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Ion adsorption components in liquid/solid systems

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Journal of Environmental Sciences 2006年第6期18卷 1167-1175页

作者： WU Xiao-fu HU Yue-li zhao Fang HUANG Zhong-zi LEI Dian College of Resource and Environment Central South University of Forestry and Technology Changsha 410004 China

Experiments on Zn^2＋ and Cd^2＋ adsorptions on vermiculite in aqueous solutions were conducted to investigate the widely observed adsorbent concentration effect on the traditionally defined adsorption isotherm in the adsorbate range 25--500 mg/L and adsorbent range 10--150 g/L. The results showed that the equilibrium ion adsorption density did not correspond to a unique equilibrium ion concentration in liquid phase. Three adsorbate/adsorbent ratios, the equilibrium adsorption density, the ratio of equilibrium adsorbate concentration in liquid phase to adsorbent concentration, and the ratio of initial adsorbate concentration to adsorbent concentration, were found to be related with unique values in the tested range. Based on the assumption that the equilibrium state of a liquid/solid adsorption system is determined by four mutually related components： adsorbate in liquid phase, adsorbate in solid phase, uncovered adsorption site and covered adsorption site, and that the equilibrium chemical potentials of these components should be equalized, a new model was presented for describing ion adsorption isotherm in liquid/solid systems. The proposed model fit well the experimental data obtained from the examined samples.

关键词： adsorbent effect adsorbate/adsorbent ratio adsorption component chemical potential Zn^2+ Cd^2+ vermiculite

Key challenges to the development of extracorporeal bioartificial liver support systems

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Hepatobiliary & Pancreatic Diseases International 2012年第3期11卷 243-249页

作者： li-fu zhao, Xiao-Ping Pan and Lan-Juan li State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China State Key Laboratory for Diagnosis and Treatment of Infectious Diseases First Affiliated Hospital Zhejiang University School of Medicine Hangzhou 310003 China

BACKGROUND: For nearly three decades, extracorporeal bioartificial liver (BAL) support systems have been anticipated as promising tools for the treatment of liver failure. However, these systems are still far from clinical application. This review aimed to analyze the key challenges to the development of BALs. DATA SOURCE: We carried out a PubMed search of Englishlanguage articles relevant to extracorporeal BAL support systems and liver failure. RESULTS: Extracorporeal BALs face a series of challenges. First, an appropriate cell source for BAL is not readily available. Second, existing bioreactors do not provide in vivolike oxygenation and bile secretion. Third, emergency needs cannot be met by current BALs. Finally, the effectiveness of BALs, either in animals or in patients, has been difficult to document. CONCLUSIONS: Extracorporeal BAL support systems are mainly challenged by incompetent cell sources and flawed bioreactors. To advance this technology, future research is needed to provide more insights into interpreting the conditions for hepatocyte differentiation and liver microstructure formation.

关键词： bioartificial liver liver failure cell source bioreactor

A Teleoperation System Based on Predictive Simulation and Its Application to Spacecraft Maintenance

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International Journal of Plant Engineering and Management 2008年第1期13卷 1-9页

作者： li Ming-fu li Shi-qi zhao Di ZHU Wen-ge School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China

A teleoperation system based on predictive simulation is proposed for the sake of compensating the large time delay in the process of teleoperation to a degree and providing a friendly operating interface. The framework and function architecture of the system is discussed firstly. Then, the operator interface and a graphics simulation system is described in detail. furthermore, a predictive algorithm aiming at position control based teleoperation is studied in our research, and the relative framework of predictive simulation is discussed. Finally, the system is applied to spacecraft breakdown maintenance; multi-agent reinforcement learning based semi-autonomous teleoperation is discussed at the same time for safe operation.

关键词： teleoperation predictive simulation virtual reality reinforcement learning

In-plane excitation of a topological nanophotonic corner state at telecom wavelengths in a cross-coupled cavity

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Photonics Research 2021年第8期9卷 1423-1431页

作者： XIN-TAO HE MENG-YU li HAO-YANG QIU WEN-SHENG RUAN li-DAN ZHOU liN liU XIAO-DONG CHEN WEN-JIE CHEN fu-li zhao JIAN-WEN DONG State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen UniversityGuangzhou 510275China School of Physics Sun Yat-sen UniversityGuangzhou 510275China

