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Optoelectronics Letters 2025年

作者： Rongxin zhang Zixiang ZHOU Lei WANG Xin zhang ying LIANG Guijie LIANG Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices， Hubei University of Arts and Science

A nanocrystal-molecule complex composed of CdSe donor and Rhodamine B (RhB) acceptor is prepared to investigate the effect of accepter-donor ratio on the Fo?rster resonance energy transfer (FRET) process. To highlight the FRET process， the energy level alignment between CdSe and RhB is purposefully designed and CdSe nanocrystal is coated with a wide band-gap ZnS shell. The carrier dynamics is observed via combined spectral analysis. The results reveal clear FRET process between the CdSe donor and RhB acceptor. The FRET is enhanced by increasing RhB/CdSe ratio and a gradual saturation will be present at high RhB concentration.

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Numerical Simulation of Radiation Transport to Improve Microalgae Cultivation in an Air-Lift Photobioreactor

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Journal of Thermal Science 2025年第1期34卷 62-76页

作者： zhang Xianbin LI Mingjia HUNG Tzuchen zhang Zixun Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education School of Energy and Power EngineeringXi'an Jiaotong University School of Mechanical Engineering Beijing Institute of Technology Department of Mechanical Engineering Taipei University of Technology

A comprehensive numerical model is developed to simulate the growth of microalgae under light/dark cycling *** purpose of this study is to predict the growth rate of Chlorella vulgaris cultivated in photobioreactors(PBRs) in order to improve the light conditions for microalgae and enhance the photosynthetic *** fluid dynamics(CFD) is used to simulate its internal hydrodynamic *** Lagrangian method is employed to track the movement of microalgae *** radiative transfer equation(RTE)is used to obtain light intensity *** combination of light radiation field and microalgae cell motions is used to construct the light history and they are integrated into the model of the photosynthetic units(PSU) to calculate the microalgae growth *** numerical results demonstrate that enhanced light/dark cycling frequency with ordered mixing can promote efficient microalgae *** effect of the vortex flow field generated by the baffles in an air-lift PBR is analyzed for increasing microalgae growth *** using the 1:1 baffle spacing,the biomass production of microalgae is increased by 41.8% compared to the original PBR.

关键词： light distribution particle tracking photobioreactor structure optimization

Construction of Fluorescent-magnetic-bifunctional Nanobiosensors by Layer-by-Layer Method

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Construction of Fluorescent-magnetic-bifunctional Nanobiosen...

Melting Evaluation of Phase Change Materials Impregnated into Cascaded Metal Foams with Regionalized Enhancement

第六届全国化学生物学学术会议

作者： Jun Hu,Min Xie,Cong-ying wen,Zhi-Ling zhang,Dai-wen Pang~* Key Laboratory of Analytical Chemistry for Biology and Medicine(Ministry of Education),College of Chemistry and Molecular Sciences,and State Key Laboratory of Virology,Wuhan University,Wuhan, 430072 P.R.China.

＜正＞In this work,we report a simple method for preparing fluorescent-magnetic-bifunctional nanobiosensors by taking advantage of the coordination between metallic element and *** particular,carboxyl-poly（styrene/acrylamide） copolymer nanospheres（HOOC-NS） were prepared by the method mentioned ***,the negative charged spheres were given a foundation layer of

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Journal of Thermal Science 2025年第1期34卷 223-241页

作者： WEI Xinyi zhang Nan zhang Zhaoli CAO Xiaoling YUAN Yanping School of Mechanical Engineering Southwest Jiaotong University

Metal foam promotes the heat transfer of phase change materials(PCMs) in the penalty of reducing the energy storage density of the composite *** this work,the effects of constant porosity(0.96,0.94,0.92,or 0.90) and pore density(PPI) of metal foam on heat transfer of composite PCMs are *** rate could be enhanced by employing with low porosity copper ***,aiming to the right bottom phase changing "dead region",a regionalized enhancement strategy of cascaded metal foams is *** dynamic melting performances of all the composite PCMs are comprehensively *** results reveal that the cascaded configuration is beneficial for *** show that the horizontal strategy enhances melting performance:a maximum of 17.98% reduction in total melting time could be reached when the rear part porosity is 90%.The energy storage density rate could be raised by 5.48%.Besides,the vertical strategy performs with a better average temperature uniformity of 0.441 and brings a lower temperature in the heated *** sum up,the regionalized enhancement of copper foam provides better performance in the phase change *** shows significant potential for solar heat storage and thermal protection.

