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工程建设与设计 2024年第9期 203-205页

作者：杨昊文湖南省交通规划勘察设计院有限公司长沙410203

阐述软土路基的危害,分析公路施工中软土路基施工技术的类型,如砂垫层处理技术、水泥搅拌桩技术、强力夯实技术,结合工程实例探讨公路施工中软土路基施工技术的具体实践要点和措施,如机具选择、技术参数及施工工艺等。

关键词：公路施工软土路基施工技术

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居住区园林景观设计原则及发展趋势

佛山陶瓷 2024年第8期34卷 173-175页

作者：杨皓文中铁第五勘察设计院集团有限公司北京102600

随着城市化进程的加快和人们生活水平的提高,居住区园林景观设计日益成为关注焦点。本文详细介绍了位于城市新兴轴心的英式庭院项目的现状与规划概况。该项目覆盖211990平方米,定位为高端居住社区,包含四个高层住宅组团(A、B、C、D区)... 详细信息

随着城市化进程的加快和人们生活水平的提高,居住区园林景观设计日益成为关注焦点。本文详细介绍了位于城市新兴轴心的英式庭院项目的现状与规划概况。该项目覆盖211990平方米,定位为高端居住社区,包含四个高层住宅组团(A、B、C、D区)。在设计上,项目突出了对高品质生活的追求,确保容积率控制在3.0以内,绿化率的要求高达30%以上,这些规划参数在图1中有详尽展示。当前,该社区正处于建设的关键阶段,住宅与地下停车场的主体结构已经基本完工,而园林景观和道路建设即将启动。项目在施工进度上符合预期,可为居民提供一个既舒适又绿色的居住环境。

关键词：园林景观设计设计原则发展趋势

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制备工艺对Cu-15Ni-8Sn合金晶粒特征和力学性能的影响

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材料热处理学报 2024年第4期45卷 78-86页

作者：杨文豪周延军宋克兴杨冉杨少丹郁炎陈纪东周菲江浩刘东东姜凯旋黄宽河南科技大学材料科学与工程学院河南洛阳471023 河南省科学院材料研究所河南郑州450046 河南科技大学医学技术与工程学院河南洛阳471023 郑州大学材料科学与工程学院河南郑州450001 中国船舶重工集团公司第七二五研究所河南洛阳471023 博威合金材料股份有限公司浙江宁波315000

对比了Cu-15Ni-8Sn合金铸态、均匀化退火态(850℃×8 h)、锻造态、固溶态(840℃×1 h)和时效态(400℃×6 h)的硬度、强度和伸长率变化规律,分析了不同工艺状态下合金的显微组织和断口形貌。结果表明:铸态合金的组织为发达的树枝晶;经均... 详细信息

对比了Cu-15Ni-8Sn合金铸态、均匀化退火态(850℃×8 h)、锻造态、固溶态(840℃×1 h)和时效态(400℃×6 h)的硬度、强度和伸长率变化规律,分析了不同工艺状态下合金的显微组织和断口形貌。结果表明:铸态合金的组织为发达的树枝晶;经均匀化退火后,枝晶组织消失,层片状组织完全溶于铜基体;均匀化退火态合金经锻造后,晶粒尺寸明显减小,平均晶粒尺寸从58.78μm减小到4.22μm,抗拉强度由395.39 MPa提高到659.50 MPa,细晶强化为主要强化机制;固溶态合金由于溶质原子的充分固溶,伸长率大幅提升到46.7%;进一步经时效处理后,抗拉强度提高到802.50 MPa。

关键词： Cu-15Ni-8Sn合金制备工艺晶粒特征力学性能

表观气速对除磷污泥颗粒化性能及代谢特征的影响

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中国环境科学 2024年第2期44卷 686-698页

作者：陈希胡彬张瑞峰宫延哲蔡虎林曹银焕杨文浩穆瑞花西安工程大学城市规划与市政工程学院陕西西安710048 西安净水处理有限责任公司陕西西安710061 西安工程大学环境与化学工程学院陕西西安710048

以60%乙酸钠和40%可溶性淀粉复合基质为碳源,考察表观气速对生物除磷污泥颗粒化性能及代谢特征的影响.结果表明,与小分子碳源不同,复杂碳源条件下生物除磷污泥的颗粒化由剪切力和碳源的胞内储存共同决定,污泥颗粒化进程与表观气速的大... 详细信息

