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SmartMat 2024年第2期5卷 124-136页

作者： Yuting Wang Xu fang Siheng Li Ni An hongyu Pan Junqi Sun State Key Laboratory of Supramolecular Structure and Materials Jilin UniversityChangchunChina

Thermochromic smart windows have gained increasing popularity in light modulation and energy management in buildings.However,the fabrication of flexible thermochromic smart windows with high luminous transmittance(Tlum),tailorable critical temperature(τc),strong solar modulation ability(ΔTsol),and long-term durability remains a huge challenge.In this study,hydrogel-based thermochromic smart windows are fabricated by sandwiching thermochromic hydrogels of polyallylamine hydrochloride,polyacrylic acid,and carbonized polymer dots(CPDs)complexes between two pieces of transparent substrates.Benefiting from the incorporation of nanosized CPDs,the thermochromic hydrogel has an ultrahigh Tlum of~98.7%,a desirableτc of~24.2℃,aΔTsol of~89.3%and a rapid transition time of~3 s from opaque state to transparent state.Moreover,the thermochromic hydrogel exhibits excellent anti-freezing ability,tight adhesion toward various substrates,and excellent self-healing capability.The self-healing capability enables the fabrication of large-area smart windows by welding multiple hydrogel pieces.The smart windows retain their original thermochromic properties after being stored under ambient conditions for at least 147 days or undergoing 10,000 uninterrupted heating/cooling cycles.The model houses with smart windows can achieve a temperature reduction of 9.2℃,demonstrating the excellent indoor temperature modulation performance of the smart windows.

关键词： carbonized polymer dots polyelectrolyte complexes smart windows thermochromic hydrogels

Joint Optimization Scheme Based on Beam Selection and Interference Cancellation in Lens Millimeter Wave NOMA Systems

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China Communications 2022年第4期19卷 57-66页

作者： Lei Xu Jing Cai Jing Chang hongyu fang Xiaohui Li School of Electronics and Information Engineering Anhui UniversityHefei 230601China

Non-orthogonal multiple access(NOMA)has been integrated in millimeter-wave(mmWave)Massive MIMO systems to further enhance the spectrum efficiency, but NOMA has not been fully considered in lens mmWave systems. The fusion of these two technologies requires the joint design of beam selection and interference cancellation. In addition, when users follow the spatial cluster distribution, although the user clustering schemes based on K-means algorithm have been applied, the influence of the virtual and actual cluster center users on achievable sum rate has not been differentiated and analyzed in detail. To solve the above problems, a joint optimization scheme is proposed to maximize the achievable sum rate. The optimization problem is NP-hard, which is solved by using the divide-and-conquer approach. Concretely,based on the signal power loss analysis of directional deviation, a beam selection algorithm is designed for inter-cluster interference cancellation based on the Kmeans algorithm. Further for intra-cluster interference cancellation, a power allocation algorithm based on the bisection method is designed to guarantee the fairness of users in each cluster. The simulation results show that the proposed scheme offers a significant performance improvement in terms of both achievable sum rate and energy efficiency, and it is suitable for the large-scale user scenario due to its low complexity.

关键词： lens mmWave systems NOMA user clustering beam selection power allocation

加强法治建设，为建设教育强国、科技强国、人才强国筑牢基石

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现代教育管理 2024年第5期 1-12页

作者：周洪宇方皛华中师范大学江汉大学

教育、科技、人才是全面建设社会主义现代化国家的基础性、战略性支撑，统筹推进其一体化发展，基础在于加强法治建设。应立足中国实际，遵循法治规律，坚持顶层设计和法治实践相结合，聚焦党和国家的战略规划，针对实践中存在的问题、... 详细信息

教育、科技、人才是全面建设社会主义现代化国家的基础性、战略性支撑，统筹推进其一体化发展，基础在于加强法治建设。应立足中国实际，遵循法治规律，坚持顶层设计和法治实践相结合，聚焦党和国家的战略规划，针对实践中存在的问题、人民群众关切的重点问题，以及法律制度的空白点和冲突点，统筹推进教育、科技、人才三大领域的法治建设，具体措施为：统筹推进教育法治建设，优先加快教育立法；完善中国特色科技法律体系，以专项立法助力新兴技术的重点突破；夯实人才领域法治基石，营造以人为本、开放包容的人才发展环境。

