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Rare Metals 2023年第3期42卷 971-981页

作者： San-Can Han Jia-Le quan Fu-Guo zhou Yu-hua Xue Na Li Feng-Yu Li Ding Wang School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China

Three-dimensional(3D)functional graphenebased architecture with superior electrical conductivity and good mechanical strength has promising applications in energy storage and ***-adjustable inks make it possible to achieve desired 3D architectures with interconnected and continuous interior networks by microextrusion *** this work,ultra-low-concentration graphene oxide(GO)inks of~15 mg·ml-1 have been obtained and demonstrated in direct 3D printing with a facile cross-linking(direct ink writing).The rheological behavior of the GO strategy by cations,which is the lowest concentration to achieve direct ink writing inks,could be adjusted from 1×10^(4) to 1×10^(5) Pa·s^(-1) with different concentrations of cations due to strong cross-linking networks between GO sheets and ***,the specific strength and electrical conductivity of 3D-printed graphene architecture are notably enhanced,reaching up to 51.7×10^(3) N·m·kg^(-1)and 119 S·m^(-1),which are superior to conventional graphene ***,3D printing graphene-based architecture assembled in micro-superc apacitor exhibits excellent electrochemical performance,which can be ascribed to the effective ion transportation through the interconnected *** strategy demonstrated is useful in the design of complex-shaped,graphene-based architectures for scalable manufacturing of practical energy storage applications.

关键词： Three-dimensional(3D)printing Graphene oxide(GO)inks Cross-linking strategy Graphene-based architecture

Highly efficient semiconductor modules making controllable parallel microchannels for non-compressible hemorrhages

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Bioactive Materials 2024年第6期36卷 30-47页

作者： Fengbo Yang Xiaoli Jia Chao hua Feifan zhou Jianing hua Yuting Ji Peng Zhao quan Yuan Malcolm Xing Guozhong Lyu Engineering Research Center of the Ministry of Education for Wound Repair Technology Jiangnan UniversityAffiliated Hospital of Jiangnan UniversityWuxi214000China Wuxi School of Medicine Jiangnan UniversityWuxi214000China Medical School of Nantong University Nantong226019China Department of Critical Care Medicine Affiliated Hospital of Jiangnan UniversityWuxi 214000China Burn&Trauma Treatment Center Affiliated Hospital of Jiangnan UniversityWuxi 214000China State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengdu610041SichuanChina Department of Mechanical Engineering University of ManitobaWinnipegR3T 2N2Canada

Nature makes the most beautiful solution to involuted *** them,the parallel tubular structures are capable of transporting fluid quickly in plant trunks and leaf stems,which demonstrate an ingenious evolutionary *** study develops a mini-thermoelectric semiconductor P-N module to create gradient and parallel channeled *** modules decrease quickly the temperature of polymer solution from 20◦C to􀀀20◦C within 5 *** addition to the exceptional liquid absorption rate,the foams exhibited shape memory *** mini device universally makes the inspired structure in such as chitosan,gelatin,alginate and polyvinyl ***-compressible hemorrhages are the primary cause of death in *** rapid liquid absorption leads to fast activation of coagulation,which provides an efficient strategy for hemostasis *** demonstrated this by using our semiconductor modules on collagen-kaolin parallel channel foams with their high porosity(96.43%)and rapid expansion rate(2934%).They absorb liquid with 37.25 times of the own weight,show 46.5-fold liquid absorption speed and 24-fold of blood compared with random porous *** superior properties lead to strong hemostatic performance in vitro and in vivo.

关键词： Parallel microchannel Thermoelectric semiconductors Ice template Hemorrhage

On the validity of the Boltzmann–BGK model through relaxation evaluation

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Acta Mechanica Sinica 2014年第2期30卷 133-143页

作者： quan-hua Sun Chun-Pei Cai Wei Gao State Key Laboratory of High Temperature Gas Dynamics Institute of MechanicsChinese Academy of Sciences Department of Mechanical and Aerospace Engineering New Mexico State University

The Boltzmann-Bhatnagar-Gross-Krook（BGK）model is investigated for its validity regarding the collision term approximation through relaxation evaluation. The evaluation is based on theoretical analysis and numerical comparison between the BGK and direct simulation Monte Carlo（DSMC） results for three specifically designed relaxation problems. In these problems, one or half component of the velocity distribution is characterized by another Maxwellian distribution with a different temperature. It is analyzed that the relaxation time in the BGK model is unequal to the molecular mean collision time. Relaxation of component distribution fails to involve enough contribution from other component distributions, which makes the BGK model unable to capture details of velocity distribution, especially when discontinuity exists in distribution. The BGK model,however, predicts satisfactory results including fluxes during relaxation when the temperature difference is small. Particularly, the model-induced error in the BGK model increases with the temperature difference, thus the model is more reliable for low-speed rarefied flows than for hypersonic flows.

