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Direct energy rebound effect for road transportation in China

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Frontiers of Engineering Management 2023年第4期10卷 597-611页

作者： Donglan zha Pansong JIANg Xue zha.g College of Economics and Management Nanjing University of Aeronautics and AstronauticsNanjing 211106China Research Centre for Soft Energy Science Nanjing University of Aeronautics and AstronauticsNanjing 211106China

The enhancement of energy efficiency stands as the principal avenue for attaining energy conservation and emissions reduction objectives within the realm of road ***,it is imperative to acknowledge that these objectives may,in part or in entirety,be offset by the phenomenon known as the energy rebound effect(ERE).To quantify the long-term EREs and short-term EREs specific to China’s road transportation,this study employed panel cointegration and panel error correction models,accounting for asymmetric price *** findings reveal the following:The long-term EREs observed in road passenger transportation and road freight transportation range from 13%to 25%and 14%to 48%,respectively;in contrast,the short-term EREs in road passenger transportation and road freight transportation span from 36%to 41%and 3.9%to 32%,*** is noteworthy that the EREs associated with road passenger transportation and road freight transportation represent a partial rebound effect,falling short of reaching the magnitude of a counterproductive backfire *** leads to the inference that the upsurge in energy consumption within the road transportation sector cannot be solely attributed to advancements in energy ***,various factors,including income levels,the scale of commodity trade,and industrial structure,exert more substantial facilitating ***,the escalation of fuel prices fails to dampen the demand for energy services,whether in the domain of road passenger transportation or road freight *** light of these conclusions,recommendations are proffered for the formulation of energy efficiency policies pertinent to road transportation.

关键词： road transportation direct energy rebound effect asymmetric price effects panel data model

growth of Tellurium Nanobelts on h-BN for p-type Transistors with Ultrahigh Hole Mobility

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Nano-Micro Letters 2022年第7期14卷 43-54页

作者： Peng Yang Jiajia zha.guoyun gao long Zheng Haoxin Huang Yunpeng Xia Songcen Xu Tengfei Xiong Zhuomin zha.g Zhengbao Yang Ye Chen Dong-Keun Ki Juin J.Liou Wugang Liao Chaoliang Tan College of Electronics and Information Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China Department of Electrical Engineering City University of Hong KongHong Kong SARPeople’s Republic of China Department of Physics The University of Hong KongPokfulam RoadHong Kong SARPeople’s Republic of China Department of Chemistry The Chinese University of Hong KongHong Kong SARPeople’s Republic of China Department of Chemistry City University of Hong KongHong Kong SARPeople’s Republic of China Department of Mechanical Engineering City University of Hong KongHong Kong SARPeople’s Republic of China Center of Super-Diamond and Advanced Films(COSDAF) City University of Hong KongHong Kong SARPeople’s Republic of China

The lack of stable p-type van der Waals(vdW)semiconductors with high hole mobility severely impedes the step of low-dimensional materials entering the industrial *** p-type black phosphorus(bP)and tellurium(Te)have shown promising hole mobilities,the instability under ambient conditions of bP and relatively low hole mobility of Te remain as daunting *** we report the growth of high-quality Te nanobelts on atomically flat hexagonal boron nitride(h-BN)for high-performance p-type field-effect transistors(FETs).Importantly,the Te-based FET exhibits an ultrahigh hole mobility up to 1370 cm^(2) V^(−1) s^(−1) at room temperature,that may lay the foundation for the future high-performance p-type 2D FET and metal-oxide-semiconductor(p-MOS)*** vdW h-BN dielectric substrate not only provides an ultra-flat surface without dangling bonds for growth of high-quality Te nanobelts,but also reduces the scattering centers at the interface between the channel material and the dielectric layer,thus resulting in the ultrahigh hole mobility.

关键词： Chemical vapor deposition Substrate engineering Tellurium Field-effect transistors Hole mobility

Study on the epoxidation of olefins with H_(2)O_(2)catalyzed by biquaternary ammonium phosphotungstic acid

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Chinese Journal of Chemical Engineering 2023年第6期58卷 146-154页

作者： Zijie zha.g Qianyu zha Ying Liu Zhibing zha.g Jia Liu Zheng Zhou School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210093China

Selective epoxidation of olefins is an important field in chemical *** this work,we developed a new phosphotungstic acid catalyst{[(C_8H_(17))(CH_(3))_(2)N]_(2)(CH_(2))_(3)}_(1.5){PO_(4)[WO(O_(2))_(2)]_(4)}with long carbon chain and biquaternary ammonium *** could be epoxidized to cyclohexene oxide in 96.3%conversion and 98.2%*** catalyst type,solvent type,catalyst loading,initial molar ratio,temperature,cycle performance and substrate extensibility were studied and optimized,the kinetic parameters about overall reaction and unit reaction were also *** light scattering analysis was carried out to explain the different catalytic performance between catalysts with different carbon chain *** novel catalyst and the corresponding dynamics and mechanism study could probably help the industrial application on the epoxidation of cyclohexene with H_(2)O_(2).