关键词：教育强国科技强国人才强国教育法治建设科技法治建设人才发展环境

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带齿塑料土工格栅拉拔试验研究

工业建筑 2024年第5期54卷 205-211页

作者：方薇周鹏王骄沈洪宇长沙理工大学交通运输工程学院长沙410114 长沙理工检测咨询有限公司长沙410076

为提升普通塑料土工格栅与填料之间的界面强度,在格栅横肋上部固定角铝作为齿筋,构造一种新型立体筋材——带齿塑料格栅。通过开展不同组合工况下带齿塑料格栅室内拉拔试验,探索其在砂土填料中的抗拔特性及其参数特征。研究结果表明:1)... 详细信息

为提升普通塑料土工格栅与填料之间的界面强度,在格栅横肋上部固定角铝作为齿筋,构造一种新型立体筋材——带齿塑料格栅。通过开展不同组合工况下带齿塑料格栅室内拉拔试验,探索其在砂土填料中的抗拔特性及其参数特征。研究结果表明:1)法向应力较低时,拉拔曲线出现明显峰值,在考察范围内表现为应变软化特征;2)随着法向应力的增大,带齿塑料格栅极限拉拔力明显增大。同一法向应力下,极限拉拔阻力与齿筋高度近似呈线性正相关;3)带齿塑料格栅的加筋效果系数、界面抗剪强度参数、似摩擦系数、拉拔系数均随着齿筋高度的增大而增大,表明含有齿筋的三维立体筋材可以切实有效地提高加筋土复合体的抗拔强度,对改善土体稳定性具有积极意义。

关键词：道路工程加筋土拉拔试验带齿塑料格栅

气象因素和环境因素对慢阻肺急性发病重要性差异研究

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系统医学 2024年第8期9卷 29-31页

作者：黄伟谭宏宇方量柳州市工人医院急诊医学科广西柳州545005

目的探究气象因素和环境因素对慢性阻塞性肺疾病(Chronic Obstructive Pulmonary Disease,COPD)急性发病重要性的差异。方法选取柳州市工人医院于2021年1月—2023年12月收治的COPD急性发病患者的3460例临床资料以及同期柳州市气象资料... 详细信息

目的探究气象因素和环境因素对慢性阻塞性肺疾病(Chronic Obstructive Pulmonary Disease,COPD)急性发病重要性的差异。方法选取柳州市工人医院于2021年1月—2023年12月收治的COPD急性发病患者的3460例临床资料以及同期柳州市气象资料和空气质量日报资料为研究对象。对各要素与COPD急性发病就诊数进行Spearman相关分析和多元逐步回归分析,建立COPD预测模型并分析其拟合效果。结果COPD急性发病就诊数与平均气温及平均相对湿度呈负相关(r=-0.539、-0.589,P均<0.05),与SO_(2)及PM2.5呈正相关(r=0.613、0.632,P均<0.05);多元回归分析显示,日温差、相对湿度及PM2.5对COPD急性发病就诊数的影响显著(P均<0.05)。结论日温差、相对湿度及PM2.5对COPD急性发病的影响显著。

关键词：气象环境慢阻肺急性发病重要性差异

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益气化瘀补肺汤对中晚期非小细胞肺癌化疗患者免疫功能及远期生存的影响

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新中医 2024年第12期56卷 157-162页

作者：阮陈根潘宏宇顾银丰李芳绍兴市上虞人民医院

目的：观察益气化瘀补肺汤对中晚期非小细胞肺癌（NSCLC）化疗患者免疫功能及远期生存的影响。方法：选取136例中晚期NSCLC患者，按照随机数字表法分为观察组、对照组各68例。治疗期间，观察组剔除1例，对照组剔除4例，最终纳入研究观察... 详细信息

