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RF Optimizer Model for Predicting Compressive Strength of Recycled Concrete

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 215-223页

作者： LIU lin wang Liuyan wang hui SUN Huayue School of Civil Engineering and Architecture Shenyang UniversityShenyang 110000China

Traditional machine learning(ML)encounters the challenge of parameter adjustment when predicting the compressive strength of reclaimed *** address this issue,we introduce two optimized hybrid models:the Bayesian optimization model(B-RF)and the optimal model(Stacking model).These models are applied to a data set comprising 438 observations with five input variables,with the aim of predicting the compressive strength of reclaimed ***,we evaluate the performance of the optimized models in comparison to traditional machine learning models,such as support vector regression(SVR),decision tree(DT),and random forest(RF).The results reveal that the Stacking model exhibits superior predictive performance,with evaluation indices including R2=0.825,MAE=2.818 and MSE=14.265,surpassing the traditional ***,we also performed a characteristic importance analysis on the input variables,and we concluded that cement had the greatest influence on the compressive strength of reclaimed concrete,followed by ***,the Stacking model can be recommended as a compressive strength prediction tool to partially replace laboratory compressive strength testing,resulting in time and cost savings.

关键词： machine learning recycled concrete compressive strength

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng wang Guo-Cui Mao hui-lin Jiang Bao-Xia Dong Yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： CO 2 methanation Metal hydride Ni catalysts Carbonate Metal-carbonate interface

糠酸莫米松鼻喷剂浸泡明胶海绵在鼻内镜术后的应用

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汕头大学医学院学报 2016年第3期29卷 154-155,F0004页

作者：林彬王挥戈汕头大学医学院第一附属医院耳鼻咽喉科广东汕头515041

目的:观察糠酸莫米松鼻喷剂浸泡明胶海绵在鼻内镜鼻窦手术后的疗效和安全性。方法:鼻内镜鼻窦术后患者(60例)随机分为实验组(30例。鼻腔局部用糠酸莫米松鼻喷剂浸泡的明胶海绵,1周后重复1次)和对照组(30例。NS冲洗鼻腔,每天2次;糠酸莫... 详细信息

目的:观察糠酸莫米松鼻喷剂浸泡明胶海绵在鼻内镜鼻窦手术后的疗效和安全性。方法:鼻内镜鼻窦术后患者(60例)随机分为实验组(30例。鼻腔局部用糠酸莫米松鼻喷剂浸泡的明胶海绵,1周后重复1次)和对照组(30例。NS冲洗鼻腔,每天2次;糠酸莫米松鼻喷剂喷鼻,每天1次,每次2喷),并同时口服克林霉素2周。2周后复查鼻内镜,对鼻黏膜形态进行评分。结果:实验组鼻腔黏膜形态评分明显高于对照组(P<0.05)。结论:糠酸莫米松鼻喷剂浸泡明胶海绵在鼻内镜鼻窦手术后鼻腔局部应用疗效可靠,不良反应发生率低。

关键词：糠酸莫米松鼻喷剂鼻内镜鼻窦手术明胶海绵

Identification of a dual functional betulinic acid analog for the treatment of osteoarthritis by phenotypic screening

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Science China Life Sciences 2025年第1期 300-302页

作者： Ze-Min lin Mai Xiang Wen-hui Wei Shu-hui Fan Li Chen Jie wang Xiao-Qian Yang Chun-Hao Yang Shi-Jun He Jian-Ping Zuo Laboratory of Immunopharmacology State Key Laboratory of Drug ResearchShanghai Institute of Materia MedicaChinese Academy of Sciences School of Pharmacy University of Chinese Academy of Sciences School of Pharmacy Nanjing University of Chinese Medicine State Key Laboratory of Drug Research Department of Medicinal ChemistryShanghai Institute of Materia MedicaChinese Academy of Sciences Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine Experiment Center for Science and Technology Shanghai University of Traditional Chinese Medicine

Dear Editor, Phenotypic drug discovery, which observes compound effects on physiology,has given way to targeting specific molecules, but has revived by using modern methods to find drugs based on therapeutic outcomes in disease models(Vincent et al., 2022). Osteoarthritis(OA) is a prevalent chronic joint disorder, primarily affecting knee joints, with osteoclast activation due to low-grade inflammation resulting in increased bone resorption and structural changes in the joint(Katz et al.,2021).

