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中国共病加权指数与老年人卫生服务利用的关联性研究

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中国全科医学 2025年第1期28卷 65-70页

作者：李丽萍廖婧高鑫源王力赖颖斯中山大学公共卫生学院广东省广州市510000 广东省肇庆市疾病预防控制中心传染病预防控制科 526000

背景慢性病共病给老年人卫生服务带来挑战,探索老年人慢性病共病负担对卫生服务利用的影响具有重要意义。中国共病加权指数(CMWI)是衡量我国中老年人群共病负担的指标,目前尚缺乏CMWI与卫生服务利用关联性的队列研究。目的探索老年人慢... 详细信息

背景慢性病共病给老年人卫生服务带来挑战,探索老年人慢性病共病负担对卫生服务利用的影响具有重要意义。中国共病加权指数(CMWI)是衡量我国中老年人群共病负担的指标,目前尚缺乏CMWI与卫生服务利用关联性的队列研究。目的探索老年人慢性病共病负担与卫生服务利用的关联,为改善老年人慢性病共病干预与管理提供科学依据。方法于2021年12月—2024年1月,以广东省肇庆市四会市为例,收集该市全民健康信息平台中2017—2021年的居民电子健康档案信息,建立老年人健康体检自然人群队列。以该时间段内首次体检时间为基线,使用CMWI衡量老年人基线的慢性病共病负担,采用负二项回归分析个体基线的CMWI分别与其在随访时间内利用的总门诊次数、慢性病相关门诊次数、总住院次数以及慢性病相关住院次数的关联性。结果39989例老年人中,14991例(55.18%)患有慢性病共病,CMWI值为1.3(0,2.3);在平均1268 d随访时间内,26141例(65.37%)利用过门诊服务,总门诊次数为2(0,6)次,慢性病相关门诊次数为1(0,4)次;7332例(18.34%)利用过住院服务,总住院次数为0(0,0)次,慢性病相关住院次数为0(0,0)次。不同年龄、性别、文化程度及CMWI的老年人卫生服务利用比较,差异有统计学意义(P0.05)。在调整年龄、性别、居住地、文化程度后,负二项回归分析结果显示,CMWI是老年人卫生服务利用次数增加的危险因素(IRR>1),CMWI每增加1个单位,总门诊次数增加1.210次(95%CI=1.196~1.224次),慢性病相关门诊次数增加1.276次(95%CI=1.259~1.292次),总住院次数增加1.277次(95%CI=1.244~1.312次),慢性病相关住院次数增加1.286次(95%CI=1.252~1.321次)。结论CMWI是老年人卫生服务利用次数增加的危险因素,老年人卫生服务利用次数随CMWI值增大而增加,应重视老年人的慢性病共病负担,为改进我国老年人慢性病共病干预与管理提供科学依据。

关键词：慢性病共病老年人卫生服务利用负二项回归中国共病加权指数

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng li Meifeng Cai Shengjun Miao Yuan li Yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin Luo Hang li Shan Guo Zhuang Tong Xiaotao Zhou Xu li Zhaohui Hou Shuquan liang Guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

不同施肥管理措施下土壤生物环境的灰色关联度分析

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湖北农业科学 2017年第7期56卷 1228-1231页

作者：胡诚乔艳刘友梅刘东海李双来陈云峰湖北省农业科学院植保土肥研究所武汉430064

为了研究长期不同施肥对土壤生物环境的影响,1993年在中国农业大学曲周试验站进行了施用15.0 t/hm^2和7.5 t/hm^2有机肥(包括EM堆肥和传统堆肥)、施用化肥和不施肥对照处理的田间试验。2004年6月取样分析,结果表明,随着有机肥用量的增加... 详细信息

为了研究长期不同施肥对土壤生物环境的影响,1993年在中国农业大学曲周试验站进行了施用15.0 t/hm^2和7.5 t/hm^2有机肥(包括EM堆肥和传统堆肥)、施用化肥和不施肥对照处理的田间试验。2004年6月取样分析,结果表明,随着有机肥用量的增加,土壤的基础呼吸、脲酶和碱性磷酸酶的活性及微生物生物量碳和线虫数量也随着增加;施用化肥可以提高土壤的基础呼吸、脲酶和碱性磷酸酶的活性及微生物生物量碳数量,减少线虫总数和食细菌线虫的数量。不同的施肥处理对土壤基础呼吸和微生物生物量碳含量的影响趋势由大到小为EM堆肥、传统堆肥、化肥、对照。应用灰色关联理论对土壤生物环境效应进行多目标综合评价得出,EM堆肥处理(15.0 t/hm^2)对土壤生物环境因素的影响最为有利。

关键词：土壤施肥基础呼吸土壤酶活性线虫灰色关联度分析

Underwater docking of an under-actuated autonomous underwater vehicle:system design and control implementation

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Frontiers of Information Technology & Electronic Engineering 2018年第8期19卷 1024-1041页

作者： Bo li Yuan-xin XU shuang-shuang FAN Wen XU College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310027China

Underwater docking greatly facilitates and extends operation of an autonomous underwater vehicle(AUV) without the support of a surface vessel. Robust and accurate control is critically important for docking an AUV into a small underwater funneltype dock station. In this paper, a docking system with an under-actuated AUV is presented, with special attention paid to control algorithm design and implementation. For an under-actuated AUV, the cross-track error can be controlled only via vehicle heading modulation, so both the cross-track error and heading error have to be constrained to achieve successful docking operations, while the control problem can be even more complicated in practical scenarios with the presence of unknown ocean currents. To cope with the above issues, a control scheme of a three-hierarchy structure of control loops is developed, which has been embedded with online current estimator/compensator and effective control parameter tuning. The current estimator can evaluate both horizontal and vertical current velocity components, based only on the measurement of AUV's velocity relative to the ground; in contrast, most existing methods use the measurements of both AUV's velocities respectively relative to the ground and the water column. In addition to numerical simulation, the proposed docking scheme is fully implemented in a prototype AUV using MOOS-IvP architecture. Simulation results show that the current estimator/compensator works well even in the presence of lateral current disturbance. Finally, a series of sea trials are conducted to validate the current estimator/compensator and the whole docking system. The sea trial results show that our control methods can drive the AUV into the dock station effectively and robustly.

