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空调二次泵系统在地铁车站中的应用

制冷 2024年第1期43卷 22-26页

作者：杨礼桢中铁第四勘察设计院集团有限公司武汉430063

杭州地铁机场轨道快线工程杭州西站为地铁四线换乘车站,地铁车站体量大、空调系统末端多、运营要求高。针对本工程特点,经过比较分析水系统采用二次泵变流量系统,根据不同区域负荷特点和运营需求进行分区划分,可有效的降低空调水系统输... 详细信息

杭州地铁机场轨道快线工程杭州西站为地铁四线换乘车站,地铁车站体量大、空调系统末端多、运营要求高。针对本工程特点,经过比较分析水系统采用二次泵变流量系统,根据不同区域负荷特点和运营需求进行分区划分,可有效的降低空调水系统输送能耗,为运营后的稳定运行和场所管理创造了了良好条件。同时,文中给出了二次泵系统分区划分、设备选型及运行控制方案,并对选用条件进行了验证,可为类似工程提供参考。

关键词：地铁车站空调水系统二次泵

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浅从“女子不月”论治青春期女童月经迟潮

江西中医药大学学报 2024年第3期36卷 4-5,8页

作者：贺月星杨丽珍黑龙江中医药大学哈尔滨150040 黑龙江中医药大学附属第一医院哈尔滨150040

基于《黄帝内经》中“女子不月”的相关论述,浅析青春期女童月经迟潮的中医病因病机及治疗。青春期女童的月经迟潮,病因上多以肾虚为本,兼有脾虚而气血生化乏源,在标与肝郁气滞密切相关,因此治疗上以调补脾肾为主,兼以疏肝解郁,行气活... 详细信息

基于《黄帝内经》中“女子不月”的相关论述,浅析青春期女童月经迟潮的中医病因病机及治疗。青春期女童的月经迟潮,病因上多以肾虚为本,兼有脾虚而气血生化乏源,在标与肝郁气滞密切相关,因此治疗上以调补脾肾为主,兼以疏肝解郁,行气活血。并附验案1则以兹探讨。

关键词：女子不月青春期女童月经迟潮调补脾肾

苍附导痰汤加减对痰湿阻滞型单纯性肥胖儿童糖脂代谢的影响

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中国实验方剂学杂志 2024年第3期30卷 90-97页

作者：栾振芳汪凤茹罗斌王晓畅王婷婷杨丽珍黑龙江中医药大学哈尔滨150040 中国医科大学附属盛京医院大连医院大连116600 安顺市妇幼保健院贵州安顺561099 黑龙江中医药大学附属第一医院哈尔滨150040

目的:观察比较苍附导痰汤加减对痰湿阻滞型单纯性肥胖儿童糖脂代谢的干预效果。方法:将60例单纯性肥胖患儿按照随机数字表简单随机化法分为2组,奇数归入对照组,偶数归入基础观察组,每组30例。在全部签署知情同意告知书的基础上,观察组... 详细信息

目的:观察比较苍附导痰汤加减对痰湿阻滞型单纯性肥胖儿童糖脂代谢的干预效果。方法:将60例单纯性肥胖患儿按照随机数字表简单随机化法分为2组,奇数归入对照组,偶数归入基础观察组,每组30例。在全部签署知情同意告知书的基础上,观察组给予苍附导痰汤加减联合基础治疗,对照组仅给予基础治疗作为对照。经为期3个月的疗程治疗后,观察比较治疗前后不同组患儿的体质量指数(BMI)、糖脂代谢水平[血清总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、空腹血糖(FPG)、空腹胰岛素(FINS)、胰岛素抵抗指数(HOMA-IR)]、中医证候总积分及治疗有效率的改变情况。结果:与本组治疗前比较,观察组与对照组BMI均显著降低(P<0.01);治疗后与对照组比较,观察组BMI水平明显降低(P<0.05)。与本组治疗前比较,观察组与对照组TC、TG、LDL-C水平均显著降低(P<0.01);治疗后与对照组比较,观察组TC、TG、LDL-C水平明显降低(P<0.05),其中,观察组治疗后TC水平较对照组改善显著(P<0.01)。与本组治疗前比较,观察组与对照组FPG、FINS、HOMA-IR水平均明显降低(P<0.05);治疗后与对照组比较,观察组FPG、FINS、HOMA-IR水平明显降低(P<0.05),其中,观察组治疗后FPG水平较对照组改善显著(P<0.01)。与本组治疗前比较,两组患儿中医证候总积分均显著下降(P<0.01)。治疗后与对照组比较,观察组的中医证候总积分更低(P<0.01)。治疗后,观察组患儿治疗总有效率为86.67%(26/30),对照组患儿治疗总有效率为73.33%(22/30),经秩和检验比较,观察组总有效率优于对照组(Z=−2.100,P<0.05)。结论:苍附导痰汤加减联合基础治疗能够有效降低肥胖患儿的BMI指数,改善其糖脂代谢水平,临床疗效颇佳,具有较高的临床应用价值,值得进一步深入研究和推广。

