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A stochastic reconstruction strategy based on a stratified library of structural descriptors and its application in the molecular reconstruction of naphtha

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Chinese Journal of Chemical Engineering 2022年第11期51卷 153-167页

作者： guangyao zhao Minglei Yang Wenli Du Feifei Shen Feng Qian Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of EducationEast China University of Science and TechnologyShanghai 200237China

Molecular reconstruction is a rapid and reliable way to provide molecular detail of petroleum fractions,which is required in the kinetic modeling of petroleum conversation processes at the molecular level.In the typical stochastic reconstruction method,the estimation of properties of pseudo molecules that are generated by Monte Carlo sampling depends on the building of predefined molecular libraries,which is expensive and inaccessible for certain petroleum fractions.In this paper,a novel stochastic reconstruction strategy is proposed,which is based on a stratified library of structural descriptors.Properties of pseudo molecules generated in the novel strategy can be directly estimated by group contribution method in the condition of lacking predefined molecular libraries.In this strategy,the molecular building diagram comprises two steps.First,the ring structure is configured by determining the number of rings.Different from the length of chain adopted in the traditional stochastic reconstruction method,in the second step,number of structural descriptors(SDs)for binding site and chain were determined sequentially for the configuration of binding site and saturated acyclic hydrocarbon chain.These structural descriptors for binding site and chain were selected from group contribution methods.To count the number of partial overlapping sections between structural descriptors for chain,two supplementary structural descriptors were created.All possible saturated structures of hydrocarbon chains can be represented by structural descriptors at the scale of property estimation.This strategy separates the building of a predefined molecule library from the stochastic reconstruction process.The exact structures of pseudo molecules represented by structural descriptors in this work can be determined with sufficient chemical knowledge.Fifty naphtha samples are tested independently to demonstrate the performance of the proposed strategy and the results show that the estimated properties were close enough to the experimental val

关键词： Novel stochastic reconstruction strategy Stratified library of structural descriptors Group contribution method

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Molecular characterization and expression analysis of Triticum aestivum squamosa-promoter binding protein-box genes involved in ear development

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Journal of Integrative Plant Biology 2014年第6期56卷 571-581页

作者： Bin Zhang Xia Liu guangyao zhao Xinguo Mao Ang Li Ruilian Jing National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop Science the Chinese Academy of Agricultural Sciences College of Bioengineering Shanxi University

Wheat （Triticum aestivum L.） is one of the most important crops in the world. Squamosa-promoter binding protein （SBP）-box genes play a critical role in regulating flower and fruit development. In this study, 10 novel SBP-box genes （TaSPL genes） were isolated from wheat （（Triticum aestivum L.） cultivar Yanzhan 4110）. Phylogenetic analysis classified the TaSPL genes into five groups （G1-G5）. The motif combinations and expression patterns of the TaSPL genes varied among the five groups with each having own distinctive characteristics： TaSPL20/21 in G1 and TaSPL17 in G2 mainly expressed in the shoot apical meristem and the young ear, and their expression levels responded to development of the ear; TaSPL6/15 belonging to G3 were upregulated and TaSPL1/23 in G4 were downregulated during grain development; the gene in G5 （TaSPL3） expressed constitutively. Thus, the consistency of the phylogenetic analysis, motif compositions, and expression patterns of the TaSPL genes revealed specific gene structures and functions. On the other hand, the diverse gene structures and different expression patterns suggested that wheat SBP-box genes have a wide range of functions. The results also suggest a potential role for wheat SBP-box genes in ear development. This study provides a significant beginning of functional analysis of SBP-box genes in wheat.

关键词： Expression profile grain yield squamosa-promoter binding protein-box genes Triticum aestivum

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Identification and Validation of a Major Quantitative Trait Locus for Slow-rusting Resistance to Stripe Rust in Wheat

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Journal of Integrative Plant Biology 2012年第5期54卷 330-344页

作者： Xiaohua Cao Jianghong Zhou Xiaoping Gong guangyao zhao Jizeng Jia Xiaoquan Qi Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of SciencesBeijing 100093China Graduate University of Chinese Academy of Sciences Beijing 100049China Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China These authors contributed equally to this article.

