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Polarized imaging dynamic light scattering for simultaneous measurement of nanoparticle size and morphology

Particuology 2024年第2期85卷 213-223页

作者： bingyao wang Tianyi Cai Xiaoshu Cai Wu Zhou Zeqi Liu Schoolof Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai200093China Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering Shanghai200093China Jiaxing MeaParTech Instrument Technology Co. LtdZhejiang314000China

The performance of nanoparticles is often affected by particle size and ***,electron microscopy or atomic force microscopy is typically utilized to determine the size and morphology of ***,there are issues such as difficult sample preparation,long processing times,and challenges in quantitative ***,it is of great significance to develop a fast,accu-rate,and statistical method to measure the size and morphology of *** this study,a new method,called polarized imaging dynamic light scattering(PIDLS),is *** nanoparticles are irradiated with a vertical linearly polarized laser beam,and a polarization camera collected the dynamic light scattering images of particles at four different polarization directions(0°,45°,90°,and 135°)at a scattering angle of 90°.The average particle size and distribution are obtained using the imaging dy-namic light scattering method at 0°polarization direction,and the morphology of the particles is ob-tained based on the depolarization patterns of the scattered *** optical sphericityΦis defined based on the degree of linear polarization(DoLP).It is also implemented for the quantitative evaluation of the sphericity of the nanoparticles,including spherical,octahedral,nanoplate,nanorod,and linear *** with the Poincarésphere parameterψ,the morphology of the nanoparticles can be roughly *** addition,PIDLS enables the measurement of particle size and morphology distributions simultaneously for evaluating the uniformity of *** effectiveness of PIDLS is verified by the measurement of five kinds of industrial titanium dioxide as well.

关键词： Imaging dynamic light scattering Polarized light scattering Non-spherical nanoparticles Morphology Online measurement

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聊天机器人在癌症病人自我管理中应用的研究进展

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护理研究 2024年第17期38卷 3128-3132页

作者：肖春叶付光蕾王冰瑶暨南大学护理学院广东510623 暨南大学附属第一医院

从概述、应用研究、优势、问题与挑战、展望与启示等方面阐述人工智能(AI)聊天机器人在癌症病人自我管理中的应用现状,为国内发展相关研究提供参考。

关键词：人工智能聊天机器人癌症自我管理综述

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数字健康技术对临床护士负性情绪和离职意愿干预效果的Meta分析

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护理学杂志 2024年第11期39卷 14-19页

作者：肖春叶付光蕾王冰瑶暨南大学护理学院广东广州510632 暨南大学附属第一医院感染科

目的评价数字健康技术对临床护士负性情绪和离职意愿的干预效果。方法检索PubMed、Web of Science、Cochrane Library、中国知网、万方数据、维普网等数据库中,数字健康技术对临床护士负性情绪干预的随机对照试验,检索时限为建库至2023... 详细信息

目的评价数字健康技术对临床护士负性情绪和离职意愿的干预效果。方法检索PubMed、Web of Science、Cochrane Library、中国知网、万方数据、维普网等数据库中,数字健康技术对临床护士负性情绪干预的随机对照试验,检索时限为建库至2023年10月,采用RevMan5.3软件进行Meta分析。结果共纳入17篇文献、2285名护士。Meta分析结果显示,与对照组比较,数字健康技术干预可显著减轻临床护士抑郁、焦虑情绪,改善睡眠质量,降低压力水平和离职意愿(均P<0.05);对创伤后应激障碍干预效果不明显。结论当前证据显示,数字健康技术干预对临床护士负性情绪和离职意愿有积极作用,但对其创伤后应激障碍的干预效果有待进一步验证。

关键词：护士焦虑抑郁压力睡眠障碍离职意愿数字健康技术 Meta分析

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基于偏振图像动态光散射的非球形纳米颗粒测量

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上海理工大学学报 2024年第4期46卷 382-391页