以60%乙酸钠和40%可溶性淀粉复合基质为碳源,考察表观气速对生物除磷污泥颗粒化性能及代谢特征的影响.结果表明,与小分子碳源不同,复杂碳源条件下生物除磷污泥的颗粒化由剪切力和碳源的胞内储存共同决定,污泥颗粒化进程与表观气速的大小并不完全一致.R1表观气速最大(0.45cm/s),110d可实现颗粒化;R3表观气速最小(0.15cm/s),190d实现颗粒化,进程慢于R1,但快于R2(表观气速0.30cm/s).降低表观气速污泥的丝状菌含量依次增多,紧密型胞外聚合物(TB-EPS)的疏水性依次降低;但系统更易实现厌氧饱食和好氧饥饿,聚羟基烷酸酯(PHAs)厌氧合成量依次升高,R1、R2、R3分别为2.28、8.16、23.96mg/gVSS.16SrRNA基因高通量测序表明,随着表观气速的降低,具有水解发酵功能的绿弯菌门(Chloroflexi)的丰度依次升高,分别为7.86%、8.77%和32.74%.在属水平,传统聚糖菌Candidatus_Competibacter是污泥颗粒化的核心菌群,R1较高的表观气速有利于该菌的维持和优势增殖,污泥颗粒化进程最快.R3表观气速最低,水解发酵功能菌群Kouleothrix(1851型丝状菌,属于绿弯菌门)大量生长(丰度10.44%),通过提供丝状骨架和小分子碳源促进Candidatus_Competibacter的优势增殖(丰度25.73%),加快了污泥的颗粒化.

关键词：复杂碳源颗粒污泥表观气速胞内储存菌群结构影响

考虑三类客户点的卡车-无人机协同配送模型及混合算法

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供应链管理 2024年第7期5卷 33-46页

作者：狄卫民杨文豪张威风郑州大学管理学院河南郑州450001

为了提高“最后一公里”配送效率,降低配送成本,文章提出一种考虑三类客户点的卡车-无人机协同配送模式。建立以配送成本和配送时间的加权和最小化为目标的数学模型,对三类客户点在卡车-无人机协同配送路径、卡车和无人机载重、协同时... 详细信息

为了提高“最后一公里”配送效率,降低配送成本,文章提出一种考虑三类客户点的卡车-无人机协同配送模式。建立以配送成本和配送时间的加权和最小化为目标的数学模型,对三类客户点在卡车-无人机协同配送路径、卡车和无人机载重、协同时间以及无人机电量方面进行约束;使用由遗传算法、K-means聚类算法与构造算法共同组成的混合算法对模型求解。大规模算例和小规模算例结果显示本文算法求解效率和求解精度较高;以配送成本和配送时间的加权和最小化为目标对比以配送成本或配送时间最小化为目标结果更优。文章提出的模型和算法能有效解决卡车-无人机协同配送问题;以配送成本和配送时间的加权和最小化为目标相较于只考虑配送成本或配送时间更合理。

关键词：卡车-无人机协同配送遗传算法 K-means聚类算法构造算法

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Isotopic insights on quantitative assessments of interaction of eco-hydrological processes in multi-scale karst watersheds

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International Soil and Water Conservation Research 2024年第1期12卷 156-170页

作者： Zhuo hao yang Gao Qingwen Zhang wen wen Agricultural Clean Watershed Research Group Institute of Environment and Sustainable Development in AgricultureCAASBeijing100081China Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchCASBeijing100101China School of Humanities and Social Sciences Beijing Institute of TechnologyBeijing100081China

The dynamics of hydrological processes and the storage mechanisms of karst water resources are the most important issues in karst *** impact of environmental changes on water quantity,and the evaluation and quantification of eco-hydrological processes remain poorly *** this study,high-frequency continuous monitoring in multi-scale karst watersheds in Southwest China combined the approaches of water isotopes and the hybrid single-particle lagrangian integrated trajectory(HYSPLIT)model to identify the recharge mechanisms between atmospheric vapor,rainfall,surface water,and groundwater,and to reveal the interaction of eco-hydrological *** dominant moisture sources in Puding(PD)County were the Indian Ocean(43-69%)and local moisture(24-33%).Theδ^(18)O and deuterium excess(d-excess)values showed a positive correlation indicating that secondary or sub-cloud evaporation was prominent in the wet *** water line-conditioned excess(lc-excess)indicated that karst water interacted with recent precipitation,groundwater,and evaporation across *** to its specific hydrogeological structure,surface water and rainwater have a higher contribution rate to groundwater *** Chenqi stream replenished the Houzhai River mainly in the form of groundwater,with percentages ranging from 38.1 to 93.5%in the wet season,and 47.8-80.1%in the dry *** the Houzhai outlet,surface water and groundwater interconverted frequently with a percentage of 45.6-49.1%.We believe this is the first systematic study to quantify the supply relationship between water vapor transport,rainfall,surface water and groundwater in the Chinese karst zone,making a significant move forward in the field of karst hydrological processes and improving the efficiency of water resource evaluation and management.

