters 2024年第5期35卷 392-396页

作者： Guorong li Yijing Wu Chao Zhong yixin Yang Zian lin Ministry of Education Key Laboratory of Analytical Science for Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food SafetyCollege of ChemistryFuzhou UniversityFuzhou 350108China

Targeted construction of new covalent organic frameworks(COFs)with specific purposes and rationalities to build colorimetric assay platform for environmental pollutant monitoring have attracted increasing ***,it is still challenging due to lack of available coordination sites inside COFs pores and only a slight bonding ability for anchoring *** this work,a two-dimensional(2D)COFs(termed as Tz-COF)with high crystallinity,excellent chemical stability,and abundant sulfur coordination in its skeletons was synthesized and used for the confined growth of Au *** was found that the Au NPs showed significant dispersibility for the support of *** proposed Tz-COF@Au NPs possessed outstanding Hg^(2+)-activated peroxidase-like activity benefited from physicochemical properties of gold amalgam and synergistic effect between COFs and Au NPs to oxidize chromogenic *** on highly efficient activity and distinctive color evolution,the strategy for detecting Hg^(2+)was developed and successfully applied to determine the content of Hg^(2+)in real environmental *** work manifests that a potential strategy to establish a colorimetric assay platform for environmental pollutant monitoring based on the targeted manufacturing of novel COFs with specific functions.

关键词： Covalent organic frameworks Thiazole Sulfur coordination Au nanoparticles Hg^(2+)-activated peroxidase-like activity

含抽水蓄能电站的输电线路扩展规划启发式算法

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电工技术 2024年第3期 12-15页

作者：李逸欣吴伟杰左郑敏郑敏嘉陈逸鹏广东电网有限责任公司电网规划研究中心广东广州510000 中国能源建设集团广东省电力设计研究院有限公司广东广州510663

针对含抽水蓄能电站的输电线路规划中存在的非线性和非凸问题,提出了一种基于MILP的输电线路扩展规划启发式算法。首先将混合整数线性问题(MILP)传输扩展规划(TEP)模型的精确解与元启发式算法的随机解相结合;然后引入了基于MILP的启发(M... 详细信息

针对含抽水蓄能电站的输电线路规划中存在的非线性和非凸问题,提出了一种基于MILP的输电线路扩展规划启发式算法。首先将混合整数线性问题(MILP)传输扩展规划(TEP)模型的精确解与元启发式算法的随机解相结合;然后引入了基于MILP的启发(MBH)算法来解决线性近似和元启发式过程中出现的问题;最后在IEEE RTS-24节点测试系统的单阶段TEP验证了所提出算法的有效性。

关键词：输电扩展规划元启发式混合整数线性问题线性近似

Effects of antioxidant‑rich Lactiplantibacillus plantarum inoculated alfalfa silage on rumen fermentation, antioxidant and immunity status, and mammary gland gene expression in dairy goats

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Journal of Animal Science and Biotechnology 2024年第3期15卷 1227-1240页

作者： yixin Zhang Samaila Usman Qiang li Fuhou li Xia Zhang Luiz Gustavo Nussio Xusheng Guo State Key Laboratory of Grassland Agro‑ecosystems School of Life SciencesLanzhou UniversityLanzhou 730000PR China Probiotics and life Health Institute Lanzhou UniversityLanzhou 730000PR China Probiotics and Biological Feed Research Centre Lanzhou UniversityLanzhou 730000PR China Department of Animal Science Luiz de Queiroz College of AgricultureUniversity of Sao PauloPiracicaba 13418‑900Brazil

Background Milk synthesis in lactating animals demands high energy metabolism,which results in an increased production of reactive oxygen metabolites(ROM)causing an imbalance between oxidants and antioxidants thereby inducing oxidative stress(OS)on the *** mitigate OS and postpartum disorders in dairy goats and gain insight into the impact of dietary choices on redox status during lactation,a feeding trial was conducted using alfalfa silage inoculated with a high-antioxidant strain of Lactiplantibacillus *** Twenty-four Guanzhong dairy goats(38.1±1.20 kg)were randomly assigned to two dietary treatments:one containing silage inoculated with *** MTD/1(RSMTD-1),and the other containing silage inoculated with high antioxidant activity *** 24-7(ES24-7).Results ES24-7-inoculated silage exhibited better fermentation quality and antioxidant activity compared to *** ES24-7 diet elevated the total antioxidant capacity(T-AOC),superoxide dismutase(SOD),glutathione peroxi-dase(GSH-Px),and catalase(CAT)activities in milk,serum,and feces of lactating goats(with the exception of T-AOC in milk).Additionally,the diet containing ES24-7 inoculated silage enhanced casein yield,milk free fatty acid(FFA)content,and vitamin A level in the goats’***,an increase of immunoglobulin(Ig)A,IgG,IgM,inter-leukin(IL)-4,and IL-10 concentrations were observed,coupled with a reduction in IL-1β,IL-2,IL-6,interferon(IFN)-γ,and tumor necrosis factor(TNF)-αconcentrations in the serum of lactating goats fed *** concentrations of total volatile fatty acid(VFA),acetate,and propionate were observed in the rumen fluid of dairy goats fed ES24-7 inoculated ***,the diet containing ES24-7 inoculated silage significantly upregulated the expression of nuclear factor erythroid 2 like 2(NFE2L2),beta-carotene oxygenase 1(BCO1),SOD1,SOD2,SOD3,GPX2,CAT,glu-tathione-disulfide reductase(GSR),and heme oxygenase 1(HMOX1)genes in the mammary gland,