关键词： Epoxidation of olefins Phosphotungstic acid Cyclohexene Kinetic study

工业废水处理技术教学中学生终身学习意识的培养

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当代化工研究 2024年第15期 151-153页

作者：张春鹏董招君查恩爽吉林大学新能源与环境学院吉林130021 吉林大学建设工程学院吉林130021

环境工程专业工程教育认证过程中终身学习意识的培养对于学生在非教学时段的自身能力提高具有现实意义。本文以工业废水处理技术为例,引导学生在工业废水处理技术课堂学习及课后学习过程中的终身学习意识的培养,以期为提高教学的长期影... 详细信息

环境工程专业工程教育认证过程中终身学习意识的培养对于学生在非教学时段的自身能力提高具有现实意义。本文以工业废水处理技术为例,引导学生在工业废水处理技术课堂学习及课后学习过程中的终身学习意识的培养,以期为提高教学的长期影响提供参考。

关键词：环境工程工程教育认证水质工程学 ChatgPT

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浅析苗族蜡染元素在现代设计中的创新与应用

西部皮革 2024年第5期46卷 112-114页

作者：查沁怡周慧媛郑曦阳南京工业大学

苗族蜡染因其特有的民族文化底蕴和审美价值，被誉为我国少数民族文化乃至传统文化之瑰宝。这种经过世代传承至今的民族传统技艺，其魅力之处就在于蓝与白的呼应和带着神秘气息的纹样符号，这些纹样符号记载着中国少数民族源远流长的传... 详细信息

苗族蜡染因其特有的民族文化底蕴和审美价值，被誉为我国少数民族文化乃至传统文化之瑰宝。这种经过世代传承至今的民族传统技艺，其魅力之处就在于蓝与白的呼应和带着神秘气息的纹样符号，这些纹样符号记载着中国少数民族源远流长的传统文化和难以复制的民俗文化。文章主要论述了苗族蜡染的发展历程，解读其中的精神文化内涵。通过对苗族蜡染各个角度文化创意切入点的探究，阐述了其文化精神内涵在现代设计中的创新与应用。

关键词：苗族蜡染现代设计应用与创新

Selective laser melted AZ91D magnesium alloy with superior balance of strength and ductility

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Journal of Magnesium and Alloys 2023年第12期11卷 4644-4658页

作者： Xinzhi Li Xuewei Fang Shuaipeng Wang Siqing Wang Min zha Ke Huang State Key Laboratory for Manufacturing Systems Engineering School of Mechanical EngineeringXi’an Jiaotong UniversityXi’an 710049ShaanxiPR China School of Materials Science and Engineering Jilin UniversityChangchunPR China

In the context of global carbon neutrality, the application of lightweight magnesium alloys is becoming increasingly attractive. In this study, selective laser melting(SLM) was employed to achieve nearly full dense and crack-free AZ91D components with fine equiaxed grain structure. The formation mechanism of typical pore defects(gas pore, lack-of-fusion pore and keyhole pore) and melting modes(keyhole mode and conduction mode) were systematically studied by varying the laser power and scanning speed. The morphology and volume fraction of the pores under different processing conditions were characterized. A criterion based on the depth-to-width ratio of the melt pool was established to identify different melting modes. The strength and ductility(tensile strength up to 340 MPa and uniform elongation of 8.9%)of the as deposited AZ91D are far superior to those of the casting components and are comparable to those of its wrought *** superior balance of strength and ductility of SLMed AZ91D, as well as the negligible anisotropic properties are mainly ascribed to the extremely fine equiaxed grain structure(with average grain size of ~1.2 μm), as well as the discontinuous distribution of β-Al_(12)Mg_(17) phases. It thus provides an alternative way to fabricate high-strength magnesium alloys with complex geometry.

