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Response of drought to climate extremes in a semi-arid inland river basin in China

Journal of Arid Land 2024年第11期16卷 1505-1521页

作者： QU Zhicheng yao shunyu LIU Dongwei School of Ecology and Environment Inner Mongolia UniversityHohhot 010021China

Against the backdrop of global warming,climate extremes and drought events have become more severe,especially in arid and semi-arid *** study forecasted the characteristics of climate extremes in the Xilin River Basin(a semi-arid inland river basin)of China for the period of 2021–2100 by employing a multi-model ensemble approach based on three climate Shared Socioeconomic Pathway(SSP)scenarios(SSP1-2.6,SSP2-4.5,and SSP5-8.5)from the latest Coupled Model Intercomparison Project Phase 6(CMIP6).Furthermore,a linear regression,a wavelet analysis,and the correlation analysis were conducted to explore the response of climate extremes to the Standardized Precipitation Evapotranspiration Index(SPEI)and Streamflow Drought Index(SDI),as well as their respective trends during the historical period from 1970 to 2020 and during the future period from 2021 to *** results indicated that extreme high temperatures and extreme precipitation will further intensify under the higher forcing scenarios(SSP5-8.5>SSP2-4.5>SSP1-2.6)in the *** SPEI trends under the SSP1-2.6,SSP2-4.5,and SSP5-8.5 scenarios were estimated as–0.003/a,–0.004/a,and–0.008/a,respectively,indicating a drier future *** the historical period(1970–2020),the SPEI and SDI trends were–0.003/a and–0.016/a,respectively,with significant cycles of 15 and 22 a,and abrupt changes occurring in 1995 and 1996,*** next abrupt change in the SPEI was projected to occur in the *** SPEI had a significant positive correlation with both summer days(SU)and heavy precipitation days(R10mm),while the SDI was only significantly positively correlated with ***,the SPEI and SDI exhibited a strong and consistent positive correlation at a cycle of 4–6 a,indicating a robust interdependence between the two *** findings have important implications for policy makers,enabling them to improve water resource management of inland river basins in arid and semi-arid areas under future

关键词： climate extremes climate change Standardized Precipitation Evapotranspiration Index(SPEI) Streamflow Drought Index(SDI) wavelet analysis multi-model ensemble Xilin River Basin

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Recent Advances in Metal–Organic Frameworks Based on Electrospinning for Energy Storage

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Advanced Fiber Materials 2023年第5期5卷 1592-1617页

作者： shunyu yao Seeram Ramakrishna Gang Chen MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China Center for Nanotechnology and Sustainability Department of Mechanical EngineeringNational University of SingaporeSingapore 119260Singapore

Metal–organic frameworks are linked by different central organic ligands and metal-ion coordination bonds to form periodic pore structures and rich pore *** of their structural advantages,metal–organic frameworks are considered to be one of the most promising candidates for new energy storage *** better utilize their advantages,metal–organic frameworks can be combined with electrospinning technology to effectively adjust the porosity and mechanical strength of composite *** paper summarizes the combination of the latest metal–organic frameworks and classical spinning technology,starting from the structural design of electrode materials,and applying them to supercapacitors,lithium-ion batteries,lithium–sulfur batteries,sodium-ion batteries,and potassium-ion ***,the problems and challenges related to the preparation of metal–organic framework nanofibers are summarized,and future development trends are predicted.

关键词： Metal-organic frameworks(MOFs) Supercapacitors Electrospinning Lithium-ion batteries Sodium-ion batteries

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Inducing photocarrier separation via 3D porous faveolate cross-linked carbon to enhance photothermal/pyroelectric property

Advanced Powder Materials

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Advanced Powder Materials 2022年第3期1卷 88-98页

作者： Meng Li Jingxue Sun Gang Chen Shuang Wang shunyu yao MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

The CdS/Bi_(2)S_(3) supported three-dimensional(3D)porous faveolate carbon structure(CdS/Bi_(2)S_(3)@C)composite photocatalyst was ***_(2)S_(3) nanoparticles are regarded as photothermal agents and pyroelectric materials to absorb near infrared light(NIR)and convert it into heat.3D porous faveolate of carbon acts as incubator to reduce heat loss and optimize photothermal *** is a greater fluctuating temperature difference(ΔΤ)between photothermal effect of Bi_(2)S_(3) and cold photocatalytic *** enhances the pyroelectric effect that Bi_(2)S_(3) undergoes spontaneous polarization and releases the surface ***,the separation of electrons and holes in the CdS photocatalyst can be *** COMSOL simulation results show that,the higher pyroelectric potential producted by largerΔΤis more favorable to the photocatalytic *** hydrogen evolution rate of CdS/Bi_(2)S_(3)@C photocatalyst can reach 5.88 mmol·g^(-1)·h^(-1) with excellent cycle stability.

