检索结果-南通市图书馆

Development Paths for China's Transport Sector under the Carbon Neutrality Goal

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Urban and Environmental Studies 2022年第2期10卷 41-56页

作者： OU Xunmin yuan zhiyi Institute of Energy Environment and Economy Tsinghua University Tsinghua-Rio Tinto Joint Research Centre for Resources Energy and Sustainable Development Laboratory for Low Carbon Energy Tsinghua University

The greenhouse gas emissions from China’s transport sector,which account for a large proportion of China’s total greenhouse gas emissions,are still increasing ***,low-carbon transformation is urgently needed in China’s transport *** paper provides an overview of the situation and features of greenhouse gas emissions from China’s transport sector,and proposes carbon-neutral development paths for the transport sector based on current national policies,goals and previous *** needs to work on many aspects,including transport restructuring,alternative fuel technologies and energy efficiency improvement,to achieve near-zero emission goals by *** the carbon neutrality goal,China’s transport sector should strive to reach the carbon peaking by 2030,and limit carbon emissions within 100 million tons by 2060.

关键词： Transport sector carbon neutrality near-zero emissions

Ambient White-Light Afterglow Emission Based on Triplet-to-Singlet Förster Resonance Energy Transfer

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

CCS Chemistry 2022年第1期4卷 173-181页

作者： Huiqiang Gui Zizhao Huang zhiyi yuan Xiang Ma Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Frontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237

Compared with fluorescent materials,metal-free organic environmental afterglow materials,with larger Stokes shifts,longer lifetimes,higher S/N ratios,and sensitivities,present potential in new ***,achieving air stability and long lifetime organic afterglow systems with tunable emission color still remains a ***,we have designed and synthesized luminescent copolymers exhibiting afterglow emission with tunability including white-light afterglow with considerable quantum yield[Commission Internationale de l’Eclairage(CIE)coordinates(0.32,0.33),ΦP=11%]in the amorphous state through the rarely reported triplet-to-singlet Förster resonance energy transfer(TS-FET).Also,they can emit different colors under UV light,including white-light[CIE coordinates(0.31,0.33),ΦPl=27%].This strategy was achieved by copolymerizing two simple-structured single-benzene-based compounds with acrylamide(AM)in different *** addition,these materials can also be employed as a safety ink for paper paving the way for long lifetime luminescent material applications.

关键词： triplet-to-singlet Förster resonance energy transfer fluorescence metal-freeorganic afterglow white-light afterglow white photoluminescence

Peak C0_(2)emission in the region dominated by coal use and heavy chemical industries:a case study of Dezhou city in China

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

Frontiers in Energy 2020年第4期14卷 740-758页

作者： Sheng ZHOU Maosheng DUAN zhiyi yuan Xunmin OU Institute of Energy Environment and EconomyTsinghua UniversityBeijing 100084China China Automotive Energy Research Center Tsinghua UniversityBeijing 100084China

This paper studies the pathways of peakingCO_(2) emissions of Dezhou city in China, by employing abottom-up sector analysis model and considering futureeconomic growth, the adjustment of the industrialstructure, and the trend of energy intensity. Two scenarios(a business-as-usual (BAU) scenario and a CO_(2) mitigationscenario (CMS)) are set up. The results show that in theBAU scenario, the final energy consumption will peak at25.93 million tons of coal equivalent (Mtce) (16% growthversus 2014) in 2030. In the CMS scenario, the finalenergy will peak in 2020 at 23.47 Mtce (9% lower versuspeak in the BAU scenario). The total primary energyconsumption will increase by 12% (BAU scenario) anddecrease by 3% (CMS scenario) in 2030, respectively,compared to that in 2014. In the BAU scenario, CO_(2)emission will peak in 2025 at 70 million tons of carbondioxide (MtCO_(2)), and subsequently decrease gradually in2030. In the CMS scenario, the peak has occurred in 2014,and 60 MtCO_(2) will be emitted in 2030. Active policiesincluding restructuring the economy, improving energyefficiency, capping coal consumption, and using more low・carbon /carbon free fuel are recommended in Dezhou citypeaked CO_(2) emission as early as possible.