关键词： Magnesium alloy Selective laser melting Melting mode Defects Equiaxed grain structure Mechanical properties

基于多维度输入的水厂日取水量卷积长短期记忆网络预测

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水电能源科学 2024年第5期42卷 72-75页

作者：刘怀利王铭铭查淳膺王健瞿暄安徽省(水利部淮河水利委员会)水利科学研究院安徽合肥230088 合肥工业大学土木与水利工程学院安徽合肥230009

鉴于传统的单维输入卷积长短期记忆网络(CNN-LSTM)的预测精度依赖于历史数据的规律性,构建了基于多维度输入的卷积长短期记忆网络预测模型,其中采用皮尔逊相关分析来识别数据内部特征或外界环境因子相关性,在此基础上构建模型输入,并应... 详细信息

鉴于传统的单维输入卷积长短期记忆网络(CNN-LSTM)的预测精度依赖于历史数据的规律性,构建了基于多维度输入的卷积长短期记忆网络预测模型,其中采用皮尔逊相关分析来识别数据内部特征或外界环境因子相关性,在此基础上构建模型输入,并应用于两个自来水厂日取水量预测。结果表明,相较于传统单维度输入预测模型,构建的基于数据内部特征或外部环境因子的多维度输入CNN-LSTM预测导致A水厂取水量的平均绝对百分比误差分别降低了32%、17%;B水厂的平均绝对百分比误差分别降低了47%、12%,表明基于数据内部特征的多维度输入模型更高。其余评价指标也呈现类似变化;且增大水厂取水量有助于提高模型的预测精度。该模型输入分析方法可为提高预测模型精度提供有效范例。

关键词：取水量预测卷积神经网络相关性分析多维度输入

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聚丁二酸丁二酯切片的储存稳定性

工程塑料应用 2024年第7期52卷 131-138页

作者：尉犇丁波娜张须臻查全亮徐双喜王秀华浙江理工大学纺织纤维材料与加工技术国家地方联合工程实验室杭州310018 浙江省现代纺织技术创新中心浙江绍兴312030 绍兴格莱博新材料有限公司浙江绍兴312030

为了探讨在工业化仓储条件下,生物可降解聚酯——聚丁二酸丁二酯(PBS)的分子量、低聚物含量、切片可加工性能的变化规律,以PBS切片为研究对象,选择真空干燥和鼓风干燥两种干燥方式,避光自然吸湿、真空日晒和真空避光三种储存方式对样品... 详细信息

为了探讨在工业化仓储条件下,生物可降解聚酯——聚丁二酸丁二酯(PBS)的分子量、低聚物含量、切片可加工性能的变化规律,以PBS切片为研究对象,选择真空干燥和鼓风干燥两种干燥方式,避光自然吸湿、真空日晒和真空避光三种储存方式对样品进行干燥和长期储存。系统分析了不同干燥及储存条件对PBS特性黏度、熔体流动性、含水率及低聚物含量的影响。结果表明,与真空干燥相比,鼓风干燥方式可以更快速地干燥PBS样品,在干燥24 h时含水率已降至2.45‰,且样品特性黏度下降较少,熔体流动速率未有显著增加。各储存条件下,随着储存时间的延长,样品内可挥发物含量均有增加。对于黏均分子量,真空日晒对PBS样品分子量的影响显著强于避光自然吸湿。短期储存PBS样品(21 d及以内),真空避光保存可以更好地保持PBS原有的分子量、熔体流动速率,且能有效降低PBS切片中低聚物的析出。

关键词：聚丁二酸丁二酯可降解聚酯仓储条件含水率稳定性

Leather for flexible multifunctional bio-based materials: a review

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Journal of Leather Science and Engineering 2022年第1期4卷 225-240页

作者： Zhongxue Bai Xuechuan Wang Manhui Zheng Ouyang Yue long Xie Siyu zha Shuyin Dong Tong Li Yanyan Song Mengchen Huang Xinhua Liu College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and TechnologyXi’an 710021China College of Chemistry and Chemical Engineering Shaanxi University of Science and TechnologyXi’an 710021ShaanxiChina Institute of Biomass and Functional Materials Shaanxi University of Science and TechnologyXi’an 710021China.

Nowadays, diverse leather usage conditions and increasing demands from consumers challenge the leather industry. Traditional leather manufacturing is facing long-term challenges, including low-value threshold, confined applica-tion fields, and environmental issues. Leather inherits all the biomimetic properties of natural skin such as flexibility, sanitation, cold resistance, biocompatibility, biodegradability, and other cross-domain functions, achieving unre-mitting attention in multi-functional bio-based materials. Series of researches have been devoted to creating and developing leather-based flexible multi-functional bio-materials, including antibacterial leather, conductive leather, flame-retardant leather, self-cleaning leather, aromatic leather, and electromagnetic shielding leather. In this review, we provide a comprehensive overview of the commonly used leather-based functional materials. Furthermore, the possible challenges for the development of functional leathers are proposed, and expected development directions of leather-based functional materials are discussed. This review may promote and inspire the emerging preparation and applications of leather for flexible functional bio-based materials.

关键词： Bio-based materials Functional leather Leather-making Leather chemicals