作者：王炳尧蔡小舒蔡天意周骛上海理工大学能源与动力工程学院上海200093

纳米材料的功能特性与其粒度和形貌有很大关系。图像动态光散射法是一种快速、准确、非接触的纳米颗粒测量方法。将图像动态光散射与偏振散射结合,提出了一种测量非球形纳米颗粒形貌的方法。根据偏振散射理论,当入射光为垂直线偏振光,... 详细信息

纳米材料的功能特性与其粒度和形貌有很大关系。图像动态光散射法是一种快速、准确、非接触的纳米颗粒测量方法。将图像动态光散射与偏振散射结合,提出了一种测量非球形纳米颗粒形貌的方法。根据偏振散射理论,当入射光为垂直线偏振光,颗粒的散射光在不同偏振方向的偏振散射特性与颗粒的形貌有关,可以用线偏振度参数描述。在90°散射角方向采用偏振相机,对球形和非球形纳米颗粒在0°,45°,90°,135°偏振方向上的动态光散射信号进行测量,结果表明:球形颗粒的线偏振度接近1,八面体颗粒的线偏振度略小于1,棒状颗粒的线偏振度小于1且随长径比增加而减小,纳米片及纳米线等非球形颗粒的线偏振度都有不同程度的减小。定义线偏振度为光学球体度,用以表征颗粒形貌,采用偏振图像动态光散射方法可以快速测量纳米颗粒的形貌分布。

关键词：动态光散射法纳米颗粒颗粒形貌偏振光散射分布

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Oomycetes and fungi:important parasites on marine algae

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Acta Oceanologica Sinica 2010年第5期29卷 74-81页

作者： LI Wei ZHANG Tianyu TANG Xuexi wang bingyao College of Marine Life Science Ocean University of China Qingdao 266003 China College of Plant Protection Shandong Agricultural University Taian 271018 China

Considering that the field is largely unexplored and its importance to aquaculture,outline of oomycetes and fungi parasiting on marine algae was provided in this paper,including 15 species of oomycetes,six species of chytrids,31 Ascomycota species and one species of mitosporic *** natrue,both the oomycetes and chytrids frequently occurred and induced prevalences of disease which could destroy the populations of host plants ***,the parasites in Ascomycota on algae have never occurred as epidemics so *** issues relating to the field were discussed such as performing tests to satisfy Koch＇s postulates,investigations of host specificity,interactions between host and parasite and the potential effects of environmental factors on occurrence of a disease,which are urgent in need of further investigations.

关键词： oomycetes fungi parasites marine algae

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Response of revegetation to climate change with meso- and micro-scale remote sensing in an arid desert of China

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Research in Cold and Arid Regions 2021年第1期13卷 43-52页

作者： Guang Song bingyao wang JingYao Sun YanLi wang XinRong Li Shapotou Desert Research and Experimental Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of ScienceLanzhouGansu 730000China Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China University of Chinese Academy of Sciences Beijing 100049China

The revegetation protection system(VPS)on the edge of the Tengger Desert can be referred to as a successful model of sand control technology in China and even the world,and there has been a substantial amount of research on revegetation ***,it is unclear how meso-and micro-scale revegetation activity has responded to climatic change over the past *** evaluate the relative influence of climatic variables on revegetation activities in a restored desert ecosystem,we analysed the trend of revegetation change from 2002 to 2015 using a satellite-derived normalized difference vegetation index(NDVI)*** time series of the NDVI data were decomposed into trend,seasonal,and random components using a segmented regression *** results of the segmented regression model indicate a changing trend in the NDVI in the VPS,changing from a decrease(−7×10−3/month)before 2005 to an increase(0.3×10−3/month)after *** found that precipitation was the most important climatic factor influencing the growing season NDVI(P<0.05),while vegetation growth sensitivity to water and heat varied significantly in different *** the case of precipitation reduction and warming in the study area,the NDVI of the VPS could still maintain an overall slow upward trend(0.04×10−3/month),indicating that the ecosystem is *** findings suggest that the VPS has been successful in maintaining stability and sustainability under current climate change conditions and that it is possible to introduce the VPS in similar areas as a template for resistance to sand and drought hazards.