关键词：苍附导痰汤加减单纯性肥胖儿童糖脂代谢痰湿阻滞

皮革中六价铬检测的标准曲线控制图的绘制及应用

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中国皮革 2024年第5期53卷 15-18页

作者：钱微君杨钱达周湘娟杨丽珍宁波市产品食品质量检验研究院(宁波市纤维检验所) 浙江宁波315048

本文建立皮革中六价铬检测的标准曲线斜率、截距,以及质控样品检测结果的质量控制图。收集了皮革中六价铬检测的25条标准曲线及质控样品中六价铬含量的25个检测结果,绘制出相关质量控制图,并应用于皮革中六价铬检测的质量控制。结果表明... 详细信息

本文建立皮革中六价铬检测的标准曲线斜率、截距,以及质控样品检测结果的质量控制图。收集了皮革中六价铬检测的25条标准曲线及质控样品中六价铬含量的25个检测结果,绘制出相关质量控制图,并应用于皮革中六价铬检测的质量控制。结果表明,分光光度法测定皮革中六价铬标准曲线的斜率控制在22551~23113范围内,截距控制在00184~00227范围内。利用该质量控制图可以快速对皮革中六价铬检测过程及标准曲线进行分析,判断检测过程是否处于受控状态,以确保检测结果可靠有效。

关键词：皮革六价铬标准曲线控制图

Q-homotopy analysis method for time-fractional Newell–Whitehead equation and time-fractional generalized Hirota–Satsuma coupled KdV system

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Communications in Theoretical Physics 2024年第3期76卷 70-83页

作者： Di Liu Qiongya Gu lizhen Wang Center for Nonlinear Studies School of MathematicsNorthwest UniversityXi'an710127China

In this paper,two types of fractional nonlinear equations in Caputo sense,time-fractional Newell–Whitehead equation(FNWE)and time-fractional generalized Hirota–Satsuma coupled KdV system(HS-cKdVS),are investigated by means of the q-homotopy analysis method(q-HAM).The approximate solutions of the proposed equations are constructed in the form of a convergent series and are compared with the corresponding exact solutions.Due to the presence of the auxiliary parameter h in this method,just a few terms of the series solution are required in order to obtain better approximation.For the sake of visualization,the numerical results obtained in this paper are graphically displayed with the help of Maple.

关键词： fractional Newell-Whitehead equation fractional generalized Hirota-Satsuma coupled KdV system approximate solution q-homotopy analysis method

Inducing piezoelectricity in distorted rutile TiO_(2)for enhanced tetracycline hydrochloride degradation through photopiezocatalysis

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Journal of Advanced Ceramics 2024年第3期13卷 323-331页

作者： Taotao Xia lizhen Lu Haoyu Zhang Jinghui Wang Zonghe Huang Hongyang Wang Weiyi yang Shuang Gao Qi Li Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Various material design strategies have been developed to enhance photocatalytic performance of TiO_(2).However,no report is available on applications of the photopiezocatalysis strategy on TiO_(2)due to its lack of piezoelectricity.Here we developed a low-temperature molten salt etching process to create rutile TiO_(2)nanoparticles by etching[MgO_(6)]octahedrons away from MgTiO_(3)by molten NH_(4)Cl,during which a lattice distortion occurred in TiO_(2).The lattice distortion broke the structure symmetry of rutile TiO_(2)and subsequently endowed these rutile TiO_(2)nanoparticles with an unusual piezoelectric response with the maximum effective piezoelectric coefficient(d_(33))of~41.6 pm/V,which had not previously been found in TiO_(2)photocatalysts.Thus,the photopiezocatalysis strategy was applied for the first time to enhance the photocatalytic performance of these TiO_(2)nanoparticles.The creation of lattice distortion to induce piezoelectricity could be extended to other photocatalysts that the photopiezocatalysis strategy has not been applied to and may generate novel functionalities for various technical applications.

