检索结果-南通市图书馆

教育建筑建材生产阶段碳排放特征及减排策略——以莆田市25栋教育建筑为例

在线全文

学校读者我要写书评

暂无评论

莆田学院学报 2024年第2期31卷 84-90页

作者：佘洁卿林荣慧陈巧雯屈兵莆田学院土木工程学院福建莆田351131

确定教育建筑建材生产阶段碳排放计算方法,收集莆田市25栋教育建筑各类建筑材料的相关资料,并计算其重量及占比,确定砂、碎石、砌块、水泥、钢筋、粉煤灰、瓷砖、腻子粉、玻璃、石灰膏、铝作为碳排放计算的主要建筑材料,核算出这25栋教... 详细信息

确定教育建筑建材生产阶段碳排放计算方法,收集莆田市25栋教育建筑各类建筑材料的相关资料,并计算其重量及占比,确定砂、碎石、砌块、水泥、钢筋、粉煤灰、瓷砖、腻子粉、玻璃、石灰膏、铝作为碳排放计算的主要建筑材料,核算出这25栋教育建筑单位建筑面积碳排放量为255.70~398.03 kg CO_(2)e·m^(-2),钢筋、水泥、砌块、铝和瓷砖的碳排放量占总碳排放量的95.78%,是教育建筑在建材生产阶段节能减排的关键。应用箱线图法计算这5类主要建筑材料碳排放量的离散程度和变化阈值,结果表明钢筋、水泥和铝离散度较小,砌块和瓷砖的离散程度较大。结合以上研究成果,提出相应的减排策略,进一步推动教育建筑的节能减排。

关键词：教育建筑建筑材料生产阶段碳排放量减排策略

Non-synchronous vibration of rotor blade in a six-stage transonic compressor

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2024年第8期37卷 36-48页

作者： ronghui CHENG Zhuo WANG Huawei YU lin DU Yi ZHANG Xiaofeng SUN Aeroengine Research Institute Beihang UniversityBeijing 102206China School of Energy and Power Engineering Beihang UniversityBeijing 102206China

This paper presents an experimental study on the Non-Synchronous Vibration(NSV)in a six-stage transonic *** first part of the paper describes the NSV phenomenon of Rotor 1,which occurs when both Stator 1(S1)and Stator 2(S2)or S1 only are *** measurements and analysis are carried out for the former case through the unsteady wall pressure and the Blade Strain(BS).The spinning mode theory used in the rotor/stator interaction noise is employed to explain the relation between the circumferential wave number of the aerodynamic disturbance and the Nodal Diameter(ND)of the blade *** variations of the vibration amplitudes of different blades and the Inter-Blade Phase Angles(IBPAs)at different moments suggest that the evolution of NSV is a highly nonuniform phenomenon along the circumferential *** addition,the difference between the wall-pressure spectra generated by the NSV and the classic flutter has been *** the second part,the variations of aerodynamic loading due to the adjustment of the staggers of the Inlet Guide Vane(IGV),S1 and S2 have been *** is found that closing S1 only can result in a great fluctuation to the performance of the front stages,which might be detrimental to the flow organization and increase the risk of *** contrast,the effect of closing S2 only on the performance of the first two stages appears to be slighter relatively.

关键词： Transonic compressor Non-synchronous vibration Modal analysis Aerodynamic loading Nodal diameter

Engineering of multiple bound states in the continuum by latent representation of freeform structures

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2021年第4期9卷 I0016-I0023页

作者： ronghui lin Zahrah Alnakhli Xiaohang Li Advanced Semiconductor Laboratory King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

We demonstrate a neural network capable of designing on-demand multiple symmetry-protected bound states in the continuum(BICs)in freeform structures with predefined *** latent representation of the freeform structures allows the tuning of the geometry in a differentiable,continuous *** show the rich band inversion and accidental degeneracy in these freeform structures by interacting with the latent representation ***,a high design accuracy is demonstrated for arbitrary control of multiple BIC frequencies by using a photonic property readout network to interpret the latent representation.