关键词： copper metal foam heat transfer enhancement phase change materials regionalized enhancement

基于典型产业分析的北京非首都功能空间格局特征

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北京联合大学学报 2017年第1期31卷 41-45页

作者：文英姿张景秋北京联合大学应用文理学院北京100191

依据学者和北京市政府对北京非首都功能的界定和对应产业,结合北京城市疏解的近期要求,主要选取一般性产业中的农林牧渔和制造业以及从制造业中剥离出的冶金化工产业等典型产业为研究对象,根据2009年和2014年的POI数据,从空间维度运用Ar... 详细信息

依据学者和北京市政府对北京非首都功能的界定和对应产业,结合北京城市疏解的近期要求,主要选取一般性产业中的农林牧渔和制造业以及从制造业中剥离出的冶金化工产业等典型产业为研究对象,根据2009年和2014年的POI数据,从空间维度运用Arc GIS中核密度分析和Ripley’s K(r)函数研究产业转型下的北京非首都功能的空间分布和结构特征。研究数据分析显示,从2009—2014年,1)以农林牧渔以及制造业、冶金化工产业为代表的北京非首都功能空间分布呈现出从市中心向外转移的趋势;2)农林牧渔产业整体呈现围绕城近郊区向周边近邻扩散的趋势,并向东南、向北形成岛状集聚斑块;3)制造业总体呈现集聚弱化的态势,仅在东部形成小范围集聚的格局;4)冶金化工产业总体格局没有显著变化,仅在城区东北方向进一步集中。

关键词：非首都功能核密度分析 Ripley's K(r)函数空间格局功能疏解

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The optimal control theory——a scientific approach to fundamentally solving control problems

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Science China(Information Sciences) 2025年第1期68卷 389-391页

作者： Huanshui zhang School of Electrical and Automation Engineering Shandong University of Science and Technology School of Control Science and Engineering Shandong University

The maximum principle has bridged mathematical optimization to optimal control,ushering in significant developments and refinements in optimal control theory,notably during the 1960s with the advent of linear quadratic (LQ)control and linear quadratic estimation (LQE).This progression propelled optimal control theory into further advancements,encompassing stochastic control,robust/H-infinity control,model predictive control (MPC),networked control,and reinforcement learning *** control,established upon a rigorous mathematical foundation,extends static optimization theory to dynamic systems,exhibiting scientific essence,unity,and ***,since its inception,optimal control theory has served as an indispensable core role across all control-related domains,including communication-constrained control in networked systems,consensus control,cooperative control,and reinforcement learning control.

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DHEA诱导SD大鼠PCOS模型LHR、INSR、AR基因甲基化的研究

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生殖与避孕 2010年第1期30卷 9-14页

作者：朱亮邢福祺全松张文颖杜建新解放军第306医院生殖医学中心北京100101 南方医院妇产科生殖医学中心广州510515 解放军第306医院妇产科北京100101

目的:验证一种多囊卵巢综合征(PCOS)动物模型的建模效果,并针对模型研究黄体生成素受体(LHR)、胰岛素受体(INSR)和雄激素(AR)基因DNA甲基化状态。方法:选取23日龄SD雌性大鼠,模型组每日皮下注射脱氢表雄酮(DHEA)0.6mg/kg,对照组每日皮... 详细信息

目的:验证一种多囊卵巢综合征(PCOS)动物模型的建模效果,并针对模型研究黄体生成素受体(LHR)、胰岛素受体(INSR)和雄激素(AR)基因DNA甲基化状态。方法:选取23日龄SD雌性大鼠,模型组每日皮下注射脱氢表雄酮(DHEA)0.6mg/kg,对照组每日皮下注射等体积溶剂。注射20d后观察大鼠卵巢形态学(HE染色)、性激素(E2、T、P、FSH、LH)及空腹血糖和胰岛素的变化,并计算HOMA指数以评价胰岛素抵抗状况。建模成功后利用甲基化特异性PCR技术(MSP)检测模型组和对照组大鼠LHR、INSR和AR基因的DNA甲基化状态。结果:模型组大鼠的体质量显著低于对照组(P=0.000);去除体质量的影响后,模型组大鼠卵巢的质量略重于对照组,但无显著性差异(P=0.317)。模型组卵巢各级发育期卵泡及黄体少见,卵泡多呈囊性扩张,卵泡膜细胞、间质细胞增生;血清E2、T、FSH、FINS、FBG均显著高于对照组(均P<0.05);LH水平较对照组有所升高,但无显著性差异;LH/FSH比值组间无显著性差异,HOMA指数显著高于对照组(P=0.000)。LHR和AR基因经甲基化特异性模型组均未检出甲基化条带;INSR基因经MSP检测出甲基化条带,甲基化率为73.3%,显著高于对照组(16.7%)(P=0.000)。结论:利用DHEA成功诱导SD幼年雌性大鼠出现与PCOS患者相似的卵巢病理改变及雄激素升高和胰岛素抵抗等典型内分泌变化,是一种较为理想的PCOS动物模型。胰岛素抵抗、高胰岛素血症可能是肾上腺源性雄激素诱发PCOS的重要原因。DNA甲基化介导的胰岛素受体基因转录抑制是对PCOS胰岛素抵抗发生机制的一种全新补充。

关键词：多囊卵巢综合征(PCOS) DNA甲基化动物模型大鼠

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Method for Estimating the State of Health of Lithium-ion Batteries Based on Differential Thermal Voltammetry and Sparrow Search Algorithm-Elman Neural Network

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Energy Engineering 2025年第1期122卷 203-220页

