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计及风光出力相关性的风光水储互补系统优化调度

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水电能源科学 2024年第8期42卷 218-222页

作者：惠振国艾澜常鹏霞石家康朱甜李超顺湖北白莲河抽水蓄能有限公司湖北黄冈438600 华中科技大学土木与水利工程学院湖北武汉430074

由于风电、光电及水电出力均具有随机性、波动性等特点,其大规模投入电网所带来的不确定性成为目前多能互补系统研究的难点。对此,构建了以抽蓄电站为储能装置的风光水储互补系统,为充分考虑风光出力的不确定性与相关性,采用Frank-Copul... 详细信息

由于风电、光电及水电出力均具有随机性、波动性等特点,其大规模投入电网所带来的不确定性成为目前多能互补系统研究的难点。对此,构建了以抽蓄电站为储能装置的风光水储互补系统,为充分考虑风光出力的不确定性与相关性,采用Frank-Copula联合概率分布函数生成风光出力场景;在水电站丰平枯时期不同出力特性下综合考虑系统各约束,以互补系统出力波动性最小为目标建立优化调度模型,并采用遗传算法进行求解;最后通过算例分析验证了所提模型的有效性,结果显示在引入抽水蓄能电站后,系统的波动性都有所降低,其中丰水期降低了12.65%,平水期降低了15.79%,枯水期降低了24.26%,这表明风光水储互补系统可以减少风电、光伏发电及水电的波动性对电网的影响。

关键词：风光水储互补系统 Frank-Copula 抽水蓄能电站遗传算法优化调度

苏里格气田东区奥陶系H2S分布特征及TSR成因证据

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地质论评 2024年第S1期70卷 285-286页

作者：姬鹏程常鹏李兵刚周琼成育红朱泊承刘建章陈诚中国石油长庆油田分公司第五采气厂内蒙古乌审旗017399 中国地质大学(武汉)构造与油气资源教育部重点实验室武汉430074 中国海洋石油深圳分公司广东深圳518000

苏东气藏区位于苏里格气田东部和靖边气田北部,下古生界奥陶系马家沟组马五1—马五4亚段是主要产气层。在气藏开发过程中不同井区H_(2)S含量变化极大,为气藏高效、安全开发造成极大干扰。通过对历年800多口井7500多次的H_(2)S含量测试... 详细信息

苏东气藏区位于苏里格气田东部和靖边气田北部,下古生界奥陶系马家沟组马五1—马五4亚段是主要产气层。在气藏开发过程中不同井区H_(2)S含量变化极大,为气藏高效、安全开发造成极大干扰。通过对历年800多口井7500多次的H_(2)S含量测试数据的梳理,结合区域地质条件和天然气、储层岩石地球化学特征,分析苏东区下古生界H2S分布特征,揭示其成因机制.

关键词： TSR H_(2)S 苏里格气田

Methanol Tolerant PWA-Pt/C Catalyst with Excellent Electrocatalytic Activity for Oxygen Reduction in Direct Methanol Fuel Cell

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Chinese Chemical Letters 2005年第9期16卷 1252-1254页

作者： Yan Zhuo LU Tian Hong LU chang peng LIU Ya Wen TANG Wei XING changchun Institute of Applied Chemistry Graduate School of the Chinese Academy of Sciences Chinese Academy of Sciences Changchun 130022 Environmental Friendship Laboratory College of Chemistry and Environmental Science Nanjing Normal University Nanjing 210097

It was reported for the first time that phosphorictungstenic acid （PWA） could promote the oxygen reduction reaction （ORR） and inhibit the methanol oxidation reaction at the cathodic Pt/C catalyst in the direct methanol fuel cell （DMFC）. When the weight ratio of PWA to Pt/C is 1, the composite catalyst increases the reduction current of oxygen by about 38% and decreases the oxidation current of methanol by about 76% compared with that of the Pt/C catalyst.