In silicon photonics,the cavity mode is a fundamental mechanism to design integrated passive devices for on-chip optical information ***,the corner state in a second-order topological photonic crystal(PC)rendered a global method to achieve an intrinsic cavity *** is crucial to explore such a topological corner state in silicon photonic integrated circuits(PICs)under in-plane ***,we study both theoretically and experimentally the topological nanophotonic corner state in a silicon-on-insulator PC cavity at a telecommunications *** theory,the expectation values of a mirror-flip operation for the Bloch modes of a PC slab are used to characterize the topological *** from topologically distinct bulk polarizations of two types of dielectric-vein PCs,the corner state is induced in a 90-deg-bend interface,localizing at the corner point of real space and the Brillouin zone boundary of reciprocal *** implement in-plane excitation in an experiment,we fabricate a cross-coupled PC cavity based on the bend interface and directly image the corner state near 1383 nm using a far-field ***,by means of the temporal coupled-mode theory,the intrinsic Q factor of a cross-coupled cavity(about 8000)is retrieved from the measured transmission *** work gives deterministic guidance and potential applications for cavity-mode-based passive devices in silicon PICs,such as optical filters,routers,and multiplexers.

关键词： passive polarization cavity

Ultra-wide FOV meta-camera with transformer-neural-network color imaging methodology

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Advanced Photonics 2024年第5期6卷 35-44页

作者： Yan liu Wen-Dong li Kun-Yuan Xin Ze-Ming Chen Zun-Yi Chen Rui Chen Xiao-Dong Chen fu-li zhao Wei-Shi Zheng Jian-Wen Dong Sun Yat-sen University School of Physics State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen University School of Computer Science and Engineering

Planar cameras with high performance and wide field of view(FOV) are critical in various fields,requiring highly compact and integrated technology. Existing wide FOV metalenses show great potential for ultrathin optical components, but there is a set of tricky challenges, such as chromatic aberrations correction,central bright speckle removal, and image quality improvement of wide FOV. We design a neural meta-camera by introducing a knowledge-fused data-driven paradigm equipped with transformer-based network. Such a paradigm enables the network to sequentially assimilate the physical prior and experimental data of the metalens, and thus can effectively mitigate the aforementioned challenges. An ultra-wide FOV metacamera, integrating an off-axis monochromatic aberration-corrected metalens with a neural CMOS image sensor without any relay lenses, is employed to demonstrate the availability. High-quality reconstructed results of color images and real scene images at different distances validate that the proposed metacamera can achieve an ultra-wide FOV(>100 deg) and full-color images with the correction of chromatic aberration, distortion, and central bright speckle, and the contrast increase up to 13.5 ***, coupled with its compact size(lity, and full-color imaging capacity, the neural meta-camera emerges as a compelling alternative for applications, such as micro-navigation, microendoscopes, and various on-chip devices.

关键词： metalens meta-camera wide field of view neural network color imaging compact imaging device

Meta-objective with sub-micrometer resolution for microendoscopes

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Photonics Research 2021年第2期9卷 106-115页

作者： YAN liU QING-YUN YU ZE-MING CHEN HAO-YANG QIU RUI CHEN SHAO-JI JIANG XIN-TAO HE fu-li zhao JIAN-WEN DONG School of Physics&State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen UniversityGuangzhou 510275China

Microendoscopes are vital for disease detection and clinical diagnosis. The essential issue for microendoscopes is to achieve minimally invasive and high-resolution observations of soft tissue structures inside deep body ***, the microscope objective is a must with the capabilities of both high lateral resolution in a wide field of view(FOV) and miniaturization in size. Here, we propose a meta-objective, i.e., microscope objective based on cascaded metalenses. The two metalenses, with the optical diameters of 400 μm and 180 μm, respectively, are mounted on both sides of a 500-μm-thick silica film. Sub-micrometer lateral resolution reaches as high as 775 nm in such a naked meta-objective, with monochromatic aberration correction in a 125 μm full FOV and near diffraction limit imaging. Combined with a fiber bundle microscope system, the single cell contour of biological tissue(e.g., water lily leaf) can be clearly observed, compared to the indistinguishable features in other conventional lens-based fiber bundle systems, such as plano–convex and gradient refractive index(GRIN) cases.