关键词： Stable isotope Moisture sources Water cycle Karst watersheds

基于微信小程序的医用直线加速器机房环境监测系统设计

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中国医疗器械信息 2024年第7期30卷 33-37页

作者：邸元帅罗吉高大地杨皓文复旦大学附属肿瘤医院放射治疗中心复旦大学上海医学院肿瘤学系上海200032

设计了一款基于微信小程序的医用直线加速器机房环境监测系统,该系统通过NodeMCU最小系统、温湿度传感器、气压传感器以及空气质量传感器等硬件终端获取环境参数,使用WiFi模块将数据上传至巴法云服务器,然后通过微信小程序查询需要监测... 详细信息

设计了一款基于微信小程序的医用直线加速器机房环境监测系统,该系统通过NodeMCU最小系统、温湿度传感器、气压传感器以及空气质量传感器等硬件终端获取环境参数,使用WiFi模块将数据上传至巴法云服务器,然后通过微信小程序查询需要监测的参数,从而实现远程数据的实时监测。通过测试,该系统能够通过硬件终端按照通讯协议实现与巴法云服务器和微信小程序的数据交互,实现医用直线加速器机房的环境监测。

关键词：直线加速器 ESP8266 云服务器微信小程序

Artificial neural network-based method for discriminating Compton scattering events in high-purity germaniumγ-ray spectrometer

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Nuclear Science and Techniques 2024年第2期35卷 64-84页

作者： Chun-Di Fan Guo-Qiang Zeng hao-wen Deng Lei Yan Jian yang Chuan-hao Hu Song Qing yang Hou College of Nuclear Technology and Automation Engineering Chengdu University of TechnologyChengdu 610059China

To detect radioactive substances with low activity levels,an anticoincidence detector and a high-purity germanium(HPGe)detector are typically used simultaneously to suppress Compton scattering background,thereby resulting in an extremely low detection limit and improving the measurement ***,the complex and expensive hardware required does not facilitate the application or promotion of this ***,a method is proposed in this study to discriminate the digital waveform of pulse signals output using an HPGe detector,whereby Compton scattering background is suppressed and a low minimum detectable activity(MDA)is achieved without using an expensive and complex anticoincidence detector and *** electric-field-strength and energy-deposition distributions of the detector are simulated to determine the relationship between pulse shape and energy-deposition location,as well as the characteristics of energy-deposition distributions for fulland partial-energy deposition *** relationship is used to develop a pulse-shape-discrimination algorithm based on an artificial neural network for pulse-feature *** accurately determine the relationship between the deposited energy of gamma(γ)rays in the detector and the deposition location,we extract four shape parameters from the pulse signals output by the *** learning is used to input the four shape parameters into the ***,the pulse signals are identified and classified to discriminate between partial-and full-energy deposition *** partial-energy deposition events are removed to suppress Compton *** proposed method effectively decreases the MDA of an HPGeγ-energy dispersive *** results show that the Compton suppression factors for energy spectra obtained from measurements on ^(152)Eu,^(137)Cs,and ^(60)Co radioactive sources are 1.13(344 keV),1.11(662 keV),and 1.08(1332 keV),respectively,and that the corresponding MDAs are 1.4%,5.

关键词： High-purity germaniumγ-ray spectrometer Pulse-shape discrimination Compton scattering Artificial neural network Minimum detectable activity

ZmMYC7转录因子调控玉米抗病相关功能的初步研究

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农业生物技术学报 2024年第1期32卷 1-10页

作者：王永桂李薇崔婷茹张福源杨文皓许荡非邢继红曹宏哲董金皋河北农业大学华北作物改良与调控国家重点实验室/河北省植物生理与分子病理学重点实验室保定市气象局张家口市林业工作总站

玉米(Zea mays)是全球最重要的粮食作物之一，病原菌引起的玉米病害直接影响玉米生产，导致巨大的经济损失。转录因子MYC2在植物抗病领域发挥重要作用。本实验室前期获得拟南芥(Arabidopsis thaliana) AtMYC2在玉米中的同源基因ZmMYC7(Z... 详细信息