目的：观察益气化瘀补肺汤对中晚期非小细胞肺癌（NSCLC）化疗患者免疫功能及远期生存的影响。方法：选取136例中晚期NSCLC患者，按照随机数字表法分为观察组、对照组各68例。治疗期间，观察组剔除1例，对照组剔除4例，最终纳入研究观察组67例、对照组64例。对照组给予多西他赛联合顺铂方案化疗，观察组在对照组基础上给予益气化瘀补肺汤治疗。比较2组近期疗效，化疗前后肿瘤患者生活质量评分量表（QOL）评分、免疫功能指标水平，治疗期间不良反应发生率，以及中位生存时间。结果：化疗后，观察组总缓解率59.70%，高于对照组42.19%（P<0.05）。化疗后，2组社会功能、躯体功能、心理功能评分均较化疗前升高（P<0.05），观察组社会功能、躯体功能、心理功能评分均高于对照组（P<0.05）。化疗后，2组CD4+水平均较化疗前降低（P<0.05）,CD8+水平均较化疗前升高（P<0.05）；观察组CD3+、CD4+水平及CD4+/CD8+值均高于对照组（P<0.05）,CD8+水平低于对照组（P<0.05）。化疗期间，观察组不良反应总发生率4.48%，低于对照组17.19%（P<0.05）。观察组中位生存时间25个月，95%CI 15.223～34.777，对照组中位生存时间16个月，95%CI 17.684～24.316,2组比较，差异有统计学意义（Log Rank P<0.05）。结论：益气化瘀补肺汤可有效提高中晚期NSCLC化疗患者的近期疗效，有助于保护免疫功能，减少化疗期间严重不良反应发生，提高生活质量，延长患者的生存期。

关键词：非小细胞肺癌中晚期化疗益气化瘀补肺汤生活质量免疫功能生存期

A joint optimization scheme of resource allocation in downlink NOMA with statistical channel state information

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High Technology Letters 2022年第1期28卷 107-114页

作者：徐磊 LI Weifeng YAO Yijing CHANG Jing fang hongyu LI Xiaohui School of Electronics and Information Engineering Anhui UniversityHefei 230039P.R.China

In a real communication scenario,it is very difficult to obtain the real-time channel state infor-mation(CSI)accurately,so the non-orthogonal multiple access(NOMA)system with statistical CSI has been researched.Aiming at the problem that the maximization of system sum rate cannot be solved directly,a step-by-step resource allocation optimization scheme based on machine learning is proposed.First,in order to achieve a trade-off between the system sum rate and user fairness,the system throughput formula is derived.Then,according to the combinatorial characteristics of the system throughput maximization problem,the original optimization problem is divided into two sub-problems,that are power allocation and user grouping.Finally,genetic algorithm is introduced to solve the sub-problem of power allocation,and hungarian algorithm is introduced to solve the sub-problem of user grouping.By comparing the ergodic data rate of NOMA users with statistical CSI and perfect CSI,the effectiveness of the statistical CSI sorting is verified.Compared with the orthogonal multiple access(OMA)scheme,the NOMA scheme with the fixed user grouping scheme and the random user grouping scheme,the system throughput performance of the proposed scheme is signifi-cantly improved.

关键词： non-orthogonal multiple access(NOMA) channel state information(CSI) user grouping power allocation throughput

Structure,far-infrared spectroscopy,microwave dielectric properties,and improved low-temperature sintering characteristics of tri-rutile Mg_(0.5)Ti_(0.5)TaO_(4) ceramics

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Journal of Advanced Ceramics 2023年第2期12卷 296-308页

作者： hongyu YANG Liang CHAI Guangchao LIANG Mengjiang XING Zixuan fang Xing ZHANG Tianying QIN Enzhu LI Academy of Advanced Interdisciplinary Research Xidian UniversityXi’an 710071China National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 610054China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China Sichuan Province Key Laboratory of Information Materials and Devices Application Chengdu University of Information TechnologyChengdu 610225China

In this study,tri-rutile type Mg_(0.5)Ti_(0.5)TaO_(4) ceramics were synthesized,where the structure–property relationship,especially the structural configuration and intrinsic dielectric origin of Mg_(0.5)Ti_(0.5)TaO_(4) ceramics,and the low-firing characteristics were studied.It is found that the tri-rutile structural type is unambiguously identified through the Rietveld refinement analysis,the selected area electron diffraction(SAED),and the high-resolution transmission electron microscopy(HRTEM)along the[110]zone axis.With the increase in sintering temperature,the densification and uniformity of crystal growth play important roles in regulating the microwave dielectric properties of Mg_(0.5)Ti_(0.5)TaO_(4) ceramics.Intrinsically,theoretical dielectric properties calculated by the far-infrared reflective spectra approached the experimental values,indicating the importance of structural features to dielectric properties.Furthermore,a glass additive with high matching relevance with ceramics has been developed to decrease the high sintering temperature of Mg_(0.5)Ti_(0.5)TaO_(4) ceramics,where 2–4 wt%Li_(2)O–MgO–ZnO–B_(2)O_(3)–SiO_(2)(LMZBS)glass frit was adopted to reduce the suitable temperature from 1275 to 1050℃ without significantly deteriorating the microwave dielectric characteristics.Specifically,Mg_(0.5)Ti_(0.5)TaO_(4) ceramics containing 2 wt% glass addition sintered at 1050℃for 4 h possess excellent microwave dielectric properties:dielectric constant(ε_(r))=44.3,quality factor multiplied by resonant frequency(Q×f)=23,820 GHz(f=6.2 GHz),and the temperature coefficient of resonant frequency(τ_(f))=123.2 ppm/℃.

