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基于FPGA的10M/100M以太网控制器的设计

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太原理工大学学报 2008年第S1期39卷 27-29页

作者：程鹏张刚太原理工大学信息工程学院山西太原030024

介绍了一种10M/100M以太网控制器的实现方法,该控制器以FIFO作为帧缓存,通过程序设计实现10M/100M自适应,设计中采用WS接口,提高了设计的灵活行,可以实现与其他SOC的互连[1],该设计采用VerilogHDL硬件描述语言编程,基于ISE开发环境,在Xi... 详细信息

介绍了一种10M/100M以太网控制器的实现方法,该控制器以FIFO作为帧缓存,通过程序设计实现10M/100M自适应,设计中采用WS接口,提高了设计的灵活行,可以实现与其他SOC的互连[1],该设计采用VerilogHDL硬件描述语言编程,基于ISE开发环境,在Xilinx公司的Spartan-Ⅲ系列FPGA XC3S1000-4-FT256C上实现。

关键词：以太网MAC 10M/100M FPGA VerilogHDL

Cu-Mn化学镀层对Q235的扩散焊接强度的影响

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湖南科技大学学报（自然科学版） 2005年第3期20卷 23-25页

作者：彭成章陈安华王文明湖南科技大学机械设备健康维护省重点实验室湖南湘潭411201

采用化学镀工艺,在Q235基材上制备出2～4 μm的Cu-Mn合金化学镀层.在650℃～870℃温度范围内对化学镀层进行了真空扩散焊接试验.利用金相和扫描电镜对接头进行了微观组织和能谱分析,并用拉伸试验评价了接头的连接强度.研究结果表明,在... 详细信息

采用化学镀工艺,在Q235基材上制备出2～4 μm的Cu-Mn合金化学镀层.在650℃～870℃温度范围内对化学镀层进行了真空扩散焊接试验.利用金相和扫描电镜对接头进行了微观组织和能谱分析,并用拉伸试验评价了接头的连接强度.研究结果表明,在相同工艺参数条件下,镀有Cu-Mn化学镀层的试件其剪切强度比无镀层试件提高1倍以上;高温扩散焊接时接头的连接强度提高,但基体组织比低温扩散焊接时显著粗化.图3,表2,参7.

关键词：化学镀扩散焊接剪切强度快速成形

香菇多糖与环磷酰胺联合治疗前列腺癌荷瘤小鼠的实验研究

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中华肿瘤防治杂志 2017年第14期24卷 971-975页

作者：崔崎郭小鹏成俊张树杰王鹏新疆维吾尔自治区中医院外二科新疆乌鲁木齐830000

目的前列腺癌具有较高的死亡率,探求其有效治疗方式已成为学者的研究重点。本研究探讨香菇多糖联合环磷酰胺治疗前列腺癌荷瘤小鼠效果及联合治疗机制,为该联合治疗方案临床应用提供依据。方法利用RM-1细胞建立前列腺癌皮下移植小鼠模型,... 详细信息

目的前列腺癌具有较高的死亡率,探求其有效治疗方式已成为学者的研究重点。本研究探讨香菇多糖联合环磷酰胺治疗前列腺癌荷瘤小鼠效果及联合治疗机制,为该联合治疗方案临床应用提供依据。方法利用RM-1细胞建立前列腺癌皮下移植小鼠模型,将60只Balb/c荷瘤小鼠随机平分为4组,即对照组(Control组,生理盐水治疗)、LNT组(香菇多糖治疗)、CTX组(环磷酰胺治疗)和LNT+CTX组(香菇多糖和环磷酰胺治疗);观察治疗后荷瘤小鼠肿瘤体积比与平均存活时间,苏木精-伊红(HE)染色观察治疗后肿瘤组织病理学改变,检测荷瘤小鼠脾质量、脾指数和淋巴细胞水平确定荷瘤小鼠免疫功能情况。结果联合治疗后LNT+CTX组荷瘤小鼠肿瘤体积比达到3.51±0.80,显著低于Control组(t=3.174)、LNT组(t=2.730)和CTX组(t=3.086),P0.05。结论香菇多糖与环磷酰胺联合作用共同减缓了肿瘤生长,提高了荷瘤小鼠存活时间,其可能机制是香菇多糖提高了环磷酰胺治疗小鼠的免疫功能,促进了对肿瘤杀伤。

关键词：香菇多糖环磷酰胺前列腺癌联合治疗实验研究

Gradient‑Layered MXene/Hollow Lignin Nanospheres Architecture Design for Flexible and Stretchable Supercapacitors

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Nano-Micro Letters 2025年第2期17卷 447-462页

作者： Haonan zhang cheng Hao Tongtong Fu Dian Yu Jane Howe Kaiwen Chen Ning Yan Hao Ren Huamin Zhai Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials NanJing Forestry UniversityNanjing 210037People’s Republic of China Department of Chemical Engineering and Applied Chemistry University of Toronto200 College StreetTorontoON M5S 3E5Canada Department of Materials Science and Engineering University of Toronto184 College StreetTorontoON M5S 3E4Canada College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China