关键词： vegetation activity climate change NDVI trend restored ecosystem meso-and micro-scale

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老年人皮肤干燥发生率及影响因素的Meta分析

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医学新知 2024年第1期34卷 43-52页

作者：肖春叶彭雨馨王冰瑶付光蕾暨南大学护理学院广州510632 暨南大学附属第一医院感染科广州510630

目的系统评价老年人皮肤干燥现状及其影响因素。方法计算机检索PubMed、Embase、Web of Science、中国知网、万方、维普、中国生物医学文献数据库,检索时限均为建库至2023年6月。由2名研究者独立进行文献筛选、信息提取与质量评价,采... 详细信息

目的系统评价老年人皮肤干燥现状及其影响因素。方法计算机检索PubMed、Embase、Web of Science、中国知网、万方、维普、中国生物医学文献数据库,检索时限均为建库至2023年6月。由2名研究者独立进行文献筛选、信息提取与质量评价,采用Stata 17.0软件进行老年人皮肤干燥发生率及影响因素的Meta分析。结果纳入19篇文献,均为横断面研究,包括69 260例老年人,其中发生皮肤干燥的人数为24 580人。老年人皮肤干燥总发生率为49%[95%CI(36%,61%)];亚组分析显示,男性、欧洲地区、来自养老机构的老年人皮肤干燥发生率较高,样本量<1000例的文献、发表年份为2012—2017年的文献中老年人皮肤干燥发生率也相对较高,老年人下肢部位皮肤干燥发生率最高,其次为上肢、躯干和头面部。年龄[OR=1.43,95%CI(1.05,1.94),P=0.021]、性别[OR=0.15,95%CI(0.04,0.25),P=0.005]、罹患糖尿病[OR=1.18,95%CI(1.13,1.23),P <0.001]、心血管疾病[OR=1.15,95%CI(1.11,1.20),P <0.001]、皮肤瘙痒[OR=9.65,95%CI(6.36,14.64),P <0.001],以及使用利尿剂[OR=1.22,95%CI(1.10,1.35),P <0.001]和抗生素[OR=1.08,95%CI(1.03,1.13),P <0.001]是老年人发生皮肤干燥的影响因素。结论老年人皮肤干燥发生率较高,年龄、性别、患有糖尿病、心血管疾病、皮肤瘙痒,以及使用利尿剂和抗生素是老年人皮肤干燥的影响因素,应重视相关人群皮肤干燥的评估和护理,本研究也存在一定局限性,未来应进一步开展高质量的研究来验证。

关键词：老年人皮肤干燥影响因素发生率 Meta分析

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Photostable lysosomal imaging of living cell with hyperspectral stimulated Raman scattering microscopy using a probe based on bisarylbutadiyne

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Chinese Chemical Letters 2019年第7期30卷 1393-1396页

作者： Cong Ding Yage Chen Haozheng Li bingyao wang Qi Wei Huajun Tang Shaokang Jia Zhiyong He Ping wang Xiang Zhou College of Chemistry and Molecular Sciences Key Laboratory of Biomedical Polymers of the Ministry of Education WuhanUniversity Wuhan 430072 China Britton Chance Center for Biomedical Photonics Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China MoE Key Laboratory for Biomedical Photonics Collaborative Innovation Center for Biomedical Engineering School of Engineering Sciences Huazhong University of Science and Technology Wuhan 430074 China

We designed a lysosome-selective Raman probe by conjugating bisphenylbutadiyne with morpholine, a well-known lysosome targeting moiety. This probe, named Lyso-BADY, has a Raman peak 28 times more intense than that of 5-ethynyl-2'-deoxyuridine. Lysosome in living cells was successfully visualized by hyperspectral stimulated Raman scattering (SRS) microscopy with this extracellular probe. Further study showed that the Raman signal of Lyso-BADY remained steady and strong even after a prolonged irradiation time. The photo-stability feature of Lyso-BADY rendered molecules of the similar structure as potentially versatile probe for continuous imaging in the future.