Stripe （yellow） rust, caused by Puccinia striiformis Westend. f. sp. tritici Eriks （Pst）, is one of the most important wheat （Triticum aestivum L.） diseases and causes significant yield losses. A recombinant inbred （RI） population derived from a cross between Yanzhan 1 and Xichang 76-9 cultivars was evaluated for resistance to wheat stripe rust strain CYR32 at both the seedling and adult plant stages. Four resistance quantitative trait loci （QTLs） were detected in this population, in which the major one, designated as Yrql, was mapped on chromosome 2DS. The strategy of using the Brachypodium distachyon genome, wheat expressed sequence tags and a draft DNA sequences （scaffolds） of the D-genome （Aegilops tauschfi Coss.） for the development of simple sequence repeat （SSR） markers was successfully used to identify 147 SSRs in hexaploid wheat. Of the 19 polymorphic SSRs in the RI population, 17 SSRs were mapped in the homeologous group 2 chromosomes near Yrql region and eight SSRs were genetically mapped in the 2.7 cM region of Yrql, providing abundant DNA markers for fine-mapping of Yrql and marker-assisted selection in wheat breeding program. The effectiveness of Yrql was validated in an independent population, indicating that this resistance QTL can be successfully transferred into a susceptible cultivar for improvement of stripe rust resistance.

关键词： Quantitative trait locus slow-rusting stripe rust wheat.

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Stretchable,skin-conformable neuromorphic system for tactile sensory recognizing and encoding

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InfoMat 2023年第12期5卷 87-99页

作者： Mengge Wu Qiuna Zhuang Kuanming Yao Jian Li guangyao zhao Jingkun Zhou Dengfeng Li Rui Shi Guoqiang Xu Yingchun Li Zijian Zheng Zhihui Yang Junsheng Yu Xinge Yu State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and EngineeringUniversity of Electronic Science and Technology of China(UESTC)Chengduthe People's Republic of China Department of Biomedical Engineering City University of Hong KongHong Kongthe People's Republic of China Laboratory for Advanced Interfacial Materials and Devices School of Fashion and TextilesThe Hong Kong Polytechnic UniversityHong Kongthe People's Republic of China Hong Kong Center for Cerebra-Cardiovascular Health Engineering Hong Kong Science ParkHong Kongthe People's Republic of China College of Science Harbin Institute of TechnologyShenzhenthe People's Republic of China Department of Pathology The Affiliated Hospital of Southwest Medical UniversityLuzhouthe People's Republic of China

Expanding wearable technologies to artificial tactile perception will be of significance for intelligent human-machine interface,as neuromorphic sensing devices are promising candidates due to their low energy consumption and highly effective operating properties.Skin-compatible and conformable features are required for the purpose of realizing wearable artificial tactile perception.Here,we report an intrinsically stretchable,skin-integrated neuromorphic system with triboelectric nanogenerators as tactile sensing and organic electrochemical transistors as information processing.The integrated system provides desired sensing,synaptic,and mechanical characteristics,such as sensitive response(~0.04 kPa^(-1))to low-pressure,short-and long-term synaptic plasticity,great switching endurance(>10000 pulses),symmetric weight update,together with high stretchability of 100%strain.With neural encoding,demonstrations are capable of recognizing,extracting,and encoding features of tactile information.This work provides a feasible approach to wearable,skin-conformable neuromorphic sensing system with great application prospects in intelligent robotics and replacement prosthetics.

关键词： neural encoding neuromorphic sensing system organic electrochemical transistors tactile sensation triboelectric nanogenerators

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基于自然容错开关表的五相永磁同步电机直接转矩控制

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中国电机工程学报 2024年第4期44卷 1618-1628,I0031页

作者：周华伟陈铖赵宇恒江光耀张多江苏大学电气信息工程学院江苏省镇江市212013

五相永磁同步电机(permanent-magnetsynchronous motor,PMSM)传统直接转矩控制(direct torque control,DTC)存在相电流畸变严重、共模电压(common-modevoltage,CMV)高、转矩和磁链脉动大等问题,且无法实现相开路故障情况下的无扰运行。为解决上述问题,提出一种基于自然容错开关表的DTC策略。该策略根据PMSM开路故障前后基电压矢量的特点以及三次平面合成电压矢量为零的原则,构建虚拟矢量(virtual vector,VV),设计故障前后同一套自然容错开关表,进而不但抑制了故障导致的转矩脉动,而且在故障前后均能降低三次谐波电流、减小转矩和磁链脉动、抑制CMV。实验结果验证所提策略的可行性。