关键词： 3D porous faveolate structure Incubator Photothermal/pyroelectric Spontaneous polarization COMSOL simulation

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NiO nanosheet assembles for supercapacitor electrode materials

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Progress in Natural Science:Materials International 2016年第3期26卷 271-275页

作者： Huanhao Xiao shunyu yao Hongda Liu Fengyu Qu Xu Zhang Xiang Wu College of Chemistry and Chemical Engineering Harbin Normal University

In this paper, large scale hierarchically assembled Ni O nanosheets have been favorably fabricated through a facile hydrothermal route. The as-prepared Ni O nanosheet assembles were characterized in detail by various analytical techniques. The results showed these nanosheets present the thickness of about 30 nm and the surface area is 116.9 m2g-1. These NiO nanosheet assembles were used as the working electrode materials in electrochemical tests, which demonstrated a specific capacitance value of 81.67 Fg-1at the current density of 0.5 Ag-1and excellent long cycle-life stability with 78.5% of its discharge specific capacitance retention after 3000 cycles at the current density of 0.5 Ag-1, revealing the as-synthesized NiO nanosheet assembles might be a promising electrode material for supercapacitor applications.

关键词： NiO Nanosheets Electrochemical Supercapacitor electrode

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Modulating the zinc ion flux and electric field intensity by multifunctional metal-organic complex interface layer for highly stable Zn anode

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Journal of Energy Chemistry 2024年第12期99卷 375-383页

作者： Yuan Liu Lijun Wu Ping Zhang Yuexin Liu Jinpeng Wu shunyu yao Lei Wang Shiwen Gong Guidong Ju Zhicheng Yuan Renyuan Zhang School of Mechanical Engineering Tongji UniversityShanghai 201804China Institute of New Energy for Vehicles School of Materials Science and EngineeringTongji UniversityShanghai 201804China State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti ResourcesHainan UniversityHaikou 570228HainanChina Department of Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Shuangliang Eco-Energy Co. LTDWWuxi 214400JiangsuChina

The uncontrollable growth of Zn dendrites accompanied by side reactions severely impedes the industrialized process of zinc ion electrochemical energy storage ***,we propose a practical metalorganic complex interface layer to manipulate the zinc ion flux and electric field intensity,enabling highly homogeneous zinc *** zinc-terephthalic acid complex(ZnPTA)with lower adsorption energy for zinc ion(-1.3 eV)builds a zincophilic interface favoring the ordered nucleation and growth of ***,the ZnPTA layer can serve as physical barrier to protect the newly deposited Zn from corrosion in the aqueous *** modified Zn anode with the ZnPTA layer(ZnPTA@Zn)demonstrates excellent cycling stability more than 3000 h at 1 mA/cm^(2).Besides,the zinc-ion battery and zinc-ion hybrid capacitor using the ZnPTA@Zn electrode deliver outstanding cycle performance(up to 5500 cycles with high residual capacity ratio of 77.9%).This work provides a promising metal-organic complex interface design on enhancing the performance of Zn metal anode.

关键词： Metal-organic complex Artificial interface layer Zn anode Aqueous Zn-ion battery Aqueous Zn-ion hybrid capacitor

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Pattern formation in 2-μm Tm Mamyshev oscillators associated with the dissipative Faraday instability

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Photonics Research 2019年第11期7卷 1287-1295页

作者： Pan Wang shunyu yao Philippe Grelu Xiaosheng Xiao Changxi Yang State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentsTsinghua UniversityBeijing 100084China Laboratoire ICB UMR 6303 CNRS Universite Bourgogne Franche-ComteF-21078 Dijon CedexFrance

We investigate numerically the pattern formation in 2-μm thulium-doped Mamyshev fiber oscillators, associated with the dissipative Faraday instability. The dispersion-managed fiber ring oscillator is designed with commercial fibers, allowing the dynamics for a wide range of average dispersion regimes to be studied, from normal to nearzero cavity dispersion where the Benjamin–Feir instability remains inhibited. For the first time in the 2-μm spectral window, the formation of highly coherent periodic patterns is demonstrated numerically with rates up to ~100 GHz. In addition, irregular patterns are also investigated, revealing the generation of rogue waves via nonlinear collision processes. Our investigations have potential applications for the generation of multigigahertz frequency combs. They also shed new light on the dissipative Faraday instability mechanisms in the area of nonlinear optical cavity dynamics.