关键词： Raman probe SRS Cell imaging Photo-stability feature

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Variation of soil physical-chemical characteristics in salt-affected soil in the Qarhan Salt Lake,Qaidam Basin

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Journal of Arid Land 2022年第3期14卷 341-355页

作者： HUI Rong TAN Huijuan LI Xinrong wang bingyao Shapotou Desert Research and Experiment Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China

Soil salinization has adverse effects on the soil physical-chemical ***,little is known about the changes in soil salt ion concentrations and other soil physical-chemical characteristics within the Qarhan Salt Lake and at different soil depths in the surrounding ***,we selected five sampling sites(S1,S2,S3,S4,and S5)alongside the Qarhan Salt Lake and in the Xidatan segment of the Kunlun Mountains to investigate the relationship among soil salt ion concentrations,soil physical-chemical characteristics,and environmental variables in April *** results indicated that most sites had strongly saline and very strongly saline *** main salt ions present in the soil were Na^(+),K^(+),and Cl^(-).Soil nutrients and soil microbial biomass(SMB)were significantly affected by the salinity(P<0.05).Moreover,soil salt ions(Na^(+),K^(+),Ca2+,Mg^(2+),Cl^(-),CO_(3)^(2-),SO_(4)^(2-),and HCO_(3)^(-))were positively correlated with electrical conductivity(EC)and soil water content(SWC),but negatively related to altitude and soil *** soil salt ions,soil nutrients and SMB were positively correlated with altitude,but negatively related to EC and ***,soil nutrients and SMB were negatively correlated with soil salt *** conclusion,soil nutrients and SMB were mainly influenced by salinity,and were related to altitude,soil depth,and SWC in the areas from the Qarhan Salt Lake to the Xidatan *** results imply that the soil quality(mainly evaluated by soil physical-chemical characteristics)is mainly influenced by soil salt ions in the areas surrounding the Qarhan Salt *** results provide an accurate prediction of how the soil salt ions,soil nutrients,and SMB respond to the changes along a salt *** underlying mechanisms controlling the soil salt ion distribution,soil nutrients,and SMB in an extremely arid desert climate playa should be studied in greater detail in the future.

关键词： salinization soil salt ions soil physical-chemical characteristics soil microbial biomass soil nutrient Qarhan Salt Lake

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温针灸配合推拿手法治疗寒湿瘀阻证慢性腰痛的效果及对疼痛程度、运动功能的影响

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临床医学研究与实践 2024年第27期9卷 122-125页

作者：茹延龙黄晓云王冰瑶吴莉娜王博毅孙玲莉闫建梅陕西省中医医院陕西西安710003 子长市人民医院陕西延安717300

目的探讨温针灸配合推拿手法治疗寒湿瘀阻证慢性腰痛的效果及对疼痛程度、运动功能的影响。方法选取2020年1月至2023年1月收治的90例寒湿瘀阻证慢性腰痛患者,以随机数字表法将其分为对照组(45例,常规治疗)和观察组(45例,在常规治疗基础... 详细信息

目的探讨温针灸配合推拿手法治疗寒湿瘀阻证慢性腰痛的效果及对疼痛程度、运动功能的影响。方法选取2020年1月至2023年1月收治的90例寒湿瘀阻证慢性腰痛患者,以随机数字表法将其分为对照组(45例,常规治疗)和观察组(45例,在常规治疗基础上行温针灸配合推拿手法)。比较两组的治疗效果。结果观察组的治疗总有效率高于对照组(P<0.05)。治疗后,观察组的视觉模拟评分法(VAS)评分低于对照组,日本骨科协会腰痛评估量表(JOABPEQ)评分高于对照组(P<0.05)。治疗后,观察组的腰肌等长收缩最大前屈肌力、最大后伸肌力均大于对照组,Oswestry功能障碍指数(ODI)评分低于对照组(P<0.05)。治疗后,观察组的匹兹堡睡眠质量指数(PSQI)评分低于对照组,简明健康调查量表(SF-36)评分高于对照组(P<0.05)。结论温针灸配合推拿手法治疗寒湿瘀阻证慢性腰痛患者的效果明显,可减轻疼痛程度,改善运动功能,提高患者的睡眠质量和生活质量。

关键词：温针灸推拿手法慢性腰痛寒湿瘀阻证

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