关键词： Mg0.5Ti0.5TaO4 ceramics crystal structure low-temperature sintering

集群分离分析法在大豆性状遗传定位中的研究进展

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植物遗传资源学报 2024年第1期25卷 1-12页

作者：师立松张艺龄刘方颜硕张孟茜赵璇李红雨牛宁李占军石家庄市农林科学研究院/河北省大豆产业技术研究院石家庄050041

大豆是重要的油料作物,同时也是人类食用植物蛋白及畜牧业饲料蛋白的主要来源,在国家粮食结构和粮食安全中占有重要地位。利用简单高效的遗传定位方法,对大豆主要农艺性状进行相关基因挖掘,开发紧密连锁分子标记,有利于加快大豆的分子... 详细信息

大豆是重要的油料作物,同时也是人类食用植物蛋白及畜牧业饲料蛋白的主要来源,在国家粮食结构和粮食安全中占有重要地位。利用简单高效的遗传定位方法,对大豆主要农艺性状进行相关基因挖掘,开发紧密连锁分子标记,有利于加快大豆的分子标记辅助选择及分子设计育种进程。集群分离分析法(BSA,bulked segregant analysis)是一种利用样本混池的建库方式对极端性状进行QTL定位的方法,因其具有“快速、准确、经济、实用”的特点,已成为当下应用较为广泛的基因定位方法。随着高通量测序技术的兴起,基于全基因组重测序的BSA方法更为广泛地应用在粮油作物、蔬菜花卉等物种中,并且成功定位出许多农艺性状相关的基因。本文简要介绍了BSA方法及流程步骤,总结了BSA在大豆农艺性状、抗逆性状以及雄性不育性状遗传定位中研究进展,并讨论了下一代测序(NGS,next-generation sequencing)背景下BSA的机遇与挑战,以及BSA在大豆分子标记辅助选择(MAS)育种中发展趋势,以期为高产优质大豆品种的选育提供重要的理论基础。

关键词：大豆 BSA 遗传定位

Contact lens as an emerging platform for ophthalmic drug delivery:A systematic review

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Asian Journal of Pharmaceutical Sciences 2023年第5期18卷 26-50页

作者： hongyu Yang Ming Zhao Dandan Xing Jian Zhang Ting fang Faxing Zhang Zhihao Nie Yaming Liu Lihua Yang Ji Li Dongkai Wang Department of Pharmaceutics School of PharmacyShenyang Pharmaceutical UniversityShenyang110016China

The number of people with eye diseases has increased with the use of electronics.However,the bioavailability of eye drops remains low owing to the presence of the ocular barrier and other reasons.Although many drug delivery systems have been developed to overcome these problems,they have certain limitations.In recent years,the development of contact lenses that can deliver drugs for long periods with high bioavailability and without affecting vision has increased the interest in using contact lenses for drug delivery.Hence,a review of the current state of research on drug delivery contact lenses has become crucial.This article reviews the key physical and chemical properties of drug-laden contact lenses,development and classification of contact lenses,and features of the commonly used materials.A review of the methods commonly used in current research to create contact lenses has also been presented.An overview on how drug-laden contact lenses can overcome the problems of high burst and short release duration has been discussed.Overall,the review focuses on drug delivery methods using smart contact lenses,and predicts the future direction of research on contact lenses.

关键词： Drug-loaded contact lenses Drug-loaded smart contact lenses Corneal diseases Ocular drug delivery Key attributes of contact lenses