关键词：共模电压直接转矩控制容错开关表单相开路故障永磁同步电机虚拟矢量

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基于MMC-BESS的子模块电池功率极限值分析

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中国电机工程学报 2024年第1期44卷 427-438,I0035页

作者：潘尧吴光尧孙孝峰赵巍李昕朱艳萍电力电子节能与传动控制河北省重点实验室(燕山大学) 河北省秦皇岛市066004

模块化多电平变换器(modularmultilevelconverter,MMC)是电池储能系统(batteryenergystoragesystems,BESS)功率变换的最佳选择之一。在基于模块化多电平变换器的电池储能系统(MMC-BESS)运行时,会出现子模块之间的有功功率分布不平衡情况... 详细信息

模块化多电平变换器(modularmultilevelconverter,MMC)是电池储能系统(batteryenergystoragesystems,BESS)功率变换的最佳选择之一。在基于模块化多电平变换器的电池储能系统(MMC-BESS)运行时,会出现子模块之间的有功功率分布不平衡情况,为评估系统稳定安全运行的合理性,需要对子模块功率极限值进行分析。因此,该文首先对MMC-BESS建模,分析其桥臂环流的功率传输特性,再提出相应控制策略,包括外部交流及电池功率控制和内部电容电压平衡及环流控制,可以实现相间和桥臂间功率不平衡时的稳定运行,而对于桥臂内功率不平衡,根据安秒平衡原理,从过调制角度对子模块电池功率极限值进行详细分析,得出功率极限值的计算方法。最后,通过仿真以及实验验证功率极限值分析及计算的正确性。

关键词：模块化多电平变换器电池储能系统功率不平衡功率极限值安秒平衡

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基于降方差采样策略的随机重构法

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化工学报 2024年第5期75卷 1939-1950页

作者：赵光耀杨明磊钱锋华东理工大学能源化工过程智能制造教育部重点实验室上海200237 华东理工大学过程系统工程教育部工程研究中心上海200237

在随机重构法的采样过程中,每个结构特征需要的采样数量是不相等且变化的。为了将拉丁超立方采样用于降低随机重构模型的方差,基于随机重构法采样过程的特征和拉丁超立方采样原理,提出了适用于随机重构法的新型拉丁超立方采样方法,探究... 详细信息

在随机重构法的采样过程中,每个结构特征需要的采样数量是不相等且变化的。为了将拉丁超立方采样用于降低随机重构模型的方差,基于随机重构法采样过程的特征和拉丁超立方采样原理,提出了适用于随机重构法的新型拉丁超立方采样方法,探究了在多种分子数量设定情况下应用该方法对随机重构模型的方差和精度的影响。结果表明,应用该方法能够显著降低随机重构模型的方差,提高模型的精度,在分子数量为1000~50000范围内,新模型的标准差相较传统模型降低了71.36%~74.53%,目标函数值降低了1.69%~13.82%。综合模型精度和模拟过程的运算开销,选择4000~6000作为新模型最优的分子数量设定。

关键词：随机重构法新型拉丁超立方采样方差模拟 Monte Carlo模拟

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基于用户评论的综合类政务服务APP使用满意度的影响机制质性研究

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信息资源管理学报 2024年第3期14卷 121-135页

作者：赵英邓慧丽李光耀陈诚四川大学公共管理学院成都610065 四川大学商学院成都610065 四川省发展和改革委员会成都610021

探讨综合类政务服务APP使用满意度的影响因素及其作用机制,有助于更有针对性地完善功能设计和服务流程,进而提升数字政务水平。本研究将服务接触三元模型、服务接触满意度模型等作为参照理论,采用扎根理论对29个用户评论数据集进行分析... 详细信息

探讨综合类政务服务APP使用满意度的影响因素及其作用机制,有助于更有针对性地完善功能设计和服务流程,进而提升数字政务水平。本研究将服务接触三元模型、服务接触满意度模型等作为参照理论,采用扎根理论对29个用户评论数据集进行分析,揭示出产品质量和使用情境两类共七个影响因素,并构建了三元主体模型以及过程模型。研究发现,产品质量越高、使用情境越贴近用户诉求,使用满意度越高;在使用前,使用情境中的APP推广的制度压力负向影响使用满意度;在使用中,产品质量正向影响使用满意度;在使用后,使用情境中的感知共情性正向影响使用满意度;同时,APP推广的制度压力对产品质量与使用满意度的正向关系起负向调节作用。本研究“动态”呈现了使用满意度影响因素的作用机制,丰富了管理信息系统领域过程理论和使用满意度的研究,拓展了服务接触满意度模型和制度理论等理论应用情境,可为后续使用满意度维度划分、制度压力调节作用等定量研究提供理论参考。