关键词： fiber resolution bundle

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体育锻炼增进个体健康的经济学分析

天津体育学院学报 2004年第2期19卷 94-96页

作者：李芾赵立首都体育学院研究生部北京100088

从经济学的原理出发,运用文献资料法、逻辑分析法、成本—收益分析法,试图阐明健康的经济学特性,分析体育锻炼增进健康的成本、收益及其经济学特点。结论:体育锻炼增进健康具有生产与消费的同一性、非实物性、边际效用递减等经济学特点... 详细信息

从经济学的原理出发,运用文献资料法、逻辑分析法、成本—收益分析法,试图阐明健康的经济学特性,分析体育锻炼增进健康的成本、收益及其经济学特点。结论:体育锻炼增进健康具有生产与消费的同一性、非实物性、边际效用递减等经济学特点;体育锻炼的成本主要由物质成本、时间的机会成本、门票或会员票构成,体育锻炼的进入成本主要是时间的而非物质的;体育锻炼的收益具有长期性、难以量化性以及主体确定性。

关键词：体育锻炼健康经济学

Single-cell omics: experimental workflow, data analyses and applications

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Science China life Sciences 2025年第1期68卷 5-102页

作者： Fengying Sun Haoyan li Dongqing Sun Shaliu fu Lei Gu Xin Shao Qinqin Wang Xin Dong Bin Duan Feiyang Xing Jun Wu Minmin Xiao Fangqing zhao Jing-Dong J.Han Qi liu Xiaohui Fan Chen li Chenfei Wang Tieliu Shi Department of Clinical Laboratory the Affiliated Wuhu Hospital of East China Normal University (The Second People's Hospital of Wuhu City) Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang University Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration (Tongji University) Ministry of EducationOrthopaedic DepartmentTongji HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Frontier Science Center for Stem Cells School of Life Sciences and TechnologyTongji University Translational Medical Center for Stem Cell Therapy and Institute for Regenerative Medicine Shanghai East HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Research Institute of Intelligent Computing Zhejiang Lab Shanghai Research Institute for Intelligent Autonomous Systems Center for Single-cell Omics School of Public HealthShanghai Jiao Tong University School of Medicine National Key Laboratory of Chinese Medicine Modernization Innovation Center of Yangtze River DeltaZhejiang University Center for Bioinformatics and Computational Biology Shanghai Key Laboratory of Regulatory Biologythe Institute of Biomedical Sciences and School of Life SciencesEast China Normal University Beijing Institutes of life Science Chinese Academy of Sciences Peking-Tsinghua Center for life Sciences Academy for Advanced Interdisciplinary StudiesCenter for Quantitative Biology (CQB)Peking University Zhejiang Key Laboratory of Precision Diagnosis and Therapy for Major Gynecological Diseases Women's HospitalZhejiang University School of Medicine Key Laboratory of Advanced Theory and Application in Statistics and Data Science-MOE School of StatisticsEast China Normal University

Cells are the fundamental units of biological systems and exhibit unique development trajectories and molecular features. Our exploration of how the genomes orchestrate the formation and maintenance of each cell, and control the cellular phenotypes of various organismsis, is both captivating and intricate. Since the inception of the first single-cell RNA technology, technologies related to single-cell sequencing have experienced rapid advancements in recent years. These technologies have expanded horizontally to include single-cell genome, epigenome,proteome, and metabolome, while vertically, they have progressed to integrate multiple omics data and incorporate additional information such as spatial sc RNA-seq and CRISPR screening. Single-cell omics represent a groundbreaking advancement in the biomedical field,offering profound insights into the understanding of complex diseases, including cancers. Here, we comprehensively summarize recent advances in single-cell omics technologies, with a specific focus on the methodology section. This overview aims to guide researchers in selecting appropriate methods for single-cell sequencing and related data analysis.

关键词： single-cell sequencing genome epigenome proteomics metabolomics multimodal spatial transcriptomics CRISPR screening

货币政策机制转换与通货膨胀持续性——基于时变参数的泰勒规则

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上海经济研究 2017年第8期29卷 76-88页

作者：丁洪福赵丽洲辽宁石油化工大学经济管理学院 113001

通货膨胀持续性是中央银行制定货币政策的重要参数,理解驱动通货膨胀持续性变化的因素具有重要的研究意义。该文在新凯恩斯模型框架下,基于一个时变参数的泰勒规则,分析了货币政策机制转换对通货膨胀持续性的影响。实证结果表明,20世纪9... 详细信息

通货膨胀持续性是中央银行制定货币政策的重要参数,理解驱动通货膨胀持续性变化的因素具有重要的研究意义。该文在新凯恩斯模型框架下,基于一个时变参数的泰勒规则,分析了货币政策机制转换对通货膨胀持续性的影响。实证结果表明,20世纪90年代以来,中国通货膨胀持续性发生了显著的变化。通货膨胀缺口调整系数与通货膨胀持续性不存在负相关关系,中央银行增加通货膨胀目标权重不能够显著地降低通货膨胀持续性;GDP增长率缺口调整系数与通货膨胀持续性存在正相关关系,中央银行减小经济增长目标权重能够降低通货膨胀持续性。

关键词：货币政策机制通货膨胀持续性时变参数泰勒规则