关键词： Alfalfa silage Antioxidant activity Gene expression Goats Immunity Lactation

Effect of kerosene injection states on mixing and combustion characteristics in a cavity-based supersonic combustor

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Chinese Journal of Aeronautics 2024年第4期37卷 308-320页

作者： Xu liU Peibo li Fei li Hongbo WANG Mingbo SUN Chao WANG yixin YANG Dapeng XIONG Yanan WANG Science and Technology on Scramjet Laboratory College of Aerospace Science and EngineeringNational University of Defense TechnologyChangsha 410073China

It has been found that the static pressure distribution along the axial direction of liquid kerosene is lower than that of the gaseous kerosene under the same flow condition and overall equivalent ratio from previous *** further investigate this phenomenon,a compressible two-phase parallel simulation method is utilized to analyze the mixing and combustion characteristics of gaseous and liquid kerosene jets in a cavity-based supersonic *** numerical results are consistent with the experiments and demonstrate that gaseous injection leads to a cavity shear layer that dives deeper into the cavity,forming two recirculation zones in the front and rear of the *** contrast,the cavity shear layer is closer to the mainstream during liquid injection,and only a large recirculation zone is formed in the rear of the *** a result of the cavity shear layer and the recirculating flow,the fuel vapor of gaseous injection accumulates in the front of the cavity,while for the liquid injection,the fuel vapor disperses in the cavity,cavity shear layer,and the region above,and the rear of the cavity has a higher fuel vapor concentration than the *** unique fuel distribution causes the combustion area to be concentrated in the cavity during the gaseous injection but dispersed inside and downstream of the cavity during the liquid *** a result,forming a thermal throat under the same conditions is more challenging during liquid injection,and the generated static pressure distribution is lower than that during the gaseous injection.

关键词： Gaseous injection liquid injection Mixing process Combustion Supersonic flow

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公路隧道火灾应急技术研究现状与展望

隧道与地下工程灾害防治 2024年第2期6卷 13-24+65页

作者：郭志国李益锌周令剑张一恒叶瑀伋江西理工大学应急管理与安全工程学院中国矿业大学安全工程学院赣州市工业安全与应急技术重点实验室

为给我国隧道火灾安全的科学应急提供参考依据，对公路隧道火灾烟气行为特征、隧道火灾预测技术、隧道火灾探测与预警技术以及隧道火灾控制技术四方面的研究现状与进展进行系统阐述，并提出未来发展方向：探明复杂因素耦合驱动下公路隧... 详细信息

为给我国隧道火灾安全的科学应急提供参考依据，对公路隧道火灾烟气行为特征、隧道火灾预测技术、隧道火灾探测与预警技术以及隧道火灾控制技术四方面的研究现状与进展进行系统阐述，并提出未来发展方向：探明复杂因素耦合驱动下公路隧道多火源燃烧行为和烟气蔓延特性；基于深度学习、AI数据和大数据分析等先进算法与技术，开发数字化与智慧化隧道火灾预测技术；采用互联网、物联网和云计算等新一代信息技术，实现隧道火灾快速实时监测与智能感知提前预警；研制集火烟消灭材料、智慧应急装置、多功能通风防排烟技术和智能疏散为一体的隧道火灾综合控制技术；建立公路隧道火灾全过程全面-高效-协同的应急技术体系。

关键词：公路隧道火灾烟气复杂因素耦合智能感知应急技术体系数字预测

Laser-upgraded coal tar for smart pavements in road and bridge monitoring applications

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Microsystems & Nanoengineering 2024年第2期10卷 231-239页

作者： Jincai Huang Man Zhang Haoyun He Qingang li yixin Zhao Qiulin Tan Xining Zang Department of Mechanical Engineering Tsinghua UniversityBeijing100084China State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment Department of Mechanical EngineeringTsinghua UniversityBeijing100084China Key Laboratory for Advanced Materials Processing Technology Ministry of EducationBeijing100084China Science and Technology on Electronic Test and Measurement Laboratory North University of ChinaTaiyuan030051China School of Energy and Mining Engineering China University of Mining and Technology(Beijing)Beijing100083China