关键词： dynamics. Faraday dissipative

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Mitigating fast thermal instability by engineered laser sweep in AlN soliton microcomb generation

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Photonics Research 2023年第8期11卷 I0012-I0020页

作者： KEWEI LIU ZIHAO WANG shunyu yao YANAN GUO JIANCHANG YAN JUNXI WANG CHANGXI YANG CHENGYING BAO State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentsTsinghua UniversityBeijing 100084China Center for Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Research and Development Center for Solid State Lighting Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

Transient thermal instability represents a significant challenge in generating soliton *** laser sweep can be an efficient method to mitigate thermal instability,but it requires an ultrahigh laser sweep rate for crystalline microresonators with fast thermal ***,we engineer a laser sweep waveform to generate AlNon-sapphire soliton microcombs with an intermediate sweep speed(<30 GHz∕μs).Two laser sweep methods with backward plus forward tuning or two-step backward tuning added after the fast forward laser sweep were demonstrated to stabilize *** the soliton number is found to be useful to stabilize solitons in fast laser *** effectiveness of the methods was numerically *** measurements and simulations also reveal the impacts of different thermal relaxation processes occurring at quite different time scales on thermal *** requirement of the laser sweep protocols is discussed.

关键词： tuning laser sapphire

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斜向荷载作用下岩质地基基础应力分布

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哈尔滨工程大学学报 2018年第9期39卷 1526-1531页

作者：李珂阴可姚舜禹重庆大学土木工程学院重庆400044 重庆市高新工程勘察设计院有限公司重庆400047

针对含有斜向支撑或斜向传力构件的岩土体支护结构嵌岩基础存在力学机理不明晰的问题,采用斜向荷载作用下岩质地基基础模型试验与三维有限元模型的分析方法,得到了斜向荷载作用下岩质地基基础应力分布规律和基础破坏模式。通过引入Good... 详细信息

针对含有斜向支撑或斜向传力构件的岩土体支护结构嵌岩基础存在力学机理不明晰的问题,采用斜向荷载作用下岩质地基基础模型试验与三维有限元模型的分析方法,得到了斜向荷载作用下岩质地基基础应力分布规律和基础破坏模式。通过引入Goodman层状岩体内应力求解中的等效各向同性介质理论对基础压应力核心体边界进行了求解;在Southwell基本方程基础上通过Hankel积分变换对压应力核心体边界计算中的主要参数kn与ks的理论算法进行了推导。本文通过对比理论计算与三维有限元分析结论,验证了基于等效各向同性介质理论提出的基础压应力核心体边界和参数kn与ks的理论计算方法,得到了斜向荷载作用下岩质地基基础应力分布的特点及其应力边界求解方法,为岩质地基基础的内应力后续研究与设计提供了理论依据。

关键词：斜向荷载岩质地基基础应力分布压应力核心体法向刚度切向刚度

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论“互联网+”商业模式专利保护的制度设计

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科技进步与对策 2022年第17期39卷 114-122页

作者：姚舜禹武汉大学法学院湖北武汉430072

“互联网+”商业模式日益成为我国市场经济发展的强劲发动机,有必要对其进行保护,而专利保护应作为主要方式。目前相关法律保护制度无法充分覆盖商业模式保护,需要重新进行制度设计。我国“互联网+”商业模式专利保护的制度设计,应坚持... 详细信息

“互联网+”商业模式日益成为我国市场经济发展的强劲发动机,有必要对其进行保护,而专利保护应作为主要方式。目前相关法律保护制度无法充分覆盖商业模式保护,需要重新进行制度设计。我国“互联网+”商业模式专利保护的制度设计,应坚持静态与动态相结合的总体观察视角,以利益的冲突、衡量与选择作为核心设计理念。具体而言,应以专利法律为主,配套政策文件为辅,构建商业模式知识创新与利用的整体政策体系;在商业模式专利审查范围扩大的情况下,应当严格专利审查标准,尤其是严格创造性标准的审查;采用特别保护制度进行辅助,比如短期专利制度等特别措施;建立商业模式专利人才体系培养机制,探寻商业模式专利保护的国际合作机制,坚定维护我国国家社会利益,促进经济社会整体发展与繁荣。

关键词：商业模式互联网+ 专利保护制度设计专利审查

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基于数据流通限制的反垄断规制研究

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财经理论与实践 2024年第5期45卷 152-160页

作者：姚舜宇彭莉厦门大学台湾研究院福建厦门361005

巨型平台经营者通过构建平台聚合生态系统,利用网络效应、规模经济以及数据获取壁垒等方式加大对数据流通渠道的控制力度,挤压竞争者的发展空间,最终在多个关联市场中获得市场力量和垄断地位。基于对已有规范实践的考察以及数据流通限... 详细信息

巨型平台经营者通过构建平台聚合生态系统,利用网络效应、规模经济以及数据获取壁垒等方式加大对数据流通渠道的控制力度,挤压竞争者的发展空间,最终在多个关联市场中获得市场力量和垄断地位。基于对已有规范实践的考察以及数据流通限制的经济效果分析可以发现,数据流通限制不仅增加了中小平台经营者的数据收集、分析以及利用成本,还有可能产生阻却中小平台经营者突破数字市场壁垒、损害消费者价格与选择权益以及抑制创新动能等竞争限制效果。因此,数据流通限制状态应受到反垄断规制的高度重视。

关键词：数据驱动数据流通反垄断规制市场壁垒

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