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Chinese Journal of Chemistry 2023年第1期41卷 37-42页

作者： Bin Sun Lan Ling Xiaohui Zhuang Lulu Yang Jieli Yin Can Jin Collaborative innovation center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of TechnologyHangzhouZhejiang 310014China College of Pharmaceutical Sciences Zhejiang University of TechnologyHangzhouZhejiang 310014China

A photocatalyst-and metal-free radical tandem alkylation/cyclization between 1,6-dienes and redox-active esters has been devel-oped,affording a series of N-aryl pyrrolidine-2-ones in moderate to good yields.The transformation is driven by the formation of an electron-donor-acceptor(EDA)complex and a subsequent single electron transfer(SET)process.This photocatalyst-free protocol features excellent regioselectivity,mild conditions and broad substrate scope,providing a facile access to 3-alkyl-3,4-dimethyl-1-phe-nylpyrrolidin-2-one.

关键词： Alkylation Cyclization EDA Complex Pyrrolidone Photocatalysis

An attention-embedded GAN for SVBRDF recovery from a single image

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Computational Visual Media 2023年第3期9卷 551-561页

作者： Zeqi Shi Xiangyu Lin Ying Song zhejiang Sci-Tech university 2011 Collaborative Innovation Center for Garment Personal Customization of Zhejiang ProvinceHangzhou 310018China.

Learning-based approaches have made substantial progress in capturing spatially-varying bidirectional reflectance distribution functions(SVBRDFs)from a single image with unknown lighting and geometry.However,most existing networks only consider per-pixel losses which limit their capability to recover local features such as smooth glossy regions.A few generative adversarial networks use multiple discriminators for different parameter maps,increasing network complexity.We present a novel end-to-end generative adversarial network(GAN)to recover appearance from a single picture of a nearly-flat surface lit by flash.We use a single unified adversarial framework for each parameter map.An attention module guides the network to focus on details of the maps.Furthermore,the SVBRDF map loss is combined to prevent paying excess attention to specular highlights.We demonstrate and evaluate our method on both public datasets and real data.Quantitative analysis and visual comparisons indicate that our method achieves better results than the state-of-the-art in most cases.

关键词： spatially-varying bidirectional reflectance distribution function(SVBRDF) appearance capture generative adversarial network(GAN) attention mechanism

Particle agglomeration and inhibition method in the fluidized pyrolysis reaction of waste resin

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Chinese Journal of Chemical Engineering 2024年第3期67卷 135-147页

作者： Congjing Ren Peng Zhang Qi Song Zhengliang Huang Yao Yang Yongrong Yang Ningbo innovation center Zhejiang UniversityNingbo 315100China College of Chemical and Biological Engineering Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture TechnologyZhejiang UniversityHangzhou 310027China

This work investigated the pyrolysis reaction of waste resin in a fluidized bed reactor.It was found that the pyrolysis-generated ash would adhere to the surface of ceramic particles,causing particle agglomeration and defluidization.Adding kaolin could effectively inhibit the particle agglomeration during the fluidized pyrolysis reaction through physical isolation and chemical reaction.On the one hand,kaolin could form a coating layer on the surface of ceramic particles to prevent the adhesion of organic ash generated by the pyrolysis of resin.On the other hand,when a sufficient amount of kaolin(-0.2%(mass))was added,the activated kaolin could fully contact with the Na+ ions generated by the pyrolysis of resin and react to form a high-melting aluminosilicate mineral(nepheline),which could reduce the formation of low-melting-point sodium sulfate and thereby avoid the agglomeration of ceramic particles.

关键词： Pyrolysis reaction of waste resin Fluidization Particle agglomeration Kaolin

Multi-Objective Optimization of VBHF in Deep Drawing Based on the Improved QO-Jaya Algorithm

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Chinese Journal of Mechanical Engineering 2024年第1期37卷 189-202页

作者： Xiangyu Jiang Zhaoxi Hong Yixiong Feng Jianrong Tan State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Key Laboratory of Advanced Manufacturing Technology of zhejiang Province Zhejiang UniversityHangzhou 310027China Ningbo innovation center Zhejiang UniversityNingbo 315100China

Blank holder force(BHF)is a crucial parameter in deep drawing,having close relation with the forming quality of sheet metal.However,there are different BHFs maintaining the best forming effect in different stages of deep drawing.The variable blank holder force(VBHF)varying with the drawing stage can overcome this problem at an extent.The optimization of VBHF is to determine the optimal BHF in every deep drawing stage.In this paper,a new heuristic optimization algorithm named Jaya is introduced to solve the optimization efficiently.An improved“Quasi-oppositional”strategy is added to Jaya algorithm for improving population diversity.Meanwhile,an innovated stop criterion is added for better convergence.Firstly,the quality evaluation criteria for wrinkling and tearing are built.Secondly,the Kriging models are developed to approximate and quantify the relation between VBHF and forming defects under random sampling.Finally,the optimization models are established and solved by the improved QO-Jaya algorithm.A VBHF optimization example of component with complicated shape and thin wall is studied to prove the effectiveness of the improved Jaya algorithm.The optimization results are compared with that obtained by other algorithms based on the TOPSIS method.