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基于遥感的1984一2019年查干湖及周边湖泊透明度变化

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湖泊科学 2025年第1期37卷 328-338页

作者：赵方睿王强穆春生刘阁温志丹陶慧宋开山东北师范大学生命科学学院长春130024 中国科学院东北地理与农业生态研究所长春130102

湖泊透明度是衡量水质变化和湖泊水生生态系统健康的重要指标。湖泊透明度一般通过塞氏盘现场观测获得,其变化主要由水体中非藻类颗粒物、藻类和黄色物质(CDOM)浓度共同决定,因此可以通过光学遥感进行反演。本研究基于20042009年8次查... 详细信息

湖泊透明度是衡量水质变化和湖泊水生生态系统健康的重要指标。湖泊透明度一般通过塞氏盘现场观测获得,其变化主要由水体中非藻类颗粒物、藻类和黄色物质(CDOM)浓度共同决定,因此可以通过光学遥感进行反演。本研究基于20042009年8次查干湖实地采样获得的132条透明度数据,通过分析同步Landsat天顶反射率产品数据(TOA)不同波段组合与透明度之间的相关性,发现以红波段和蓝波段比值和红绿蓝波段均值AV(B3,B1)组合建立的透明度反演模型精度最高,误差最小,进而基于此模型反演了19842019年查干湖以及周边湖泊透明度。结果表明:查干湖透明度范围在1.0~63.0 cm之间,年均值为17.6 cm。查干湖透明度年均值变化分为两个阶段:19842001年间透明度波动范围较大,没有明显趋势;20022019年期间呈上升趋势(2.3 cm/10 a)。查干湖透明度与风速、降水量、湖泊面积和归一化植被指数具有一定的相关性。通过长时间尺度上遥感监测查干湖水体透明度的时空格局变化,分析其变化特征与规律,可为查干湖流域生态治理提供科学依据。

关键词：查干湖透明度 Landsat 遥感

Mechanistic study of ammonium-induced corrosion of AZ31 magnesium alloy in sulfate solution

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Journal of Materials Science & Technology 2020年第19期54卷 1-13页

作者： hui Pan Liwei wang Yi lin Feng ge Kang Zhao Xin wang Zhongyu Cui College of Electromechanical Engineering Qingdao UniversityQingdao 266071China School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China

The influence of NH4+ions on the corrosion behavior of AZ31 magnesium alloy was investigated by immersion test,hydrogen evolution,electrochemical methods and morphology *** results demonstrate the acceleration effect of NH4+on corrosion of AZ31 magnesium alloy due to the disruption of protective MgO film in NH4+-containing *** loose and cracked corrosion products of AZ31 magnesium alloy in NH4+-containing solutions are mainly composed of(Mg0.833Al0.167)(OH)2(CO3)0.083·0.75H2O and Mg5(CO3)4(OH)2·*** the NH4+concentration is lower than 0.01 M,knife-cut like corrosion occurs in some active area of the surface due to the partial dissolution of MgO *** the NH4+concentration is increased to 0.1 M,the MgO layer is completely disrupted,resulting in the occurrence of uniform *** cathodic and anodic reactions are accelerated by NH4+ions,while the effect of original pH values on the reaction kinetics can be neglected in NH4+-containing solutions.

关键词： Magnesium alloy Ammonium Corrosion kinetics Knife-cut like corrosion

Macroblock-level decoding and deblocking method and its pipeline implementation in H.264 decoder SOC design

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第1期8卷 36-41页

作者： wang Shu-hui lin Tao lin Zheng-hui Department of Electronic Engineering Shanghai Jiao Tong University Shanghai 200030 China

This paper presents a macroblock-level (MB-level) decoding and deblocking method for supporting the flexible macroblock ordering (FMO) and arbitrary slice ordering (ASO) bit streams in H.264 decoder and its SOC/ASIC implementation. By searching the slice containing the current macroblock in the bit stream and switching slices correctly, MBs can be decoded in the raster scan order, while the decoding process can immediately begin as long as the slice containing the current MB is available. This architectural modification enables the MB-level decoding and deblocking 3-stage pipeline, and saves about 20% of SDRAM bandwidth. Implementation results showed that the design achieves real-time decoding of 1080HD (1920×1088@30 fps) at a system clock of 166 MHz.