关键词： representation continuum differentiable

Tapering-induced enhancement of light extraction efficiency of nanowire deep ultraviolet LED by theoretical simulations

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2018年第5期6卷 457-462页

作者： ronghui lin SERGIO VALDES GALAN HAIDING SUN YANGRUI HU MOHD SHARIZAL ALIAS BILAL JANJUA TIEN KHEE NG BOON S.OOI XIAOHANG LI Advanced Semiconductor Laboratory King Abdullah University of Science and Technology (KAUST) Photonics Laboratory King Abdullah University of Science and Technology (KAUST)

A nanowire （NW） structure provides an alternative scheme for deep ultraviolet light emitting diodes （DUV-LEDs） that promises high material quality and better light extraction efficiency （LEE）. In this report, we investigate the influence of the tapering angle of closely packed AIGaN NWs, which is found to exist naturally in molecular beam epitaxy （MBE） grown NW structures, on the LEE of NW DUV-LEDs. It is observed that, by having a small tapering angle, the vertical extraction is greatly enhanced for both transverse magnetic （TM） and transverse elec- tric （TE） polarizations. Most notably, the vertical extraction of TM emission increased from 4.8% to 24.3%, which makes the LEE reasonably large to achieve high-performance DUV-LEDs. This is because the breaking of symmetry in the vertical direction changes the propagation of the light significantly to allow more coupling into radiation modes. Finally, we introduce errors to the NW positions to show the advantages of the tapered NW structures can be projected to random closely packed NW arrays. The results obtained in this paper can provide guidelines for designing efficient NW DUV-LEDs.

关键词： Tapering-induced enhancement light extraction efficiency of nanowire deep ultraviolet LED theoretical simulations

Two-Stage Optimal Scheduling of Community Integrated Energy System

在线全文

学校读者我要写书评

暂无评论

Energy Engineering 2024年第2期121卷 405-424页

作者： Ming Li Rifucairen Fu Tuerhong Yaxiaer Yunping Zheng Abiao Huang ronghui Liu Shunfu lin New Power System Technology Research Institute The Electric Power Research Institute of State Grid Xinjiang Electric Power Co.Ltd.Urumqi830000China The College of Electrical Engineering Shanghai University of Electric PowerShanghai200090China

From the perspective of a community energy operator,a two-stage optimal scheduling model of a community integrated energy system is proposed by integrating information on controllable *** day-ahead scheduling analyzes whether various controllable loads participate in the optimization and investigates the impact of their responses on the operating economy of the community integrated energy system(IES)before and after;the intra-day scheduling proposes a two-stage rolling optimization model based on the day-ahead scheduling scheme,taking into account the fluctuation of wind turbine output and load within a short period of time and according to the different response rates of heat and cooling power,and solves the adjusted output of each controllable *** simulation results show that the optimal scheduling of controllable loads effectively reduces the comprehensive operating costs of community IES;the two-stage optimal scheduling model can meet the energy demand of customers while effectively and timely suppressing the random fluctuations on both sides of the source and load during the intra-day stage,realizing the economic and smooth operation of IES.

关键词： Integrated energy system two-stage optimal scheduling controllable loads rolling optimization

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

公交车用环保型制动块的研制

润滑与密封 2017年第11期42卷 106-110,114页

作者：林荣会青岛理工大学汽车与交通学院山东青岛266520

以腰果油改性酚醛树脂为基体,芳纶浆粕、矿物复合纤维和纸纤维为增强材料,多孔型、韧性好以及绿色无害的材料为填料,开发一种适用于公交车盘式制动器的高性能环保型制动块,并试验研究摩擦片的硬度对制动噪声的影响。结果显示,摩擦片的... 详细信息

以腰果油改性酚醛树脂为基体,芳纶浆粕、矿物复合纤维和纸纤维为增强材料,多孔型、韧性好以及绿色无害的材料为填料,开发一种适用于公交车盘式制动器的高性能环保型制动块,并试验研究摩擦片的硬度对制动噪声的影响。结果显示,摩擦片的硬度对制动噪声有显著影响,硬度越低,越不易产生制动噪声。利用二次响应曲面回归数学模型优化摩擦片的配方,并对优化配方制备的制动块进行摩擦性能试验、制动噪声试验及道路试验。结果表明,研制的制动块的摩擦因数稳定性高、磨损率低,无制动噪声;制动块的平均使用寿命比原配套制动块显著提高,其中前轮制动块提高了约59%,后轮制动块提高了约74%。