关键词： Variable blank holder force Multi-objective optimization QO-Jaya algorithm Algorithm stop criterion

A new algorithm based on C-V characteristics to extract the epitaxy layer parameters for power devices with the consideration of termination

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Chinese Physics B 2021年第4期30卷 616-628页

作者：吴九鹏任娜盛况 College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Hangzhou innovation center Zhejiang UniversityHangzhou 311200China

Doping concentration and thickness of an epitaxy layer are the most essential parameters for power devices.The conventional algorithm extracts these two parameters by calculating the doping profile from its capacitance-voltage(C-V)characteristics.Such an algorithm treats the device as a parallel-plane junction and ignores the influence of the terminations.The epitaxy layer doping concentration tends to be overestimated and the thickness underestimated.In order to obtain the epitaxy layer parameters with higher accuracy,a new algorithm applicable for devices with field limited ring(FLR)terminations is proposed in this paper.This new algorithm is also based on the C-V characteristics and considers the extension manner of the depletion region under the FLR termination.Such an extension manner depends on the design parameters of the FLR termination and is studied in detail by simulation and modeling.The analytical expressions of the device C-V characteristics and the effective doping profile are derived.More accurate epitaxy layer parameters can be extracted by fitting the effective doping profile expression to the C-V doping profile calculated from the C-V characteristics.The relationship between the horizontal extension width and the vertical depth of the depletion region is also acquired.The credibility of the new algorithm is verified by experiments.The applicability of our new algorithm to FLR/field plate combining terminations is also discussed.Our new algorithm acts as a powerful tool for analyses and improvements of power devices.

关键词： C-V characteristics doping concentration epitaxy layer thickness field limited ring termination

Enantioselective Reductive Cross-Coupling of Aryl/Alkenyl Bromides with Benzylic Chlorides via Photoredox/Biimidazoline Nickel Dual Catalysis

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Chinese Journal of Chemistry 2022年第9期40卷 1033-1038页

作者： Tongtong Li Xiaokai Cheng Jiamin Lu Huifeng Wang Qun Fang Zhan Lu Department of Chemistry Zhejiang University 866 Yuhangtang roadHangzhouZhejiang 310058China College of Chemistry ZhengzhouUniversityZhengzhouHenan 450001China Hangzhou innovation center Zhejang UniversityHangzhouZhejiang 311200China

The asymmetric reductive arylation and alkenylation of benzylic chloride under photoredox/nickel dual catalysis using chiral bimidazoline(Bilm)ligand is reported to access 1,1-diaryl alkanes and aryl allylic compounds with good yield as well as stereo-and enantioselectivities.This protocol uses more commercially available and less expensive C(sp^(2))-Br as the electrophile coupling partner.A primary result using alkenyl chloride and alkyl chloride is also reported.Various functional groups are tolerated and the applications of this method are investigated by late-stage functionalization and gram-scale reaction.

关键词： Cross-coupling Photocatalysis Enantioselectivity Stereoselectivity Bimidazoline

Diversity of glucosinolates among common Brassicaceae vegetables in China

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Horticultural Plant Journal 2023年第3期9卷 365-380页

作者： Biao Zhu Zhile Liang Yunxiang Zang Zhujun Zhu Jing Yang Collaborative innovation center for Efficient and Green Production of Agriculture in Mountainous Areas of zhejiang Province College of Horticulture ScienceZhejiang A&F UniversityHangzhou 311300ZhejiangChina

Brassicaceae vegetables are an important traditional daily food in China and around the world, which provide nutrients and phytochemicals that are beneficial for human health. Among them, Brassica and Raphanus are widely cultivated and eaten, have been evolved and/or bred for special characteristics during the long history of cultivation. Epidemiological studies suggest that the health benefits of Brassicaceae vegetables are mainly associated with glucosinolates(GSLs) and their hydrolytic products. In this review, we discuss the diversity of common consumed Brassicaceae vegetables and their GSL composition in edible parts. We also discuss the diversity factors affecting GSL content, and the diversity roles and functions of GSL. The information in this review provides guidance for consumers to select vegetables with a high GSL content,optimum edible stages, suitable edible methods, and provides a theoretical basis for crop molecular breeding and market development of GSL products.