关键词： DMFC phosphorictungstenic acid methanol tolerance oxygen reduction

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霜桑叶粉杂粮面条配方优化及其低GI验证

芜湖职业技术学院学报 2024年第2期26卷 26-31页

作者：徐鑫彭常安张烨李国成汪本勤六安职业技术学院城市建设学院安徽六安237158 芜湖职业技术学院食品与生物工程学院安徽芜湖241003 安徽大学江淮学院安徽合肥230088 皖西学院金融与数学学院安徽六安237012

为改善面条的品质和降低血糖生成指数(glycemic index, GI),研究将霜桑叶粉、魔芋精粉和燕麦粉与小麦面粉搭配制作面条,通过单因素试验并结合L9(33)正交试验,以面条蒸煮特征和感官品质为评价标准,优化出霜桑叶粉杂粮面条配方并分析血糖... 详细信息

为改善面条的品质和降低血糖生成指数(glycemic index, GI),研究将霜桑叶粉、魔芋精粉和燕麦粉与小麦面粉搭配制作面条,通过单因素试验并结合L9(33)正交试验,以面条蒸煮特征和感官品质为评价标准,优化出霜桑叶粉杂粮面条配方并分析血糖生成指数。结果表明,适量添加霜桑叶粉、魔芋精粉和燕麦粉均能显著改善霜桑叶粉杂粮面条品质,三种成分的最佳添加质量分数分别为6%、10%和15%;燕麦粉对面条感官具有极显著影响,霜桑叶粉和魔芋精粉对面条感官具有显著影响,其影响顺序为:燕麦粉>霜桑叶粉>魔芋精粉。以该配方制作的霜桑叶粉杂粮面条感官评价均分达85.75,且能显著降低人体血糖浓度,GI值为46.08(低GI食品的标准是GI≤55),是一款低GI面制品。此项研究为桑叶的综合利用和低GI食品的研发提供技术支持。

关键词：霜桑叶粉杂粮面条配方优化低GI食品

Kinematic Calibration and Forecast Error Compensation of a 2-DOF Planar Parallel Manipulator

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Chinese Journal of Mechanical Engineering 2011年第6期24卷 992-998页

作者： chang peng LI Chengrong LI Tiemin Hi-tech Innovation Center Institute of AutomationChinese Academy of SciencesBeijing 100190China Department of Precision Instruments and Mechanology Tsinghua UniversityBeijing 100084China

Due to large workspace,heavy-duty and over-constrained mechanism,a small deformation is caused and the precision of the 2-DOF planar parallel manipulator is *** kinematic calibration cannot compensate the end-effector errors caused by the small *** paper presents a method combined step kinematic calibration and linear forecast real-time error compensation in order to enhance the precision of a two degree-of-freedom(DOF) planar parallel manipulator of a hybrid machine *** the step kinematic calibration phase of the method,the end-effector errors caused by the errors of major constant geometrical parameters is *** step kinematic calibration is based on the minimal linear combinations(MLCs) of the error *** simple and feasible measurements in practice are given,and identification analysis of the set of the MLCs for each measurement is carried *** to identification analysis results,both measurement costs and observability are considered,and a step calibration including step measurement,step identification and step error compensation is *** linear forecast real-time error compensation is used to compensate the end-effector errors caused by other parameters after the step kinematic *** the advantages of the step kinematic calibration and the linear forecast real-time error compensation,a method for improving the precision of the 2-DOF planar parallel manipulator is *** results show that the proposed method is robust and effective,so that the position errors are kept to the same order of the measurement *** presented method is attractive for the 2-DOF planar parallel manipulator and can be also applied to other parallel manipulators with fewer than six DOFs.

关键词： parallel manipulator kinematic calibration error compensation minimal linear combinations (MLCs)

Mechanism of Nickel-Aluminium Alloy Electroplating

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Journal of Wuhan University of Technology(Materials Science) 2003年第1期18卷 20-21页

作者：段友构 JishouUniversity

The effect of operating conditions on the aluminium content of Ni-Al alloy deposit and the catalytic function of NaF on electrodeposition in the nonaqueous solution containing aluminium are *** results indicate that the plated aluminuim content will be increased with the rise of current density in a given *** the current density is 2.5A/dm 2,nickle aluminium alloy containing 13.1 wt% aluminium will be *** plated aluminium content will be increased by 2wt% as 0.1mol/L NaF is added to the bath.