关键词： Autonomous underwater vehicle (AUV) Docking systems Current estimator Current compensation Docking controlp

Convex optimization of asteroid landing trajectories driven by solar radiation pressure

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Chinese Journal of Aeronautics 2022年第12期35卷 200-211页

作者： Chuanjun DONG Hongwei YANG shuang li Bo li College of Astronautics Nanjing University of Aeronautics and AstronauticsNanjing 211106China Tianjin Key Laboratory of Microgravity and Hypogravity Environment Simulation Technology Tianjin 300458China Tianjin Institute of Aerospace Mechanical and Electrical Equipment Tianjin 300458China

High-area/mass ratio landers driven by Solar Radiation Pressure(SRP)have potential applications for future asteroid landing *** paper develops a new convex optimization-based method for planning trajectories driven by SRP.A Minimum Landing Error(MLE)control problem is formulated to enable planning SRP-controlled trajectories with different flight *** is transformed into Second Order Cone Programming(SOCP)successfully by a series of different convexification technologies.A trust region constraint and a modified MLE objective function are used to guarantee the convergence performance of the optimization ***,the SRP-driven trajectory optimal control problem is converted equivalently into a sequence of convex optimal control problems that can be solved effectively.A set of numerical simulation results has verified the effectiveness and feasibility of the proposed optimization method.

关键词： Asteroids Convex optimization Optimal control Soft landing Solar radiation pressure Trajectory optimization

Manufacture the conducting polymer with light

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Science China Chemistry 2025年第01期 8-9页

作者： Yang li Tianyu li Yan Ji Baoguang liu College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology) Nanjing University of Posts & Telecommunications

Poly(3,4-ethylenedioxythiophene) (PEDOT), heralded as the “king” of conducting polymers, is esteemed in bioelectronics for its mixed electronic and ionic conductivity, mechanical properties compatible with biological tissues, tunable healing ability and stability in diverse environments [1]. Based on additive manufacturing of three-dimensional structures,PEDOT realizes the implementation in the efficient production of flexible bioelectronics, the construction of intricate electrode-neural implantations, and the development of smart brain-computer-interfaces [2].

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Polyimide covalent organic frameworks as efficient solid-state li^(+) electrolytes

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Science China Chemistry 2024年第5期67卷 1647-1652页

作者： Xu liu Shi Wang Siqi liu Chengfang liu Xiangchun li Jian Wu Dazhi li Shihao Xu Chongyang liu Wen-Yong lai State Key Laboratory of Organic Electronics and Information Displays(SKLOEID) Institute of Advanced Materials(IAM)School of Chemistry and Life SciencesNanjing University of Posts&TelecommunicationsNanjing 210023China

Covalent organic frameworks(COFs) are attractive porous crystalline materials with extremely high stability, easy functionalization, and open channels, which are expected to be unique ion conductors/transporters in lithium ion batteries(liBs). Despite recent advances, low ion conductivity and low transference number, resulting in low charging/discharging rate, low energy density, and short battery life, are the main issues that limit their direct application as solid electrolytes in liBs. Here, we designed and synthesized a novel polyimide COF, namely, TAPA-PDI-COF, with abundant C=O groups, which has been successfully employed as high-performance solid electrolytes by doping TAPA-PDI-COF and succinonitrile(SN). Both the well-defined nanochannels of COFs and SN confined in the well-aligned channels restricted the free migration of anions, while C=O on COFs and CN groups of SN enhanced li^(+) transport, thus achieving a high ion conductivity of 0.102 m S cm^(-1)at 80 °C and a high lithium-ion transference number of 0.855 at room temperature. According to density functional theory(DFT)calculations, li-ion migration mainly adopted in-plane transport rather than the axial pathway, which may be due to the shorter hopping distances in the planar pathway. The results suggest an effective strategy for the design and development of all-solidstate ionic conductors for achieving high-performance liBs.

关键词： lithium ion batteries(liBs) covalent organic frameworks(COFs) solid-state ion conductors solid-state electrolytes ion conductivity

The effects of grain texture and phenotypic traits on the thin-layer drying rate in maize(Zea mays L.) inbred lines

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Journal of Integrative Agriculture 2016年第2期15卷 317-325页

作者： SUN Le-xiu liU shuang-xi WANG Jin-xing WU Cheng-lai li Yan ZHANG Chun-qing State Key Laboratory of Crop Biology/Agronomy College Shandong Agricultural University College of Mechanical & Electronic Engineering Shandong Agricultural University

To explore the relation of maize grain texture and phenotypic traits with grain thin-layer drying rate,we observed the ultra-structure of maize grain,and tested three traits about the maize grain texture and four phenotypic *** vitreous part percentage was different（P〈0.05） among different maize inbred *** was a significant relationship between the drying rate with grain texture and phenotypic *** factors that influenced the drying rate were different during different drying *** results observed that empirical constants（k and N） in drying equation were different for seed of the 30 inbred lines of *** k of simplified diffusion equation and N of page equation were significantly influenced by both grain texture and phenotypic *** results could be used as guideline parameters for drying maize seeds having different grain characteristics during different drying stages.

关键词： maize seeds texture and phenotypic traits drying rate drying parameters