玉米(Zea mays)是全球最重要的粮食作物之一，病原菌引起的玉米病害直接影响玉米生产，导致巨大的经济损失。转录因子MYC2在植物抗病领域发挥重要作用。本实验室前期获得拟南芥(Arabidopsis thaliana) AtMYC2在玉米中的同源基因ZmMYC7(Zm00001d030028)。为了探究转录因子ZmMYC7在调控玉米抗病过程中的功能，本研究检测ZmMYC7突变体对4种玉米真菌病害的敏感性，利用qRT-PCR技术检测ZmMYC7突变对病程相关蛋白(pathogenesis-related protein, PR)基因表达的影响。结果显示，ZmMYC7与高粱(Sorghum bicolor) SbMYC2的同源性最高(90%);ZmMYC7在玉米的叶和花药中表达水平较高，紫外照射和禾谷镰刀菌(Fusarium graminearum)侵染会上调ZmMYC7基因表达；ZmMYC7突变后，玉米对叶和茎部病害的敏感性显著增加，病程相关蛋白基因ZmPRs的表达显著下调(P<0.01)。上述结果提示ZmMYC7可能在玉米抗病过程中发挥作用。本研究为深入解析ZmMYC7调控玉米抗病的分子机制提供基础资料。

关键词： ZmMYC7 病程相关蛋白(PR) 病原体禾谷镰刀菌转录因子

Enhanced red luminescence of Ca_(3)Si_(2−x)M_(x)O_(7):Eu^(3+)(M=Al,P)phosphors via partial substitution of Si^(4+) for applications in white light-emitting diodes

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Rare Metals 2024年第2期43卷 736-748页

作者： Yu-hao Ma Xi Gao wen-Tao Zhang Zhen-Rui yang Zhou Zhao Chen Qu College of Materials and Chemistry and Chemical Engineering Chengdu University of TechnologyChengdu610059China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu610059China International Advanced Energy Science Research and Education Center Graduate School of Energy ScienceKyoto UniversityYoshida-HonmachiKyoto606-8501Japan

A red-emitting phosphor Ca_(2.91)Si_(2)O_(7):0.09Eu^(3+) with partial Al^(3+)/P^(5+) substitution on Si^(4+) was synthesized via a simple solid-state method,and the effects of the introduction of the M^(3+/5+)(M=Al,P)ions on the crystal structure and photoluminescence performance of Ca_(2.91)Si_(2−x)M_(x)O_(7):0.09Eu^(3+) phosphors were *** X-ray diffraction(XRD),energy-dispersive X-ray spectroscopy(EDS),and X-ray photoelectron spectroscopy(XPS)results revealed that the structure of Ca_(3)Si_(2)O_(7) remained the same after the introduction of Al^(3+) and P^(5+) *** characteristic emission of Eu^(3+)-doped Ca_(3)Si_(2−x)M_(x)O_(7) phosphors exhibited two main peaks at 617 nm(red)and 593 nm(orange)under excitation at 394 nm,which originated from the^(5)D_(0)→^(7)F_(2)and^(5)D_(0)→^(7)F_(1) electron transitions of Eu^(3+) *** the partial substitution of Al^(3+) and P^(5+),the red emission intensities of the Ca_(2.91)Si_(2)O_(7):0.09Eu^(3+) phosphors were significantly enhanced by 1.88-and 1.42-fold,respectively,which is attributed to the crystal-field effect around Eu^(3+).Meanwhile,the luminescence intensities of the Ca_(2.91)Si_(1.96)Al_(0.04)O_(7):0.09Eu^(3+) and Ca_(2.91)Si_(1.94)P_(0.06)O_(7):0.09Eu^(3+) phosphors at 210℃ were 79.36%and 77.53%of those at 30°C,respectively,indicating their excellent thermal ***,the as-prepared Ca_(2.91)Si_(1.96)Al_(0.04)O_(7):0.09Eu^(3+)and Ca_(2.91)Si_(1.94)P_(0.06)O_(7):0.09Eu^(3+) red-emitting phosphors were combined with a near-ultraviolet chip of 395 nm to fabricate red-light-emitting diode(LED)and white(w)-LED devices with excellent chromaticity *** summary,Al^(3+)/P^(5+)-substituted Ca_(2.91)Si_(2)O_(7):0.09Eu^(3+) can serve as red-emitting phosphors for applications in w-LEDs.

关键词： Ca_(3)Si_(2)O_(7) Red-emitting phosphor Structure substitution Luminescence enhancement Crystal-field effect White light-emitting diode