The implementation of an intelligent road network system requires many sensors for acquiring data from roads,bridges,and vehicles,thereby enabling comprehensive monitoring and regulation of road *** this large number of required sensors,the sensors must be cost-effective,dependable,and environmentally ***,we show a laser upgrading strategy for coal tar,a low-value byproduct of coal distillation,to manufacture flexible strain-gauge sensors with maximum gauge factors of 15.20 and 254.17 for tension and compression ***,we completely designed the supporting processes of sensor placement,data acquisition,processing,wireless communication,and information decoding to demonstrate the application of our sensors in traffic and bridge vibration *** novel strategy of using lasers to upgrade coal tar for use as a sensor not only achieves the goal of turning waste into a resource but also provides an approach to satisfy large-scale application requirements for enabling intelligent road networks.

关键词： gauge bridge smart

转化生长因子β信号通路与非综合征型唇腭裂发病风险的基因-基因及基因-环境交互作用

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北京大学学报（医学版） 2024年第3期56卷 384-389页

作者：侯天姣周治波王竹青王梦莹王斯悦彭和香郭煌达李奕昕章涵宇秦雪英武轶群郑鸿尘李静吴涛朱洪平北京大学公共卫生学院流行病与卫生统计学系北京100191 重大疾病流行病学教育部重点实验室(北京大学) 北京100191 北京大学口腔医院·口腔医院口腔颌面外科国家口腔医学中心国家口腔疾病临床医学研究中心口腔生物材料和数字诊疗装备国家工程研究中心口腔数字医学北京市重点实验室国家卫生健康委员会口腔医学计算机应用工程技术研究中心国家药品监督管理局口腔材料重点实验室北京100081 北京大学公共卫生学院营养与食品卫生学系北京100191 北京大学口腔医院·口腔医院儿童口腔科国家口腔医学中心国家口腔疾病临床医学研究中心口腔生物材料和数字诊疗装备国家工程研究中心口腔数字医学北京市重点实验室国家卫生健康委员会口腔医学计算机应用工程技术研究中心国家药品监督管理局口腔材料重点实验室北京100081

目的:探索亚裔人群中转化生长因子β(transforming growth factor-β,TGF-β)信号通路基因多态性与非综合征型唇裂合并或不合并腭裂(non-syndromic cleft lip with or without cleft palate,NSCL/P)的关联及可能存在的基因-基因、基因-... 详细信息

目的:探索亚裔人群中转化生长因子β(transforming growth factor-β,TGF-β)信号通路基因多态性与非综合征型唇裂合并或不合并腭裂(non-syndromic cleft lip with or without cleft palate,NSCL/P)的关联及可能存在的基因-基因、基因-环境交互作用。方法:选取1038个NSCL/P核心家系作为研究对象。对TGF-β信号通路上的10个基因的343个单核苷酸多态性(single nucleotide polymorphism,SNP)位点进行了传递不平衡检验(transmission disequilibrium test,TDT),采用条件Logistic回归模型进行基因-基因交互作用分析和基因-环境交互作用分析。研究收集的环境因素包括患儿母亲孕期吸烟、被动吸烟、乙醇摄入量以及维生素使用情况。由于患儿母亲孕期吸烟和饮酒暴露率较低(<3%),因此,仅对母亲孕期被动吸烟及补充多种维生素这两个环境因素与基因之间的交互作用进行了分析。采用Bonferroni法对结果进行多重检验校正,显著性的阈值设置为P=1.46×10-4。结果:共有4个基因的23个SNP位点与NSCL/P之间存在关联(P<0.05),但经过Bonferroni多重检验校正后,这些关联均未达到统计学显著性水平。经过Bonferroni多重检验校正之后,6对SNP[rs4939874(SMAD2)与rs1864615(TGFBR2),rs2796813(TGFB2)与rs2132298(TGFBR2),rs4147358(SMAD3)与rs1346907(TGFBR2),rs4939874(SMAD2)与rs1019855(TGFBR2),rs4939874(SMAD2)与rs12490466(TGFBR2),以及rs2009112(TGFB2)与rs4075748(TGFBR2)]存在显著的统计学交互作用(P<1.46×10-4),基因-环境交互作用的分析没有达到多重检验校正阈值的显著结果。结论:未发现TGF-β通路基因多态性与NSCL/P的关联,该通路上部分基因可能通过基因-基因交互作用影响NSCL/P的发病风险。未来仍需其他独立研究的证据支持,以进一步的探索其中潜在的生物学机制。

关键词：非综合征型唇腭裂转化生长因子β信号通路全基因组关联研究核心家系

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