关键词： Flexible macroblock ordering (FMO) Arbitrary slice ordering (ASO) System-on-chip (SOC) Raster scan order Pipeline

Optimization of passive solar design and integration of building integrated photovoltaic/thermal(BIPV/T)system in northern housing

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Building Simulation 2021年第5期14卷 1467-1486页

作者： Li Ma Hua ge lin wang Liangzhu wang Department of Building Civil and Environmental EngineeringConcordia University1455 Boulevard de Maisonneuve 0MontrealQCH3G 1M8Canada

In the Canadian north,the cost of space heating is very high due to the harsh weather,its remoteness,lack of transportation,and dependency on the high cost of fossil fuel imported from the *** the North has an abundance of solar energy,significant energy savings with some added construction cost in houses could be achieved by applying high-performance building envelopes and solar design *** objective of this paper is to investigate the potential of both passive and active solar design strategies in improving the energy efficiency of northern ***,a reference house representing a typical single-family home in the North is modeled using EnergyPlus,and the key passive design parameters are optimized to minimize life-cycle ***,the air-based building integrated photovoltaic/thermal(BIPV/T)system is applied to the optimized house and integrated with HVAC *** is found that optimal passive solar design can reduce the heating energy demand by 42%with an incremental cost of 8%for Yellowknife and by 27%without incurring an incremental cost for *** BIPV/T with HVAC systems can reduce the defrost time of heat recovery ventilator(HRV),extend the working hours and improve the COP of air source heat pump(ASHP).The reduction in the total energy consumption is in the range of 1,4%-3.0%by integrating HRV and 0.3%-0.6%by integrating ASHP due to the mis-match of solar availability and heating energy *** maximize the utilization of solar energy available,the optimal use of thermal energy recovered from BIPV/T system in northern housing requires further investigation.

关键词： Canadian north energy modeling optimization passive solar design BIPV/T northern housing

Characteristic analysis of clinical coronary heart disease and coronary artery disease concerning young and middle-aged male patients

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World Journal of Clinical Cases 2021年第25期9卷 7358-7364页

作者： Kai-ge Peng hui-lin Yu Department of Cardiovascular Medicine Anqing Municipal HospitalAnqing 230032Anhui ProvinceChina

BACKGROUND Coronary heart disease(CHD)is a type of coronary atherosclerotic heart *** recent years,the incidence of CHD has been increasing annually,with an increasing number of young *** CHD may cause severe myocardial ischemia or myocardial necrosis,which in turn may cause myocardial infarction and related complications that seriously affect the life and health of the *** To examine the coronary arteries and clinical features of young and middle-aged male patients with *** From February 2019 to January 2020,110 male CHD patients admitted to our hospital were selected as research subjects and were divided into two groups by age:middle-aged group(n=55)and young group(n=55).The coronary arteries and clinical features of the patients were *** There were no significant differences in dyslipidemia,stroke history,high-density lipoprotein cholesterol,or triacylglycerol(P>0.05)between the two *** the young group,age,diabetes,hypertension,smoking history,body mass index,family history of CHD,drinking history,fibrinogen,low-density lipoprotein cholesterol,total cholesterol,and single-vessel disease were higher than those in the middle-aged ***,serum uric acid,hyperuricemia,myocardial infarction,gensini score>50,collateral circulation,multivessel disease,double vessel disease,involvement of the right coronary artery,and involvement of the left main coronary artery were lower in the young group than in the middle-aged *** middle-aged group mainly suffered from a high gensini score,implicating multiple arteries,whereas the young group was mainly affected by single-vessel *** between-group difference was significant(Pged male patients and single-vessel disease in young male patients.

关键词： Coronary heart disease Coronary artery disease Coronary artery features Myocardial ischemia Risk factors