作者： Yu zhang Daoyu zhang TiezhouWu School of Electrical and Electronic Engineering Hubei University of TechnologyWuhan430068China

Precisely estimating the state of health(SOH)of lithium-ion batteries is essential for battery management systems(BMS),as it plays a key role in ensuring the safe and reliable operation of battery ***,current SOH estimation methods often overlook the valuable temperature information that can effectively characterize battery aging during capacity ***,the Elman neural network,which is commonly employed for SOH estimation,exhibits several drawbacks,including slow training speed,a tendency to become trapped in local minima,and the initialization of weights and thresholds using pseudo-random numbers,leading to unstable model *** address these issues,this study addresses the challenge of precise and effective SOH detection by proposing a method for estimating the SOH of lithium-ion batteries based on differential thermal voltammetry(DTV)and an SSA-Elman neural ***,two health features(HFs)considering temperature factors and battery voltage are extracted fromthe differential thermal voltammetry curves and incremental capacity ***,the Sparrow Search Algorithm(SSA)is employed to optimize the initial weights and thresholds of the Elman neural network,forming the SSA-Elman neural network *** validate the performance,various neural networks,including the proposed SSA-Elman network,are tested using the Oxford battery aging *** experimental results demonstrate that the method developed in this study achieves superior accuracy and robustness,with a mean absolute error(MAE)of less than 0.9%and a rootmean square error(RMSE)below 1.4%.

关键词： Lithium-ion battery state of health differential thermal voltammetry Sparrow Search Algorithm

Automatic and Rapid Throughflow-Based Optimal Design Method for Multi-Stage Axial-Flow Compressors

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Journal of Thermal Science 2025年第1期34卷 77-91页

作者： LEI Fan zhang Xiawen JU Yaping zhang Chuhua Department of Fluid Machinery and Engineering School of Energy and Power EngineeringXi'an Jiaotong University Production and Environmental Department China Huaneng Group.Co.Ltd. State Key Laboratory for Strength and Vibration of Mechanical Structures Xi'an Jiaotong University

Throughflow design has the advantages of less time consumption and large optimization space,and thus is the corner stone of advanced design system of multi-stage axial-flow *** majority of relevant studies were limited to the throughflow inverse designs,and quite few works have been till now devoted to the throughflow optimal *** this work,an automatic and rapid throughflow-based optimal design method is proposed for axial-flow compressors in which a throughflow inverse design solver is embedded in optimal genetic algorithm to improve the design efficiency of axial-flow *** types of design parameters in the throughflow inverse design of axial-flow compressors,i.e.,swirl and shroud curve,are simultaneously used to optimize both the blade shape and flow *** proposed method is validated by the redesign optimization of the benchmark axial-flow compressor NASA Stage 35,and the CFD predictions show that the throughflow-based optimization leads to 1.18% efficiency benefit at design *** proposed method is then utilized to the two-dimensional throughflow optimal design of a large-scale 6.5-stage axial-flow industrial *** optimal design results are confirmed by CFD predictions,indicating that the proposed method can effectively improve the design adiabatic efficiency of the compressors by 1.09% within a few minutes on desk-top *** throughflow design implications are also obtained for advanced axial-flow industrial *** work could enhance the capability of throughflow design method and has engineering application value to explore the throughflow optimization space of multi-stage axial-flow compressors.

关键词： NASA

老年慢性心力衰竭患者康复运动对日常生活能力的影响

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心血管康复医学杂志 2017年第1期26卷 27-30页

作者：于瑞英张雯李莉北京垂杨柳医院老年病房北京市100022

目的:探讨老年慢性心力衰竭患者进行康复运动对日常生活能力的影响。方法:选择60例老年慢性心力衰竭患者,随机均分为常规治疗组(常规慢性心力衰竭治疗和护理),和康复运动组(常规治疗组基础上进行康复运动),分别于入院时和治疗6周后对两... 详细信息

目的:探讨老年慢性心力衰竭患者进行康复运动对日常生活能力的影响。方法:选择60例老年慢性心力衰竭患者,随机均分为常规治疗组(常规慢性心力衰竭治疗和护理),和康复运动组(常规治疗组基础上进行康复运动),分别于入院时和治疗6周后对两组患者脑钠肽(BNP)水平、左室射血分数(LVEF)、日常生活能力和6min步行距离进行评价。结果:治疗6周后,两组BNP水平均明显降低,LVEF均明显提高,康复运动组6min步行距离和日常生活评分明显增加(P<0.05或<0.01);且与常规治疗组比较,康复运动组BNP[(525.3±113.2)pg/ml比(252.2±114.5)pg/ml]水平降低更显著,LVEF[(43.46±9.12)%比(47.24±8.46)%]、6min步行距离[(286.6±46.2)mm比(582.5±55.3)mm]和日常生活评分[(65.12±17.6)分比(82±14.8)分]明显增加(P<0.05或<0.01)。结论:对老年慢性心力衰竭患者进行康复运动,能显著改善患者的心功能,提高患者的日常生活能力。

关键词：老年心力衰竭康复运动

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