关键词： BGK model Boltzmann equation Validity evaluation DSMC method Time relaxation

Calculating the Climatology and Anomalies of Surface Cloud Radiative Effect Using Cloud Property Histograms and Cloud Radiative Kernels

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Advances in Atmospheric Sciences 2022年第12期39卷 2124-2136页

作者： Chen zhou Yincheng LIU quan WANG School of Atmospheric Sciences Nanjing UniversityNanjing 210093China

Cloud radiative kernels(CRK)built with radiative transfer models have been widely used to analyze the cloud radiative effect on top of atmosphere(TOA)fluxes,and it is expected that the CRKs would also be useful in the analyses of surface radiative fluxes,which determines the regional surface temperature change and *** this study,CRKs at the surface and TOA were built using the Rapid Radiative Transfer Model(RRTM).Longwave cloud radiative effect(CRE)at the surface is primarily driven by cloud base properties,while TOA CRE is primarily decided by cloud top *** this reason,the standard version of surface CRK is a function of latitude,longitude,month,cloud optical thickness(τ)and cloud base pressure(CBP),and the TOA CRK is a function of latitude,longitude,month,τand cloud top pressure(CTP).Considering that the cloud property histograms provided by climate models are functions of CTP instead of CBP at present,the surface CRKs on CBP-τhistograms were converted to CTP-τfields using the statistical relationship between CTP,CBP andτobtained from collocated CloudSat and MODIS *** both climate model outputs and satellites observations,the climatology of surface CRE and cloud-induced surface radiative anomalies calculated with the surface CRKs and cloud property histograms are well correlated with those calculated from surface radiative *** cloud-induced surface radiative anomalies reproduced by surface CRKs and MODIS cloud property histograms are not affected by spurious trends that appear in Clouds and the Earth's Radiant Energy System(CERES)surface irradiances products.

关键词： cloud radiative kernel surface radiative flux cloud feedback cloud properties cloud top pressure cloud base pressure

杜仲的生物学功能及其在水产动物生产中的应用

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南京农业大学学报 2025年第1期48卷 58-69页

作者：杨航袁泉吕巍巍黄伟伟胡炜周文宗上海市农业科学院生态环境保护研究所上海201403 上海市农业科学院农业农村部稻渔综合种养生态重点实验室上海201403 中国科学院水生生物研究所淡水生态与生物技术国家重点实验室湖北武汉430072

杜仲作为一种药食同源植物,含有木脂素类、环烯醚萜类、苯丙素类、黄酮类及多糖等100余种活性成分,具有强筋健骨,降血压、血脂、血糖以及抗菌、抗炎、抗氧化和保肝护肾等多种药理作用。近些年,随着绿色养殖业的发展,逐渐应用到水产养殖... 详细信息

杜仲作为一种药食同源植物,含有木脂素类、环烯醚萜类、苯丙素类、黄酮类及多糖等100余种活性成分,具有强筋健骨,降血压、血脂、血糖以及抗菌、抗炎、抗氧化和保肝护肾等多种药理作用。近些年,随着绿色养殖业的发展,逐渐应用到水产养殖动物中并发现多种有益效果。本文综述了杜仲皮和叶的主要营养成分、生物活性成分和生物学功能,及其添加在不同水产养殖品种饲料中促进生长、改善肉质、糖脂代谢能力以及提高机体抗氧化和免疫功能等应用研究进展,探讨了杜仲作为水产饲料原料以及添加剂的可行性,分析了其在实际应用过程中存在的问题及挑战,以期为进一步促进杜仲在动物生产中的研究提供依据。

关键词：杜仲生物学功能水生动物生产应用

A 2-Stage Strategy for Non-Stationary Signal Prediction and Recovery Using Iterative Filtering and Neural Network

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Journal of Computer Science & Technology 2019年第2期34卷 318-338页