关键词： photocatalysis TiO_(2) piezocatalysis molten salt etching process photopiezocatalysis

Generalized load graphical forecasting method based on modal decomposition

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Global Energy Interconnection 2024年第2期7卷 166-178页

作者： lizhen Wu Peixin Chang Wei Chen Tingting Pei College of Electrical and Information Engineering Lanzhou University of TechnologyLanzhou 730050P.R.China School of Electrical Data Engineering University of Technology SydneyNSW2007Australia

In a“low-carbon”context,the power load is affected by the coupling of multiple factors,which gradually evolves from the traditional“pure load”to the generalized load with the dual characteristics of“load+power supply.”Traditional time-series forecasting methods are no longer suitable owing to the complexity and uncertainty associated with generalized loads.From the perspective of image processing,this study proposes a graphical short-term prediction method for generalized loads based on modal decomposition.First,the datasets are normalized and feature-filtered by comparing the results of Xtreme gradient boosting,gradient boosted decision tree,and random forest algorithms.Subsequently,the generalized load data are decomposed into three sets of modalities by modal decomposition,and red,green,and blue(RGB)images are generated using them as the pixel values of the R,G,and B channels.The generated images are diversified,and an optimized DenseNet neural network was used for training and prediction.Finally,the base load,wind power,and photovoltaic power generation data are selected,and the characteristic curves of the generalized load scenarios under different permeabilities of wind power and photovoltaic power generation are obtained using the density-based spatial clustering of applications with noise algorithm.Based on the proposed graphical forecasting method,the feasibility of the generalized load graphical forecasting method is verified by comparing it with the traditional time-series forecasting method.

关键词： Load forecasting Generalized load Image processing DenseNet Modal decomposition

IoV environment exploring coordination:A federated learning approach

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Digital Communications and Networks 2024年第1期10卷 135-141页

作者： Tong Ding Lei Liu Yi Zhu lizhen Cui Zhongmin Yan School of Software Shandong UniversityJinan250101China

Exploring open fields with coordinated unmanned vehicles is popular in academia and industries.One of the most impressive applicable approaches is the Internet of Vehicles(lov).The IoV connects vehicles,road infrastructures and communication facilities to provide solutions for exploration tasks.However,the coordination of acquiring information from multi-vehicles may risk data privacy.To this end,sharing high-quality experiences instead of raw data has become an urgent demand.This paper employs a Deep Reinforcement Learning(DRL)method to enable IoVs to generate training data with prioritized experience and states,which can support the IoV to explore the environment more efficiently.Moreover,a Federated Learning(FL)experience sharing model is established to guarantee the vehicles'privacy.The numerical results show that the proposed method presents a better successful sharing rate and a more stable convergence within the comparison of fundamental methods.The experiments also suggest that the proposed method could support agents without full information to achieve the tasks.

关键词： Internet of vehicle Deep reinforcement learning Federated learning Data privacy

Application of Plasma Enhanced Chemical Vapor Deposition for Fingerprint Resistance

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稀有金属材料与工程 2012年第S1期41卷 433-438页

作者： Lei Wenwen Chen Qiang Qi Fengyang yang lizhen Liu Zhongwei Wang Zhengduo Beijing Inst Graph Commun Lab Plasma Phys & Mat Beijing 102600 Peoples R China

SiOx and diamond-like carbon(DLC)coatings as the fingerprint resistance and corrosion resistance layers were deposited by capacitively coupled plasma(CCP)-enhanced chemical vapor deposition powered by radio frequency(RF-PECVD).In here hexamethyldisiloxane(HMDSO)as monomer for SiOx coating,C2H2 as the carbon source for DLC growth precursor,and Ar as the dilution gas were utilized.The important factors affected fingerprint resistance was explored in detail.Besides,the corrosion resistant test on coatings and substrates were then examined by the potentiodynamic polarization measurement and salt-spray corrosion test,respectively.The chemical structure and composition of SiOx and DLC films were analyzed by FTIR,and the relationship between them and anti-corrosion property was discussed.The results show that the DLC coating demonstrates a better anti-fingerprint behavior than that of coated SiOx,especially in acidic solution environment.

关键词： SiOx and DLC coatings CCP fingerprint resistance corrosion resistance