关键词：综合类政务服务APP 使用满意度用户评论过程研究扎根理论

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Thin,soft,skin-integrated electronics for real-time and wireless detectionof uricacid in sweat

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International Journal of Smart and Nano Materials 2023年第4期14卷 406-419页

作者： Yue Hu Lan Wang Jian Lia Yawen Yang guangyao zhao Yiming Liu Xingcan Huang Pengcheng Wu Binbin Zhang Yanli Jia Mengge Wu Shengxin Jia Qiang Zhang Guoqiang Xu Rui Shi Dengfeng Li Yingchun Li Zhengchun Peng Xinge Yu Department of Biomedical Engineering City University of Hong KongHong KongP.R.China State Key Laboratory of Radio Frequency Heterogeneous Integration(Shenzhen University) College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhenP.R.China Transfusion Department Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduP.R.China dHong Kong Center for Cerebra-Cardiovascular Health Engineering Hong Kong Science ParkNew TerritoriesHong KongP.R.China College of Science Harbin Institute of Technology(Shenzhen)ShenzhenGuangdongP.R.China CAS-CityU Joint Laboratory for Robotic Research Shenzhen Research Institute City University of Hong KongShenzhenP.R.China

Wearable sweat sensors are gaining significant attention due to their unparalleled potential for noninvasive health monitoring.Sweat,as a kind of body fluid,contains informative physiological indicators that are related to personalized health status.Advances in wearable sweat sampling and routing technologies,flexible,and stretchable materials,and wireless digital technologies have led to the development of integrated sweat sensors that are comfortable,flexible,light,and intelligent.Herein,we report a flexible and integrated wearable device via incorporating a microfluidic system and a sensing chip with skin-integrated electronic format toward in-situ monitoring of uric acid(UA)in sweat that associates with gout,cardiovascular,and renal diseases.The microfluidic system validly realizes the real-time capture perspiration from human skin.The obtained detection range is 5-200μM and the detection limit is 1.79μM,which offers an importance diagnostic method for clinical relevant lab test.The soft and flexible features of the constructed device allows it to be mounted onto nearly anywhere on the body.We tested the sweat UA in diverse subjects and various body locations during exercise,and similar trends were also observed by using a commercial UA assay kit.

关键词： Sweat sensors skinintegrated electronics in-situ detection microchannels wearable device

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Organic salt-assisted liquid-phase shear exfoliation of expanded graphite into graphene nanosheets

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Journal of Materiomics 2021年第6期7卷 1181-1189页

作者： Bin Liang Kangwei Liu Peng Liu Long Qian guangyao zhao Weisheng Pan Chaojie Chen Division of Energy and Environment Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055PR China School of Materials Science and Engineering Tsinghua UniversityBeijing100084PR China

How to improve the efficiency of liquid-phase shear exfoliation(LPSE)for mass production of large-size graphene nanosheets still remains an ongoing challenge.In this work,we have developed a LPSE method using a rotor-stator mixer.It is quite simple and efficient by exfoliation of expanded graphite(EG)in Nmethyl-2-pyrrolidone(NMP)with the assistance of organic salts including sodium citrate,potassium citrate and sodium tartrate.The LPSE of EG in NMP can provide improved yields,up to 6 times as high as values from exfoliation of natural flake graphite(NFG).The additive of organic salts in NMP can make a further improvement in graphene yields,1.5 times higher than that obtained only in NMP.Remarkably,the yields of the as-exfoliated graphene are as high as 10%under optimal conditions,and up to 50%after multiple-cycle exfoliation.Organic salts in LPSE act as analogue grinding aids enhancing the applied shear forces and thus contributing to the improved efficiency of LPSE,but they do not intercalate into the interplanar spaces of graphite.This facile LPSE method should have excellent potential in the large scale production of graphene nanosheets for numerous applications.

关键词： Graphene Liquid-phase shear exfoliation Organic salt Expanded graphite

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