作者： Feng zhou Hao-Min zhou Zhi-hua Yang Li-hua Yang School of Information Science Guangdong University of Finance and Economics Guangzhou 510320 China School of Mathematics Georgia Institute of Technology Atlanta GA 30332 U.S.A. Guangdong Province Key Laboratory of Computational Science Guangzhou 510275 China School of Mathematics Sun Yat-sen University Guangzhou 510275 China

Predicting the future information and recovering the missing data for time series are two vital tasks faced in various application *** are often subjected to big challenges,especially when the signal is nonlinear and nonstationary which is common in *** this paper,we propose a hybrid 2-stage approach,named IF2FNN,to predict(including short-term and long-term predictions)and recover the general types of time *** the first stage,we decompose the original non-stationary series into several“quasi stationary”intrinsic mode functions(IMFs)by the iterative filtering(IF)*** the second stage,all of the IMFs are fed as the inputs to the factorization machine based neural network model to perform the prediction and *** test the strategy on five datasets including an artificial constructed signal(ACS),and four real-world signals:the length of day(LOD),the northern hemisphere land-ocean temperature index(NHLTI),the troposphere monthly mean temperature(TMMT),and the national association of securities dealers automated quotations index(NASDAQ).The results are compared with those obtained from the other prevailing *** experiments indicate that under the same conditions,the proposed method outperforms the others for prediction and recovery according to various metrics such as mean absolute error(MAE),root mean square error(RMSE),and mean absolute percentage error(MAPE).

关键词： iterative filtering factorization machine neural network time series data recovery

Rehearsal:learning from prediction to decision

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Frontiers of Computer Science 2022年第4期16卷 1-3页

作者： Zhi-hua zhou National Key Laboratory for Novel Software Technology Nanjing UniversityNanjing210023China

Machine learning[1]studies focus mostly on prediction,where a model is built from a set of observational data formaking correct predictions on unseen *** has beenaddressed very well by modem techniques such as deeplea... 详细信息

关键词： such has see

A brief introduction to weakly supervised learning

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National Science Review 2018年第1期5卷 44-53页

作者： Zhi-hua zhou National Key Laboratory for Novel Software Technology Nanjing University

Supervised learning techniques construct predictive models by learning from a large number of training examples, where each training example has a label indicating its ground-truth output. Though current techniques have achieved great success; it is noteworthy that in many tasks it is difficult to get strong supervision information like fully ground-truth labels due to the high cost of the data-labeling process. Thus,it is desirable for machine-learning techniques to work with weak supervision. This article reviews some research progress of weakly supervised learning, focusing on three typical types of weak supervision:incomplete supervision, where only a subset of training data is given with labels; inexact supervision, where the training data are given with only coarse-grained labels; and inaccurate supervision, where the given labels are not always ground-truth.

关键词： machine learning weakly supervised learning supervised learning

The Ergodicity of a Class of Almost Anosov Systems

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Acta Mathematica Sinica,English Series 2013年第1期29卷 193-198页

作者： Yun hua zhou College of Mathematics and Statistics Chongqing University

In this paper, we prove that some volume-preserving almost Anosov systems are ergodic if they are essentially accessible. The key idea is that there are stable and unstable manifolds with uniform size on the orbits Of... 详细信息

关键词： Ergodicity almost Anosov essential accessibility

quantum model for understanding protein misfolding behavior——phase diagram and manual intervention

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Science China(Physics,Mechanics & Astronomy) 2021年第6期64卷 10-16页

作者： Wen-Wen Mao Li-hua Lu You-quan Li Zhejiang Province Key Laboratory of quantum Technology&Device and Department of Physics Zhejiang UniversityHangzhou 310027China Collaberative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210008China

The study of protein folding is fundamental and important in the multidisciplinary field because a diversity of diseases,like Alzheimer’s and Parkinson’s are relevant to protein *** current thermodynamic and geometric approaches only phenomenologically describe but do not provide a mechanistic understanding of the competition between correct folding and *** we present a model to understand the misfolding *** the influence of dissipative strength for all possible sequences and comparing the folding time toward different compact structures,we obtain a phase diagram of the dissipative quantum phase transition that enables us to model the *** also investigate how a perturbation in the Hamiltonian affects the transition point,which motivates us to explore possible manual *** results indicate that the manual intervention may be effective for some specific sequence but not for *** approach is expected to lay a foundation for further studies on manual intervention in protein misfolding.

关键词： quantum phase diagram quantum walk mean first-passage time protein folding