关键词： carbon dioxide emission energy consumption peak CO_(2)emission low-carbon transition Dezhou city China

Methanol Dynamically Activated Room-Temperature Phosphorescence from a Twisted 4-Bromobiphenyl System

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

CCS Chemistry 2020年第3期2卷 158-167页

作者： zhiyi yuan Jie Wang Lu Chen Lei Zou Xueqing Gong Xiang Ma Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237

Crystal engineering is employed widely in developing metal-free room-temperature phosphorescence(RTP)materials,buttheweakresponsiveness inrigid stateand poor selectivity during crystallization limit the research of RTP materials with specific recognition ***,based on multicomponent crystallization and the deformation of phosphor,we have developed a galactose-functionalized polyhydric compound(BHB)with a twisted 4-bromobiphenyl structure,to realize methanol selectively activated“off–on”RTP *** molecules selectively formed solvate with BHB and rigidified the crystal structure by enriching intermolecular noncovalent ***,the distortion of the biphenyl group facilitated the intersystem crossing process effectively,alongside the heavy-atom effect from the bromo substitute,thereby,activating the RTP of *** our current research approach realizes RTPmaterials with selective recognition function by controlling multiple noncovalent interactions such as hydrogen and halogen bonding of molecular systems with structurally distorted phosphors.

关键词： room-temperature phosphorescence methanol identification structure deformation solvate

Multi-component joint inversion of gravity gradient based on fast forward calculation

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

Global Geology 2017年第3期20卷 176-183页

作者： yuan zhiyi ZENG Zhaofa JIANG Dandan HUAI Nan ZHOU Fei College of Geo-Exploration Science and Technology Jilin University Changchun 130026 China

With the development of gravity gradient full tensor measurement technique,three-dimensional( 3D) inversion based on gravity gradient tensor can provide more accurate information. But the forward calculation of 3D full tensor sensitivity matrix is very time-consuming,which restricts its development and *** to the symmetry of the kernel function,the authors reconstruct the underground source of geological body to avoid repeat computation of the same value,and work out the corresponding relationship between the response of geological body to the observation point and the response of reconstructed geological body to the observation point. According to the relationship,rapid calculation of full tensor gravity sensitivity matrix can be achieved. The model calculation shows that this method can increase the speed of 30-45 times compared with the traditional calculation method. The sensitivity matrix is applied to the multi-component inversion of gravity gradient. The application of this method on the measured data provides the basis for the promotion of the method.

关键词： rapid forward calculation full tensor gravity survey joint inversion inexact line search FR conjugate gradient method

Probing the Nucleation and Growth Kinetics of Bismuth Nanoparticles via In-situ Transmission Electron Microscopy

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2024年第4期39卷 877-887页

作者：王浪李超凡 RAN Maojin yuan Manman 胡执一 LI Yu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Nanostructure Research Centre(NRC) Wuhan University of TechnologyWuhan 430070China Institute of Chemistry Henan Academy of SciencesZhengzhou 450002China Henan Academy of Sciences Zhengzhou 450046China

The nucleation and growth mechanism of nanoparticles is an important theory,which can guide the preparation of ***,it is still lacking in direct observation on the details of the evolution of intermediate state structure during nucleation and *** this work,the evolution process of bismuth nanoparticles induced by electron beam was revealed by in-situ transmission electron microscopy(TEM)at atomic *** experimental results demonstrate that the size,stable surface and crystallographic defect have important influences on the growth of Bi *** non-classical growth paths including single crystal growth and polycrystalline combined growth,as well as,corresponding layer-by-layer growth mechanism along{012}stable crystal plane of Bi nanoparticles with dodecahedron structure were revealed by in-situ TEM *** results provide important guidance and a new approach for in-depth understanding of the nucleation and growth kinetics of nanoparticles.