With the rapid development of flexible wearable electronics,the demand for stretchable energy storage devices has *** this work,a novel gradient-layered architecture was design based on single-pore hollow lignin nanospheres(HLNPs)-intercalated two-dimensional transition metal carbide(Ti_(3)C_(2)T_(x) MXene)for fabricating highly stretchable and durable *** depositing and inserting HLNPs in the MXene layers with a bottom-up decreasing gradient,a multilayered porous MXene structure with smooth ion channels was constructed by reducing the overstacking of MXene ***,the micro-chamber architecture of thin-walled lignin nanospheres effectively extended the contact area between lignin and MXene to improve ion and electron accessibility,thus better utilizing the pseudocapacitive property of *** these strategies effectively enhanced the capacitive performance of the *** addition,HLNPs,which acted as a protective phase for MXene layer,enhanced mechanical properties of the wrinkled stretchable electrodes by releasing stress through slip and deformation during the stretch-release cycling and greatly improved the structural integrity and capacitive stability of the *** electrodes and symmetric flexible all-solid-state supercapacitors capable of enduring 600%uniaxial tensile strain were developed with high specific capacitances of 1273 mF cm^(−2)(241 F g^(−1))and 514 mF cm^(−2)(95 F g^(−1)),***,their capacitances were well preserved after 1000 times of 600%stretch-release *** study showcased new possibilities of incorporating biobased lignin nanospheres in energy storage devices to fabricate stretchable devices leveraging synergies among various two-dimensional nanomaterials.

关键词： Hollow lignin nanospheres MXene Gradient-layered architecture Wrinkled electrodes Stretchable supercapacitors

Moment Redistribution Effect of the Continuous Glass Fiber Reinforced Polymer-Concrete Composite Slabs Based on Static Loading Experiment

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Structural Durability & Health Monitoring 2025年第1期19卷 105-123页

作者： Zhao-Jun zhang Wen-Wei Wang Jing-Shui Zhen Bo-cheng Li De-cheng Cai Yang-Yang Du Hui Huang Offshore Oil Engineering Co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model

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基于LMBP的烟台四十里湾赤潮预测模型

系统仿真学报 2009年第19期21卷 6250-6255页

作者：胡婧姬鹏张承慧山东大学控制科学与工程学院济南250061

针对赤潮发生的突发性及非线性等特点,提出了基于LMBP神经网络(Levenberg–Marquardt Back-Propergation Neural Network Algorithm)的赤潮预测模型。通过多组对比实验构建了最优的LMBP神经网络模型,并将该模型与标准BP网络模型进行了... 详细信息

针对赤潮发生的突发性及非线性等特点,提出了基于LMBP神经网络(Levenberg–Marquardt Back-Propergation Neural Network Algorithm)的赤潮预测模型。通过多组对比实验构建了最优的LMBP神经网络模型,并将该模型与标准BP网络模型进行了对比实验,对比结果证明了LMBP模型在收敛速度和拟合精度上的优越性。进而对该赤潮预测模型进行了测试,其结果充分表明:以叶绿素a,透明度为输入的该LMBP神经网络模型对烟台四十里湾海域的赤潮预测是有效的。目前,该模型已经进行了应用实验,实时预测效果良好。

关键词：赤潮烟台四十里湾 LMBP算法 Levenberg—Marquardt最优化方法

Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang zhang Danyang Wu Linke Cai Youluan Lu Fanpeng cheng Lijuan Shi Qun Yi Yao Liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Oxygen evolution reaction

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近距离煤层定量判定方法探讨

煤炭工程 2017年第9期49卷 118-121页

作者：程蓬张剑刘爱卿天地科技股份有限公司开采设计事业部北京100013 煤炭科学研究总院开采设计研究分院北京100013 煤炭资源高效开采与洁净利用国家重点实验室北京100013

在分析我国近距离煤层群开采和研究现状的基础上,以西山矿区杜儿坪矿为工程背景,以理论分析和数值计算方法为手段,重点研究不同煤层厚度、不同煤柱尺寸和不同底板深度对近距离下部煤层应力状态的影响,分析底板下部岩层垂直应力分布特征... 详细信息

在分析我国近距离煤层群开采和研究现状的基础上,以西山矿区杜儿坪矿为工程背景,以理论分析和数值计算方法为手段,重点研究不同煤层厚度、不同煤柱尺寸和不同底板深度对近距离下部煤层应力状态的影响,分析底板下部岩层垂直应力分布特征和变化规律,认为底板深度Z是影响下部岩层应力状态的关键参数,提出了一种新型"近距离煤层群"定量性判定方法,弥补近距离煤层群相关定义的空白现状,对于后续近距离煤层开采提供一定的借鉴意义。

关键词：近距离煤层定量分析煤柱煤层厚度层间距离

Tribo-piezoelectric hybrid nanogenerator based on temporary solution template process

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Science China Technological Sciences 2025年

作者： Jinxian zhang peng PAN Zhengchun YANG Jie HE Peifeng ZENG College of Integrated Circuit Science and Engineering Tianjin University of Technology

In this study, a friction piezoelectric hybrid nanogenerator （HNG） with a sponge-like structure was developed. A novel temporary solution template process was proposed to create smaller, uniformly distributed pores within the sponge structure, allowing for the complete volatilization of the porous agent without causing structural defects. The output voltage of the porous HNG structure was nearly twice that of its solid structure, demonstrating superior electrical output performance. A peak-to-peak open circuit voltage of 168 V, a short circuit current density of 36.41μA cm-2, and a maximum power density of 32 W m-2were obtained at a load resistance of 200 MΩby periodically compressing an HNG with a dimension of 0.8 cm×0.8 cm. The generated electricity was sufficient to directly illuminate 180 tandem white LEDs and power small electronic devices. In addition, this study shows that the HNG could detect electrical signals from different parts of the human body during movement, suggesting significant potential for applications in energy harvesting and motion sensing.

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