关键词： nickel aluminium alloy electrode position mechanism

Effects of particle size of dielectric fillers on the output performance of piezoelectric and triboelectric nanogenerators

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Journal of Advanced Ceramics 2021年第5期10卷 991-1000页

作者： Xiao MENG Zhuo ZHANG Dabin LIN Weiguo LIU Shun ZHOU Shaobo GE Yongming SU chang peng Lin ZHANG School of Optoelectronical Engineering Xi'an Technological UniversityXi'an 710021China Department of Mechanical and Aerospace Engineering North Carolina State UniversityRaleighNC 27695USA Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi'an Jiaotong UniversityXi'an 710049China

Recently,piezoelectric/triboelectric nanogenerators based on piezoelectric composite materials have been intensively studied to achieve high electrical output *** this work,flexible BaTiO_(3)(BT)/PDMS nanocomposite films with various sizes and concentrations were fabricated and used as the *** influence of dielectric properties on the electrical output of nanogenerators was studied as well as the structure of the *** dielectric constant increased from 6.5 to 8 with the concentration of BT nanoparticles and decreased with the frequency from 10^(2) to 10^(6) ***,the dielectric constant showed 11% decrease with the temperature range from 30 to 180℃.It was found that the concentration of BT nanoparticles has promoted the electrical output of *** output voltage and current are all enhanced with the BT nanoparticles,which reached 200 V and 0.24μA in TENG with 40 wt% BT nanoparticles,*** selected device exhibited the power of 0.16 mW and employed to demonstrate its ability to power wearable/portable electronics by lighting the LEDs.

关键词： polymer-matrix composites nano composites smart materials electrical properties

黑土团聚体有机磷及其组分对长期不同施肥措施的响应

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玉米科学 2024年第6期32卷 95-103页

作者：张秀芝牛铭晨高纪超彭畅李强焦云飞朱平高洪军吉林省农业科学院长春130033

以国家黑土肥力与肥料效益监测基地的长期定位施肥试验为平台,从土壤团聚体微环境的角度研究施肥对黑土团聚体有机磷含量及其组分的影响。结果表明,施有机肥显著增加不同粒级团聚体有机磷含量以及活性有机磷(LOP)、中等活性有机磷(MLOP... 详细信息

以国家黑土肥力与肥料效益监测基地的长期定位施肥试验为平台,从土壤团聚体微环境的角度研究施肥对黑土团聚体有机磷含量及其组分的影响。结果表明,施有机肥显著增加不同粒级团聚体有机磷含量以及活性有机磷(LOP)、中等活性有机磷(MLOP)和中稳性有机磷(MROP)含量。黑土有机磷主要分布在<0.25 mm的微团聚体中,团聚体中等活性有机磷是团聚体有机磷的主体,有机物料的施入可以促进土壤有机磷向活性较高的形态转化,有利于提高土壤磷素的有效性。

关键词：玉米长期定位施肥黑土团聚体有机磷

Medical therapy for clinical benign prostatic hyperplasia:α1 Antagonists,5α reductase inhibitors and their combination

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Asian Journal of Urology 2017年第3期4卷 185-190页

作者： Cheuk Fan Shum Weida Lau chang peng Colin Teo Department of Urology Khoo Teck Puat HospitalSingapore

Medical therapy for clinical benign prostatic hyperplasia(BPH)has advanced significantly in the last 2 *** new a1 antagonists and 5a reductase inhibitors(5ARi)are now commercially *** practicing urologist must decide on the most appropriate medication for his patients,taking into consideration various factors like efficacy,dosing regime,adverse effects,cost,patient’s socioeconomic background,expectations,drug availability and his own clinical *** use of combination therapy added further to the complexity in clinical judgment when *** highlight some of the key points in prescribing a1 antagonists,5ARi and their combination,based on our viewpoints and experience as urologists in an Asian clinical setting.

关键词： 5αReductase inhibitors Adrenergicα1 receptor antagonists Drug therapy Combination Prostatic hyperplasia