关键词： bismuth nanoparticles crystal growth transmission electron microscopy in-situ electron microscopy

Dynamic photonic barcodes for molecular detection based on cavity-enhanced energy transfer

在线全文

学校读者我要写书评

暂无评论

Advanced Photonics 2020年第6期2卷 69-77页

作者： Yunke Zhou zhiyi yuan Xuerui Gong Muhammad D.Birowosuto Cuong Dang Yu-Cheng Chen Nanyang Technological University School of Electrical and Electronic EngineeringSingapore CINTRA UMI CNRS/NTU/THALES Singapore Nanyang Technological University School of Chemical and Biomedical EngineeringSingapore

Optical barcodes have demonstrated a great potential in multiplexed bioassays and cell tracking for their distinctive spectral *** vast majority of optical barcodes were designed to identify a specific target by fluorescence emission spectra,without being able to characterize dynamic changes in response to analytes through *** overcome these limitations,the concept of the bioresponsive dynamic photonic barcode was proposed by exploiting interfacial energy transfer between a microdroplet cavity and binding ***-gallery modes resulting from cavity-enhanced energy transfer were therefore converted into photonic barcodes to identify binding activities,in which more than trillions of distinctive barcodes could be generated by a single *** spectral barcoding was achieved by a significant improvement in terms of signal-to-noise ratio upon binding to target *** studies and experiments were conducted to elucidate the effect of different cavity sizes and analyte *** fluorescence lifetime was implemented to investigate the role of radiative and non-radiative energy ***,microdroplet photonic barcodes were employed in biodetection to exhibit great potential in fulfilling biomedical applications.

关键词： whispering-gallery modes optical barcodes fluorescence resonance energy transfer molecular sensing biointerface cavity-enhancement

Lasing action in microdroplets modulated by interfacial molecular forces

在线全文

学校读者我要写书评

暂无评论

Advanced Photonics 2021年第1期3卷 82-92页

作者： Zhen Qiao Xuerui Gong Peng Guan zhiyi yuan Shilun Feng Yiyu Zhang Munho Kim Guo-En Chang Yu-Cheng Chen Nanyang Technological University School of Electrical and Electronic Engineering Shanghai Jiao Tong University School of Electronic Information and Electrical Engineering Chinese Academy of Sciences Shanghai Institute of Microsystem and Information TechnologyState Key Laboratory of Transducer Technology Taiwan Chung Cheng University Department of Mechanical Engineering Nanyang Technological University School of Chemical and Biomedical Engineering

Liquid droplets offer a great number of opportunities in biochemical and physical research studies in which droplet-based microlasers have come into play over the past decade. While the recent emergence of droplet lasers has demonstrated their powerful capabilities in amplifying subtle molecular changes inside the cavity, the optical interactions between droplet resonators and an interface remain unclear. We revealed the underlying mechanism of droplet lasers when interacting with a droplet–solid interface and explored its correlation with intermolecular forces. A vertically oriented oscillation mode—arc-like mode—was discovered, where the number of lasing modes and their Q-factors increase with the strength of interfacial hydrophobicity. Both experimental and theoretical results demonstrated that hydrophobicity characterized by contact angle and interfacial tension plays a significant role in the geometry of droplet cavity and laser mode characteristics. Finally, we demonstrated how tiny forces induced by proteins and peptides could strongly modulate the lasing output in droplet resonators. Our findings illustrate the potential of exploiting optical resonators to amplify intermolecular force changes, providing comprehensive insights into lasing actions modulated by interfaces and applications in biophysics.

关键词： microlaser droplet resonator intermolecular forces biointerface lasing action hydrophobicity

Comprehensive report on China's Long-Term Low-Carbon Development Strategies and Pathways

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Population,Resources and Environment 2020年第4期18卷 263-295页

作者： Jiankun He Zheng Li Xiliang Zhang Hailin Wang Wenjuan Dong Shiyan Chang Xunmin Ou Siyue Guo Zhiyu Tian Alun Gu Fei Teng Xiu Yang Siyuan Chen Mingtao Yao zhiyi yuan Li Zhou Xiaofan Zhao Institute of Climate Change and Sustainable Development Tsinghua UniversityBeijing100084China Institute of Energy Environment and EconomyTsinghua UniversityBeijing100084China Energy Research Institute Chinese Academy of Macroeconomic ResearchBeijing100038China Department of Energy and Power Engineering Tsinghua UniversityBeijing100084China Division of Public Policy Hong Kong University of Science and TechnologyHong KongChina

*** 2020 is an unusual year in which the COVID-19 pandemic has raged through the globe,infecting tens of millions of people and killing hundreds of *** pandemic has not only wreaked havoc on public health systems,economic activities,and people's lives,but also has greatly affected and will continue to reshape the world's political,economic,and trade patterns.

关键词： hundreds continue economic