关键词： Brassicaceae Glucosinolates Isothiocyanates Diversity Human health

Synaptic devices based on semiconductor nanocrystals

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Frontiers of Information Technology & Electronic Engineering 2022年第11期23卷 1579-1601页

作者： Mingxuan BU Yue WANG Lei YIN Zhouyu TONG Yiqiang ZHANG Deren YANG Xiaodong PI State Key Laboratory of Silicon Materials Zhejiang UniversityHangzhou 310027China School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China Institute of Advanced Semiconductors Hangzhou Innovation CenterZhejiang UniversityHangzhou 311200China zhejiang Provincial Key Laboratory of Power Semiconductor Materials and Devices Hangzhou Innovation CenterZhejiang UniversityHangzhou 311200China

To meet a growing demand for information processing,brain-inspired neuromorphic devices have been intensively studied in recent years.As an important type of neuromorphic device,synaptic devices have attracted strong attention.Among all the kinds of materials explored for the fabrication of synaptic devices,semiconductor nanocrystals(NCs)have become one of the preferred choices due to their excellent electronic and optical properties.In this review,we first introduce the research background of synaptic devices based on semiconductor NCs and briefly present the basic properties of semiconductor NCs.Recent developments in the field of synaptic devices based on semiconductor NCs are then discussed according to the materials employed in the active layers of the devices.Finally,we discuss existing problems and challenges of synaptic devices based on semiconductor NCs.

关键词： Semiconductor nanocrystal Synaptic devices Neuromorphic computing

Yangtze River Delta Aerosol liquid water in PM_(2.5)and its roles in secondary aerosol formation at a regional site of Yangtze River Delta

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Journal of Environmental Sciences 2024年第4期138卷 684-696页

作者： Ruifang Shi Fei Zhang Yemin Shen Jiasi Shen Bingye Xu Binyu Kuang Zhengning Xu Lingling Jin Qian Tang Xudong Tian Zhibin Wang College of Environmental and Resource Sciences Zhejiang Provincial Key Laboratory of Organic Pollution Process and ControlZhejiang UniversityHangzhou 310058China ZJU-Hangzhou Global Scientific and Technological innovation center Zhejiang UniversityHangzhou 311215China zhejiang Ecological and Environmental Monitoring center Hangzhou 310012China

Aerosol liquid water content(ALWC)plays an important role in secondary aerosol formation.In this study,a whole year field campaign was conducted at Shanxi in north zhejiang Province during 2021.ALWC estimated by ISORROPIA-Ⅱ was then investigated to explore its characteristics and relationship with secondary aerosols.ALWC exhibited a highest value in spring(66.38μg/m^(3)),followed by winter(45.08μg/m^(3)),summer(41.64μg/m^(3)),and autumn(35.01μg/m^(3)),respectively.It was supposed that the secondary inorganic aerosols(SIA)were facilitated under higher ALWC conditions(RH>80%),while the secondary organic species tended to form under lower ALWC levels.Higher RH(>80%)promoted the NO_(3)^(-)formation via gas-particle partitioning,while SO_(4)^(2-)was generated at a relative lower RH(>50%).The ALWC was more sensitive to NO_(3)^(-)(R=0.94)than SO_(4)^(2-)(R=0.90).Thus,the self-amplifying processes between the ALWC and SIA enhanced the particle mass growth.The sensitivity of ALWC and OX(NO_(2)+O_(3))to secondary organic carbon(SOC)varied in different seasons at Shanxi,more sensitive to aqueous-phase reactions(daytime R=0.84;nighttime R=0.54)than photochemical oxidation(daytime R=0.23;nighttime R=0.41)in wintertime with a high level of OX(daytime:130-140μg/m^(3);nighttime:100-140μg/m^(3)).The self-amplifying process of ALWC and SIA and the aqueous-phase formation of SOC will enhance aerosol formation,contributing to air pollution and reduction of visibility.

关键词： Aerosol liquid water content Nitrate Sulfate Secondary organic compounds Aqueous-phase reaction

Preface for Special Issue: Single-Cell and Spatially Resolved Omics

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药物分析学报:英文版 2023年第7期13卷 831-832页

作者： Xiaohui Fan College of Pharmaceutical Sciences Innovation Center of Yang-tze River DeltaZhejiang UniversityHangzhou310058China

In this special issue,we are excited to present a collection of articles focusing on the emerging and rapidly evolving field of singlecell and spatially resolved omics,including epigenomics,transcriptomics,proteomics,and metabolomics.In recent years,the developmentofadvanced,high-throughput technologiessand computational methods has enabled researchers to study individual cells at an unprecedented resolution,shedding light on their heterogeneity and the complex interplay between their various molecular components.The detailed exploration of these aspects is crucial not only for a better understanding of the fundamental biology underlying cell function and organization but also for identifying novel therapeutic targets and strategies in various disease contexts.

关键词： Spatial spatially excited