关键词：盘式制动器制动块制动噪声摩擦性能

在线全文

学校读者我要写书评

暂无评论

废弃除铜吸附剂的除磷性能

环境工程学报 2016年第11期10卷 6425-6430页

作者：杨景齐林荣辉吕海霞福州大学材料科学与工程学院福州350108

为了更高效率利用除铜吸附剂,降低除磷成本,提出了一种有效、经济的废弃吸附剂的处理方式。将吸附了铜离子的磁性壳聚糖修饰氧化石墨烯(MNPs@CS@GO),不经过洗脱,直接利用附着的铜离子用于吸附水溶液中磷酸根离子。利用红外光谱对吸附前... 详细信息

为了更高效率利用除铜吸附剂,降低除磷成本,提出了一种有效、经济的废弃吸附剂的处理方式。将吸附了铜离子的磁性壳聚糖修饰氧化石墨烯(MNPs@CS@GO),不经过洗脱,直接利用附着的铜离子用于吸附水溶液中磷酸根离子。利用红外光谱对吸附前后吸附剂的结构进行表征,并考察了溶液pH、吸附剂用量、振荡时间对吸附剂吸附磷酸根离子的影响,得出了最佳的吸附条件。结果表明:吸附剂饱和吸附容量为11.4 mg·g^(-1);吸附剂除磷的再生性良好;吸附过程能用准二级动力学模型很好地进行拟合。

关键词：废弃吸附剂除铜除磷

在线全文

学校读者我要写书评

暂无评论

亚麻纤维对酚醛树脂基摩擦材料的影响

工程塑料应用 2021年第9期49卷 130-134页

作者：陈晓东林荣会青岛理工大学机械与汽车工程学院山东青岛266000

通过对亚麻纤维进行改性处理,以酚醛树脂为基体,石墨、硫酸钡等为填料制备了不同含量亚麻纤维增强树脂基摩擦材料。利用电动洛氏硬度机、定速摩擦磨损试验机、场发射扫描电镜等设备,研究了亚麻纤维对摩擦材料的物理性能、力学性能和摩... 详细信息

通过对亚麻纤维进行改性处理,以酚醛树脂为基体,石墨、硫酸钡等为填料制备了不同含量亚麻纤维增强树脂基摩擦材料。利用电动洛氏硬度机、定速摩擦磨损试验机、场发射扫描电镜等设备,研究了亚麻纤维对摩擦材料的物理性能、力学性能和摩擦磨损性能的影响,观察了磨损后的表面形貌。研究结果表明:亚麻纤维能增加摩擦材料的冲击强度、稳定摩擦系数、降低高温时的磨损率,对密度和硬度的影响较小,过多的亚麻纤维会降低与树脂的粘结强度,在高温时会加剧摩擦材料的热衰退现象。综合比较,亚麻纤维含量为6%时为最佳用量。

关键词：摩擦材料亚麻纤维力学性能摩擦磨损性能表面形貌

在线全文

学校读者我要写书评

暂无评论

特色农业气象服务专题片的策划思路

农业网络信息 2013年第6期 130-131页

作者：林荣惠福建省漳州市气象局福建漳州363000

气象影视是气象部门对外服务的重要媒介,充分发挥气象影视节目传播优势,创新为农服务气象产品,有效地提升气象服务"三农"的水平。文中通过对漳州特色农业"一县一业"专题片的创作开发,开展特色农业气象服务,借助电视媒体发布平台,探讨提... 详细信息

气象影视是气象部门对外服务的重要媒介,充分发挥气象影视节目传播优势,创新为农服务气象产品,有效地提升气象服务"三农"的水平。文中通过对漳州特色农业"一县一业"专题片的创作开发,开展特色农业气象服务,借助电视媒体发布平台,探讨提升特色农业气象服务的途径和方法。

关键词：特色农业气象服务专题片策划